ITER Magnet Feeder:Design,Manufacturing and Integration

The International Thermonuclear Experimental Reactor （ITER） feeder procurement is now well underway. The feeder design has been improved by the feeder teams at the ITER Organization （IO） and the Institute of Plasma Physics, Chinese Academy of Sciences （ASIPP） in the last 2 years along with analyses and qualification activities. The feeder design is being progressively finalized. In addition, the preparation of qualification and manufacturing are well scheduled at ASIPP. This paper mainly presents the design, the overview of manufacturing and the status of integration on the ITER magnet feeders.

β——胡萝卜素对繁殖母猪的作用

母猪的繁殖性能不仅受管理和遗传因素的影响,而且也受营养因素的影响。目前,许多营养学家并不把β—胡萝卜素看成是繁殖猪日粮中的一项重要成分。但是,近来的试验可能会改变他们的观点。 饲喂β—胡萝卜素可以提高猪血液中VA的水平,然而,血液中β—胡萝卜素本身的含量却很少。 直到几年前,人们仍然认为β—胡萝卜素的作用仅在于作为VA的前体物,它可以被VA所代替。60年前,人们就发现了β—