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The design work of the fruit disassembly of Wuling Bin for the safety of the car

  [car home Technology] I don’t know if everyone in front of the screen knows anything about the 100,000-class pure electric compact car. As far as the author is concerned, the competition of this class of cars is actually quite fierce. On the one hand, it is a price war, on the other hand, it is repeatedly involved in design, safety and configuration. In this class of cars, (|) successfully circled the powder with its retro and beautiful shape. Of course, we don’t talk about design today, but look at the scientific and technological strength behind this boutique car through actual disassembly.

Home of the car

● Five-ring body frame

  The length, width and height of Wuling Binguo are 3950*1708*1580mm respectively, and the wheelbase is 2560mm. Thanks to its front-drive pure electric platform technology, the cabin space utilization can be maximized.

Home of the car

Home of the car

  For small cars, consumers are not only concerned about the performance of their cabin space, but also extremely concerned about their safety. Binguo adopts a five-ring car body frame structure, which can increase the rigidity of the car body and improve NVH performance, and at the same time, it can quickly transfer collision energy when a collision occurs, reduce the intrusion of the passenger compartment and protect the safety of the passengers.

Home of the car

Home of the car

  The A-pillar, B-pillar and sill beam constitute the thermoformed steel door ring, which can bear higher pressure and improve the torsional stiffness and safety of the car body. At the same time, the steel door ring of hot car can also improve the sealing performance and torsional stiffness of the car body, improve NVH performance and enhance ride comfort.

Home of the car

Home of the car

  The energy-absorbing box can reduce the maintenance cost of low-speed (20-30km/h) impact, because the energy-absorbing function of the energy-absorbing box can avoid the damage of the longitudinal beam, and the damaged energy-absorbing box can be replaced separately.

Home of the car

Home of the car

Home of the car

Home of the car

  According to official data, compared with the design of only the front finger beam and the front longitudinal beam, the triple frontal collision-resistant energy-absorbing structure design of Binguo can achieve a 15% improvement in energy absorption efficiency.

Home of the car

  There is also a steel anti-collision beam at the rear of Binguo, but there is no energy-absorbing box between it and the body. Even so, the existence of the anti-collision beam can disperse the impact energy of the rear collision, thus reducing the damage degree of the rear collision accident to the vehicle.

● Robust chassis

  Binguo adopts the suspension combination of front McPherson and rear torsion beam, which is common at the same level. Simple structure, durable leather and low manufacturing cost are a major feature of this suspension form.

Home of the car

  Compared with the open beam, the closed torsion beam with variable cross-section improves the stiffness of the torsion beam by 41% and the bearing capacity accordingly, thus reducing the vibration and improving the ride comfort.

Home of the car

  According to the manufacturer’s introduction, Bingo’s chassis adjustment style is tough, that is, to ensure ride comfort on the basis of achieving good support of the car body. Therefore, bingo will be more stable when driving at high speed, giving people more sense of security, and emergency lane-changing vehicles can also provide good support. Binguo 410km Linxi Exclusive Edition uses a brand-new motor with better performance, and its top speed can reach 130km/h, which is higher than that of other models with 100km/h and 120km/h, so it is quite necessary to match a robust chassis.

Home of the car

  Compared with the 175 and 165 tire widths commonly used in the same class, the wider tread of Bingo standard tires is beneficial to improve tire grip, make the vehicle run more stably, and ensure sufficient braking performance.

Home of the car

Home of the car

  In addition to making great efforts to filter the vibration of the chassis to improve NVH performance, Bingo also made a fuss about the details such as the sealing and sound insulation measures of the passenger compartment. Both the front and rear side doors of Binguo have two complete sealing strips to ensure the tightness of the passenger compartment and avoid the introduction of environmental noise and wind noise into the car. At the same time, the sound-absorbing cotton of the front and rear outer wheel covers of Bingo is made of non-woven fabric +PP+PET+ non-woven fabric, which can effectively absorb the tire noise and the noise generated when the suspension system works.

● Water-cooled flat wire motor and refined battery

  Binguo 410km Lingxi exclusive edition adopts water-cooled flat-wire permanent magnet synchronous motor, which is a three-in-one design and integrates motor, electronic control and differential.

Home of the car

  Compared with the round wire motor, the slot fullness of the flat wire motor is increased by 20%, the contact area between the flat wires is larger, the heat conduction is better, and the heat dissipation capacity is stronger. The power density of the flat wire motor is increased by 0.8kW/kg, and the high efficiency range is expanded by 11%, thus making the maximum efficiency of the motor more than 96%.

Home of the car

  We can see that there is a cooling water jacket on the stator shell of the motor, and the cooling liquid will circulate in the water jacket, taking away the heat generated when the motor works, and improving the continuous high power output performance and durability of the motor.

Home of the car

  Wuling’s refined battery should be familiar to all of you. I introduced this battery in detail in the technical article of Wuling Starlight (click to view).

Home of the car

  The battery core of Shenlian battery can not catch fire or explode in the acupuncture test; In the shallow needling test (the steel needle penetrates 1/3 of the battery thickness), the battery can still discharge normally; When the battery cell is extruded and deformed by external force up to 40%, it can not catch fire or explode. The safety performance at the cell level is quite eye-catching, which is also the key factor for the high safety of Bingo battery system.

Home of the car

  At the level of battery pack, Shenlian battery adopts a structure called MUST, that is, Multifunctional Unitized Structure Technology, a multifunctional integrated battery pack structure technology. The biggest feature of this structure is that the cells are put into the reinforced frame and then installed into the battery pack. This reinforced frame can improve the structural strength of the battery pack by 60%.

