Xinhua News Agency, Beijing, May 20th Question: About one out of every five primary and middle school students has a "chubby" student. Pay attention to these.

Xu Penghang

The quality of life has improved and the level of nutrition has improved, but there are more and more "chubby piers" around. Nutrition and health is an eternal topic during the growth of children and adolescents. May 20th is China Student Nutrition Day. What is the nutritional status of Chinese students? What harm can overweight and obesity bring? How to eat to be healthier?

Grow taller and gain weight.

The Scientific Research Report on Dietary Guidelines for Residents in China (2021) (hereinafter referred to as the "Report") shows that the nutritional status and physique of Chinese residents have improved significantly, the dietary quality has improved, the food structure has changed, and the nutritional deficiency of residents has been fundamentally improved. The growth retardation rate and low body weight rate of children under 5 years old have dropped to 4.8% and 1.9% respectively, which has achieved the preset goals of the 2020 plan. The anemia rate and vitamin A deficiency rate of children and adolescents have decreased significantly, and the nutritional status has improved significantly.

With the improvement of nutrition level, the height of children and adolescents in China has increased significantly. In the past 30 years, the height of boys and girls aged 6-17 has increased in all age groups, with an average height increase of 3cm every 10 years.

However, there are more "chubby piers" around. The data show that the overweight and obesity rates of children and adolescents under 6 years old and 6-17 years old in China reach 10.4% and 19.0% respectively, which is equivalent to nearly one "chubby pier" for every five primary and secondary school students. The problem of overweight and obesity of children and adolescents needs urgent attention.

The consumption rate of sugary milk drinks is 30%, which is one of the "culprits" of obesity.

Statistics show that the sales volume of sugary drinks is increasing year by year, and the consumption rates of sugary milk drinks and drinks for children and adolescents are above 30% and 25% respectively.

The report shows that although the intake level of added sugar among Chinese residents is not high, as the main source of added sugar, the proportion of consumers of sugary drinks and their consumption are on the rise rapidly. The consumption rate of sugary drinks among children and adolescents is higher than that of adults, which should be paid enough attention to.

Experts suggest that high sugar intake has become the main risk factor of obesity and diabetes in adolescents, and controlling sugar intake in adolescents is the key to promote the healthy growth of adolescents. According to statistics, the prevalence of hypertension in obese children and adolescents is 4.0 times of normal weight.

Balanced diet with reduced oil and salt

Chronic diseases are closely related to long-term dietary imbalance and excessive intake of oil and salt.

The data show that high salt intake is still widespread in China, and the average salt intake for household cooking is 9.3 grams per person per day, which drops by 2 grams every ten years, but it is still higher than the recommended value of < 5 grams.

In addition, high fat intake is also an important factor causing overweight and obesity. According to a survey conducted by the Nutrition Society of China, the top 10 dishes that are often bought for eating out and selling out are mostly fried food and animal dishes. People who mainly eat out and eat out for a long time have the problems of excessive consumption of oil and salt and unreasonable dietary structure.

Ding Gangqiang, vice chairman of the Nutrition Society of China and director of the Institute of Nutrition and Health of China CDC, suggested that reasonable diet, reducing the intake of livestock meat, smoked meat, salt, oil, added sugar and alcohol, and increasing the intake of whole grains, vegetables, fruits, eggs, seafood, milk, beans and nuts are beneficial to health.

Increase physical activity to achieve "eating balance"

Exercise plays an important role in human energy balance. To maintain a healthy weight, we should not only have a reasonable diet, but also strengthen exercise and maintain a "balance of eating".

The report shows that insufficient physical activity can lead to excessive weight gain, and more physical activity is not only conducive to maintaining a healthy weight, but also to reducing the risk of cardiovascular diseases, improving brain health and improving attention.

"Exercise is not a dietary suggestion, but it plays an important role in energy balance and weight maintenance." Ding Gangqiang said.

Ding Gangqiang introduced that most countries recommend exercising for 30 minutes a day or 150 minutes a week, and some countries (such as South Africa) also believe that each exercise should be no less than 10 minutes.

It is reported that the "14th Five-Year Plan" and the outline of the long-term goal in 2035 specifically propose to implement the nutrition improvement plan for preschool children, effectively control children’s obesity and myopia, ensure school physical education class and extracurricular exercise time, and carry out national physical fitness monitoring and intervention with emphasis on teenagers.

"Double Eleven" It’s coming.

With "full reduction", "big promotion" and "pre-sale"

Various marketing methods are coming.

Ladies and gentlemen, while shopping happily,

Have you also encountered problems?

Please accept the gift from the court

A warm reminder of "Dian"

I wish you a pleasant journey.

Where to sue for rights protection when encountering online shopping disputes?

Law express:

Article 23 of the Civil Procedure Law of People’s Republic of China (PRC): A lawsuit arising from a contract dispute shall be under the jurisdiction of the people’s court of the defendant’s domicile or the place where the contract is performed.

"the Supreme People’s Court on the application of

<中华人民共和国民事诉讼法>Article 20: In the case of a sales contract concluded through an information network, if the subject matter is delivered through the information network, the domicile of the buyer shall be the place of performance of the contract; Where the subject matter is delivered by other means, the place of receipt is the place where the contract is performed. Where there is an agreement on the place of performance in the contract, such agreement shall prevail.

