What happens when you inhale smog occasionally?

Question 1: Why does smog sometimes spread wildly? Why does smog sometimes suddenly disappear? This is because smog is caused by man-made pollution and natural climate.

Man-made air pollution, such as automobile exhaust, industrial waste gas, etc., actually exists all year round, but it is not always ready-made smog, because the formation of smog requires clean and stable air, no airflow and rain, and it will not be said that smog will be washed away or blown away.

Therefore, when the meteorological conditions are suitable, the smog will form quickly, cold air will come, there will be wind or rain and snow, and the smog will soon fade.

Question 2: Can you really avoid the smog if you live high? 5 points "live in high-rise, live in high-rise air, stay away from smog!" Recently, it suddenly spread in the market that high-rise office buildings or residential buildings can avoid the influence of smog. Is that really the case? Meteorologists and environmental experts say that in most cases, the higher you live, the better the air, but in some cases, you "vacuum" more. Want to live high and completely avoid smog? Sorry, the expert bluntly said, "There is no such tall building on earth!"

These days, in the circle of friends of Weibo and WeChat, it suddenly spread that the 9th floor to 1 1 floor of high-rise buildings are only dust floors, and the polluted air will stop when it reaches this height. The floors above 1 1 have the best air quality. This makes many people who live in high-rise buildings or work in high-rise office buildings suddenly have a little sense of superiority.

Jiang, deputy director and chief forecaster of Nanjing Meteorological Observatory, analyzed that in general weather, the higher the floor, the better the air quality. Because "the higher the altitude, the lower the concentration of pollutants in the air and the better the air quality". In contrast, the lower floor will be more affected by roadside dust and automobile exhaust, because the pollutants in the air near the ground are relatively concentrated.

The higher the air, the better. That's just theoretical. Occasionally there will be exceptions, such as when there is an inversion layer. Jiang told the Nanjing Morning Post that the higher the altitude of the atmosphere, the lower the temperature, and the air is prone to convection, which makes pollutants spread. However, in the morning or evening of autumn and winter, under certain conditions, the temperature may rise with the increase of height, resulting in "inversion".

According to monitoring, the thickness of inversion layer in Nanjing area can reach 150-300m, which makes more smoke and impurities gather near the ground and causes serious pollution. The height of 150m ~ 300m is exactly the height of a high-rise or super-high-rise building with 30 ~80 floors. In order to exceed this height and avoid air pollution caused by adverse weather, the 89-story Zifeng Building with a total height of 450 meters is probably the only choice for Nanjing.

As for not only wanting to breathe better air, but also getting rid of the smog completely, living in a tall building is definitely not a wise or realistic choice. Deputy Director Jiang cited the previous monitoring data: the vertical coverage height of major harmful pollutants such as aerosols in Nanjing smog is 2000 meters or 3000 meters from the ground to the air.

2000 meters to 3000 meters? At present, the tallest building in the world, the Khalifa Tower with 0/62 floor in Dubai/KLOC, UAE, is only 828 meters high!

Therefore, citizens, instead of thinking about "hiding in high-rise buildings and unifying", it is better to think about how to start from ourselves and reduce air pollution. As long as the air is good, no matter whether it is a high-rise building or a bungalow, there is no need for "self-improvement" and "smog" to work hard.

Question 3: Is the smog wearing a mask tube? 1, wearing a mask can fight smog better than not wearing a mask, so it is useful.

2. Most masks can filter dust, but they can't stop PM2.5. The air purification equipment specially designed to remove PM2.5 is still very effective. For example, Yashe air curtain has been tested by the National Air Conditioning Equipment Quality Supervision and Inspection Center: the primary purification efficiency of PM2.5 is 98%, and the ozone increment is zero.

3. The material of the mask determines the anti-fog effect. Generally speaking, gauze is fine, soft and breathable, and masks that pass quality inspection can effectively prevent smog.

Question 4: Is light air pollution suitable for morning running? Is it necessary to keep running every day? Sometimes there will be haze. Isn't that bad for your health? Exercise in foggy days can lead to respiratory tract infection or some diseases. If you want to exercise, you'd better choose the weather with better air, and you can also do some indoor sports at ordinary times. But I see that many people now wear an innovative electronic mask purifier when they run in the morning. It feels ok and fashionable.

Question 5: What happens when mosquitoes suck smog in? 1, several people will bite you together, one is mainly related to the smell, and you also eat something that mosquitoes hate: on April 10, the service column of China Central Radio 2 told you a method to prevent mosquitoes: take vitamin B 1, and if you go outdoors, eat it 3-4 days in advance. She said people can't feel it. Mosquitoes can't stand the smell and will stay away from you. It is said to be particularly effective. Just try it.

2, vitamin B 1 soaking in water will also make mosquitoes afraid to approach. This water-soluble vitamin has no side effects. Excess ingredients are completely excreted and will not be stored in the human body.

3. Soak two pieces of Illicium verum in the seasoning in the warm washbasin, and take a bath with its water, so that mosquitoes will not dare to approach.

4. Burning dried orange peel indoors can replace mosquitoes, repel mosquitoes and eliminate indoor odor.

5. Wear light clothes. Attention, everyone! Aedes mosquitoes (also known as spotted mosquitoes) like to park on black clothes. So in hot summer, everyone should try to wear some lighter clothes.

6. Try to wear socks. Many people like to wear shoes barefoot in summer, but they don't know that after wearing socks, mosquitoes feel that people's skin humidity is reduced, and the volatiles on the skin surface are reduced, which will reduce bites.

