نتایج جستجو برای: physical and chemical properties
تعداد نتایج: 17019113 فیلتر نتایج به سال:
in this thesis, a new optically active poly(amide-imide) (pai) was synthesized by the indirect polycondensation reaction of the l-phenylalanine based diacid chloride and 4,4?-diaminodiphenylether in the presence of triethylamine in n-methyl-2-pyrrolidone. the formation of pai was confirmed by ftir, 1h nmr and elemental analysis. in next step, the surface of titanium dioxide (tio2) nanoparticles...
چکیده ندارد.
the purpose of this paper was to review the commercially available periodontal dressings, their physical and chemical properties, biocompatibility and therapeutic effects. electronic search of scientific papers from 1956 to 2012 was carried out using pubmed, scopus and wiley interscience search engines using the searched terms periodontal dressing, periodontal pack. numerous in vitro and in viv...
Background and Objectives: In this study, due to the ability of polysaccharides to modify rheological, physical and chemical properties of food products, the effect of feijoa leaf polysaccharides (FLPs) on the physical, chemical and sensory properties of low-fat yogurt during 20 days of storage was investigated. Materials and Methods: Different concentrations of FLPs (1.5, 2.5 and 3.5% w/w) wer...
this article provides an overview on preparation, design, crystal structure and properties of some metal-organic frameworks of carboxylate coordination polymers mixed with pyridine-functionality linkers prepared in our laboratory. the article covers coordination polymers in two- and three-dimensional supramolecular architectures. the reported coordination polymers ex...
Landslides caused many ecological processes at landscape to local scales, including the ecological succession processes. The landslides geological characteristics and their management as physical risks are truly documented but the ecological processes that are caused by landslides and their relations to efforts to restore stability to unstable slopes, have not been well studied. In this study, ...
Due to their unique structural, physical and chemical properties, cyclodextrins derivatives have been of great interest scientists researchers in both academia industry for over a century. Many the industrial applications arisen from ability encapsulate, either partially or fully, other molecules, especially organic compounds. Cyclodextrins are non-toxic oligopolymers glucose that help increase...
Background and Aim: Shampoos are products that remove fat and dust from the hair and scalp. Cleansing and decontamination are the most important properties of a shampoo for its acceptance. To create a stable foam in shampoos, alkaloids are often used which are believed to be carcinogens due to production of nitrosamines. Hence, the main goal of this study was the production of shampoo by using ...
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