标签： 武汉耍耍网

　　China Securities Network News (Wang Luo) started from the printing industry. Lingyun Guang has been deeply involved in the industrial machine vision industry for 20 years, and has expanded its applications to consumer electronics, new displays, new energy and other fields. Head enterprises in industries such as Apple, Huawei, Xiaomi, Foxconn, BOE and () are all important customers of Lingyun Guang.

　　On June 15th, Ling Yunguang (stock code: 688400) officially launched the inquiry offering, and will soon land in science and technology innovation board. The science and technology innovation board listing, Lingyun Guang plans to raise 1.5 billion yuan, and the fundraising direction is centered on the company’s vision planning. From industrial manufacturing to industrial intelligent manufacturing, machine vision is promising. The company will increase investment in technology research and development, continuously improve its platform-based capabilities, empower intelligent manufacturing, and help more industries achieve automation and intelligent development. The company’s development vision is to implant "eyes" and "brains" into machines and become a global leader in the fields of visual artificial intelligence and photoelectric information.

　　From agency to self-research, mastering the underlying core technology

　　According to the prospectus, Ling Yunguang was established in 2002, and started from the banknote printing industry, and carried out independent research and development through projects such as online detection of RMB gravure printing and large sheet detection; On the other hand, the agency business of foreign high-end visual devices is carried out. Since 2006, the company has successively entered the fields of printing and packaging, new display and consumer electronics, and further improved its independent research and development capabilities. At present, it has the research and development capabilities of advanced imaging, intelligent algorithms, intelligent software and automatic precision control, and independently developed core devices such as industrial cameras and light sources, which are applied to many industries.

　　The domestic machine vision started in the late 1990s. When Ling Yunguang entered this field 20 years ago, the domestic development and application were basically blank. The company started from scratch and gradually embarked on the road of independent research and development in the field of machine vision.

　　Ling Yunguang attached great importance to self-research of core technologies at the early stage of business development. During the period from 2002 to 2006, the company initially built a 100-person team with independent research and development capabilities of optical, mechanical, electrical, computing and software technologies, and started the research and development of independent software algorithms of VisionWARE. The technical accumulation in this period has created an insurmountable moat for the company’s competitors in a short period of time. Now the machine VisionWARE algorithm platform independently developed by the company has been iterated to version 5.0. Ling Yunguang is the first machine vision manufacturer in China to launch a purely independent bottom-level core algorithm library. The investment cycle of the bottom-level algorithm is quite long. It takes a lot of time and experience to optimize the core algorithm from the bottom, which makes it ahead of competitors in the same industry for about three to five years.

　　In addition, Ling Yunguang’s AI algorithm development based on deep learning, machine learning and knowledge map has also been at the forefront of the industry, forming an independent F.Brain intelligent algorithm platform, supporting factory-side and edge intelligence through edge computing, and supporting factory cloud intelligence through big data cloud computing technology. From the application point of view, the machine vision +AI technology is deeply combined to support industrial scenes.

　　It is understood that the algorithm library of the machine vision industry consists of open source vision algorithm libraries such as OpenCV, and third-party commercial payment algorithm libraries such as Vision Pro (cognex, USA), Halcon (German MVTec) and VisionWare (Ling Yunguang). Due to the long development cycle and large investment of algorithm library, companies in the industry usually develop their own application algorithms based on open source algorithm library, or independently develop and integrate with third parties, and few companies develop the underlying algorithms completely independently.

　　In addition to algorithms, Lingyun Guang has always been at the forefront of optical imaging technology, and has independently developed a series of visual core devices such as smart cameras and high-brightness special light sources. It has more than 70 patents in the optical field, and many solutions are the first to benchmark international and domestic machine vision friends, creating a brighter industrial "eye" competitiveness. At the same time, by investing in domestic CMOS sensor design company Changguang Chenxin and industrial lens professional company Hunan Changdao Optoelectronics, we will optimize the allocation of core resources and lay out the localization and autonomy of core technologies.

　　Form platform capability from system to equipment

　　After all, the banknote printing industry belongs to a special industry. After 2006, Ling Yunguang gradually expanded its business to printing and packaging, display screens, consumer electronics and other industries, and further integrated its research and development capabilities into platform-based capabilities of products and technologies, thus effectively supporting the company to achieve cross-industry development. In addition, the company began to expand its automation capability in 2016, and it took three years to gradually build automatic control technologies such as automatic assembly line and multi-axis precision manipulator.

　　Up to now, Lingyun Guang has four technical platforms, including advanced imaging, intelligent algorithm, intelligent software and intelligent automation, and comprehensive overall scheme design capability. It has 418 domestic patents and 208 software copyrights, which supports the company’s rapid expansion of downstream industries from printing to other fields, such as consumer electronics and new energy, and is also a technical base to support the company’s continuous leap-forward development in the future.

　　According to Ling Yunguang’s prospectus, up to now, the company has developed diversified intelligent visual equipment and innovative process solutions based on independent research and development of visual algorithms and AI algorithms for new display, consumer electronics, printing and packaging, new energy and other fields. Specific to the display field, the new display intelligent vision equipment products provided by Ling Yunguang can realize automatic and semi-automatic optical detection of small screen defects in TFT-LCD/OLED, covering the Cell process section and module process section, and support lighting detection when the screen is powered on and appearance detection when it is not powered on. The detection efficiency of the LCD lighting quality detector provided by it is more than 3 times that of manual work, which solves the problem of 2% low contrast stain defect detection, approaches the limit of human eyes, realizes high dynamic range detection, and has been popularized and applied in hundreds of sets in the industry.

　　Entering Apple’s industrial chain is a key milestone for Ling Yunguang, and it is also the inevitable result of technical capacity building. Five years ago, the company broke the situation that the high-end market of consumer electronic vision inspection was monopolized by foreign manufacturers such as cognex and Kearns for a long time, and became the Preferred Supplier in the field of machine vision certified by Apple, and began to provide configurable vision systems in batches.

　　"Hand", "Eye" and "Brain" cooperate to empower intelligent industrial production.

　　If configurable vision system products, such as machine vision algorithm platform developed by Ling Yunguang, can equip industrial machines with eyes and brains, then intelligent vision equipment is to implant muscles and limbs controlled by brains into the machines, thus realizing the precise control and execution of detection and production technology, and finally forming an intelligent production robot with the cooperation of hands, eyes and brains.

　　As the largest manufacturing country in the world, the penetration rate of domestic machine vision application is low, and there is still much room for growth, especially the aging population and the increase in labor costs, which also bring great demand to the machine vision industry.

　　From the demand of downstream customers, the epidemic situation in COVID-19 is complicated in recent years. Instead of reducing the budget for technology investment, downstream manufacturers have been further forced by the epidemic to strengthen their investment in industrial automation, digitalization and intelligence, and the cost reduction effect is very remarkable. In the future, the demand of downstream manufacturers for automation and intelligence is rigid and inevitable.

　　China market has become one of the fastest growing markets in the global machine vision market. According to the statistics of China Machine Vision Industry Alliance, the sales of machine vision industry in China increased from 10.18 billion yuan in 2018 to 14.42 billion yuan in 2020, with a compound growth rate of 19.02%. Thanks to the promotion of manufacturing automation and other factors, it is estimated that the sales of machine vision industry in China will increase at a compound growth rate of 27.15% from 2020 to 2023, and the sales will reach 29.6 billion yuan by 2023.

　　Under such opportunities, Lingyun Guang will continue to promote technological innovation in advanced optical imaging, software and algorithms, automation and other fields, and actively explore new application fields of industrial machine vision. At present, Ling Yunguang’s machine vision +AI products and services have achieved a high market share in consumer electronics, display panels, printing and packaging applications. According to the statistics of China Machine Vision Industry Alliance, in 2020, among the enterprises participating in the statistics (enterprises within the alliance), Lingyun Guang ranked first in the sales of machine vision industry in China.

　　According to the disclosure in the prospectus, the company is expanding its business to the field of new energy battery diaphragm detection, and has cooperated with customers such as Contemporary Amperex Technology Co., Limited. Focusing on the field of industrial manufacturing for 20 years, Lingyun Guang is expected to become the leader of industrial artificial intelligence, truly helping factories to improve quality, increase efficiency, reduce costs and reduce storage.

In today’s digital era, electronic invoices have become a common form of bills in economic activities. It is very important for individuals and enterprises to master the relevant knowledge of electronic invoices.

To master the relevant knowledge of electronic invoices, you can first obtain information through official channels. The official website of the tax department is an important source of information, which will contain detailed contents such as policy interpretation, issuance process, reimbursement regulations and so on. In addition, you can also pay attention to the official WeChat official account of the tax department and get the latest policy trends and operational guidelines in time. At the same time, corporate financial personnel can also participate in training courses organized by tax authorities to systematically learn the relevant knowledge of electronic invoices.

For individuals, when they come into contact with electronic invoices in their daily lives, they can consult the merchants about relevant issues, and know how to issue electronic invoices and how to obtain them. You can also search related knowledge articles and videos through the Internet to learn more about the use of electronic invoices and matters needing attention.

