Results 21 to 30 of about 10,528,536 (309)

Reliability evaluation of MMC system considering working conditions

open access: yesThe Journal of Engineering, 2018
The reliability is a key issue of the high-voltage high-power modular multilevel converter (MMC) system due to the usage of fragile insulated gate bipolar transistor (IGBT) modules. In this study, it is proposed that the reliability of the MMC system can
Tao Zheng   +3 more
doaj   +1 more source

Research on the Temperature Characteristics of the Photoacoustic Sensor of Glucose Solution

open access: yesSensors, 2018
In order to weaken the influence of temperature on photoacoustic (PA) measurements and compensate PA signals with a proposed theoretical model, the relationship of PA signal amplitude with temperature, under the condition of different glucose ...
Wei Tao   +5 more
doaj   +1 more source

Fabrication and Characterization of a Ruthenium Nitride Membrane for Electrochemical pH Sensors

open access: yesSensors, 2009
ThepH sensing and nonideal characteristics of a ruthenium nitride (RuN) sensing membrane pH sensor were investigated. RuN thin films were deposited from a 99.9% ruthenium target on p-type silicon substrates using radio frequency (r.f.) sputtering with N2
Yi-Hung Liao, Jung-Chuan Chou
doaj   +1 more source

Microstructural Evolution and High-Performance Giant Dielectric Properties of Lu3+/Nb5+ Co-Doped TiO2 Ceramics

open access: yesMolecules, 2021
Giant dielectric (GD) oxides exhibiting extremely large dielectric permittivities (ε’ > 104) have been extensively studied because of their potential for use in passive electronic devices.
Noppakorn Thanamoon   +4 more
doaj   +1 more source

The Dependence of Ultrasonic Velocity in Ultra-Low Expansion Glass on Temperature

open access: yesApplied Sciences, 2022
The coefficient of thermal expansion (CTE) is an important property of ultra-low expansion (ULE) glass, and the ultrasonic velocity method has shown excellent performance for the nondestructive measurement of CTE in large ULE glass.
Wenqing Wei   +5 more
doaj   +1 more source

A 167.18 ppm/°C temperature coefficient, area efficient voltage reference using only MOS transistors [PDF]

open access: yesSerbian Journal of Electrical Engineering, 2020
In this paper, design of a voltage reference circuit using only MOS transistors and without employing an operational amplifier is presented. A proportional to absolute temperature [PTAT] voltage and a PTAT current are designed then difference of
Prasad Guru, Shama Kumara
doaj   +1 more source

Consideration of the temperature factor of atmospheric air when determining standard consumption of fuel and energy resources for train traction

open access: yesВестник Научно-исследовательского института железнодорожного транспорта, 2018
. Influence of air temperature on the consumption of fuel and energy resources (FER) on train traction is due to a number of physical laws. The extent of this effect is specified in the Rules for Traction Settlement (RTS).
K. M. Popov
doaj   +1 more source

Energy performance of commercial c-Si PV modules in accordance with IEC 61853-1, -2 and impact on the annual specific yield

open access: yesEPJ Photovoltaics, 2023
As energy yields of photovoltaic modules are highly related to local climate and ambient conditions, it is necessary to assess the energy-yield performance of PV modules under various operating conditions.
Monokroussos Christos   +6 more
doaj   +1 more source

The Temperature Coefficient of Gravity [PDF]

open access: yesNature, 1917
THE general view held by philosophers seems to be that when temperature rises the gravitative attraction changes (if at all) by a function of temperature only. This leads to the results stated in the beginning of their letter by Dr. Lindemann and Mr. Burton.
F. A. LINDEMANN, C. V. BURTON
openaire   +3 more sources

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