As soon as autumn comes, a variety of attractive and delicious fruits begin to be listed. Not only do they have the effect of moistening Qiuzao, they also have their own advantages in nutrition.
Grape, the king of antioxidants. The resveratrol contained in grape is a kind of strong anti-oxidant, can resist the senility, and remove the free radicals in the body, have positive prevention and treatment effect to the heart cerebrovascular disease. Need to be reminded that grape cold, spleen and stomach Deficiency people should not eat.
Hawthorn, king of pectin. Pectin is a polysaccharide substance that helps control blood sugar and blood lipids. In addition, hawthorn also contains a large number of flavonoids and organic acids, with anti-cancer, anti-cancer, blood pressure and cholesterol. The general population can eat, especially for indigestion, cardiovascular disease and enteritis patients, but pregnant women, children, excessive gastric acid secretion, physical illness and dental disease after the patient is unfit for human consumption.
Citrus, the king of vitamin B1. Vitamin B1 plays an important role in the signaling of the nervous system. In addition, the content of carotenoids in citrus is also much higher than other autumn fruits. This nutrient can be converted into vitamin A in the body, which has the effect of protecting eyes and eyes. Citrus also contains antioxidant, anti-cancer, anti-allergic ingredients, and can prevent blood clotting, reduce the incidence of coronary heart disease, stroke and high blood pressure.
Pomegranate, the king of dietary fiber. Pomegranate-rich water-soluble dietary fiber is not decomposed by enzymes in the digestive tract, preventing both constipation and diarrhea. In addition, pomegranate seeds are rich in vitamin C and polyphenols, and these substances have the effect of delaying aging. Therefore, when eating pomegranate, chew the seeds. What needs to be reminded is that the pomegranate has astringent effect, and constipated people should eat less.
Fresh dates, Almighty King. Compared with other autumn fruits, fresh dates have a number of nutrient contents, such as vitamin C, potassium, magnesium, iron and zinc. Vitamin C softens blood vessels, prevents hypertension, coronary heart disease, and atherosclerosis. Potassium is good for controlling blood pressure, and magnesium helps fight stress. It needs to be reminded that jujube is hot, phlegm, constipation, stomach patients and diabetics should not eat too much.
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What problems should we pay attention to when using solar energy for power supply?
1. The whole day sunshine time of monitoring points along the expressway shall be considered first. As the main energy of the power supply system comes from sunlight, the sunshine exposure time must be considered, which is particularly prominent in mountainous areas where there is little sunshine, but not in plain areas.
2. Working power, working voltage and current of monitoring facilities along the expressway. After considering the power of the whole load, we can choose the solar panel that is more suitable for the long-term operation of the equipment.
3. If the battery discharge cannot make the monitoring equipment work for a long time, the monitoring system will be paralyzed in the rainy season, but the expressway is prone to accidents in the rainy season.
4. The conversion rate of solar cells is low. At present, the conversion rate of solar cell power supply is only about 20%, that is to say, if the silicon solar cell is spread over a square meter, 100~200W of power can be obtained, which is obviously not enough to meet the long-term operation of the monitoring equipment. Of course, with the development of technology and the improvement of the quality of crystalline silicon cells, we can obtain more power resources in a smaller area in the near future.
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