نتایج جستجو برای: temperature suppression
تعداد نتایج: 555963 فیلتر نتایج به سال:
the main purpose of this research was to:1.develop a coking model for thermal cracking of naphtha.2.study coke inhibition methods using different coke inhibitors.developing a coking model in naphtha cracking reactors requires a suitable model of the thermal cracking reactor based on a reliable kinetic model.to obtain reliable results all these models shall be solved simultaneously.for this pu...
Introduction Ventricular tachycardia and atrial fibrillation can be treated in a minimally invasive fashion with localized catheter radio-frequency ablation of the myocardium [1]. For cardiac ablation, PRFS-based MR thermometry [2] may provide intra-procedural feedback, helping with the determination of the therapy endpoint and to avoid damage to adjacent vital structures such as the esophagus....
Abstract In this study, we realize the high-power output of a single-mode 894 nm vertical-cavity surface-emitting laser (VCSEL) at high temperature. The effects dimensional parameters oxide aperture and surface relief on transverse mode threshold gain VCSEL were analyzed. Through collaborative optimization relief, with 8 µm diameter 5 inner can operate temperature 365 K power 2.02 mW side-mode ...
We demonstrate thermometry with a resolution of 80 nK/Hz using an isotropic crystalline whispering-gallery mode resonator based on a dichroic dual-mode technique. We simultaneously excite two modes that have a mode frequency ratio that is very close to two (±0.3 ppm). The wavelength and temperature dependence of the refractive index means that the frequency difference between these modes is a...
Intercellular adhesion molecule-1 (ICAM-1) in cerebral vascular endothelium induced by ischemic insult triggers leukocyte infiltration and inflammatory reaction. We investigated the mechanism of hypothermic suppression of ICAM-1 in a model of focal cerebral ischemia. Rats underwent 2 hours of middle cerebral artery occlusion and were kept at 37°C or 33°C during occlusion and rewarmed to normal ...
OBJECTIVE To identify reliable predictors of outcome in comatose patients after cardiac arrest using a single routine EEG and standardized interpretation according to the terminology proposed by the American Clinical Neurophysiology Society. METHODS In this cohort study, 4 EEG specialists, blinded to outcome, evaluated prospectively recorded EEGs in the Target Temperature Management trial (TT...
Era, a Ras-like GTP-binding protein in Escherichia coli, has been shown to be essential for growth. However, its cellular functions still remain elusive. In this study, a genetic screening of an E. coli genomic library was performed to identify those genes which can restore the growth ability of a cold-sensitive mutant, Era(Cs) (E200K), at a restrictive temperature when expressed in a multicopy...
We investigate the injection of degenerate Fermi-Dirac electrons into a multimode ballistic conductor under the space-charge-limited regime. The nonequilibrium current fluctuations were found to be suppressed by both Coulomb and Fermi correlations. We show that the Fermi shot-noise-suppression factor is limited below by the value 2kBT/«F , where T is the temperature and «F the Fermi energy of t...
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