نتایج جستجو برای: defect spectrum
تعداد نتایج: 316759 فیلتر نتایج به سال:
background: there is some evidence indicating improvement in myocardial performance after atrial septal defect closure, either device closure or surgical, but ventricular dyssynchrony has not been evaluated before and after surgical closure. the aim of this study was to evaluate ventricular mechanical dyssynchrony in patients with atrial septal defect before and after surgical closure. methods:...
Rare-earth (RE) doped GaN is of interest for optoelectronics and spintronics potentially quantum applications. A fundamental understanding the interaction between RE dopants semiconductor host key to realizing material's full potential. This work reports an investigation lanthanide ($Ln$) defects in using hybrid density-functional defect calculations. We find that all $Ln$ incorporated at Ga la...
Because roller element bearings (REBs) failures cause unexpected machinery breakdowns, their fault diagnosis has attracted considerable research attention. Established fault feature extraction methods focus on statistical characteristics of the vibration signal, which is an approach that loses sight of the continuous waveform features. Considering this weakness, this article proposes a novel fe...
In order to perform automated calculations of defect and dopant properties in semiconductors insulators, we developed a software package, Defect Dopant ab-initio Simulation Package (DASP), which is composed four modules for calculating: (i) elemental chemical potentials, (ii) (dopant) formation energies transition energy levels, (iii) carrier densities (iv) dynamics high-density defects. DASP u...
Abstract We discuss when an operator T, subject to a rather general inequality in hereditary form, admits unitarily equivalent functional model of Agler type the reproducing kernel Hilbert space associated inequality. The need not be Nevanlinna-Pick type. define defect D our context and structure spectrum T is finite rank. As second application, some consequences concerning ergodic behavior are...
a one-month-old male terrier dog was referred in shock status with a history of anorexia, tachypnea, abdominal distention and progressive weight loss. auscultation of right side of the lungs found enhanced respiratory noises. the thorough auscultation of the opposite side of the chest revealed the presence of typical intestinal sounds. cardiac auscultation revealed muffled heart sounds and a di...
We show that the classic laws of the mean-velocity profiles (MVPs) of wall-bounded turbulent flows-the 'law of the wall,' the 'defect law' and the 'log law'-can be predicated on a sufficient condition with no manifest ties to the MVPs, namely that viscosity and finite turbulent domains have a depressive effect on the spectrum of turbulent energy. We also show that this sufficient condition is c...
In this paper we consider a common procedure [2] for generating analytic signals and show how it fails for specific discrete-time real signals. A new frequency domain technique is formulated that solves the defect. Both methods have the same redundancy. The new analytic signal preserves the original signal (real part) as also the zeros of its discrete spectrum in the negative frequencies. The s...
N-type macroporous silicon microcavity structures were prepared using electrochemical etching in an HF solution in the absence of light and oxidants. The CdSe/ZnS water-soluble quantum dot-labeled DNA target molecules were detected by monitoring the microcavity reflectance spectrum, which was characterized by the reflectance spectrum defect state position shift resulting from changes to the str...
A dramatic electric field dependence has been observed in the fluorescence yield spectrum of the doubly excited states in helium, where a rich phenomenology is encountered below the threshold. Fluorescence yields of certain states can be tuned to zero, while other dipole-forbidden states are significantly enhanced, for fields much weaker than 1 kV/cm. Using an R-matrix multichannel quantum defe...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید