منابع مشابه
Materials for the New Millennium- Synthetic Inorganic, Semi-inorganic, and Organic-inorganic Hybrid Polymers
The properties of mineralogical and covalent inorganic polymers are brieffy described in the introductory part. Glass is an important polymer made up of rings and chains of silicate units which contain negatively charged oxygen atoms neutralized by positive metal ions. Glass and few other mineralogical types of inorganic polymers, like aluminum oxyde, could be fabricated into fibers and used as...
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accepted, more obvious evidence is needed. In PPI, return of colonic motility is a hindmost concern; it takes 48 to 72 hours. Sham feeding enhances gastric emptying and increases rectosigmoid pressure activity. However, the influence of gum chewing on colonic motility is not clear. Alvimopan, a peripherally-acting μ-opioid receptor antagonist, was recently approved for the reduction of PPI afte...
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ژورنال
عنوان ژورنال: Nature
سال: 1914
ISSN: 0028-0836,1476-4687
DOI: 10.1038/093481a0