The protection period of the new crown vaccine is only half a year, and the sun hurts the body...
Don't let these rumors give us April Fools' Day
Trainee reporter Yu Ziyue
Refute rumors
The annual April Fool's Day is here, and it's the day when "fooling people is not guilty".
However, rumors on the Internet are fooling the public every day, whether it is April Fool's Day or not.
Last month, there were a lot of rumors on the Internet: the protection period of the new crown vaccine is only half a year, the sun is harmful to the TV and the human body, and the charging in the air will produce extremely strong radiation... On April Fool’s Day, the Life Edition will take stock of the March “Fool” "Those rumors about us.
The protection period of the new crown vaccine is only half a year?
The truth: the specific protection time limit is still under observation
Since the new crown vaccination work has been carried out on a large scale, discussions about the protection period of the vaccine have never been interrupted.
There are rumors that the protection period of the new crown vaccine is only half a year.
is this real?
A reporter from Science and Technology Daily learned that the "Guiding Principles for Clinical Evaluation of Vaccines for Prevention of New Coronavirus (Trial)" issued by the National Medical Products Administration requires that the new coronavirus vaccine on the market should provide at least 6 months of protection.
A few days ago, Pang Xinghuo, deputy director of the Beijing Municipal Center for Disease Control and Prevention, introduced in an interview with the media that the protection period of the new crown vaccine is not only half a year, but the time for vaccination is still very short, with only half a year's data for the time being.
At present, relevant departments are continuing to collect data on the antibody level of the vaccinated population, and closely monitor the protective effect after vaccination.
There is even more exciting news.
Yu Qingming, a representative of the National People’s Congress and Chairman of Sinopharm Group Sinopharm Holdings, disclosed at the two sessions this year that in March 2020, the group’s fourth-level party and government leaders "tested drugs with their own bodies". After one year of continuous antibody tracking and monitoring, their body is currently The antibody level is still at a high level, and there is no significant drop.
Of course, there are individual differences in the level of antibodies produced after the new crown vaccination.
The above-mentioned example of "testing the medicine by oneself" may not be enough to explain, but it sends a signal: the protection period of the new crown vaccine may be underestimated by some people.
To sum up, "the domestic new crown vaccine has only half a year protection period" is a rumor, and "half a year" is only the bottom line for qualification and listing. How long is the protection period and the time will eventually give an answer.
The sandstorm came from the opening of the Three North Shelter Forest?
Truth: Shelterbelts have a very limited effect on the entire wind farm
On March 15th, northern my country was hit by the strongest sandstorm in the past 10 years. The local visibility was less than 500 meters. This was the strongest sandstorm process affecting my country in the past 10 years.
At the same time, there are rumors on the Internet that the sand and dust weather was the opening of the Three North Shelterbelt, blowing away the smog and ushering in a sandstorm.
Is this really the case?
"It is undeniable that the Three North Shelterbelt has a certain impact on the local wind field, and it has a positive and positive effect on wind prevention and sand fixation." Zhang Bihui, director of the Environmental Meteorological Center of China Meteorological Administration, said that the role of the Three North Shelterbelt is mainly reflected in the source of sand. On the local windbreak and sand fixation, the sand-dust weather process was significantly affected by the upstream transmission, and the Three North Shelterbelt had limited impact on this sand-dust transmission.
The Three-North Shelterbelt mainly inhibits flying sand and floating dust near the ground, but its impact on the entire wind field is very limited, especially in this very strong weather process, the impact of the Three-North Shelterbelt on sand and dust The degree is relatively low, and the scope impact is very small.
What role has the Three North Project played in the control of sandstorms?
Zhu Jiaojun, director of the Shenyang Institute of Applied Ecology, Chinese Academy of Sciences and leader of the Three North Engineering Evaluation Technology Group, once said: “In the face of sandstorms, how much protection the Three North Shelterbelt can play in protection? We believe that it is effective in the near-surface area. , But in terms of atmospheric circulation, the role of shelter forests is minimal."
Zhu Jiaojun said: “Actually, sandstorms are not prevented by our Three-North region, or our country will be prevented from preventing them. It will also be affected by neighboring countries and regions. This is a global problem.”
Air charging will produce extremely strong radiation?
The truth: product power is low enough to pose a hazard
Recently, a number of mobile phone manufacturers have released air-to-air charging technology.
