The meals are taken care of by the teachers so that the 12th grade students can rest assured to study for the exam. Starting from 9-6, every day, the canteen of Trung An High School is bustling from dawn. The teachers went to the market to buy food and then went back to prepare and cook. At about 10 o’clock, the dishes were finished, they made a portion of rice so that the children could have rice to eat after school. On the day we arrived, the teachers were preparing 200 meals with 30 vegetarian meals according to the students’ needs, the rest was salty food. The teachers are “non-specialist chefs”, but the meal is very attractive: braised shrimp, melon soup cooked with meat, stir-fried vegetables; and vegetarian dishes are fried mushrooms, vegetarian rolls… and dessert is watermelon. The children who ate the rice were all touched and praised. The image that touched many people was that the teachers were all working in the kitchen. The girls stand in the kitchen to fry, the teachers prepare vegetables, make shrimp, cut meat… the atmosphere is bustling and full of fun. Helping teachers with 12th graders who do not have classes, some parents of students near the school also support and especially students who have just finished 10th and 11th grade assigned to groups. to the canteen to help teachers. Trinh Minh Thanh, who is about to enter grade 12, shared: “I came to help my teachers cook for my brothers and sisters. We want to empower you to confidently enter the exam. Besides, next year I will be in 12th grade, and then I will be supported by the students in the lower grades like that.” Mr. Le Van Dung, Principal of Trung An High School, said: The model of cooking lunch for grade 12 students during the preparation time for the high school graduation exam has been implemented by the school for the past 3 years. This year, the scale of cooking is more with 200 meals per day or more. Because this is the time of “sprint”, the school creates conditions for the children to have lunch, take advantage of the rest to review in the afternoon. Besides, the organization of eating at school also ensures food hygiene and safety, and fosters the spirit of the students to strive for learning. Mr. Dung added that, in order to implement cooking for students, right from the beginning of the second semester of the school year, the school planned and informed the students’ parents, receiving enthusiastic response. The cost of cooking is from the socialization of students’ parents, school teachers and benefactors. Ms. Nguyen Thi Chinh, a clerical worker at Trung An High School, who goes to the market to cook every day, said: Right from noon the previous day, the teachers discussed with each other what the menu for the next day was. After the menu is available, the teacher will notify the class president so that the students can notify their friends and register for a meal, including vegetarian and non-vegetarian. From 6 am the next morning, Ms. Chinh went to the market with a carefully calculated amount of food. Just like that, the meals for students are more and more professional and delicious. Chinh smiled gently: “I’m happy to see the children eat well and satisfy their appetite”. As for Mr. Vo Cong Minh, Secretary of the Union of Trung An High School, always present early every day to finish the meal for the newly returned students, sharing: “Teachers want to contribute a little effort so that the children can have more motivation. Successful completion of the upcoming exam”. For the 12th graders, when talking about school lunches, each student has an emotion, but they all express their gratitude to their teachers for their concern. The children confided that, seeing the teachers who are busy with chalk on the podium every day in the kitchen cooking each dish, it was really touching. There are many children from far away, who register to eat at school in time to rest in the afternoon to continue studying; I have a brother, my parents work all day, so I choose to stay at school to eat lunch with my friends. But there are also children who choose to have lunch at school for a very lovely reason. Truong Thi Bao Tran, grade 12, shared: “I choose to eat at school to chat with friends and teachers. It won’t be long before we have to leave school and teachers.” There are meals that are seasoned with love, cooked with the love of teachers. Therefore, the children borrowed the name of a reality TV show that “varied” when talking about meals at Trung An High School: “Prepare the rice the teachers cooked!”.

