On the morning of February 22nd, Nanjing, Jiangsu Province ushered in the first snowfall in the Year of the Loong. At the same time, in the backyard of Nanjing Underwater World, a rescue work concerning the fate of the Yangtze finless porpoise, a national first-class protected wild animal, is under intense progress.

The staff took the injured finless porpoise out of the pool for treatment. Photo by our reporter Zhou Mengshuang

The treatment pool is surrounded by professional rescue teams and volunteers, whose eyes are fixed on the figure in the water-a wild injured finless porpoise found in the main stream of the Yangtze River. Three staff members gently lifted the finless porpoise out of the water with a special stretcher cloth and placed it on a padded treatment table. The waiting ambulance team quickly started the diagnosis and treatment work.

The ultrasonic probe glided slowly over the chest of the finless porpoise, and the sectional image of the finless porpoise viscera was clearly presented on the display screen. The portable X-ray machine is ready for further examination of the lesion; The blood drawing needle accurately pierces the blood vessel on the caudal fin of finless porpoise, and takes the blood sample needed for laboratory analysis; Not far away, the drip stand has been set up, and the medical staff are preparing anti-inflammatory drugs … While observing the data on the screen, the experts are whispering about the condition of the finless porpoise.

The Yangtze finless porpoise is undergoing ultrasound examination. Photo by our reporter Zhou Mengshuang

Where does this Yangtze finless porpoise come from? How did you get hurt?

On February 11th, the second day of the Lunar New Year, while Nanjing citizens were immersed in the festive atmosphere of the Spring Festival, the members of the photography team of the Nanjing finless porpoise Aquatic Biological Protection Association still stuck to the coastline of the Yangtze River to photograph and monitor the Yangtze finless porpoise. "In the afternoon, a team member sent a group of worrying photos of the finless porpoise to the work group. In the picture, the tail of the finless porpoise was scarred and attached with a large number of abnormal vegetation, and there were some traces of entanglement on it. We judged that the injury was likely to threaten the life of the finless porpoise and immediately reported the relevant situation to the Nanjing Yangtze finless porpoise provincial nature reserve management station. " Jiang Meng, secretary general of the Nanjing finless porpoise aquatic biology protection association, said.

The Yangtze finless porpoise is undergoing X-ray examination. Our reporter Zhou Mengshuang photo

A rescue against time began. On February 13th, Nanjing Municipal Bureau of Greening and Landscape Architecture organized experts to hold an emergency meeting to judge the injury and rescue plan of finless porpoise, and entrusted the Freshwater Fisheries Research Center of Chinese Academy of Fishery Sciences to organize and implement the search and rescue mission of injured finless porpoise. On the evening of February 15th, six scientific research and monitoring vessels and more than 50 professional ambulance crews from two provinces and three places were assembled in place. On the morning of February 16th, the search and rescue fleet was dispatched decisively, and the injured finless porpoise was successfully searched and rescued on board at 11: 15 that morning.

"The hydrological conditions in the main stream of the Yangtze River are complex, and there are many navigable ships. It is very difficult to catch and rescue the Yangtze finless porpoise. The rescue process requires the skilled cooperation of many ships and the combination of various nets. Thanks to the work experience accumulated by our normalized finless porpoise rescue and emergency drills, this fishing and rescue operation was very smooth, and it was the first successful case in China to carry out active fishing and rescue for injured finless porpoises in the mainstream of the Yangtze River. " Liu Kai, a researcher at the Freshwater Fisheries Research Center of the Chinese Academy of Fishery Sciences, said.

The Yangtze finless porpoise is active in the treatment pool. Photo by our reporter Zhou Mengshuang

After examination, it was confirmed that the injured finless porpoise was female, aged about 5 years. The initial diagnosis of the injury was that the tail fin and tail stalk were infected by debris, and there were 5 hyperplastic tissues, and the lungs were infected to some extent, which was serious. As of February 22, the injured finless porpoise has received the first-stage emergency treatment for 6 days, and whether the treatment work is effective or not affects the hearts of everyone in the team.

"Blood tests show that the immune function of finless porpoise has recovered, and the symptoms of anemia have improved significantly, but there are still infections; Image examination showed that the lung inflammation of finless porpoise was initially controlled. The ulcerated lesions on the body surface are gradually healing, and the symptoms of suppuration basically disappear … "At noon on February 22, Liu Kai took the test report that had just been released, and his brow, which had been tight for several days, gradually stretched out. "Although the phased results have been achieved, we can’t take it lightly! The rescue of cetaceans and dolphins is a worldwide problem. In particular, there are few cases of diagnosis and treatment of injured finless porpoises. We must further rely on the collective strength of the treatment team to optimize the treatment and nursing plan and do our best to help finless porpoises recover as soon as possible. " Liu Kai said.

Medical staff are taking blood samples from the Yangtze finless porpoise. Photo by our reporter Zhou Mengshuang

Jiang Meng also breathed a sigh of relief after receiving the news that the Yangtze finless porpoise was in stable condition. "Come on, I’ll take you to the active section of the Yangtze finless porpoise, which is in the main city of Nanjing!"

After coming to the Yangtze River Smile Station near the Gulou River in Nanjing, in just 10 minutes, the reporter saw more than a dozen finless porpoises coming out of the water for air. Their smart figures jumped on the river as if dancing with snowflakes. "Nanjing has a history of more than 3,000 years, and it has been a neighbor of the Yangtze finless porpoise for more than 3,000 years. It is our responsibility to protect them. At this time, there are many female dolphins pregnant in October in the river, and they are feeding their offspring in this rushing river, and they are endless! " Jiang Meng’s words are full of power along the Yangtze River in the heavy snow.

(Guangming Daily full media reporter Zhou Mengshuang)

Original title: "The finless porpoise is in distress, and life and death rescue is staged here! 》

Read the original text

　　I think so in autumn in Zhenjiang. The wind blows at first, and the sky is slightly cool. The dry and docile autumn wind comes slowly, gently washing away the summer heat and manic depression, and bringing a little osmanthus fragrance.

　　Slow down and feel autumn with your heart. People often say that spring is sultry and autumn is pleasant. This "palette"-like season, just a few places, is enough to surprise the new people and make the old people linger.

　　Jiao Shan

　　Opening hours: 07:30— At 17: 30 and 16: 15, the park was closed.

　　Address: Dongwu Road, Jingkou District, Zhenjiang, Jiangsu

　　October is the golden season, not only with elegant ginkgo on the branches, but also with sweet-scented osmanthus in the streets. It seems that time has slowed down in this sweet smell.

