نتایج جستجو برای: scanning electron micrograph sem
تعداد نتایج: 455920 فیلتر نتایج به سال:
The FIB/SEM system was satisfactorily used for scanning ion (SIM) and scanning electron microscopy (SEM) of gland epithelial cells of a terrestrial isopod Porcellio scaber (Isopoda, Crustacea). The interior of cells was exposed by site-specific in situ focused ion beam (FIB) milling. Scanning ion (SI) imaging was an adequate substitution for scanning electron (SE) imaging when charging rendered...
introduction: this study aimed to assess the scanning electron microscope (sem) analysis of tooth surface irradiated by erbium:yttrium–aluminum–garnet (er:yag) laser with various parameters. methods: number of 25 extracted human third molars free of caries were used in this study. the teeth were put into 5 groups for laser irradiation as follows: group 1 (power: 0.5 w, energy: 50 mj); group 2 (...
the normal and lateral line cycloid scales of the native species garra rossica (nikol’skii, 1900), one of the most common and poorly known cyprinid fish in south-eastern iran have been subjected to the scanning electron microscopy technique in order to study their detailed structure. normal scale below the dorsal fin showed a clearcut demonstration between the anterior and posterior region with...
Background: Surface properties of a biomaterial could be critical in determining biomaterial’s biocompatibility due to the fact that the first interactions between the biological environment and artificial materials are most likely occurred at material’s surface. In this study, the surface properties of a new nanocomposite (NC) polymeric material were modified by combining plasma treatment and...
Cadmium chalcogenides with appropriate band gap energy have been attracting a great deal of attention because of their potential applications in optoelectronic devices. In this work CdS thin films were deposited on p – type silicon substrates by sol – gel spin coating method at different substrate temperatures. The CdS deposited wafers were characterized by X‐ray diffracti...
A dual stage process of depositing bamboo-like carbon nanotubes (BCNTs) by hot filament chemical vapor deposition (HFCVD) and coating Si using Radio frequency sputtering (RFS) technique. The films were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and electron field emission studies (EFE)....
Electron microscopy of materials in a gaseous environment has its origins as far back as about the 1950s for the transmission electron microscope (TEM), later followed by developments for the scanning electron microscope (SEM). Focusing on the latter, this review outlines the history and commercial development of the technology, culminating in the environmental SEM (ESEM), and the techniques fo...
introduction: the aim of this study was to evaluate and compare the scanning electron microscope (sem) of indirect composite conditioned by erbium-doped yttrium aluminum garnet (er:yag) laser, neodymium-doped yttrium aluminium garnet (nd:yag) laserand carbon dioxide (co2) laser. methods: 18 indirect composite blocks (gc gradia da2, japan) with 15 × 10 × 10 mm dimensions were made. the bonding s...
The low microbial flocculant yields and efficiencies limit their industrial applications. There is a need to identify bacteria with high bioflocculant production. aim of this study was isolate bioflocculant-producing bacterium from activated sludge wastewater characterise its activity. identification the isolated performed by 16S rRNA gene sequencing analysis. optimal medium composition (carbon...
Abstract The process of seed germination is described as the culmination a series events that start with wetting and end emergence embryo (typically radicle) from coat. This method has an impact on crop output quality. characteristics surface surroundings have kinetics volume water absorption by seeds. As result, modifying seed's useful tactic for influencing germination. Low-temperature plasma...
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