نتایج جستجو برای: micron
تعداد نتایج: 16124 فیلتر نتایج به سال:
We analyze a sample of 30,000 nearby obscured AGNs with optical spectra from the Sloan Digital Sky Survey and mid-IR photometry from the Wide-field Infrared Survey Explorer. Our aim is to investigate the host galaxy properties in AGNs where the nuclear activity level is indicated by the mid-IR luminosity, and to compare the results to previous studies, which have used the [OIII] emission line a...
We applied transmission electron microscopy and densitometric image analysis to measure the cell volume (V) and dry weight (DW) of single bacterial cells. The system was applied to measure the DW of Escherichia coli DSM 613 at different growth phases and of natural bacterial assemblages of two lakes, Piburger See and Gossenköllesee. We found a functional allometric relationship between DW (in f...
The endocytosis of tracer particles by sinusoidal endothelial cells was studied in the bone marrow and liver of the rabbit and in the bone marrow of the rat after intravenous injection. The tracer particles used included carbon particles and polystyrene particles of different sizes ranging from 0.11 to 5.7 micron in diameter. The sinusoidal endothelial cells of the rabbit liver and rat bone mar...
The number and volume of fibrillar centres, the structural components of interphase cell nucleoli on the surface of which rRNA is synthesized, have been studied in differentiating erythroblasts of mouse embryo liver. Complete series of ultrathin sections of erythroblast nuclei have been used at the main stages of differentiation: proerythroblast, basophilic erythroblast, polychromatophilic eryt...
Dark-field microscopy with a high-powered light source revealed that the outer doublet microtubules (DMTs) from sea urchin (Pseudocentrotus depressus and Hemicentrotus pulcherrimus) sperm flagella assume helically coiled configurations (Miki-Noumura, T., and R. Kamiya. 1976. Exp. Cell Res. 97: 451.). We report here that the DMTs change shape when the pH or Ca-ion concentration is changed. The D...
Understanding how various redox activities evolve and distribute in disordered rocksalt oxides (DRX) can advance insights into manipulating materials properties for achieving stable, high-energy batteries. Herein, the authors present reaction kinetics spatial distribution of are governed by particle size DRX materials. The size-dependent electrochemical performance is attributed to distinct cat...
Micron-sized CoCrNi medium-entropy alloy (MEA) wires are successfully fabricated by Taylor-Ulitovsky method for the first time. The of two different sizes, with diameters 40 and 100 microns, exhibit an excellent combination tensile strength ductility. In-depth microstructure characterization indicates superior mechanical properties stem from synergy Lomer-Cottrell locks, nano-twinning HCP stack...
in this work, we had examined 7 different types of neutron sources -an isotropic point source, sending 14.1(mev) monoenergetic neutrons ,an spherical source with 30 micron radius sending 14.1 (mev) monoenergetic neutrons, and a 30 micron radius spherical source having gaussian fusion energy spectrum from a d-t fusion, with different bandwidths -1,10,50,100 and 1000 kev and investigated 5 differ...
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