Oil cooler inspection technology

Although the oil coolers of the 4105 series diesel engines are all of different sizes but have the same structure, they are all the cores of the network structure. The ends of the oil coolers are finished with tin dip soldering. If the end is not welded due to loose welding or other reasons, it will cause a short circuit in the oil and water. If the situation is serious, the oil pressure will be higher than the pressure of the cooling water during work, and the oil will quickly leak out and be hard to detect. Therefore, according to the instruction manual, check the oil level of the oil sump in the oil sump every day, and check whether there is any oil in the cooling water in the radiator tank. If there is any abnormality, be sure to be vigilant and work after finding out the reason.
Inspection of the oil cooler can be performed with pressurized air or tap water. Newly-purchased oil coolers should be installed after being pressurized for inspection; before the old diesel engine is deactivated for a period of time before use, the condition of the oil coolers should also be checked.

Nootropic Products

In China, nervous system drugs are also one of the drugs with the most rapid sales growth in recent years. In 2002, nervous system drugs occupied 5.9% of the entire pharmaceutical market share, and the total sales amount increased by 9.4%.
With the increasing trend of urbanization and aging, the elderly population in China has exceeded 120 million, and the incidence of geriatric diseases, especially mental diseases, is increasing year by year. With the increase of residents' income, the elderly's requirements for quality of life also increase. As a result, the demand for drugs to treat mental illnesses such as Alzheimer's has soared. In WHO drug classification, psychotropic drugs and nootropic drugs are grouped into one class. We briefly analyzed the development trend of this class of drugs through the clinical drug use data collected from more than 300 domestic key hospitals by Chinese Pharmaceutical Association.
The overall market size of this class of drugs is about 1.22 billion yuan, the consumption sum increased by 5.0% in 2002, but the sales quantity increased by 11.2%. The main reason why the consumption sum did not increase with the sales quantity is that several main varieties of this class of drugs, such as piracetam, cobalt bin amide and ginkgo biloba leaf, etc. In 2002, the price of selling units fell sharply due to bidding. Among these drugs, ginkgo biloba preparation occupies the largest market share, accounting for more than 1/3 of the market share, ganglioside ester and cobalt bin amide combined also occupy nearly 1/3 of the market share, piracetam and other "sitan" drugs occupy nearly 10% of the market share, the rest of the drugs occupy less than 5% of the market share. At present, more than 20 ginkgo leaf production enterprises, piracetam production enterprises more than 70, have entered the stage of price competition, profit repeatedly diluted.
In the first-line varieties, except ginkgo biloba leaves preparation maintained vigorous vitality, the growth of other varieties were weak, especially the traditional variety piracetam suffered from bidding

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