Via@ 京京京京京京京京京京 ujs

　　The autumn rain with a slight chill washed away the fine dust and faded the autumn dryness, and the sweet-scented osmanthus in Jiao Shan bloomed in this thorough season.

　　From the leaves that are still thick green, golden buds stick out, but the fragrance is not as low-key as flowers, and you can smell it before you get close. Bow your head and listen carefully, and it seems that you can hear a soft, "bam" sound, which is the cheer of Gui, happy to finally come to this world.

Via@ 京京京京京京京京京京 ujs

　　Jinshan Hill

　　Opening hours: 08:00— At 17: 00 and 16: 30, the park is closed.

　　Address: No.62 Jinshan Road, Runzhou District, Zhenjiang, Jiangsu.

　　It is said that the autumn is crisp, and it seems that the sky will always have the magic that people yearn for. Sometimes, when you suddenly lift your eyes, you can’t move your eyes.

　　There is a kind of blue called "Jinshan Blue".

Via@ basil Roger

　　The sky washed by autumn rain is clear and bright, as if within reach, and thin clouds are floating in the air, reflecting the water, as in a painting.

Via@ basil Roger

　　Mi Fei Calligraphy Park

　　Opening hours: 08:30— At 17: 00 and 16: 30, the park is closed.

　　Address: No.6 Mi Fei Road, Dantu District, Zhenjiang, Jiangsu.

　　Do you think this is just a park in memory of calligrapher Mi Fei? Then you are wrong.

　　Mi Fei lived in Dantu for forty years, leaving us not only exquisite calligraphy, but also his beloved Zhenjiang landscape. If it weren’t for great love, how could Mi Fei, who advocates chic and nature, live in a place for such a long time? — — The beautiful landscape of Zhenjiang has retained the uninhibited soul.

　　The sunshine in autumn is neither gentle and lovely in spring nor unrestrained in summer, but only quiet and elegant. Here, you can feel this unique tranquility, coupled with the early autumn breeze, walking in the park, bathing in the calligraphy culture and feeling the natural beauty of autumn, which is definitely a "online celebrity punch card" holy place!

　　Fu re Hua hai manor

　　Opening hours: 08:30— At 17: 00 and 16: 30, the park is closed.

　　Address: Fure Flower Sea, baitu Central Village, jurong city, Zhenjiang, Jiangsu.

　　Who says the word autumn can only be combined with bumper harvest and food? Jurong baitu’s Fure Flower Sea Manor allows you to enter the spring in a second and feel the beautiful flowers.

　　Nowadays, the Fure Flower Sea is a paradise full of intoxicating scenery. Overlooking the sea of flowers, it is gorgeous, and when the flowers are all in full bloom, there will be a wonderful feeling of the sea of flowers in small Hokkaido.

　　Zhiying townlet fendaigu

　　Opening hours: 08:30— At 17: 30 and 17: 30, the park is closed.

　　Address: Jinshan Village, Tianwang Town, jurong city, Zhenjiang, Jiangsu

　　Zhiying Town can be said to be the last pink world in this autumn!

　　The pink here is layered, and the cherry blossoms of different colors are spread all over the mountains and under the mountains, and the pink spikes like smoke bloom halfway up the mountain. A sea of pink flowers all over the mountain, a pink girl’s heart. Come here and feel a beautiful dream world.

　　Shiyezhou

　　Opening hours: 09:00— five o’clock pm

　　Address: Shiye Town, Dantu District, Zhenjiang, Jiangsu Province

　　Don’t forget to take your children to enjoy picking while you are traveling! Autumn is the season when "fig" matures. It tastes fragrant and has many benefits for people.

　　Pick figs in the next world! Fresh organically grown figs, take a bite, fresh and juicy, refreshing. Bring your children and family here to punch in. You can not only experience the fun of farmer picking, but also feel the fresh air and pure river water in Shiyezhou, and feel the beauty brought by autumn together.

　　Take a walk in Zhenjiang in autumn. There are fragrant osmanthus rain, blooming flowers and the most beautiful appearance in this season.

　　[PConline information]In summer, the most comfortable thing is to play with your mobile phone while eating watermelon in an air-conditioned room. In the big summer, such a hot summer, my life is definitely given by air conditioning. But as we all know, if you want to enjoy it, you have to pay. The biggest power consumption in summer is also air conditioning. Usually, the electricity bill in July and August is just a few hundred dollars. Whenever I receive the electricity bill, I always feel that the cost of continuing my life in summer is really high. Does the power consumption of air conditioners have to be so large? As the saying goes, many a mickle makes a mickle. Is there any clever way to save electricity?

　　Working principle of air conditioner

　　Refrigeration is the most commonly used air conditioner. After the air conditioner is powered on, the low-pressure vapor in the refrigerant in the refrigeration system in the air conditioner will be sucked by the compressor and compressed into high-pressure vapor, which will be discharged to the condenser. The outdoor air sucked by the axial flow fan will flow through the condenser, so that the high-pressure refrigerant vapor will be condensed into high-pressure liquid, which will be sprayed into the evaporator after passing through the filter and throttling mechanism, and will evaporate at the corresponding low pressure to absorb the surrounding heat, so that the indoor air will continuously circulate and flow, thus achieving the purpose of reducing the temperature.　　　　

　　Frequent switching consumes electricity instead.

　　Some people may think that it costs electricity to keep the air conditioner on, so they turn it off when it is not hot, thinking that the purpose of saving electricity can be achieved by constantly turning it on and off, but in fact it may cost more electricity. Because the power required by the compressor inside the air conditioner is very large when it is started, it is generally about 4 or 5 times higher than the normal working current. As a result, it will naturally cost more electricity to switch the air conditioner on and off frequently. In addition, it is easy to burn out the compressor if the air conditioner is turned on and off frequently.

　　Small coup of saving electricity in life

　　1. Unplug the air conditioner when it is not in use, because as long as it is plugged in, the air conditioner will consume electricity. Although the power consumption is not much, its power consumption cannot be ignored over time.

　　2. Turn on the air conditioner in summer, and don’t pursue too low a temperature, which not only consumes more electricity, but also easily causes symptoms such as colds. According to scientific data, the most suitable temperature for human body in air-conditioned room is 26℃~28℃, which can not only make people feel cool, but also make them more comfortable and save electricity.

　　3. If you go out for a short time, usually within an hour, there is no need to turn off the air conditioner, because as mentioned above, it is more electricity-consuming to switch the air conditioner at high frequency.

　　4. When cooling, the air outlet of the air conditioner is upward, because the cold air flow is heavier than air and will sink, so the cooling efficiency will be more obvious when the air outlet is upward.

