Results 81 to 90 of about 330,769 (355)
Acta Scientiarum Polonorum: Hortorum Cultus, 2015 Vegetables have a significant place in the healthy eating pyramid. It is recommended that vegetables should be consumed as often as possible to provide nutritional and biologically active substances.
Renata Nurzyńska-Wierdak
doaj
Heat removal system for shutdown in nuclear thermal rockets and advanced concepts [PDF]
, 2017 © 2016 by the American Institute of Aeronautics and Astronautics, Inc.It is well-known that a nuclear thermal rocket (NTR) cannot be abruptly shut down. After a power manoeuver, the reactor has contaminated itself with fission products and the decay heat
Arias Montenegro, Francisco Javier +1 more
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British Journal of Clinical Pharmacology, EarlyView.Aim Our international cohort study assessed the comparative effectiveness and safety of direct oral anticoagulants (DOACs) and vitamin K antagonists (VKAs) among patients with non‐valvular atrial fibrillation (NVAF) using antiarrhythmic drugs. Methods Using the United Kingdom's (UK's) Clinical Practice Research Datalink Aurum and Québec claims data, we
Fabian Maximilian Meinert +5 more
wiley +1 more source
Thermal and acceleration load analysis of new 122 mm rocket propellant grain [PDF]
Scientific Technical Review, 2016 In order to achieve very strong inter-ballistic requirements, a unusual free standing rocket motor propellant grain was designed, with variable channel diameter.
Gligorijević Nikola +4 more
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Cambridge Rocketry Simulator – A Stochastic Six-Degrees-of-Freedom Rocket Flight Simulator
Journal of Open Research Software, 2017 The Cambridge Rocketry Simulator can be used to simulate the flight of unguided rockets for both design and operational applications. The software consists of three parts: The first part is a GUI that enables the user to design a rocket.
Willem J. Eerland +2 more
doaj +1 more source
Young people's occupational aspirations beyond the aspiration discourse: A sociocultural perspective
British Educational Research Journal, EarlyView.Abstract Young people's aspirations have been the focus of many educational, sociological and psychological studies. This paper argues, firstly, that the concept of aspirations holds greater generative potential than suggested by the policy‐oriented ‘aspiration discourse’.
Jelena Popov
wiley +1 more source
A review on the stability of magnetorheological materials
Manufacturing ReviewMagnetorheological materials, as a type of intelligent controllable material, have broad application prospects in the engineering field. However, stability issues (such as sedimentation, particle agglomeration, and extreme temperature adaptability ...
Sang Yuanyuan +5 more
doaj +1 more source
Review of Classical Diffusion-Limited Regression Rate Models in Hybrid Rockets
Aerospace, 2019 In this article, we undertake a concise review of several milestone developments in classical regression rate models of hybrid rocket motors. After a brief description of the physical processes entailed in hybrid rocket combustion, Marxman’s ...
Timothy Marquardt, Joseph Majdalani
doaj +1 more source
Supersonic-combustion rocket [PDF]
, 1973 A supersonic combustion rocket is provided in which a small rocket motor is substituted for heavy turbo pumps in a conventional rocket engine. The substitution results in a substantial reduction in rocket engine weight. The flame emanating from the small
Franciscus, L. C., Weber, R. J.
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Synthesis of calculational methods for the design and analysis of radiation shields for nuclear rocket systems. Volume 2 - Analysis of radiation measurements in a nuclear rocket propellant tank mockup using simulated liquid hydrogen [PDF]
, 1968 Calculational methods for nuclear rocket radiation shield design - analysis of radiation measurements in nuclear rocket propellant tank mockup using simulated liquid ...
Disney, R. K. +3 more
core +2 more sources