The stronger the mosquito bag, the stronger the more toxicity?Wearing a mask to increase the lung nodule?Rumor

In the hot summer, Mo let these rumors increase the "heat" degree.

After the summer solstice, the high temperature mode was opened in many places, and the temperature in some areas even reached 40 degrees Celsius. Along with the rolling waves, there are rumors, including "the larger the mosquito bag, the stronger the toxicity of the mosquito", "the carcinogenic carcinogenic carcinogenia made of air fried pots", "long -term masks can increase the lung nodules", "the earth reaches far away The weather will become cold "..."

Today, a reporter from the Science and Technology Daily takes a look at the new rumors this month to help you pull away the fog and find the truth.

The larger the mosquito bag, the stronger the mosquito toxicity? Truth: It is mainly related to the type of mosquito and personal sensitivity

In addition to high temperatures in summer, mosquitoes are annoying. After some people are bitten by mosquitoes, they may have a small red envelope, and some people will become horrible after being bitten — they become "recruiting ears", "sausage mouth", "trotters hand" because they are bitten by mosquitoes, " News has been reported in various reports.

It is also bitten by a mosquito. Why is the "model" so different? The Internet passed "the greater the mosquito bag, the stronger the toxicity of the mosquito", many people are convinced of this statement, so what is the truth?

"After being bitten by a mosquito, the skin will have symptoms such as wind masses, pimples, itching, etc. The mosquito bags we often say are a local allergic reaction of the skin." Liu Ruiling, deputy chief physician of the abnormal reaction department of Tianjin Medical University General Hospital Show.

"The degree of inflammation after being bitten by a mosquito is mainly related to the type of mosquito and the sensitivity of individuals." Liu Ruiling explained that when people with allergies are bitten by mosquitoes, they will secrete a large amount of histamine and cytokines in their bodies, which will cause triggers Allergic reaction. The light group, pimples, and vascular edema have full body reactions.

In addition, the size of the mosquito bag is also related to the biting part of the bite. Loose connective tissue parts such as eyelids, lips, backs, and children's foreskin are prone to edema after being bitten, and mosquito bags will appear relatively large.

After being bitten by a mosquito, do not desperately scratch it. Scratching will apply mechanical pressure on the local skin, and at the same time, it will also speed up the blood flow. These will aggravate the inflammatory response and cause mosquito bags to become greater.

Cancer carcinogens made of air fried pan? Truth: There is no clear evidence of carcinogenesis

However, the food made of air fried pots recently reported on the Internet because of the cause of acrylamide, and acrylamide is a carcinogen.

"Whether carcinogens will produce carcinogens during the cooking process are mainly related to ingredients, cooking temperature and cooking time." Wang Hao, a professor at the School of Food Science and Engineering, Tianjin University of Science and Technology, said in an interview with a reporter from the Science and Technology Daily that no matter what cooker is used for cooking As long as the food is over -heated, there is a possibility of causing cancer.

Acrylamide is produced under high temperature and low water content conditions. Generally speaking, when the temperature exceeds 120 degrees Celsius, a small amount of acrylamide is generated. When the temperature is 160 to 180 degrees Celsius, its output reaches its peak. And this temperature is the right temperature for roasted food and fried food. In addition, more ingredients containing starch, the more acrylamide produced at high temperatures.

"However, you don't have to worry too much." Wang Hao said, first of all, acrylamide is a 2A carcinogen. It has sufficient evidence of the carcinogenicity of animals. Whether it can lead to cancer in the human body still lacks sufficient experimental evidence. Secondly, when fried and barbecue, when cooking ingredients rich in carbohydrates, if the temperature exceeds 120 degrees Celsius, it may produce acrylamide, and the longer the cooking time, the less the ingredients, the more acrylamide produces. And from the perspective of quantity, the heating efficiency of the air frying pot is higher, the food remains shorter at high temperature, and even the acrylamide produced may be less than other high -temperature cooking methods.

