نتایج جستجو برای: neighbourhood corona

تعداد نتایج: 24326  

2008
M. SUN

A deep Chandra observation of NGC 1265 (3C 83.1B), the prototype for the narrow-angled-tailed (NAT) radio galaxy, reveals a small cool X-ray thermal corona (∼ 0.6 keV) embedded in the hot ICM of the Perseus cluster (∼ 6.7 keV). The corona is asymmetric with a sharp edge (∼2.2, or 0.8 kpc from the nucleus) to the south and an extension to the north (at least ∼ 8 from the nucleus), which is inter...

2012
Jaana I. Halonen Mika Kivimäki Jaana Pentti Ichiro Kawachi Marianna Virtanen Pekka Martikainen S. V. Subramanian Jussi Vahtera

BACKGROUND The extent to which neighbourhood characteristics explain accumulation of health behaviours is poorly understood. We examined whether neighbourhood disadvantage was associated with co-occurrence of behaviour-related risk factors, and how much of the neighbourhood differences in the co-occurrence can be explained by individual and neighbourhood level covariates. METHODS The study po...

Journal: :Health & place 2011
Catharine R Gale Elaine M Dennison Cyrus Cooper Avan Aihie Sayer

Little is known about the potential effects of neighbourhood environment on positive mental health in older people. We examined cross-sectional associations between the index of multiple deprivation score of the census area of residence, perceptions of neighbourhood cohesion and neighbourhood problems and mental wellbeing, as measured by the Warwick-Edinburgh Mental Wellbeing Scale, in 1157 men...

1993
Xin Yao

Neighbourhood structure and size are important parameters in local search algorithms. This is also true for generalised local search algorithms like simulated annealing. It has been shown that the performance of simulated annealing can be improved by adopting a suitable neighbourhood size. However, previous studies usually assumed that the neighbourhood size was xed during search. This paper pr...

Journal: :Human reproduction 2012
Xian-Hong Tong Li-Min Wu Ren-Tao Jin Li-Hua Luo Hong-Bing Luan Yu-Sheng Liu

BACKGROUND Before human MII oocytes are vitrified they are usually denuded from their cumulus cells. In this study we wanted to investigate the effects of an intact corona radiata on the vitrification and fertilization of human oocytes. METHODS The study comprised two different parts. In Part 1, 36 MII stage oocytes, from 6 patients, were randomly assigned into a control group, a group of vit...

Journal: :Journal of neuroscience methods 2006
Silke D Meier Yury Kovalchuk Christine R Rose

Neuronal activity causes substantial Na+ transients in fine cellular processes such as dendrites and spines. The physiological consequences of such Na+ transients are still largely unknown. High-resolution Na+ imaging is pivotal to study these questions, and, up to now, two-photon imaging with the fluorescent Na+ indicator sodium-binding benzofuran isophthalate (SBFI) has been the primary metho...

Journal: :Nanoscale research letters 2016
Wenming Yang Rong Zhu Xianli Zong

Minimizing the voltage of corona discharges, especially when using nanomaterials, has been of great interest in the past decade or so. In this paper, we report a new corona discharge device by using ZnO nanowires operated in atmospheric air to realize continuous corona discharge excited by hundreds of volts. ZnO nanowires were synthesized on microelectrodes using electric-field-assisted wet che...

2000
A. Merloni A. C. Fabian

Most astrophysical sources powered by accretion onto a black hole, either of stellar mass or supermassive, when observed with hard X-rays show signs of a hot Comptonizing component in the flow, the so-called corona, with observed temperatures and optical depths lying in a narrow range (0.1τ1 and 1×109KT 3×109 K). Here we argue that these facts constitute strong supporting evidence for a magneti...

2010
Daniele Dell'Orco Martin Lundqvist Cecilia Oslakovic Tommy Cedervall Sara Linse

BACKGROUND Nanoparticles in contact with biological fluids interact with proteins and other biomolecules, thus forming a dynamic corona whose composition varies over time due to continuous protein association and dissociation events. Eventually equilibrium is reached, at which point the continued exchange will not affect the composition of the corona. RESULTS We developed a simple and effecti...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2009
Andrew W Baggaley Carlo F Barenghi Anvar Shukurov Kandaswamy Subramanian

We develop a model of the fluctuation dynamo in which the magnetic field is confined to thin flux ropes advected by a multiscale model of turbulence. Magnetic dissipation occurs only via reconnection of the flux ropes. This model can be viewed as an implementation of the asymptotic limit R_{m}-->infinity for a continuous magnetic field, where magnetic dissipation is strongly localized to small ...

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