7. You can't catch a bite. If we are bitten by mosquitoes, we will catch them at once. However, after scratching, the tissue fluid and lymph in the skin ooze out and swell into a bag, which will become more and more itchy and will not fade easily. This is how the "red bean leg" wrapped in a red envelope was caught. If you insist on not grasping, the itching will obviously subside after 10 to 15 minutes.

Mosquitoes belong to Insecta Diptera, and there are about 3000 species in the world. It is a tiny flying insect with a piercing and sucking mouthparts. Usually females suck blood, while males suck the juice of plants. Blood-sucking female mosquitoes are intermediate hosts of pathogens such as dengue fever, malaria, yellow fever, filariasis and Japanese encephalitis. Mosquitoes are distributed on all continents except Antarctica. The most famous ones are Anopheles, Aedes and Culex.

Mosquitoes are one of the four pests; Its average life span is not long, which is 3 ~ 10 days for females and 10 ~ 20 days for males. The deadliest animal in the world ranks 1 mosquito, with more than 725,000 deaths every year.

Mosquitoes can be divided into male mosquitoes and female mosquitoes. The antenna of male mosquitoes is filiform, and the antenna hair is generally thicker than that of female mosquitoes. Their food is nectar and plant juice. The mouthparts of male mosquitoes degenerate, and female mosquitoes need to bite animals to suck blood before breeding to promote the maturation of inner eggs.

Mosquito saliva contains a substance with vasodilating and anticoagulant effects, which makes blood flow easier.

mosquito

Gather at the bite. After being bitten by mosquitoes, the skin of the bitten person often appears blistering and itching symptoms. Almost everyone has an unpleasant experience of being bitten by mosquitoes, or more accurately, being bitten by mosquitoes. Mosquitoes cannot open their mouths, so they don't bite the skin. In fact, they pierce human skin with six needle-like structures. These short needles are the center of mosquito feeding mouthparts. These short needles suck human blood like blood-drawing needles; Mosquitoes also excrete saliva containing anticoagulant to prevent blood coagulation, so that they can have a full meal. Mosquitoes ate, drank and drifted away, leaving behind an itchy and swollen bag. However, the itchy feeling is not caused by short needles or chemicals in saliva. We feel itchy because the body's immune system releases a kind of protein called histamine to fight against foreign substances, and this immune response will trigger an allergic reaction at the bite site. When blood flows to the bite to accelerate tissue recovery, histamine will cause swelling of the tissues around the bite. The intensity of this allergic reaction varies from person to person, and some people have more serious allergic reactions after being bitten by mosquitoes.

Every time a mosquito bites, it will suck about one thousandth of a milliliter of blood. After each full meal, mosquitoes usually move within 2 kilometers of their birthplace, but as far as 180 kilometers.

Each female mosquito lays eggs about 1000-3000 in her lifetime. They usually lay eggs on the water, and two days later they hatch Cheng Shuisheng larva-Jie Jué. Cicadas feed on algae in the water. After four times of peeling, they grow into pupae and float on the water. Finally, the pupa epidermis breaks and young mosquitoes are born.

The life cycle of mosquitoes includes four parts: eggs, larvae, pupae and adults. Generally, eggs 1-2 days, larvae 5-7 days and pupae 2-3 days. Adults emerge to feed on blood for 3-7 days, and the whole generation takes about 1-2 weeks.

Specific analysis

Mosquito hazard

Among mosquitoes, the most hateful is the female mosquito that sucks human blood. Male and female mosquitoes have different eating habits ...

Question 6: Can you avoid foggy days if you live in a high-rise building? Obviously not. The smog forecast is often related to the climate, so we know that it is not a matter of one or two hundred meters.

Question 7: The experience of smog "I don't have much patience and courage to wait for the clear sky Wan Li after the roar, so I can only choose to bear it silently; Hazy sunshine occasionally looms, inexplicably suppressed in the chest, but can only be forced to breathe shallowly. . . "Want to escape? There is nothing to export! . . Want to fly? Where to find omnipotent wings! . . .

Question 8: English translation is sometimes cloudy.

Question 9: Is foggy weather not suitable for running? Wang Jia, an expert in respiratory medicine at the First Hospital of Hebei Medical University, said that due to foggy weather, the air circulation was poor and the air quality was poor. Harmful substances in fog can induce asthma, tracheitis, pharyngolaryngitis and some allergic diseases, and cause relatively slight airway damage to healthy people, with symptoms such as cough, excessive phlegm and sore throat. At present, in the season of frequent haze weather, attention should be paid to reducing the harm of fog to health.

Minimize going out in foggy days, and wear cotton masks when going out to prevent respiratory tract from being "polluted" in foggy days. Wash your face and skin in time when you come back from going out, or rinse your nose with clear water.

Smog weather should minimize the number of people going to many places, and poor air circulation in some places can easily lead to cross-infection of respiratory diseases.

Morning exercise in foggy days will not only lead to respiratory diseases, but also lead to cardiovascular and cerebrovascular diseases;

When running, because the tissues of the body need a lot of oxygen supply, the blood circulation is faster and more oxygen is needed, so you keep speeding up the breathing frequency when running. Inhaling more harmful substances in smoggy weather can easily lead to the above respiratory diseases. So for the sake of health, don't run or do other sports in foggy days. If it is really necessary, it is recommended to go to the gym or some indoor sports venues, which will reduce the moral impact of some smog on breathing air.