with oxygen-enriched air are pumped. it is more economic to use pure oxygen, or oxygen-enriched air, rather than air as this increases the reaction rates and means that smaller chemical plants can be used and fuel cost are reduced. further it makes it easier to ensure that no gases such as sulfur dioxide...
permission of jewish museum berlin, picture jens ziehe. zinc is used in the ordinary dry cell battery (the preferred type for devices that do not need much power, such as remote controls). the zinc is used as the outer casing and the anode at one and the same time. the cathode is a mixture of carbon and manganese...
quality and power of the system to deliver the most value to our customers. our battery electric vehicle (bev) system launches in for bus, and our range extended electric vehicle (reev) system launches in for bus. additional offerings for various other applications are soon to follow. learn more fuel cells...
appear in -shaped forms. yeasts need sugar to grow. they produce alcohol and carbon dioxide from sugar. this reaction makes yeast so important for the food industry. yeasts also produce pleasant aroma components. these aroma compounds play a very important role for the flavour of the end product. in...
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fire extinguisher on trolley is made of seamless manganese... water & foam type british standards institution – bsi approval. • foam type is suitable... fire alarm system a fire alarm system is a set of electronic devices working... fire hydrant system fire hydrant is an active fire protection measure...