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Little knowledge in summer
1. Summer safety tips (what are the common safety knowledge of primary school students in summer)

Summer safety tips (what are the common knowledge of summer safety for primary school students) 1. What are the common safety knowledge of primary school students in summer vacation?

Pupils' summer safety knowledge:

First, the safety of recess activities.

It's hot in summer and clothes are not as thick as in winter. During the break, do as little strenuous exercise as possible to make up for chasing each other and avoid falls and bruises.

Second, food safety.

Food tends to go bad and rot in summer, so be careful not to eat rotten food. Especially when buying snacks in stalls, you must choose products that have obtained QS certification from regular manufacturers, and never buy "three noes" products produced by unlicensed manufacturers. Drinking more cold boiled water can not only replenish water to the body, but also quench thirst.

Third, prevent lightning strikes.

Thunderstorms often roar in summer. When it rains and thunders, pay attention to: 1 Don't squat in the open air, especially in high places, away from high-rise buildings such as telephone poles and water towers. It's best to unplug the power socket when lightning strikes. It's best to go out and close the doors and windows of each room when it thunders.

Fourth, prevent heatstroke. After sweating a lot, you should replenish water in time. When going out for activities, especially hiking, mountain climbing or going to places where water is scarce, you must bring enough water.

Five, to prevent drowning

1, pupils should swim under the guidance of adults and learn to swim;

2. Don't play alone by the river or the mountain pond; You can't go swimming.

3. Don't go swimming in non-swimming areas;

4. Students who can't swim, don't swim to the deep water area, even if there is life-saving.

The circle is also unsafe;

5. Make proper preparations before swimming to prevent cramps.

2. Safety knowledge in summer

In summer, stored rice noodles are easily affected by insects. You can use two handfuls of pepper and fennel, wrap them in gauze and put them in a jar full of rice. Cover the cylinder head tightly, and the stored rice noodles will not be easily eaten by insects. In summer, the raw meat bought back can be wrapped in a wet cloth dipped in vinegar, which can keep fresh for a day and a night. In summer, soy sauce goes bad easily. Peel a few cloves of raw garlic and put them in a bottle. Soy sauce is neither moldy nor smelly. When cooking lard in summer, cut raw radish into two or three pieces and put it in an oil container before putting the oil, so that there will be no strange smell. In summer, putting food in a porcelain bowl and then cooking it in a pressure cooker can keep it unchanged for 3-4 days. In summer, if the bought tofu turns sour, soak it in 50% hot alkaline water for 20-30 minutes, and then rinse it with clear water to remove the sour taste. In summer, if you buy vegetables with bugs, you can soak them in salt water for a while, then rinse them with clear water to wash them all off. When cooking in summer, vinegar is added to 1.5 kg rice according to the ratio of 2-3 ml, and the cooked rice is not easy to deteriorate and has no vinegar taste. Tea leaves are moldy in summer, so it is forbidden to bask in the sun. Bake in a pot for about 10 minutes, and the taste will be restored. But the pot should be clean, and the fire should not be too big. In summer, white underwear tends to turn yellow after washing. You can take a basin of clear water, drop 2-3 drops of blue ink, soak the washed underwear for another quarter of an hour, and dry it in the sun without wringing it out, so that the washed clothes are white and clean. New vests and undershirts bought in summer are washed with boiling water before wearing, which is wear-resistant and does not fade; But chemical fiber fabrics should not be scalded with water. Foam sandals newly bought in summer are not easy to crack and wear after being soaked in salt water for a long time and dried. Using loofah as insole can remove moisture from rubber-soled shoes. Put a few pickled sweet and sour garlic under the bed in summer to drive away bedbugs. The climate in summer is hot, the germs multiply and grow rapidly, and there are many factors that affect health. So, in order to spend the summer safely, the following ten "best" in summer life can help you.