　　5. When sleeping at night, choose the sleep mode that comes with the air conditioner. Generally, the air conditioner sleep mode will make the machine run in a low power state, which will not only make the noise less, but also make the sleep more comfortable with proper air volume.

　　6. In an air-conditioned room, the air temperature is low. At this time, with an electric fan, the cooling effect will be better. Because the power of the fan is far less than that of the air conditioner, and the fan can stir the air, making people feel cool. The air conditioner makes the indoor air cool, and the coolness is more obvious after being matched with an electric fan, so that the temperature of the air conditioner can be raised, which is more comfortable and saves electricity.

　　7. When installing the outdoor air conditioner, we should also avoid it being exposed to direct sunlight, because the outdoor air conditioner will radiate heat into the ambient air in summer, and the direct sunlight will increase the difficulty of heat loss, and the cooling effect of the air conditioner will become worse. If conditions are limited, we can install a sunshade. Try to choose thicker curtains indoors, and then close them, which can also reduce the loss of chill.

　　8. The last point is to clean the air conditioner regularly. Because of the long-term use of the air conditioner, the internal filter screen of the air conditioner will be covered with pollutants such as dust, and in serious cases, bacteria, mites and Legionella will also breed. It will not only block the vent, which will reduce the refrigeration efficiency, but also affect our breathing health. It is best to clean it once every half a month or once a month when using it at ordinary times.

　　Learn these tips, I believe we can save a lot of electricity bills, and use air conditioners correctly, which is environmentally friendly and saves electricity. Why not? Of course, it is really pleasant to stay in an air-conditioned room in summer, and everyone should pay attention to controlling the time. When the temperature is not high every morning and evening, opening the window for a few hours will help everyone’s health.

Beijing, China, November 30 (Reporter Lei Yan) Recently, it has been said that drinking pure water for a long time will lead to calcium deficiency, acid constitution and decreased immunity. Is that really the case? The scientific gossip list guided by Beijing Science and Technology Association, Beijing Municipal Committee Network Information Office and Capital Internet Association gives the truth.

Purified water is treated by many complicated processes, and there are almost no impurities such as minerals and microorganisms in it. But because it is too pure, many people worry that it is not good for their health.

This paper introduces that drinking pure water for a long time will not lack minerals, and will not get rickets. The minerals of human body are mainly supplied by food, and the elements such as calcium and magnesium in fruits, vegetables, meat and grains are very rich. Nutrition can be guaranteed as long as the daily diet is balanced.

In addition, drinking pure water will not make the body fluid sour, because the human body has a powerful acid-base balance adjustment system, and respiratory, urinary and body fluid buffer substances will take care of everything. Pure water is neutral, so don’t worry about it unless there are special circumstances such as severe kidney disease.

Drinking pure water will not lead to nutrient loss and reduce immunity. Immunity depends on heredity, lifestyle, exercise and vaccine. Purified water removes harmful substances, but it also reduces the risk of disease caused by drinking water. Whether it is pure water or mineral water, you can safely drink it as long as it meets the national standards.

　　Cctv newsAccording to the Circular on Insurance Consumption Complaints in the First Quarter of 2021 published by China Banking and Insurance Regulatory Commission, China on the 26th, in this quarter, China Banking and Insurance Regulatory Commission and its dispatched offices received and forwarded 37,892 insurance consumption complaints involving insurance companies, up 129.73% year-on-year.

　　Among them, 15,539 property insurance companies were involved, up 83.20% year-on-year, accounting for 41.01% of the total complaints; There were 22,353 life insurance companies, up 178.99% year-on-year, accounting for 58.99% of the total complaints. The complaints of PICC P&C Insurance, Ping An P&C Insurance and Pacific P&C Insurance rank among the top three property insurance companies. The number of complaints in Ping An Life Insurance Company of China ranks first among life insurance companies.

　　According to the Circular, in the first quarter of 2021, the median number of complaints about 100 million yuan premium of property insurance companies was 6.14 pieces/100 million yuan, and the median number of complaints about 10,000 policies was 0.49 pieces/10,000 pieces; The median number of complaints about 100 million yuan premium of life insurance companies is 1.43/100 million yuan, the median number of complaints about 10,000 policies is 0.26/10,000, and the median number of complaints about 10,000 people is 0.09/10,000.

　　Yi ‘an Property & Casualty ranked first among property insurance companies in terms of the complaint volume of 100 million yuan premium. Sunshine Agricultural Insurance and Jiulong Property Insurance are among the top two property insurance companies in terms of complaints about 10,000 policies. Hua Hui Life ranked first among life insurance companies in terms of complaints about 100 million yuan premium. Hua Hui Life ranked first among life insurance companies in the number of complaints about 10,000 policies. Hua Hui Life Insurance and Dingcheng Life Insurance ranked in the top two among life insurance companies.

　　Judging from the main types of insurance involved in complaints, property insurance companies have 8561 complaints about motor vehicle insurance disputes, accounting for 55.09% of the total complaints of property insurance companies; There were 2508 complaints about insurance disputes, accounting for 16.14%. PICC P&C Insurance, Ping An P&C Insurance and Pacific P&C Insurance ranked among the top three property insurance companies. Ping An Property Insurance and PICC Property Insurance ranked in the top two among property insurance companies.

　　Among the complaints involving life insurance companies, there are 9184 complaints about ordinary life insurance disputes, accounting for 41.09% of the total complaints of life insurance companies; There were 4600 complaints about sickness insurance disputes, accounting for 20.58%. Ping An Life Insurance Company of China ranks first among life insurance companies in terms of the number of complaints about ordinary life insurance disputes and the number of complaints about sickness insurance disputes.

The US military in Syria has been in trouble recently. In the US-controlled area of dayr az zawr in northern Syria, the fighting between Arab tribes and Kurdish armed forces, both allies of the US military, has lasted for more than 20 days, resulting in more than 190 deaths. Although the U.S. military urged the two sides to cease fire and asked them to go to a U.S. military base called Al-Omer for negotiations, the fighting did not stop because of the intervention of the U.S. military. At present, the military conflict has spread to Aleppo, another province in northern Syria. The fierce fighting has seriously affected the food supply of people in the region, and some people even fled to Iraq to escape the fighting.

The differentiated military assistance of the US military has buried hidden dangers of conflict.

The conflict between Arab tribes and Kurdish armed forces in dayr az zawr has a long history. Although they jointly oppose the Syrian government and support the US military occupation of the area east of the Euphrates River in dayr az zawr, the differentiated military assistance of the US military has laid a hidden danger of conflict.