Electronic invoice has its unique format and characteristics. From the format, the common electronic invoice formats are PDF, OFD and so on. PDF format is a common one, it has good compatibility, and most devices and software can be opened for viewing. OFD format is a format of layout document independently developed by China, which has the advantages of high security and strong traceability.

The characteristics of electronic invoices are very remarkable. First, it is convenient to issue. Compared with traditional paper invoices, electronic invoices can be generated quickly through the system without filling in a lot of information manually, which greatly improves the billing efficiency. Second, it is convenient to store. Electronic invoices exist in the form of electronic data, which can be stored in computers, mobile phones and other devices without fear of loss or damage. Third, environmental protection and energy saving. Electronic invoice reduces the use of paper and conforms to the concept of green development. Fourth, the inspection is easy. Consumers and enterprises can quickly and accurately check the authenticity of electronic invoices through the official inspection platform of the tax department.

The following is a comparison table between electronic invoices and traditional paper invoices:

In a word, knowing how to acquire knowledge, format and characteristics of electronic invoices will help us to use electronic invoices more efficiently and conveniently in economic activities and adapt to the development trend of digital economy.

　　Russian video screenshot today

　　Overseas Network September 22ndAccording to the news of "Russia Today" on the 21st, some pictures and videos have been circulated on Russian social media platforms recently: a street in Barakovo is full of dead birds. This rare scene triggered a series of brain hole conjectures by netizens.

　　According to reports, this incident occurred in Barakovo, Saratov State, southwestern Russia, which is famous for its large nuclear power plant. According to videos and pictures uploaded by Russian social media users, local residents witnessed the bodies of dozens of dead birds scattered on a road.

　　Source: Russia today

　　Below the video, Russian netizens gave many conjectures about why dead birds fell from the sky. Some people blame it on natural phenomena, such as a strong wind or an accidental collision between two birds. Others think that fireworks and exhaust gas from factories may cause a large number of deaths, and some even say that it is related to 5G equipment, although this technology has not yet entered Russia.

　　"At the beginning of the nuclear disaster TV series Chernobyl, all the birds died." A comment with the highest praise linked the incident to the American HBO hit drama. The animal medical department of Saratov State is currently investigating this incident, which some people think may be related to bird flu. (Overseas Network Zhang Qi)

　　Photo: @ vision china Health Youyue Studio produced.

　　Fatty liver is becoming more and more common, and medical research suggests that it is closely related to diet. So, is there any way to "eat back" the "fat" liver that has been eaten?

　　"Yes!" Chen Zexiong, a famous Chinese medicine practitioner in Guangdong Province, pointed out that proper diet can really help the liver "slim down", which is also the treatment to eliminate the cause of fatty liver. However, people with "fat" liver should eat according to syndrome differentiation, and even cooking oil is particular. Experts also give three prescriptions: porridge, soup and tea to help patients with fatty liver to eat diet every day.

　　Medical Guidance/Provincial Famous Chinese Medicine Doctor, Chen Zexiong, Chief Physician of Chinese Medicine Department of the First Affiliated Hospital of Sun Yat-sen University, and Sun Baoguo, Deputy Chief Physician of Chinese Medicine Department of the First Affiliated Hospital of Sun Yat-sen University.

　　Text/Guangzhou Daily All-Media Reporter He Xuehua Correspondent Peng Fuxiang

　　Fatty liver is mostly physical examination, and it is found that 30% to 40% is due to obesity.

　　Two days ago, an old acquaintance and classmate came to Sun Baoguo’s clinic. She was blessed and anxious. It turned out that the old classmate was found to have fatty liver in the physical examination of the unit. "I heard that it might be cirrhosis and liver cancer, which scared me to worry about what to eat and drink!" The old classmate said.

　　There are quite a few such cases. Most patients with fatty liver only find problems during physical examination.

　　This is because most of mild fatty liver has no obvious symptoms, or only a sense of fatigue, which is easy to be ignored. However, if it develops into moderate to severe fatty liver, there will be loss of appetite, fatigue, nausea, vomiting, weight loss, right hypochondriac or right upper abdominal pain. Moreover, if the treatment of simple fatty liver is neglected, it can develop into steatohepatitis and cirrhosis for a long time.

　　Fatty liver, as its name implies, is the excessive accumulation of fat in the liver. Medicine believes that it can be caused by many causes and diseases, mainly related to obesity, diabetes, alcoholism and so on. According to relevant literature reports, simple obesity accounts for 30%~40% of the causes of fatty liver, and many patients with fatty liver have high-fat and high-cholesterol diets, which suggests that the formation of fatty liver is closely related to diet, and diet may be the direct cause of disease in the general population.　　

　　Dietotherapy can eliminate the cause of fatty liver

　　Finding and eliminating the cause is the fundamental method to treat fatty liver, such as adjusting diet structure, losing weight, abstaining from alcohol and treating the primary disease.

　　Professor Chen Zexiong pointed out that a reasonable diet is of great significance to the prevention and treatment of fatty liver, especially for patients with simple fatty liver, most of them can be recovered through reasonable diet and exercise. Therefore, if you have fatty liver, don’t be afraid and worried. It is better to actively try diet therapy and "eat back" the problems you have eaten.

　　Then how to treat fatty liver?

　　Traditional Chinese medicine believes that this disease is caused by improper drinking and eating, invasion of human body by dampness, emotional disorder, or chronic illness and physical weakness, which leads to poor qi movement, and the combination of dampness, phlegm and blood stasis, which is blocked in the blood vessels and meridians of the liver. Therefore, regulating qi-flowing, eliminating phlegm-dampness, promoting blood circulation and removing blood stasis, and clearing the liver and gallbladder are the main methods for treating this disease in traditional Chinese medicine. The choice of daily diet for patients with fatty liver should also follow this principle. While paying attention to the color, smell and taste of food, try to choose foods that meet the actual needs of individuals.

　　List of foods to help the liver "lose weight"

　　Foods with fatty liver preventing and treating effects and nutrition metabolism improving effects;

　　Patients with fatty liver who are uncomfortable with the right hypochondriac rib (that is, the right chest from the armpit to the sternum) and easy to get angry can eat more vegetables, chrysanthemum, tomatoes, shepherd’s purse, etc., which can clear away heat and cool the liver;

　　Patients with bad breath, constipation and fatty liver who overeat greasy food can eat more vegetables and fruits rich in vitamins and cellulose, such as radish, bamboo shoots, wax gourd, loofah, celery, cucumber, water chestnut and hawthorn fruit, which can clear away heat, promote bowel movement and facilitate urination;

　　Fatty liver patients with physical weakness can choose low-fat and high-protein foods such as pork lean meat, pigeon meat, rabbit meat, beef lean meat, skim milk, soybean milk, etc., which can tonify liver and kidney, replenish qi and nourish blood.

　　Food unsuitable for patients with fatty liver:

　　Pig fat, goose, duck eggs, animal oil, animal viscera and animal brain have high fat content; Crab, crab roe, squid, cuttlefish, clam meat and anchovies are high in cholesterol, so it is advisable to eat less or not. Because sugar will turn into fat in the body, which will aggravate fatty liver, it is better to eat less high-sugar foods such as litchi, longan pulp, candied fruit, preserved fruit and sugar.

　　Selection of staple food and oil:

　　It is suggested that fatty liver patients should choose vegetable oils such as vegetable oil, sesame oil, cottonseed oil and peanut oil, because they contain more unsaturated fatty acids and have the effect of lowering blood cholesterol. The staple food can be low-sugar foods such as corn flour, buckwheat flour, oat flour, bean flour and other products. These foods are coarse grains, which can reduce qi and broaden the intestines and cleanse the greasy stomach.

　　One porridge, one soup and one tea are most suitable for liver "fat"

　　Patients with fatty liver in daily life can also choose medicated diet for conditioning:

　　Hawthorn Carassius auratus soup: Take 30g of raw hawthorn, one crucian carp, 10g of immature bitter orange, appropriate amount of ginger and water, and drink the soup after cooking. Regular administration of this decoction can promote blood circulation and qi circulation, and has a certain effect on hypochondriac swelling pain or acupuncture-like pain, or hepatomegaly and purple tongue.

　　Pueraria flower tea: 15g of Pueraria flower, 10g of Salvia miltiorrhiza, 4-5 tablets of Ilex kudingcha, appropriate amount of water, boiling and simmering for 30min, and taking the juice as tea. Used for long-term alcoholism and mutual stagnation of dampness and blood stasis.

　　Codonopsis pilosula millet porridge: 10 grams of Codonopsis pilosula, 10 grams of Poria cocos, 20 grams of lentils, boiled for 30 minutes with appropriate amount of water, added with 100 grams of millet, and cooked with slow fire. For people with weak temper, such as listlessness, pale complexion and loss of appetite, this porridge can be taken frequently.

　　Special reminder that dietotherapy doesn’t work, hurry up with medication.

　　Experts pointed out that while adjusting the diet structure, patients with fatty liver should also take appropriate exercise to keep their mood comfortable, which is helpful for the treatment of fatty liver.

　　Special reminder, for those who have the primary disease or the above methods can not be effective, they must go to a regular hospital to find a specialist to deal with it, and cooperate with drug treatment to avoid delaying the illness.

