نتایج جستجو برای: pa thin layer

تعداد نتایج: 419876  

2010
Nancy H. Lin Myung-man Kim Gregory T. Lewis Yoram Cohen

A new class of surface-structured RO membranes was developed with a hydrophilic brush layer of terminally anchored polymer chains resulting in fouling resistant membranes of low mineral scaling propensity and high permeability. The approach is based on free-radical graft polymerization of a suitable monomer, onto the active polyamide (PA) layer of a thin film composite (PA-TFC) membrane, post-s...

Journal: :journal of advanced materials and processing 0
mohamad javad eshraghi materials and energy research center nima naderi materials and energy research center

the effect of evaporation rate on structural, morphological and optical properties of electron beam evaporated cds thin films have been investigated. cds thin film deposited by electron beam evaporation method in 12nm/min and 60nm/min evaporation rates on glass substrates. x-ray diffraction, scanning electron microscopy, uv-vis-nir spectroscopy and atomic force microscopy were used to character...

Journal: :avicenna journal of medical biotechnology 0

mimosa pudica lin., known as chue mue, is a stout straggling prostrate shrubby plant, with spinous stipules and globose pinkish flower heads, and grows as weed in almost all parts of the country. it is traditionally used for its various properties and hence in the present study, chloroform extract of mimosa pudica leaves has been screened for its hypolipidemic activity. hypolipidemic activity i...

Journal: :avicenna journal of phytomedicine 0
amit sharma department of medicinal chemistry, institute of medical sciences, banaras hindu university, varanasi 21005, up india mayank gangwar department of pharmacology, institute of medical sciences, banaras hindu university, varanasi- 221005 up india dharmendra kumar department of microbiology, institute of medical sciences, banaras hindu university, varanasi- 221005 up india gopal nath department of microbiology, institute of medical sciences, banaras hindu university, varanasi- 221005 up india akhoury sudhir sinha department of chemical engg, indian institute of technology, banaras hindu university, vanarasi-221005. up india yamini tripathi department of medicinal chemistry, institute of medical sciences, banaras hindu university, varanasi 21005, up india

objective: this study aims to evaluate the antimicrobial activity, phytochemical studies and thin layer chromatography analysis of machine oil, hexane extract of seed oil and methanol extract of presscake& latex of jatropha curcas linn (family euphorbiaceae). materials and methods: j. curcas extracts were subjected to preliminary qualitative phytochemical screening to detect the major phytochem...

2011
Qiang Chen Xincun Li Wenwen Lei Lijun Sang Lizhen Yang Zhenduo Wang

As a media aluminum oxide (Al2O3) thin films deposited by radio frequency plasma-assisted atomic layer deposition (RF-PA-ALD) method were employed to explore the magnetic field effect. Different from normal plasma-assisted ALD (PA-ALD) technology a magnetic field was applied during the whole deposition process. With this novel ALD technology it obtains that the deposition rate in each cycle of ...

2016
Yuan Xu Xueli Gao Xiaojuan Wang Qun Wang Zhiyong Ji Xinyan Wang Tao Wu Congjie Gao

A hydrophilic, hydrostable porous metal organic framework (MOF) material-MIL-101 (Cr) was successfully doped into the dense selective polyamide (PA) layer on the polysulfone (PS) ultrafiltration (UF) support to prepare a new thin film nanocomposite (TFN) membrane for water desalination. The TFN-MIL-101 (Cr) membranes were characterized by SEM, AFM, XPS, wettability measurement and reverse osmos...

Journal: :journal of membrane science and research 0
mohammad khajouei department of chemical engineering, babol noshirvani university of technology, shariati ave.,babol, iran, post code 47148-71167 majid peyravi department of chemical engineering, babol noshirvani university of technology, shariati ave.,babol, iran, post code 47148-71167 mohsen jahanshahi department of chemical engineering, babol noshirvani university of technology, shariati ave.,babol, iran, post code 47148-71167

over the past decade, many applications were intended for filtration by membrane technology especially the thin film composite (tfc) membranes. in advanced developments of thin film membranes, an attempt was made to spread a new generation of membranes called thin film nano composite (tfn) membranes. however, in the last generation of tfns, an ultrathin selective film of nanoparticles is coated...

Journal: :Inorganic chemistry 2011
Inseok Seo Steve W Martin

In this study, lithium thio-germanate thin film electrolytes have been successfully prepared by radio frequency (RF) magnetron sputtering deposition in Ar gas atmospheres. The targets for RF sputtering were prepared by milling and pressing appropriate amounts of the melt-quenched starting materials in the nLi(2)S + GeS(2) (n = 1, 2, and 3) binary system. Approximately 1 μm thin films were grown...

Journal: :فیزیک زمین و فضا 0
محمد رداد دانشجوی دکتری ژئوفیزیک، گروه فیزیک زمین، مؤسسة ژئوفیزیک دانشگاه تهران، ایران عبدالرحیم جواهریان استاد بازنشسته، گروه فیزیک زمین، مؤسسه ژئوفیزیک، دانشگاه تهران و استاد دانشکده مهندسی نفت دانشگاه صنعتی امیرکبیر، تهران، ایران

most geologic changes have a seismic response but sometimes this is expressed only in certain spectral ranges hidden within the broadband data. spectral decomposition is one of the methods which can be utilized to help interpreting such cases. there are several time-frequency methods including: short-time fourier transform (stft), continuous wavelet transform (cwt), wigner-ville distribution (w...

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