Results 51 to 60 of about 23,857,808 (329)

自能式SF6断路器灭弧过程的计算机辅助模拟

open access: yesGaoya dianqi, 1998
基于对电弧物理的现有理解,可用个人计算机对新一代自能式SF6断路器的灭弧过程进行数值模拟,并预测其开断能力。本文采用的电弧模型以电弧和气体的质量、动量及能量守恒方程以及相关的麦克斯威方程为基础,并考虑了辐射传热、灭弧室壁的烧蚀、湍流强化的动量、能量传输以及触头的运动。电弧模型申守恒方程的求解是由一通用的流体力学计算软件包PHOENICS来完成的。由于在灭弧室内不同时刻的温度、压强、速度和静电势场均可形象地由彩色等值图显示出来,从而可在大大减少短路试验次数的前提下,详细研究不同的设计参数对开断过程的影响 ...
闫究敦   +2 more
doaj  

A study on stabilization of operation time for hydraulic operating circuit breaker (Investigation of synchronous / sequential operation system of two high speed hydraulic operating devices)

open access: yesNihon Kikai Gakkai ronbunshu, 2016
Two driving systems in which a circuit breaker is driven synchronously and sequentially by two devices which are connected with relatively long hydraulic pipes were investigated.
Tohru YAMASHITA   +4 more
doaj   +1 more source

On Wishart distribution [PDF]

open access: yes, 2010
This paper proposes a unified approach that enables the Wishart distribution to be studied simultaneously in the real, complex, quaternion and octonion cases.
Diaz-Garcia, Jose A.   +1 more
core  

Angular distributions

open access: yesIl Nuovo Cimento, 1960
The theorem for distributions in the angles θ, ϕ is extended to the third Euler angle, ϕ, whereupon it becomes equivalent to the rotational invariance of the responsible interactions. An interpretation of half-angle terms in the general rate formula is given.
openaire   +2 more sources

Evaluating the Utility of Paired Tumor and Germline Targeted DNA Sequencing for Pediatric Oncology Patients: A Single Institution Report

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Objective To evaluate the diagnostic yield and utility of universal paired tumor–normal multigene panel sequencing in newly diagnosed pediatric solid and central nervous system (CNS) tumor patients and to compare the detection of germline pathogenic/likely pathogenic variants (PV/LPVs) against established clinical referral criteria for cancer ...
Natalie Waligorski   +9 more
wiley   +1 more source

Multi-Objective Planning of Distributed Photovoltaic Power Generation Based on Multi-Attribute Decision Making Theory

open access: yesIEEE Access, 2020
Photovoltaic (PV) power generation has been heavily connected into distribution network recently. However, the intermittent and uncertainty of PV generation system will significantly affect the security operation of distribution network.
Changchun Cai   +4 more
doaj   +1 more source

Methodology to Evaluate the Impact of Electric Vehicles on Electrical Networks Using Monte Carlo

open access: yesEnergies, 2021
In preparation for the electric mobility technological transition in Colombia, an impact assessment of the electric power system is required, considering the increasing loading that must be able to be managed in the future.
Daniel Betancur   +7 more
doaj   +1 more source

Equilibrium Relativistic Mass Distribution

open access: yes, 1993
The relativistic Maxwell-Boltzmann distribution for the system of $N$ events with motion in space-time parametrized by an invariant ``historical time'' $\tau $ is considered without the simplifying approximation $m^2\cong M^2$, where $M$ is a given ...
Abramowitz   +19 more
core   +1 more source

Distributed entanglement [PDF]

open access: yesPhysical Review A, 2000
13 pages LaTeX; references added, derivation of Eq.
Coffman, Valerie   +2 more
openaire   +2 more sources

Outcomes of Live Virus Vaccination in Patients With Vascular Anomalies Being Treated With Sirolimus

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Live vaccination in patients with vascular anomalies (VA) receiving sirolimus remains controversial due to immunosuppressive effects and theoretical risks. Procedure This single‐center retrospective study included patients with VA less than 4 years old at the start of sirolimus therapy who were incompletely vaccinated.
Svatava Merkle   +5 more
wiley   +1 more source

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