Therefore, when an online shopping dispute occurs, unless there is an agreement between the buyer and the seller, the consumer can choose the court where the seller lives, or the court where the buyer lives or receives the goods.

"Double Eleven", the merchant of my online shopping shop asked for a "down payment". If I go back on my word after paying the down payment and don’t pay the final payment, can the down payment be refunded?

Deposit is a form of guarantee voluntarily agreed by the parties to the contract to ensure the performance of the contract. It is established when the deposit is actually paid. If the consumer who pays the deposit does not pay the final payment, he has no right to request the return of the deposit. On the other hand, if a merchant who has received the consumer deposit fails to perform the debt or the performance of the debt does not conform to the agreement between the two parties, it shall double the deposit.

In daily transactions, the terms deposit and deposit are widely used, but their nature is completely different. Deposit has the nature of guaranteeing the performance of the contract, but deposit is not a legal concept, but a idiom. Its purpose is to alleviate the cash flow shortage of the party receiving the deposit and thus enhance its performance ability.

Law express:

Article 586 of the Civil Code of People’s Republic of China (PRC) stipulates that the parties may agree that one party shall pay a deposit to the other party as a guarantee for the creditor’s rights. The deposit contract is established when the deposit is actually paid.

The amount of the deposit shall be agreed by the parties; However, it shall not exceed 20% of the subject matter of the main contract, and the excess shall not have the effect of deposit. If the actual amount of deposit paid is more than or less than the agreed amount, it shall be deemed as a change of the agreed amount of deposit.

Article 587th of the Civil Code of People’s Republic of China (PRC) stipulates that if the debtor performs the debt, the deposit shall be used as the price or recovered. If the party paying the deposit fails to perform the debt or the performance of the debt does not conform to the agreement, so that the purpose of the contract cannot be achieved, it has no right to request the return of the deposit; If the party receiving the deposit fails to perform the debt or the performance of the debt does not conform to the agreement, so that the purpose of the contract cannot be achieved, the deposit shall be returned twice.

After shopping, I accidentally found that the merchants displayed discounted goods during the Double Eleven period, but in fact the price was higher than the original price. How can I protect my rights?

Merchants’ fictitious original price and quiet price increase are suspected of price fraud, and if the seller constitutes fraud, the buyer can ask for "one refund and three compensation". You can complain to the e-commerce platform where the merchant is located, or call the "12358" price reporting hotline and the "12315" consumer rights protection hotline to report. If similar goods have been purchased, consumers can defend their rights through arbitration and litigation.

Law express:

Article 14 of the Price Law of People’s Republic of China (PRC) stipulates that an operator shall not commit any of the following unfair price behaviors:

(1) colluding with each other to manipulate market prices and harming the legitimate rights and interests of other business operators or consumers;

(2) Dumping at a price lower than the cost in order to crowd out competitors or monopolize the market, disrupting the normal production and operation order, and harming the national interests or the legitimate rights and interests of other operators, in addition to handling fresh commodities, seasonal commodities and overstocked commodities at a reduced price according to law;

(3) fabricating and spreading information about price increases, driving up prices and pushing up commodity prices too high;

(four) using false or misleading price means to trick consumers or other operators into trading with them;

(five) to provide the same goods or services, and to discriminate against other operators with the same trading conditions;

(6) Buying or selling goods or providing services by means of raising or lowering the grade, and raising or lowering the price in disguise;

(seven) profiteering in violation of laws and regulations;

(8) Other unfair price behaviors prohibited by laws and administrative regulations.

The first paragraph of Article 55 of the Law on the Protection of Consumer Rights and Interests in People’s Republic of China (PRC) stipulates that if an operator commits fraud in providing goods or services, it shall increase the compensation for the losses it has suffered according to the requirements of consumers, and the amount of compensation shall be three times the price of the goods purchased by consumers or the cost of receiving services; If the amount of additional compensation is less than 500 yuan, it is 500 yuan. Where there are other provisions in the law, such provisions shall prevail.

The baby I bought was damaged or lost in the mail. How should I settle the claim? Who should bear the responsibility?

The seller sends the goods to the delivery place agreed by both parties through the courier company, and the goods are not delivered before the buyer signs for them. At this time, the seller still bears the risk of losing the courier. If the purchased goods are damaged in the mail, the consumer should take photos and leave a certificate at the first time when receiving the courier, and claim compensation from the seller in time. If the seller has carried out the corresponding packaging protection for the goods, he can negotiate with the courier company to settle the claim. If the negotiation fails, he can bring the corresponding evidence to court.

Law express:

Article 512 of the Civil Code of People’s Republic of China (PRC) stipulates that if the object of an electronic contract concluded through information networks such as the Internet is to deliver goods and the goods are delivered by express logistics, the time of receipt by the consignee is the delivery time. If the object of an electronic contract is to provide services, the time specified in the generated electronic certificate or physical voucher shall be the time for providing services; If the time is not specified in the above-mentioned vouchers or the time specified is inconsistent with the actual time of providing services, the actual time of providing services shall prevail.

