The invention relates to a sheet-type micro refrigerator applying a lead-free ferroelectric material. The micro refrigerator comprises a multi-layer structure which is composed of a ferroelectric dialectric layer and a metal electrode layer alternatively; the ferroelectric dielectric layer is made o.....
[Detail]
The invention discloses a catalytic asymmetric hydrogenation reaction. Of the present invention is the role of chiral catalyst, H2 of the prochiral unsaturated compounds to addition reaction to obtain the chiral product, wherein the solvent used in the reaction liquid polyethylene glycol compound. T.....
[Detail]
The invention relates to regulate lipid levels herbal preparations. The invention includes a method for preparing the herbal preparation and their use.
[Detail]
For the treatment of fabric or fibers suspended in distilled water solution from 0.1 to 10% of the natural fiber material. Fabric or fibers wetted with the solution 1 to 60 minutes. After wetting the fabric or fibers at a temperature of 80 ~ 160 ℃ dried for 1 to 10 minutes.
[Detail]
Disclosed is an extendible emergency bump guard post arranged underground comprising a base with open top, a post placed in the base not in use and in vertical place in use and a protecting hood movably connected with one end of the base, wherein when the post is located in the vertical or horizonta.....
[Detail]
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