4,639 research outputs found
Katalog der Musikbibliothek Peters ...
No full textClassified, with author indexes.Preface signed: C.F. Peters. Dr. Emil Vogel, bibliothekar.Abth. 1. Theoretische Werke.--Abth. 2. Praktische Werke.Mode of access: Internet
Degradation of 2-Naphthalenesulfonate in Aqueous Solution by Hydrogen Peroxide in the Presence of Basic Oxygen Furnace Slag
No full textMotion of quantum vortex lines near realistic rough boundaries
No full textWe numerically solve the three--dimensional, time--dependent Gross--Pitaevskii equation to model a superfluid flowing over a realistic rough boundary. Our model for the boundary is based on the atom--force microscope image of a NbTi vibrating wire used to generate turbulence in actual experiments. We find that near the boundary a dense region of quantum vortices is created, which forms a kind of `superfluid boundary layer'
Wave excitations in adjacent vortex filaments
No full textThe interactions of the nearest neighbour vortices are argued to play a significant role in the crossover range of scales that lies between the Kolmogorov-Richardson cascade and the Kelvin wave driven cascade in superfluid turbulence. In this work, we study how a wave excitation (a Kelvin wave or a soliton) on a vortex affects a nearby straight vortex. Our numerical simulations reveal that coherent excitations can hop from one vortex filament to another whilst retaining their coherent properties
Spectral properties of Andreev reflection from quantum turbulence in 3He-B: What do they tell about turbulent fluctuations?
No full textOne of the experimental techniques developed to measure quantum turbulence at low temperatures in 3He-B utilizes the Andreev reflection of thermal quasiparticle excitations from quantized vortices and vortex structures. We present the results of theoretical, numerical, and experimental study of Andreev scattering from quantum turbulence in 3He-B. We analyze the spectral properties of the Andreev reflection and compare these with the spectral properties of superfluid turbulence, and discuss the physical mechanisms responsible for the scaling of spectral densities. Finally, we discuss the relation between our findings and related observables in ordinary turbulence
Juncus tobdenii Noltie (Juncaceae), a New Record from Northern Taiwan
No full text本文報導最近發現於臺灣?部地區原分布於印?錫?地區之新紀?植物--鴛鴦湖燈心草 (Juncus tobdenii Noltie)，本文描述其形態特徵及生育地?況，並提供彩色照片以供鑑定之用，同時與近似物種燈心草 (Juncus effuses L.) 之差?點亦加以?明。Juncus tobdenii Noltie, a species distributed in India (Sikkim), has recently been found in northern Taiwan. A full taxonomic description, habitat information and color photographs are provided here
Temperature dependence of quantized states in an In0.86Ga0.14As0.3P0.3/InP quantum well heterostructure
No full textMineralization of Polyethylene Glycol in Aqueous Solution by Hydrogen Peroxide with Basic Oxygen Furnace Slag.
No full textEffects of Personal Exposure to Particulate Matter and Ozone on Arterial Stiffness and Heart Rate Variability in Healthy Adults
No full textA Fuzzy-based Scoring Rule for Author Ranking: an alternative to h-index
No full textThe measurement of the quality of research has reached nowadays an increasing interest not only for scientific reasons but also for the critical problem of researchers' ranking, due to the lack of grant assignments. The most commonly used approach is based on the so-called h-index, even if the current literature debated a lot about its pros and cons. This paper, after a brief review of the h-index and of alternative models, focuses on the characterization and the implementation of a modified scoring rule approach by means of a fuzzy inference system a là Sugeno
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