The subject matter of an electronic contract is delivered by online transmission, and the time when the subject matter of the contract enters the specific system designated by the other party and can be retrieved and identified is the delivery time.

If the parties to an electronic contract have otherwise agreed on the way and time of delivering goods or providing services, such agreement shall prevail.

Article 604 of the Civil Code of People’s Republic of China (PRC) stipulates that the risk of damage or loss of the subject matter shall be borne by the seller before delivery and by the buyer after delivery, unless otherwise stipulated by law or agreed by the parties.

Is "seven days no reason to return" applicable to all kinds of goods?

There is no reason to return goods for seven days, which protects the rights and interests of consumers to the greatest extent and is also conducive to the development of e-commerce. However, it needs to be clear that "no reason" does not mean "unconditional". Not all goods are subject to the seven-day unreasonable return rule. The seven-day unreasonable return rule does not apply to goods classified as fresh and perishable. For the purpose of seeking benefits, it is not applicable to return goods for seven days without reason if online shopping is needed beyond the reasonable daily consumption. At the same time, "should be in good condition" is the prerequisite for returning goods for seven days without reason.

Law express:

Article 25 of the Law of People’s Republic of China (PRC) on the Protection of Consumers’ Rights and Interests and Article 7 of the Interim Measures for the Seven-day Return of Goods Purchased through the Internet stipulate that consumers who purchase goods online have the right to return goods within seven days from the date of receipt of the goods without giving reasons, but they need to meet the following conditions:

1. Within seven days from the date of receiving the goods;

Second, the goods do not belong to the following types: (1) ordered by consumers; (2) fresh and perishable; (3) Digital goods such as audio-visual products and computer software downloaded online or unpacked by consumers; (4) newspapers and periodicals delivered; (5) Other commodities that are not suitable for return according to the nature of the commodities and confirmed by consumers at the time of purchase.

Have you learned the above little knowledge

When people bought it in buy buy,

Be sure to be rational.

Especially when shopping online.

Pay attention to the collection and preservation of relevant shopping evidence!

Editor: Fei Lichun

Original title: "@ 丫丫丫丫丫丫丫丫, please accept a" code "warm reminder from the court"

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　　China news agency, Beijing, July 22 (Reporter Zhang Su) China’s "Thirteenth Five-Year Plan" outlines the need to strengthen the strategic high-tech deployment in these four areas. At the routine briefing on the State Council policy held in Beijing on the 22nd, officials from the Ministry of Science and Technology of China made an interpretation.

　　Deep sea &mdash; &mdash; During the "Twelfth Five-Year Plan" period, a number of offshore equipment and offshore drilling platforms have been successfully developed, but there are still a lot of key technologies that need to be broken through in deep-sea resource exploration and national maritime rights and interests maintenance.

　　Xu Xu, director of the Innovation and Development Department of China’s Ministry of Science and Technology, said that one of the key points is to deploy the deep-sea space station, "to integrate and upgrade the system development and research of China’s deep-sea technology and equipment with systematic projects such as the deep-sea space station". In addition, the development of key marine equipment, deep-sea equipment and deep-sea sensor network will be strengthened.

　　Deeply &mdash; &mdash; In addition to the exploration and development of mineral resources and energy resources deep in the earth, it also includes the safe use of urban space, disaster reduction and prevention.

　　Xu Xu believes that the understanding of geology is very important. "The shallow layer is related to the construction of underground pipe network and infrastructure, and the deep layer is related to the development and utilization of important national strategic resources and energy."

　　Deep space &mdash; &mdash; It is necessary to carry out manned spaceflight project and lunar exploration project step by step, and also deploy and start the first Mars exploration to promote deep space exploration.

　　Xu Xu said, for example, that the the State Council Standing Committee of China recently adopted the "Thirteenth Five-Year Plan" for national scientific and technological innovation, and launched a number of new major scientific and technological projects, including systematic consideration of space development and utilization, such as on-orbit service of spacecraft and integrated information system between heaven and earth.

　　Deep blue &mdash; &mdash; Refers to the fields of cyberspace, information technology and artificial intelligence.

　　China occupies 167 seats in the latest list of the top 500 supercomputers in the world, and "Shenwei Light of Taihu Lake" tops the list. Tommy, Vice Minister of Science and Technology of China, revealed at the briefing that the research and development of quantum computers will be started in the future.

　　Xu Xu believes that the problem of information security and maintenance in modern cyberspace has become a key and difficult point. "The security of virtual space is very important for national rights and interests." He said that national cyber security is also "scientific and technological innovation 2030&mdash; &mdash; One of the major projects.

　　Tommy introduced, "Technological Innovation 2030&mdash; &mdash; There are 15 major projects, which will form a pattern of combining far and near with 16 major projects deployed in 2006, including quantum communication, intelligent manufacturing and robotics, clean coal utilization, comprehensive environmental management in Beijing, Tianjin and Hebei, etc. At present, the whole chain is being designed through a unified science and technology plan management platform. (End)

　　Cctv newsAt present, a new round of scientific and technological revolution and industrial transformation is booming. How can Beijing promote the construction of a national science and technology innovation center and accelerate the establishment of a science and technology innovation center with global influence?

