1. Drug administration. When formulating the edible mushroom culture medium, proper amount of sulfate (calcium sulfate or magnesium sulfate), phosphate (calcium superphosphate or potassium dihydrogen phosphate) and vitamin B1 are added, and 0.1 to 0.2 mg/liter of trisodium is used during the later stage of mycelial growth. Decadecyl alcohol sprayed on the culture material can promote the growth of mushroom and fruit body, and generally can increase production by about 15%.
2. Drill holes and sand. In the edible fungus bed material surface hole filling sand, that is, when sowing with a diameter of 1.5 cm, a 30 cm long conical wood rod, according to the horizontal and vertical rows are 30 cm specifications were plum shape hole , Deep to the bottom, two days later fill the hole with yellow sand (need to be sterilized with 1% potassium permanganate solution), fill 0.5-1 cm above the material surface, and inject 0.3%-0.5 into the hole at the same time. % lime water. This method can improve the air permeability of the mushroom bed, improve the water retention performance of the material surface, and can produce mushrooms in 3 to 4 days in advance. The mushroom buds are evenly distributed and the fruit is thick and thick, and the yield is increased by about 20%.
3. Stress stimulation. The use of old newspapers, sacks, fine soil, etc. to cover the surface of edible fungi culture materials, and to promote the rapid growth of mycelium through pressure stimulation and heat preservation. This method can generally increase production by about 15%.
4. Plug contact. Use a sterile wooden stick (1 cm in diameter and 3 cm in length) to insert into the edible mushroom culture medium, 2 cm in depth and 15 cm in 15 cm in density. When the mycelium grows and spreads and touches a small wooden stick, it can be wound on it. Form a uniform, dense mycelium, and develop into mushroom buds and fruit bodies. This method can generally increase production by about 20%.
5. Sausage bacteria promote bud. After the mycelium is stuffed with bacteria, use a clean bamboo broom to gently sweep back and forth on the surface of the material to remove or destroy the old and delicate hyphae of the surface. After the new hyphae are exposed, spray water and cover the film to moisturize and keep warm. It takes about 7 days. This method can not only promote mushrooming, but also increase production by about 10%.
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The automatic biochemical analyzer is an instrument that measures a specific chemical composition in body fluids according to the principle of photoelectric colorimetry. Due to its fast measurement speed, high accuracy and small consumption of reagents, it has been widely used in hospitals, epidemic prevention stations and family planning service stations at all levels. The combined use can greatly improve the efficiency and benefits of routine biochemical testing.
principle
The automatic analyzer is to automatically run all or part of the steps of sampling, mixing, warm bath (37°C) detection, result calculation, judgment, display and printing results and cleaning in the original manual operation process. Today, biochemical tests are basically automated analysis, and there are fully automatic biochemical analysis systems designed for large or very large clinical laboratories and commercial laboratories, which can be arbitrarily configured according to the laboratory's testing volume.
Whether it is the fastest-running (9600Test/h) modular fully automatic biochemical analyzer today, or the original manual-operated photoelectric colorimeter for colorimetry, the principle is the use of absorption spectroscopy in spectroscopic technology. It is the most basic core of the biochemical instrument.
Optical system: is a key part of ACA. Older ACA systems used halogen tungsten lamps, lenses, color filters, and photocell assemblies. The optical part of the new ACA system has been greatly improved. ACA's beam splitting system can be divided into front splitting and rear splitting due to different light positions. The advanced optical components use a set of lenses between the light source and the cuvette to convert the original light source. The light projected by the lamp passes through the cuvette to bring the beam to the speed of light (unlike traditional wedge beams), so that the spot beam can pass through even the smallest cuvette. Compared with traditional methods, it can save reagent consumption by 40-60%. After the spot beam passes through the cuvette, the spot beam is restored to the original beam through this group of restoration lenses (wide difference correction system), and is divided into several fixed wavelengths (about 10 or more wavelengths) by the grating. The optical/digital signal direct conversion technology is used to directly convert the optical signal in the optical path into a digital signal. It completely eliminates the interference of electromagnetic waves to the signal and the attenuation in the process of signal transmission. At the same time, the optical fiber is used in the signal transmission process, so that the signal can achieve no attenuation, and the test accuracy is improved by nearly 100 times. The closed combination of the optical path system makes the optical path without any maintenance, and the light splitting is accurate and the service life is long.
Constant temperature system: Since the temperature of the biochemical reaction has a great influence on the reaction results, the sensitivity and accuracy of the constant temperature system directly affect the measurement results. The early biochemical instruments used the method of air bath, and later developed into a dry bath with constant temperature liquid circulation which combines the advantages of dry air bath and water bath. The principle is to design a constant temperature tank around the cuvette, and add a stable constant temperature liquid that is odorless, non-polluting, non-evaporating and non-deteriorating in the tank. The constant temperature liquid has a large capacity, good thermal stability and uniformity. The cuvette does not directly contact the constant temperature liquid, which overcomes the characteristics of the water bath type constant temperature being susceptible to pollution and the uneven and unstable air bath.
Sample reaction stirring technology and probe technology: The traditional reaction stirring technology adopts magnetic bead type and vortex stirring type. The current popular stirring technology is a stirring unit composed of multiple groups of stirring rods that imitate the manual cleaning process. When the first group of stirring rods is stirring the sample/reagent or mixed solution, the second group of stirring rods performs high-speed and high-efficiency cleaning at the same time. The set of stirring bars also undergoes a warm water washing and air drying process at the same time. In the design of a single stirring rod, a new type of spiral high-speed rotating stirring is adopted, and the rotation direction is opposite to the spiral direction, thereby increasing the stirring force, the stirred liquid does not foam, and reducing the scattering of light by microbubbles. Reagent and sample probes are based on the principle of early capacitive sensing, but slightly improved to increase the alarm of blood clots and protein clots, and re-test results according to the alarm level, reducing sample aspiration errors and improving the reliability of test results. . Large-scale biochemical instruments can detect more than 1,000 tests per hour, so automatic retesting is very important. Subjective evaluation of test results and manual retesting can no longer meet clinical needs.
Other aspects: barcode recognition of reagents and samples and computer login. Due to the lack of barcode recognition function of early biochemical instruments, there are more opportunities for errors. In recent years, both imported and domestic chemical instruments have adopted barcode detection. The use of this technology in biochemical instruments has provided technical support for the development of high-speed ACA, and also made the instrument quite supportive. The software development is simple and easy, therefore, barcode detection is the basis for the intelligence of the instrument. Open reagents, as an important factor for hospitals to choose models, whether the instrument supports open reagents is very important. After the reagents are opened, hospitals and scientific research units can choose their own reagent suppliers, and have a greater degree of freedom in measuring the price, the reliability of the test results, and the validity period of the reagents. Ion Selective Electrode Analysis Accessory (ISE), human serum and urine electrolyte indicators are very important, and hospitals can save money by adding ISE to the ACA system.
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