Heatstroke is one of the common diseases in summer, mainly due to the imbalance of body temperature regulation in high temperature environment, which makes the body store a lot of heat, causing water and salt metabolism disorder, thus causing heatstroke. The normal body temperature of the human body is maintained at 36℃-37℃, which is because the human body has the ability to automatically adjust the body temperature, so that heat generation and heat dissipation are always in a balanced state. The temperature is high, the humidity is high, and there is no ventilation, so the accumulated heat in the body is not easy to dissipate, so the accumulated heat in the body is more and more; Coupled with excessive sweating, a large number of water loss and salt loss, resulting in imbalance of human regulatory function, will lead to heatstroke. Some people are too tired because of lack of sleep and improper rest arrangements in summer; As well as old age, infirmity, excessive drinking and other factors, can make the human body unable to adapt to the external high-temperature climate, create obstacles in the kinetic energy of body temperature regulation, and make the body temperature rise continuously, thus leading to the occurrence of the disease. Heatstroke is generally divided into three types: threatened heatstroke, mild heatstroke and severe heatstroke. Symptoms of threatened heatstroke include increased sweating, dry mouth, general fatigue, dizziness, palpitation, chest tightness, nausea and inattention. Mild heatstroke is more serious than threatened heatstroke. In addition to the symptoms of threatened heatstroke, there are also symptoms such as elevated body temperature, burning skin, flushing, sweating, nausea and vomiting, slight drop in blood pressure, dizziness and so on. Severe heatstroke shows as follows: the body temperature rises obviously, reaching 40℃ or even higher, suddenly fainting and falling to the ground, and being unconscious; Hand-foot spasm, dry skin or sweating, and sudden drop in blood pressure are often life-threatening if not rescued in time. So once you find heatstroke, you should take timely measures and actively treat it. For patients with threatened heatstroke and mild heatstroke, first help them to a cool and ventilated place, unbutton their clothes, put a cold wet towel on their heads, and let them drink more salty and cold drinks. People with dizziness, nausea and vomiting can take ten drops of water, Ren Dan or Huoxiang Zhengqi water. Patients with severe heatstroke should be taken to the shade as soon as possible for on-site rescue, and should be sent to the hospital immediately without delay. Pay attention to prevent heatstroke. Personnel working in the open air or high temperature environment must take protective measures to reduce direct thermal radiation and strengthen ventilation; Arrange daily life scientifically, pay attention to the combination of work and rest, and ensure adequate sleep. At the same time, pay attention to nutrition, eat more vegetables and fruits, prepare enough cool drinks such as cold boiled water, mung bean soup and sour plum soup, as well as ten drops of water, cool oil and essential oil. Once you have symptoms of heatstroke, you should take it in time.

3. Summer security measures

First, the safety knowledge of thunderstorms in summer is a season of frequent thunderstorms, and lightning casualties occur from time to time.

Therefore, everyone should attach great importance to their own safety and master the necessary safety protection knowledge in thunderstorm days. 1, pay attention to close the doors and windows, cut off the power supply of household appliances, and unplug them; Do not get close to conductive objects such as water pipes and heating pipes; Don't stand under the lamp cap line; Don't take a shower under the shower head; Don't use your cell phone.

2. Don't stay on the high-rise platform; Don't gather, run or shout in the corridor. 3. Don't enter isolated shacks, sentry boxes and other low-rise buildings; Don't hide under the big tree to avoid the thunderstorm.

4. Don't open an umbrella and hold high other metal objects in the wild; Don't run in the wilderness; * * * Wear wet clothes, shoes, hats, etc. 5. Don't ride a bike; No outdoor ball games; 6. By car, train, etc. Don't stick your head and hands out of the window.

7. Don't connect the wires for drying clothes and bedding to windows and doors. 8. In case of sudden lightning, you should immediately lower your height, put your feet together, put your hands on your knees, and don't touch the ground with other parts of your body to reduce the damage caused by stepping voltage.

9. Once the human body is struck by lightning, it often appears "suspended animation". At this time, mouth-to-mouth resuscitation and extracorporeal heart surgery should be carried out, which can often bring miracles. Call 120 for emergency treatment at the same time.