In the video it showed, the two mobile phones were charged at a distance of 1 meter from the charging device.
Since the advent of the space charging technology, there has been no interruption on the Internet about the fact that it will produce extremely strong radiation and endanger human health. Is this kind of black technology really so harmful?
First, let's take a look at the usage scenarios of air charging.
Imagine that you swipe your phone frantically on the way from get off work and find that the battery is low when you get home.
In the past, you might not have time to take off your shoes, so you rushed into the bedroom at a speed of 100 meters to find a charging cable.
In the future, you will never have to panic again: as soon as you enter the house, your mobile phone is automatically connected to the charging device at home, and you can charge it in the air.
"Actually, the air charging technology is a wireless charging technology, which is mainly divided into three types: electromagnetic induction, electromagnetic resonance and radio wave. No matter which method of air charging, the technical principle is based on the propagation of electromagnetic waves. . And electromagnetic waves do produce radiation. The higher the frequency and the greater the energy of electromagnetic waves, the stronger the corresponding radiation.” Yan Huaizhi, director of the Institute of Computer Network Attack and Defense, Beijing Institute of Technology, said in an interview with a reporter from the Science and Technology Daily.
"When discussing the impact of radiation on human health, we must consider the type of radiation and radiation dose." Yan Huaizhi further explained that radiation can be divided into ionizing radiation and non-ionizing radiation.
Ionizing radiation includes cosmic rays, X-rays, and radiation from radioactive materials, while non-ionizing radiation includes ultraviolet rays, radio waves, and microwaves.
We are usually exposed to these non-ionizing radiations, and the radiation generated by air charging equipment also belongs to this category.
Generally, the energy of ionizing radiation is much higher than that of non-ionizing radiation, and the former is more harmful.
Therefore, the hospital radiology room will be equipped with thick screen doors and marked with radiation warnings, while microwave ovens, WiFi, etc. can be "streaked" at home.
"From the current public information, the power of general household electronic products is relatively low, which is basically not enough to cause radiation damage to the human body, and there is no relevant scientific data to show that the radiation generated by this air-to-air charging technology will harm the human body." Yan Huaizhi Say.
Riling is harmful to TV and the human body?
The truth: only affects TV signal reception
Recently, the State Administration of Radio and Television issued a forecast of the time of the satellite day transit in major cities across the country in 2021.
The notice pointed out that from February 25 to March 17, 2021, the satellite used for the transmission of my country's radio and television programs will enter the solar transit period, and the reception of satellite radio and television programs will be affected by the solar transit.
Subsequently, someone on the Internet asked whether Riling would be harmful to the TV and the human body?
To answer this question, we must first understand what Riling is.
Usually, when you watch TV, you have encountered situations where the picture suddenly turns into mosaics or snowflakes. This may be the ghost of Riling.
Shi Zhicheng, a member of the Chinese Astronomical Society and director of the Tianjin Astronomical Society, has done relevant science popularization.
Every year around the vernal and autumnal equinox, the sun is located above the earth's equator.
During this period, if the sun, the communication satellite and the ground satellite receiving antenna happen to be in a straight line, the strong electromagnetic radiation of the sun will cause strong interference to the satellite signal, which will degrade the quality of the signal received by the TV and cause the image to appear on the TV screen. Unclear, mosaic, snowflakes, or even black screens, this phenomenon is called Ri Ling.
The China Internet Joint Rumor Refusal Platform hosted by the State Internet Information Office clearly stated: Ri Ling will not cause harm to TV and human body.
After encountering the sun, the TV screen usually returns to normal after a few minutes, and the longest does not exceed 20 minutes.
Since the relevant departments of our country have mastered the orbital parameters of the sun and the geostationary satellite, they can accurately predict the impact of the solar transit on the satellite signal and issue a forecast of the transit time.
In this way, the public can prepare early.
Ri Ling will affect the TV signal, so will it affect the mobile phone signal?
In response to this, Zuo Wenwen, an associate researcher at the Shanghai Astronomical Observatory of the Chinese Academy of Sciences, explained in an interview with the media that the sun's transit is caused by the "connection" between the sun and the satellite, so satellite phones will be interfered.
However, mobile phone communication generally does not use satellites, but transmits signals through optical fiber and other methods, so it will not be interfered.