نتایج جستجو برای: spherical cap or a hemisphere

تعداد نتایج: 13796117  

2009
E. Gardin C. Quantin

Introduction: Uncommon features have been observed in the cryptic region near the south polar cap during the spring time retreat of the seasonal cap. The defrosting of the seasonal CO2 cap leads to dalmatian spots named dark spots [1], spiders [2], fans [3] and polygonal crack patterns [4]. (Kieffer, 2007) proposed a semiquantitative model to explain all these processes. The dark spots, fans an...

Journal: :Optics 2022

In many optical engineering applications, a spherical cap shaped element is widely used such as concave or convex mirrors in reflective optics. Such an can also tilt around the vertex which corresponds to off-axis design. The backscattering of sometimes could be important. For example, space-based gravitational wave detection, superimposed with local oscillator and limits sensitivity spacecraft...

Journal: :Chemistry 2015
Stanislav V Sokolov Christopher Batchelor-McAuley Kristina Tschulik Stephen Fletcher Richard G Compton

The geometry of quasi-spherical nanoparticles is investigated. The combination of SEM imaging and electrochemical nano-impact experiments is demonstrated to allow sizing and characterization of the geometry of single silver nanoparticles.

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید مدنی آذربایجان - دانشکده ادبیات و زبانهای خارجی 1389

according to coates’s (2004, as cited in zhang, 2010) definition of "conversational dominance" (p.111), it refers to the phenomenon of a speaker dominating others in interaction. specifically, it means how a speaker makes use of certain strategies to get the floor and maintain the floor. thus, the amount of talk is the main measurement for the dominance of the conversation. whether a speaker do...

Journal: :Investigative ophthalmology & visual science 2018
Iben Bach Damgaard Anders Ivarsen Jesper Hjortdal

Purpose To examine the refractive correction and corneal biomechanical strength after small incision lenticule extraction (SMILE) by using a 110- or 160-μm cap thickness. Methods Thirty-two human donor corneas were allocated into 4 groups, combining one of two cap thicknesses (110 and 160 μm) with one of two spherical corrections (-4 D and -8 D). Each cornea was mounted on an artificial anter...

Gerstmann’s syndrome is caused by a left (dominant) inferior parietal lesion, particularly involving the angular gyrus or subjacent white matter of the left hemisphere. We describe case of an 80 year old right handed man admitted to our hospital with history of sudden onset of blurred vision. At first in neurological examination, he had left hemonymus hemianopia and characteristic features of G...

Antoine AF de Vries Jim Swildens Naghmeh Ahmadiankia Vajiheh Neshati Zeinab Neshati

  Objective(s): Adeno-associated virus type 2 (AAV2) vectors are widely used for both experimental and clinical gene therapy. A recent research has shown that the performance of these vectors can be greatly improved by substitution of specific surface-exposed tyrosine residues with phenylalanines. In this study, a fast and simple method is presented to generate AAV2 vector helper plasmids encod...

2007
S. G. Shepherd J. M. Ruohoniemi

The recent addition of two radars to the existing network of six Super Dual Auroral Radar Network (SuperDARN) HF radars in the Northern Hemisphere has significantly extended the area in the high latitude where measurements of convecting ionospheric plasma are made. We show that the distribution of the electrostatic potential ß associated with the "E x B" drift of ionospheric plasma can be relia...

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