Second, food hygiene and safety common sense In summer, the weather is hot, the temperature is high, the humidity is high, the propagation speed of pathogenic microorganisms is accelerated, food is prone to spoilage, and bacterial food poisoning and intestinal infectious diseases are prone to occur. Therefore, students should pay great attention to food hygiene and safety to prevent food-borne diseases such as food poisoning.

1. When buying food, carefully check the name, address, production date, shelf life, etc. Try to choose fresh food with short storage time, and don't buy "three noes" food and expired food. 2. Don't buy untested meat, poultry with unknown cause of death and aquatic products.

Don't buy cooked meat, cold salad, cold noodles and other foods sold by roadside "unlicensed" vendors. 3. The food safety risk of eating raw aquatic products in summer is high. Eat less or not eat raw aquatic products such as grilled shrimp, clam, drunken shrimp and drunken crab.

4. Processed stews and cooked meat foods should not be stored for more than 2 hours, and should be fully heated for more than 2 hours. Vegetables and fruits processed with cold salad must be washed and disinfected before eating.

Don't eat fruits, vegetables and wild food without permission. The melons and fruits eaten directly should be thoroughly washed with clear water and peeled as much as possible.

6. When eating out, you should choose catering units with good sanitary conditions and valid food hygiene licenses. Wash your hands before meals, use public chopsticks as much as possible, and advocate separate meals.

When eating, you should pay attention to distinguish whether the food has gone bad and whether there are foreign bodies. Don't eat illegal food, and don't overeat. 7. The temperature is high in summer. Eating cold drinks at the right time can relieve summer heat and quench thirst, which is good for your health.

Cold drinks should not be eaten too much, and cold drinks should not be eaten when sweating a lot, before and after meals, or after drinking hot drinks. When buying cold drinks, carefully check the production date and shelf life, and try to choose products with close factory date; Don't drink unclean water or raw tap water.

8. In case of suspected food poisoning, immediately stop eating suspicious food, organize treatment as soon as possible, and report to the local health administrative department so as to get timely investigation and treatment, and avoid food poisoning incidents that cannot be identified due to time delay. Third, the prevention of heatstroke safety knowledge heatstroke is one of the common acute fevers in hot summer. Mild patients may have dizziness, headache, nausea, thirst, sweating, palpitations, flushing, body temperature may rise above 38℃, and even collapse symptoms such as decreased blood pressure and accelerated pulse.

In severe cases, the symptoms are high fever (body temperature above 4 1℃), anhidrosis, vague speech consciousness, hand and foot convulsions and disturbance of consciousness. In severe cases, there are critical diseases such as shock, heart failure, pulmonary edema and brain edema. So everyone should pay attention to heatstroke prevention.

1. Wear loose clothes with good air permeability and light color; Wear an insulated sun hat; Drink more salt and boiled water; The indoor and outdoor temperature difference of air conditioner should not be too large. The indoor and outdoor temperature difference of air conditioner shall not exceed 5 degrees; Prepare heatstroke prevention drugs such as Dan, cooling oil, essential balm, ten drops of water and mint tablets.

2. When heatstroke occurs, the patient should be carried to a cool and ventilated place to lie down and rest first, then unbutton the button for the patient, apply a cold water towel to the patient's head and neck, and let the patient drink more water (preferably warm salt water or watermelon juice), and take heatstroke prevention drugs such as Ren Dan and ten drops of water. If the condition is serious, you should be sent to the hospital for treatment or call 120 emergency number.

4. Common sense of flood control and water safety. In a short period of time, if there is continuous rainstorm in an area, the river will rise violently, overflow dams, flood farmland and villages, destroy roads, bridges and houses, and cause casualties and property losses. Therefore, students should attach great importance to flood control safety.

1. Insist on listening to the weather forecast every day, keep abreast of local weather changes, and pay attention to weather signs: it is sultry in the morning, and even difficult to breathe, which is generally a sign that the low-pressure weather system is approaching, and heavy rainfall often occurs in the afternoon; In the morning, I see the pagoda-shaped ink cloud uplift in the distance, and there will usually be strong thunderstorms in the afternoon; For several days in a row, the weather was clear and cloudless, especially hot. Suddenly, I saw a small cloud rising on the windward slope of the mountain, and there was usually a strong thunderstorm at midnight or early morning. When you see funnel-shaped clouds or dragon's tail clouds on the horizon, it means that the weather is extremely unstable and there is the possibility of thunderstorms and strong winds at any time. 2. Don't watch the flood; Don't walk under the mountain, don't walk in low-lying places, and don't stay in ravines and low-lying places; Don't shelter from the rain under trees, fences and rocks; Don't cross the river if you don't know the water.