In 2015, the United States joined hands with Kurdish armed forces to control the northeast of Syria. However, after the failure to overthrow the Syrian government, the United States turned to seek to split Syria, and favored the Kurds’ demands for independence. The Kurds in dayr az zawr gradually became the most loyal regional agents of the US military. The U.S. military provided them with heavy weapons, assisted in the establishment of military schools, and carried out technical training such as special forces and field assault, which finally enabled the Kurds to organize a relatively formal military force.

In contrast, although the Arab tribes in this area have the same goal as the United States in overthrowing the Syrian government, they do not pursue independence, and the US military has therefore implemented "limited military assistance" to them. Arab tribes can only get light weapons, and lack formal military training, and have never established formal armed forces.

With such military assistance, there are more than 10,000 Kurdish armed men in dayr az zawr, while the Arab tribes are "only" about 1,100. Paradoxically, the population of Arab tribes in dayr az zawr is as high as 95%, and the rise of Kurdish armed forces makes Arab tribes constantly complain that their territorial security is threatened.

Long-term accumulation of powder kegs is inevitable. The fuse of the latest round of conflict is that Kurdish armed forces detained a leader of the Arab tribe. In late August, the Kurdish armed forces invited Ahmed Khabir, the leader of the Arab tribe "Arab Committee", to the area controlled by the former, but Khabir was arrested by the Kurdish armed forces on charges of "treason" and "liaising with the Syrian government" as soon as he arrived. This move aroused the anger of all Arab tribes in dayr az zawr. They demanded that the Kurdish armed forces release Khabir within 12 hours, or they would launch an attack, which was flatly rejected by the Kurdish armed forces, and the conflict broke out.

The US military’s slow mediation is called mediation, but it is actually biased.

The fighting between Kurdish armed forces and Arab tribes is extremely fierce. The conflict on September 2 alone caused more than 50 casualties. As a common ally of the two countries, the US military chose to watch the fire from the other side of the bank, and said that the US military would stop patrolling the area because of the deteriorating security situation. In this regard, the article published by the Syrian independent newspaper "Motherland" on the same day hit the nail on the head. "The US military will intervene after waiting for the warring parties to be exhausted, so as to consolidate its important position in this region." The article stated that the US military tried to weaken the strength of both sides of the conflict by maintaining apparent neutrality. On the one hand, it supported the military actions of Kurdish armed forces, and on the other hand, it announced its support for Arab tribes to regain the rights deprived by Kurdish armed forces.

△ US troops stationed in Syria (Source: local media)

After many days, the US military finally launched "mediation" on September 5, inviting both sides of the conflict to negotiate in the American military base in Omer, Aleppo. The Kurds immediately responded positively, but the Arab tribes only sent a low-level representative and expressed concern that they would be ambushed or arrested again. The negotiations between the two sides soon broke down. Syrian political expert Mahin commented that this is a "doomed failure" negotiation. He pointed out that the US military did not openly exert any pressure on the Kurdish armed forces in releasing the arrested Arab tribal leaders, and the US military should ask the Kurdish armed forces to release the Arab tribal leaders first, and then hold talks.

The US military continues to steal oil in Syria, and the uneven distribution of spoils promotes the continuation of the conflict.

Dayr az zawr, known as the oil and gas basket of Syria, has about 80% oil reserves in Syria. After the US military seized the area east of the Euphrates River from the Syrian government, it meant occupying almost all the oil fields in the province. They set up bases around oil fields to ensure the "smooth" stealing of Syrian oil resources, and most of the oil proceeds flow to the US military to pay for its high military expenditure costs in Syria, while the other part flows to Kurdish armed forces. However, as an ally of the US military, the Arab tribes, like all Syrians in government-controlled areas, watch the oil being transported abroad, but they have to bear the high gasoline and diesel costs caused by the US economic sanctions policy in their lives.

An article published in "Motherland" commented, "The Arab tribes in Deir ez-Zor account for the majority of the local population, but only have very few in the region.smallPart of the wealth. Under the threat of Kurdish armed forces, the leaders of Arab tribes can’t even enjoy a decent position. It is for this reason that Arab tribal leader Ibrahim Afler recently called for the continuation of actions against Kurdish armed forces. Yusuf Lifar, a Syrian military expert, pointed out that tribal fighters are usually good at ambushes and covert operations, and now they choose to attack Kurdish armed forces head-on, showing the determination of Arab tribes. The presence of the US military has aggravated the unprecedented internal turmoil in dayr az zawr and plunged itself into a conflict that may not end soon.

From overthrowing the legitimate government to splitting the territory, the US military has done everything in Syria, and it seems that such means have not stopped. According to a recent report in Syria’s Fuxing Daily, the US military is in contact with the Druze people in Suweida province, Syria, trying to incite them to rebel against the government’s rule and finally seek independence. The root of Deir ez-Zor’s bloody turmoil is that the United States wantonly tramples on other countries’ sovereignty and interferes in other countries’ internal affairs, and such acts will eventually make it suffer the consequences.

Producer Mu Muli

Producer Zhang Yuchen?

Reporter Wang Weiwei

The epidemic resumed, and many places turned to the online class mode. In the face of unfamiliar and familiar online classes, today I have compiled a practical online learning strategy for children who study online at home.

Student article

a workman must first sharpen his tools if he is to do his work well

A tidy desk

A tidy desk can effectively avoid distractions in class, and clean up things unrelated to study on the desk to other places, leaving only the electronic equipment needed for online classes.

Place the water cup.

Don’t forget to replenish water during the online class. Choose a favorite water cup, fill it with water and put it at the corner of the table, which can also increase the number of drinks invisibly.

Timed alarm clock

Equipping yourself with an electronic clock during your study can better plan and manage your time.

Quiet environment

Quiet environment is also very important. Headphones are a good choice, which can not only reduce external interference, but also prevent interference with others.

Comfortable seating

For the sedentary students’ party, a soft seat cushion with Q-bomb can relieve the waist pain due to lack of exercise.

The correct way to open online courses

Prepare in advance

Contact the teacher in advance about the platform and mode of class to ensure the smooth development of online learning.

correct attitude

Online class is also a class, so you can get twice the result with half the effort by observing PPT with your eyes and listening to the teacher, carefully remembering your hands and correcting your learning attitude.

Record carefully.

Make every note carefully. Taking notes in class is the most beneficial method to concentrate, and at the same time, taking notes is also an important weapon for final review.

Ask positive questions

Online class is both a challenge and an opportunity. We can listen to the questions we don’t understand again and again. If we still don’t understand, we can also ask the teacher for help online.