◎ Science and Technology Daily reporter Zhang Jiaxing

"At the hospital, the doctor took him away from us soon. I never saw my son again. He died alone like that. We had no chance to say goodbye to him at all. Now there is only his wardrobe and tropical fish …"

The grief and separation described in the father’s intermittent gibberish in the novel Nemesis really and frequently occurred in North America, Europe and other places in the first half of last century.

The source of all tragedies is a virus called poliovirus. Thousands of infants and young children developed fever and inflammation for unknown reasons at first, and then suddenly they could not breathe spontaneously, were paralyzed and even died. In the classroom full of children’s voices in the past, several seats are vacant every day, some because of isolation, some because of illness, and no one knows which day "you at the same table" will disappear. Historical pictures show that in 1944, a sixth-grade classroom in Milwaukee, the largest city in Wisconsin, USA, was almost empty on the first day of school, and a teacher only taught one student. This scene is embarrassing.

On the other side of the city, the huge cylinder "iron lung" has "eaten" more and more children to help them breathe. Some people walk out of the "iron lung", some people fail to walk out alive, and some people spend the rest of their lives in the "iron lung", with their limbs and bodies in jars, only showing their heads to eat, drink and breathe …

Image source: vision china

According to records, on June 17th, 1916, new york officially announced the existence of epidemic polio infection. That year, the first polio epidemic broke out in new york, with more than 9,000 cases and 2,343 deaths. The polio epidemic in 1952 was by far the worst, with 57,628 cases reported in the United States alone.

Searching for "patient zero" thousands of years ago.

Who was the first "patient zero" infected with polio virus?

The most famous origin comes from the lithographs in ancient Egypt. A lithograph of the 18th dynasty in ancient Egypt (1403 -1365 BC) depicts a person with muscular atrophy in his right leg, which is regarded as the earliest verifiable document reflecting the pathological state of polio.

There are also manifestations of clinical manifestations of poliomyelitis in TCM books. The earliest record is found in Huangdi Neijing, such as Su Wen Wei Lun, which says, "The five internal organs are hot, which can make people sick and flaccid, and the cover is hot inside and flaccid outside."

Patients with polio sequelae in ancient Egyptian lithographs. Image source: shell

People know that the existence of poliovirus is only a short hundred years, but poliovirus has accompanied the evolution of human society like a ghost. The age is so long that the pursuit of polio virus zero infection is meaningless.

It can’t be traced back to the first "intruder" in the whole human society, but in some parts of human society, either because of the fear brought by the unknown, it is necessary to find an outlet to vent, or because of unspeakable political purposes, people will offend each other and even fight for who is the "patient zero" who brought it.

Gao Xi, a professor of history at Fudan University, pointed out in a speech that in the dark European Middle Ages, the scale, duration, coverage, number of deaths and variety of diseases that ravaged the European continent were unprecedented. Infectious diseases, including typhoid fever, smallpox, polio and scarlet fever, spread from one country to another and soon spread in Europe.

Countries go to war and blame each other for this. Among the people, rumors spread everywhere. Witches, Jews and children … Any group that is considered to be different may cause public anger at any time because of a rumor and be pushed into the painful abyss of publicly offending.

"At that time, a more common and excusable statement was that Columbus and his companions brought diseases from the New World to Europe and then spread them all over the world." Gao Wei said.

Ignorance leads to rumors and conviction. The haze of the virus enveloped the European continent at that time, and at the same time, human ignorance made the disaster spread like a virus.

Draw a circle and search for the cause of disease for a hundred years.

At first, people couldn’t relate the figurative and mechanized symptoms of sudden muscle paralysis and limb paralysis to a tiny microorganism, which is why polio has another name: polio.

At one time, polio was considered to be congenital and acquired. There was a secular view that children with polio had problems during embryo gestation, and even it was attributed to ghosts and gods. As a result, generations of polio patients had argued about their rights to get married and have children as adults for nearly half a century.

Back in the 20th century, before the Russian pathologist ivanovski discovered the virus, people knew nothing about this microorganism that could not be seen through the optical microscope. At that time, the disease was called: tooth paralysis, infantile spinal paralysis, primary paralysis of children, degenerative paralysis, anterior horn myelitis, early morning paralysis, etc., and it had no "half a cent" relationship with the virus.

In 1789, a British doctor named Michael Underwood made a clinical description of polio, which he called "weakness of lower limbs".

In 1840, Jacob von Heine, a German orthopedic surgeon, first separated the paralysis caused by polio from other forms of paralysis, calling it polio.

In 1887, Karl Oskar Medin, a Swedish scholar, went out to study individuals and regarded them as epidemics. He recorded an epidemic situation in Stockholm from an epidemiological point of view, and reported the epidemiological characteristics and nervous system complications of polio for the first time.

It was not until 1908, 10 years after the concept of Virus was accepted, that Austrian-born doctors Karl·Landsteiner and Erwin·Popper obtained samples from the central nervous system tissues of patients after death, and then isolated the virus by inoculating monkeys, finally associating paralysis and paralysis with the virus, and drew a closed-loop "circle" in finding the cause.

However, up to now, the closed-loop "circle" of polio caused by virus still can’t erase the prejudice brought by this terrible disease, especially the mutilation it brings is clearly visible, which will make people wonder whether it may be inherited in future generations or associated with "bad luck" regardless of scientific objectivity.

Together, NATO and Warsaw Pact are both healthy covenants.

In the summer of 1921, a cluster of small particles of poliovirus with a size of only 20 nanometers and a icosahedron swam in the water near Campobello Island on the Atlantic Ocean. Small particles drift with the tide, and their surrounding environment is as leisurely and quiet as the earth in ancient times.

A 38-year-old man dived into the water to enjoy the beauty of nature. A small wave came, and the small particles trapped by the sea water entered the man’s mouth and nose.

In just one day, the virus reached the man’s local lymphoid tissue, such as tonsils and other places to multiply and grow; Then the virus further invaded the blood stream, and on the third day, it reached various non-nerve tissues, such as heart, kidney, liver and pancreas, and propagated. The antibodies in the man’s body didn’t have time to stop this powerful offensive of the virus, and watched the virus break through the "blood-brain barrier" and go straight to the central nervous system.

After this trip, the man began to have incontinence, fever and facial paralysis. The paralyzed part began to spread from the hip, and gradually his legs were completely paralyzed, and then his waist … He was franklin roosevelt, who was later elected president of the United States. He was paralyzed for life from the waist down because of polio virus.

His infection and illness brought panic about this virus in the United States in the short term, but in the long run it sounded the "assembly number" for fighting polio virus.

With the emergence of vaccinia to contain smallpox, vaccines have become the "killer" for human beings to deal with viruses. Vaccine makers start with real viruses and try to eliminate their toxicity, so as to produce vaccines.

In 1953, the swimming pool in Elmira, New York, had a sign indicating that it was closed due to polio. Image source: shell

At the American Public Health Association conference in 1935, two groups of researchers reported their experiments on polio vaccine. In the first group of about 10 thousand children vaccinated, five died of polio and ten were paralyzed. There was no control group in this group of experiments, but John Ke Ermo, who led the experiment, said that the infection rate would be higher without vaccination. Such speculation without factual data made the scene in an uproar.

The second group is Maurice Brodie of new york University. One of the 7500 people vaccinated with the vaccine he developed was infected with polio; One of the 900 people vaccinated in the control group was infected with polio. Although the data is statistically significant, when the audience learned that the infection in the vaccinated population was caused by the vaccine, they all condemned Brody’s research for making healthy people suffer from polio.

Shortly after the report, Brody lost his position at new york University and was found to have committed suicide at home.

The research of vaccine is tortuous, but the scientific spirit and unremitting efforts will inevitably push forward the research and development of vaccine.

On April 12, 1955, the Journal of salk reported an exciting news with a full page: "’s vaccine works! 》（《SALK’S VACCINE WORKS！ 》）

In 1947, jonas salk, an American scholar, set up a three-person research team to jointly overcome the problem of polio. Unlike most researchers who studied live attenuated polio vaccine at that time, salk’s research used inactivated virus as vaccine.

In the United States in 1952, under the threat of epidemic disease, the scale of human trials of vaccine research and development continued to expand. Salk’s vaccine was tested on 1.8 million children, making it the largest medical experiment in human history at that time. Almost the day after the test results were announced, millions of children across the United States were vaccinated against polio.

The debate between "dead" vaccine and "live" vaccine has not stopped because of large-scale vaccination.

Albert Bruce Sabin, who is developing research and development in parallel with salk, insists that only when the live virus enters the human body can the vaccinated people get immunity.

However, Sabin’s "live" vaccine was born a little late. When he developed an attenuated polio vaccine, salk’s vaccine had become the mainstream of the United States, and the government no longer supported his project, so he had to cooperate with other countries.

Disease is not political, and science has no borders. The research and development of attenuated polio vaccine spanned the two political and military camps "North Atlantic Treaty Organization" and "Warsaw Treaty Organization". In 1959, with the support of the Soviet Union, Sabin completed a large-scale clinical trial involving 10 million people, which verified the effectiveness, safety and accessibility of the vaccine.