3. Move as soon as the flood comes. When it is too late to move, you should immediately climb the roof, tall buildings, big trees, high walls and other places to temporarily avoid danger.

At the same time, seek help from the outside world by calling for help, making fireworks and waving colorful clothes. If there are floating objects such as boats, rafts, door panels, barrels, pots and cans, you can save yourself.

4. In case of landslide, you should look around quickly and disperse to a safer place. When evacuating, it is very dangerous to run in both directions as the best direction, whether to run down or up.

Verb (abbreviation for verb) Swimming safety common sense Swimming is a very beneficial exercise in summer, which can not only achieve the purpose of exercising, but also play a role in cooling off the heat and enjoying the body and mind. The most important thing about swimming in summer is safety, and we must not take it lightly. Generally speaking, we should pay attention to the following questions when participating in swimming:

4. Safety knowledge in summer

First, food safety.

1. Pay attention to the shelf life when buying all kinds of packaged foods.

2. Try to eat boiled food, eat less cold dishes and lettuce, do not eat rotten food, do not eat leftovers, and do not drink polluted and unclean water.

Try not to eat outside school. If you go out to eat, you should choose a clean restaurant. Don't eat in places with large floating population and susceptible to epidemic diseases, and don't eat in unlicensed stalls.

If you feel unwell, you should seek medical advice in time. For unexpected situations such as sudden food poisoning, you should immediately call 120 emergency number and report to the teacher in your department.

Second, swimming safety

1. You are not allowed to swim or engage in other dangerous activities in rivers, lakes, seas, reservoirs and ponds without the consent of the College.

2. It is strictly forbidden to swim in the water without permission, to swim with classmates without permission, and to swim in unsafe waters, especially the ravines and hidden pits left by field construction (including artificial lakes in the hospital).

3. When someone falls into the water, call for help and call the police in time. When you don't have the ability to save yourself, don't try to be brave and blindly go into the water to rescue.

4. When swimming in a regular swimming pool with complete facilities, it is not suitable to swim when you are hungry, tired or have signs of unhealthy, and the swimming time should not be too long.

5, found that students have the above situation, timely report to teachers and colleges.

Three. Property and personal safety

1. Establish anti-theft awareness, close doors and windows when going out or at night, and organize and keep personal belongings, especially valuables such as mobile phones and computers.

2. When using electric mosquito-repellent incense and incense to repel mosquitoes, don't put the lit mosquito-repellent incense near furniture and other items, so as not to ignite the items and cause a fire.

3. Try not to leave school at night, and don't go to places that are easy to cause trouble, such as game halls, video halls, dance halls and skating rinks; Access to Internet cafes must comply with relevant safety management regulations, so as not to affect normal study and life to the maximum extent.

4. The original Fengda Oil Plant affiliated to our hospital has complex terrain. Because it's useless, abandoned wells and ponds are still there, and even people are hiding. Don't go into the factory.

5. When going out, obey the law, don't join illegal organizations or engage in things that harm the interests of the state, society, collectives and others, return to school on time and don't go home late. It is forbidden to stay outside at night.

6. When participating in off-campus work-study programs, try to find a job through formal intermediary channels, be good at learning and accumulating relevant knowledge and experience, keep a clear head, and prevent you from entering the black intermediary or even pyramid schemes.

Fourth, traffic safety.

1, consciously abide by traffic laws and regulations, do not cross the road, pay attention to traffic when crossing the road, and try to take the crosswalk.

2, walking on the road, should take the sidewalk, walk on the right when there is no sidewalk.

Don't run the red light, and don't enter the places marked "No Pass" and "Danger".

