نتایج جستجو برای: conical and normal conical forms

تعداد نتایج: 16882824  

2017
Huibo Ren Xie Dang Xianzhi Cai Peihang Yu Yajun Li Shanshan Zhang Menghong Liu Binqing Chen Deshu Lin

The physiological functions of epidermal cells are largely determined by their diverse morphologies. Most flowering plants have special conical-shaped petal epidermal cells that are thought to influence light capture and reflectance, and provide pollinator grips, but the molecular mechanisms controlling conical cell shape remain largely unknown. Here, we developed a live-confocal imaging approa...

2001
Hakan Ferhatosmanoglu Divyakant Agrawal Amr El Abbadi

Conical queries are a novel type of query with an increasing number of applications. Traditional index structures and retrieval mechanisms, in general, have been optimized for rectangular and circular queries, rather than conical queries. In this paper, we focus on conical queries which can be deened as a multi-dimensional cone in a multi-dimensional data space. We develop a model for expressin...

Journal: :Applied optics 1995
V I Sapritsky A V Prokhorov

An algorithm based on the Monte Carlo method is described that permits the precise calculation of radiant emission characteristics of nonisothermal blackbody cavities for use as standard sources in radiometry, photometry, and radiation thermometry. The algorithm is realized for convex axisymmetric specular-diffuse cavities formed by three conical surfaces. The numerical experiments provide esti...

Journal: :Physical review letters 2006
A K Chaudhuri Ulrich Heinz

We study the effects of jet quenching on the hydrodynamical evolution of the quark-gluon plasma (QGP) fluid created in a heavy-ion collision. In jet quenching, a hard QCD parton, before fragmenting into a jet of hadrons, deposits a fraction of its energy in the medium, leading to suppressed production of high-pT hadrons. Assuming that the deposited energy quickly thermalizes, we simulate the su...

Journal: :هنرهای تجسمی 0
ابوالقاسم دادور دنشگاه الزهرا، دکترا نصرت الملوک مصباح اردکانی دانشگاه تربیت مدرس، دانشجوی دکترای پژوهش هنر

the researches have made different explanations about rhytons, but they mostly accepted that “rhyton is a kind of a drinking vessel often in the form of an animal, having two holes for pouring water.” rhytons were used in iran from forth millennium b.c. to the end of sasanian period. the animals that are used are of two different kinds: imaginary animals or the real animals. diversity of the sh...

Journal: :Chemical Society reviews 2003
Brian E Applegate Timothy A Barckholtz Terry A Miller

Much recent progress has been made theoretically and computationally towards understanding the importance of conical intersections for chemical reactions. Nonetheless, experimental characterization of conical intersections has proven extremely difficult with one striking exception: the Jahn-Teller conical intersection. This article overviews the fundamental similarity of a variety of conical in...

Journal: :Physical chemistry chemical physics : PCCP 2011
Donald G Truhlar C Alden Mead

A recent paper in this journal proposed the conversion of conical intersections to avoided crossings by lowering the symmetry with an optical field. The article also claimed that the characters of nonadiabatic transitions caused by avoided crossings and conical intersections are qualitatively different. The present comment shows that this proposal and this claim result from an incorrect appreci...

Amin Reza Noghrehabadi Ebrahim Hajidavaloo Farshad Torabi, Mojtaba Moravej Moravej

The geometry of a collector is one of the important factors that can increase the incident radiation on the collector surface. In the present study, the incident radiation for a stationary collector with cone geometry, i.e. a conical collector, is theoretically and experimentally investigated. This type of collector is always stable and does not need a fixture to install. Moreover, it has a...

2017
Jae Hoon Lee Ki Hyuk Park

PURPOSE Cone shape neck is regarded as non-instruction for use (IFU) in most commercial stent graft. However, in real practice, liberal application of endovascular aneurysm repair (EVAR) for outside of IFU happens. We investigate non-adherence to conical neck anatomy in terms of early aneurysmal exclusion results. MATERIALS AND METHODS From January 2010 to December 2013, 105 patients with abd...

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