Home of the car

  Battery packs have suffered a lot in the laboratory, and it is common to go to the mountains and go to sea. The whole package of Shenlian battery has been tested by temperature change test, water immersion test, high temperature acupuncture test, vibration test, bottom dynamic impact test and charge-discharge test.

More exciting videos are all on the car home video platform.
"Needle Punching Test of Shenlian Battery Core"

  Like mainstream electric vehicles on the market, Bingo’s BMS battery management system also supports Che Yun Intelligent Collaboration. In addition to real-time monitoring of battery status at the vehicle end, all-weather and life-cycle second-level safety inspection will also be carried out in the cloud. When the system detects battery collision, stabbing or overheating, it will actively remind the driver to prevent problems before they happen.

Home of the car

Home of the car

  According to the manufacturer, this can reduce the maintenance cost by 90%. At the same time, Wuling has also strengthened the training of battery maintenance in the 4S after-sales service system. I believe that in time, its after-sales service outlets will be fully equipped with power battery maintenance capabilities. Compared with the power battery specialized service that can be seen in the market now, it is obvious that the official after-sales service can reassure consumers.

Home of the car

  In this regard, I also asked the engineer at the dismantling site whether there will be batteries in the form of direct cooling or water cooling with refrigerant installed on Bingo. The engineer’s reply is vague and only means "on the road". Perhaps in the future, Bingo with more powerful electric drive system will use direct cooling or liquid cooling battery system with active temperature control function, which is worth looking forward to.

● Full text summary:

  Wuling Binguo, as a pure electric small car, has done its homework in terms of cabin space utilization and safety, completely dispelling consumers’ concerns about small space and insecurity of small cars. At the same time, the affordable price of 59,800-88,800 yuan, combined with its fashionable and beautiful shape, is a good choice for buying food scooters in the near future. (Photo/Text/Photo/car home Chang Qinglin)

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The concentrated appearance of new products and ideas in the 133rd Canton Fair shows the vigorous vitality of China’s economy.

CCTV News:The 133rd Canton Fair will be held in Guangzhou in three periods from April 15th to May 5th, and the second period will be held from today (April 23rd) to April 27th. The Canton Fair has always been the window and epitome of China’s opening to the outside world, and it is also an important platform to promote China enterprises to go global and enhance the competitiveness of products and brands. At this year’s Canton Fair, enterprises have brought the latest products to attract partners.

The reporter learned from the China Foreign Trade Center that since the first phase of the Canton Fair was launched, the number of visitors has exceeded 1.26 million.

On the basis of maintaining 16 categories of commodities, the current Canton Fair has 54 exhibition areas and 159 special areas. Exhibitors brought the latest ideas and products, and comprehensively displayed the new trends and new achievements of various industries.

Exhibitor Du Yuanyuan:In the past, it was mainly based on OEM. Today, it is our own invention and innovation display. All the new products have come to the Canton Fair for release.

It is understood that the number of new products released online in this Canton Fair is about 800,000, which is more than a quarter of the total number of online exhibits, and the number of online and offline new product debut activities has reached 300.

Xiao Rong, Deputy Director of Canton Fair Business Office:Enterprises in the new exhibition area are concerned by a large number of overseas buyers, and more than 20% of overseas buyers visit the new exhibition area, and the negotiations and transactions are enthusiastic, which shows that China’s foreign trade enterprises are full of vitality.

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Test scores for men and women? New tricks of nucleic acid!

On May 9, 2022, the joint prevention and control mechanism of the State Council held a video conference. Committee member the Political Bureau of the Communist Party of China (CPC) Central Committee and Sun Chunlan, Vice Premier of the People’s Republic of China stressed that to improve the sensitivity of monitoring and early warning, big cities should establish walking. 15-minute nucleic acid "sampling circle" , broaden the scope and channels of monitoring. Ten days after the release of the policy, how are the provinces and cities implementing it?

01

Nucleic acid detection is divided into male and female

On May 16, 2022, Dalian released the city’s normalized nucleic acid detection method. Simply put:

When netizens were curious about why men and women made nucleic acids separately and were preparing to question them, the authorities also responded early: First of all, male and female members of the same family were scattered at different times for testing, and the risk investigation effect was better. On Tuesday, men were sampled and tested, and on Thursday, women were sampled and tested separately. Monitoring the same family is equivalent to monitoring twice a week. To realize the maximum risk warning function under the most economical and convenient premise. Saturdays are for all people who don’t have time at ordinary times, and the service time is relatively extended to meet the detection needs of those who don’t detect in time, thus solving the problem that it is inconvenient for citizens and friends to detect on weekdays. Netizen comment @ Stupid for 500 years: This method is actually quite scientific, assuming that you only have less than 50% of the population’s detection ability, so that the population can be evenly divided into two. The epidemic situation is characterized by clustering, which should be better than whacking hamsters. @ 中中中中: Distinguishing between men and women is the default social family. There is a high probability that there are men and women. Although this method is not absolute, it is more scientific and feasible than age and region. @ 中中中中: Although this practice in Dalian is efficient and economical, it is still inevitable that it will be leaked. Can it be improved from the perspective of big data on this basis? For example, nucleic acid code, add a new one Family nucleic acid detection ? Bind health in a family. In this way, people who are pregnant and disabled, who are inconvenient to move and have poor resistance, can avoid going downstairs to queue up for nucleic acid.

