نتایج جستجو برای: inorganic scale

تعداد نتایج: 648965  

Journal: :Journal of Chemical Education 1977

2017
Brian Langelier Xiaoyue Wang Kathryn Grandfield

Human bone is a complex hierarchical material. Understanding bone structure and its corresponding composition at the nanometer scale is critical for elucidating mechanisms of biomineralization under healthy and pathological states. However, the three-dimensional structure and chemical nature of bone remains largely unexplored at the nanometer scale due to the challenges associated with characte...

Journal: :دانش آب و خاک 0
فهیمه محمدقاسمی کارشناس ارشد مرتع داری، دانشکده منابع طبیعی دانشگاه صنعتی اصفهان، ایران سید حمید متین خواه استادیار گروه مرتع و آبخیزداری، دانشکده منابع طبیعی دانشگاه صنعتی اصفهان، ایران عاطفه شهبازی دانشجوی دکتری علوم مرتع، دانشکده منابع طبیعی دانشگاه صنعتی اصفهان، ایران

plants have noticeable effects on soil resources distribution and its biochemical processes, and organic materials are naturally much more in the understory soil as compared to open areas. vegetation as one of the soil formation factors is not always an independent variable, so that the soil and vegetation can have interaction. the present study was conducted to investigate the effects of hedys...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت دبیر شهید رجایی - دانشکده علوم انسانی 1392

abstract due to the growing importance and influence of the self of the teacher in the field of educational and cognitive psychology, the current study intended to investigate the relationship between three teacher qualities and characteristics, i.e. teacher self efficacy, self regulation, and success as perceived by their learners. the study aimed at finding whether teacher self efficacy an...

Photocatalytic degradation of toxic organic compound in water, soil and air by semiconductor catalysts such as TiO2 and ZnO have received much attention over the last two decades. However, the low quantum yield, easy agglomeration and difficult post-separation of these inorganic catalysts limit their application for large-scale applications. Metal-organic frameworks (MOFs) are the latest class ...

Photocatalytic degradation of toxic organic compound in water, soil and air by semiconductor catalysts such as TiO2 and ZnO have received much attention over the last two decades. However, the low quantum yield, easy agglomeration and difficult post-separation of these inorganic catalysts limit their application for large-scale applications. Metal-organic frameworks (MOFs) are the latest class ...

2017
Neha Arora M. Ibrahim Dar Alexander Hinderhofer Norman Pellet Frank Schreiber Shaik Mohammed Zakeeruddin Michael Grätzel

Perovskite solar cells (PSC) with efficiencies > 20% have only been realized with highly expensive archetype organic hole transporting materials that can impede the large-scale deployment of PSC. Here we demonstrate PSCs achieving stabilized efficiencies of 20.3% with CuSCN as hole electron extraction layer. We developed a new method for the solution deposition of compact and highly conformal C...

Journal: :journal of membrane science and research 0
c. feng chemical engineering and applied chemistry department, university of toronto, on., m5s 3e5, canada k.c. khulbe industrial membrane research laboratory, department of chemical and biological engineering, university of ottawa, on. k1n 6n5, canada t. matsuura industrial membrane research laboratory, department of chemical and biological engineering, university of ottawa, on. k1n 6n5, canada r. farnood chemical engineering and applied chemistry department, university of toronto, on., m5s 3e5, canada a.f. ismail advanced membrane technology center (amtec), universiti teknologi malaysia, 81310 skudai, johor bahru, malaysia

this is a comprehensive review of the recent progresses made in the field of zeolite membranes. it describes zeolitic materials and methods of membrane fabrication, followed by a summary of applications for gas separation, pervaporation and separation of liquid mixtures. special attention is called to polymer mixed matrix membranes (mmms) and membranes based on metal organic frame works (mofs)....

Journal: :The Journal of biological chemistry 1972
A M Weiner T Platt K Weber

A simple, rapid, manual technique is described for determining the amino-terminal amino acid sequence of proteins on a nanomole scale. In this modification of the 5-dimethylaminonaphthalene-1-sulfonyl-Edman degradation, inorganic carriers permit convenient manipulation of small amounts of protein, and use of the detergent sodium dodecyl sulfate throughout the procedure maintains protein solubil...

2003
A. Gibaud A. Baptiste D. A. Doshi C. J. Brinker L. Yang B. Ocko

– X-ray reflectometry and GISAXS (grazing angle small angle scattering) are combined to investigate the morphology and structural parameters of a surfactant templated 2D hexagonal thin-film silica mesophase. It is shown that X-ray reflectivity measurements contain invaluable information about the radius of the cylindrical rods and the distance between their cores. The reflectivity data are anal...

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