4. Get on and off the bus in turn after stopping at the school bus and local bus.

5. When going out, don't take illegally operated vehicles, overloaded vehicles or vehicles in poor condition.

Verb (abbreviation for verb) girl's safety

1, summer is the season when girls are vulnerable, so girls should pay more attention to personal safety. Wear decent clothes, don't be too exposed, and always close the doors, windows and curtains in the room.

2. generally don't go out at night. If you really need to go out, you should go together and tell other students in the same dormitory the direction and contact information. Remember to return it in time and don't stay outside the school. In principle, I don't go to other people's homes to tutor.

When chatting and making friends online, don't trust others easily, and don't meet netizens easily.

When walking on the road with a bag on your back, you should pay attention to whether there are motorcycles and cars that are driving slowly or parked on the side but have started and can be started at any time.

5. When participating in social activities or interacting with men alone, be careful about yourself, especially don't drink, or even drink. Advocate self-respect and self-love, and rationally handle problems and contradictions in the process of male-female communication.

5. What are the safety precautions in summer?

Safety precautions in summer include:

1. Thunderstorm safety matters;

2. Food hygiene and safety matters;

3. Safety matters of heatstroke;

4. Common sense of flood safety;

5. Swimming safety is very important.

preventive measure

1. Summer is a season with frequent thunderstorms, and lightning casualties occur from time to time. Therefore, everyone should attach great importance to the integrity of thunderstorm days.

2. In summer, the weather is hot, the temperature is high, the humidity is high, the reproduction speed of pathogenic microorganisms is accelerated, food is easy to rot and deteriorate, and bacterial food poisoning and intestinal infectious diseases are prone to occur. Therefore, students should pay great attention to food hygiene and safety to prevent food-borne diseases such as food poisoning.

3. Heatstroke is one of the common acute fevers in hot summer. Mild patients may have dizziness, headache, nausea, thirst, sweating, palpitations, flushing, body temperature may rise above 38℃, and even collapse symptoms such as decreased blood pressure and accelerated pulse. So everyone should pay attention to heatstroke prevention.

4. In case of continuous rainstorm in a short time, the river will rise violently, overflow dams, flood farmland and villages, destroy roads, bridges and houses, and cause casualties and property losses. Therefore, we should attach great importance to flood control safety.

Swimming in summer is a very beneficial exercise, which can not only achieve the purpose of physical exercise, but also play a role in cooling off the heat and enjoying the body and mind. The most important thing about swimming in summer is safety, and we must not take it lightly.

6. What are the safety tips about summer vacation?

Pay attention to accidents caused by drowning, traffic accidents, falls, animal bites and gas leakage.

(1) Life safety:

① Pay attention to electricity safety. Before using electrical appliances at home, carefully check the power supply, use electricity according to the requirements, and do not connect wires indiscriminately; Turn off the relevant plugs after using electricity; Pay attention to safety precautions when using electricity.

② Pay attention to gas safety. Learn to use gas correctly to prevent accidents such as gas leakage; Be careful not to take a bath with a water heater when you are alone at home.

③ Pay attention to food safety. During the summer vacation, the temperature is high and the food quality is difficult. Be careful not to eat expired and spoiled food, and be careful not to eat too much spicy food or cold dishes to prevent diseases such as gastrointestinal discomfort.

④ Pay attention to prevent "air conditioning disease". In hot summer, don't covet coolness, stay in a closed room for too long, and pay attention to the temperature difference inside and outside the air-conditioned room.

⑤ Pay attention to daily life and rest. Pay attention to the daily routine after the holiday, don't stay up late, stay up late, stay in bed, and keep warm at night to prevent colds.

(2) Go out safely

(1) pay attention to the safety of the car and strengthen the awareness of travel safety. Please remember that good traffic habits are the guarantee of your own traffic safety.

(2) Pay attention to property safety and strengthen safety awareness. When going out shopping or playing, you should take good care of your belongings to prevent them from being stolen or robbed.

③ Pay attention to personal safety and strengthen self-protection awareness. When you are away from home, you should pay attention to explaining your whereabouts to your family. Don't go to a remote place alone or go out later.

(3) Health and safety

① Pay attention to personal injury. Pay attention to the careful use of coal and electricity at home, the use of knives and dangerous goods, and climb up and down when doing homework.

② Pay attention to network security. There are many games, movies and even bad things in the network, which will make students addicted to them and affect their normal life and personality; In addition, there are many hidden dangers in the black internet bar itself, which will cause harm to students.

③ Pay attention to night safety. The environment and personnel of the night show are complex, and there are often fights and even some illegal acts (such as drug abuse and drug trafficking), which will poison simple-minded students.

④ Pay attention to the safety of the disc yard. Under the condition of imperfect disc management, some bad discs such as violence, terror and pornography will have a bad influence on students' thoughts.

7. 20 words for summer heatstroke prevention tips in the third grade.

(1) What is heatstroke?

Heatstroke is caused by people's continuous exposure to high temperature or sunlight, which often occurs when standing for a long time, working, walking in the scorching sun. Mild heatstroke can cause dizziness, tinnitus, chest tightness, palpitation, limb weakness, thirst and nausea; Severe heatstroke may be accompanied by high fever, coma and spasm.

(2) How to prevent heatstroke in outdoor activities?

1. Drink water. After sweating a lot, you should replenish water in time. When going out for activities, especially hiking, mountain climbing or going to places where water is scarce, you must bring enough water. If conditions permit, you can also bring some thirst-quenching foods such as fruits.

2. Calm down. Be prepared for sun protection before going out for activities. It is best to prepare umbrellas, sun hats and light-colored clothes with good breathability. Once there are signs of heatstroke when going out, you should take immediate measures to find a cool and ventilated place, untie your collar and lower your body temperature.

3. Prepare medicine. You can take some medicines with you, such as Ren Dan, 10 water and Huoxiang Zhengqi water, to relieve the symptoms of mild heatstroke. If the symptoms of heatstroke are serious, you should be sent to the hospital immediately.

(3) What else should we pay attention to in preventing heatstroke?

1. Summer recess activities should not be large, and strenuous exercise should be avoided. Large amount of activity, sweating, easy to get heatstroke.

In summer, the days are long, the nights are short and the weather is hot, so people don't get enough sleep. Taking a nap can effectively supplement their sleep, avoid the high temperature period at noon and reduce the possibility of heatstroke, which is not only beneficial to their health, but also ensures that they have enough energy to study.

On May 19, in order to do a good job in campus safety and ensure the safety of teachers and students, Liancheng Primary School launched a multi-level and all-round special safety education activity to prevent drowning and heatstroke in the whole school according to the actual situation of the school. It is forbidden for students to catch fish and swim in the river after school. At the same time, students are also educated on heatstroke prevention and cooling, reminding students not to move and play outdoors in high temperature to avoid heatstroke.

First of all, schools should actively create a safety education atmosphere of "preventing drowning". Through campus broadcasting, posting slogans, publishing blackboard newspapers with the theme of safety education against drowning, etc. To publicize the knowledge of drowning prevention to all students, and to systematically educate students on the safety knowledge of drowning prevention, so that students can have a broader and deeper understanding of safety knowledge.

The second is the linkage between home and school, * * * to do a good job in preventing students from drowning. By contacting parents, remind parents of precautions against drowning during holidays and school hours, enhance parents' safety awareness, and earnestly assume the responsibility of guardians. Regularly educate children to abide by the relevant regulations of the school, and establish a linkage mechanism between the school and parents to prevent drowning accidents.

The third is to strengthen daily management. Strengthen discipline education such as student management, duty, students going out for leave, and going to school. The head teacher and teachers in each class should count the number of students before class, find out the reasons why students are not in school and get in touch with parents in time. Students are not allowed to swim in the water without permission; Don't swim with others without authorization; You are not allowed to swim without parents or teachers; It is not allowed to swim in waters without safety facilities and ambulance personnel; Swimming in unfamiliar waters is not allowed. We must prevent safety accidents caused by swimming, and nip them in the bud.