　　On September 19th, the State Council Press Office held a series of press conferences of provinces (autonomous regions and municipalities). Chen Jining, deputy secretary of the CPC Beijing Municipal Committee and mayor of Beijing Municipal People’s Government, invited scientists and entrepreneurs from all over the world when answering questions from CCTV reporters. He said: at present, mankind is facing many global problems and challenges. These problems require the joint efforts of scientists from all countries and increase exchanges and cooperation between them. Beijing sincerely welcomes scientists and entrepreneurs from all over the world to come to Beijing for development, and Beijing will provide more convenient scientific research and living conditions.

　　The biggest advantage of Beijing is the advantages of talents and science and technology. In terms of innovative resources, Beijing is rich in talents and scientific and technological resources. There are more than 90 universities, more than 1,000 scientific research institutes, 120 national key laboratories, 68 national engineering technology research centers, about 860,000 college students and 25,000 national high-tech enterprises in Beijing. In terms of quality, Beijing’s innovation resources are better. Half of the top talents’ best disciplines and best laboratories are in Beijing, and Beijing’s R&D investment intensity is 6.17%, ranking first in the country. About half of the first prize of national scientific and technological achievements and the top ten scientific and technological progress in China come from Beijing every year.In terms of innovation vitality, Beijing is also a well-deserved city with the most active innovation and entrepreneurship in the world.There are about 200 innovative enterprises in Beijing every day, and the amount of venture capital and the number of cases account for about 30% of the whole country.If we look at VC/PE investment in technological innovation, Beijing is second only to Silicon Valley as a global city.In the latest list of unicorns, 82 enterprises in Beijing were selected, accounting for nearly half of the country. In some advantageous innovation fields, Beijing’s characteristics are even more obvious. For example, in the field of artificial intelligence, 60% of the country’s artificial intelligence talents gather in Beijing. Among the top 100 global artificial intelligence enterprises, there are 6 in China, including 5 in Beijing.

　　In the face of a new round of scientific and technological revolution and industrial transformation, Beijing, as a national scientific and technological innovation center, bears a major historical mission and national responsibility. Therefore, scientific and technological innovation is the most important work here, and three aspects of work are mainly grasped.The first is the construction of innovation system. The second is to innovate ecological construction. The third is the construction of innovative culture.

　　In terms of innovation systemBeijing has made a series of institutional breakthroughs in scientific research management, performance evaluation, rights and interests of scientific and technological achievements, long-term capital support, etc. All these are to solve some deep-seated problems in scientific and technological innovation, with the aim of stimulating the enthusiasm and creativity of all kinds of innovative subjects. Beijing has issued 28 regulations on scientific research projects and funds management, giving researchers more tolerance and trust, so that scientific research funds should be spent well as well. Beijing has established a number of new R&D institutions, such as Beijing Institute of Quantum Information Science, Brain Science and Brain-like Science Research Center. Through the construction of these new R&D institutions, the organization and management of scientific research can be solved, and a long-term stable support and an open and flexible employment mechanism can be formed. Beijing has also specially established a mother fund for scientific and technological innovation with a scale of 30 billion yuan to stimulate and attract social investment, which can be enlarged to 100-150 billion yuan. The most important feature of this fund is that its capital investment period can be 10-15 years, which is the longest investment innovation fund. Through the establishment of this parent fund, it is necessary to solve the problem of insufficient patient capital and long-term capital, and encourage innovative subjects to carry out long-term sustainable innovation in hard technology and deep technology.

　　Recently, Beijing is speeding up the study and promoting the revision of the Regulations on Promoting the Transformation of Scientific and Technological Achievements, which is a local legislation. It is hoped that the ownership of scientific and technological achievements, the distribution of transformation income, and the exemption from due diligence will be clearly defined in the form of law, and the core is to solve the property rights problem of scientific and technological achievements. The property right of scientific and technological achievements has been transformed from the ownership of state units in the past to the individual ownership of scientific and technological personnel, and the state can participate in the distribution, but the property right can be personal. Some scientists say that if this regulation is promulgated, it will realize their long-awaited "Children born by themselves can cultivate themselves into adults.”。

　　In terms of innovation ecologyBeijing mainly solves two problems. One is to strengthen the spatial ecological layout, that is, to promote the high-intensity agglomeration of various innovative elements in a limited space, so that chemical changes occur among these innovative subjects. The key point is to do a good job in the construction of "three cities and one district". The three cities are Zhongguancun Science City, Huairou Science City and Future Science City, and the first district is Beijing Economic and Technological Development Zone.

　　Zhongguancun Science City systematically lays out the basic frontier and key core technologies, improves the ability to open and gather global innovation resources, strengthens the city’s innovative image, and builds the original innovation source and the main position of independent innovation with global influence.

　　Huairou Science City focuses on the long-term scientific layout, and builds large-scale scientific devices such as comprehensive extreme condition experiments, numerical simulation of the earth system, and high-energy synchrotron radiation light sources to build a comprehensive national science center.

