Results 81 to 90 of about 6,665,424 (368)
Nature CommunicationsAtmospheric entry of asteroids or comets can cause significant damage to Earth. Two international bodies, the International Asteroid Warning Network (IAWN), and the Space Mission Planning Advisory Group (SMPAG) are working on dealing with potential ...
Detlef V. Koschny +2 more
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Fox’s H-Functions: A Gentle Introduction to Astrophysical Thermonuclear Functions
AxiomsNeeded for cosmological and stellar nucleosynthesis, we are studying the closed-form analytic evaluation of thermonuclear reaction rates. In this context, we undertake a comprehensive analysis of three largely distinct velocity distributions, namely the ...
Hans J. Haubold +2 more
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Advanced Engineering Materials, EarlyView.In this experimental study, the mechanical properties of additively manufactured Ti‐6Al‐4V lattice structures of different geometries are characterized using compression, four point bending and fatigue testing. While TPMS designs show superior fatigue resistance, SplitP and Honeycomb lattice structures combine high stiffness and strength. The resulting
Klaus Burkart +3 more
wiley +1 more source
Stretching factors, metrics and train tracks for free products
, 2015 In this paper we develop the metric theory for the outer space of a free product of groups. This generalizes the theory of the outer space of a free group, and includes its relative versions.
Francaviglia, Stefano, Martino, Armando
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Advanced Engineering Materials, EarlyView.The study investigates novel semi‐finished products made of unidirectionally arranged hemp or pineapple leaf fiber‐reinforced composites produced from different matrices. The materials are analyzed in terms of their mechanical and interfacial properties and void content.
Nina Graupner +22 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.This study proposes a new methodology for producing metal matrix nanocomposites in the solid state. The process involves the plasma‐assisted thermochemical treatment of metallic alloy powders. As a proof‐of‐concept, TiN nanoparticles are synthesized directly on the surface of FeTi intermetallic powder particles, enabling the development of the ...
Deivison Daros Paim +4 more
wiley +1 more source
HUMANITY, FROM PEACEFUL EXPLORATION OF OUTER SPACE TO ITS CONQUEST THROUGH SPACE FORCES, ANTI-SATELLITE WEAPONS AND STATE OF THE ART SPACE TECHNOLOGIES [PDF]
Annals: Series on Military Sciences, 2019 For a long period of time, usage of outer space for humankind was limited to observing outer space constellations, navigation and prediction of meteorological phenomena.
Valentin BECHERU, Adrian STAN
doaj
Calibrating pressure switch [PDF]
, 1968 A pressure switch assembly comprising a body portion and a switch mechanism having a contact element operable between opposite limit positions is described. A diaphragm chamber is provided in the body portion which mounts therein a system diaphragm and a
Smith, N. J.
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Report on the Twelfth United Nations/European Space Agency Workshop on Basic Space Science
, 2006 Pursuant to recommendations of the United Nations Conference on the Exploration and Peaceful Uses of Outer Space (UNISPACE III) and deliberations of the United Nations Committee on the Peaceful Uses of Outer Space (UNCOPUOS), annual UN/European Space ...
Haubold, H. J., Wamsteker, W.
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Screen‐Printed Flexible Piezoelectric Force Sensor Array with Electromagnetic Interference Shielding
Advanced Engineering Materials, EarlyView.This article introduces a flexible screen‐printed piezoelectric sensor array designed for low‐frequency healthcare applications such as tactile sensing and cardiovascular monitoring. The device integrates interface electronics enabling the simultaneous acquisition of up to 128 signals, along with flexible EMI shielding that significantly reduces noise ...
Joseph Faudou +6 more
wiley +1 more source