8. Tips for heatstroke prevention in summer

How to prevent heatstroke in hot summer In recent days, hot weather has scorched the land of Sanjin, and people from major hospitals in the provincial capital have come to see a doctor for heatstroke.

To this end, this edition will provide you with some tips for heatstroke prevention and cooling. I hope it can provide you with a cool and comfortable life. Compared with ordinary people, some people with poor health or other diseases are more prone to heatstroke, so in hot weather, they and their families should pay more attention.

Due to the atrophy of sweat glands, the function of circulatory system declines in the elderly, and the body is not well cooled. Pregnant and lying-in women are weak because of their great physical exertion during pregnancy or postpartum. If they stay indoors with poor ventilation and high temperature, they are prone to heatstroke.

Infants and young children have underdeveloped systems, poor thermoregulation function and more subcutaneous fat, which is not conducive to heat dissipation. Hot weather will excite the sympathetic nerves of patients with cardiovascular diseases and increase the cardiovascular load.

Especially for people with heart failure, the heat in the body can not be distributed and accumulated in time, which is easy to suffer from heatstroke. The body of diabetic patients is slow to respond to the temperature changes in the internal and external environment. Although heat has accumulated in the body, patients' symptoms of consciousness appear late, which is easy to cause heatstroke.

Some patients with infectious diseases, because bacterial or viral infection can make the human body produce endogenous pyrogen, so that the body can accelerate the production of heat. Inflammation can also cause the body to release some substances, causing vasospasm and contraction, which is not conducive to heat dissipation and is prone to heatstroke.

The blood pressure of malnourished people drops because of lack of nutrition, which reflexively causes vasoconstriction. They are also prone to recurrent diarrhea, leading to dehydration and electrolyte disorders and heatstroke.

People who take antihistamines, anticholinergic drugs, sleeping pills, etc. There will also be vasoconstriction, which will lead to disorder of thermoregulation center and easy heatstroke. Drink more light salt water, go out less in the afternoon, and most of the heatstroke victims in summer are migrant workers.

The main factors leading to heatstroke are high labor intensity, long working hours, poor living environment, stuffy and unventilated rooms and malnutrition. In addition, patients who are old and weak, pregnant, obese, hyperthyroidism, diabetes and cardiovascular diseases are also prone to heatstroke.

Therefore, once dizziness, fatigue, dry mouth, nausea and vomiting, fever, convulsions, convulsions, anhidrosis, dyspnea and other symptoms appear. When it happens, you should immediately rest in a cool and ventilated place or wet compress with cold water and ice water, and then go to the hospital immediately. If the treatment is not timely, it will easily lead to complications and even death. In order to prevent the occurrence of heatstroke, in addition to avoiding going out from the morning to 2: 00 pm in the most sunny 10, necessary protective measures should be taken: ① keep indoor ventilation, lower the room temperature, and at least have an electric fan to cool down; ② Working hours at high temperature should not be too long, and should not exceed 8 hours every day; (3) Reduce labor intensity, prepare heatstroke prevention and cooling drinks, and supplement brackish boiled water or salty drinks as much as possible; Ensure adequate sleep and eat more nutritious fruits and vegetables.

⑤ Try to penetrate the air-cooled cotton-padded jacket. A good drink in summer is hot tea. What kind of drink is better? Chinese medicine believes that only hot tea belongs to it.

Modern medical research shows that caffeine, theobromine, theophylline and aromatic substances dissolved in hot tea can excite the brain, which is beneficial to the regulation of body temperature center, and can strengthen the heart and diuresis, promote blood circulation, increase renal blood flow, accelerate metabolism, and make excess heat in the body excrete with urine. Drinking hot tea can promote blood flow to the body surface, open sweat pores, relax sweat glands, promote sweat discharge and emit heat.

Some people have determined that drinking hot tea for 9 minutes can reduce the skin temperature 1℃-2℃, and the cooling can last for more than 15 minutes. Old people are thirsty because of lack of body fluids. Tea polyphenols, sugars, amino acids and various aromatic substances contained in tea can stimulate oral mucosa, promote saliva secretion, and play a role in promoting fluid production and quenching thirst.