　　In the future science city east area, the current work focus is to revitalize the stock resources of central enterprises, introduce diversified innovation subjects, and create an "energy valley"; The Western District promotes the integration of science and education in Shahe University Town, especially taking Zhongguancun Life Park as the explosion point of the development of the medical and health industry in the city, and deepening the reform of the operation and management system of the park through the open introduction of professional teams.

　　Not long ago, Beijing Economic and Technological Development Zone completed its expansion, mainly to undertake the technological achievements of transforming the "three major science cities", build an open and innovative industrial cluster and a high-tech industrial main position, and at the same time link up with Tianjin and Hebei’s innovative industrial chains.

　　The second is to strengthen the ecological construction of the industrial chain, mainly relying on core enterprises, underlying technologies and public innovation platforms. By strengthening the construction of supporting conditions, the innovative elements of the industrial chain will be gathered to promote mutual support and collaborative innovation among industries. In 2017, Beijing issued guidance on the development of 10 high-tech industries, including the new generation of information technology, and also formulated corresponding supporting policies such as finance, land and talents. For example, the land policy, the full implementation of life-cycle management of industrial land, the implementation of flexible annual land transfer, first rent and then let, industrial land can only be used in industry, innovative land can only be used for innovation, support the construction of standard factory buildings for lease to enterprises, which not only greatly reduces the cost of enterprise land, but also prevents land hoarding and speculation. For example, in terms of talent policy, Beijing has greatly broadened the scope of talents around innovation chain, not only paying attention to scientists, but also bringing entrepreneurial investors, engineers, intellectual property lawyers and product managers into the innovative talent system to support them.Since 2018, more than 3,500 talents have gone through the introduction and settlement procedures.At the same time, Beijing is also highly concerned about solving it.The height of talentsProblems, focusing on the introduction and training of a number of.Strategic scientific and technological talents, leading talents in science and technology and leading talents in the industry.. Recently, more than 3,000 apartments for talents and experts have been specially set up in Beijing to support them.　　

　　In terms of innovative cultureVigorously strengthen the creation, protection and application of intellectual property rights, set up intellectual property courts, punish violations of intellectual property rights according to law, and significantly increase the illegal cost of intellectual property rights infringement. Recently, Beijing has specially established an intellectual property insurance system for small and medium-sized enterprises to improve the ability and level of intellectual property protection. In addition, Beijing has also increased its efforts to "send charcoal in the snow" for small and micro science and technology enterprises, and set up a financing guarantee fund of 10 billion yuan to improve the financial services for science and technology-based and innovative enterprises through angel investment, investment-loan linkage and intellectual property pledge loans.

　　Recently, Beijing has formulated and implemented a plan to accelerate the construction of application scenarios, and released the first batch of ten major application scenario construction projects with a total investment of more than 3 billion yuan, relying on urban governance, government services, and key projects of major events such as the Winter Olympics, the World Expo and Daxing International Airport. At the same time, a number of new application scenarios are collected for Zhongguancun innovation subjects every year. Beijing also pays special attention to strengthening innovation education, raising citizens’ awareness of innovation, making respecting knowledge and innovation become the consensus of the whole society, and creating an innovation culture that encourages innovation and tolerates failure.

　　In a word, by constantly improving the innovation system, optimizing the innovation ecology and advocating the innovation culture, Beijing has the confidence, conditions and ability to build itself into a scientific and technological innovation center with global influence.

Eating bamboo can make a fire, selling cute coquetry can make a fire, and even sitting and doing nothing can make a fire. As a "group pet" of Sichuanese, the giant panda has its own online celebrity attribute. But today, this giant panda in Sichuan is a bit unexpected-the giant panda has a new job and has become an ambassador for cultural tourism in Sichuan!

On September 25th, a naked-eye 3D promo featuring giant pandas with great visual impact kicked off the 6th China (Sichuan) International Tourism Investment Conference and the 7th Sichuan International Tourism Fair, which attracted attention.

In this naked-eye 3D promo, the giant panda "Anyi" came from ancient times, crossed many just visiting, and finally came to the scene of the 6th China (Sichuan) International Tourism Investment Conference and the 7th Sichuan International Tourism Fair, making a stunning appearance! This naive giant panda is the cultural tourism mascot launched in Sichuan. The mascot "Ease" carries many expectations of Sichuan cultural tourism. As the image ambassador of cultural tourism in Sichuan, "Ease" should go to the whole country and the whole world, and even more, it should enter thousands of households and invite tourists from all over the world to go to Sichuan in ease.

The emergence of "comfort" is expected.

Over the past year or so, the propaganda slogan of Sichuan cultural tourism, "Abundance in Three Ninth, Ease in Sichuan", has been widely known at home and abroad. With the continuous integration of cultural tourism in our province, new projects, new consumption scenes, new development models, new discoveries in resources, new achievements in undertakings, and new members of famous counties have sprung up like mushrooms after rain, and many "new" are constantly presented.

Flowers are blooming, and focus is needed. An image symbol that can gather many cultural and tourism characteristics of Sichuan and is easy to be recognized by the public-the giant panda "comfort" came into being.

Why is "Comfort" a giant panda?