Ark, leading billions of people away from polio.

In 1950s, poliovirus also occurred from time to time in all parts of China. Even if the weather is sultry, families will let their children stay at home, because there is an invisible and frightening polio virus outside, which will make children disabled after a fever. What is even more frightening is that this virus can be invisible like a "ghost", and healthy people who seem to have no symptoms may also carry it.

At that time, which of the three polio viruses was prevalent in China had not been determined, and the etiology and serology research was almost zero. In 1957, Gu Fangzhou, a scientist from China, led a team to isolate poliovirus from patients’ feces in 12 cities across the east and west, and found that the three types of virus had different characteristics. Through a large number of clinical practice studies, the popular virus types in China were determined, and the laboratory diagnostic criteria of poliovirus were established.

A large number of cases obtained from the investigation made Gu Fangzhou more and more worried. He reported to his superiors that if the incidence of polio was not high, the prevention work could be carried out slowly, but now the incidence is high, and a big outbreak will eventually occur somewhere in a certain year. The outbreak in Berlin in 1947 was a warning, and the pandemics in Nantong in 1955 and Wenzhou in 1956 in China have also sounded the alarm.

In 1959, Gu Fangzhou was ordered to go to the Soviet Union to study the development method and production technology of polio virus vaccine. He found that the existing technology was good, but neither the cost nor the inoculation period was suitable for China at that time. In Gu Fangzhou’s mind, public health should not be "bookish" at all, and any work should be useful and beneficial to the people.

At the international conference on polio vaccine in 1959, Gu Fangzhou, who is good at learning, made it clear that vaccines can be divided into "dead" and "live", and that dead vaccines are safe, but they will not form an immune barrier in human body. Attenuated live vaccines may theoretically restore their virulence, but they can become natural vaccines and form an immune barrier.

With the courage and rational judgment of scientists, Gu Fangzhou made a choice for all the people of China. He wrote to the Ministry of Health at that time, suggesting to choose an attenuated live vaccine that was not proved to be safe and had no mature production process, and personally brought the virus back to China from the Soviet Union.

Gu Fangzhou Image Source: Voice of China

In December, 1959, the polio live vaccine research collaboration group was established with the approval of the former Ministry of Health, with Gu Fangzhou as the team leader. Vaccine research and development started from scratch, and the team overcame the difficulties of material shortage and harsh environment, and finally got a vaccine sample. With the start of clinical trials of vaccines, it becomes a problem who will take them first.

At the risk of possible paralysis, Gu Fangzhou drank a small bottle of vaccine solution, and the rest of the lab joined the experiment.

The vaccine is harmless to adults, but how safe is it for children? "At that time, my son Xiaodong was just under one year old and qualified." Gu Fangzhou’s oral memory history records: "My own children don’t eat, let others eat, which is not very righteous."

With the development of clinical trials of vaccines, the epidemiological data of 2 million children after taking vaccines show that the epidemic peaks in Shanghai, Tianjin and Qingdao have basically disappeared, and domestic vaccines are safe and effective biological products to prevent polio epidemic.

China polio eradication confirmation report signing ceremony. Image source: Voice of China

In Gu Fangzhou’s polio immunization strategy, every child in China cannot be left behind. The oral vaccine rate should reach 95% to form an immune barrier. This means that children who are far away from the Tibetan Plateau, the desert in Xinjiang and the deep mountains in Guizhou must enter the protective barrier without exception. If there is a slight omission, the virus may recur. At that time, there was no cold chain, so it was very difficult for vaccines to circulate effectively in the country in a short period of time. The local method of mixing popsicles with wide-mouthed thermos flask is not very effective.

According to Biography of Gu Fangzhou, Gu Fangzhou, who came home after work, was still thinking about the immunization strategy. His son looked at him. He picked up the candy on the table and shook it in front of his son. His son held out his little hand urgently to make him laugh. Sugar! Gu Fangzhou started the research on vaccine sugar pills. He developed the polio vaccine "Sugar Pill", which made China enter a polio-free era.

In 2000, the World Health Organization announced that polio had been eradicated in the western Pacific, which was closely related to the effective immune barrier formed by polio vaccine in China with a population of more than one billion.

Play around and be alert to the resurgence of sophisticated viruses.

Extinction, doomsday, end …

Since April 8, 1994, when the World Health Organization announced that polio was basically extinct, a large number of reports used similar words to summarize the fate of polio virus.

However, contrary to expectations, polio has never become one of the few infectious diseases that can be eliminated.

In 2000, Cape Verde reported 33 cases of acute polio, including 7 deaths.

In recent years, there have also been cases of infection in Pakistan, and the number of cases has dropped from 306 in 2014 to 54 in 2015, 20 in 2016 and 8 in 2017.

By 2018, less than 30 cases of naturally occurring polio had been reported in Afghanistan and Pakistan.

On March 10th, in Mazar-e-Sharif, the capital of Balkh province in northern Afghanistan, a health department worker vaccinated children against polio. Image source: Xinhuanet

However, according to Science, workers found the virus in a vast area of Pakistan. This disturbing latest discovery shows that it still exists in the environment and is far from disappearing.

Will this virus, which has been dealing with human beings for more than 3000 years, resurface?

As far as the virus itself is concerned, one of the secrets that it has lasted for thousands of years is that more than 90% of the carriers are "secret". These secret infected people have no symptoms, but they provide a secret habitat for the virus to preserve its vitality and wait for the opportunity to revive.

For human beings, rumors can still fuel its "resurgence." For example, rumors that vaccines cause autism are exploited by some religious organizations. Some commentators believe that the resurgence of polio in Nigeria in 2016 after two years of extinction has a lot to do with Boko Haram, an extremist organization in the country. The organization spread rumors among local people, saying that the real purpose of polio vaccine is to sterilize Africans, which led to a large-scale protest in Nigeria, and even several immunization workers were shot dead by extremist organizations.

In the face of ancient viruses, human beings should always remember:

For human tragedies and disputes,

The virus looked on coldly in secret.

For the change and migration of the environment,

The virus "secretly" sees the needle.

Source: Science and Technology Daily

Original title: "Apocalypse of the Great Plague in the World: Polio: After dealing with human beings for more than 3,000 years, what is the" resurgence "of this mysterious virus"

Read the original text

Special feature of 1905 film network On the evening of June 22nd, the 26th Shanghai International Film Festival officially came to an end, and Golden Goblet Awards awards were grandly announced. Host of movie channel, partner Lin Hai, presiding over the ceremony.

Kazakh film won the best film, Argentine film won the jury award, and director Bakur Bakuradze won the best director award. Omalova Milla won the best actress for the film Snow in the Courtyard.

China actors won the Best Actor Award for their films. The jury said, "In such an easily labeled role, an actor explained the unique charm of this role through his clumsy and bloated body and innocent eyes. In his eyes, we not only saw a valuable belief and strength, but also saw the warmest background of human nature."

As an actor, Huang Xiaoming laments that he is happy and can experience different lives in various roles. For example, Wu You in Sunshine Club is carefree in his world. "I have been in this industry for 26 years, and my life has experienced many ups and downs, stumbling, helplessness, disappointment, sadness and hesitation. I am also very scared. I found it when I crossed the mountain. I crossed this mountain and met my 18-year-old self. I have my initial heart, optimism and fear of moving forward. I am more determined in my initial heart and I must bravely go on the road of actors. "

Besides "Sunshine Club", the Chinese-language films shortlisted for this year’s main competition in Golden Goblet Awards have gained a lot.

The director’s new film won the best screenplay, and the actors were invited to the stage together with the screenwriters. Ge You reappeared "Ge humor", kissed the trophy and certificate, and said "beautiful" three times together with "big nephew" Karry to recommend "Hedgehog".

The director’s new film won the best photography, and the chief producer took the stage to accept the award on behalf of photographer Zhang Ying, teasing, "A woman replaces a man to accept the award." She especially thanked the judges for their affirmation, "Let the emotional interpretation of a man and a woman in China’s movies have more diverse ways. The film is also the first time that director Guan Hu and his team have all started the co-production of China and Hong Kong staff. "

2024 is the 20th anniversary of Shanghai International Film Festival "Asian Newcomer Unit". In 2023, he won the honor of Best Actor in Shanghai International Film Festival and made his debut in Jin Jue Festival, wishing the 20th anniversary of Yaxin endless.

He admits that he once dreamed of being a singer, talked about talk shows and worked as a media, and never thought that someone would introduce himself with a "filmmaker". In 2015, he walked onto the red carpet of the Shanghai Film Festival with a finalist in the Asian newcomer unit. Later, he was shortlisted and felt that he could probably be regarded as a filmmaker. "Sitting in this director’s chair, Yaxin gave me confidence. I shoot and play ordinary people who are particularly fond of dreaming. "

The 26th Shanghai International Film Festival Golden Goblet Awardslist of winners

Best film: Divorce (Kazakhstan)

Jury Award: Adult (Argentina)

Best Director: Bakur Bakuradze’s Snow in the Courtyard (Georgian, Russian)

Best actor: Huang Xiaoming’s Sunshine Club (China)

Best actress: Omarova Milla’s Divorce (Kazakhstan)

Best Screenplay: The Hedgehog by Guo Fangfang and Gu Changwei (China)

Best Photography: A Man and a Woman by Zhang Ying (China Mainland, Hongkong, China)

Art Contribution Award: (Iran)

Best Documentary: (China)

Best animated film: (Japan)

Best animated short film: (China)

Best live-action short film: (Israel)

Water workers in protective clothing enter the community service city water group for the picture.

