نتایج جستجو برای: electron microscopy

تعداد نتایج: 400040  

Journal: :iranian chemical communication 0
shahryar pashaei payame noor university

polyvinyl ester green composites were synthesized with walnut shell powder (wsp) by in-situ polymerization technique. the green composites have been evaluated for mechanical properties such as tensile strength, tensile modulus and hardness. sliding wear loss, specific wear rate and coefficient of friction were investigated by using computerized pin-on–disc machine at normal applied loads of 20,...

Journal: :journal of lasers in medical sciences 0
reza amid 1deptartment of periodontics, school of dentistry, shahid beheshti university of medical sciences, tehran, iran 2dental research center, research institute of dental sciences, school of dentistry, shahid beheshti university of medical sciences, tehran, iran gholamali gholami deptartment of periodontics, school of dentistry, shahid beheshti university of medical sciences, tehran, iran masoud mojahedi deptartmen of laser, school of dentistry, shahid beheshti university of medical sciences, tehran, iran maryam aghalou deptartment of periodontics, school of dentistry, shahid beheshti university of medical sciences, tehran, iran mohsen gholami private practice, tehran, iran mahdieh mirakhori dental research center, research institute of dental sciences, school of dentistry, shahid beheshti university of medical sciences, tehran, iran

introduction: the efficacy of erbium-doped yttrium aluminum garnet (er:yag) laser for root debridement in comparison with curettes has been the subject of many recent investigations. considering the possibility of chemical and ultra-structural changes in root surfaces following laser irradiation, this study sought to assess the effects of scaling and root planing (srp) with curettes and er:yag ...

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...

Journal: :international journal of nano dimension 0
n. molahasani department of chemistry, tehran shargh branch, islamic azad university, tehran, iran. m. s. sadjadi department of chemistry, science and research branch, islamic azad university, tehran, iran. k. zare department of chemistry, science and research branch, islamic azad university, tehran, iran.

nanocrystalline zinc oxide (zno) powders with different morphology have been successfully synthesized by using different surfactants such as cetyl trimethyl ammonium bromide (ctab), sodium dodecyl sulphate (sds), and tri ethanol amine (tea) via hydrothermal method. the products were characterized by means of powder x-ray diffraction (xrd), scanning electron microscopy (sem), transmission electr...

Journal: :Reviews in Mineralogy and Geochemistry 2014

Journal: :Journal of Cell Biology 2001

Journal: :journal of nanostructures 2012
f. piri n. shakour m. zandi r. karimian

the preparation of nanostructure type manganese oxide and cobalt oxide materials with the smallest particle size is reported here. the nanorod manganese oxide and cobalt oxide nanotube were prepared via a sol-gel reaction in reverse micelles from kmno4 and cocl2 with respectively source at room-temperature. the structure and surface morphology of the obtained manganese oxide were studied by mea...

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