What Is Transitional Epithelium?

Seasons are several time periods in which the geographical landscapes that appear cyclically each year are relatively different. The two seasons with very different properties such as temperature and humidity are called transition seasons. Spring and fall of the year are considered transitional seasons.

Spring and autumn are both transitional seasons, and the cold and warm air forces are equal and active. Wang Anshi once used such a poem to describe the contradictory mood of the spring climate: "Spring breeze is sometimes good, spring breeze is sometimes bad, and the spring breeze cannot bloom, and the flowers are blown away by the wind." It describes the spring weather changing. The spring and autumn climate has the following characteristics:

(1) Large temperature change

People generally regard spring as the beginning of the year. Vientiane is renewed and vibrant. However, spring is also the period when the weather changes the most during the year. It is a period when the temperature is warm and cold and the temperature changes suddenly. The temperature varies most during the day in spring.

Autumn is the transition season before entering winter, and it is susceptible to cold air. The temperature also changes abnormally. The temperature difference between morning and evening increases. In autumn, the day becomes shorter, the night becomes longer, the air pressure rises, and the temperature drops.

(2) How strong is the dry air?

Spring is in the period of atmospheric circulation adjustment, and cold and warm air activities are frequent. In addition to large changes in temperature, dry and windy weather is another feature. Spring is the transition season between winter and summer. The cold and warm air forces are equal and very active. Therefore, windy weather often occurs, especially in northern China, which is characterized by alternating north-south gale and strong wind. Generally, the phenomenon of frequent north-south gale will improve after May. The arrival of a windy weather brought cold air, the temperature dropped, and the humidity of the air was reduced.

Autumn temperature began to fall, rainfall decreased, air humidity was relatively reduced, the climate was dry, the air lacked moisture, and the human body also lacked moisture, which was prone to "autumn dryness", so the focus of autumn health care was on lungs.

(3) Sandy weather in the north

With the rise of air temperature in spring, if there is less precipitation some time ago and the ground is dry, when the strong wind comes, sand and dust weather will easily occur. Meteorological sand and dust weather is divided into floating dust, sand, and dust storms. In the northern regions of China, March and April are still frequent periods of sand and dust weather.

The cold and warm air meets frequently during the transitional season, and the weather is changeable. It is suitable for the breeding of various pathogenic microorganisms, and the resistance of the respiratory tract decreases. Disease, we must take measures to actively prevent and comprehensive control. Common infectious diseases such as:

1. Symptoms of Influenza: Generally manifested as acute onset, with obvious symptoms of systemic poisoning such as fever, fatigue, headache and general soreness, and mild respiratory symptoms such as cough and runny nose.

2. Symptoms of rubella: clinical features are low fever, rash and enlarged lymph nodes behind the ears and occipital, and the systemic symptoms are mild.

3. Symptoms of tuberculosis: It is a chronic infectious disease, mainly manifested as fever, night sweats, general malaise and cough, expectoration, hemoptysis, chest pain, dyspnea and so on.

4. Epidemic parotitis symptoms: characterized by acute swelling and pain of the parotid gland accompanied by fever and general malaise.

5. Chickenpox Symptoms: Systemic symptoms are mild, and skin and mucous membranes appear in batches with rapid development of spotted rash, pimples, herpes, and rash.

6. Symptoms of measles: Symptoms include fever, cough, runny nose, conjunctival congestion, oral mucosa with measles plaques and maculopapular rash on the skin.

7. Meningococcal symptoms: mainly manifested as sudden high fever, severe headache, frequent vomiting, skin and mucous membrane ecchymosis, irritability, severe cases may appear neck rigidity, mental disturbance and convulsions.

As far as possible in the prevention and control of infectious diseases:

1. Pay attention to opening the window moderately for ventilation. Care must be taken to keep the room temperature relatively constant. In the morning, pay attention to opening the window for ventilation, vomiting new air, and always keep the room clean and fresh.

2. Pay attention to adding or removing clothes in a timely manner. The weather in the transitional season is cold and hot, and is very changeable. At the same time, the body's resistance is also in a low state. Therefore, be sure to increase or decrease your clothes at any time as the temperature changes to prevent colds.

3, often participate in outdoor activities. Spring and autumn are the best seasons for outdoor activities. Try to participate in some outdoor activities within your ability.

4, to maintain the rules of daily life. To maintain a normal lifestyle, to ensure adequate sleep, to avoid overwork, not to overdo things, you should be open-minded, calm, and optimistic to enhance the body's resistance to disease.

5. Avoid going to public places. People in public places are noisy and the air is dirty, which is an important place for epidemic diseases. People with respiratory infections and intestinal infections need to be conscious of going to public places to avoid transmission to others.

6. Pay attention to personal hygiene. Wash your hands with running water and soap immediately before, after meals, when you return home. It is best to wash your eyes and nasal cavity more than twice a day with clean water to ensure eye and nose hygiene. When sneezing or coughing, cover your nose and mouth with a handkerchief and don't spit.

7, often turn clothes and bedding. The futon is prone to germs when wet. Ultraviolet rays in sunlight can effectively kill germs. Therefore, it is necessary to wash clothes and bedding frequently without leaving any dead spots.