As China’s national treasure, the giant panda has a high reputation and influence in the world. Taking the image of a cute giant panda with strong affinity as the mascot of Sichuan cultural tourism is conducive to telling Sichuan stories to tourists, enhancing Sichuan’s reputation, promoting Sichuan cultural tourism brands and showing Sichuan’s comfortable and beautiful life.

It is understood that the Sichuan tourism image ambassador launched this time highlights Sichuan’s "comfortable" culture from different angles, reflecting the humanistic spirit of Sichuan people’s openness, tolerance, friendliness and comfort. The panda’s "ease" is lively and lovely, humanized and friendly, and easy to spread. It is the best choice to be the ambassador of Sichuan cultural tourism image. &ensp;(grey hair&ensp;Image courtesy of Sichuan Provincial Department of Culture and Tourism)

1905 movie network news Starring in the gangster movie "Disaster", an international poster was released, directed by Jin Changxun, and new actors Hong Sibin and Jin Xingxi participated. The film was shortlisted for the "One Concern" unit of the 76th Cannes International Film Festival.

The film is known as "film noir of two dangerous men struggling to get rid of the reality with no future", which is the first time that Song Joong Ki has challenged the film noir genre. It is reported that the film "Trouble" is a work selected by Song Joong Ki and co-produced by a Song Joong Ki brokerage company, which belongs to a low-budget film with a small production scale. Surprisingly, as the starring role of the film, Song Joong Ki did not receive any remuneration, but starred at 0. This has also greatly increased everyone’s curiosity about movies.

The film tells the story that in order to get rid of the hellish reality, Yan Gui meets Qi Jian, the middle boss of the organization, and enters a dangerous world together. Song Joong Ki plays the role of the middle of the organization that believes in and leads "Yangui"bossFor him, the role of "Qi Jian" is a brand-new breakthrough different from his previous roles. Hong Sibin plays the 18-year-old boy "Yan Gui". In order to get rid of the tragic and dark reality, he devoted himself to the rough world.

Song Joong Ki said before: "Can participate in"disaster and turmoilI am very happy, this work is also a new challenge for myself, and I am deeply touched. "

Benmao

Cloned cat

　　On the 19th of this month, the first commercial cloned cat in China was officially announced. This cloned cat named "Garlic" was born on July 21st this year. "Garlic" is also the first cloned cat in China.

　　It is understood that Huang Yu, the owner of the cloned cat "Garlic", chose cloning technology to restart a new life in order to commemorate the dead pet cat. This cloned cat was born on July 21st through natural delivery of surrogate cats.

　　Is the cloned cat "Garlic" the same as the deceased pet cat? Why is the coat color changed? Weekly reporter interviewed experts from Jiangsu Key Laboratory of Xenotransplantation to reveal the story behind cloning.

　　Cloning: the asexual reproduction of an organism

　　In 1963, Haldane, a population geneticist, first put forward the term "cloning" in a speech entitled "Biological Possibility of Human Race in the Next 20,000 Years".

　　In 1997, the news that a sheep named Dolly was born through cloning technology immediately attracted the attention of all over the world. Since then, cloning has become a hot topic for everyone.

　　Clone is a transliteration of the English word clone. Its original meaning refers to the cultivation of plants by asexual propagation or vegetative propagation of seedlings and shoots. With the passage of time, the connotation of cloning has expanded, which generally refers to the asexual reproduction of organisms through somatic cells and the population composed of offspring individuals with the same genotype formed by asexual reproduction; Usually, individuals or populations with exactly the same genes as the original individuals are produced by asexual reproduction using biotechnology.

　　In fact, cloning is no stranger to us. We often use this biological method of asexual reproduction in our daily life. For example, whenever spring blossoms, people who like to plant flowers and grass will do experiments in plant cutting. From a plant, cutting branches and cutting will get many plants with the same genetic material, which is cloning. Asexual reproduction is more common in lower organisms. The division and reproduction of bacteria and planarian is that the parent splits vertically or horizontally into two daughters, and then leaves the parent and becomes an independent individual, which also belongs to cloning.

　　However, does asexual reproduction exist in higher organisms? Scientists once thought that it was impossible to reproduce asexually from a mature somatic cell into a complete animal. Although a somatic cell contains a complete genetic information of an animal, somatic cells have been specialized. Generally speaking, liver cells can only produce liver tissue, and breast cells can only produce breast tissue &hellip; &hellip; The birth of Dolly sheep completely changed people’s understanding, and it pioneered the cloning of higher animals.

　　"First, the nucleus of a donor cell containing genetic material is transplanted into an egg cell with its nucleus removed, and then the two cells are integrated by micro-current stimulation, and then this new cell is promoted to divide and reproduce and develop into an embryo. When the embryo develops to a certain extent, it is implanted into the uterus of a surrogate animal to make the animal pregnant, and an animal with the same gene as the donor can be born." Li Rongfeng, a researcher at Jiangsu Provincial Key Laboratory of Xenotransplantation, introduced the cloning process of higher organisms.

