نتایج جستجو برای: concepts such as sublimation
تعداد نتایج: 6016705 فیلتر نتایج به سال:
Social scientists strongly believe that cultural norms and values shape, stimulate, direct, and influence all activities of human societies. This study attempts to provide a sociological analysis of cultural components, in particular the content of the proverbs included in Dehkhoda's Amsal va Hekam (Proverbs and Parables) and their role in Iran's underdevelopment. This book was chosen ...
in this thesis, we exploit a simple and suitable method for immobilization of copper(ii) complex of 4?-phenyl-terpyridine on activated multi-walled carbon nanotubes [amwcnts-o-cu(ii)-phtpy]. this nanostructure was characterized by various physico-chemical techniques. to ensure the efficiency and fidelity of copper species, the implementation of three-component strategies in click-chemistry all...
cement is an essential ingredient in the concrete buildings. for production of cement considerable amount of fossil fuel and electrical energy is consumed. on the other hand for generating one tone of portland cement, nearly one ton of carbon dioxide is released. it shows that 7 percent of the total released carbon dioxide in the world relates to the cement industry. considering ecological issu...
the history of plant’s used for mankind is as old as the start of humankind. initially, people used plants for their nutritional proposes but after the discovery of medicinal properties, this natural ?ora became a useful source of disease cure and health improvement across various human communities. berberis vulgaris is one of the medicinal plants used in iranian traditional medicine. berberis ...
The subject of this paper is the attempt to reproduce the CO observed production rate curve of comet Hale-Bopp with a numerical model of the nucleus thermal evolution and chemical differentiation. Three possible mechanisms can contribute to the total measured CO production: 1) sublimation of CO from the nucleus; 2) release of gas of CO trapped in the amorphous water ice in the nucleus; 3) emiss...
abstract:assume that y is a banach space such that r(y ) ? 2, where r(.) is garc?a-falset’s coefficient. and x is a banach space which can be continuously embedded in y . we prove that x can be renormed to satisfy the weak fixed point property (w-fpp). on the other hand, assume that k is a scattered compact topological space such that k(!) = ? ; and c(k) is the space of all real continuous ...
?it is of utmost priority for an experienced teacher to train the mind of the students, and enable them to think critically and correctly. the most important question here is that how to develop such a crucial ability? this study examines a new way to the development of critical thinking utilizing critical discourse analytical tools. to attain this goal, two classes of senior english la...
It is commonly accepted that properties of epitaxial graphene (EG) grown on SiC are determined by interaction with substrate. It was found, that hydrogen intercalation of EG grown on SiC(0001) substrates by sublimation is a promising method to increase the mobility of carriers [1]. As verified by Raman spectroscopy [2] sublimation grown samples show much stronger interaction with the SiC substr...
We have observed about 16 absorption lines of the ν2 SO2 vibrational band on Io, in disk-integrated 19 μm spectra taken with the TEXES high spectral resolution mid-infrared spectrograph at the NASA Infrared Telescope Facility in November 2001, December 2002, and January 2004. These are the first ground-based infrared observations of Io’s sunlit atmosphere, and provide a new window on the atmosp...
The objective o f this study was to investigate techniques suitable for viewing the microstructure of ice cream in the frozen and full y hydrated state using lowtemperature scanning electron microscopy (L T-SEM), and to examine the microstructure of the frozen product. lee cream bad four distinct structural phases: ice crystals, air bubbles, fa t globules and serum. Air bubbles, 10 to 60 ~-tm i...
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