广州桑拿

[Editor’s note]

The US military believes that Russia and other big countries have begun to deploy hypersonic missiles, which poses a great challenge to the US military’s existing missile defense system. In order to continue to maintain its dominant position, on the one hand, the US military actively develops hypersonic weapons to achieve reciprocal deterrence; On the other hand, we should speed up the research and development of anti-hypersonic weapons and strengthen the ability of active missile defense systems to intercept hypersonic weapons in order to cope with possible high-end wars in the Asia-Pacific region.

Since Trump took office, he has shifted his national strategy from anti-terrorism to competition among big countries. In the "Missile Defense Assessment" report released in January 2019, the US Department of Defense listed hypersonic threats as the focus of missile defense. Hypersonic defense is gradually attached great importance to by the US military. Both the US Missile Defense Agency and the Defense Advanced Research Projects Agency (DARPA) actively promote the demonstration and verification of hypersonic defense technology and project research and development.

A series of recent trends show that the US military will first develop the sea-based anti-hypersonic capability, and plan to equip it on the Aegis ship and launch it by the existing MK41, which is mainly used for the so-called hypersonic regional defense in the Indo-Pacific region. Based on the project of "Hypersonic Defense Zone Gliding Section Weapon System", the sea-based anti-hypersonic missile is planned to adopt the "Standard" -6 1B missile, and the interception test of hypersonic gliding section will be carried out in FY 2023.

The US Navy’s "arleigh burke" class destroyer launched the "Standard" -6 missile, which can intercept hypersonic weapons in the future.

Multi-dimensional promotion of anti-super ability development

The missile defense agency is mainly responsible for the high-level defense of the United States, which is mainly responsible for the top-level planning and design of the hypersonic defense system, the research and development of weapon systems, the research and development of key technologies, and the construction of systems engineering. The Joint Chiefs of Staff of the United States and the United States Air Force participated in the demand demonstration stage; DARPA also conducts research and development of advanced defense component technology. In the summer of 2019, the US Department of Defense formulated a road map for hypersonic defense architecture, but the contents of the road map were not made public. Mike White, deputy director of the US Department of Defense’s Hypersonic Project, said in an interview that the US hypersonic defense adopts a comprehensive and layered defense strategy, which will comprehensively use pre-launch strikes and active and passive defense means such as kinetic energy and non-kinetic energy to defend against competitors’ hypersonic weapons in the active phase, re-entry gliding phase and final phase.

The construction of American hypersonic defense system will be mainly based on the existing ballistic missile defense system, and finally form an integrated defense capability against hypersonic threats and ballistic missile threats through improvement and new research. At present, the Missile Defense Bureau is promoting the development of hypersonic defense capability from multiple dimensions such as architecture, early warning and detection, command and control, and interceptor.

In addition to improving the existing system, the US military has developed four hypersonic defense projects: Hypersonic and Trajectory Tracking Sensor System (HBTSS), Hypersonic Defense Weapon System (HDWS), Hypersonic Defense Zone Glide Weapon System (RPGWS) and Glide Breaker.

Early warning detection is the basis of hypersonic defense. In order to reduce the cost, the United States is seeking to install sensors for detecting hypersonic on low-orbit commercial satellites.

(1) Hypersonic and ballistic tracking sensor systems

Early warning detection is the basis of hypersonic defense. The system of Hypersonic and Ballistic Tracking Space Sensor, formerly known as Missile Defense Tracking System (MDTS) and Space Sensor Layer (SSL), consists of about 200 50-500 kg sensor loads deployed on low-orbit commercial satellites, aiming at eliminating gaps in sensor networks and continuously tracking complex ballistic missiles and hypersonic weapons from launch to interception. Missile Defense Agency is responsible for sensor load research and development, Space Development Agency is responsible for architecture design, Defense Advanced Research Projects Agency is responsible for load platform design and constellation management, and Air Force Space and Missile System Center is responsible for mission requirements design. In October 2019, the Missile Defense Agency awarded Northrop Grumman, Leidos, L3 and Raytheon the second phase of the project, which was used to complete the design of the load prototype, signal chain processing and software algorithm research. According to the National Defense Authorization Act of FY 2020, the "Hypersonic and Ballistic Tracking Space Sensor" system should be tested in orbit on December 31, 2021, and reach its initial operation capability after 2023.

Hypersonic and trajectory tracking space sensor system belongs to the "tracking layer" of the next generation space architecture (consisting of seven constellations) proposed by the Space Development Agency (SDA). In order to avoid redundant construction and make better use of commercial space technology to accelerate the formation of capabilities, in the budget for fiscal year 2021, the US Congress has transferred the system dominance from the Missile Defense Agency to the Space Development Agency.

(2) Hypersonic defense weapon system

In September 2018, the Missile Defense Agency announced the "Hypersonic Defense Weapon System" project, awarded 21 program research and development contracts to 8 units, and began research and development in the concept definition stage; In September 2019, five schemes were selected from 21 schemes and awarded contracts to carry out R&D in the concept improvement stage.

The five research programs awarded mainly include:

Lockheed Martin’s "Javelin-Hypersonic Defense Weapon System" (DART) scheme, based on the improvement of "Sade" interceptor, is mainly used for long-range interception, intercepting in the middle of hypersonic warhead gliding, and forming a layered interception capability with "Valkyrie-Hypersonic Defense Terminal Interceptor";

Lockheed Martin’s "Javelin-Hypersonic Defense Weapon System" scheme, based on the improvement of Patriot -3 MSE missile, is mainly used for short-range interception, intercepting the hypersonic warhead in the later and last stages of gliding, and forming a layered interception capability with "Valkyria-Hypersonic Defense Terminal Interceptor";

Boeing’s "Hypervelocity Interceptor for Hypersonic Weapons" (HYVINT) scheme;

Raytheon’s SM -3 Hawk scheme is based on the improvement of the SM -3 missile.

Raytheon’s "non-dynamic hypersonic defense concept" scheme is a non-dynamic scheme based on high-power microwave weapons.

Russia has equipped a variety of hypersonic missiles in recent years, ahead of the United States. The picture shows the dagger hypersonic missile.

(3) Weapon system of gliding section in hypersonic defense area

On December 5, 2019, the US Missile Defense Agency issued a request for information on the prototype design of the "hypersonic regional defense gliding section weapon system", seeking to quickly design, develop and demonstrate the prototype of the hypersonic regional defense weapon system. On December 18th, the Missile Defense Agency held the Industrial Day of this project to discuss the technical approach of hypersonic defense and further disclose the details of the project requirements to the industrial sector.

"Hypersonic defense zone gliding phase weapon system" emphasizes "gliding phase" and "zone defense", indicating that the defense object of this system is not a hypersonic gliding warhead carried on an intercontinental ballistic missile like Russian Pioneer, but a hypersonic gliding warhead carried by a medium-range ballistic missile.

(4) Gliding saboteurs

DARPA presented the concept map of "Gliding Destroyer" for the first time at the 60th anniversary seminar held from September 5 to 7, 2018. On November 6, 2018, DARPA released a wide-ranging institutional announcement of the "Gliding Destroyer" project, aiming at developing and demonstrating the technology of hypersonic defense weapon components. In February, 2020, DARPA awarded Aerojet-Rockdyne a "gliding destroyer" propulsion technology research and development contract worth 19.6 million.

This month, the United States conducted a hypersonic missile launch test

The US Navy tested anti-superb capability in 2023.

On February 10th, 2020, at the budget conference of FY 2021 held by the US Department of Defense, a reporter asked Jon Hill, director of the US Missile Defense Agency, about the progress of the project "Hypersonic Defense Weapon System", focusing on the research and development progress of five programs such as "Javelin-Hypersonic Defense Weapon System" and "Valkyria-Hypersonic Defense Terminal Interceptor". Jon Hill said, At present, there are only two hypersonic defense projects of the US Missile Defense Agency, namely "Hypersonic Defense Area Gliding Phase Weapon System" and "Hypersonic and Ballistic Tracking Sensor System". The projects mentioned by the reporter are only the preliminary verification projects of the project. Whether it is true or not is intriguing.

On March 4th, 2020, Jon Hill, director of the Missile Defense Bureau, said at the annual national defense planning conference in mcaleese that the "hypersonic defense zone gliding phase weapon system" will be first equipped on the "arleigh burke" class destroyer, launched by the MK41 vertical launch system, and then equipped in the air or other platforms. On March 11, 2020, US Deputy Secretary of Defense Michael Griffin revealed for the first time in his testimony in the House of Representatives that the US Navy and the Missile Defense Agency plan to test the ability of the Standard -6 missile to intercept hypersonic targets in fiscal year 2023; On March 13th, Jon Hill, director of the Missile Defense Agency, confirmed this statement again in his testimony in the House of Representatives.

The range of the standard "-6 1B missile has been greatly increased by replacing it with a booster with a larger diameter, reaching 560~800 kilometers.

The "Standard" -6 missile is a new generation of multi-functional missile developed by Raytheon Company. It was developed in September 2004, the initial design review was completed in June 2005, the first test was successful in June 2008, and mass production began in 2013. The "Standard" -6 missile adopts the "Standard" -2 Block 4 missile body, MK104 dual-thrust solid rocket engine and MK41 booster, and the seeker adopts the active radar seeker of AIM-120 advanced medium-range air-to-air missile, with a range of 370 kilometers and a shooting height of 34 kilometers. Compared with the "Standard" -2 missile, the "Standard" -6 missile focuses on strengthening the interception capability of low-altitude and ultra-low-altitude cruise missiles, and has anti-ship and limited terminal anti-missile capabilities.

The US Navy first joined the "Standard" -6 1B missile project in the budget of fiscal year 2020, which belongs to the 2063 sub-project of "Standard Missile Improvement" (project number 0604366N), with the expenditure of $116.7 million in fiscal year 2020, and it is planned to invest about $380 million in the next five years. Compared with the Standard -6 1A missile, the Standard -6 1B missile continues to use the original seeker and warhead, but the original 343mm MK104 engine is upgraded to the 533mm engine used in the Standard -3 2A missile. It is expected that the range will be increased to 560-800km and the flying speed will reach the hypersonic level.

The "Standard" -6 1B missile is planned to undergo CDR in FY 2020, LRIP in FY 2021, and reach initial operational capability (IOC) in FY 2023. In the fiscal year 2021 budget, the U.S. Navy substantially increased the R&D funds for the "Standard" -6 1B missile, which was 232 million U.S. dollars in fiscal year 2021 and increased to about 570 million U.S. dollars in the next five years, which proves that the U.S. military plans to develop the anti-superb capability of the "Standard" -6 1B missile.

Fiscal year 2023 is the key node of the US military’s sea-based anti-superb capability.

The Standard -6 1B missile uses the 21-inch engine of the Standard -3 2A missile, and its range and firing height are significantly improved. First, with the help of the Naval Integrated Fire Control-Air Defense (NIFC-CA), it will significantly enhance the over-the-horizon anti-ship capability of the Aegis ship and improve the safety depth of the fleet. Second, it will improve the anti-missile capability of the terminal part of the Aegis ship and make up for the defense gap between the Standard -3 missile and the Standard -6 1A missile; The third is to give the Aegis ship anti-hypersonic capability. The "Standard" -3 missile has a high shooting height and the "Standard" -6 1A missile has a limited shooting height and range, so it is basically difficult to intercept hypersonic missiles.

After the deployment of the Standard -6 1B missile, the Aegis system, together with Standard -3, Standard -6 1A, Standard -2, improved Sea Sparrow, Ram and Tomahawk, will form a multi-layer and integrated air defense, anti-missile, anti-superb and anti-ship capability.

tag

The U.S. military has formulated an ambitious road map of hypersonic defense architecture, but the focus of the U.S. military’s hypersonic defense is the booster gliding warhead mounted on the medium-range ballistic missile, which will be deployed on the Aegis ship in the Asia-Pacific region first.

The fiscal year 2023 is the key node of the US Army’s sea-based anti-hypersonic capability. At that time, the "Hypersonic and Ballistic Tracking Sensor System" will reach the initial operational capability, which can continuously track hypersonic weapons, and the "Standard" -6 1B missile will reach the initial operational capability, or can conduct anti-hypersonic tests. The "Standard" -6 missile will be the first missile with air defense/anti-superb, anti-missile and anti-ship capabilities.

    Recently, the 20th China (Changchun) International Automobile Expo officially opened. As an important window to show the development history and industrial foundation of Changchun automobile, "FAW Theme Pavilion" has become a unique part of Changchun Automobile Expo, fully demonstrating the strength and cultural accumulation of national automobile brands.

    On July 16th, witnessed by the wonderful prologue of the Automobile Expo, Jilin Automobile Consumption Festival, Qihui China FAW Car Purchase Festival, and the 20th Changchun International Automobile Expo and Automobile Cultural Life Festival started simultaneously. At the opening ceremony, leaders of china automobile dealers association, Jilin Province, Changchun City and China FAW attended together, and Wang Zilian, deputy secretary of Changchun Municipal Committee and mayor, Shen Jinjun, president of china automobile dealers association, and Wang Guoqiang, director and deputy secretary of China FAW, delivered speeches on the spot.

    Launching ceremony of Jilin Automobile Consumption Festival, Qihui China FAW Car Festival, 20th Changchun International Automobile Expo and Automobile Cultural Life Festival.

   The luxury lineup of Auto Expo is duty-bound to boost consumption of FAW.

    As one of the pillar industries in China, automobile plays an extremely important role in the high-quality development of the national economy. Boosting automobile consumption is also regarded as an important direction. As the host city of Auto Expo, Wang Zilian, deputy secretary of Changchun Municipal Committee and mayor, expressed his welcome to guests from all walks of life in his speech, and also affirmed the achievements of Auto Expo and Hongqi brand.

    Speech by Wang Zilian, Deputy Secretary of Changchun Municipal Committee and Mayor

    After 23 years, Changchun Auto Expo has changed from a local auto show to a domestic first-class auto professional exhibition with international influence. It has become a beautiful business card of Changchun "Automobile City", an opportunity to promote the upgrading of automobile consumption, a feast of automobile culture and a window for industry exchanges and cooperation.

    This year, China FAW still maintains a high degree of enthusiasm for participating in the exhibition, taking Hall 9 as the brand exhibition hall of China FAW, and focusing on the development achievements of FAW as the leader of the national automobile industry and the unique brand charm of China automobile culture through all the brand models of FAW Group.

   Hongqi booth of Changchun Auto Expo

    Among them, Hongqi brand exhibited a total of 12 products including Hongqi H6, brand-new Hongqi H5, new Hongqi HS3, Hongqi HS7, new Hongqi HS5, Hongqi HQ9, Hongqi H9, Hongqi E-QM5, Hongqi E-HS9 and Hongqi LS7, and enhanced the high-end brand image of Hongqi with high-quality exhibition design, helping to increase sales through various activities. Boost the enthusiasm of automobile consumption and enlarge the consumption activity of automobile consumption market.

   Brand new red flag H5

   Hongqi E-QM5 and Hongqi E-HS9

    Changchun is the cradle of automobile industry in New China, and automobile has always been the pillar industry and lifeline of urban economic development. As a pioneer in China’s automobile industry, China FAW not only shows its solid industrial foundation, scientific research advantages and heavy automobile culture, but also brings more development opportunities to Changchun, and shoulders the responsibility and mission of boosting automobile consumption and building a powerful automobile country.

   Qihui Jilin hand in hand, Pratt & Whitney user China FAW in action.

    As a central enterprise rooted in Jilin Province, China FAW has always carried out its initial mission with practical actions. Over the past 70 years, China FAW has been working hard to fulfill its initial mission of serving the country and becoming an industrial power, shouldering the responsibility of being the "eldest son" of China’s automobile industry and contributing to the high-quality development of China’s automobile industry in the new era.

    Wang Guoqiang, director and deputy secretary of the Party Committee of China FAW, said in his speech: "FAW is duty-bound to develop Jilin. In order to actively respond to the requirements of the Notice on Organizing Automobile Consumption Promotion Activities, China FAW will officially launch the "Celebrating the 70th Anniversary of the Founding of China FAW in Jilin and Giving Back to Users to Buy Cars Festival" today. This is an important measure to further implement the responsibility and further promote the development of automobile and automobile culture consumption market in Jilin Province, and it is also a true feeling that China FAW gives back to all walks of life, consumers and hometown elders. "

   Speech by Wang Guoqiang, Director of China FAW and Deputy Secretary of the Party Committee

    From July 1st to July 31st, all automobile sales enterprises authorized by various brands of China FAW in Jilin Province can participate in the "Qihui Jilin China FAW Car Festival" if they buy cars with a price of 50,000 yuan or more (excluding operating vehicles and used cars). Subsidies include China FAW’s Hongqi, Jiefang, Pentium, FAW-Volkswagen, FAW Audi, FAW Toyota, FAW Jetta and other brands of passenger cars and light trucks.

   Qihui Jilin China FAW Car Festival Preferential Policies

    China FAW came from this fertile soil of Changchun, marked almost the whole development course of the new China automobile industry, and set up the world’s first impression of China automobile. After 70 years, China FAW has made unremitting efforts and condensed into the power source of China automobile industry.

    Don’t forget the blue rays when you come, and March forward regardless of the wind and rain. On the journey from a big automobile country to a strong automobile country, China FAW unswervingly promotes high-quality development, gives back to users with excellent products, and contributes to the construction of a strong automobile country.

After basically completing the tasks of connecting "people" (social) and "content" (social media), WeChat has focused on connecting "products" (applets). Although the current mainstream product form is still App, the growth rate of WeChat applets is very eye-catching. According to QuestMobile’s report, from January 2017 to March 2018, the monthly activity scale of WeChat applets exceeded 400 million. Last month, the daily users of applets reached about 140 million, with a penetration rate of 43.9%. There is still a lot of room for improvement.

Then, among the three BAT companies, why only the WeChat applet has strong user traffic and ecological scene capabilities? In the WeChat ecosystem, how can small programs survive?

What is the difference between BAT applets?

In essence, applets are based on Super App, which constantly incubates countless sub-apps, making Super App a new mobile Internet infrastructure. When various needs are met by different applets, it is easy to grow an ecosystem similar to Apple App Store.

1. Ali applet bets on "new retail" and expands offline scenes.

Ma Yun once commented on WeChat. When he first came out, he was "shocked" and later felt "nothing more". In recent years, the impact of WeChat payment on Alipay in the fragmented payment scenario is obvious; Wechat applet is playing a big game of chess. Only a Pinduoduo hatched from the applet has become another trump card for Tencent’s strategic impact on Taobao’s e-commerce monopoly.

The incubation bases for Ali’s small programs are Alipay and Taobao. Alipay’s small programs are more tools for convenience, and they belong to the nature of "running out". A remarkable change in Taobao this year is that it is no longer a pure e-commerce platform, but a new online retail base. At present, O2O services such as "Taobao Takeaway" and "Flying Pig Travel" have been integrated in Taobao. The "Member Code" next to Taobao search box is actually a local life service business that diverts water to offline stores near users.

In the Taobao platform mode, in order to realize complex and non-standard service scenes, it is necessary to adopt the "applet" product form without downloading the installation package to better realize the closed loop of traffic. Because Taobao itself is the diversion base of Ali products, it has a strong technical accumulation for light applications and the product experience is not bad. However, Ali’s small program can only get through the e-commerce scene on the small program, but there is no way to enrich other formats. The profit model of Ali’s e-commerce determines that merchants still need to buy their own advertisements to buy platform traffic or rebates.

The number of local life services on Taobao homepage has increased, and the membership code is actually a store applet. At present, Alipay uses a relatively high-frequency bike-sharing applet.

2. The way out for Baidu applets is to advertise information flow.

The strength of Baidu’s link information is to link official website or webmaster. This advantage has been weakened by WeChat official account and the media in the WeChat ecosystem. Next, the trend for enterprises to do official website may be to make a small program (the cost of developing an App is relatively high). After all, in the past, there were 400 million users on the PC side, and every enterprise had official website, which is about the same as the current WeChat applet users. Therefore, it is really a bit late for Baidu to stop pushing applets.

The previous light Application didn’t work because Baidu didn’t have a fist-level app belt on the mobile side.In the past two years, the transformation of Baidu’s mobile terminal has been completed. In 2017, Baidu’s information flow advertising business developed at a growth rate of 20% from the previous month, keeping pace with the big search business. It is a cash flow business that Baidu has long invested in AI technology research and development. Later, in the information flow of Baidu mobile terminal, it is expected to access some small program sites with good experience, and the home page will be presented when the user pushes (recommends), without jumping to the customer’s App, and the experience is much better than the H5-style advertising landing page.

The author found that the "Youxin Used Car" applet was launched in the "Common Services" of Baidu App on April 12, and it has not been involved in the homepage.

The shortcoming of Baidu applet is that its mobile payment market share is small, and there is no way to completely open up payment scenarios in its own ecosystem; And perhaps only small program businesses that cooperate with Baidu can get the recommendation of "brand zone" and the traffic recommendation of home page, which will restrict the interest of many enterprise developers to enter.

　 　 　 Baidu applet is currently only used as a common service, and Youxin used car is used as a model to experience App, and there is no payment function for the time being.

How does the long tail applet survive in the "decentralized product ecology" of WeChat?

Many entrepreneurs and enterprises have been keenly aware that WeChat applet is replicating the logic of WeChat official account’s success. Few of the more than 20 million WeChat official account can really survive, and the pain points of small program operators are also closely related to the "decentralized product ecology" positioned by WeChat:

The most important thing about WeChat applet service platform is not technology. The underlying technology of WeChat has been simplified. The real barrier is the accumulation of operational experience in different vertical industries, which is difficult for service providers who only do a few applet cases to cope with.The bonus of the applet is in front of us, but it is still a minority who can really play and catch it. The trial and error cost of this bonus window of about two years is high, which makes the applet service platform prone to "head-oriented" Matthew benefits.

Providing applet application services is a technical activity. For example, the logic of applet products in different industries, such as micro-e-commerce, smart restaurants, smart takeout, smart beauty industry, is definitely different, and the interaction of transactions in different scenarios, official website, stores or conference applets is also different.　

Although applets need more than 50 traffic portals, to solve the problem of difficult popularization of applets, we have to rely on the combination of "WeChat official account+Applet". WeChat official account fans have a high retention rate, but the entrance is deep, the opening rate is low, and there are many small programs with high frequency. If the users of small and medium-sized enterprises with long tail can give full play to the advantages of WeChat official account stock and small program increment, they can save a lot of promotion costs and enrich the promotion of small programs.

Zhang Xiaolong said that applets are not for e-commerce. It means that applets can be widely used in many application scenarios such as content, social interaction, stores, tools, etc. Perhaps content e-commerce, social e-commerce, fan marketing and local lifestyle services can be truly detonated through applets.

Author’s information: Reliable A Xing (Li Xing), WeChat official account: Reliable A Xing, founder of Reliable Hui, columnist of science and technology media, and personal WeChat is QQ number: 1598145405.

　　A recent study published in Cancer magazine found that there is an important correlation between socio-economic status and cancer types. Rich and poor people are prone to different types of cancer.

　　For those who are frightened by the news such as "Julie cuts twice every three years" and "Liver cancer can be inherited", please note that this discovery shows that cancer is the result of the interaction between genetic factors and environmental factors in a long process, just like an egg can’t become a chicken without proper temperature, it is mainly environmental factors. Even if you are related to cancer patients, as long as you pay attention to prevention, it is still possible to shut cancer out!

　　Interview expert: Professor Qin Shukui, vice president of Bayi Hospital and director of the Cancer Center of the whole army.

　　1 Carcinogenic environment leads to the distinction between "rich cancer" and "poor cancer"

　　A recent study published in Cancer magazine found that cancer can be divided into "rich cancer" and "poor cancer".

　　In this study, researchers followed up 3 million cancer cases diagnosed in the United States from 2005 to 2009, covering 42% of the population in the United States and covering the richest and poorest communities in the United States.

　　The results show that there is an important correlation between socio-economic status and cancer types. Richer people are more likely to suffer from melanoma, thyroid cancer, skin cancer and testicular cancer; The poorer people are more likely to suffer from Kaposi sarcoma, laryngeal cancer, cervical cancer, penile cancer and liver cancer.

　　Why is this so?

　　The reason is that the causes of cancer (environment and living habits) are different, and eventually different types of cancer will be produced.

　　Cancer is the result of the interaction of heredity and environment.

　　Case: There is a family. The eldest son was admitted to the university and went to other places, and then he stayed to work in other places, while the youngest son stayed with his mother all the time. Later, the mother died of cancer, and then, the youngest son died of cancer.

　　This case shows that there are genetic defects in cancer families, but "common living environment and way" may play an important role.

　　Case: Ms. Leah in Britain divorced her husband because of rectal cancer. She believes that her husband likes red meat, drinks and spicy food, and has a bad temper, insists on smoking and is getting obese year by year. This lifestyle will affect her and her children, and she wants to get rid of this living environment.

　　There is an article in the British Medical Journal detailing "marital diseases", saying that if one of the spouses is sick, the prevalence rate of the other will increase a lot, from cancer, diabetes, hypertension to ischemic heart disease. The reason is that people who live together for a long time have many diseases at the same time because of the same eating habits and similar lifestyles.

　　Modern genetics shows that cancer depends not only on genetic factors, but also on "being affected by acquired carcinogens and cancer promoters". Breast cancer, lung cancer, liver cancer, esophageal cancer, cervical cancer and colorectal cancer are greatly influenced by bad living habits and environmental factors.

　　China also has "poor cancer" and "rich cancer"

　　Case: The 31-year-old "True Water Without Fragrance" (net name) has been feeling intense nausea for more than a month. She usually pays great attention to maintaining her health. She eats miscellaneous grains for breakfast every day, drinks tea and doesn’t touch alcohol and tobacco. She has regular physical examination every year and has never had any major problems. This time, she thought vomiting was a sign of pregnancy, but after a check, the result was: advanced rectal cancer!

　　"True water has no fragrance" slowly pieced together the clues of his illness: although he sometimes eats miscellaneous grains, he eats a lot of meat, and he rarely exercises. He is 155 cm tall but 128 kg fat. At this time, her mother told her that her grandmother died of esophageal cancer, her grandfather died of lung cancer, and an uncle also had rectal cancer!

　　Her grandmother’s esophageal cancer belongs to "poor cancer" and her rectal cancer belongs to "rich cancer".

　　What are the poor and rich cancers in China?

　　"Poor cancer" also includes liver cancer, stomach cancer, esophageal cancer and cervical cancer. "Cancer-rich" also includes lung cancer, colorectal cancer, breast cancer, lymphoma and prostate cancer.

　　4 "poor cancer" is related to long-term chronic infection.

　　Why do liver cancer, gastric cancer, esophageal cancer and cervical cancer belong to "poor cancer"?

　　A study in the Annals of Oncology shows that some cancers can be caused by long-term chronic infection. In China, hepatitis B virus, Helicobacter pylori, human papillomavirus (HPV) and EB virus are the most common infectious and carcinogenic factors.

　　Infected with hepatitis B virus, it further evolves into cirrhosis through acute and chronic inflammation, and a small number of patients can eventually lead to liver cancer.

　　Helicobacter pylori is the most common infectious bacteria, which may cause gastritis and peptic ulcer, and long-term infection may promote gastric cancer.

　　The bane of cervical cancer and its precancerous lesions has been proved to be human papillomavirus infection.

　　The high incidence of nasopharyngeal carcinoma is closely related to EB virus infection.

　　Generally speaking, these cancers related to long-term chronic infection mostly occur in economically underdeveloped areas, where the natural environment is often bad, the nutritional conditions are poor, the hygiene level is low, and the living habits are not good. Therefore, these cancers are easy to develop.

　　5 "cancer-rich" is related to modern lifestyle.

　　Why are lung cancer, colorectal cancer, breast cancer, lymphoma and prostate cancer called "rich cancers"?

　　Rectal cancer with "true water without fragrance" is regarded as a typical "cancer-rich". In terms of pathogenesis, colorectal cancer is influenced by related genes, such as diabetes, hypertension and coronary heart disease. Lifestyle, perennial high-fat diet, lack of dietary fiber intake, sedentary inactivity, untimely defecation or habitual constipation are all common causes.

　　Why excessive intake of high-fat food is one of the carcinogenic factors?

　　A new study found that a high-fat diet can change the intestinal microecology (that is, microbial composition)-some bacteria increase, while others decrease. As a result, the immune defense against intestinal cancer is reduced, and the incidence of cancer is increased.

　　Why sedentary, more susceptible to cancer?

　　The immune function in human body is enhanced with the increase of activity, and sedentary can make the human body lack enough immune cells.

　　An epidemiologist in Canada found that in the United States, 49,000 cases of breast cancer and 43,000 cases of colon cancer are associated with inactivity every year, and breast cancer and colon cancer seem to be two cancers closely related to exercise.

　　Blocking infection can effectively prevent "poor cancer"

　　6 How to prevent "poor cancer"?

　　There is no direct causal relationship between infection and cancer, and it will not be "killed in one blow". Viruses and germs lurk quietly in our bodies, waiting for an opportunity to attack. This process takes about 10 years or more. If we can stop their spread and eliminate them in the cradle, we can effectively prevent the occurrence of cancer.

　　First, get vaccinated. According to statistics, 95% of infants and children in a certain area were injected with hepatitis B vaccine in 1984. Twenty years later, the number of hepatitis B carriers dropped from 10% to 20% to 0.2%, and the incidence of liver cancer decreased by 70% to 80%.

　　Second, early treatment. Helicobacter pylori can be completely eradicated by antibiotic combined therapy, which can not only relieve gastritis and gastric ulcer, but also play a good role in resisting the further development of gastric cancer.

　　Third, do screening. Women over the age of 30 must have regular cervical screening. At the same time, protect yourself, pay attention to using condoms, don’t have sex too early and limit the number of partners.

　　Finally, the dining system. Helicobacter pylori and other germs are highly contagious, and can be transmitted through hands, food and tableware. It is also best to implement a separate meal system in family life.

　　Healthy lifestyle can prevent "cancer-rich"

　　7 How to prevent "cancer-rich"?

　　"Cancer-rich", such as colorectal cancer, breast cancer and lymphoma, has no unique and significant inducement, and some people think it is difficult to prevent it.

　　However, this kind of rich disease also has some common causes-eating too much, eating a high-fat and high-protein diet, and lack of exercise.

　　Therefore, the way to prevent it is to establish a healthy lifestyle. Compared with the "poor cancer" caused by chronic infection, it is more difficult to do and requires greater determination and perseverance! (Li Lanling)

　　If you want to defeat the virus, you must understand the virus.

　　As a living body in the micro-world, virus must be supported by science and technology to see through the source of its disease and the principle of its poison and to crack its evolution and transmission mechanism.

The picture shows the virus picture for the Military Medical Research Institute.

　　They are very old — —

　　Appearing in the early days of the origin of life, it is the oldest and most primitive "indigenous people" on the earth.

　　They are tiny — —

　　The biggest virus is only one tenth of the diameter of a hair.

　　They are simple — —

　　It is basically a "genetic material (DNA or RNA)+ protein capsid" model.

The picture shows the personnel of the military medical expert group in the front line of Wuhan’s anti-epidemic. The picture is provided by the Military Medical Research Institute.

　　They are "fragile" — —

　　Can’t live independently, you need to find an ideal host to complete the reproduction and evolution. Once you leave the host, only death awaits them.

　　They are huge — —

　　There are more than 10 bacteriophages (viruses infected with bacteria) in the world’s waters alone. If they are lined up, the total length will reach 200 million light years.

　　They are everywhere — —

　　There are viruses everywhere on the earth where there is life.

　　From sea to land, from plants to animals, from bacteria to fungi … … Even in the human genome, there are virus genome sequences.

　　What causes it is still a mystery.

The picture shows the researchers of Wuhan anti-epidemic frontline processing the samples to be solved. Photo courtesy of Military Medical Research Institute.

　　Fortunately, most viruses are harmless to human beings.

　　So far, only 14 virulent viruses have been found to seriously threaten human life and health, such as smallpox, influenza, hepatitis, AIDS, SARS, Ebola and so on.

　　Usually,The virus only proliferates and spreads in certain kinds of hosts.It is difficult to "move" from one host to another.

　　butWhen some virus mutations accumulate to a certain extentAfter that, it can successfully cross the interspecific barrier of the host, proliferate and spread continuously in the new host, causing the disease and death of the new host, which may lead to an epidemic.

　　The picture shows that the first-line researchers in Wuhan are receiving samples from the Military Medical Research Institute.

　　Looking at the current epidemic situation, emerging infectious diseases have always affected the global nerves.

　　Establishing and perfecting the public health system is the defense strategy for human beings to prevent and control epidemics. Starting from the construction of ecological civilization, it is the fundamental way to achieve coordinated development and harmonious coexistence between man and nature.

　　China News Service, May 6, Lynk & Co’s CMA basic module architecture Ultimate Force Lynk & Co 05 was officially launched on the 5th, with a total of five configuration models priced at 17.58 – 212,800 yuan. In order to thank users for their support and trust in Lynk & Co 05, Lynk & Co Auto provides the following benefits for the first 10,000 Lynk & Co 05 owners: time limited edition owners enjoy benefits worth 4,000 yuan; Jin Halo/Yao Halo owners enjoy 4,000 yuan; Jin Plus/Yao Plus owners enjoy 4,000 yuan. At the same time, Lynk & Co firmly continues to build a warm user brand. The first owner of Lynk & Co 05 enjoys the "three exemptions" policy of Lynk & Co’s lifetime free quality assurance, lifetime free road assistance, and lifetime free data traffic. Financial benefits can enjoy up to 36 periods of interest-free.

　　Extremely capable premiere, rim’s first "movie-style" new car launch conference

　　Adhering to the Lynk & Co brand’s code of conduct of "challenging all conventions", the Lynk & Co 05 launch conference adopts the form of a "big movie" to bring users a refreshing sensory feast, which is the epitome of Lynk & Co’s continuous self-innovation. An Conghui, President of Geely Holding Group, CEO and President of Geely Automobile Group, Peter Horbury, Senior Vice President of Geely Group Design, Alain Visser, Senior Vice President of Lynk & Co Automotive, and Kent Bovellan, Head of the Vehicle Architecture Center, specially starred in the play. During the live broadcast, users watched the premiere of "Lynk & Co 05", followed the ups and downs of the high-energy plot, thrilling special effects, and jointly explored the extremely normal spirit of HALO MAN, experiencing the extraordinary product strength of Lynk & Co 05.

　　At the press conference, An Conghui, president and CEO of Geely Holding Group and Geely Automobile Group, said: "The integration of Chinese and Western technology and experience has stimulated the deep potential of the CMA basic module architecture. The Lynk & Co 05 has excellent performance control and leading strength in technology and intelligent connection. It also redefines the new height of global high-end vehicles from safety, driving control, design, intelligent connection, quality and environmental protection. The Lynk & Co 05 is not only the latest achievement of China-EU cooperation, but also the ultimate model for urban youth based on multi-dimensional driving experience, rich usage scenarios and multiple social roles in the context of globalization."

　　Advancement and breakthrough, the ultimate interpretation of urban opposition aesthetics

　　As the ultimate interpretation of urban oppositional aesthetics, Lynk & Co 05 has realized the advancement and breakthrough of the brand design language. The urban warp and latitude front grille shape, with the Arctic light daytime running lights, has a rich sense of three-dimensional design. The roof line slopes down at a golden angle after passing through the B-pillar, creating a slippery back curve with a great sense of speed and comfort in space. The length, width and height of the Lynk & Co 05 body are 4592mm/1879mm/1628mm, and the wheelbase has reached an excellent 2734mm in the same class. The unique Aurora wing tail column trim of the body has a strong visual impact, and the energy matrix tail light further enhances the unique product image. The electric trunk adopts the unique touch opening of the same level, and the trunk opening sensing area perfectly integrates the design and practical functions.

　　In terms of interior, Lynk & Co 05 adopts a new design language to build an urban sensory cockpit centered on the driver. The through-type air conditioner has a rich sense of trend layering, and is characterized by the straight lines of urban architectural style. The cockpit presents a stronger sense of modernity and power. The center console is tilted towards the driver, effectively reducing the driver’s visual pressure and increasing the horizontal visual width in the car. The use of high-end materials such as 30 imported real aluminum veneers tailored by complex craftsmanship, North American first-layer NAPPA leather, and NUBUCK suede leather gives the driver a luxurious enjoyment of vision and touch. At the same time, Lynk & Co 05’s unique stepless streamer ambient lights are all over 20 places in the car, which can adjust more than 16 million colors, and support diversified light effect linkage to create a distinctive light luxury atmosphere.

　　Software and hardware collaboration to enjoy a multi-dimensional experience in the age of technology

　　Adhering to the concept of "high-tech" product development, in terms of Zhilian Technology, which is particularly concerned by users, Lynk & Co 05 brings users a multi-dimensional new experience in the era of smart technology with its strong software development strength and top hardware. The Lynk & Co 05 series comes standard with dual 12 + inch all-LCD meters and a central control display screen. The 12.3-inch all-LCD smart meter supports full coverage of navigation maps, and the 12.7-inch central touch screen has a clarity of up to 1920 * 1080P. It adopts Corning Gorilla Glass to feel flexible and delicate, showing the luxurious atmosphere of technology. In order to meet the advanced needs of the younger generation for in-vehicle intelligent configuration, the Lynk & Co 05 Halo version is equipped with a 7.5-inch full-color HUD head-up display, which can display driving-related information such as vehicle speed, navigation, ADAS, and vehicle safety warnings in real time, improving driving quality and safety.

