External cooling is to reduce the temperature of the pig's environment, and internal cooling is to reduce the temperature of the pig's body. Compared to both effects, the effect of internal cooling is better than external cooling.
The reason is because internal cooling can release excess heat from the body. For pigs, there are two ways to reduce the temperature: First, by eating or drinking, the cooled feed and drinking water become high-temperature excreta, which will take away a lot of calories; letting the pig drink plenty of water in addition to lowering the water temperature, It should be noted that the salt concentration in summer feeds should be increased. The second is that by sucking in the dry air and turning into moist air, body heat is taken away by evaporation of water in the body. This is the most easily overlooked and very important place. It is important to note here that the concentration of water vapor in the inhaled and exhaled gases is different. If the concentration of water vapor in the inhaled and exhaled gases is the same, then there is no cooling effect; if the concentration is very large, the cooling effect will be very high. Good; to ensure that the pig sucks in the dry air is an important condition for internal cooling, so we often encounter high temperatures but low humidity, the sow will not heat death; and the temperature is not very high, but when the humidity is high Sows will die of heat; the main reason is that cooling does not work.
Most of the Fluorine-Containing Phenylamine products are a light yellow oily liquid, relatively high density, insoluble in water. Most of them are used in the manufacturing of pesticides and dye intermediates, small part of them can be used as an analytical reagent. The steam or smoke of fluorine-Containing Phenylamine series is irritated to eyes, mucous membranes and upper respiratory. Vapor and air can form explosive mixtures, in case of fire, high-heat combustion caused the explosion. And oxidant may react. Decomposition by high fever and emit toxic gases. In case of high fever, increased pressure within containers, cracking and the risk of explosion. Protective measures must be done carefully during product storage. Once the fire occurred, it must be immediately evacuated from air leakage,personnel to a safe area, prohibit access to the contaminated area. Recommended emergency personnel wearing self-contained breathing apparatus and wear chemical protective clothing. In the ambulance personnel to ensure proper safety measures, immediately use foam, carbon dioxide, dry, sandy soil to put out a fire.
Fluorine-Containing Phenylamine
Containing Phenylamine,2-Bromo-4-Methoxy-Phenylamine,5-Fluoro-2-Iodoaniline
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