02

Waltz nucleic acid

On May 10, 2022, Hefei released the layout of normalized nucleic acid detection in this city. From the fineness of this method, we can see that the government has made great efforts:

This method also gives a lot. It is not in the period of high incidence of epidemic, but it is also a transportation hub and faces great pressure from imported epidemic. Make a sample. The task of nucleic acid detection is dispersed in several days, which not only relieves the pressure of local nucleic acid detection personnel, but also facilitates the government’s macro investigation of infected people in Covid-19.Quickly reduce the "poison circle". However, it is not uncommon to take five days to detect nucleic acids and waltz nucleic acids. Taiyuan, Lu ‘an, Huainan and other cities have taken similar measures.

03

48 hours nucleic acid

Compared with the above relatively loose normalized nucleic acid detection layout, Beijing, Ningbo, Hangzhou and other regions, which are still in the high epidemic period, take more nucleic acid detection within 48 hours. Take Beijing as an example:

Generally speaking,When the local epidemic situation is under control, the cycle will be gradually relaxed from 48 hours to 72 hours.. Take Shenzhen as an example: since March, Shenzhen has required citizens to have a negative nucleic acid test certificate within 48 hours when entering residential areas, urban villages and various public places. As the local epidemic situation tends to be flat, on April 5, the epidemic prevention and control headquarters of novel coronavirus adjusted the epidemic prevention policy, requiring citizens to have a 72-hour negative nucleic acid test when entering and leaving various public places and taking public transport. In addition to the normalized nucleic acid detection layout, Xiaobian also found that Jincheng City, Shanxi Province also wrote antigen detection into the normalized prevention and control policy. Emergency access to some places,Hold a negative antigen certificate within one day.. 

The subjective question of "15-minute nucleic acid" sampling circle "is really played by some local governments, and it can also intuitively reflect the ruling ability of local governments. I hope that there will be more policies for the people, such as "separating men and women in nucleic acid testing", and the policy of tossing the people will not appear!

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Sudden in the middle of the night: Country Garden official announcement!

On the evening of December 12th, Country Garden, which was listed in Hong Kong, announced that its executive directors Yang Huiyan, Mo Bin, Yang Ziying and non-executive director Chen Nai offered to reduce their salary.

Before the salary reduction, the annual salaries of Yang Huiyan, Mo Bin, Yang Ziying and Chen Fu were 370,000, 3,000,2,000 and 370,000 yuan respectively, and after the salary reduction, they were uniformly adjusted to 120,000 yuan, that is, the monthly salary was only 10,000 yuan.

Previously, Country Garden disclosed that in the face of unprecedented difficulties, it has promoted a number of self-help measures, among which it mentioned that "in 2023, the Group tried its best to cut administrative expenses, with a total amount significantly reduced by nearly 60% compared with 2021".

On December 5th, the latest organizational restructuring of Country Garden was reported on the Internet, which "merged 14 regional companies into 7 new regions to promote flat and efficient management". People close to Country Garden confirmed that the news was true.

Four directors collectively reduced their salary.

Mo Bin dropped from 3 million to 120,000.

Country Garden announced on the Hong Kong Stock Exchange on the evening of December 12 that, in combination with the needs of the industry and the actual operation of the company, the executive directors Yang Huiyan, Mo Bin and Yang Ziying and the non-executive director Chen Nai of the company offered to reduce their salaries, and signed a supplementary agreement on directors’ services and a supplementary letter of appointment with the company on November 1, 2023.

Specifically, the adjusted salaries of the four directors are all 120,000 yuan/year, which translates into a monthly salary of 10,000 yuan/month. According to the data of the National Bureau of Statistics, in 2022, the average annual wage of employees in urban non-private units in China was 114,029 yuan, and that in Guangdong Province was 124,916 yuan. In other words, after the salary reduction, the salaries of the four directors of Country Garden are basically in line with the average social salary.

Among them, Mo Bin, the director and president of Country Garden, had the biggest decline. Before the adjustment, his annual salary was 3 million yuan, which was as high as 96% this time. Compared with the salary level before Country Garden’s accident, the salary in Mo Bin will drop even more.

Before the adjustment, the salaries of Yang Huiyan, Yang Ziying and Chen Tai were 370,000 yuan, 2 million yuan and 370,000 yuan respectively, and the decline after this adjustment was not small.

It is worth mentioning that the above three directors are actually members of Yang’s family, the real controller of Country Garden. Yang Huiyan just took the scepter from his father Yang Guoqiang in March this year and became the chairman of the board of directors, while Yang Ziying is Yang Huiyan’s sister and Chen Tai is Yang Huiyan’s husband.

Just finished adjusting the organizational structure

Greatly reduce administrative expenses.

According to public information, this is not the first time that Country Garden executives have reduced their salaries. In the past two years, the company has made several adjustments to the executive compensation. By 2023, the executive compensation will be 86% lower than that in 2021. These executives include the vice president of the company headquarters, the general manager of the functional center and above, and the regional president.

On December 5th, Country Garden also heard the news of great adjustment of organizational structure.

Net Country Garden merged 14 regional companies into 7 new regions: Hebei and Beijing merged into North China; Shandong and northern Jiangsu merged into Lusu region; The northwest and Shaanxi merged into the central and western regions; Anhui and Zhejiang merged into Zhejiang-Anhui region; Jiangxi and Fujian merged into the Jiangxi-Fujian region; Yunnan and Sichuan merged into Sichuan-Yunnan region; Guangxi and Jiangzhong merged into Jiangzhong region.