"We can't put aside the dose to talk about toxicity." Wang Hao said that for ordinary people, there will be no large amount of acrylamide in a short time in daily diet. As long as it is eaten normally, the level of dangerous intake cannot be achieved at all. However, he suggested that when you use air fried cooked ingredients with starch, it is best to make pre -processing in advance, such as rinse the starch on the surface of the potato on the surface of the fries. At the same time, grasp the cooking time reasonably, don't cook too long at high temperature.

Can we wear a mask for a long time increase? Truth: Normal use will not cause harm to the lungs

Not long ago, the saying that "wearing a mask for a long time can cause the lung nodule for a long time", saying that the middle layer of the middle layer of the mask is oil product, and the micro -end particles will enter the human lungs via the respiratory tract. Nodules increase.

In this regard, Qian Xiaoming, a professor at the School of Textile Science and Engineering, Tianjin University of Technology, said in an interview with a reporter from the Science and Technology Daily that wearing a mask within the normal use range will not produce micro -granules and will not enter the lungs.

"Except for cotton, hemp, hemp, silk, recycled cellulose fiber and other textile materials, many synthetic fibers, including melt spray cloth, are made of petroleum base materials." Qian Xiaoming introduced that polypropylene is the main Petroleum base materials are widely used. The melting spray cloth for making masks is an ultra -fine fiber non -woven material processed by polypropylene polymer material.

"After processing this kind of polymer material has been processed, it has a certain strength and very good filtering performance after processing. In normal use time, it is impossible to produce small molecular substances." UV resistance, after a long time of sunlight, will have a problem of crispy and weakened strength; under the action of external forces, such as twisting and rubbing with hands, it may also become powder particles. However, Qian Xiaoming emphasized that this powder particles exist in large particles, and it is difficult to be inhaled into the lungs.

"As long as the melting spray mask is not exposed to the sun and does not exceed the period of use, it will not produce microcoil particles. Generally, it is not a problem to store it within two years in the backlight." Qian Xiaoming added.

Will the weather get cold from the distance from the distance? Truth: The hot and cold of the weather is related to the angle of the sun irradiation

Recently, such a news came out on the Internet: From May 22 this year, the sun will stay away from the earth and gradually reach the far day. At this time, the weather will become relatively cold. This phenomenon will continue until August this year.

At present, the high temperatures in many places across the country have made rumors not self -defeating, but some people are still worried that the high temperature is only the "flashing flowers" of this summer. The future temperature will continue to decline. Will it really be the case?

"The orbit of the Earth around the sun is roughly oval, but its long axis and short shafts are not much different, so it can basically be regarded as a circle." Yan Weiguo, executive vice chairman of the Tianjin Astronomical Society, introduced in an interview with the Science and Technology Daily reporter. When the earth is moving on the track, the distance from the sun is sometimes close or far away. It is at the closest position from the sun, and the farthest position from the sun is the distance.

"Whether it is at a long time or long time, the distance between the earth and the sun is almost the same." Yan Weiguo said that when the earth was at the nearby point, it was 147.1 billion kilometers from the sun; and when the local earth was at a distance, the distance was the distance. The sun is about 152.1 billion kilometers. The difference between the two is 0.05 billion kilometers, accounting for only 3.3%of the average daily distance, which can be ignored. Therefore, the calories obtained by the earth and the long distance are very small.

The temperature changes that people feel on the earth are mainly related to the angle of the sun. "There is a angle of the Earth's orbit surface and equatorial surface. At about June 22 each year, the northern hemisphere summer solstice, the sun is direct to the north, at this time the northern hemisphere (most of the regions) is the most of the calories obtained from the direct point. There are more, so the weather is relatively hot; on the contrary, around December 22, that is, the northern hemisphere winter solstice, the sun reaches the south, and the northern hemisphere has obtained less calories, and the weather is relatively cold. "Yan Weiguo explained.

"Actually, early January each year, the earth is just in the near future. At this time, it is the winter of the northern hemisphere. At this time, the weather is relatively cold. By the beginning of July, when the earth turned to the summer, it was summer in the northern hemisphere. The weather was relatively hot. The weather was relatively hot. . "Yan Weiguo said that it can be said that the hot and cold weather has little to do with the recent and long -distance points.

Source: Science and Technology Daily

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