People suffering from obesity, hyperlipidemia, cardiovascular and cerebrovascular diseases and other chronic diseases are prone to heatstroke in hot summer. Tea polyphenols, vitamin C, ester polysaccharide and other components in tea have the functions of protecting cardiovascular health, reducing cholesterol and blood lipid, protecting hematopoietic function, increasing white blood cells and enhancing disease resistance. Therefore, drinking tea is very beneficial to keep fit and prevent heatstroke. But drinking tea should be scientific, not excessive, and the tea should be light and moderate.

Soybean milk can relieve summer heat and reduce fire. In summer, people sweat a lot and consume a lot of energy. People generally lose weight to varying degrees. On the one hand, it is necessary to relieve summer heat, on the other hand, nutritional supplement is also very important. However, nutrients are lost too quickly in summer and are not easy to absorb; Moreover, tonic is easy to get angry, so summer tonic should be based on balanced nutrition, cooling down and removing fire, and it is not advisable to eat dry tonic.

Do you know that a small cup of soybean milk can not only achieve the purpose of tonic, but also relieve summer heat? Traditional Chinese medicine believes that soybean milk is flat and sweet, and has the effects of promoting fluid production and moistening dryness, "purging stomach fire to treat internal heat" and "benefiting underwater qi and controlling wind heat".

As we all know, mung beans have the effect of relieving summer heat. The "two bean drinks for relieving summer heat" made of soybeans and mung beans has the effects of clearing away heat and relieving summer heat, moistening throat and quenching thirst.

At the same time, it is rich in protein, vitamins, minerals and other nutrients. Regular drinking can balance human nutrition, regulate endocrine, reduce cholesterol, relieve arteriosclerosis, hypertension and protect liver. There is also a kind of soybean milk: lily lotus seed pulp.

Materials: lily 10g, lotus seed meat 10g, tremella10g; 45g mung bean, crystal sugar or honey. Methods: dried lily and lotus seed meat were soaked in warm water until soft; White fungus is boiled with water, washed and picked into small flowers; Soak mung beans fully, wash them with lily, lotus seeds and tremella, put them into the net cover of soybean milk machine, inject appropriate amount of water into the cup, and install the machine in place.

Start the machine, and after ten minutes, the soybean milk with red dates and lotus seeds will be ready. You can add sugar or honey to the cup while it is hot according to your personal preference and stir it evenly.

The summer heat is coming. For special people, many people with poor resistance, such as infants, pregnant women, the elderly and the infirm, will suffer from heatstroke if they are not careful in a high temperature environment. If they are not rescued in time, it may lead to tragedy. Therefore, in hot weather, these special people should take measures to prevent heatstroke and cool down.

Infants and young children: wear thin cotton and light clothes. If you sweat, dry it immediately. Try not to use electric fans or air conditioners. Before going out to play with water, you should choose a sunscreen lotion with a sunscreen coefficient lower than 15 without essence.

The indoor and outdoor temperature difference should not be too large and the room temperature should not be lower than 25℃. It is best to put a basin of water in the air-conditioned room to avoid dryness.

Pregnant women: Clothes should be cool and spacious.

9. What safety knowledge do primary school students have in summer?

Elementary school students' summer safety knowledge 1. How to ensure the safety of camping activities? Most places for outing and camping activities are far away from the city, relatively remote and with poor material conditions. So we should pay attention to the following points: l. Prepare enough food and drinking water.

2. Prepare a flashlight and enough batteries for night lighting. 3. Prepare some common medicines for treating colds, trauma and heatstroke.

4. Wear sports shoes or sports shoes, not leather shoes. Wearing leather shoes for a long time is easy to scratch. It's cold in the morning and evening, so we should add clothes in time to prevent colds.

6. Don't act alone casually in the activity, but walk together to prevent accidents. 7. Pay attention to adequate rest at night to ensure that you have enough energy to participate in activities.

8. Don't pick and eat mushrooms, wild vegetables and wild fruits casually to avoid food poisoning. 9. Adults should organize and lead.