Zobrazeno 1 - 10
of 1 497
pro vyhledávání: '"oscillation frequency"'
Publikováno v:
Известия высших учебных заведений: Проблемы энергетики, Vol 26, Iss 4, Pp 29-40 (2024)
The relevance of the work lies in the study of the effect of calcium deposits of various thicknesses on the inner walls of the pipeline on the parameters of its own vibrations.OBJECTIVE: To construct a mathematical model of a steel pipeline without d
Externí odkaz:
https://doaj.org/article/9aca5fa6c8bd4425b42de5fb7f4f56ea
Autor:
M. A. Afanasev, I. S. Tyuremnov
Publikováno v:
Вестник СибАДИ, Vol 21, Iss 4, Pp 488-501 (2024)
Introduction. Forward plate compactors are surface soil compaction machines with a flat operating device, which are usually equipped with a single-shaft vibration exciter. Forward plate compactors may be driven by gasoline, diesel or electric engines
Externí odkaz:
https://doaj.org/article/9d266432083849f1acf978e5b5c4fb1c
Publikováno v:
Вестник Дагестанского государственного технического университета: Технические науки, Vol 51, Iss 1, Pp 180-186 (2024)
Objective. Investigation of the influence of the design scheme on the dynamic characteristics of the frame of a building of complex shape in plan.Method. Four variants of structural solutions for the frame of a complex-shaped building have been devel
Externí odkaz:
https://doaj.org/article/ad1b13994c5042e58abab54e8961689c
Autor:
Chenmeng Zhang, Shijun Xie, Qiang Chen, Zhou Mu, Yalong Xia, Lieguo Zhou, Yong Ouyang, Jianjun Zhang
Publikováno v:
International Journal of Electrical Power & Energy Systems, Vol 158, Iss , Pp 109824- (2024)
The electromagnetic transient overvoltage in the substation is an important factor that affects the life of insulation equipment. For evaluate the economy and reliability of the insulation design of substation equipment, it is necessary to study and
Externí odkaz:
https://doaj.org/article/2169495ef98a4f198433ede2bab52134
Publikováno v:
Case Studies in Thermal Engineering, Vol 59, Iss , Pp 104477- (2024)
This work experimentally investigated the buoyancy induced flame instability of laminar diffuison flames under different sub-atmospheric pressures (20kPa–100 kPa) in a reduced pressure chamber. Circular nozzle with inner diameter of 8mm was used to
Externí odkaz:
https://doaj.org/article/5f7f5ca8264c45e6b2a9cd6531caddb8
Publikováno v:
Energies, Vol 17, Iss 22, p 5588 (2024)
PHPs (pulsating heat pipes) are widely used as an efficient heat transfer element in equipment thermal management and waste heat recovery due to their flexibility. The purpose of this study was to design a heat transfer device that utilizes an asymme
Externí odkaz:
https://doaj.org/article/3fab593d9456496c9cb7dc88e10f4080
Autor:
Zhanpeng Yan, Hongxia Liu, Menghao Huang, Shulong Wang, Shupeng Chen, Xilong Zhou, Junjie Huang, Chang Liu
Publikováno v:
Micromachines, Vol 15, Iss 11, p 1292 (2024)
In this paper, the degradation mechanism of the RF performance of 22 nm fully depleted (FD) silicon-on-insulator nMOSFETs at different total ionizing dose levels has been investigated. The RF figures of merit (the cut-off frequency fT, maximum oscill
Externí odkaz:
https://doaj.org/article/c0026e4eff74419abca7210802db66ec
Autor:
Ghader Darbandy, Elahe Rastegar Pashaki, Christian Roemer, Amric Bonil, Juan Wang, Benjamin Iniguez, Hans Kleemann, Alexander Kloes
Publikováno v:
Advanced Electronic Materials, Vol 10, Iss 5, Pp n/a-n/a (2024)
Abstract In state‐of‐the‐art organic transistors, the transit frequency fT is reported to be fT = 40 MHz for vertical organic transistors, where a voltage‐normalized fT corresponds to 0.36 MHz V−2. The reported highest fT for conventional o
Externí odkaz:
https://doaj.org/article/54523743cb2c49058cd59d3382e4f246
Publikováno v:
Energies, Vol 17, Iss 15, p 3725 (2024)
Pulsating heat pipes (PHPs) are widely used in the heat dissipation of electronic components, waste heat recovery, solar energy utilization, etc., relying on the pulsating flow of the work material in the pipe and the heat transfer by phase change, a
Externí odkaz:
https://doaj.org/article/c93a3f3b6d88455295af238f6ea0e03e
Autor:
Arsen AHMED, Hüseyin DEMİREL
Publikováno v:
Gazi Üniversitesi Fen Bilimleri Dergisi, Vol 11, Iss 3, Pp 735-743 (2023)
This paper provides a 3rd order oscillator circuit utilizing CDCTA (Current Differencing Cascaded Trans conductance Amplifiers) to address issues with high power consumption and low oscillation frequency in oscillators. The suggested arrangement prov
Externí odkaz:
https://doaj.org/article/50ffa3ec9a554ba5a5997033949c244f