In this regard, people close to Country Garden confirmed that the rumor was true. The person pointed out that under the current industry situation, the adjustment aims to further improve the adaptability between the organization and the business, promote flat and efficient management, coordinate and complement the available resources, and do their best to ensure the realization of the strategic goal of "guaranteeing delivery".

Country Garden official WeChat official account published a monthly business meeting article on December 8th, which showed that the company’s administrative expenses were greatly reduced by nearly 60%. "The administrative expenses of the whole group are based on the principle of zeroing, and they are not necessary to spend. The rigid expenditures are reduced as much as possible through integration and intensification. In 2023, it will be significantly reduced by nearly 60% compared with 2021."

At the meeting, Yang Huiyan also revealed that the delivery challenge will enter the deep water area in the next 12 months. In 2024, the delivery volume of Country Garden is expected to exceed 400,000 sets, and the number is still huge. She said, "Guaranteeing delivery is a very difficult but also very important task. I hope that the company will wait and see, attach great importance to it and do a good job in pre-planning."

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Some people don’t buy the "618" promotion that is "particularly cost-effective"

  The situation of domestic epidemic prevention and control is improving, and it coincides with the superposition of Children’s Day and Dragon Boat Festival. Many businesses are gearing up for this year’s "6 ? 18" promotion, hoping to gain sales growth against the trend in the biggest consumption season in the middle of the year.

  How will consumers react to the marketing offensive of merchants?

  Selling is not only on the platform, but also on the phone?

  "In the past, the merchants of’ 618′ all sent text messages, and this year they received several calls." A consumer told Zhongxin Finance that the merchants who called her were all brands that she had placed orders for two or three times.

  On the social platform, many netizens are also voicing the marketing call of "618". Originally, they subscribed to stores or joined members for convenience, but they did not expect to become the source of "marketing calls": "Send a bunch of text messages, not enough push in the platform, but also call to buy."

  Netizens on a social platform exposed the sales calls they received.

  Zhongxin Finance noticed that these calls have both landline and private mobile phone numbers. The merchants who call are not only niche brands, but also many big brands such as Lancome, L ‘Oreal and Estee Lauder.

  "I feel that many bloggers are promoting the’ 618′ promotion this year, but they can’t buy it in buy buy." Another interviewee said that 618 only bought some necessary summer clothes and bought cat food for the "hairy children" at home.

  More preferential treatment, or secretly raise prices?

  Frequent harassing sales calls reflect the eagerness of merchants to promote sales. Some platforms also offer many discounts, such as Tmall’s "cross-store full 300 minus 50" and JD.COM’s "cross-store full 299 minus 50".

  However, compared with the eager mood of the business platform, many consumers are quite calm.

  "300-50 is equivalent to 200-33.3, and we have to make more goods from 100 yuan." Some netizens said that "300 MINUS 50" seems to be more cost-effective, but in fact it costs more.

  618 order page presented by a consumer to Zhongxin Finance.

  Some consumers told Zhongxin Finance that some merchants seem to have great discounts, but in fact they secretly raise prices. "I put together a list of more than 1,200 yuan in advance and added a shopping cart. I didn’t expect the amount to rise after the event started."

  She told Zhongxin Finance that one of the clothes changed from 400 yuan to 600 yuan after the promotion began, which led to an increase of about 200 yuan. "I was so angry that I gave up buying all the goods directly."

  Sino-Singapore Finance found that,Although the shopping carts of some e-commerce platforms will show the price reduction of goods, they will not prompt the price increase of goods."The shopping cart and the product page show no signs of rising prices, so it is difficult to leave evidence."

  Can the goods ordered be delivered on time?

  In the case that the epidemic has not been completely affected, logistics has become a common concern for consumers and businesses: "Can the goods under order be delivered on time?"

  Regarding the logistics problem, JD.com Express, in combination with the requirements of accurate management and control measures for community classification, quickly delivered JD.COM "618" goods throughout the country through various service modes, and some consumers received the goods on the day of placing an order.

  Data Map: Logistics workers are sorting the "618 Shopping Festival" goods. China News Service reporter Cui Nan photo

  Tmall told Zhongxin Finance that some agricultural products suppliers in remote areas chose to use the urban pre-warehouse of Tmall Supermarket to keep the logistics running continuously, thus ensuring the certainty of goods sales during the epidemic. "It is estimated that this year’s’ 618′, the transaction of agricultural and livestock products directly issued by Tmall Supermarket can achieve an increase of 35% to 120%."

  Relevant departments are also actively implementing the work of ensuring communication and smoothness.Recently, the smoothness of postal express network has rebounded significantly.According to the data released by the State Post Bureau on June 6, during the Dragon Boat Festival holiday this year (June 3 -5), the national postal express delivery industry collected about 940 million express parcels, an increase of 17% compared with the same period last year. About 970 million express parcels were delivered, an increase of 13.1% compared with the same period of the Dragon Boat Festival last year.

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Shanghai: The test sites for postgraduate entrance examination will be rearranged according to the nucleic acid results of candidates on the morning of December 21st.

CCTV News:"Published by imperial academy, Shanghai" WeChat official account published a letter to the candidates who took the 2023 research exam in Shanghai.

  Candidates:

  In 2023, the examination for postgraduate entrance examination has entered the countdown. Can go today, at this moment, please applaud yourself first, and applaud yourself for never giving up!