People get vaccinated against COVID-19. Photo: AFP/VNA In Singapore, technology has really been “powering” to increase the efficiency of vaccine use. Behind every immunization center in Singapore is a vast virtual infrastructure that can capture and categorize each COVID-19 vaccine shot to make the vaccination campaign as effective as possible. Singapore has built integrated solutions to collect and handle data disparities. The system is also flexible to adapt to new cases should Singapore change its COVID-19 vaccination strategy. One of the solutions that Singapore is applying is the development of error detection software. These software can detect errors when people misrepresent personal information during vaccination scheduling before this information is entered into the database and need human correction. Since Singapore launched its COVID-19 vaccination program at an early stage in January, the Integrated Health Information System of Singapore (IHiS) has processed between 4,000 and 5,000 vaccination data per day. . At that time, there were about 200 false declarations every day and all of these errors had to be corrected manually. However, thanks to the software’s continuous improvement, now the number of cases to be corrected is reduced to just 20 per day, while IHiS’s system processes up to 50,000 records per day. In Denmark, technology is used to attract and encourage people to get vaccinated. Researchers from the University of Copenhagen in Denmark are testing a game with virtual reality technology to educate people about the benefits of vaccination. Users will wear virtual reality glasses, playing the role of an elderly person trying to walk through a crowded square. In this game, the people in the red shirt are infected with COVID-19, while the blue shirts are people who have been vaccinated. Professor Robert Bohm of the University of Copenhagen said that after players experience the virtual reality game for themselves, their intention to vaccinate will be even more motivated. In the United States, several cities and counties in the country, including Los Angeles, Philadelphia, New Orleans and Newark, are using advanced psychoanalytic technology to help build and expand vaccination programs. These cities have partnered with the company Zencity and the Ash Center of Harvard University’s Kennedy School to study people’s psychology when vaccinating. Through this program, US localities will use Zencity’s tools to collect and analyze citizen feedback from available sources, such as social media posts, online channels, and online channels. local news site. The tool then uses artificial intelligence (AI) to classify and sort the data based on topics, trends, anomalies, and people’s perceptions. Cities will receive a report from Zencity, which includes different demographics about vaccines as well as public sentiment towards the vaccination program. In addition, the report also displays misinformation that may need to be addressed and recommendations on how to communicate the vaccine. This tool is highly appreciated by cities in the US. Deana Gamble, head of communications for the city of Philadelphia, said that thanks to the app, the city government understands that it needs to provide accurate and up-to-date information to those who are still uncertain about the benefits of using the app. vaccinations and how to administer them. Not only does it help speed up vaccination progress, but technology also makes access to a COVID-19 vaccine more equitable for many groups. In Italy, the Lombardy regional government has approved the application of an algorithm developed by scientists to decide who should be given priority to receive the COVID-19 vaccine. A team of scientists from the University of Bicocca in the city of Milan has developed an algorithm that aims to end the controversy over which groups should be given priority to get the COVID-19 vaccine. The researchers divided the patients worst affected by COVID-19 into groups based on age, epidemiological history and many other factors. In addition, a team of experts from the University of Bicocca has also identified 34 conditions and diseases that may increase the risk of contracting COVID-19, including diseases such as diabetes, cardiovascular disease, anemia and other diseases. blood cancer. “We believe that by vaccinating those most at risk, we can avoid hundreds of intubation and deaths in Lombardy and beyond,” said Professor Giovanni Corrao of the University of Bicocca. all of Italy”. Currently, the Italian Ministry of Health is also considering recommendations for the use of this technology nationwide. If vaccines are considered a powerful weapon for humans against the SARS-CoV-2 virus, the above specific examples show that technology, in many different forms, can increase the strength and effectiveness of the virus. this weapon, thereby helping people soon “reach the target” of herd immunity.

“Every time I see a patient facing life and death, I am ready to donate blood,” midwife Hoang Thi Hang confided. “In that situation everyone would do the same” In the many times of blood donation to save lives, the time she rode a motorbike 45km 6 years ago to give emergency care to a bleeding pregnant woman with Ms. Hoang Thi Hang (Medical Center of Nguyen Binh district, Cao Bang province) she still remembers it clearly. That day, when I received a call from the Chairman of the SOS blood donation club in Cao Bang province, it was already 10:00 at night. It was a woman with bleeding that the blood store of the provincial general hospital ran out of blood type. “By natural reflex, I got up and drove 45 km from my home to the provincial hospital to donate blood for the sick. I myself did not think about what I would encounter on the way,” – Ms. Hoang Thi Hang recounts his story. Also in another time, when Hang was on a business trip in Thach An district, Cao Bang, on the way back, she received information that there was a patient in need of emergency blood and the blood group coincided with her blood group B. Forgetting the fatigue of the business trip, Hang drove down to the hospital to donate blood. At that time, she only thought about how to walk as quickly as possible so that the patient could hope to be saved. “Every time I see a patient facing life and death, I am ready to donate blood, just hoping that my blood will help them through the crisis,” midwife Hoang Thi Hang shared. Working at the Medical Center, when a patient needs blood, she is ready to respond. I don’t think it’s a big job, but in a situation where people can save lives, everyone will do the same! Ms. Hoang Thi Hang in a blood donation session Right from 2004 when she entered Cao Bang Medical School, Ms. Hoang Thi Hang was taught by teachers about voluntary blood donation. When she went to clinical practice at the Provincial Hospital and witnessed with her own eyes many acute blood loss patients being saved from those volunteer blood drops, she was even more eager to participate in this noble work. Not only is she a blood donation volunteer, she is also a recipient of such emergency blood units. “I myself used to be a patient who donated blood due to hemorrhage during childbirth. As a person who was saved by blood drops of volunteers, I understand more than anything the meaning of this act. As an officer Working in the medical industry, interacting with many patients standing on the border of life and death, I understand the importance of every drop of blood given,” Hang shared. Build a mobile blood store For Ms. Hang, voluntary blood donation is a noble gesture, not only saving the lives of patients but also giving blood donors a joy and happiness because they have done a very noble thing. : “A drop of blood gives, a life stays”. On average, she donates blood 2-3 times a year. As a volunteer, Ms. Hang has participated in many voluntary blood donation activities in Cao Bang province such as the Pink Spring Festival, Red Sunday; Red Journey Army Association and support blood donation points in 11 districts and cities. Besides voluntary blood donation, Hang and her Voluntary Blood Donor Club participate in blood donation campaigns, especially many times of emergency blood donation. The number of volunteers’ blood donations reached over 500 registrations and about 400 blood units were collected. Among the volunteers who were mobilized by her to donate blood were relatives, relatives, friends, colleagues, neighbors… Now, they themselves have become mobile “blood warehouses” that are always ready. response” whenever the patient needs it. They are not only volunteers but also propagandists, spreading good deeds to the community, so that every day the number of blood donors increases, the number of anemic patients decreases… Volunteering to become a “living blood bank” for patients, midwife Hang has shown a noble gesture, expressing the dedication, conscience and responsibility of medical staff. In 2021, Hoang Thi Hang is in the list of 100 typical blood donors honored nationwide.

Meanwhile, there is an inexhaustible source of energy, which is solar energy, which is being used in many constructions serving human life. The use of hot water by solar energy has also been implemented, but in unstable weather areas such as central provinces, especially Quang Binh, it is difficult to apply solar energy to generate electricity. Year-round hot water for daily living. Two children Dinh Thi Kim Oanh and Kaohsiung Cuong with the structural diagram of a solar water heater product. To solve this problem, Dinh Thi Kim Oanh, a student of class 12B and Kaohsiung Cuong, a student of class 12A, Trung Hoa Middle School and High School together with teacher Dinh Ngoc Trai researched and manufactured ordinary products. hot water by combining a solar water heater with an electric water heater. The principle of operation of this device is: the output of the solar water heater will be put through the inlet of the electric water heater, the output of the electric water heater will be brought down to the faucet. to use. The electricity supplied to the electric water heater is controlled by a controller with a temperature sensor. The temperature sensor head is located in the heart of the solar water heater. If the temperature in the solar water heater reaches 40 degrees Celsius or more (this temperature value can be adjusted), the controller will control the relay to disconnect the power to the electric water heater. At this time, hot water from the solar water heater flows through the electric water heater and flows down the faucet for use. If the temperature in the solar water heater is lower than 40 degrees Celsius, the controller will control the relay to power on the electric water heater. At this time, the water from the solar water heater flows through the electric water heater, here, the water will be heated to a certain temperature (depending on the user’s adjustment) and flows down the faucet for use. . The amount of electricity used to heat the water will be less because the water in the solar water heater itself is already heated more than normal water (during sunny days or hot temperatures). According to Kaohsiung, the outstanding advantage of this product is that it has come up with a solution to use solar water heaters in unstable rainy and sunny areas, namely the combination of using between the solar water heater and the electric water heater in a reasonable way. The power supply to the electric water heater is controlled to close and disconnect automatically on the basis of recognizing the water temperature in the solar water heater. This is the outstanding feature of the product, which helps to maximize the amount of electricity used to heat water. Without this automatic controller, according to habit, users will turn on the attomat to have hot water but forget that that day, it was sunny and there was hot water in the solar water heater. This habit will consume an unnecessary amount of power. But if there is this controller, the power supply for the electric water heater is fully automatic and scientific, depending on the water temperature in the solar water heater. Only when the temperature of the water in the solar water heater is too low (below 40 degrees Celsius), then the controller will output a signal to the relay to close the electric lock to supply power to the electric water heater. to boil water. Currently, the demand for hot water in daily life is very large. Therefore, in areas with erratic rainy and sunny weather that must use an electric water heater, the monthly electricity consumption is not small. But if installed in combination with another solar water heater, can significantly save monthly electricity consumption. According to the current quote, a 130l solar water heater (for a family of about 5 people) costs from 3.7 million VND, with a warranty of up to 5 years, a lifespan from 10 years to 15 years. The low initial cost but can be used for a long time and help consumers use hot water all year round without having to pay a lot of electricity bills is the obvious economic benefit of the project. Moreover, solar energy is a clean energy source that does not pollute the environment, therefore, if the product of the project is widely used, it will contribute to environmental protection. “We are very confident with this topic, because after completing the project, we were facilitated by our parents to install it right in our family to use. We are ready to support and guide the design and installation stages for families who need to use solar water heaters. Hopefully, our project will receive the investment of businesses to make products that are both technical and cheap to serve the needs of the people,” shared Dinh Thi Kim Oanh.

For the purpose of expanding photo reconnaissance capabilities to ensure combat operations, the US National Mapping and Photographic Reconnaissance Service is authorized to use images of the territory of Afghanistan taken by the commercial Ikones satellite, with high resolution. 1m resolution. The US military also has the right to use information received from the satellite system to explore the earth’s natural resources. These are Landsat-7, Terra, Orview satellites. Information from these satellites is used to establish, supplement and clarify topographic maps, to facilitate the assessment of the situation in the area of ​​combat operations. The figure shows the NAVSTAR navigation satellite system. Photo: britannica In this war, the United States decided to extend the use of the experimental satellite for opto-electronic imaging of the earth’s surface EO-1 belonging to the National Aeronautics and Space Administration (NASA) for the purpose of ensuring the integrity of the satellite. better for the US military. Thanks to this satellite, the US military has received images of the earth’s surface position with a resolution of 30m, allowing it to be used to assess the damage of the target, on the basis of comparing the multispectral images obtained to take pictures before and after taking the blows and to calm down on the need for repeat attacks. For radio reconnaissance satellites, the US uses 2 Acvakaid satellites (Magnum and Mentor types). These satellites allow the reception of radio communications, relay communications, convection, signals from satellites, signals of ballistic missiles, aircraft and vehicle control signals. unmanned flight. It is said that the Taliban use very modern means of mobile satellite communication. However, the American radio reconnaissance satellite allows to capture the communications between the Taliban commanders, to detect in time the location of the troops and their plans. Military communication satellites work with the greatest intensity, but only guarantee 40-60% of the requirements of the forces participating in the campaign. In the composition of this satellite cluster, there are 6 satellites of the DSCS strategic communication system, 3 satellites connected to the Mistar tactical and strategic communication network, 2 UFO-type satellites of the tactical-operational communication system. of the navy, air force and army, six satellites of the SDS transmission system. In addition, the US also uses satellites belonging to NASA systems to monitor and transmit TDSS information. Due to the sudden increase in the information traffic required to secure the operation, the United States had to make maximum use of space communication systems (compared to Operation Desert Storm, the traffic of information delivery increased by 7 times). Especially the Iridium mobile satellite communication system with 66 satellites operating in low orbit. This system ensures that the US military groups have enough communication channels connecting to the US Department of Defense’s digital information network (DISN) and ensures the communication system of the US state executive agencies, ensuring for the national telephone system and the Internet. The NAVSTAR navigation satellite system includes 24 satellites that ensure real-time navigation for US forces. The shortening of the adjustment time between satellites of the NAVSTAR system by the test measurement complexes of the US Air Force allows to improve the accuracy and determine the target coordinates for the use of technological weapons. high. In planning and conducting air strikes and missile strikes, the US military places particular emphasis on using information received from the satellites of the National Environmental Monitoring System (NPOESS). This system is used for weather forecasting, setting up global and regional meteorological maps for a period of 1 day to 2 weeks, allowing selection of information on cloud status, atmospheric pressure, etc. atmosphere and other parameters of near-Earth space. Meteorological satellites Block-5D2-8 and Block-5D3-1 are used with the highest intensity. The improvement of the operational efficiency of the NPOESS system allows to fully guarantee the US military units with meteorological information. In particular, the forecast of changes in solar activity has provided the ability to promptly correct the functions of communication, reconnaissance and navigation satellites, contributing to improving the efficiency of attacks and the detection of satellites. command the forces. To secure meteorological forecasts for navies, NASA’s Quicksat satellites are used to determine wind speed and direction over the ocean’s surface. Thus, during the war in Afghanistan, US satellite systems were used with high efficiency. At the same time, it also revealed some disadvantages, such as the lack of radar and opto-electronic reconnaissance satellites to timely orient the commander to use tactical forces. As a result, in some cases, commanders did not receive timely reconnaissance information. In addition, the satellite’s unobservable cycle over the combat area disrupted the monitoring of the movements of Taliban forces and vehicles.

