Results 1 to 10 of about 2,946 (146)
Aerobic capacity and cardiopulmonary variables are not different between premenopausal, late premenopausal, perimenopausal, and postmenopausal women [PDF]
Physiological ReportsMenopause may contribute to declining aerobic capacity alongside aging; whether this is related to declines in physical activity or alterations in physiology is unclear.
Catherine A. Rattley +6 more
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UPF1 plays critical roles in early B cell development [PDF]
Nature CommunicationsThe ATP-dependent RNA helicase UPF1 plays a crucial role in various mRNA degradation pathways, most importantly in nonsense-mediated mRNA decay (NMD). Here, we show that UPF1 is upregulated during the early stages of B cell development and is important ...
Noriki Iwai +6 more
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Applied Sciences, 2022 This paper compares various optimization techniques and objective functions to obtain optimum rocket engine performances. This research proposes a modular optimization framework that provides an optimum design for Gas Generator (GG) and Staged Combustion
Suniya Sadullah Khan +5 more
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Qualitative, Quantitative, In Vitro Antioxidant Activity and Chemical Profiling of Leptadenia pyrotechnica (Forssk.) Decne Using Advanced Analytical Techniques [PDF]
AntioxidantsLeptadenia pyrotechnica Forssk. Decne (LP) is a medicinal herb from the Asclepiadaceae family with many advantageous properties. The goal of this research is to identify, quantify, and evaluate the antioxidant potential of LP to validate its remarkable ...
Divya Kumari +4 more
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MachinesBall bearings are one of the most critical components of rotating machines. They ensure shaft support and friction reduction, thus their malfunctioning directly affects the machine’s performance.
Federica Galli +5 more
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Upper Stage Liquid Propellant Rocket Engine: A Case Analysis [PDF]
Journal of Aerospace Technology and Management, 2021 This paper provides an overview of the design and development process for the L75 liquid propellant rocket engine (LPRE) foreseen as upper stage of a satellite launch vehicle application.
Daniel Soares de Almeida +2 more
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Aerospace, 2023 This study presents an optimal design approach of a pintle injector for a deep throttlable liquid-propellant rocket engine (LPRE). Even though the pintle injector is used in rocket engines, it has become more important since reusable launch vehicles ...
Jihyoung Cha +2 more
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The Value 1 Problem Under Finite-memory Strategies for Concurrent Mean-payoff Games [PDF]
, 2014 We consider concurrent mean-payoff games, a very well-studied class of two-player (player 1 vs player 2) zero-sum games on finite-state graphs where every transition is assigned a reward between 0 and 1, and the payoff function is the long-run average of
Chatterjee, Krishnendu +1 more
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L-pre- and L-semi-P- compact Spaces
مجلة بغداد للعلوم, 2011 The purpose of this paper is to study a new types of compactness in the dual bitopological spaces. We shall introduce the concepts of L-pre- compactness and L-semi-P- compactness .
Baghdad Science Journal
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Experimental investigation of the parameters of additively manufactured coaxial swirl injectors
Challenges and Issues of Modern Science, 2023 Modern development of the intense competition on the market of Liquid Propellant Rocket Engines (LPRE) is mostly driven by occurrence of many private space companies, crowdfunding space projects, etc., which inevitably leads engineers to seeking of ...
Samir Vekilov +3 more
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