نتایج جستجو برای: conical

تعداد نتایج: 7082  

2006
Jason Glyndwr Ulery

Two-particle azimuthal correlations in central Au+Au collisional at RHIC have revealed a broadened away-side structure, with respect to perpherial Au+Au, pp, and d+Au. This could be explained by different physics mechanisms such as: large angle gluon radiation, deflected jets, Ĉerenkov gluon radiation, and conical flow generated by hydrodynamic shock-waves. We can discriminate the scenarios wit...

Journal: :Nanotechnology 2011
Alexey Nikolaev Maria E Gracheva

We study the effects of different nanopore geometries (double-conical, single-conical, cylindrical) on the electrostatic potential distribution and ionic conductivity in a double-layered semiconductor nanopore device as functions of the applied membrane bias. Ionic current-voltage characteristics as well as their rectification ratios are calculated using a simple ion transport model. Based on o...

2005
W. A. Moura - Melo A. R. Pereira L. A. S. Mól

We study magnetic vortex-like excitations lying on the surface of a circular cone. Its energy appears to be linearly dependent on the conical apperture parameter, besides of being logarithmically divergent with sample size. In addition, we realize a geometrical-like pinning of the vortex, say, it is energetically favourable for it to nucleate around conical apex. Similar effect is also obtained...

2009
Evandro Afonso Sartori Josué Ricardo Broilo Luiz Oscar Honorato Mariano Leandro Luis Corso Rogério José Marczak Rosemary Sadami Shinkai

This 3D finite element study assessed the stress distribution in mandibular overdenture supported by the 3i Locator system attached to two cylindrical or conical implants placed at the canine region. A 100 N vertical load was applied over the right first molar of the two overdenture models. The von Mises stresses were concentrated at the cervical and middle implant thirds. Cylindrical implants ...

Journal: :Bio-medical materials and engineering 2015
Nadzeri Omar Yongmin Zhong Reza N Jazar Aleksandar Subic Julian Smith Bijan Shirinzadeh

This paper presents a new method for real-time modelling soft tissue deformation. It improves the traditional mass-spring model with conical springs to deal with nonlinear mechanical behaviours of soft tissues. A conical spring model is developed to predict soft tissue deformation with reference to deformation patterns. The model parameters are formulated according to tissue deformation pattern...

Journal: :The Journal of chemical physics 2013
Vladimir S Petrovic Sebastian Schorb Jaehee Kim James White James P Cryan J Michael Glownia Lucas Zipp Douglas Broege Shungo Miyabe Hongli Tao Todd Martinez Philip H Bucksbaum

Nonradiative energy dissipation in electronically excited polyatomic molecules proceeds through conical intersections, loci of degeneracy between electronic states. We observe a marked enhancement of laser-induced double ionization in the vicinity of a conical intersection during a non-radiative transition. We measured double ionization by detecting the kinetic energy of ions released by laser-...

2011
M. N. Noui-Mehidi

The present work is concerned with a numerical study of the performance of a conical annular centrifugal contractor through the analysis of the flow properties when the apex angle is changed for different imposed axial flows. The calculations revealed the advantage of using conical annular centrifugal contractors compared to the cylindrical annular centrifuges. The study is conducted by a compa...

Journal: :Journal of Mathematical Physics 2005

Journal: :Discrete & Computational Geometry 2016
Daniel Hug Rolf Schneider

We consider tessellations of the Euclidean (d− 1)-sphere by (d− 2)-dimensional great subspheres or, equivalently, tessellations of Euclidean d-space by hyperplanes through the origin; these we call conical tessellations. For random polyhedral cones defined as typical cones in a conical tessellation by random hyperplanes, and for their dual cones, we study expectations of certain geometric funct...

Journal: :Journal of spinal disorders 2001
A Ono M D Brown L L Latta E L Milne D C Holmes

To compare the mechanical effectiveness of a new conical screw design with a conventional cylindrical screw design, the screw insertion time, torque, and pull-out strength of single-pedicle screw and triangulated-pedicle screw constructs of each type of screw were compared in human cadaveric vertebral bodies. The time required to insert the conical screws was less than that required for cylindr...

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