Results 31 to 40 of about 2,517,198 (384)

Analysis of the Factors Influencing the Trailing Infrared Characteristics of Underwater Vehicles under Surge Conditions Using the Orthogonal Method

open access: yesApplied Sciences, 2023
With its benefits of efficiency and speed, the orthogonal experimental design method is currently often employed in many domains for multi-factor experimental design.
Shuang Zheng   +6 more
doaj   +1 more source

Surge-Energy and Overvoltage Ruggedness of P-Gate GaN HEMTs

open access: yesIEEE transactions on power electronics, 2020
An essential ruggedness of power devices is the capability of safely withstanding the surge energy. The surge ruggedness of the GaN high-electron-mobility transistor (HEMT), a power transistor with no or minimal avalanche capability, has not been fully ...
Ruizhe Zhang   +4 more
semanticscholar   +1 more source

Investigation of Vaned-Recessed Casing Treatment in a Low-Speed Axial Flow Compressor, Part I: Time-Averaged Results

open access: yesAerospace, 2023
This paper investigates the effects of two modifications to a vaned recessed casing treatment. First, the shape of a circular curve was used in the top of the treated casing. Second, a fully curved guide vane was also applied.
Mohammad Akhlaghi, Yahya Azizi
doaj   +1 more source

Unstable Flow Structures Present at Different Rotational Velocities of the Centrifugal Compressor

open access: yesEnergies, 2020
Unstable flow structures cause inevitable energy losses in all power energy systems, including turbomachines. In this study, a set of analyses was conducted with the use of spectral maps on the pressure signals obtained from an industrial centrifugal ...
Grzegorz Liśkiewicz   +6 more
doaj   +1 more source

Surge

open access: yesEnglish Studies in Latin America: A Journal of Cultural and Literary Criticism, 2023
With my lids shut, lashes oiled with sleep and urges,My hands got caught in the spokes of unstoppable trains:Faltering, threatening sages.Yes, despite my whale blubbering,my visual lubrication,The screech and the grinding of literary gears.The metallic sparks,my fathomless visions….
openaire   +1 more source

METHODS OF THE FORECAST OF SAFE WORK OF A ROAD BED OF THE HIGHWAY

open access: yesВестник Дагестанского государственного технического университета: Технические науки, 2016
Methods of the forecast of the parameter of the safe work earth are brought In article onpallet, as which is accepted reliability of the work for period between heavy repairs at reasonable conditions of the usages. Reliability is Considered as estimation
M. O. Allaev
doaj   +1 more source

Obtaining Information about Operation of Centrifugal Compressor from Pressure by Combining EEMD and IMFE

open access: yesEntropy, 2020
Based on entropy characteristics, some complex nonlinear dynamics of the dynamic pressure at the outlet of a centrifugal compressor are analyzed, as the centrifugal compressor operates in a stable and unstable state.
Yan Liu, Kai Ma, Hao He, Kuan Gao
doaj   +1 more source

Decline in Stroke Presentations During COVID-19 Surge

open access: yesStroke, 2020
Supplemental Digital Content is available in the text. Background and Purpose: We aimed to investigate the acute stroke presentations during the coronavirus disease 2019 (COVID-19) pandemic.
K. Uchino
semanticscholar   +1 more source

Polio Surge Capacity Support Program Contributions to Building Country Capacities in Support of Polio Outbreak Preparedness and Response: Lessons Learned and Remaining Challenges

open access: yesPathogens
Despite coordinated efforts at global level, through the Global Polio Eradication Initiative (GPEI), poliomyelitis disease (Polio) is still a major public health issue.
Fikru Abebe   +6 more
doaj   +1 more source

The Effect of DC Voltage Pre-Stress on the Breakdown Voltage of Air under Composite DC and LI Voltage and Test Circuit: Design and Application

open access: yesEnergies, 2022
The use of HVDC systems is increasing in number due to technological innovations, increasing power capacity and increasing customer demand. The characteristics of insulation systems under composite DC and LI voltage must be examined and clarified.
Mehmet Murat Ispirli   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy