نتایج جستجو برای: inter crystalline structure

تعداد نتایج: 1692196  

Journal: :Journal of Chemical Education 1981

Journal: :The Journal of the Society of Chemical Industry, Japan 1957

Journal: :The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science 1920

Journal: :تحقیقات مهندسی کشاورزی 0
فوژان بدیعی استادیار پژوهش موسسه تحقیقات فنی و مهندسی کشاورزی

the glass transition temperature (tg) and the melting temperature (tm) of gelatin at water contents between 7 and 14% were measured using differential scanning calorimetry.  the plasticisation of the polymer by water led to a decrease in tg and tm. the tg of partially crystalline gelatin was higher than that of the amorphous one obtained by quenching from the melt. the enthalpy relaxation occur...

Journal: :journal of nanostructures 2015
k. hedayati

in this research zinc oxide (zno) nano-crystalline powders were prepared by sol-gel method using zinc acetate. the zno nanoparticles were characterized by x-ray diffraction (xrd), scanning electron microscopy (sem), ultraviolet-visible (uv-vis), fourier transform infra-red (ft-ir) and energy dispersive x-ray (edx) spectroscopy. the structure of nanoparticles was studied using xrd pattern. the c...

Journal: :Journal of cell science 1984
P J Shaw G J Hills

The green alga Chlorogonium elongatum, a member of the Volvocales, possesses a crystalline cell wall composed of hydroxyproline-rich glycoprotein similar to the primary cell wall glycoproteins of higher plants. Electron microscopy and computer image processing have been used to determine the crystal structure of the Chlorogonium cell wall in three dimensions to a resolution of 2.0 nm. The struc...

Journal: :journal of sciences islamic republic of iran 0

in this article, we have investigated the role of dimethylamine (dma), tributylamine (tba), triethanoleamine (tea), trishydroxymethylamine (trizma), and hexamethyleneterraamine (hmta), in the formation of zeolitic compounds. the experiments were carried out in acidic and basic media using si/al< 10 and si/a1>10. the structure of the resulting synthetic zeolites were similar to natro davyne, amm...

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