Scientific and healthy online learning

protect eyes

Choose electronic products scientifically. Try to choose electronic products with large screens, and suggest the priority order: projector > computer > tablet > mobile phone. Choose electronic products with high resolution to reduce eye discomfort and fatigue.

Avoid staring at electronic products for a long time. The shorter the continuous use of electronic products, the better. It is recommended to look up at the distance for more than 20 seconds after watching the screen for 20 minutes.

Maintain correct viewing posture and reading and writing posture. When watching the computer, the distance between the eyes and the computer screen should be not less than 50cm, and the eyes should look down slightly. When reading and writing, keep the "three ones". Keep your hands one inch away from the pen tip, your eyes one foot away from the book and your chest one punch away from the desk.

Insist on eye exercises

Adhere to eye exercises twice a day, once in the morning and once in the afternoon. It is best to do eye exercises seriously after continuous use of eyes, so that eyes can get sufficient rest, and wash hands before doing eye exercises.

Appropriate exercise

Children and teenagers’ home exercise program, parents can also practice together!

Sensitive coordination, cardio-pulmonary endurance exercises

1. Run around two o’clock

Put two mineral water bottles, and the distance between the two water bottles can be controlled according to the situation. Let the child use the sideslip step to move quickly between the two water bottles. 10-20 times.

2. Run in the same place

Hands and feet are supported on the ground, and legs are pushed back and forth quickly. The frequency of action is based on your own situation. The faster the frequency, the greater the intensity. Continue for 30 seconds.

Step 3 run in small steps

Run fast in small steps in the same place, swing your arms and pace as fast as possible, and continue for 30 seconds.

Balance exercise

Step 1 catch the ball with one foot

Stand on the ground with one foot, keep your body balanced, and catch the ball (tennis, etc.) thrown by your parents with your hands.

2. Jump one-legged station

Take off with both legs and stand firm with one leg on the ground. After landing, the knee joint is slightly bent. Alternately on both sides, 5 times on each leg.

Step 3 turn and jump on one leg

Stand on one leg, take off and turn 90 degrees in the air, then land on one leg and stand firm. Bilateral legs alternately, 5 times on each side.

Strength exercise

1. Two-legged back bridge

Lie on your back on the ground, bend your knees 90 degrees, and lift your lower back off the ground with lower limbs for 10-15 times.

Step 2 crouch against the wall

Back against the wall, bend your hips and knees, and keep your knees at 90 degrees. At the same time, pay attention to the fact that your knees can’t exceed your toes. According to your own situation, you can reduce the difficulty by adjusting the angle of your knees. Lasts 30-60 seconds.

Step 3 lunge and squat

Stand your legs forward and backward in a lunge, with the front leg crouched to 90 degrees and the back leg flexed, but don’t touch the ground. Bilateral alternating, 5-10 times on each side.

Step 4 walk forward and backward.

Bend your hips and knees, keep your back straight, and walk back and forth while keeping the flexion angle of your hips and knees unchanged. Continue for 60 seconds.

Step 5 standard squat

Keep your hands shoulder width apart, bend your hips and knees and squat down to the knee joint at 90 degrees. Pay attention to the center of gravity between your legs, and the knee joint should not exceed your toes and waist and back. 10-15 times.

Flexibility exercise

Step 1 walk with your hands and feet

Stand, lean forward, walk with your hands on the ground in a small range, and keep your body straight until you reach the maximum range. Then, the forefoot hits the ground, and walks forward quickly in small steps, reaching the maximum range while keeping the knee joint straight. 6-8 times.

2. hamstring muscle drafting

Sit with one leg straight and the other leg flexed near the knee joint. Keep your back straight and your knee joint straight, and use your abdomen to touch the knee joint forward. Lasting for 30-60 seconds, and alternating for 2-3 times.

3. Shoulder flexibility

Stand, with one hand from the top of your head and the other hand downward, and try your best to touch each other enough. Be careful not to use too much force in the process of touching enough to prevent your body from being distorted. Bilateral alternating, 6-8 times.

Adequate sleep and nutrition

Ensure more than 8 hours of sleep every day, and it is best to arrange more than half an hour of sleep in the afternoon. Don’t stay up late.

Secondly, we should have a reasonable diet, balanced nutrition, pay attention to ensuring three meals a day, especially breakfast, mix meat and vegetables, avoid overeating, and be careful not to change the usual diet structure too much.

Of course, in the process of online learning, most students will encounter similar problems: poor self-control, improper time management, no goal and no motivation, etc., which will all lead to low learning efficiency and be in a stalemate of learning badly and playing badly, thus bringing us some psychological anxiety or anxiety, which will affect our daily life and study for a long time.

At this time, parents should remember to help their children adjust their mood in various ways.

Parental articles

Care about accompanying children

Good parent-child relationship is the lubricant and foundation for solving problems. Parents should be "bosom friends" of their children, tolerate, appreciate and encourage their children, and carry out more meaningful parent-child activities, such as parent-child reading, parent-child knowledge contest, parent-child games, paying attention to current political programs, watching inspirational movies and TV programs together, etc., which can not only enhance feelings, adjust the mood of homebody, let them feel the warmth of family and the happiness of companionship, but also understand the responsibility.

Escort children

The first is to create a learning atmosphere. Try to arrange for children to complete online learning in a quiet venue; Check the learning hardware facilities in advance, set the computer system to child safety mode, try to use a system that can intercept advertisements, uninstall programs and software that may have adverse effects, and control the time of using electronic products.

The second is to enhance learning awareness. Download and print the online learning schedule in advance, set the alarm clock 15 minutes in advance to help children prepare school supplies; Dress neatly and enter the online learning venue; Use the alarm clock to prompt "class" and "class is over".

Guide children to learn to learn.

Parents should urge their children to make a good plan, print and post schedules and classes, and intuitively remind them to enter the learning state on time as planned. Guide children to develop good habits of online learning, such as previewing, taking notes, consolidating and reviewing after class, etc. Guide children to learn to use resources, such as mastering and consolidating knowledge points by replaying courses; Communicate with the teacher in time through "online Q&A" and give feedback.

Original title: "The epidemic is repeated, please accept this online class guide! 》

Read the original text

In 2018, the main leaders’ forum in the Yangtze River Delta region was held in Shanghai on June 1.

The Yangtze River Delta signed a number of heavy cooperation projects.

On June 1, the symposium of the main leaders of the Yangtze River Delta region was held in Shanghai. At the signing ceremony held with the meeting, the departments of Shanghai, Jiangsu, Anhui and Zhejiang provinces, a municipal government and related enterprises jointly signed 11 projects, covering environmental credit, infrastructure, informationization, regional cooperation, commerce, industry, people’s livelihood services and other fields.