　　She said that cloning technology does not need male-female mating, and does not need the combination of sperm and eggs. It only needs to extract a single cell from an animal, cultivate it into an embryo by artificial methods, and then implant the embryo into a female animal to breed a new individual. This cloned animal cultured with single cells has exactly the same characteristics as the single cell donor and is a "replica" of the single cell donor. Scientists in England and Oregon in the United States have successively cultivated Dolly, a cloned sheep, and Dolly, a cloned monkey. Scientists in China have gradually cultivated cloned cattle, cloned rabbits, cloned pigs and the latest cloned cats.

　　Wonderful cloning technology has shown broad application prospects, such as cultivating excellent livestock and producing experimental animals, producing transgenic animals, producing human embryonic stem cells for cell and tissue replacement therapy, replicating endangered animal species, preserving and spreading animal species resources, and maintaining ecological balance.

　　Four surrogate mothers gave birth to a cloned cat.

　　On January 9 this year, Huang Yu, the owner of the deceased pet cat, formally proposed to Beijing Xinuogu Biotechnology Co., Ltd. to clone "garlic" because he missed it too much.

　　After exploring the pre-experiments such as in vitro maturation culture conditions and parthenogenetic activation conditions of oocytes, the research and development experiment of cloned cats was officially started in August 2018, with a total of 152 experiments. Up to now, one surrogate cat has been successfully delivered, and one surrogate cat has been tested for pregnancy and delivery. In the "Garlic" project, a total of 4 surrogate cats were embryo-transferred. Among them, the surrogate cat CNTR258 was born naturally on July 21st, 2019, 66 days after embryo transfer, and the cloned cat Garlic was successfully produced. Garlic is a very cute British short-haired cat.

　　"Like the general principle of cloned sheep and cloned pigs, we knock out and enucleate the genes of surrogate cats after obtaining the oocytes of surrogate cats, and then implant the cells of cloned cats to form a fused cloned embryo for activation." Wang yining, deputy general manager of Beijing xinuogu biotechnology co., ltd, introduced the birth process of cloned cat "garlic".

　　"Judging from the current level of cloning technology, from the pregnancy of four surrogate cats, a cloned cat was successfully produced, and the success rate was high." Chen Dayuan, a researcher at the Institute of Zoology, Chinese Academy of Sciences, believes. Li Rongfeng also said that as a new cloned species, the pregnancy rate of 25% is very high. Take the cloned pigs of Jiangsu Provincial Key Laboratory of Heterogeneity Transplantation as an example. At present, one to three transgenic cloned pigs can be obtained after transplanting 100 embryos, and the cloning efficiency is about 3%.

　　Shi Zhensheng, a professor at the College of Animal Medicine of China Agricultural University, said: "The reproductive physiological characteristics of cats are different from those of most animals, because cats are not spontaneous ovulation animals, but one of the few ovulation-inducing animals. Their reproductive cycle is special, and cloning technology is difficult and complicated to operate. This successful breeding of cloned cats is one of the few successful cases in the world, marking a big step for China in the field of cloning. "

　　"For the public, spending 250,000 yuan to clone a cat may not be understandable. But I was very happy when I knew that the cloning price was 250,000 yuan. " Huang Yu, the owner of "Garlic", said that he had searched online, and there was a cloning company in South Korea that cloned cats and dogs at a price of 400,000 to 500,000, which was unacceptable. The domestic cloned cat price of 250,000 yuan is acceptable.

　　It can provide reference for cloning pandas.

　　On August 21st, the cloned cat "Garlic" was full moon. From the photos of garlic published on the Internet, we can find that there is a slight difference between the cloned garlic and the original garlic: there is a small black piece on the chin of the original garlic, but the cloned cat is gone; There are patterns on the left leg of the body, and the pattern of cloned cats grows on the right leg.

　　"There are epigenetic problems in the process of animal cloning. The so-called epigenetic problem is that environmental factors will lead to different gene expressions in organisms, but the genes themselves will not change." Li Rongfeng explained that the genes in the cloned cat’s gene nucleus are the same as the original genes from the cat’s cells, but there will be differences in gene expression during the reprogramming of somatic cells. The genes are inherited from the previous cats, but some genes are not expressed or over-expressed; In the cloned cat "garlic", there is a phenomenon that the coat color related genes are not expressed correctly.

　　Beijing Xinuogu Biotechnology Co., Ltd. also responded: "Cloning ensures that more than 99.9% genes are the same, but the hair gene expression is random. There are patterns on the body, and there is no guarantee of 100% consistency. " At the same time, Beijing Xinuogu Biotechnology Co., Ltd. also pointed out that cloned cats can not guarantee the same living conditions and feeding environment as ontologies, and their personalities may change.

　　So what changes may occur in personality? Li Rongfeng said that there are many acquired factors in the formation of cloned cats’ personalities, just as human twins will have different personalities in different environments; But there are some basic personality-determining genes. If they exist in the nucleus, their personality will not change greatly even if the environment is different.

　　What is the significance of the birth of the cloned cat "Garlic"? Li Rongfeng said that from the economic point of view, it is not as important as meat animals, but it caters to the emotional needs of some people, such as pet owners; It is also of great significance to be able to play a companion role.