　　Every day, in the "Urban Operation Support Work" WeChat group composed of the key office of Wuhan Municipal Government and urban water, electricity, gas, fuel, communication, transportation, traffic control and other units, all kinds of coordination work are meticulous. "Guarantee the lifeline of the city without any mistakes!" Focus on overall planning, water affairs, traffic control and other departments closely cooperate, sewage treatment chemicals, oil products, disinfectant … … All kinds of transport vehicles are constantly gathering in Wuhan.

　　Since the temporary closure of Wuhan’s passage from Han on January 23 and the suspension of traffic operations, as of February 9, more than 9 million citizens in Han have spent 18 days smoothly. As the lifeline and ballast stone of the city, water, electricity, gas, oil and communication are well supplied and stable and orderly. Behind this is the joint efforts of more than 20,000 security personnel every day.

　　On February 8th, the Urban Operation Group of COVID-19 City’s Prevention and Control Headquarters introduced that in order to ensure that the relevant key parts and the people of the city have no worries during the epidemic prevention and control period, there are 24,000 people working in the urban operation sections such as water supply, power supply, gas use, oil use and communication every day, among whom 14,000 people are on the front line. They overcame many difficulties and tried their best to ensure the normal operation of the city even when their own protective materials were in short supply.

　　Arrears are not stopped, and the water supply hotline serves 24 hours.

　　According to the Municipal Water Affairs Bureau, as of February 5, the overall water supply situation in the city is stable and orderly. The average daily water supply in the city is about 4 million tons, and the water supply capacity in the city is 6.3 million tons/day, which can guarantee the daily water supply and the water quality meets the national health standards. In order to prevent the inconvenience of water use caused by arrears, water supply enterprises have also introduced measures to facilitate the non-stop water supply during the epidemic.

　　The relevant person in charge of the Municipal Water Affairs Bureau said, "We give full play to the advantages of smart water affairs and use scientific and technological means to coordinate the dispatching of water pressure and water quantity." With the help of big data, cloud computing and other means, the water pressure in the city is sufficient and the pipe network is safe to operate.

　　Regarding the water quality problems during the epidemic prevention and control period that citizens are concerned about, the city has continuously monitored the water quality changes by encrypting the frequency of water quality testing for factory water, pipe network water and peripheral water to ensure water quality safety.

　　On February 2nd, there was no water in Mr Tian’s home in Qili New Village, Hanyang. Mr. Tian is a highly suspected COVID-19 patient and is isolated at home. Liuyong, deputy director of Hanyang Pipeline Institute of the Municipal Water Group, reminded everyone to wear protective clothing: "The water supply guarantee is not divided into objects, and the danger is also on." After on-site maintenance, the water problem in Mr. Tian’s home was solved.

　　Since January 23, in order to reduce the probability of residents entering and leaving crowded places, the city has suspended the door-to-door copying business and temporarily closed the business hall. At the same time, keep the online channels open and the water supply hotline service 24 hours a day.

　　There is no power outage due to arrears, and workers patrol dozens of kilometers of cable lines every day.

　　From January 24th to February 6th, State Grid Wuhan Power Supply Company dispatched a total of 28,658 personnel and 4,278 vehicles for epidemic prevention and power supply protection. At present, the city’s power supply is all normal.

　　During the epidemic prevention period, Wuhan Power Supply Company took measures to ensure the electricity consumption of people’s livelihood by paying arrears to residents. As of 24: 00 on January 28th, about 490,000 households in Wuhan were in arrears without power failure.

　　After the city’s access roads were closed, Yu Nianchun, a group of young employees of Wuhan Power Supply Company’s cable inspection team, led by Sun Changqun, the squad leader, drove the "yellow pickup truck" more frequently to escort the main cable line of Wuhan Power Grid.

　　Yu Nianchun said: "The situation is special now. There are few people staying in Wuhan. The unit is in short supply. If I can go, I will come." As promised, from the first day, he visited dozens of kilometers of cable lines every day, measured the temperature and circulation of more than a dozen cable terminals and intermediate joints, and evaluated the state through the data and made records.

　　Zhao Bin, an ordinary electric power repairman in Wuhan, said, "In this special period, we must stick to our posts and deal with the emergency repair tasks that appear at any time. One night, I received a rush repair task, and the user lost power due to the failure of high-voltage cable. We started at 8 o’clock in the evening and didn’t return to the company until 1 o’clock in the morning. "

　　There is no gap in the air source, so the medical staff can take a hot bath with ventilation on the same day.

　　Since January 23, all employees of Wuhan gas industry have entered a "wartime state", and more than 2,000 employees of 88 gas companies have adhered to the front line to ensure that citizens use gas for their lives, medical institutions supply gas, and hospital construction projects are ventilated on time.

　　The Municipal Urban Management Law Enforcement Committee and the Municipal Gas Management Office introduced that during this period, the urban management department focused on supervising gas enterprises to implement the safe and stable gas supply of medical institutions.

　　From the beginning of the Lunar New Year, Zheng Hui, a line inspector of the Municipal Natural Gas Company, has been living in Changqing Management Station of Hankou Pipeline Institute. He patrols more than 60 kilometers every day, increasing the number and intensity of inspections on the pipe network around Jinyintan Hospital to ensure the safe operation of the pipe network and the safe use of gas by more than 180,000 households in the jurisdiction.

　　On February 1st, Ziyang Lake Hotel, near Hubei Provincial People’s Hospital, was designated as the accommodation for medical staff in the hospital, and it was necessary to connect natural gas as soon as possible. WISCO Jiangnan China Gas Company acted quickly. After 8 hours of intense operation, natural gas was turned on, 3 hours earlier than expected, and the medical staff who stayed that night took a hot bath.

　　According to statistics, from January 24 to February 7, the city supplied an average of more than 8 million cubic meters of natural gas every day; Accumulated supply of liquefied petroleum gas is about 250 tons; Vehicle natural gas is sold for about 300,000 cubic meters, with stable inventory and no shortage of gas source for the time being.

　　Engineers crossed the quarantine area and installed video phones for the hospital.

　　From February 6th to 7th, the maintenance engineers of Wuhan Branch of China Telecom fought all night in the front line of epidemic prevention communication support, and installed video phones for 16 designated hospitals.

　　At two o’clock in the morning on the 6 th, the company was ordered to start the video phone installation work urgently. The company originally had more than 30 employees, but some of them went back to their hometown in advance on holiday, and some of them were isolated because of contact with suspected patients, and only 16 people could be called. Everyone knows the danger of more than a dozen circuits passing through the hospital isolation zone, but no one flinched. After nearly 30 hours of intense construction, almost everyone did not have a decent meal, but no one complained.

　　Wuhan Municipal Communications Administration, together with the municipal economic and information department, will co-ordinate and organize the city’s communications enterprises to fight hard and overcome difficulties. There are countless such examples.

　　At noon on February 1st, Huangpi Branch of Wuhan Telecom received a call from a user. A user in Outang Village of Changling was trapped in the bay because of the epidemic. Three children at home had to take online classes, and there was no network at home. I hope that Telecom can install the network at home.

　　Due to the severe epidemic situation, rural roads were blocked, so Gao Hongli, a salesperson of Changling Branch of huangpi district Branch, and Huang Jinsong, a maintenance worker, rode motorcycles to the users’ homes against the cold wind and immediately wired them. It took only four hours from receiving orders to accepting and installing machines.

　　According to the requirements of epidemic prevention headquarters, Wuhan Telecom opened video conferencing service for 50 key hospitals and isolated wards in the city. Open fixed line and broadband for a number of medical isolation points. Wuhan Mobile has completed the network testing and optimization of 49 isolation points, and Wuhan Unicom has implemented a number of site resource expansion.

　　The fuel supply in the whole city is guaranteed if the oil is continuously supplied and the station does not close.

　　During the anti-epidemic period, Sinopec Caidian Zhiyin Station and Jiangxia Wunan Gas Station provided 120 ambulances for all patients in the city with free refueling and free meals.

　　More than 100 negative-pressure ambulances donated by the whole country to Wuhan arrived in Han late at night on February 5, and Sinopec Hanyang Nangang Gas Station provided a venue for vehicle handover, providing free refueling for all ambulances and free meals for drivers.

　　At the beginning of the Wuhan epidemic, the Municipal Bureau of Commerce set up a command group for urban gasoline (diesel) oil supply, organized oil companies to start emergency plans, monitored the operation of the refined oil market every day, and coordinated and solved the difficulties and problems in oil supply, material transportation, employee commuting, and insufficient protective equipment at gas stations.

　　On New Year’s Eve, employees of PetroChina Wuhan Sales Branch received a proposal to fight against COVID-19 sent by the company. In less than eight hours, a total of 100 party member and two party activists volunteered to fight.

