Results 71 to 80 of about 1,511,904 (357)

Angular dependence in ultraviolet imaging of HVDC partial discharges: Mechanism investigation and correction approach [PDF]

open access: yesAIP Advances
To address the observation angle effects on the diagnosis accuracy of ultraviolet (UV) imaging for partial discharge (PD) monitoring in high-voltage direct current (HVDC) equipment, this study investigates the underlying mechanism and develops a ...
Jinwei Lv   +6 more
doaj   +1 more source

Comparative analyses of space-to-space central power stations [PDF]

open access: yes
The technological and economical impact of a large central power station in Earth orbit on the performance and cost of future spacecraft and their orbital transfer systems are examined.
Garrett, L. B., Holloway, P. F.
core   +1 more source

Complementary Logic Driven by Dielectrophoretic Assembly of 2D Semiconductors

open access: yesAdvanced Functional Materials, EarlyView.
Scalable, parallel fabrication of complementary logic gates is demonstrated using electric‐field‐driven deterministic assembly of electrochemically exfoliated 2D n‐type MoS2 and p‐type WSe2 nanosheets. This strategy yields MoS2 and WSe2 transistors featuring average mobilities of 4.3 and 3.0 cm2 V−1 s−1, respectively, and on/off ratios of > 104 ...
Dongjoon Rhee   +10 more
wiley   +1 more source

Dynamic Stall of a Vertical-Axis Wind Turbine and Its Control Using Plasma Actuation

open access: yesEnergies, 2019
In this paper, a dynamic stall control scheme for vertical-axis wind turbine (VAWT) based on pulsed dielectric-barrier-discharge (DBD) plasma actuation is proposed using computational fluid dynamics (CFD).
Lu Ma   +3 more
doaj   +1 more source

Space station power semiconductor package [PDF]

open access: yes
A package of high-power switching semiconductors for the space station have been designed and fabricated. The package includes a high-voltage (600 volts) high current (50 amps) NPN Fast Switching Power Transistor and a high-voltage (1200 volts), high ...
Balodis, Vilnis   +4 more
core   +1 more source

Comparative energy storage assessment item [PDF]

open access: yes, 1984
This analysis, a Space Station application study, rediscovered Integrated Power and Attitude Control (IPAC) and found the approach to have lower initial and resupply weight and lower initial and resupply cost than either battery/CMG or regenerative fuel ...
Giudici, B.
core   +1 more source

Deciphering the Interplay Between Wetting and Chemo‐Mechanical Fracture in Lithium‐Ion Battery Cathode Materials

open access: yesAdvanced Functional Materials, EarlyView.
The fundamental intricate couplings between electrolyte wetting and fracture evolution are investigated in large single‐crystal V2O5 samples using both experimental techniques and simulations. Both approaches reveal consistent fracture patterns and lithium distribution concentration maps influenced by the wetting mechanism.
Wan‐Xin Chen   +6 more
wiley   +1 more source

On a Question of a Historiography of Electrification of the USSR 1920-1930 Years

open access: yesУправленческое консультирование, 2018
This article deals with an analysis of research literature focused on the electrification of the country in the 1920s - early 1930s and the main directions in the development of foreign and domestic historiography on the given subject.
Alexander Ivanovich Lushin   +1 more
doaj  

Local Thermal Conductivity Patterning in Rotating Lattice Crystals of Anisotropic Sb2S3

open access: yesAdvanced Functional Materials, EarlyView.
Microscale control of thermal conductivity in Sb2S3 is demonstrated via laser‐induced rotating lattice crystals. Thermal conductivity imaging reveals marked thermal transport anisotropy, with the c axis featuring amorphous‐like transport, whereas in‐plane directions (a, b) exhibit 3.5x and 1.7x larger thermal conductivity.
Eleonora Isotta   +13 more
wiley   +1 more source

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