　　In today’s Internet of Everything, the Qualcomm Snapdragon 820A on-board chip born in the automotive ecosystem brings strong performance support to the new generation of smart car system of Lynk & Co 05. At the same time, 05 Innovation is equipped with CSD fingerprint recognition technology, which can enjoy exclusive preferences for one click login account. The new generation of smart cars is compatible with rich multi-scene APP applications, which fully meets the diverse and personalized needs of users. Innovatively create car-home interconnection functions, connecting cars and smart home appliances to achieve unbounded interconnection. At the same time, Lynk & Co is one of the few brands in the world that solves and provides car sharing technology. You can share Lynk & Co 05 with your family and friends in your spare time. More functions at your fingertips make the Lynk & Co 05 cockpit a full extension of daily space.

　　Refresh the new value, standard 2.0TD high power + 8AT dynamic total combination

　　In terms of power, the Lynk & Co 05 series comes standard with a 2.0TD high-power turbocharged engine of Drive-E series, with a maximum power output of 187kW at 5500rpm and a peak torque output of 350N · m at 1800-4800rpm. With a low-inertia turbocharger, it can output 90% of the peak torque in as little as 2 seconds, satisfying the smooth driving experience of power at will. With the chassis "exquisite sports" style adjustment, the Lynk & Co 05 has a 6.7-second 100-kilometer acceleration performance, a 35-meter sports car-level 100-kilometer braking performance, and a maximum speed of 230km/h.

　　The Lynk & Co 05 is equipped with an Aisin 8-speed automatic transmission, which is efficiently matched with the engine, and the force is at will. In the economical and comfortable driving mode, the gearbox shifts smoothly and takes into account good economy, and the sports mode downshifts the positive dynamic response quickly, which can bring full driving fun to the user. At the same time, the Lynk & Co 05 Jin style model has the industry’s leading four-wheel drive response speed and excellent dynamic performance under the support of the fifth-generation BorgWarner intelligent four-wheel drive system. When the front wheel skids are detected, the four-wheel drive system quickly and automatically distributes the torque to the rear axle, with a maximum distribution ratio of 50:50, providing higher handling limits and escape capabilities in complex road conditions.

　　Global security concept "extremely able to protect" car safety

　　Empowered by the CMA basic module architecture, Lynk & Co 05 continues Volvo’s safety genes and advanced safety concepts, safeguarding vehicle safety in an all-round way from five dimensions: active safety, passive safety, pedestrian safety, environmental safety, and property safety. The 05 body is densely covered with 20 external sensors, which anticipate possible dangers and avoid them in time in scenarios such as driving, lane change, collision dodge, and parking access, effectively reducing driving load and providing a safer travel experience.

　　Lynk & Co 05 is equipped with up to 21 ADAS intelligent driving assistance, with L2 + level full-scene driving control strength, giving drivers all-round protection. ACCQA’s adaptive cruise with queuing function can intelligently anticipate existing dangers and avoid them in time; Lynk & Co’s first HWA high-speed cruise assistance and TJA traffic congestion assistance system can realize assisted driving at full speed and effectively reduce driving load; ELKA emergency lane keeping can accurately identify lane boundaries and improve driving safety when changing lanes; DOW door opening warning function prompts personnel to avoid collisions with pedestrians or incoming vehicles behind when opening the door, providing careful protection for other traffic participants.

　　At the same time, Lynk & Co 05 is equipped with FCW forward collision warning system, AEB active emergency braking with pedestrian identification. BSD blind spot monitoring, CVW vehicle rapid approach warning, AHB-C intelligent far and near light control system, TSR traffic sign recognition and other leapfrog safety configurations provide all-round three-dimensional travel safety protection for car owners.

　　In terms of passive safety, the Lynk & Co 05 body structure follows the global five-star safety development standard. The use rate of high-strength steel in the whole car reaches 78.4% to ensure the high strength of the body. Advanced production processes such as laser fusion welding and laser flight welding are adopted to ensure the strong and stable connection of the body structure. The top pressure test can withstand more than 5 times the weight of the body, effectively protecting the safety of drivers and passengers in the car.

　　In order to meet users’ continued concern for healthy travel, Lynk & Co 05 is equipped with a number of environmental technologies to provide safety protection for personnel in the car, and has been awarded the "Aerosol Filtration Protection" certification of TüV Rheinland and the "Vehicle-level CN95 Air Filter" certification of China Automotive Research Huacheng Center.

Time Network News, directed by Huang Mingsheng and starring Ren Xianqi, Ren Dahua, Fang Zhongxin, Tan Yaowen, and Wu Zhuoxi, the crime Hong Kong film "Edge Walker" officially landed in major theaters across the country today, and the public poster was also exposed.

Marginal Walker

No rating yet

113 Minutes – Crime/Action will be released on April 15, 2022

"Marginal Walker" sets the background of the story in Xiangjiang on the eve of its return in 1997. At that time, the situation was chaotic, and disputes between multiple forces continued. At present, Lin Yaochang (Ren Dahua, played), a gang talker, entrusted an important task to his crony A Luo (Ren Xianqi, played). A Luo with multiple identities wandered between black and white under the chaotic situation of the rivers and lakes. Brothers with different camp positions chose to stick to love and righteousness in the face of the fetters of human nature.

The film brings together Ren Xianqi, Ren Dahua, Fang Zhongxin, Tan Yaowen, Wu Zhuoxi, Hong Jinbao, Chen Guokun, Lin Xiaofeng, Zhang Zhaohui, Zeng Jiang and other golden lineups, which can be said to be a collective gift from the old boys of Hong Kong films.

　　Beijing, May 10 (Reporter Liu Fei) According to the Voice of China "News Vertical and Horizontal" report, recently, some drivers registered with Didi Chuxing in Shenzhen received a text message: "Hello master, because you violated the service red line, you have been released from cooperation by the system." It is understood that more than 8,000 drivers have been "banned" this time and need to re-examine the information. So why does Didi want to "ban"?

　　In the case of the female passenger killed in Shenzhen, the suspect used her real ID card, driver’s license and license plate Guangdong B6S8N3 to register and pass the review on the Hitch platform, but the forged license plate of the vehicle involved was Guangdong C2S8N3. At that time, in the system, the driver’s license plate would generally conceal part of the number, leaving only the word "Guangdong" and the last three numbers or letters. That is to say, in this case, the murdered female passenger could not find that the license plate did not match.

　　From May 4th, the number hiding function will be cancelled, and all cars that passengers hit on the Didi platform will display their full license plate numbers.

　　Recently, in Shenzhen, where the incident occurred, some Didi Express owners reported receiving SMS notifications of temporary bans and were asked to verify their identities and relevant documents of the vehicles. It is understood that about 8,000 owners are involved.

　　The owner said that the ID card, driving license, and driver’s license should be re-inspected.

　　Li Mei, a senior public relations manager at Didi’s public relations department, said in an interview with the media that the platform is regularly rectified. He said that this message was sent by them. Every once in a while, they will remind and rectify drivers with abnormal driver’s license or vehicle information on the platform, or with poor service quality on the platform.