  The examination organization under the normalization of epidemic prevention and control has been going through three years, and every year we will encounter new situations and new problems. These days, we have received some candidates’ consultation in different ways, and put forward some opinions and suggestions to the examination work, from which we can appreciate everyone’s preparation mood.

  Please believe that on your way to your dreams, there is the care of the party and the country and countless people are escorting you. Under the guidance and support of the Ministry of Education, under the leadership of the Shanghai Municipal Party Committee and the Municipal Government, we will work together with all relevant units to make the greatest efforts to achieve "taking the exam as scheduled, taking all the exams, and studying the exam safely", making overall plans for epidemic prevention and control and organizing the exam, making every effort to make all the preparations for the exam, and striving to give you the most attentive and warm security guard. Here, I sincerely hope that every candidate will give more understanding and support to our work.

  In order to help you take the exam smoothly, we have compiled the "Guide to Taking the Exam", which is attached with the letter. Please read it carefully. At the same time, I would like to remind all candidates:

  Candidates who take part in this postgraduate examination must complete a nucleic acid sampling in this city before 12:00 a.m. on the 21st. Relevant departments have made careful arrangements to ensure that candidates can be "single-person and single-tube" when they show their admission tickets, giving priority to the inspection and getting the results as soon as possible. Considering that some candidates in Shanghai are currently at home, the relevant departments will arrange for candidates to go out to take the exam smoothly during the exam. Candidates who return to Shanghai from other places to take the exam can stay in relevant hotels with their identity certificates.Candidates are advised to reduce unnecessary walking and do personal protection during preparation and examination. The test center school will try its best to provide drinking water, medical care and other services for candidates. If candidates have special needs, please take the initiative to contact the test center.

  There are always some beautiful things on the road of life that deserve our all-out efforts. It is never an exam that determines the fate of your life, but every challenge you laugh at, every persistence you persevere in, and every dream you pursue without regret.

  These days, the temperature in Shanghai has fallen below zero, but the sun is still warm on the shoulders. All the past is a preface, and the infinite future is waiting for you to write.

  May you work hard and move forward bravely, and live up to your youth and dreams!

  This time, we stick to it together and come on!

  Shanghai Education Examinations Institute

  December 20, 2022

  A Guide for Candidates Taking the 2023 Postgraduate Examination in Shanghai

  As the entrance examination is just around the corner, please carefully read the examination epidemic prevention tips issued by the Municipal Education Examinations Institute on December 9 and 16, strictly abide by the epidemic prevention requirements, and go to the examination safely. The following reminders are also required for candidates:

  Reminder 1: Do a good job in personal health management before the exam.

  According to the latest epidemic prevention requirements of the city’s research and examination, candidates must do a good job of self-health monitoring before the exam, reduce gathering and mobility, do not go to crowded places, and be the first person responsible for health and safety.All candidates who take part in the postgraduate examination in Shanghai must complete a "single person and single tube" nucleic acid sampling in this city on the morning of December 21st (please complete it before 12:00 noon, and candidates can take a "single person and single tube" sampling with their admission ticket), and take the nucleic acid test results as admission documents during the examination period (paper version or electronic version is acceptable).Candidates should update their health information in the "Candidate Health Information Registration System" according to their own reality. From December 16th to 24th, each test center in this city will send a warm reminder to the candidates every day through the on-site letter or SMS of China Graduate Admissions Information Network, and ask the candidates to pay close attention to the epidemic prevention requirements and precautions in time.

  Reminder 2: Print the admission ticket in advance.

  Candidates can log in to China Graduate Admissions Information Network (http://yz.chsi.com.cn/) with their online username and password, and download and print the Admission Ticket for the 2023 National Postgraduate Admissions Examination. Please read the instructions and requirements on the admission ticket carefully, keep the admission ticket well, and do not make any marks on it.

  Reminder 3: Check the test center, test center number and seat number.

  From now on, candidates should log on to the websites of the relevant colleges and universities, pay attention to the announcement notice in time, and inquire about the examination places, examination rooms, seats and other information of their respective subjects.It is particularly important to note that because the test center will rearrange the examination room according to the test results of candidates’ nucleic acid on the morning of December 21st, the information of some candidates’ examination room may be adjusted, and the information related to the change of the test center and examination room will be informed to the relevant candidates from the afternoon of December 22nd to the morning of the 23rd through the internal letter of the research website and other channels. Candidates are requested to understand and pay close attention to relevant information.

  Reminder 4: Grasp the exam time.

  The examination time is from December 24th to 25th (8: 30am & mdash; 11:30, 14: 00 pm & mdash; 17:00), individual examination subjects exceeding 3 hours will be held on December 26th. Candidates are not allowed to enter the examination room to take the exam as a subject after 15 minutes, so be sure to be familiar with the location of the test center and the route to the exam in advance, pay attention to the weather and traffic conditions on the day of the exam, and make appropriate arrangements to travel in advance to ensure a smooth exam. Pay special attention to carefully check whether the documents and exam supplies are complete before going out.

  Reminder 5: Take all the documents to take the exam.

  Each exam must be based on the candidate’s valid identity card and the Admission Ticket to enter the examination room. Exam supplies that can be carried include pens or signature pens with black handwriting, 2B pencils, rubber without envelopes, drawing instruments, etc. Chemistry (agriculture) (subject code 315) in the unified examination subject can use a scientific calculator with logarithmic and exponential calculation functions without dictionary storage and programming functions, and calculators are not allowed in other unified examination subjects. Whether the self-propositional subjects of the admissions unit are allowed to use calculators should carefully check the "admissions unit description" on the admission ticket; Draft paper shall be distributed uniformly by the test center.

