نتایج جستجو برای: oxygen cylinders

تعداد نتایج: 216776  

Journal: :Physical review letters 2011
Dennis P M van Gils Sander G Huisman Gert-Wim Bruggert Chao Sun Detlef Lohse

We analyze the global transport properties of turbulent Taylor-Couette flow in the strongly turbulent regime for independently rotating outer and inner cylinders, reaching Reynolds numbers of the inner and outer cylinders of Re(i) = 2×10(6) and Re(o) = ±1.4×10(6), respectively. For all Re(i), Re(o), the dimensionless torque G scales as a function of the Taylor number Ta (which is proportional t...

2009
R. W. C. LEWIS C. R. BOWEN A. C. E. DENT

The harmonic response and modal shapes of axially-symmetrical piezoceramic cylinders (tubes) polarised through the wall thickness have been predicted by finite element methods and determined experimentally. Analysis of ceramic cylinders has concentrated on the effects of the variation of diameter to thickness (d/t) ratios, and change in cylinder length (l). Investigation has taken into account ...

2002
Nassir Navab

This paper first introduces a canonical representation for cylinders. The canonical representation introduced here is closely related to the Plücker line respresentation. It then drives the general equation of a cylinder using this representation. In this paper, we also show that this representation is an appropriate one for computer vision applications. In particular, it allows us to easily de...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2001
M D Betterton M P Brenner

Under special conditions bacteria excrete an attractant and aggregate. The high density regions initially collapse into cylindrical structures, which subsequently destabilize and break up into spherical aggregates. This paper presents a theoretical description of the process, from the structure of the collapsing cylinder to the spacing of the final aggregates. We show that cylindrical collapse ...

1999
Bruce Hughes

We characterize those maps between homotopically stratified spaces whose mapping cylinders are also homotopically stratified spaces. Two applications are offered. The first concerns locally flat submanifolds of topological manifolds, and the second concerns algebraic maps between algebraic varieties.  1999 Elsevier Science B.V. All rights reserved.

2004
M. Al Sharkawy A. Z. Elsherbeni S. F. Mahmoud

The electromagnetic scattering from a 2D chiral circular cylinders, illuminated by either a TEz or a TMz plane wave, is investigated using an iterative scattering procedure. The developed formulation and the implemented code simulate different types of cylinders, where the cylinders can be made of anisotropic chiral material with uniform or non-uniform chiral admittance distribution, homogeneou...

Journal: :Journal of Experimental Botany 2008
Tom Masselter Thomas Speck

The anatomy of young and old stems of Aristolochia macrophylla has been investigated for a better understanding of how secondary growth processes cause changes in the stem anatomy of a lianescent plant. In A. macrophylla, following an increase in volume of secondary vascular tissues, the cortical tissues are deformed and the outer sclerenchymatous cylinder ruptures. Morphometric measurements pr...

Journal: :IEEE Trans. Pattern Anal. Mach. Intell. 1996
Mourad Zerroug Ramakant Nevatia

Invariant properties of straight homogeneous generalized cylinders and their contours, " [24] K. Rao and R. Nevatia, " Description of complex objects from incomplete and imperfect data, " In International Journal of Computer Vision. [34] M. Zerroug and R. Nevatia, " Quasi-invariant properties and 3-D shape recovery of non-straight, non-constant generalized cylinders " , In Proceedings of Comput...

2009
Oded Goldreich

We present a candidate counterexample to the easy cylinders conjecture, which was recently suggested by Manindra Agrawal and Osamu Watanabe (see ECCC, TR09-019). Loosely speaking, the conjecture asserts that any 1-1 function in P/poly can be decomposed into “cylinders” of sub-exponential size that can each be inverted by some polynomial-size circuit. Although all popular one-way functions have ...

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