Results 61 to 70 of about 608,631 (290)
Thrust-isolating mounting [PDF]
, 1974 A supporting frame for a load, such as one or more telescopes, is isolated from all multi-gravitational forces, which will be developed within that load as that load is propelled into space, by using a shroud to fully and solidly hold that load until ...
Wetzler, D. G.
core +1 more source
Transfer of Energy and Momentum Between Magnetoactive Surface Microstructure and a Solid Object
Advanced Engineering Materials, EarlyView.We demonstrate that magnetoactive multilamellar arrays subjected to a rotating magnetic field can function as platforms for controlled transport of physical objects. Through systematic experimental investigation, we elucidate the underlying physical mechanisms determining the upper limit of the achievable transportation speed in such magnetic “conveyor‐
Arne Geldof +9 more
wiley +1 more source
DNA actively regulates the “safety-belt” dynamics of condensin during loop extrusion
Nature CommunicationsCondensin plays an essential role in genome folding through its active DNA loop extrusion activity. Condensin contains a binding interface between its Ycg1 HEAT-repeat subunit and the Brn1 kleisin, together forming a “safety-belt” DNA-binding groove ...
Jinyu Chen +3 more
doaj +1 more source
FireThis study investigates the performance, emissions, and physicochemical characteristics of a small-scale gas turbine fueled with Jet A and camelina biodiesel blends (B10, B20, and B30). The blends were characterized by slightly higher density (up to +3%),
Cornel Dinu +3 more
doaj +1 more source
Study on the thrust generated by a thin plate imitating fish’s caudal fin
Nihon Kikai Gakkai ronbunshu, 2016 Purpose of this study is to investigate the relation between the shape of a thin plate and thrust force. The thin plate is what imitates the fish’s caudal fin. We adopt an equilateral triangular, square, regular pentagon and hexagon as the shape of the
Mitsuhiro NAKAJIMA +2 more
doaj +1 more source
Influence of an Argon/Silane Atmosphere on the Temperature of a Thermal Plasma
Advanced Engineering Materials, EarlyView.The influence of a silane‐doped argon atmosphere on the chemical composition and temperature of a thermal nontransferring argon plasma is investigated using optical emission spectroscopy. As a result of the high amount of free electrons resulting from the stepwise ionization and dissociation of the silane molecule, even a silane addition of 0.01 vol ...
Lena Kreie +4 more
wiley +1 more source
Advanced Functional Materials, EarlyView.PBTTT‐OR‐R, a C14‐alkoxy/alkyl‐PBTTT polymer derivative, is of substantial interest for optoelectronics due to its specific fullerene intercalation behavior and enhanced charge‐transfer absorption. Comparing this polymer with (S) and without (O) homocoupling defects reveals that PBTTT‐OR‐R(O) forms stable co‐crystals with PC61BM, while PBTTT‐OR‐R(S ...
Zhen Liu +14 more
wiley +1 more source
Evaluation of various thrust calculation techniques on an F404 engine [PDF]
In support of performance testing of the X-29A aircraft at the NASA-Ames, various thrust calculation techniques were developed and evaluated for use on the F404-GE-400 engine. The engine was thrust calibrated at NASA-Lewis.
Ray, Ronald J.
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Take-off mechanics in hummingbirds (Trochilidae) [PDF]
, 2004 Initiating flight is challenging, and considerable effort has focused on understanding the energetics and aerodynamics of take-off for both machines and animals.
Altshuler, Douglas L. +2 more
core +2 more sources
Advanced Functional Materials, EarlyView.This work explores Li‐substituted P2 layered oxides for Na‐ion batteries by crystallographic and electrochemical studies. The effect of lithium on superstructure orderings, on phase transitions during synthesis and electrochemical cycling and on the interplay of O‐ versus TM‐redox is revealed via various advanced techniques, including semi‐simultaneous
Mingfeng Xu +5 more
wiley +1 more source