  Reminder 6: Candidates bring their own lunch.

  In order to avoid the spread of the epidemic caused by the crowd gathering, the test center does not provide lunch during the examination. If candidates need to stay at school for preparation, please bring their own lunch and rest in the area designated by the school. The test center school will try its best to provide drinking water, medical care and other services for candidates. If candidates have special needs, please take the initiative to contact the test center.

  Reminder 7: Actively cooperate with the admission inspection.

  Actively cooperate with the admission safety inspection and identity verification, and if you carry any articles other than those specified, you should put them in the designated location according to the regulations; If the security equipment gives an alarm during the inspection, you should consciously show the relevant metal objects to the invigilator. For the convenience of quick inspection, try not to carry (wear) metal objects or clothes. Do not bring any books, periodicals, newspapers, manuscript papers, pictures, materials, tools with communication functions (such as mobile phones, photographic equipment, scanning equipment, intelligent equipment, etc.) or electronic products with storage, programming and inquiry functions, correction fluid, correction tape and other items into the examination room. Special reminder: it is strictly forbidden to bring mobile phones into the examination room. Once found, they will be dealt with in violation of regulations regardless of whether they are turned on or not.

  Reminder 8: Abide by the rules of the examination room.

  Each test center will do its utmost to create a safe and suitable test environment for candidates, provide consultation and medical services, and provide reasonable convenience for special candidates such as the disabled. Candidates are also requested to actively cooperate and abide by the test center management and examination room rules.

  After the test signal is issued, candidates can begin to answer questions; After the end of the exam signal is issued, you should immediately stop writing and stop answering questions; Raise your hand to ask questions such as papers, answer sheets, answer sheets, etc., or unclear handwriting, missed printing, reprinting, and missing pages. But questions involving the content of the test questions shall not be asked by the invigilator. Special reminder not to take the test paper, answer sheet and draft paper out of the examination room, otherwise it will be dealt with in violation of regulations.

  Reminder 9: Pay attention to the exam details.

  Candidates should fill in (paint) the name, candidate number and other information accurately and clearly at the designated location and within the specified time, and paste the bar code as required. Candidates should bear the responsibility for missing the bar code, filling (painting), filling (painting) or illegible answers that affect the marking results.

  Candidates should answer questions outside the sealed line of the answer sheet or in the area specified in the answer sheet; Do not use pens and paper outside the regulations to answer questions, and the answers written on draft paper or outside the prescribed area will be invalid; Do not make any marks on the answer sheet or answer sheet. Only pens of the same type and color can be used in the process of answering questions. When answering the question, be sure to read the question number mark on the answer sheet before answering the question. Anyone who does not answer the question in the correct position will bear the consequences.

  Unified examination subjects, examination papers by the invigilator unified unpacking and distribution, answer sheet (card) by the invigilator unified recycling. Enrollment units from the proposition subjects, by the candidates themselves unpacked test bags and sealed test bags, answer sheets and sealed seals issued by the test center; After the exam, the examinee will put the test paper and answer sheet into the sealed bag.

  Reminder 10: Take the exam in good faith.

  The examination room is equipped with a video monitoring system, and every move of each candidate is recorded in the whole process. During the examination, the departments of education, public security, internet communication and radio management will rectify the environment in and around the examination room, severely investigate and punish those suspected of cheating by using communication tools, and investigate criminal responsibility for suspected crimes. According to the Criminal Law Amendment (IX) of People’s Republic of China (PRC), criminal acts such as "cheating in organizing exams", "illegally selling, providing test questions and answers" and "substituting for exams" will be severely punished by the criminal law. Please take the exam in good faith, abide by the law and discipline, and don’t regret it for life because of temporary luck!

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Say goodbye to "Iron Foot Board" and click "Handheld Office"

    Xinhua News Agency, Lanzhou, May 28 (Reporter Li Jie) Yang Changyou’s hanging heart has also settled down when he saw that 1,326 yuan of subsistence allowance funds have arrived.

    "Just in time." Yang Changyou, 58, said that I never expected the application process to be so fast. In April this year, he applied and uploaded materials through his mobile phone, and the village cadres took the initiative to help sort out the materials. In May, the funds were approved.

    Yang Changyou is a villager in Sandungou Village, Liangshui Town, Wudu District, Longnan City, Gansu Province. Originally, his son was working outside, and he and his wife were farming at home. "I just wanted to save some money and wait for my baby to find a wife." However, at the end of 2024, my wife suddenly had intestinal perforation. "We spent more than 60,000 yuan before and after, and it also delayed the baby’s work." Yang Changyou said.

    After the relatives in the village learned the situation, they asked him to try to apply for subsistence allowances. However, when he thought that the villagers had applied for ID cards, household registration books and a lot of photocopied materials in the past, he somewhat retreated. "Recently, the land at home has to be cleaned up, so there is no time to get it."

    What he doesn’t know is that in September 2024, Longnan City officially launched the "Longnan Social Assistance Smart Management System" and the "Longnan Assistance Link" WeChat applet, which can be applied by computer or mobile phone, and there is no need to run away. Under the telephone prompt of Sandungou village cadres, the son who accompanied his wife to see a doctor completed the application with his mobile phone in the hospital.

    "The development of this system and small programs is really convenient for grassroots cadres and the masses." Liu Lu, a full-time cadre of civil affairs in Liangshui Town, said frankly.

