Results 51 to 60 of about 5,829,464 (200)
Topography of Photochemical Initiation in Molecular Materials [PDF]
Molecules, 2013 We propose a fluctuation model of the photochemical initiation of an explosive chain reaction in energetic materials. In accordance with the developed model, density fluctuations of photo-excited molecules serve as reaction nucleation sites due to the stochastic character of interactions between photons and energetic molecules. A further development of
Aluker, Edward D. +4 more
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Does the bracket composition material influence initial biofilm formation?
Indian Journal of Dental Research, 2015 Context: Orthodontic treatment has been reported to contribute to the development and accumulation of dental biofilm, which is commonly found on bracket and adjacent surfaces. Aims: The aim of this work is to test the hypothesis if there are differences
Gustavo Antônio Martins Brandão +4 more
doaj +1 more source
Comparative energy storage assessment item [PDF]
, 1984 This analysis, a Space Station application study, rediscovered Integrated Power and Attitude Control (IPAC) and found the approach to have lower initial and resupply weight and lower initial and resupply cost than either battery/CMG or regenerative fuel ...
Giudici, B.
core +1 more source
Influence of roughness on ZDDP tribofilm formation in boundary lubricated fretting [PDF]
, 2012 Influence of initial surface topography on tribofilm formation in ZDDP lubricated contact was analysed. A small displacement fretting tests with sinusoidal motion were carried out in classical sphere/plane configuration.
Burkinshaw M +13 more
core +2 more sources
Овощи России, 2017 The market of Moldova has a large assortment of seed of foreign selection, such as large-fruited tomatoes, cherry and cocktail tomato. Therefore, it is necessary to launch the breeding program for hybrid development of local origin tomato typed, such as ‘
R. K. Rechets
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Crack path selection at the interface of wrought and wire+arc additive manufactured Ti–6Al–4V [PDF]
, 2016 Crack propagation deviation tendency in specimens containing an interface between wrought alloy substrate and Wire + Arc Additive Manufacture (WAAM) built Ti–6Al–4V is investigated from the viewpoints of microstructure, residual stress and bi-material ...
Addison +39 more
core +3 more sources
Fracture initiation from initial spherical flaws in incompressible propellant materials [PDF]
Matéria (Rio de Janeiro), 2015 The scope of the present article is the study of the fracture initiation from initial spherical flaws in incompressible propellant materials. Using a constitutive law, derived from the neo-Hookean strain energy function, one may deduce the relation between the radial pressure applied at infinity and the corresponding extension ratio, at the surface of ...
Kakavas, Panayiotis A. +1 more
openaire +3 more sources
Methods of determining loads and fiber orientations in anisotropic non-crystalline materials using energy flux deviation [PDF]
, 1993 An ultrasonic wave is applied to an anisotropic sample material in an initial direction and an angle of flux deviation of the ultrasonic wave front is measured from this initial direction. This flux deviation angle is induced by the unknown applied load.
Fitting, Dale W. +2 more
core +1 more source
Initial Chemical Events in the Energetic Material RDX under Shock Loading: Role of Defects [PDF]
, 2004 We use the recently developed reactive force field ReaxFF with molecular dynamics (MD) to study the role of voids on the initial chemical events in the high-energy material RDX under shock loading.
Goddard, William A., III +2 more
core +1 more source
Овощи России, 2016 The vegetable marrow and pumpkin are valuable vegetable crops thanks to high food and dietary qualities of fruits. Russia is on the third place in the world on gross yield of these crops, but on productivity takes the 11th place among the European ...
T. M. Piskunova, Z. F. Muteva
doaj +1 more source