Selected data on April 23 Tesla announced the accident vehicle data again late at night Tesla re-issued a document on the 22nd night, saying that it fully accepts the decisions of the State Administration of Market Supervision and the Zhengzhou City Market Supervision Administration, and does its best to actively cooperate with all relevant investigations, and earnestly fulfill its main responsibility for quality and safety, and provide consumers with High-quality and safe products and services. Tesla said that as of April 21 so far, it has provided complete driving data half an hour before the accident, and has proactively contacted relevant parties to communicate and report the relevant situation on many occasions. (China News Service) The torch relay of the Tokyo Olympics is now the first person infected with the new crown, a male police officer NHK reported on April 22 that the Tokyo Olympic Organizing Committee announced that a male police officer who had participated in the traffic control work of the Olympic torch in Xiangshan County on April 17 tested positive for the new crown. This is the first time a new crown-infected person has appeared among the staff of the Tokyo Olympic torch relay. The infected person is a male police officer in his 30s from the Transportation Department of the Takamatsu Kita Police Station. According to reports, during the course of his duty, the police officer did not have any contact with people along the torch relay. (Overseas Network) In the first quarter, Shanghai’s per capita income exceeded 20,000 yuan, and the per capita income of eight provinces exceeded the national level From the data point of view, in the first quarter of this year, the top ten provinces with per capita disposable income of residents were Shanghai, Beijing, Zhejiang, Jiangsu, Tianjin, Guangdong, Fujian, Shandong, Chongqing and Liaoning. Among them, the per capita disposable income of residents in the first eight provinces exceeds the national average, and these eight provinces all come from the eastern coastal areas. The per capita disposable income of Shanghai residents reached 21,548 yuan in the first quarter, making it the only province with more than 20,000 yuan. As Shanghai has a large number of multinational companies and financial institutions such as the Shanghai Stock Exchange, the headquarters economy, R&D and innovation are very prominent, which attracts a large number of talents, and these groups have higher incomes. (China Business News) The British government cuts 95% of aid to China, leaving 900,000 pounds Recently, British Foreign Minister Raab announced that in this fiscal year’s official development assistance funds, aid to China will be cut by 95%, leaving less than 1 million pounds. The Conservative Government has boldly stated that it will allocate 0.7% of the country’s income every year for international aid. According to the British “Mirror” report, due to the impact of the new crown natural disaster, the anti-epidemic “man-made disaster” and the economic shock of Brexit last year, this expenditure will be reduced to 0.5% this fiscal year. The US “Politician” News Network added that one-third of the UK’s official development assistance funds are still invested in the “Indo-Pacific” and South Asia. The aid funds to China will be cut by 95%, leaving 900,000 pounds (approximately 8.13 million yuan) to fund open society and human rights projects. Some netizens on Weibo ridiculed that the British aid is not as good as the one-year revenue of some Internet celebrity shops in Changsha. In July last year, the British Department of International Development announced that the British government directly and indirectly provided assistance to China of 71.6 million pounds in 2018. (Observer Network) South Korea imported kimchi in the first quarter from China Yonhap News Agency recently reported that the export value of kimchi in the first quarter of this year was 46.57 million U.S. dollars, breaking a single-season export record. Imports amounted to 38.5 million U.S. dollars, and the trade balance achieved a surplus of 8.068 million U.S. dollars, the highest since April 2009. According to reports, the export value of kimchi in the first quarter of this year increased by 54.3% year-on-year, and the import value increased by 7.4%. From the perspective of import and export volume, the export volume was 11,181 tons and the import volume was 67,940 tons. Exported kimchi was US$4,165 per ton, much higher than the US$567 of imported kimchi. All imported kimchi originates from China. From the perspective of the kimchi export market, exports to Japan were US$24.72 million, an increase of 67.9% year-on-year, exports to the US were US$8.46 million, an increase of 80.6%, and exports to Hong Kong were US$2.34 million, an increase of 50.3%. (Forbes Chinese website)