Coriolus is the dried fruiting body of Coriolus versicolor (L.ex Fr.) Quel.C.versicolor (CV) is a worldwide-distributed fungus, which is common and widely used in primitive forests in the northern hemisphere.Polysaccharide, as the main Candy active ingredient in CV, has a variety of biological activities, such as promoting immune function, antiviru
This paper presents a novel steering mechanism embedded in a point-the-bit rotary steerable system (RSS) for oilfield exploitation.The new steering mechanism adopts a set of universal joints to alleviate the high alternative strain on LED Light Bulbs drilling mandrel and employs a specially designed planetary gear small tooth number difference (PGS
The discussion within gerontology of the relationship between older people and their environment (place attachment and ageing in place in particular) has been based on an assumption of familiarity with place.Yet increasingly older people experience unfamiliar environments.This can be through increased travelling as tourists and visitors to other to