The so-called "distant relatives" refers to plants and animals that are relatively far away from human beings in space, in biological relationships, and in the evolution of species. For example, compared with chicken, duck, and geese, fish, shrimp, and geese are farther away from human species; chickens, ducks, geese, and cattle, sheep, and geese are farther from humans than animal husbandry; animal foods are far from animal foods. Humans are closer; wild food is far more than artificially grown food; food in the ocean is farther than food on land. Modern studies have found that "distant relatives" have preserved valuable foods that are not available to the human body from "close relatives". Most of these substances were lost during the evolution of the species. It is precisely because of this relationship that eating is "distant relatives." Better than "neighbors." In fact, the people are also emotionally aware of this, as the saying goes, "It's better to eat four legs than two feet, to eat underground is not as good as flying in the sky, to eat in the sky is better than to swim in the water." This is the truth. Here are some of the "distant relative" foods: fungal mushrooms and human organisms
The relationship between schooling is far away and it is one of the most beneficial foods for human health. Shiitake mushroom contains lentinan, a macromolecule active substance, which can lower blood sugar and cholesterol, improve immunity of the body, and have a preventive effect on a variety of chronic diseases of the elderly. It can also enhance the anti-cancer and anti-oxidation effects of the human body and prevent cancers. Effect. At present, many anti-cancer health products contain lentinan.
Seabuckthorn grows in arid and cold areas in northern China. It is a kind of wild and precious plant that is far away from us. It has recently been confirmed that sea buckthorn is a plant rich in various vitamins and biologically active substances that is rare in nature and has a good medicinal value. It is suitable for embolism such as coronary heart disease, arteriosclerosis, and gastric ulcer, and has antitussive, phlegm, and blood stasis. Heat diarrhea, spleen and kidney and other effects, is a dual-use goods for both drugs and food.
Kelp is far from humans in biological relationships and is also a favorite health food for people. Kelp contains cellulose, crude protein, carbohydrates, mannitol, potassium, iodine, etc., and is a marine food with high nutritional value. Pregnant women often eat kelp, which is extremely beneficial to fetal development, especially the development of the brain's nervous system.
The main components of black fungus are protein, fat, phospholipids, sugar and calcium, phosphorus, iron and other minerals, is a food with excellent food and food. It can reduce the viscosity of blood and dissolve atherosclerotic plaque in arteries of cardiovascular patients. According to the traditional medicine of the motherland, black fungus also has significant functions for the elimination of endogenous foreign bodies such as gallstones, kidney stones, bladder stones, and manure.
Increasing the proportion of “distant relatives†foods is very beneficial to health.
Urine analyzer is an automated instrument for determining certain chemical components in urine. It is an important tool for automated urine inspection in medical laboratories. This instrument has the advantages of simple and fast operation. However, improper use of urine analyzers and many intermediate links and influencing factors directly affect the accuracy of automated analysis results, which will not only cause errors in experimental results, but even delay diagnosis. Therefore, operators are required to understand the principles, performance and precautions of automated instruments. And the knowledge of influencing factors and other aspects are fully understood, and the correct use of automated instruments can make the results obtained by the urine analyzer more reliable and accurate.
application
In the 1950s, a single dry chemical test strip method was used to measure protein and glucose in urine, and the changes in the color of the test strip were observed with the naked eye and compared with the standard plate to obtain the corresponding values. In the 1980s, due to the high development and widespread use of computer technology, automated urine analyzers also developed rapidly, gradually developing from semi-automatic to fully-automated. Urine analyzers are often divided into two categories according to the test items: â‘ 8-11 screening combined urine test strips mainly used for newly diagnosed patients and health examinations. The eight test items included protein, glucose, PH, ketone bodies, bilirubin, urobilinogen, red blood cells (occult blood) and nitrite; in addition to the above eight tests, urine leukocyte test was added to the nine test items. On the basis of 9 of the 10 urine analyzer testing items, the urine specific density test was added. 11 testing items have added vitamin C testing. â‘¡It is mainly used for the observation of the curative effect of the diagnosed diseases, such as the combination test strip of PH, protein and occult blood (red blood cells) for kidney disease; the combination test strip of PH, sugar and ketone body for diabetes; the combination of bilirubin and urobilinogen for liver disease test tape.
principle
This type of instrument is generally controlled by a microcomputer, and the color change on the test strip is measured semi-quantitatively by using a spherical integrator to receive dual-wavelength reflected light. There are several reagent pads containing various reagents on the reagent strip, each of which reacts independently with the corresponding components in the urine, and displays different colors. The depth of the color is proportional to a certain component in the urine, and there is another in the reagent strip" Compensation pad", as the urine background color, compensates for the errors caused by colored urine and instrument changes.
Put the reagent strip with urine adsorbed in the colorimetric tank of the instrument, and the various reagent pads that have produced chemical reactions on the reagent strip are illuminated by the light source, and the reflected light is received by the spherical analyzer, and the photocell of the spherical analyzer is reflected. Irradiate with dual-wavelength light (measurement light passing through the filter and a reference light), and the selection of each wavelength is determined by the detection item.
The instrument automatically calculates the reflectance according to the following formula, and then compares it with the standard curve, and automatically finds and prints the corresponding results of various components. If the content of a certain component in the urine is high, the reflected light of the corresponding reagent pad is dark, otherwise it is strong.
Reflectance fraction: R(%)=Tm.Cs/TsCm×100%
In the formula, R(%) is the reflectivity; Tm is the reflection intensity of the reagent pad to the measurement wavelength; Ts is the reflection intensity of the reagent pad to the reference wavelength; Cm is the reflection intensity of the calibration pad to the measurement defect length; Cs is the calibration pair. Reflection intensity at the reference wavelength.
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