The following are the main contents of each project:

1. The establishment of the Yangtze River Delta integrated development investment fund cooperation framework agreement.

Main contents: The three provinces and one municipal government jointly launched the Yangtze River Delta Integrated Development Investment Fund with relevant financial institutions, focusing on cross-regional major infrastructure, ecological environment management and other fields, and giving full play to the fund’s role in promoting integrated development.

Signed by: executive deputy provincial (municipal) directors of three provinces and one city.

2. The strategic cooperation framework agreement of 5G in the Yangtze River Delta to lead the development of digital economy.

Main contents: The three provinces and one city will carry out joint action of 5G’s first trial and first use, jointly promote 5G field technology test and 5G network layout, strengthen demonstration cooperation of 5G comprehensive application in the fields of edge computing, Internet of Things, smart transportation, smart parks, etc., and jointly ensure network information security, speed up the construction of a new generation of information infrastructure, and promote the first development of digital economy in the Yangtze River Delta urban agglomeration.

Signatories: heads of information departments in three provinces and one city, and general managers of China Mobile, China Telecom, China Unicom and Tower Company.

3. Memorandum of Cooperation on Joint Credit Reward and Punishment in Environmental Protection in the Yangtze River Delta Region

Main contents: Based on the construction of the Yangtze River Delta regional credit cooperation demonstration zone, we will strengthen cooperation in the aspects of mutual recognition of judgment criteria for dishonesty, the establishment of data collection and sharing mechanism, and the landing of joint disciplinary measures, and take the lead in exploring the formation of a cross-regional credit joint reward and punishment model in China to comprehensively improve the credit level in the environmental protection field in the Yangtze River Delta region.

Signed by: principal responsible persons of credit departments and environmental protection departments in three provinces and one city.

4. Cooperation Framework Agreement on Opening Inter-provincial Broken Roads in the Yangtze River Delta Region

Main contents: The three provinces and one city have reached a consensus on the principles, contents, forms and mechanisms of cooperation around opening up the inter-provincial broken road cooperation, and clearly opened up the first batch of 17 key construction projects of the inter-provincial broken road.

Signed by: principal responsible persons of transportation departments in three provinces and one city.

5. Strategic Cooperation Agreement on Building G60 Science and Technology Corridor in Yangtze River Delta Region

Main contents: Relying on G60 Expressway and Shanghai-Suzhou-Huxuan High-speed Railway, deepen the layout of industrial clusters in G60 Science and Technology Corridor, strengthen infrastructure interconnection, promote collaborative innovation, promote deep cooperation and integration of industry and finance in brand parks, promote the reform results of "zero distance" comprehensive examination and approval system in G60 Science and Technology Corridor, and build a collaborative and integrated development platform with unique brand advantages in the Yangtze River Delta region.

Signed by: Party Secretaries of Songjiang, Jiaxing, Hangzhou, Jinhua, Suzhou, Huzhou, Xuancheng, Wuhu and Hefei.

6. The Yangtze River Delta region to promote "artificial intelligence+court" deep strategic cooperation framework agreement.

Main contents: Relying on the technical strength of Iflytek, the courts of three provinces and one city jointly support the exploration of the application of artificial intelligence in criminal trial process, deepen the application of artificial intelligence in judicial trial process, and expand the application of big data technology in the judicial field.

Signed by: Vice President of the Higher People’s Court of three provinces and one city, and Chairman Iflytek.

7. Letter of Intent for Cooperation in Scanning Code and Convenient Access of -Nanjing-Hangzhou-Hefei Rail Transit

Main contents: Relying on the technical advantages of Ant Financial’s mobile products, it can realize the convenient passage of passenger rail transit in Shanghai, Hangzhou, Nanjing and Hefei.

Signed by: Chairman of Shanghai Shentong Metro, Hangzhou Metro, Nanjing Metro and Hefei Urban Rail Transit, and Chairman of Ant Financial.

8. Framework Agreement on Promoting the Cooperation of internet plus Medical Association in the Yangtze River Delta Region.

Main contents: Based on the existing hospital platform, with Tencent Internet information technology and social products as the link, relevant hospitals in Shanghai, Jiangsu, Zhejiang and Anhui use electronic health cards to ensure the information sharing of patient-related electronic medical records among visiting hospitals through blockchain encryption transmission and other technical means; Through artificial intelligence images, WeChat medical insurance payment, personal health records and other services, we will promote medical business collaboration and graded diagnosis and treatment to achieve seamless referral.

Signatories: Dean of Shanghai First People’s Hospital, jiangsu province hospital, Zhejiang Provincial People’s Hospital, Anhui Provincial Hospital, and Vice President of Tencent Group.

9. Cooperation Agreement for the Yangtze River Delta Region to coordinate the service guarantee of China International Import Expo.

Main contents: Start the "Moat Around Shanghai" campaign, build a "6-day +365-day" perennial trading platform, promote the convenience of customs clearance of exhibition commodities, strengthen the linkage with brand exhibitions, create the brand project of business travel and culture in the Yangtze River Delta, carry out economic and trade docking activities, cooperate to deepen the data mining of import fairs, and promote the formation of a joint development mechanism of business opportunities.

Signed by: principal responsible persons of commercial departments in three provinces and one city.

10. Framework Agreement on Strategic Cooperation for Promoting Industrial Internet Platform Cluster Linkage in the Yangtze River Delta Region

Main contents: Three provinces and one city strengthen cooperation in cross-industry and cross-domain platforms, identification analysis service system, service system and service resource pool, network security system, application and mutual trust, and integrated ecology, and take the lead in building a regional industrial Internet platform cluster in China, transforming massive industrial data resources into efficient production and high-quality innovation.

Signatories: President of China Information and Communication Research Institute, General Manager of intelligent cloud Branch Information Technology Co., Ltd., Jiangsu Xugong Information Technology Co., Ltd., Alibaba Cloud Computing Co., Ltd. and Anhui Heli Co., Ltd., etc.

11. Agreement on Investment Intention for Establishing Synergistic Advantage Industrial Funds in the Yangtze River Delta Region

Main contents: To help the Yangtze River Delta to build a world-class industrial development cluster, large enterprises in Shanghai, Jiangsu, Zhejiang and Anhui jointly initiated the establishment of the Yangtze River Delta Synergy Advantage Industrial Fund, and reached an intention on the amount of subscribed capital, fund management organization, fund operation period, fund investment direction, confidentiality terms and other matters concerning the participation of all parties as limited partners in the fund.

