نتایج جستجو برای: sem techniques

تعداد نتایج: 688367  

Journal: :Wireless Sensor Network 2010
Ehsan Ahvar Mahmood Fathy

Energy aware routing protocols can be classified into energy saver and energy manager. Energy saver protocols decrease energy consumption totally. Most of them try to find the shortest path between source and destination to reduce energy consumption. But energy manager protocols balance energy consumption in network to avoid network partitioning. Finding best route only based on energy balancin...

2000
LOWELL GALLAWAY RICHARD VEDDER

The details of the future will remain forever veiled to us. But give a gypsy seer a Ph.D. in economics and arm her with statistics and mathematical models, and people suddenly start taking her seriously. She will be invited to testify before Congress and held up by State TV as an expert in business forecasting. But from an analytical point of view, what she does is no different from what she di...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیخ بهایی - دانشکده زبانهای خارجی 1392

critical thinking ability has an important role in education. accordingly, scholars around the world are searching for new ways for teaching and improving students critical thinking ability. in line with the studies in efl contexts supporting the positive relationship between critical thinking and writing performances, this study investigated the differential effects of halverson’s critical thi...

Journal: :journal of sciences, islamic republic of iran 2015
m.j. taghizadeh a. javidan o. hosseinchi

a new magnetic nanocatalyst has been prepared using immobilization of vanadate onto aminopropyl functionalized sio2/fe3o4(vo3-/nh3+-sio2/fe3o4). the obtained magnetic catalyst was characterized by ft-ir, xrd, vsm and sem techniques and used for sulfoxidation of sulfide compounds to the correspondingsulfoxides in presence of h2o2 as oxidant at room temperature. the optimum of reaction conditions...

Single phase Eu doped GdMnO3 ceramics were prepared using solid state reaction route. Several different characterization techniques were used to investigate the structural and magnetic properties of the samples, including X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDX) and Vibrating Sample Magnetometer (VSM). All samples indicated single p...

Journal: :The British journal of nutrition 2007
Nuray Z Unlu Torsten Bohn David M Francis Haikady N Nagaraja Steven K Clinton Steven J Schwartz

Lycopene is present mainly as cis-isomers in human serum and tissues whereas all-trans-lycopene predominates in tomato products, suggesting that all-trans-lycopene is isomerised in the body or is less bioavailable. The objectives of the present study were to develop processing conditions for tomatoes to obtain products with different cis-trans-lycopene isomer distribution and to assess their bi...

Journal: :MOARA – Revista Eletrônica do Programa de Pós-Graduação em Letras ISSN: 0104-0944 2018

Journal: :Microscopy and Microanalysis 2019

Journal: :JASIST 2016
Mike Thelwall Paul Wilson

Statistics are essential to many areas of research and individual statistical techniques may change the ways in which problems are addressed as well as the types of problems that can be tackled. Hence, specific techniques may tend to generate high impact findings within science. This article estimates the citation advantage of a technique by calculating the average citation rank of articles usi...

Journal: :journal of sciences, islamic republic of iran 2012
f. f. farzaneh

v2o5/sio2 nanoparticles was prepared via an one-pot sol gel method from vanadyl- acetylacetonate and tetraethylorthosilicate in refluxing meoh, followed by calcination at 700 °c for 2 hours. the resultant nanoparticles was characterized by means of scanning electron microscopy (sem), transmission electron microscopy (tem), x-ray diffraction (xrd), tga and ftir techniques. rapid and efficient ar...

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