Results 51 to 60 of about 186,008 (265)

Air dehumidification by membrane with cold water for manned spacecraft environmental control

open access: yesMATEC Web of Conferences, 2017
The traditional condensation dehumidification method requires additional gas-liquid separation and water recovery process in the manned spacecraft humidity control system, which would increase weight and complexity of systems.
Shang Yonghong   +6 more
doaj   +1 more source

Blend Electrodes in Lithium‐Ion Batteries: Investigation of Inhomogeneities Using a Spatially Resolved Transmission Line Model

open access: yesBatteries &Supercaps, EarlyView.
A model for blend electrodes is developed, parameterized, and validated using experimental data from a SiOx/Gr electrode. The model provides information about local states, such as the degree of lithiation or material‐specific C‐rates, distinguishing between the two active materials.
Maximilian Schamel   +3 more
wiley   +1 more source

Fiber Optic Acoustic Vibration Sensors for Ultrasound Measurement in Low-Pressure CO₂ Environment

open access: yesIEEE Access, 2020
The detection of acoustic signals in the Martian environment is significant to understand the issues such as the evolution of the universe, structure of matter, origin of life, and future migration of humans.
Jingchuan Zhang, Yifei Pei, Xiyuan Li
doaj   +1 more source

Space Propulsion Technology for Small Spacecraft

open access: yesProceedings of the IEEE, 2018
As small satellites become more popular and capable, strategies to provide in-space propulsion increase in importance. Applications range from orbital changes and maintenance, attitude control and desaturation of reaction wheels to drag compensation and ...
D. Krejci, P. Lozano
semanticscholar   +1 more source

Knowledge acquisition in science and the blurred boundary between perception and cognition

open access: yesBritish Educational Research Journal, EarlyView.
Abstract This paper provides a critical and detailed study of what researchers in the fields of contemporary cognition and neuroscience have revealed about the blurred boundary between perception and cognition. We set out the arguments with a view to what researchers and teachers should now consider regarding the subtleties of their interrelationship ...
T. G. K. Bryce, E. J. Blown
wiley   +1 more source

Recent Advances in Achieving High Energy/Power Density of Lithium–Sulfur Batteries for Current and Near‐Future Applications

open access: yesBattery Energy, EarlyView.
This review comprehensively addresses challenges impeding the current and near‐future applications of Li–S batteries, with a special focus on novel strategies and materials for achieving high energy/power density. Additionally, potential areas for practical applications are explored, placing special emphasis on their lightweight, high energy/power ...
Junyoung Heo   +9 more
wiley   +1 more source

Design of Real-Time Database for the Vacuum Cold-Black Environment Simulator

open access: yesMATEC Web of Conferences, 2018
There is an urgent need to develop a real-time database (RTDB) to handle large amounts of real-time data, to realize process monitoring of vacuum cold-black environment simulation, cold-black environment data acquisition, fault processing, data storage ...
Shao Jingyi, Ning Juan, Liu Yangyang
doaj   +1 more source

Damage Effects of Electron Irradiation with Different Energy on Mechanical Properties of Polyethylene Heat-shrinkable Sleeves

open access: yesJournal of Aeronautical Materials, 2016
Damage effects of electron irradiation with different energy on mechanical properties of polyethylene heat-shrinkable sleeves were studied by irradiating the sleeves with 45 keV, 1 MeV and 2 MeV electrons respectively.
LIU Yuming   +4 more
doaj   +1 more source

Frontiers of Synchrotron Methods for Actinide Science

open access: yesChemistry–Methods, EarlyView.
This article explores the application of synchrotron radiation techniques ‐ XAS, XES, HERFD, RIXS, and XRD ‐ to investigate actinide materials. It provides insights into electronic structures, oxidation states, and phase transitions, emphasizing the transformative role of these techniques in advancing nuclear materials research, environmental safety ...
Damien Prieur   +7 more
wiley   +1 more source

Distributed State Estimation for Networked Spacecraft Thermal Experiments Over Sensor Networks With Randomly Varying Transmission Delays

open access: yesIEEE Access, 2018
This paper investigates the distributed state estimation problem for spacecraft thermal experiments over sensor networks. The state estimators are designed in a distributed fashion to estimate the surplus temperature of the target node in the spacecraft.
Chang Liu   +4 more
doaj   +1 more source

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