　　"There is also a great significance in cloning cats, which are closer to giant pandas than pigs and dogs." Li Rongfeng said that the giant panda is a rare and endangered species and it is difficult to clone. The success of cloning cats can provide reference for the cloning of rare and endangered species such as giant pandas.

　　Reporter Zhang Xuan

Editor’s Note: 2022 is the year of the 20th National Congress of the Communist Party of China and the centenary of the founding of the Communist Youth League of China. A nation will prosper only when its young people thrive If the younger generation has ideals, skills and responsibilities, the country will have a future and the nation will have hope. Red Net Moment News will launch the column "Strugglers are Youth" from now on, telling how the contemporary youth passed the torch of a century of youth, and what kind of youthful blood and passion they used to meet the party’s 20 th victory.

Xin Yang, Professor and Doctoral Supervisor, School of Electrical and Information Engineering, Hunan University.

Red Net News Reporter Liu Zhixiong Zhu Liping Intern Hu Xinghai Changsha Report

If the integrated circuit field represented by CPU is the "brain" of modern equipment, then the power semiconductor chip is the "heart" that provides power. After returning from Cambridge University, Xin Yang, a professor at the School of Electrical and Information Engineering of Hunan University, devoted himself to the research of power semiconductors. He wanted to build "China Core".

"Our country was 30 years behind in this respect and was stuck in the neck for too long." Xin Yang said with emotion.

Xin Yang’s concern about power semiconductors stems from a teacher’s words during his undergraduate period. "Power semiconductors are the core of electric energy conversion, and a generation of power semiconductor chips determines the performance of a generation of equipment." It also originated from Xin Yang’s "China Heart". Since childhood, parents have taught Xin Yang to be an indispensable talent for the country.

Previously, the research results of the subject with Xin Yang as the first author were published in a top international academic journal of physics. This achievement provides a new idea for solving the serious oscillation problem of new power semiconductor.

"This achievement can give full play to the advantages of fast switching speed and low loss of the third generation semiconductor devices, which is of great significance for the development of high power and extremely high power density converter equipment." Xin Yang introduced.

Semiconductor components used in experiments in Xin Yang.

Power semiconductors are widely used, ranging from high-speed trains to mobile phone chargers.

"Almost everything involving electric energy conversion requires the participation of power semiconductors." Xin Yang said, "But our country once lagged far behind Europe in power semiconductor devices including IGBT (Insulated Gate Bipolar Transistor)."

IGBT has long been monopolized by developed countries. In 2009, in order to learn advanced semiconductor knowledge, Xin Yang studied for master’s degree and doctor’s degree in Imperial College London and Cambridge University.

During his stay at Cambridge University, Xin Yang firmly decided to return to China in contact with CRRC Zhuzhou Institute and related companies. "Many of our own technologies are not advanced, so we have to look at others’ faces. That feels terrible. " Xin Yang said, "At that time, I felt that the country urgently needed this technology, and it was time for me to realize my self-worth and serve the motherland."

Yang Xin takes students to work in the laboratory.

In 2015, Xin Yang returned to his native Hunan from Britain. In 2018, he was hired as a professor and doctoral supervisor at the School of Electrical and Information Engineering of Hunan University. Hunan University’s relatively complete incentive system for young teachers and the free and open academic environment at the foot of Yuelu Mountain have given Xin Yang great impetus.

In recent years, Xin Yang has presided over or participated in several national scientific research projects, published more than 40 high-level papers and applied for more than 20 invention patents.

"I went out with an initial intention to study for my country. After I came back, I felt that the country, especially Hunan, attached importance to talents. Only by redoubling efforts and making achievements can we live up to the expectations of the party and the people." During the conversation, Xin Yang said many times that he wanted to contribute to the country’s breakthrough in key technologies.

In Xin Yang’s view, his academic achievements can not be separated from the support of relevant national policies. He was selected into the relevant national talent plan, and his learning experience in the team of Luo An, an academician of China Academy of Engineering, also benefited from the Hunan Young Talents Support Program.

Xin Yang is with his students.

Nowadays, the importance of chips to modern industry is becoming more and more prominent, and talents are the key to technological leadership. Xin Yang pays special attention to the matter of taking students, and his latest research results include many master students. "Academician Luo An has given me a lot of help. As a teacher, I should also teach my students what I have learned without reservation. The happiest thing is that my students are better than me academically."

In the next six months to a year, Xin Yang will focus on building a new reliability evaluation method for power semiconductors. "At present, the evaluation of power semiconductors is still relatively extensive. We hope to reach the degree of calculation reliability and know the service life of IGBT components more accurately, and then deduce more advanced and reliable power semiconductor packaging technology."

In addition to constantly pursuing the optimization of chip performance indicators, looking to the future, Xin Yang wants to make some subversive achievements in originality theory. "Time is still tight." Xin Yang ridiculed his increasingly backward hairline. After devoting himself to scientific research, Xin Yang almost had no entertainment activities. "But doing research with students is very happy, and I don’t feel tired when I work overtime."

"I hope that when the country stands at the forefront of the world in the field of power semiconductors one day, I can be proud to have contributed a little to it." Xin Yang said.