　　Li Shengxiong, an employee of Huangjinkou Gas Station of Wuhan Hanyang Branch of Sinopec, rode more than 20 kilometers from home to be on duty in order to ensure the duty on the second and third days of the New Year’s Day.

　　Since the outbreak, nearly 410 gas stations of PetroChina, Sinopec, Total and large-scale private oil companies have insisted on normal business, and 92#, 95# and 98# gasoline and diesel are complete, ensuring that "the oil is constantly supplied and the station does not close" and doing its best to protect the needs of citizens and epidemic prevention units.

　　(Reporter Wei Han Huang Shishi Tao Changning Zhang Ge correspondent Jin Bo Xie Minghui Xin Wang Cheng Jing Su Shouming Yang Jie Shang Yuming)

Perhaps the most impressive thing in Marvel Comics’s Iron Man movies is not Tony Stark’s cool Iron Man armor, but his artificial intelligence housekeeper-Jarvis.

In the film, "Jarvis" can be described as an AI housekeeper who helps Tony manage his super high-tech mansion.

Tony only needs to give an order by voice, and Jarvis can complete operations from opening the door and turning off the lights to booking a hotel to buy things, and even help Tony solve scientific problems.

Eleven years ago, in 2008, the first film of Iron Man was released. In the same year, the iPhone 3G was released, and people’s legs in the era of mobile Internet were just raised. When the Bluetooth headset was still a high-end gadget, Jarvis, a powerful artificial intelligence housekeeper, inevitably gave people a very sci-fi feeling.

At that time, I was wondering if I could have the opportunity to experience this powerful and caring AI assistant in my life. Considering the technical level at that time, I couldn’t help feeling that this was a "lifetime" flag.

Now more than ten years have passed, and the tide of mobile internet has completely changed people’s lives. True wireless Bluetooth headsets have also become a "street commodity" for everyone, and AI and loT have also become nouns that people talk about every day.

The kind of artificial intelligence housekeeper shown in the first part of Iron Man has also become not far away from us. In recent years, the concept of smart home has become more and more popular, and more and more related smart home solutions have become mature. I also began to think about buying some smart homes for my family. The first thing is of course to buy a smart speaker as the control center.

Smart speaker is the control center of smart home.

As we approach double 11, it’s natural to take a look at the discounts on smart speakers of major brands. Open the Tmall APP, the global carnival venue, and search for "smart speakers" to find that the Tmall Elf series products that I have been paying attention to before have great preferential strength during my stay in double 11.

At present, the common smart home solutions include Tmall Elf, Xiaomi Xiaoai and Apple Homekit. The first thing I excluded was Apple’s Homekit. Homekit’s smart home products are not only expensive but also extremely rare, and are rarely used in China. Secondly, Xiao Ai is excluded. Although Xiaomi’s smart home system is relatively perfect, Xiao Ai’s intelligence is shameful and there are many restrictions, which gives people the feeling that they are using a simple language remote control instead of a warm and intimate artificial intelligence housekeeper. Moreover, Xiao Ai’s smart home appliances are mainly Xiaomi eco-chain products, and they do not support mainstream first-line home appliance brands.

Homekit products are more expensive.

To be honest, the reason for choosing Tmall Elf is mainly the price. The price of Tmall Elf after double 11 discount is really very cheap, and some products also support the interest-free flower buds, which is also very intimate for people like me. Of course, the reason for choosing Tmall Elf is not only because of the low price, but also because of the rich smart home ecology of Tmall Elf.

Tmall elf AI alliance

Buying a smart home means buying an ecology, because from the moment you buy the first device, you have chosen this ecology. In the later period, you can only buy home appliances in this ecology, so it is very important to choose a good smart home ecology. The smart home ecology of Tmall Elf is officially called "Tmall Elf AI Alliance" by Tmall. One big difference from some manufacturers is that Tmall Elf is an open smart home ecology, except for Tmall’s own brand smart home. Many first-line big-name home appliances support Tmall Elf. At present, Tmall Elf can connect more than 40 categories, more than 600 brands and more than 2,100 models of smart devices, covering more than 70% of smart devices. .

Tmall Elf can connect more than 2,100 smart devices.

Unlike some smart speakers that act as "language remote controllers", Tmall Elf is very powerful in intelligence. In addition to the basic functions such as controlling the home to switch on and off some lights, commanding the sweeper, remotely controlling the air conditioner, inquiring about common information, alarm clock, etc., Tmall Elf can also achieve advanced skills such as taking the initiative to greet, playing voice games and accompanying children to read books.

Combined with Alibaba’s powerful e-commerce ecology, Tmall Elf can even charge phone bills, shop and even order food under voice, and truly become a qualified "intimate housekeeper".

Although the smart speaker is now more responsible for the task of smart home control center, its main business is still as a speaker. As an AI housekeeper, Tmall Elf is also a qualified speaker. Even if the current price of Tmall Elf series is less than 100 yuan, the sound quality has not been ignored.

The sound system of Tmall Elf Sugar Cube R supports DTS technology certification, and has a high-specification full-frequency NdFeB speaker unit, which has ultra-wide frequency response and ultra-low unparalleled low distortion. With a passive bass unit, the low frequency is more impactful. Equipped with DTS sound quality through professional tuning of golden ears, making the sound effect achieve the best effect.

As one of the largest audio content platforms in Chinese, Tmall Elf has the first tens of millions of its own music copyright library in the field of intelligent hardware, and directly signed cooperation agreements with many well-known copyright parties/key IP content to meet the content needs of different users. To give a simple example, for example, if you want to listen to a song, other smart speakers may not be able to play this song because of copyright issues, and the probability of this happening in Tmall Elf is extremely low.

Tmall Elf Sugar R Smart Speaker

Double 11 Tmall got the price: 79 yuan

Tmall Elf Sugar R is a smart speaker with high cost performance for Tmall Elf. You can experience the rich Tmall Elf ecology at a price of less than 100 yuan. The original price of Tmall Elf Sugar R is 199 yuan on weekdays, and the special price of double 11 is the same day.79 yuanAt the same time, it supports the 400-50 shopping allowance. Users who complete the order and payment in the first two hours of the same day (0: 00: 00-1: 59: 59 on the 11th) in double 11 have the opportunity to obtain the test drive qualification of Volvo polestar charter wine worth 3,888 yuan (8 in total).

Tmall Elf X1

Double 11 Tmall got the price: 199 yuan.

Tmall Elf X1 is a smart speaker with main performance. In addition to its rich Tmall Elf ecosystem, Tmall Elf X1 is unambiguous in hardware configuration. In addition to the powerful core with quad-core architecture and a 5W6Ω full-range speaker, in order to better pick up sound, Tmall Elf X1 is equipped with six microphones distributed around the top of the fuselage, no matter which direction you are in the speaker, Tmall Elf X1 can pick up your voice commands timely and accurately. The original price of Tmall Elf X1 was 499 yuan, and double 11 went straight to 300 yuan.The hand price is 199 yuanGrab the spot in advance.

At present, Tmall Elf X1 is being sold in the official flagship store of Tmall Elf. Interested friends can purchase it by poking it directly. double 11 went straight to 300 yuan and got a price of 199 yuan.

Tmall jingling QUEEN beauty cosmetics Jing

Double 11 Tmall got the price: 399 yuan.

Tmall Fairy QUEEN Beauty Mirror is a "cross-border" product with artificial intelligence implanted in the cosmetic mirror. It not only has good lighting effect and elegant design, but also has all the functions of AI smart speakers, such as listening to music, controlling home appliances, playing audio books, charging phone bills, shopping, forecasting weather, etc., and can definitely become your intimate housekeeper in daily life.

This 8-inch mirror has 64 lamp beads, forming a complete circular light source, with a brightness of 1100lux, which is consistent with the jewelry counter in mainstream shopping malls. It has set 3 color temperatures and 9 lighting effects. In addition, the Tmall Elf Queen uses the full spectrum and LED light source to restore the true color, so that the light of the Tmall Elf Queen can be kept in a state of not dazzling care, which is better enough to protect the eyesight.

The original price of Tmall Elf QUEEN Beauty Mirror is 699 yuan.Double 11 special price is 449 yuan., you can use 400-50 shopping allowance on the same day, and you only need to get the price.399 yuanCopy the reserve price for the whole year, and you will receive a cosmetic set with the value of 600 yuan if you complete the order and payment 2 hours before the day of double 11 (0: 00: 00-1: 59: 59 on the 11th).

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Topic: China vigorously introduces overseas high-level talents.

　　Qian Xuesen is a modern scientist in China, a world-famous rocket expert, an expert in engineering cybernetics in China, a system engineering expert and a system science thinker. A native of Hangzhou, Zhejiang Province, was born in Shanghai on December 11th, 1911. He graduated from Jiaotong University in 1934, went to study at Massachusetts Institute of Technology in 1935, got a master’s degree the following year, and then transferred to California Institute of Technology for further study under the guidance of tutor T.von Carmen. After receiving his doctorate in 1938, he stayed in school to teach and engaged in rocket and missile research. From 1947 to 1955, he was a professor at MIT and California Institute of Technology. After returning to China in 1955, he served as a member of the Aviation Committee, vice president and dean of the Fifth Research Institute of the Ministry of National Defense, president of the China Academy of Space Technology, vice minister of the Seventh Ministry of Machinery Industry, deputy director of the National Defense Science and Technology Committee, and deputy director of the Science and Technology Committee of the National Defense Science, Technology and Industry Committee. Joined the Communist Party of China (CPC) in 1959. In 1991, he served as honorary chairman of China Association for Science and Technology.

　　Qian Xuesen’s monographs include Engineering Cybernetics, Lectures on Physical Mechanics, Introduction to Interstellar Navigation and On System Engineering. More than 50 of his academic papers have been published in American journals and more in domestic journals. Qian Xuesen is a member of the Department of Mathematical Physics of China Academy of Sciences, honorary chairman of China Aerospace Society and vice chairman of China Association for Science and Technology.

　　Qian Xuesen served as the technical leader of China’s rocket and space program for a long time, and made great and pioneering contributions to space technology, system science and system engineering.

　　1. Applied mechanics

　　Qian Xuesen has done pioneering work in aerodynamics and solid mechanics of applied mechanics.

　　With feng? Carmen’s cooperative research on compressible boundary layer reveals some temperature changes in this field and establishes Carmen-Qian Xuesen method. In cooperation with Guo Yonghuai, the concept of upper and lower critical Mach numbers was first introduced into transonic flow.

　　2. Jet Propulsion and Space Technology

　　From the 1940s to the early 1960s, Qian Xuesen put forward some important concepts in the field of rockets and aerospace: in the 1940s, he put forward and realized the rocket-assisted takeoff device (JATO), which shortened the runway distance; In 1949, the concept of rocket passenger plane and the idea of nuclear rocket were put forward. In 1953, the possibility of interplanetary flight theory was studied; In the Introduction to Interstellar Navigation published in 1962, the concept of a round-trip transportation system between heaven and earth was put forward, in which a large plane with a jet engine was used as the first-stage vehicle and an aircraft with a rocket engine was used as the second-stage vehicle.

　　3. Engineering cybernetics

　　In the process of its formation, engineering cybernetics takes the engineering practice of designing stability and guidance system as the main research object. Qian Xuesen himself is the pioneer of this kind of research work.

　　4. Physical mechanics

　　In 1946, Qian Xuesen combined the physical, chemical and mechanical properties of rare gas, which was a pioneering work. In 1953, he formally put forward the concept of physical mechanics, and advocated that the macroscopic mechanical properties of matter should be determined from the microscopic laws, changing the previous method of measuring mechanical properties only by experiments, which greatly saved manpower and material resources and opened up new fields of high temperature and high pressure. In 1961, his Lectures on Physical Mechanics was officially published. Now the leader of this science is Professor Gou Qingquan. In 1984, Qian Xuesen suggested to Gou Qingquan that physical mechanics should be extended to the engineering technology of atomic and molecular design.

　　5. System engineering

　　Qian Xuesen not only refined the practice of China’s aerospace system engineering into the theory of aerospace system engineering, but also put forward the concept of the overall design department of national economic construction in the early 1980s. He also persisted in popularizing and applying the concept of aerospace system engineering to the whole country and national economic construction, and discussed the social system from the perspective of social form and open complex giant system.

　　6. System science

　　Qian Xuesen’s most important contribution to systems science is that he developed systematics and methodology of open complex giant systems.

　　7. Thinking science

　　(1) In the early 1980s, Qian Xuesen proposed to establish a department of thinking science and technology. He believed that thinking science is a science dealing with consciousness and brain, spirit and matter, subjective and objective, and it is a major department of modern science and technology. It is the need of computer technology revolution that promotes the scientific research of thinking.

　　(2) Qian Xuesen advocated that the development of thinking science should be combined with the work of artificial intelligence and intelligent computers. Based on his personal experience in the development of applied mechanics, he pointed out that the study of artificial intelligence and intelligent computers should take applied mechanics as a reference, take the road of integrating theory with practice and actually need theoretical guidance. He also believes that the establishment of thinking in images is a breakthrough in current thinking science research, and it is also the core issue of artificial intelligence and intelligent computers.

　　(3) Qian Xuesen applied the systematic scientific method to the research of thinking science, and put forward the systematic view of thinking, that is, first, based on the thinking process of logical units, he gradually built a first-order thinking system with a single thinking type, that is, he built abstract thinking, image (intuitive) thinking, social thinking and unique thinking (inspirational thinking). The second is to solve the problem of second-order thinking open large-scale system; Finally, the decision-making consultation high-order thinking open giant system.

　　8. Human science

　　Qian Xuesen put forward the theory of "human functional state" to describe the human body, an open complex giant system, and to study the structure, function and behavior of the system. Qian Xuesen is an advocate of physical science in Chinese.

　　9. Science and technology system and Marxist philosophy

　　Qian Xuesen believes that Marxist philosophy is the highest generalization of human understanding of the objective world and modern science and technology (including scientific social science). Qian Xuesen summarized the development of contemporary science and technology into ten closely related science and technology departments. The division method of these ten science and technology departments is another innovation of Qian Xuesen’s scientific classification method by applying Marxist philosophy, especially system theory. anecdote

　　1. The soul is Chinese childlike innocence.

　　"I have always believed that I will be able to return to my motherland. Today, I finally came back!" This is a very emotional remark made by Qian Xuesen, a famous scientist and rocket expert in China, to the comrades of China Travel Agency who received him when he returned to Guangzhou from the United States on October 8, 1995. He returned to China with his wife and two young children.

　　In August 1935, Qian Xuesen went to the United States to study and study aviation engineering and aerodynamics as a publicly funded international student. Before returning to China, he served as director of supersonic laboratory of California Institute of Technology and director of Guggenheim Jet Propulsion Research Center.

　　On October 1st, 1949, Mr. and Mrs. Qian Xuesen celebrated this festival with more than a dozen overseas students from China. While enjoying the moon, they poured out their feelings, rejoiced at the birth of the motherland and were full of longing for the bright future of the motherland. At this time, Qian Xuesen had a strong desire to return to the motherland at an early date and serve the country with his own expertise.

　　In July 1950, the US government decided to disqualify Qian Xuesen from participating in confidential research on the grounds that he had a friend relationship with Weinbaum, and accused Qian Xuesen of being an illegal immigrant from party member, communist party, USA. These groundless accusations were all rejected by Qian Xuesen. However, Qian Xuesen couldn’t stand all this and decided to return to his motherland immediately on the grounds of visiting relatives, ready to never return. He met with US Navy undersecretary kimble, who was in charge of his research work, and solemnly declared to kimble that he was ready to leave for home immediately. Kimble was shocked after hearing this.

　　Unconsciously, Qian Xuesen made all the preparations for returning to China, went through the formalities for returning to China, bought a plane ticket from Canada to Hong Kong, and handed over the luggage to the handling company for shipment.

　　However, just two days before their family planned to leave Los Angeles, that is, at midnight on August 23, 1950, they suddenly received a notice from the Immigration Bureau that they were not allowed to leave the United States. At the same time, the US Customs detained all Qian Xuesen’s luggage.

　　Qian Xuesen was forced to return to California Institute of Technology, and the FBI sent someone to monitor his family and all his actions. Far from it, on September 6, Qian Xuesen was suddenly illegally detained by the FBI and sent to the Immigration Detention Center for detention.

　　After Qian Xuesen was detained for no reason, the teachers and students of California Institute of Technology and Qian Xuesen’s teacher Feng? Carmen and some American friendly people protested strongly to the Immigration Bureau, found a defense lawyer for him, and raised $15,000 bail to bail Qian Xuesen out.

　　From then on, Qian Xuesen continued to be persecuted by the Immigration Bureau. His actions were restricted by the Immigration Bureau and monitored by FBI agents. He was not allowed to leave Los Angeles where he lived, and he was regularly questioned. Qian Xuesen lost his freedom for five years.

