other cells when mounting an immune response. a different population of t cells, the cd + t cells, function as "helper cells". unlike cd + killer t cells, these cd + helper t cells function by indirectly killing cells identified as foreign: they determine if and how other parts of the immune system respond...
"solar's the better deal," he said, noting that california property tax regulations are more favorable for photovoltaic systems than wind energy. but wind does have some advantages, he said. solar cells degrade and become less efficient. new wind turbines can easily last years with proper maintenance...
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is to be protected by thick polythene sheets, the side and end walls must also be protected by thick polythene sheets extending at least cms up the container walls. containers stuffed with battery scrap properly cleaned and packed must be stowed on deck. a written statement from the shipper that batteries...
high-density polyethylene, and perforated drainage pipes in gravel to collect any water that gets through. it's topped with a -foot layer of dirt to protect the drainage and liner system as trucks drive over it. the waste itself is compacted in two, -foot-thick layers separated by two feet of clean fill. the cells...
studying and manipulating chemical reactions is the focus of yogesh surendranath 's research. using chemistry, he works at the molecular level to understand how to efficiently interconvert chemical and electrical energy. his fundamental studies aim to improve energy storage technologies, such as batteries...
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