　　Didi said that this time is not a ban, because the driver can withdraw cash normally. If the driver who receives this text message has any objection, he can bring the driving book and driving book, drive the registered vehicle to the Didi Owners Club to re-review the information, and can continue to serve on the platform.

　　Recently, the safety issue of online car-hailing has once again attracted public attention. A female passenger in Guangzhou reported that she used "Didi Chuxing" to call a taxi, but in the end, it was a private car. Later, because the fare was not negotiated, she was threatened by the private car driver.

　　Didi said that at present, the account involved has been banned, and an investigation is under way. It is initially confirmed that the taxi driver took the order and transferred it to the private car driver privately. So, how can this situation be avoided? How can the privacy of passengers be guaranteed?

　　Miss Li, a passenger in Guangzhou, reported that on the evening of May 3, she called a taxi through the Didi Chuxing platform and received a contact number from the driver. Unexpectedly, the driver negotiated with her and said the fare was 20 yuan.

　　"I called a taxi, but it was a private car, and the license plate number did not match. When Didi took the order, he called me and told me the price, not the meter. At that time, because the place was not very safe, before I got on the bus, there were several vans around to pull me into the car, so I wanted to hurry up," Miss Li said.

　　The taxi platform shows that the license plate of the taxi that received Miss Li’s order is Guangdong B with the tail number × × × 91, but the picture provided by the passenger shows that the license plate number of the car that actually came to receive the order is Guangdong S K × × 36.

　　Miss Li dodged the black car by her side, but finally got into the private car that blocked the work. After arriving at the destination, the owner raised the fare to 60 yuan, and at this time, Miss Li found that the order on the software had been "completed".

　　Miss Li introduced: "He said it couldn’t be that much. He wanted 60 yuan for life and death, so he took out tools and wanted to hit someone. He said he wanted to call someone, and we also said you called someone and I called someone. My dad called. He got in the car, turned around and hit us. There were calls to the police. There were threats of text messages, he said he told their boss that he wanted two fingers from my dad."

　　Why did the order come from a taxi, but a private car? In response to this matter, Didi’s latest response said that it was initially confirmed that the order was privately transferred to the private car driver after the taxi driver took the order. This is a behavior prohibited by the platform, and the relevant account has been permanently banned and the cooperation with the driver has been cancelled.

　　Ye Yun, the head of public relations for Didi Kuaidi, said that after receiving a complaint, the account was frozen. He said that if the account is frozen first, the account can no longer take orders. For example, due to disputes with passengers during the service, or passengers complaining that the car does not match the person and car, many situations may temporarily freeze or give drivers a final ban.

　　Regarding the discrepancy between the cars, Ye Yun said that once passengers encounter this situation, they must not get on the bus, and it is best to complain immediately. He pointed out that as long as the car comes and the license plate number displayed online is different, we urge passengers not to get on the bus. And they must complain in our software or customer service as soon as possible. Because frankly, if the car does not come, but the passenger gets on the bus and does not complain, it is really difficult for the platform to know, because a lot of things happen offline.

　　Regarding the threatening behavior complained by passengers, Didi said it recommended that both parties call the police as soon as possible.

　　However, the reporter noticed that according to the passenger, Miss Li, before she got on the bus, the private owner already knew her mobile phone number and took the initiative to contact her. After the dispute, he also sent text messages through his mobile phone that the passenger considered threatening.

　　That is to say, the driver can know the passenger’s mobile phone number registered on the platform. So, if the mobile phone numbers of the passenger and the driver are hidden and only dialed through the platform, but not all mobile phone numbers of both parties are displayed, can this reduce the occurrence of harassment, abuse or threats to a certain extent?

　　Ye Yun said that the number privacy protection function is being tested in some areas. This function of number privacy protection is already OK in the research and development stage. At present, an online trial is done in Tianjin. So, in a large-scale, possibly tens of millions of orders a day, there may still be some areas to improve in system adaptability, user experience and user education. So there is no national push yet. But we will improve it as soon as possible.

　　From a legal point of view, it is difficult to hold the platform accountable for legal disputes between passengers and drivers on the online ride-hailing platform. The platform is only the publisher of the information, and there is no labor relationship or labor relationship between the driver and the driver. The law does not stipulate that the platform is responsible for the problems caused by the driver in the process of receiving orders. But there are exceptions, that is, the drivers hired by the platform itself.

　　Since the relevant online car-hailing management regulations are still blank, the current access conditions for online car-hailing drivers are still stipulated by the platform itself. Therefore, all platforms are required to learn from this, block security bugs, and let passengers travel with confidence.

The 5th International Auto Show in Handan in 2024, spanning the Millennium, meets again at this moment.

From April 4th to 7th, 2024, we met again at Yongnian Fastener Expo Center.

A grand event of automobile culture spanning a thousand years, a price competition among a hundred schools of thought. In 2024, during the Qingming small holiday, the Fifth International Auto Show in Handan will be attended by mainstream automobile brands at home and abroad, with an exhibition area of nearly 30,000 square meters, 100 exhibitors and thousands of new cars. At the previous Handan International Auto Show, all kinds of newly released and listed models and top luxury cars appeared together. According to industry insiders, even if you don’t buy a car for the time being, just take a look, you can compare all the cars you are interested in in in the shortest time to prepare for the next car purchase. "This is what Handan International Auto Show really makes people feel the charm of one-stop car purchase and car appreciation."

Not only that, there will be various performances, interactive activities and various gifts waiting for you. Considering that it is inconvenient for you to travel because of the long distance, we also have a free shuttle bus in your area. The location of the bus is as follows:

Bus parking place: Melody City, New Century Center, Fuxing Trade City.

Bus parking time: April 4-6 at 8: 30 am and 2: 00 pm.

Bus return time: April 4-6 at 11: 00 am and 4: 30 pm.

Take the free car ferry to collect gifts: a bag of rice and a bucket of laundry detergent.

Scan code and group registration for free car ferry.

　　Xinhua News Agency, Guiyang, July 3 rd Title: Revealing the world’s largest "pot cover": 4,450 reflection units spell out the world’s largest and strongest "Eye of the Sky"

　　Xinhua news agency reporter

　　Remember what the "pot cover antenna" looks like?

　　On July 3, 2016, the world’s largest "pot cover" with a diameter of 500 meters was erected in Guizhou karst tiankeng.

　　It is the 500-meter spherical radio telescope, the largest and most powerful single-aperture radio telescope in the world.

　　It is called "Eye of the Sky", which is used to listen to the sounds in the depths of the universe and observe the mysteries of the universe.

　　Start with Xue Huadian on old TV.

　　When the old TV can’t receive the signal, the screen is not blank, but Xue Huadian is flashing. In fact, these Xue Huadian are electromagnetic wave signals, including radio emission from space.

　　In 1933, scientists in bell laboratory accidentally discovered the stable radio emission from the center of the Milky Way with a highly sensitive receiver, which opened the door to radio astronomy.

　　Anyone who has used the "lid antenna" knows that the larger the lid aperture, the clearer the TV picture. For radio telescopes, the larger the aperture, the farther you can see. Radio astronomers all over the world are pursuing to build a larger-caliber "pot cover" to improve the sensitivity of radio telescopes.

　　Peng bo, a researcher at the National Astronomical Observatory of the Chinese Academy of Sciences and deputy manager of the 500-meter spherical radio telescope project, said that the radio telescope had been short of funds at the beginning of its design and construction, but scientists were unwilling to reduce its caliber no matter what it was reduced.

　　"Space is mixed with all kinds of radiation, and distant signals are like cicadas in thunder, and there is no super-sensitive ‘ Ear ’ I can’t tell it at all. " Nan Rendong, chief scientist and chief engineer of the 500-meter spherical radio telescope project at the National Astronomical Observatory of the Chinese Academy of Sciences, said.

