نتایج جستجو برای: corona
تعداد نتایج: 13738 فیلتر نتایج به سال:
This study investigates the possibility of corona discharge ionization technique for reduction of fog. For corona discharge ionization a high voltage power supply is designed and developed indigenously. The high output voltage is developed by using isolation transformer, autotransformer, and high voltage neon transformer and it is converted into DC voltage by using Wheatstone bridge circuit and...
Multi-atmospheric pressure, pulsed electric discharge excited lasers require pre-ionization to produce spatially uniform glows. Many such systems use corona bars to produce ultraviolet (UV) and vacuum ultraviolet (VUV) light as photo-ionization sources for this purpose. Corona bars are transient surface discharges, typically in a cylindrical geometry, that sustain high electron temperatures and...
A protein corona forms spontaneously around silica nanoparticles (SNPs) in serum-containing media. To test whether this protein corona can be utilized for the loading and release of anticancer drugs we incorporated the hydrophilic doxorubicin, the hydrophobic meloxicam as well as their combination in the corona around SNPs. The application of corona-covered SNPs to osteosarcoma cells revealed t...
We study an accretion disc with a hot continuous corona. We assume that the corona itself accretes and therefore it is powered directly by the release of the gravitational energy and cooled by radiative interaction with the disc. We consider the vertical structure of such a corona and show that the radial infall is accompanied by strong vertical outtow. Such a model has two important consequenc...
Quoted from Expanded Maxwellian Geometry of Space http://pages.globetrotter.net/srp/geomax2a.htm 4 edition, 2009, SRP Books Abstract: It can be shown that positron production and nucleosynthesis in the corona could be much more extensive than assumed from current theories. It can be shown also that there is a possibility that the extreme temperatures observed in the corona may be due to nucleon...
A deep Chandra observation of NGC 1265 (3C 83.1B), the prototype for the narrow-angled-tailed (NAT) radio galaxy, reveals a small cool X-ray thermal corona (∼ 0.6 keV) embedded in the hot ICM of the Perseus cluster (∼ 6.7 keV). The corona is asymmetric with a sharp edge (∼2.2, or 0.8 kpc from the nucleus) to the south and an extension to the north (at least ∼ 8 from the nucleus), which is inter...
BACKGROUND Before human MII oocytes are vitrified they are usually denuded from their cumulus cells. In this study we wanted to investigate the effects of an intact corona radiata on the vitrification and fertilization of human oocytes. METHODS The study comprised two different parts. In Part 1, 36 MII stage oocytes, from 6 patients, were randomly assigned into a control group, a group of vit...
Neuronal activity causes substantial Na+ transients in fine cellular processes such as dendrites and spines. The physiological consequences of such Na+ transients are still largely unknown. High-resolution Na+ imaging is pivotal to study these questions, and, up to now, two-photon imaging with the fluorescent Na+ indicator sodium-binding benzofuran isophthalate (SBFI) has been the primary metho...
Minimizing the voltage of corona discharges, especially when using nanomaterials, has been of great interest in the past decade or so. In this paper, we report a new corona discharge device by using ZnO nanowires operated in atmospheric air to realize continuous corona discharge excited by hundreds of volts. ZnO nanowires were synthesized on microelectrodes using electric-field-assisted wet che...
Most astrophysical sources powered by accretion onto a black hole, either of stellar mass or supermassive, when observed with hard X-rays show signs of a hot Comptonizing component in the flow, the so-called corona, with observed temperatures and optical depths lying in a narrow range (0.1τ1 and 1×109KT 3×109 K). Here we argue that these facts constitute strong supporting evidence for a magneti...
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