Results 11 to 20 of about 2,141 (217)

Review of the Liquid Hydrogen Storage Tank and Insulation System for the High-Power Locomotive

open access: yesEnergies, 2022
Hydrogen has been attracting attention as a fuel in the transportation sector to achieve carbon neutrality. Hydrogen storage in liquid form is preferred in locomotives, ships, drones, and aircraft, because these require high power but have limited space.
Daehoon Kang, Sungho Yun, Bo-kyong Kim
doaj   +1 more source

Characterization and Modeling of Quantum Dot Behavior in FDSOI Devices

open access: yesIEEE Journal of the Electron Devices Society, 2022
A compact analytical model is proposed along with a parameter extraction methodology to accurately capture the steady-state (DC) sequential tunneling current observed in the subthreshold region of the transfer $I_{DS}-V_{GS}$ characteristics of MOSFETs
S. Pati Tripathi   +11 more
doaj   +1 more source

Hydrodynamic and Thermodynamic Behavior of Liquid Methane in a Vertical Feed Pipe [PDF]

open access: yesJournal of Applied Fluid Mechanics
During the chill-down procedure for a space application system, a multiphase flow of extremely cold propellants will undoubtedly occur in the feed lines.
K. Raj, P. R. L. Raj
doaj   +1 more source

Instrumentation Applied to Cryogenics Plants

open access: yesMeasurement + Control, 1972
The term “Cryogenic plant” refers to any plant or process designed to operate at very low temperatures, around 150 K and below. This paper deals generally with industrial air separation plants in which the separation of the main components is effected at
H Townsley
doaj   +1 more source

Characterization and Modeling of Mismatch in Cryo-CMOS

open access: yesIEEE Journal of the Electron Devices Society, 2020
This paper presents a device matching study of a commercial 40-nm bulk CMOS technology operated at cryogenic temperatures. Transistor pairs and linear arrays, optimized for device matching, were characterized over the temperature range from 300 K down to
P. A. T Hart   +4 more
doaj   +1 more source

Karol Olszewski’s 100th anniversary of death and his contribution to cryogenics (in Polish) [PDF]

open access: yesPrace Komisji Historii Nauki PAU, 2015
The article briefly presents the scientific achievements of Karol Olszewski (1846–1915), who was born when Poland did not exist on the map of Europe and Polish science was developed mainly in Krakow, Lviv and at some European Universities. In 1883 Karol
Alicja RAFALSKA‑ŁASOCHA
doaj   +1 more source

Design of the Optical System for a Protomodel of Space Infrared Cryogenic System [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2005
Many technical challenges are being tried for a large space infrared telescope, which is one of the major objectives of the Strategic Technology Road Map (STRM) of KASI (Korea Astronomy and Space Science Institute).
Dae-Hee Lee   +12 more
doaj   +1 more source

Evaluation of Landweber Coupled Least Square Support Vector Regression Algorithm for Electrical Capacitance Tomography for LN2–VN2 Flow

open access: yesEnergies, 2023
The electric capacitance tomography (ECT) technique has been widely used in phase distribution reconstruction, while the practical application raised nonideal noise and other errors for cryogenic conditions, requiring a more accurate algorithm.
Ze-Nan Tian   +3 more
doaj   +1 more source

Evaluation of InGaAs/InP photodiode for high-speed operation at 4 K

open access: yesInternational Journal of Metrology and Quality Engineering, 2018
An optically controlled high-speed current source located at 4 K is likely to improve the performance of pulse-driven Josephson junction arrays. A custom photodiode module with an Albis PDCS24L InGaAs/InP PIN photodiode is investigated in order to ...
Bardalen Eivind   +4 more
doaj   +1 more source

Development of Precise Low Value Capacitance Measurement System for Cryogenics Two Phase Flow Application [PDF]

open access: yesJournal of Electrical and Electronics Engineering, 2018
In cryogenic two phase flow, it is always challenging to measure the quality and void fraction. In this regard, an effort has been made to indigenously develop an electronic circuit to measure the void fraction by measuring the capacitance of the order ...
SINGH Gaurav Kumar   +4 more
doaj  

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