Signatories: Chairman of Shanghai International Group, China Pacific Insurance (Group) Co., Ltd., Industrial and Commercial Bank of China Co., Ltd., Jiangsu Shagang Group Co., Ltd., Zhejiang Longsheng Group Co., Ltd. and Anhui Investment Group Holding Co., Ltd.

Smart lock store in a shopping mall in Jinan

　　In recent years, smart door locks have gradually entered the public eye because of their safety and convenience. However, can these smart door locks really lock safely?

　　Not long ago, the China Consumers Association tested more than 20 smart door locks, and none of them were completely qualified. In Jinan, after investigating the smart door locks currently on the market in Jinan, the reporter found that many smart door locks such as Skye and Luke that failed the test are still on sale, and the price is high.

　　In addition, the safety of smart door locks is also questioned in the eyes of consumers.

　　In this regard, experts said that the living fingerprint identification function of a variety of smart door locks was easily cracked, and merchants were suspected of false propaganda and defrauding consumers. In addition, the core function of the smart door lock is limited in the fault state, and the security needs to be further enhanced.

　　There are many kinds of smart locks, and living fingerprint identification is expensive.

　　On August 14th, the reporter went to a smart door lock store on Shanda Road. According to merchants, at present, most of the smart door locks in the store are four-in-one, passwords, key cards, fingerprints and keys can be used, and the price ranges from 800 yuan to more than 3,000 yuan.

　　"There are two kinds of fingerprint unlocking, one of which is optical recognition." The merchant told reporters that this technology rose earlier, which is equivalent to "photographing". It collects the surface texture image of the fingerprint through the reflection of light, so it is only necessary to take a photo of the fingerprint and then put it on the fingerprint lock to identify it.

　　In addition to optical identification, the other is a semiconductor fingerprint head, which can identify biological temperature, and its safety and sensitivity are better than optical identification. When asked whether the door card will be copied, the merchant said that if the card is not lost, it will not be copied. If it is lost, the lock should be restored to the factory settings immediately, and the previous card will become an invalid card.

　　In the Luke smart door lock store on Beiyuan Street, the merchant said that fingerprint unlocking has now been upgraded to the third generation, that is, a number of living fingerprint identification smart door locks. At present, this smart lock is the main product in the store, which combines optical detection technology and semiconductor capacitance fingerprint identification technology to verify the user’s fingerprint information by extracting multi-dimensional biometric signals such as fingerprint, skin and blood, so as to identify and reject fake fingerprints.

　　"This kind of lock is more expensive than smart locks for optical identification and semiconductor fingerprint identification, and the price generally ranges from 2,000 to 5,000 yuan."

　　The merchant told the reporter that the price of the lock is more expensive because of its strong protection.

　　"NFC function is the latest addition." Merchants told reporters that NFC is a separate button and needs to be purchased separately. This kind of fingerprint is mainly aimed at consumers whose fingerprints are not obvious, such as the elderly, whose fingerprints are particularly worn, or the children of three or four years old, whose fingerprints have not yet grown up.

　　It is understood that at present, in Jinan, the smart door lock brands sold in the market mainly include Skye, Luke and Luxing.

　　In the comparative test report of smart door locks released by China Consumers Association in May this year, more than 20 smart door locks were tested, and none of them were completely qualified. Among them, brands such as Skye and Luke are involved, but these brands are still on sale in Jinan.

　　The safety of smart locks unlocking themselves in the middle of the night is questioned by consumers.

　　As smart door locks are more and more accepted by the public, negative news about smart door locks is also common. The reporter searched from the "black cat complaint" network platform and found that there were 36 complaints about smart door locks, of which quality problems accounted for more than half.

　　In addition, according to public media reports, a strange thing happened at Mr. Zhang’s home in Qingdao. One night, the door of his home was suddenly opened. In panic, Mr. Zhang chose the police for the first time.

　　However, the monitoring shows that there is no one at Mr. Zhang’s door. After many investigations, it was found that his smart door lock was opened by himself. It is reported that the door lock was purchased by Mr. Zhang for 1599 yuan in October 2018, and it took more than half a year.

　　In a smart door lock shop in Zhuanshan West Road, Jinan, the reporter met Ms. Su who was going to buy a smart door lock. "I think the smart door lock is safer than the ordinary door lock. This kind of smart door lock is quite advanced, and it is not easy for thieves to open it." Ms. Su told reporters that she is now more worried about whether this smart lock will be broken, and if it is broken, it will be more troublesome to repair.

　　"This smart door lock has been bought for less than half a year. At the beginning, it was just to decorate the house. It is very convenient to see this lock in the home square without a key. Because the security measures in my community are quite good, I need an induction card to enter the community and an induction card to take the elevator, so I am not too worried about security issues. " Ms. Liu of Jinan told the reporter that she bought a smart door lock to value the convenience of this door lock.

　　"Used for several years, very convenient. However, there was also a fault, and even the physical door lock could not be opened. Later, it was opened after the sale. " Mr. He, who also uses smart door locks, told reporters that because of this failure, he felt that the security of smart door locks was unreliable and changed the smart door locks at home back to traditional door locks.

　　In addition, some consumers report that the smart door locks in their homes always call the police inexplicably, which adds a lot of trouble to his life.

　　Living fingerprint lock "can’t be locked" under the fault state of "nominal"

　　In recent years, whether the smart door lock is safe has been a hot topic.

　　At the end of 2018, the State Administration of Markets conducted risk monitoring on 40 smart door locks, and 25% of the sample fingerprint identification functions had security risks. In May this year, China Consumers Association conducted a comparative test on 29 mainstream smart door lock products. The results showed that 48.3% of the samples had security risks when passwords were opened, 50% of the samples had security risks when fingerprints were opened, and 85% of the samples had security risks when information identification cards were opened. In this regard, Luo Gang, deputy secretary general of Beijing Consumers Association, said that when smart lock merchants promote their fingerprint unlocking technology, they will mostly emphasize the living biometric unlocking technology, and they will also claim that this technology can prevent fake fingerprints from unlocking. However, after testing, many products in the sample smart lock can be easily cracked, which is inconsistent with the statement made by the merchants during the publicity, and is suspected of false propaganda and deceiving consumers.
　　Previously, CCTV reported on the comparative tests of smart door locks by consumers’ associations in Beijing, Tianjin and Hebei, among which there was an abnormal circuit test of smart door locks. According to the inspector, this test is to monitor whether the smart door lock can still maintain its core functions and unlock and lock under abnormal working conditions.
　　However, the test results are not satisfactory, and many mainstream smart locks have abnormal locking or unlocking under abnormal working conditions.
　　In this regard, Luo Gang said that if there is a glitch in the smart door lock in daily life, it should not affect his core functions, which also proves that the security of the smart door lock needs to be further strengthened and its reliability is poor. (Text/Photo Reporter Ding Yifan Intern Wu Youjun)

Medical Jianghu of original DrX

The development of medicine is intended to benefit mankind, but I don’t know when the progress of medical technology has not only failed to benefit mankind, but has become a burden to many people.