    Looking back on the people’s experience of seeing a doctor, Liu Lu said that in the past, when applying for assistance, villagers had to carry a pile of paper materials, which was basically difficult to bring all of them every time, and they had to be supplemented repeatedly. "You have to run two or three times and run out of a pair of iron feet." Not only the masses are distressed, but as a grassroots cadre, she is also under pressure: Liangshui Town has three communities and 18 administrative villages with a permanent population of more than 30,000, but she is the only one in charge of civil affairs at the township level. "The workload is heavy and it is difficult to ensure accuracy and timeliness."

    Longnan City, which is located in Qinba Mountain area, is restricted by geographical conditions. Most villages are located in mountainous areas, far from the town government, and it is inconvenient for people in need to apply for assistance. At the same time, the number of needy people with social assistance system in Longnan accounts for one-tenth of the permanent population, and the average annual subsidy for needy people accounts for more than 50% of the city’s annual general public budget revenue. Efficient and convenient civil assistance is the key to the reform that cannot be ignored.

    Social assistance is related to people’s livelihood and people’s hearts. The key to civil assistance lies in timely understanding the urgent needs and worries of people in need. In order to implement the spirit of the eight central regulations, Longnan focused on the people’s worries, worries and worries, conducted in-depth research and demonstration, and finally launched the system and small programs after a year of development, construction and trial operation.

    Wang Yinfu, chief of the Department of Pension Services and Aging Work of Longnan Civil Affairs Bureau, said that the development of the system and small programs has enabled people in need to apply for assistance such as subsistence allowances, extreme poverty and temporary assistance with computers or mobile phones without leaving their homes, so as to facilitate the people and serve the people, and realize the transformation of social assistance services from "iron feet" to "handheld office", effectively solving the problem that people’s application for assistance is restricted by personal health status, time, place and human interference.

    During the interview, the grassroots staff also reflected that the "handheld office" also effectively reduced the burden on the grassroots, and the grassroots staff could provide more accurate on-site guidance, and they did not need to fill in paper files in the whole process, avoiding the repeated collection and provision of materials.

    According to the statistics of the Civil Affairs Bureau of Longnan, up to now, the needy people in Longnan have applied for more than 10,000 households and more than 40,000 people online, and 4,084 households with more than 14,000 people have been approved, which has truly facilitated the people and benefited the people, and is accurate and efficient. "We will continue to strengthen the informationization of social assistance and do more practical things for the people." Wang Yinfu said.

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Research progress in maize one-way cross incompatibility in Institute of Genetic Development

  Corn is one of the crops with the largest sown area and the highest yield in China. Corn has a wide range of uses, not only as feed, but also for various industrial purposes, and provides high-quality protein and starch for human beings. The natural outcrossing rate of maize is as high as 95%, so hybrid seed production and special maize production need to be strictly separated. Conventional time and space isolation measures are time-consuming, laborious and difficult. How to realize corn non-isolated production in a scientific way is an urgent production problem. In general, both self-pollination and hybridization of maize can bear fruit, but there is a phenomenon that a few maize do not accept other maize pollen in nature, which is called unilateral cross-incompatibility (UCI) of maize. Some studies have reported three UCI loci, Ga1, Ga2 and Tcb1, which are composed of pollen and filament determinants respectively. According to the structure and function of UCI loci, maize in nature can be divided into three types: S type (Ga1-S, Ga2-S and Tcb1-S), which contains both pollen and filament determinant genes; M-type (Ga1-M, Ga2-M and Tcb1-M) only contains pollen determinant genes; Common types (ga1, ga2 and tcb1) contain neither pollen nor filament determinant gene. UCI controls the sexual transmission direction of haploid gametes and can be used for reproductive isolation between different types of maize. 
  Chen Huabang, research group of Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, devoted himself to the study of maize one-way cross incompatibility, and reported the pollen and filament factor genes at Ga1 and Ga2 loci and their applications successively (Zhang et al., 2012;; Zhang et al., 2018,Chen et al., 2022; Cai et al., 2022)。 Recently, the team has once again made important progress in the study of maize incompatibility. In this study, the pollen determinant Tcb-m at Tcb1 locus was cloned. This is the "last" cloned determinant gene of maize incompatibility system. So far, all the key determinants of the three incompatibility sites have been cloned and verified, which laid the foundation for the study of commonness and specificity among maize incompatibility systems. On November 16th, related research results were published online in Plant Biotechnology Journal with the title of A Pollen Expressed PME Gene at TC B1 Locus Confers Maize Independent Cross-in Compatibility. 
  It was found that the pollen factor Tcb1-M at TCB1 locus of maize encoded Pectin Methylesterases (PME), which was specifically expressed in the pollen of Tcb1-S materials. Studies have shown that the expression of Tcb1-m gene in common corn by transgenic method can make it pollinate and bear fruit for Tcb1-S type materials. Tcb1 locus and Ga1 locus are closely linked, and their pollen and filament factors are highly similar, and the two loci are in tandem repetitive relationship. However, Tcb1 locus only exists in the primitive ancestor of maize, and Ga1 locus exists in both maize and maize, which indicates that the two loci have differentiated and produced specificity after maize domestication. There are also a certain number of materials containing Ga1 or Ga2 loci in common corn in nature, which will reduce the application value of UCI loci in corn. In this study, the materials containing three sites were combined in different forms, and a polymer material containing two or three incompatible sites was created, which not only effectively hindered the pollen of ordinary corn, but also effectively prevented the risk of penetration of materials containing a single incompatible site, and further improved the application of corn incompatibility in non-isolated seed production. This study laid a material foundation for the mechanism analysis of incompatible systems. 
  The research work is supported by the National Natural Science Foundation of China. 
  Cloning and application of pollen factor gene at Tcb1 locus in maize 

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Publicity of the evaluation results of the 24th China Patent Award.

