To ensure the supply of essential drugs, the Consumer Products Division of the Ministry of Industry and Information Technology entrusted the Science and Technology Development Center of the China Pharmaceutical Association to carry out the “Research on the Construction of the National Essential Drug Storage System†and the “Special Study on the Supply and Supply of Essential Drugsâ€. The research team conducted a questionnaire survey on 216 basic drug manufacturers in 29 provinces and cities, and investigated 405 prescriptions. After one-by-one analysis and evaluation of 205 essential drugs (chemical drugs), the research team identified 41 types of essential drugs that may not be supplied in time and supply insufficient quantities.
Chu Wengong said that these varieties mainly involve 6 types of drugs, including 7 kinds of anti-microbial drugs such as oxacillin and 6 kinds of nervous system drugs such as amantadine, 6 kinds of cardiovascular system drugs such as procainamide, and 4 types of anti-chloroquine antibiotics. There are 4 kinds of blood system medicines such as parasites and dextran iron, and 3 types of antidotes such as clozapine and other 11 kinds of medicines.
To prevent shortages from happening, the research team recommends the identification of four categories of varieties: appropriate stock varieties such as acetamide, pralidoxime chloride and methylene blue, three kinds of special antidote, these products have low yields, and once there is a shortage, patients will be delayed. Rescue and have a serious social impact. Closely monitoring the variety, a total of 13 kinds, mostly clinical preferred drugs, such as sodium gluconate, chloroquine, anti-venom serum, etc. Although these drugs have a certain amount of production, but often in some areas there is a shortage. The early-warning species involved 24 exclusive production varieties, including antidotes, anti-infectious diseases, first-aid medicines, contraceptives, etc. Once such companies stop production or the demand for drugs rises, the supply will be difficult to guarantee. Market supply varieties can be adjusted through market mechanisms to ensure supply.
Experts remind that for special-purpose detoxification drugs and other appropriate reserves, in addition to national and local reserves, medical institutions should also reserve in appropriate amounts; for early-warning varieties, the competent authorities should encourage registration, change the situation of exclusive production, and closely monitor the production capacity of the relevant species of the enterprise. Change; For the market supply varieties, we must pay attention to the impact of price and other factors on their supply, and avoid temporary shortages. (
We may have ever heard of the Bullet Fixed Focus Camera/ Fixed Focus Bullet Camera HD/ Bullet Fixed Focus Journal Camera/ Fixed Focus Bullet Camera IR/ Fixed Focus Bullet Surveillance Cameras/ Fixed Focus Analog Bullet Cameras, so what is the Bullet Fixed Focus Camera? We know that the Bullet refers to the camera shape, so what about the Fixed Focus? Actually, the Fixed Focus refers to a type of the camera lens. Today let me introduce the camera lens for you.
The camera lens is the key equipment of the video system. The lens' quality (index) directly affects the overall index of the camera. The lens is equivalent to the lens of the human eye. As you know, if there is no lens, the human eye cannot see anything. That is to say, if there is no lens, then the output image of the camera will just be white without any clear image output; which is consistent with the principle of our home cameras.
Actually, there are many classifications for the camera lens. Today please let me introduce one classification for you---the classification according to the structure.
1. The fixed focus lens with the fixed aperture
The lens has only one focus adjustment ring that can be manually adjusted. Rotating the ring left and right can make the image on the CCD target surface clearest. There is no aperture adjustment ring, so the aperture cannot be adjusted, and the luminous flux entering the lens cannot be changed by changing the lens factors, but can only be adjusted by changing the illuminance of the shooting site. The structure is simple and the price is cheap.
2. The fixed focus lens with the manual iris
Compared with fixed focus lens with the fixed aperture, the fixed focus lens with the manual iris has an extra aperture adjustment ring. The aperture range is generally from F1.2 or F1.4 to fully closed, which can easily adapt to the illuminance of the shooting site, and the aperture adjustment is done manually. The illuminance is uniform and the price is cheap.
3. The fixed focus lens with the automatic iris
Compared with the fixed focus lens with the manual iris, the fixed focus lens with the automatic iris has an extra gear-driven micro motor on the iris adjustment ring, and a 3 or 4-core shielded wire is drawn from the drive circuit, then connected to the camera's automatic iris interface seat. When the luminous flux entering the lens changes, the charge generated by the CCD target surface of the camera changes accordingly, thenthe video signal level changes, and a control signal will be generated and transmitted to the automatic iris lens, so that the motor in the lens can perform the corresponding rotation to complete the task of resizing.
4.The electric zoom lens with the automatic iris
Compared with the fixed focus lens with the automatic iris, the electric zoom lens with the automatic iris two extra micro motors. One motor is connected with the zoom ring of the lens, and can control the focal length of the lens when it rotates; the other motor is connected with the focus ring of the lens, and it can complete the focus of the lens When it rotates with control from the former motor. However, due to the addition of two motors and an increase in the number of lens groups, the size of the lens has also increased accordingly.
All in all, it would be helpful to know about the camera lens if you want to know more about the Bullet Fixed Focus Camera and the whole video monitoring field.
Bullet Fixed Focus Camera, Fixed Focus Bullet Camera HD, Bullet Fixed Focus Journal Camera, Fixed Focus Bullet Camera IR, Fixed Focus Bullet Surveillance Cameras, Fixed Focus Analog Bullet Cameras
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