　　然而，钱学森挚爱祖国的赤子之心反而更加炽热。他日夜思念着新中国，他坚持斗争，不断地向移民局提出离开美国回国的要求。1954年用英文写出30多万字的《工程控制论》。实际上，工程控制论与生产自动化、与电子计算机的研制和运用、与国防建设都密切相关，只不过当时美国当局没有认识到这点就是了。

　　钱学森返回祖国的斗争，也得到祖国的关怀和支持。1954年4月26日，印度支那国际会议期间，中国代表团秘书长王炳南与美国代表团负责人亚?约翰逊分别代表两国政府开始关于平民回国问题的接触。在接触中，王炳南特别指出，美国正在阻挠许多旅居美国的中国人返回中国，其中包括科学家钱学森。

　　1955年6月的一天，钱学森摆脱特务监视，在寄给在比利时亲威的信中，夹带了一封书写在香烟纸上、给全国人大常委会副委员长陈叔通的信，请求祖国帮助他早日回国。陈叔通先生收到信的当天，就把它送到周恩来总理手里。1955年8月1日中美大使级会谈在瑞士日内瓦进行，王炳南大使按照周总理的授意，以钱学森要求回国的这封信为依据，与美方交涉，迫使美国政府允许钱学森离美回国。

　　1955年9月17日，钱学森与他的夫人和两个幼儿终于乘坐美国“克利夫兰总统号”邮船，离开了洛杉矶，驶向地处东方的祖国。

　　2．坚定的马克思主义者

　　1989年8月7日，中共中央总书记江泽民和国务院总理李鹏会见了钱学森，祝贺他获得1989年国际技术与技术交流大会授予的奖励和称号，认为“钱老获得这样的荣誉是当之无愧的。这不仅是钱老个人的光荣，也是中国的光荣，是中国科学技术工程人员的光荣”；钱学森的经历，“体现了一位中国知识分子所走过的曲折道路，也集中表现了中国知识分子的光辉品德”。

　　1981年秋至1982年夏，钱学森同中国社会科学院一位朋友的多次通信，是他品格的一个方面的真实生动的写照。

　　钱学森是一位自觉的马克思主义者。他在给一位朋友的信中说：“我近30年来一直在学习马克思主义哲学，并总是试图用马克思主义哲学指导我的工作。马克思主义哲学是智慧的源泉！而且一个马克思主义者是绝不会不爱人民的，绝不会不爱国的。”

　　After Qian Xuesen left the United States in 1955, he never went there again. In 1979, his alma mater, California Institute of Technology, awarded him the title of "Outstanding Alumni", in June 1986, the Southern California Chinese Scientists and Engineers Association awarded him an award, and in 1989, the International Technology and Technology Exchange Conference awarded him an award in new york, but he didn’t go. Qian Xuesen has a very friendly feeling for the American people and American scientists. For what reason does he think that he will never set foot on American soil again in this life? In 1985, an American friend told a leader in the State Council, China, about Qian Xuesen’s visit to the United States: "In the case of the US Immigration Bureau, money may have been deport at the beginning, so it must go through some kind of Amnesty procedure to enter the country. This is where you and Ambassador Han must come forward. If you really do this, you have to plead with the US government, or invisibly admit that their original measures are correct. This will not be satisfactory in Qian’s heart. " In a letter to a leading comrade in the State Council, China on March 9, 1985, Qian Xuesen gave a very frank answer: "It is not suitable for me to go to the United States. ….. The fact is that if I go to America now, I will’ prove’ many completely wrong things, which is not what I should do. For example, I am not forced to return to my motherland by the US government; As early as 1935, before I left the motherland, I promised my classmate Dai Zhongfu, an underground party member, that I would return to serve the motherland after my studies. My decision to return to China is my own business, and I have made preparations since 1949. ….. I think this is a question of right and wrong, and I can’t be silent.History cannot be distorted. Qian Xuesen’s character on this issue is exactly what General Secretary Jiang Zemin praised for his "high national self-esteem, national self-confidence and national integrity".

　　3. The bearer of the scientific torch

　　Qian Xuesen has always insisted on writing neat letters to young people asking for advice, and has always insisted on discussing problems and refining ideas with scientists in many disciplines with neat letters. Letters are a way for Qian Xuesen to publicize his belief in Marxist philosophy, guide scientific research with Marxist philosophy, and absorb scientific achievements to continuously deepen and develop Marxist philosophy. In a letter to He Zuoxiu, Qian Xuesen said: "The philosophical problem of quantum mechanics has been arguing for more than 50 years and has not been solved. Recently, Bell inequality has been verified, and the problem has become more serious. I think our physicists and philosophers in China should devote themselves to this research, solve it satisfactorily and develop Marxist philosophy in the process. "

　　From January 7th, 1986, Qian Xuesen personally led the scientific activities of "Systematic Seminar". The young and middle-aged scientists who participated in the seminar were from China Academy of Sciences, Peking University, Beijing Normal University, China Renmin University, China Academy of Social Sciences, Ministry of Aerospace Industry and other units. At the beginning of the seminar, Qian Xuesen proposed to this group of young and middle-aged scientists that we should absorb the research results of modern natural science and use it as the building material for establishing the basic science of system science and the general theory of all systems-"systematics".

　　At the Second National Congress of the National Association for Science and Technology held on March 15th, 1979, Qian Xuesen put forward the idea that "the modernization of science and technology must drive the modernization of literature and art" and put forward the concept of "scientific literature and art" to enrich and develop the connotation of popular science. Qian Xuesen is a loyal listener of popular science programs in china national radio, and a long-term reader of advanced popular science magazines Scientific American in the United States and New Scientist in the United Kingdom.

Editor: Zhao Xuanxuan

　 　 　 　 At present, designers like Stella McCatney, who are vegetarian, and brands such as MUJI Muji, which focus on pollution-free images, are vigorously practicing environmental protection in the fashion industry. For fashion consumers who don’t like them, this kind of brand with minimalist design looks a bit out of touch, which makes people feel cold and distant.

　 　 　 　 What kind of environmentally friendly fashion do you prefer to buy?

　 　 　 　 This spring, H&M released a new season’s limited series of environmental conscious actions-this is not a big news. Many people once took a bag of old clothes to H&M’s store, threw them into their white recycling bins, and then exchanged them for a "encouragement" discount coupon, or "accidentally" bought several clothes with green labels at H&M-the reason why this series attracted people’s attention was that. Zhou Xun, Wang Luodan and Eileen were all photographed wearing them to attend activities or even walk the red carpet. They looked very different from the previous "plain-faced" environmentally-friendly fashions. In addition, they were limited series, and many "stars with the same style" were sold out on the day of listing. In fact, the red carpet dress has always been synonymous with "no environmental protection". Those gorgeous and luxurious evening dresses usually exist only for a stunning appearance, and the possibility of being repeatedly worn is almost zero. Fashionable women other than stars will also find that once they wear those party dresses in their closets on major occasions, they will basically be put in the cold. It is imperative for H&M to classify this kind of "disposable" fashion as "environmental conscious action".

　 　 　 　 Prior to this, the well-known environmentally-friendly fashions were basically made of natural fiber fabrics, such as cotton, hemp and Tencel. This season, H&M added recycled sequins and beadwork for the first time, which told everyone that environmentally-friendly fashions can also grow secular and lovely. Veronique, the regional sustainable development manager of H&M, told the author that the public has a misunderstanding about environmentally friendly fabrics, thinking that only natural fabrics are environmentally friendly. In fact, things that can be recycled are also true. For example, we started to use recycled polyester fibers to make fluffy skirts last year, like this kind of clothes that need some hardness to support the shape, natural fibers are difficult to do. She also revealed that the brand’s next goal is to gradually dilute the boundary between the "environmental conscious series" and other product lines, and hope to adopt sustainable cotton for clothing in five years, that is to say, any cotton clothing (including jeans) you can buy at H&M at that time will be environmentally friendly fashion. I’m afraid that only brands like H&M can say such a big talk, and Swedish enterprises are indeed in the forefront of the world in environmental protection. Mary Turk, the clothing director of Stadsmission Stockholm, one of the largest second-hand chain retail stores in Stockholm, once expressed her wish to the media: "The so-called sustainable fashion should become a natural and ordinary part of life. When we no longer emphasize this concept, when it is truly integrated into our lives, it is truly recognized. "

　　　　　　　　Who should pay for environmental fashion?

　　　　　　　　In China, when it comes to environmental protection fashion, the most easily associated brand should be "useless". The founder Ma can promote coarse clothes made of cotton and linen and low-carbon handicrafts from the people with an image similar to that of an ascetic, and advocate "luxury poverty". What is somewhat incompatible with the "useless" simple, natural and original ecological style is its high price. Although it claims to be not a commercial brand, but a "non-profit organization dedicated to the protection of tradition and innovation of traditional folk handicrafts", it makes people wonder whether it intends to persuade everyone to make money to support a "sustainable" brand. Why should buying fashion be equated with doing charity? MUJI, who also advocates high-quality simple living, is obviously much more close to the people in terms of price. Consumers are keen to buy its products, not to show off how rich or tasteful they are (MUJI insisted on not marking the brand LOGO on the products from the beginning), but to figure out its humanized design and soft and comfortable texture, especially cotton and linen products. MUJI claims that he will go to the farm in person to communicate with the producers and use the safe and healthy cotton cultivated in the soil without pesticides and chemical fertilizers for more than three years, but it will not increase the price of the products. As one of the earliest brands that started to use organic cotton, MUJI started with baby products, and then went to underwear. Since 2010, it has been fully promoted to all product lines, and consumers may not know these things unless they ask the shop assistants or land in official website.Because MUJI did not pass on these organic cotton from India, Turkey and Tanzania as extra costs to consumers.

　　　　　　　　It is even more impossible for brands like H&M to use eco-fashion as a marketing gimmick to raise the price (their eco-conscious action series is priced the same as other series), because their consumers are particularly sensitive to the price. Then, how are these increased costs from recycling old clothes, recycling materials, treating polluted water, and researching and developing environmental protection materials digested? Julian, the sustainable supply chain manager of H&M, said that as pioneers of cheap and fast fashion brands, they always know how to control costs. Although the income and expenditure are not balanced at present, environmental protection is a must, so they can only find ways to make environmental protection less boring. The more people are willing to consume environmental fashion in the future, the more motivated they will be to increase investment and drive the whole industry to become sustainable.