نتایج جستجو برای: scanning electron micrograph sem

تعداد نتایج: 455920  

Journal: :Micron 2021

This paper investigated the improvement of mechanical properties for one most used biomaterials, titanium-based alloy. To improve its properties, molybdenum was chosen to be added Ti and Ti-Zr alloys through a blending process. After homogenization (12, 15) Mo Mo-6 Zr, compaction pressure sintering temperature were varied create pellets. Characterization has been done using scanning electron mi...

Journal: :mycologia iranica 0
kh. pirali-kheirabadi department of pathobiology, faculty of veterinary medicine, shahrekord university, shahrekord, iran m. razzaghi-abyaneh department of mycology, pasteur institute of iran, tehran, iran a. eslamifar department of pathology, pasteur institute of iran, tehran, iran a. halajian department of biodiversity (zoology), university of limpopo, sovenga, south africa s. nabian department of parasitology, faculty of veterinary medicine, university of tehran, tehran, iran

in the present study, pathogenicity of four native strains of entomopathogenic fungus; metarhizium anisopliae, was studied against adult stage of ixodes ricinus. for this purpose a total number of 180 adult ticks were examined in triplicate. thirty ticks for each strain and negative and positive controls were immersed in 2.4×107 fungal conidia/ml in vitro. samples were incubated in separate pet...

2014
Veronika Novotna Kamila Hrubanova Jana Nebesarova Vladislav Krzyzanek

The STEM (scanning transmission electron microscope) is useful device combining features of scanning and transmission electron microscopes. The sample in form of ultrathin section is scanned by the electron probe and the transmitted electrons are detected. Except the dedicated STEMs [1] this mode can exist as options in both TEM and SEM [2]. The STEM based on the SEM equipped by a transmission ...

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...

2007
Makoto Suzuki Quoc Ngo Hirohiko Kitsuki Kristofer Gleason Yusuke Ominami Cary Y. Yang Toshishige Yamada Alan M. Cassell Jun Li

The authors present scanning transmission electron microscopy STEM of carbon nanofibers CNFs on a bulk substrate using conventional scanning electron microscopy SEM without specimen thinning. By utilizing the electron beam tilted 85° from the substrate normal, bright-field STEM contrast is obtained for the CNFs on substrate with conventional SEM. Analysis of the observed contrast using Monte Ca...

Journal: :Applied sciences 2021

The preparation of copper manganite (hopcalite, Cu1.5Mn1.5O4), as a single phase, was achieved by using sustainable method green synthesis. This is based on the replacement conventional “brute force” ceramic recent “soft synthesis via egg white assisted one-step method. In other words, we present facile and rapid methodology to prepare nanocrystalline Cu1.5Mn1.5O4 spinel compared our previous w...

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