The most familiar "stranger" in the human body July 09, 2018 Source: Science and Technology Daily The most abundant element in the human body is oxygen. So what do you know about the most abundant elements in the air? Of course, it will definitely not be an oxygen element, otherwise it will take about 1 second to burn the match. In 1787, after measuring the air content, Lavoisier officially entered the field of vision, which is close to the air of 4/5 of the air. Interestingly, when China first translated nitrogen into Chinese, it wrote “light gasâ€, which means that it “diluted†the oxygen in the air. What happens without "nitrogen"? Then there is no human being Although Lavoisier named "nitrogen" in the past, the original meaning is "no benefit to life." But as the research progressed, scientists found that "nitrogen" is not only an indispensable part of the human body, but also an essential element in the biosphere. It can be said that it is the "most hardworking" gas. "Nitrogen" is one of the basic elements that make up amino acids and also accounts for a large proportion. The protein is made up of amino acids. In the human body, protein is an important component of all cells and tissues in the human body. All activities in the human body involve protein. It can be said that there is no life without protein, and there is no protein without "nitrogen". This shows how important “nitrogen†is to humans. Want to get more "nitrogen"? Eat two more leaves If you think that the way humans get nitrogen is by breathing, then you are wrong. People have to get through it to eat plants. So, where is the nitrogen element in plants? Of course it comes from the soil. Plants grow in a way that converts solar energy into bioenergy through photosynthesis. The most important carrier in the transformation process is the protein. The most critical component of protein is nitrogen. Therefore, the content of nitrogen in plants directly determines the growth of plants. We eat the plants into the stomach, after a series of digestion and absorption, the nitrogen element stays in the body to participate in the human life activities. The role of "nitrogen" in life From the discovery of "nitrogen" to the present, it has been more than 200 years old. We discover it, study it, and use its features to better benefit humans. For example, the potato chips we often eat are always bulging when they are sold. When they are opened, they are found to be gas in the half bag. The half-bag of gas filling is used to protect the potato chips from "nitrogen". In addition, liquid nitrogen will become nitrogen at -195.8 ° C under normal pressure. Therefore, once exposed to air, liquid nitrogen immediately turns into nitrogen. The process of liquid gasification absorbs a large amount of heat. According to this characteristic, more than 100 years ago, people finally solved the problem that surgery has not been anesthetized for a long time. In the dental surgery, liquid nitrogen is placed on the part that needs to be removed, so that the temperature of the painful part is rapidly lowered, and the muscle is temporarily paralyzed. This way, you won't feel pain when you lift your teeth. Nowadays, an ice cream is popular on the market, and it is smoked and eaten. It is also made according to the low melting point of liquid nitrogen.
The Early Pregnancy Test Paper is a product that is convenient for women to detect whether they are pregnant. It can only be used as a primary screening test, and there will be false positives or false negatives. (Also have Fake Pregnancy Test Kit and Paper Pregnancy Test)
Instructions for use: Drop urine into the test hole on the test paper, if a colored band appears in the control area of the test paper (some test paper is red, some test paper is blue), it means negative, indicating that you are not pregnant; otherwise, If there is an obvious color band in the detection area, it means positive, indicating that you are pregnant.
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