نتایج جستجو برای: layer

تعداد نتایج: 282852  

Journal: :iranian journal of public health 0
h.mohammadiha p. mostafavi

a thin-layer chromatography method has been developed and evaluated for the separation and determination of lysine and methonine in a mixture of amino acids obtained from acid or enzyme hydrolysis of protein. the solvent systems were (a) ethanol-ether, (b) phenol-water, (c) ethyl methyl ketone-pyridine-distilled water-glacial acetic acid. procedures in all the three stages were in the same dime...

Journal: :Materials Today 2006

Journal: :iranian endodontic journal 0
seddigheh khedmat department of endodontics, dental school, tehran university of medical sciences, tehran, iran. [email protected] mostafa rezaefar general practitioner, tehran, iran

introduction: recently, attention has been drawn to the influence of smear layer removal on apical seal, and the relation of root canal filling material with canal wall surface in the presence and absence of the smear layer. the purpose of this study was to evaluate the influence of the smear layer removal on the apical sealing ability of ah26 sealer. materials and methods: forty extracted huma...

2007
Yen-Hsi Lin Chaoyang Jiang Jun Xu Zhiqun Lin Vladimir V. Tsukruk

The precise assembly of nanostructured materials into two (2D) and three-dimensional (3D) periodic microscopic arrays is achieved by employing various assembling technologies such as microparticle self-organization, photolithography, holographic lithography, selective chemical etching, ink printing, laser-based polymerization, selective responsive grafting, and inversion of bilayers. Soft litho...

Journal: :CoRR 2017
Fredrik Dahlqvist Louis Parlant Alexandra Silva

We develop a method to incrementally construct programming languages. Our approach is categorical: each layer of the language is described as a monad. Our method either (i) concretely builds a distributive law between two monads, i.e. layers of the language, which then provides a monad structure to the composition of layers, or (ii) identifies precisely the algebraic obstacles to the existence ...

2015
Victor A. Ermakov Andrei V. Alaferdov Alfredo R. Vaz Eric Perim Pedro A. S. Autreto Ricardo Paupitz Douglas S. Galvao Stanislav A. Moshkalev

Graphene, in single layer or multi-layer forms, holds great promise for future electronics and high-temperature applications. Resistance to oxidation, an important property for high-temperature applications, has not yet been extensively investigated. Controlled thinning of multi-layer graphene (MLG), e.g., by plasma or laser processing is another challenge, since the existing methods produce no...

Journal: :iran agricultural research 2012
d. zare m. ranjbaran m. niakousari m. javidi

a fully instrumented air conditioning laboratory unit capable of controlling drying air temperature and humidity integrated with an instantaneous weighing thin layer drying system was used to investigate the thin layer drying behavior and desorption equilibrium moisture content of canola (brassica napus l.). to this aim, freshly harvested canola samples with moisture content of about 12±0.5% (d...

Journal: :mechanics of advanced composite structures‎ 2014
y. rostamiyan m. abbasi f. aghajani f. hedayati s.m. hamidi

in the age of technology, it is vital to cool down different parts of a device to use it more beneficially. using nanofluids is one of the most common methods which has shown very effective results. in this paper, we have rephrased a classic equation in fluid mechanics, i.e. the falkner-skan boundary layer equation, in order to be used for nanofluid. this nonlinear equation, which was presented...

Journal: :journal of lasers in medical sciences 0
shahriar shahriari department of endodontics, faculty of dentistry, hamadan university of medical sciences, hamadan, iran shahin kasraei department of restorative dentistry, dental school, shahid beheshti university of medical sciences, tehran, iran ghodratollah roshanaei department of biostatistics, school of public health, hamadan university of medical sciences hamadan, iran hamed karkeabadi department of endodontics, faculty of dentistry, hamadan university of medical sciences, hamadan, iran hossein davanloo department of endodontics, faculty of dentistry, hamadan university of medical sciences, hamadan, iran

introduction: the purpose of the present study was to evaluate the different concentrations of sodium hypochlorite activated with laser in removing of the smear layer in the apical, middle, and coronal segments of root canal walls by scanning electron microscopy analysis. methods: sixty single-rooted human mandibular teeth were decoronated to a standardized length. the samples were prepared by ...

Journal: :journal of membrane science and research 0
yaghoub mansourpanah membrane research laboratory, lorestan university, khorramabad, p.o. box 68137-17133, iran parivash m. rashnou membrane research laboratory, lorestan university, khorramabad, p.o. box 68137-17133, iran

in this work, the effect of presence of the sodium tripolyphosphate (stpp), as an inorganic salt, on improving the performance of polyamide (pa) thin layer membranes has been studied. characterization analyses confirmed the presence of the salt on the whole surface structure of the thin layer. different salt loadings resulted in different fluxes and cu (ii) rejections. the thin layer containing...

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