　　Previously, the most sensitive radio telescopes in the world were the 100-meter telescope in Bonn, Germany and the 300-meter telescope in Arecibo, USA. The former can move and "shake its head", while the latter is built with the help of karst potholes on Puerto Rico island.

　　At the 1993 International Radio Union Congress, astronomers from 10 countries, including China, proposed to build a new generation of radio "big telescopes", eager to go back to the original universe and solve many difficult problems in astronomy before the radio wave environment was completely destroyed.

　　"Building the world’s first large-caliber radio telescope is the dream of teacher Nan Rendong and several predecessors, which embodies the ambitious ambition of China astronomers." Peng bo said.

　　At the end of 1995, more than 20 universities and research institutes in the United Nations of Beijing Observatory set up the China Promotion Committee of Radio "Large Telescope", and put forward the karst engineering concept of building a spherical reflector, namely "Arecibo antenna array", by using Guizhou karst depression.

　　Since then, scientists in China have further promoted the concept of karst and proposed to independently develop a new karst unit, namely a 500-meter spherical radio telescope.

　　In order to set up a new generation of radio "big telescopes", scientists have turned over the karst mountain areas in Guizhou through satellite remote sensing. Peng bo recalled that at that time, the Observatory commissioned two institutes to conduct independent search and select from more than 300 candidate potholes. As a result, Dawodang, located in Pingtang County, Qiannan Prefecture, got the highest score twice.

　　The conditions provided by natural karst potholes in Guizhou have always been the most unique and the largest and strongest foundation for China Radio Telescope in the world.

　　Not just a big circle — — What is the strength of China Radio Telescope?

　　Whether you are near a large radio telescope, climbing the observation deck on a nearby hill or watching a virtual reality video, you can intuitively feel its first feature — — Big. Scientists describe it as a "giant eye for watching the sky".

　　Wang Qiming, chief engineer of the 500-meter spherical radio telescope project at the National Astronomical Observatory of Chinese Academy of Sciences, said that more than 10,000 tons of steel were used only for the ring beam, cable net and six towers supporting the feed cabin.

　　"The total reflecting surface of the telescope is 250,000 square meters, which is equivalent to the size of 30 standard football fields. Although the reflective panel is only 1 mm thick, it also uses more than 2,000 tons of aluminum alloy. " Wang Qiming said.

　　However, the large radio telescope is by no means a "stupid" metal pile, it is the most sophisticated astronomical instrument. Due to the adoption of the feed platform with optical, mechanical and electrical integration and the secondary adjustment of the parallel robot in the feed cabin, it can realize millimeter-level pointing tracking without rigid connection between the feed and the reflecting surface, ensuring accurate gathering and monitoring of weak radio signals in the universe.

　　The construction technology of the large radio telescope is also improving. Wang Qiming said that due to strict requirements, this big scientific project has promoted the improvement of equipment manufacturing capabilities in many fields:

　　— — The cable net with active reflection surface has the characteristics of high elasticity, tensile resistance and fatigue resistance, and its ultra-high stress amplitude of 500 MPa is 2.5 times that of the national standard;

　　— — More than 2,000 hydraulic actuators that help the reflector to be displaced can achieve accurate positioning and coordinated movement through expansion and contraction, and can also report their own state information to the control system to meet the movement requirements such as timely tracking and source change.

　　— — Dynamic optical cable, which undertakes the mission of transmitting all kinds of data and information, can withstand repeated bending, winding and torsion and other mechanical properties and harsh natural environment tests.

　　"Our original design concept originated from the Arecibo telescope in the United States. But compared with Arecibo, the active reflector system is our biggest innovation. " Peng bo said that the cable net structure of a large radio telescope can change with the movement of celestial bodies, driving 4,450 reflecting units on the cable net to form a 300-meter instantaneous paraboloid in the direction of radio power supply, which greatly improves the observation efficiency.

　　Arecibo telescope is a fixed telescope, which can only scan a 20-degree strip area in the sky by changing the position of antenna collapse. The active reflector allows the China Radio Telescope to have a wider observation range, covering 40-degree zenith angle.

　　The working frequency of large radio telescopes is relatively wide. Peng bo said that the feed cabin is equipped with a multi-band and multi-beam feed and receiver system covering the frequency of 70 MHz ~ 3 GHz.

　　Zheng Xiaonian, deputy director of the National Astronomical Observatory of the Chinese Academy of Sciences, said that the German Bonn telescope with a diameter of 100 meters was once called "the largest machine on the ground", and the sensitivity of the China Radio Telescope was improved by about 10 times. The 300-meter-caliber Arecibo telescope in the United States has been unsurpassed for more than 50 years. Compared with it, the comprehensive performance of China Radio Telescope has been improved by about 10 times.

　　Take root in the karst sinkhole and look at the deep space of the universe

　　"Like other radio telescopes, the two main scientific goals of the China Radio Telescope are to patrol the neutral hydrogen in the universe and observe pulsars. The former is to study the large-scale physics of the universe to explore the origin and evolution of the universe, and the latter is to study the material structure and physical laws in extreme States." Zheng Xiaonian said.

　　The earth’s atmosphere leaves two windows for human beings to explore the universe, one is optics and the other is radio. For astronomers, if the optical telescope is a microscope, then the radio telescope is a CT machine, which can obtain the ultra-fine structure of celestial bodies.

　　"There are seven sets of receivers, because the frequency of observation in different bands is different, and the observation and research goals are different." Peng bo said that in the eyes of large radio telescopes, the universe and cosmic celestial bodies are a three-dimensional presentation.

　　For more than half a century, the energy collected by all radio telescopes in the world has not turned a page, and the joining of China Radio Telescope will greatly accelerate this speed. And the energy collected means the amount of information to interpret the mysteries in the depths of the universe.

　　"Since the birth of the radio telescope, humans have discovered about 2,500 pulsars. If the working hours of the China Radio Telescope are all used to observe pulsars, it is expected to double this number within one year." Peng bo said that pulsars can be used for pulsar navigation, pulsar timing array and other application targets.

　　Nan Rendong believes that large radio telescopes may also find some unprecedented pulsar phenomena, such as a pulsar paired with a black hole, which may produce a breakthrough theory.

　　Every little progress in the development of physics is accompanied by great difficulties and twists and turns. But at every stage of human civilization progress, physics has always stood at the forefront of liberating productive forces. Peng bo said that scientists used Arecibo telescope to discover gravitational waves and won the Nobel Prize in physics, while China Radio Telescope provided a great opportunity for natural science, especially physics-related fields.

　　"The answer is yes to whether the large radio telescope that the public is very concerned about can be used to find extraterrestrial civilization." Peng bo said that it is a weapon to detect exoplanets, especially terrestrial planets. Because of its improved sensitivity, it can see farther and fainter celestial bodies. By detecting interstellar molecules and searching for possible interstellar communication signals, the probability of finding extraterrestrial civilization is 5 to 10 times higher than that of existing equipment.

　　On July 3rd, after the installation of the feed cabin and the reflector panel was completed as planned, the large radio telescope will be debugged for more than two months, and it will be officially completed and put into use at the end of September. However, in order to optimize all functional parameters, it needs to be continuously debugged and improved in two or three years of observation.

　　"After the completion of the large radio telescope, it will become the ‘ Sharp weapon ’ To maintain the status of world-class equipment in the next 10 to 20 years. " Zheng Xiaonian said, "I hope that China scientists will use it to produce results as soon as possible." (Note holder Qi Jian; Participating reporters Wu Jingjing, Hu Xing and Yang Weihan)