According to "China Patent Award Evaluation Method" and "China National Intellectual Property Administration’s Notice on Selecting the 24th China Patent Award", the 24th China Patent Award has selected 30 pre-winning projects of China Patent Gold Award, 10 pre-winning projects of China Design Gold Award, 60 pre-winning projects of China Patent Silver Award, 15 pre-winning projects of China Design Silver Award, 782 pre-winning projects of China Patent Excellence Award and 45 pre-winning projects of China Design Excellence Award, which are hereby publicized.

During the publicity period, if any unit or individual has any objection to the evaluation results, it shall submit it in writing to the China Patent Award Evaluation Office and provide the necessary supporting materials. If the unit raises an objection, it shall affix the official seal of the unit and provide the contact person, telephone number and e-mail; If an individual raises an objection, he shall sign his real name and provide identification materials, effective contact telephone number and email address.

Attachment:Pre-winning projects of the 24th China Patent Award. pdf

China Patent Award Evaluation Office

April 17, 2023

Chuanzhen: 010-62083094

Email: zhuanlijiang24@cnipa.gov.cn

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Pigskin is made into corneas to restore vision for the blind without waiting for donations.

usepigskinThe cornea can restore the vision of visually impaired patients.

really? ? ?

Yes, this study was recently published in Nature Biotechnology, a sub-journal of Nature, and a pilot study has been carried out, which has restored the vision of 20 patients without adverse reactions.

In the world, there are as many as 12.7 million people who are sick or even blind because of corneal damage. At present, the most common method is to transplant corneas donated by human beings, but only one in every 70 patients can get a corneal transplant.

Moreover, patients who need corneal transplantation often gather in low-income and middle-income countries or regions, and the opportunities for treatment are very limited.

At this time, the pig came, and the pig came with its powerful effect.

However, when it comes to pigskin, few people associate it with cornea. How are they related?

Using collagen molecules from pigskin

One of the main components of cornea is collagen. By extracting collagen molecules from pigskin, researchers developed a collagen-based corneal matrix substitute: Bioengineered Porcine Construction (Double Crosslinked for short: BPCDX).

Corneal implant made of collagen in pig skin

How exactly is it done?

Firstly, after extracting collagen from pigskin, it was purified and freeze-dried.

Collagen was then dissolved in sterile phosphate buffered saline (PBS) at room temperature to form a 5% collagen solution.

Next, a new vacuum evaporation technology is used, which can controllably achieve high collagen content (12-18%). In the past, the weight of collagen in human test implants was limited to 10% (the natural human corneal collagen content was 13.6%).

However, pure collagen is a soft material which is easy to degrade. In order to solve this problem, researchers used two chemical crosslinks to finally form a transparent implantable hydrogel, which improved the mechanical strength, degradation resistance and long-term stability of the implant.

But is it reliable to use pigskin to make cornea and treat visually impaired patients?

In this regard, the researchers also conducted a series of clinical trials, and they conducted feasibility studies in India and Iran.

The researchers implanted BPCDX in 20 visually impaired patients to reshape the native corneal stroma without removing existing tissues or using sutures.

During the two-year follow-up, no adverse phenomena were observed.

As can be seen from the table, 14 legally blind people before operation were not judged to be blind after operation. Moreover, all subjects in the two queues were intolerant of contact lenses before operation, but they could tolerate wearing contact lenses for a long time at 24 months after operation.

Judging from the effect of clinical trial, this is not an unreliable technology, but it sounds very complicated. Can ordinary patients afford it?

Low cost, easy storage and minimally invasive.

Mehrdad Rafat, an associate professor of biomedical engineering, said:

We do a lot of research to ensure that this technology is affordable for everyone, not just the rich.

In this technology, pigskin used in extracting collagen is a by-product of food industry, which is easy to obtain and the cost is not very high.

In addition, researchers have developed compatible packaging and sterilization processes, so that bioengineered corneas can be stored for up to two years before use, so that they can be provided to different regions and even rural areas without biological banks or storage tissue preparation facilities.

It is worth mentioning that the cornea made of pigskin does not need to remove the patient’s own tissue when treating visually impaired patients, but instead, it is a small incision through which the implant is inserted into the existing cornea.

And this new surgical method does not need suture, but uses advanced laser surgery to make corneal incision with high precision, and then uses simple surgical instruments to perform it manually when necessary.

It costs less and is minimally invasive, so when will this technology be popularized?

Not yet!

Before using implants in medical care, it is necessary to conduct larger-scale clinical research and obtain market approval from regulatory agencies.

In addition, researchers also want to study whether this technology can be used to treat more eye diseases, and whether implants can be adapted to individuals to obtain greater curative effects.

One More Thing

In fact, in 2016, there was a successful case of bioengineered corneal transplantation in South China. A 14-year-old boy from Jiangxi chose bioengineered membrane transplantation. After a week of treatment, his vision reached 0.1.

Source: Southern Metropolis Daily

However, this operation uses a rarer pig cornea, and this study of Nature is to extract collagen from pig skin to make a corneal substitute. In contrast, the latter has greater application potential.