نتایج جستجو برای: rotating conical die

تعداد نتایج: 166482  

2011
S. A. Matos C. R. Paiva

The study of conical refraction for media other than biaxial non-magnetic crystals has never been considered in the literature – as far as the authors are aware. Hence, in this paper, we investigate how conical refraction can arise for broader classes of biaxial metamaterials using a new classification scheme previously developed by the authors. Namely, conical refraction is shown to occur for ...

With the development of highly-deviated well cementing techniques, rotating casing cementing technology has got more and more attention. The rotating casing technique can improve the displacement efficiency of cement paste, and then enhance the quality of well cementation. In the stuck section, the rotating casing can redress the well to make the casing run sequentially. The casing endures shea...

Journal: :Energies 2023

This particular study focuses on investigating the heat and mass transport characteristics of a liquid flow across conical gap (CG) cone-disk apparatus (CDA). The cone disk may be taken as stationary or rotating at varying angular velocities. Consideration is given to affected by solar radiation. Rosseland approximation used for radiation calculations in current work. To observe deposition vari...

Journal: :نشریه دانشکده فنی 0
ناصر توحیدی

es wird gezeigt, dass bei der standiger zunahme der production von roheisen ,die fast ausschliesslich in hochofen erfolgt, der gestelldurchmesser und die ofeneinheit zunimmt demgegenuber der spezifische brennstoffverbrauch abnimmt. weiterhin wird die entwicklungsrichtung der stahlerzeungsverfanren wegen der wirtschaftlichen und technischen hinsicht untersucht und festgestellt, dass nuter versch...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1969
S Helgason

From the point of view of the duality between points and horocycles in a symmetric space, the counterparts to the spherical functions on the symmetric space are the conical distributions on the manifold of horocycles. While the conical functions are closely related to certain finite-dimensional representations of semisimple Lie groups, in the present work the conical distributions are found to ...

Journal: :international journal of nano dimension 0
s. rahimnejad 1department of chemistry, islamic azad university-shahre rey branch, tehran, iran. m. mirzaei department of chemistry, islamic azad university-lahijan branch, lahijan, iran.

density functional theory (dft) calculations were performed to investigate the properties of planar, tubular and conical forms of silicon nanostructures. the evaluated parameters including averaged bond lengths, binding energies, gap energies and dipole moments were then evaluated for the optimized models of study. the results indicated that the bond lengths between silicon atoms are different ...

2010
Thomas Auzinger

1 Abstract — Zusammenfassung We study three-dimensional rapidly rotating Bose-Einstein condensates in a theoretical context. The main results are lower and upper bounds on the Gross-Pitaevskii energy of the dilute Bose gas in the Thomas-Fermi limit. Similar results were already obtained for strongly anharmonic external potentials in 2D [CRDY07b, CY08] and homogeneous external potentials in 2D [...

ژورنال: مواد پرانرژی 2012
دولت‌آبادی فراهانی, جواد, علوی‌نیا, علی,

Oblique impact of cylindrical projectiles with blunt, conical and hemispherical noses with different aspect ratios on metallic targets with different thicknesses is investigated and penetration critical angle is determined. Circular targets of Al1100-H12 had a diameter of 240mm and thicknesses of 1, 2 and 3mm. Steel work hardened projectiles with blunt, conical and hemispherical noses are made ...

2007
R. D. Mau

We show that the set of conical points of a rational function of the Riemann sphere supports at most one conformal measure. We then study the problem of existence of such measures and their ergodic properties by constructing Markov partitions on increasing subsets of sets of conical points and by applying ideas of the thermodynamic formalism. Introduction. In this paper we recall from [U2] the ...

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