Colleagues in oncology once told me a story. A middle-aged patient found that carcinoembryonic antigen (CEA) slightly exceeded the reference value during routine physical examination, but the doctor in charge of physical examination didn’t say much, just asked him to consult the oncology department.

When the other party heard that it was an oncology department, they suddenly became nervous. After all, in the face of life and health, no one dared to be careless, especially the fear of cancer of modern people has already surpassed everything.

Fortunately, colleagues in the oncology department have long been accustomed to this, so they patiently explained:

"Although there is a cancer in the carcinoembryonic antigen test, it is indeed related to cancer, but it does not mean that this indicator is abnormal and you must have cancer."

"So to speak, if the index has risen a lot, or many inspections are in a rising state, and it is higher every time, it is necessary to pay attention to it. But an occasional rise like yours is not necessarily a problem. "

In the hospital, patients often want to hear positive answers, but it seems that doctors rarely give positive answers. The same is true for this patient. After listening to the doctor’s words, he thought for a long time and finally expressed his doubts: "You said there may not be a problem, does that mean there may still be a problem?"

Normal people may have been speechless when they heard this question, but doctors have encountered this situation many times, and all they can do is patiently explain. But even if there are more explanations, even if the other person seems to be relieved, we all know that he will fall into anxiety for a long time to come, but whenever there is a little abnormality in his body, he will think about cancer.

There is nothing wrong with paying attention to health. Life is only a few decades, and everyone wants to live longer. However, when we have a physical examination, we can’t fail to check what we should check, ignore what we should pay attention to, and check a lot of what we shouldn’t check, which even leads to panic and missed diagnosis, but delays a bigger illness.

For example, the following five kinds of tests suggest that you don’t touch them easily in routine physical examination.

First, tumor markers

Seeing this, many people can’t help but question, isn’t it that the higher the tumor marker, the greater the possibility of getting cancer? Why don’t doctors recommend checking this?

In fact, when you spend a lot of money or even thousands of dollars to make a set of tumor markers, if the results are normal, does it mean that you don’t have a tumor? Or if the result is abnormal, you must have a tumor? The answer is not necessarily, because tumor markers are indeed related to tumors, but they are not completely equivalent.

Although the higher the value, the clearer the meaning, but sometimes even in the late stage, or the focus has been widely metastasized, but the value is not necessarily high, and even the normal value is possible. This is because tumor markers are not specific indicators of cancer, and their values will also be affected by other factors, such as inflammation, liver disease and pregnancy.

Let’s give another example in detail, such as alpha-fetoprotein (AFP), which is indeed related to liver cancer and testicular cancer, but not only primary liver cancer, pregnancy, active hepatitis and reproductive system tumors may lead to the increase of this index, but also different detection instruments and reagents may sometimes lead to false positives.

On the contrary, the value of some cancer patients will always be normal, so there will be false negative results. In addition, ECG, urine test and blood test results may be normal, so under the appearance of so-called "everything is normal in physical examination", it will be incredible to suddenly find cancer one day.

Therefore, we should understand what the main uses of tumor markers are, mainly for assisting diagnosis, prognosis judgment, reference for curative effect evaluation and recurrence monitoring of some cancers. To be precise, it is an auxiliary means, and we must never take it too seriously.

Second, X-ray film

This mainly refers to screening lung cancer with X-rays. If the doctor uses X-rays to screen lung cancer for you during physical examination, I suggest you switch to low-dose spiral CT.

Because X-rays have certain limitations, it is easy to miss diagnosis. If X-rays can detect lung cancer, I am afraid it is already advanced. The sensitivity and resolution of X-ray film can only be detected by relatively large lung cancer. If it is early and the tumor is relatively small, X-ray film often can’t find it, which leads to missed diagnosis.

Third, prostate color ultrasound

Prostate color ultrasound is mainly used to find prostate nodules, hyperplasia and inflammation. When many people choose to do prostate color ultrasound, they mainly want to screen for prostate cancer through this examination.

As everyone knows, prostate color ultrasound can’t accurately distinguish benign and malignant prostate lesions, and it can’t determine the nature and degree of nodules. Therefore, most of the time, color ultrasound of prostate can only be used as a preliminary reference, and can not be used as a basis for the diagnosis of prostate cancer.

Therefore, if abnormal prostate color Doppler ultrasound is found in physical examination, it is better to combine prostate specific antigen (PSA) to check. Because prostate specific antigen is a special protease secreted and synthesized by prostate epithelial cells, its clinical significance is very wide and its price is relatively low.

Iv. PET-CT

In recent years, the abuse of PET-CT has become more and more obvious and serious, which is mainly related to the benefits. After all, the price of a whole-body PET-CT examination is not cheap, and the profit can be imagined.

In addition, many institutions often exaggerate the publicity when promoting PET-CT examination, so that many people have some misunderstandings about this examination, thinking that if they have cancer, they will know if they have a whole-body PET-CT examination. It feels like this examination is a omnipotent cancer detection artifact, and it can be done once and for all.

In fact, there is no universal cancer detection means, and there is no universal cancer detection artifact. What’s more, medicine has not developed to that degree. This examination is mainly to accurately check the metabolism of a certain part of the body, which is often used for clinical diagnosis and treatment, but it is often of little significance to ordinary people.

5. Screening breast cancer with CT or infrared ray.

When doing physical examination, some physical examination centers will recommend using CT and infrared rays to screen breast cancer. This is really unnecessary, because the sensitivity of CT in detecting breast cancer is not high, especially the diagnostic accuracy of cystic-solid lesions is limited, which is often not as good as that of ultrasound, and the accuracy of tiny calcification is not as good as that of X-ray. In addition, the radiation dose is relatively large and the cost is relatively high, so the cost performance is really limited.

The same is true for infrared rays, which, on the one hand, have low sensitivity and large error, and on the other hand, require doctors to have strong subjective judgment, so it is easy to misdiagnose and miss diagnosis. Therefore, if screening breast cancer, it is suggested that breast B ultrasound or breast molybdenum target is basically enough.

Finally, I need to remind you that these are all based on the premise that you don’t have any symptoms or high-risk factors, and the specific situation needs to be treated specifically.

Read the original text