نتایج جستجو برای: cluster diameter

تعداد نتایج: 312063  

1996
David Spergel

The string-dominated universe locally resembles an open universe, and fits dynamical measures of power spectra, cluster abundances, redshift distortions, lensing constraints, luminosity and angular diameter distance relations and microwave background observations. We show examples of networks which might give rise to recent string-domination without requiring any fine-tuned parameters. We discu...

2005
J. B. Jones M. D. Gregg Q. A. Parker

We have discovered nine ultra-compact dwarf galaxies (UCDs) in the Virgo Cluster, extending samples of these objects outside the Fornax Cluster. Using the 2dF multi-fiber spectrograph on the Anglo-Australian Telescope, the new Virgo members were found among 1500 color-selected, star-like targets with 16.0 < bj < 20.2 in a two-degree diameter field centered on M87 (NGC4486). Institute for Geophy...

2000
S. van Dongen Stijn van Dongen

In [6] a cluster algorithm for graphs was introduced called the Markov cluster algorithm or MCL algorithm. The algorithm is based on simulation of (stochastic) ow in graphs by means of alternation of two operators, expansion and in ation. The results in [8] establish an intrinsic relationship between the corresponding algebraic process (MCL process) and cluster structure in the iterands and the...

2014
Rajan K. Chakrabarty Nicholas D. Beres Hans Moosmüller Swarup China Claudio Mazzoleni Manvendra K. Dubey Li Liu Michael I. Mishchenko

Wildfires contribute significantly to global soot emissions, yet their aerosol formation mechanisms and resulting particle properties are poorly understood and parameterized in climate models. The conventional view holds that soot is formed via the cluster-dilute aggregation mechanism in wildfires and emitted as aggregates with fractal dimension Df ≈ 1.8 mobility diameter Dm ≤ 1 μm, and aerodyn...

Journal: :Circulation. Cardiovascular imaging 2013
Meryl S Cohen Anusha Jegatheeswaran Jeanne M Baffa David B Gremmels David M Overman Christopher A Caldarone Brian W McCrindle Luc Mertens

BACKGROUND Definition and management of right dominant unbalanced atrioventricular septal defect (AVSD) remains challenging because unbalance entails a spectrum of left heart hypoplasia. Previous work has highlighted atrioventricular valve (AVV) index as a reasonable defining echocardiographic measure. We sought to assess which additional echocardiographic features might provide further charact...

2017
J. Zhang D. Repetto Jan Honolka Axel Enders Klaus Kern

The growth and magnetism of nanometer size Fe clusters on stepped Pt surfaces is investigated by scanning tunneling microscopy (STM) and magneto-optical Kerr effect measurements (MOKE). The clusters are formed on xenon buffer layers of varying thickness and then brought into contact with the substrate by thermal desorption of the Xe. The cluster size is controlled by the thickness of the Xe lay...

Journal: :Nanotechnology 2011
G Torricelli A Akraiam K von Haeften

Silicon clusters were produced by gas aggregation in vacuum and co-deposited with water vapour onto a cold target where the water vapour froze. Melting of the ice yielded fluorescent silicon nanoparticles suspended in water which were investigated by photoluminescence spectroscopy (PL) and atomic force microscopy (AFM). The PL spectrum showed a prominent band at 420 nm and other, less intense b...

2009
Junichiro Shiomi Shigeo Maruyama

Single-walled carbon nanotubes (SWNTs) have caught much attention as materials realizing various low-dimensional transport properties with their quasi-one-dimensional structures. The confined dynamics gives rise to unique heat and mass transport that are beneficial for applications. The current study highlights the confined dynamics by means of classical molecular dynamics (MD) simulations. The...

Journal: :International journal of advanced biochemistry research 2023

An effective selection of parents for hybridization requires a plant breeder to consider the genetic variety available germplasm, hence research on diversity were carried out with 20 genotypes chilli (Capsicum annuum L.) at Crop Research Institute.Center-1, School Agriculture, ITM University, Gwalior (Madhya Pradesh), during Rubi season 2022-23. The D2 Twenty examined divergence using statistic...

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