871 research outputs found
Effects of Stacking Sequence on Nonlinear Hydroelastic Behavior of Composite Propeller Blade
No full textThe numerical simulation of friction constrained motions (II): Multiple degrees of freedom models
No full textAbstractIn a previous article (Ref. [R. Glowinski, L.J. Shiau, Y.M. Kuo, G. Nasser, The numerical simulation of friction constrained motions (I): One degree of freedom models, Applied Mathematics Letters 17 (2004) 801–807]) the authors discussed the application of operator-splitting methods to the time-discretization of those mathematical relations describing the behavior of elasto-dynamical systems with friction, focusing on one-degree of freedom models. The main goal of the present article is to generalize the methodology discussed in Ref. [R. Glowinski, L.J. Shiau, Y.M. Kuo, G. Nasser, The numerical simulation of friction constrained motions (I): One degree of freedom models, Applied Mathematics Letters 17 (2004) 801–807]; there are no conceptual difficulties in doing so, the main issue being the computation of a vector-valued multiplier modeling the friction forces (or part of them). An iterative method allowing the computation of this multiplier will be discussed and the results of numerical experiments will be presented
Turbulent skin-friction drag reduction by travelling waves induced by spanwise Lorentz force
No full textThe streamwise and spanwise travelling waves induced by spanwise Lorentz force are studied for skin-friction drag reduction in a turbulent channel. The streamwise travelling wave by spanwise Lorentz force on drag reduction is compared to the with the spanwise wall motion. The drag reduction map shows a drag reduction region and a drag increase region, depending on a time scale . For spanwise travelling wave, a large drag reduction appears at large oscillation frequencies and small spanwise wave numbers, while all stationary wave cases give a drag increase. When the wave travels at an oblique angle to the streamwise mean flow, the optimal drag reduction appears in backward travelling wave case. Generally, the backward streamwise travelling wave is found to be most efficient in drag reduction among all oblique travelling waves. Spanwise oscillation, forward streamwise travelling, spanwise travelling and backward streamwise travelling wave cases share a similar drag reduction mechanism: first, the spanwise motion directly breaks the near wall quasi-streamwise vortices structure array \cite{Jeong_etal1997}, which results in the shortening of streamwise streaks; second, the spanwise velocity layer maintains the asymmetry of the positive and negative quasi-streamwise vortices, which leads to a sustained drag reduction
Effects of Different Forest Thinning Treatments on Soil Net Nitrogen Mineralization and Nitrification in a Cryptomeria japonica Plantation.
No full textThe Ontology of the Causal Basis of Man : To the Theory of Time
No full textIn 2014, Amirbegov Y.M.'s monograph titled "Mechanics of Thinking" or "Ontological Basis of the Subject" was published, which dealt with a philosophical question: the relationship of matter with consciousness and time of our being. But since the monograph duplicated the thesis conceived by the author and did not go beyond the material presented in it, on the advice of the consultant the author of the monograph is preparing its second edition in an expanded version with a new title: " Ontology of Causal Basis of Man", attracting his mentor, the author of "The Theory of Time or Principle of Formation of Matter Forms" Amirbegov M.R., as a co-author of this book,
Adhering to the opinion that matter between past and future temporal conti-nuity of eternity is reduced to nothing and in reality there remains only a causeless "Nothing", the authors of this book from a clean sheet, but with baggage of knowledge about objective forms of being and causeless reality with its possibili-ties, build an unparalleled theoretical model of human integrity, answering the question: what does a man, his sensorium, consciousness, his thinking apparatus and thought itself, why and how? The authors submit this book to the judgment of the reader
The Ontology of the Causal Basis of Man : To the Theory of Time
Full text linkIn 2014, Amirbegov Y.M.'s monograph titled "Mechanics of Thinking" or "Ontological Basis of the Subject" was published, which dealt with a philosophical question: the relationship of matter with consciousness and time of our being. But since the monograph duplicated the thesis conceived by the author and did not go beyond the material presented in it, on the advice of the consultant the author of the monograph is preparing its second edition in an expanded version with a new title: " Ontology of Causal Basis of Man", attracting his mentor, the author of "The Theory of Time or Principle of Formation of Matter Forms" Amirbegov M.R., as a co-author of this book,
Adhering to the opinion that matter between past and future temporal conti-nuity of eternity is reduced to nothing and in reality there remains only a causeless "Nothing", the authors of this book from a clean sheet, but with baggage of knowledge about objective forms of being and causeless reality with its possibili-ties, build an unparalleled theoretical model of human integrity, answering the question: what does a man, his sensorium, consciousness, his thinking apparatus and thought itself, why and how? The authors submit this book to the judgment of the reader
On quantum entanglement, measurement and decoherence in nanosystems
No full textThis thesis discusses the interplay between entanglement, measurement and decoherence in quantum nanosystems.Theoretical Physics - Kavli Institute of Nanoscience DelftApplied Science
Ultimate performance of GRP-laminates under in-plane biaxial loading
No full textCivil Engineering and Geoscience
RNF4 Is a Coactivator for Nuclear Factor Y on GTP Cyclohydrolase I Proximal Promoter
No full textGTP cyclohydrolase I (GCH) is the rate-controlling enzyme in the production of tetrahydrobiopterin (BH4) that is essential for the synthesis of nitric oxide and catecholamines including dopamine and serotonin. Therefore, the regulation of GCH expression is important in determining the catecholamine levels in the brain under pathophysiological conditions. During the study of human disease dopa-responsive dystonia, we found that coactivator RNF4 is involved in the GCH gene expression. Through serial deletion and mutagenesis studies of the GCH promoter, we defined the RNF4-responsive element on GCH proximal promoter as a CCAAT box. RNF4 did not possess specific DNA binding activity toward this CCAAT box, which suggests that RNF4 may be a coactivator of the CCAAT box-binding protein nuclear factor Y (NF-Y). Cotransfection of a dominant-negative mutant of NF-Y resulted in a significant reduction in RNF4-mediated CCAAT box activation. In addition, overexpression of RNF4 could not activate the CCAAT box in Drosophila melanogaster SL2 cells, which are devoid of endogenous NF-Y, whereas overexpression of RNF4 and NF-Y could. Furthermore, immunoprecipitation experiments revealed the physical association between RNF4 and the NF-Y complex. These data indicate that RNF4 imposes functional importance on GCH promoter
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