نتایج جستجو برای: patches and matrix

تعداد نتایج: 16872335  

2016
Louiza Moussaoui Nicole J. Fenton Alain Leduc Yves Bergeron Brian J. Palik

Variable retention harvest promotes biodiversity conservation in managed boreal forests by ensuring forest continuity and structural complexity. However, do post-harvest and post-fire patches maintain the same structural complexity? This study compares post-harvest and post-fire residual patches and proposes retention modalities that can maintain the same structural complexity as in natural for...

Journal: :Journal of cell science 1989
M W Rochlin H B Peng

Electric fields cause acetylcholine receptor (AChR) patches to form on the cathodal sides of cultured muscle cells. These patches are stable for several hours following cessation of an electric field treatment, indicating that the receptors are anchored to the cluster sites. Furthermore, at the ultrastructural level, AChR patches induced by electric fields are marked by an accumulation of extra...

2002
Antonio Robles-Kelly Edwin. R. Hancock

In this paper we describe a graph-spectral method for 3D surface segmentation from 2D imagery. The method locates patches by finding groups of pixels that can be connected using a curvature minimising path. The path is the steady state Markov chain on transition probability matrix. We provide two methods for computing this matrix. The first uses information provided by the field of surface norm...

Journal: :iranian journal of neonatology 0
mojgan bayatmokhtari - department of pediatrics, mashhad branch , islamic azad university, mashhad, iran gholamali maamouri neonatal research center, ghaem hospital, mashhad university of medical sciences, mashhad, iran. jamshid yousefi department of pediatrics, mashhad branch , islamic azad university, mashhad, iran mojtaba meshkat department of biostatistics, mashhad branch, islamic azad university, mashhad, iran mohammad hoseyni nia mashhad branch, islamic azad university, mashhad, iran

objective conjunctivitis is a common disease in neonates. several bacterial and viral infectious agents may cause it. tear circulation and blinking has protective effects from bacterial colonization in the conjuntival sac. reduced blinking increases the possibility of bacterial conjunctivitis. we studied the effect of eye patches on bacterial colonization of the conjunctival sac.  methods in 10...

Habitat analysis using landscape metrics can be efficient in better management of habitat. As a critically endangered subspecies, the Baluchistan black bear is scattered in the Bahr Asman and Zaryab areas in Kerman province. The purpose of this study was to model the distribution of the sub-species and evaluate the quality of its habitat patches, using landscape metrics. Distribution modeling w...

Journal: :Journal of the Society of Materials Science, Japan 1965

بشری, حسین, جعفری, رضا, جعفری, فاطمه,

Rangeland condition assessment plays an important role in determining range health and applying appropriate management programs. This study aimed to evaluate the structure and function of a semi-steppe rangeland using Landscape Function Analysis technique (LFA) in different land conditions in western Isfahan province, Iran. For this purpose, 4, 3 and 7 sites in different rangeland condition cla...

خلیل‌آبادی, سمیه, سفیانیان, علیرضا, متین‌خواه, سیدحمید, همامی, محمودرضا, کابلی, محمد,

  Determining landscape parameters influencing species richness of habitat patches is one of the most important issues in conservation biology. Many previous studies have investigated the influence of habitat parameters on bird assemblages in forest patches, but studies seeking effects of oasis parameters on bird assemblages are very scarce. Karkas Protected Area is located in semi-arid zone in...

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 1987
C R Gerfen K G Baimbridge J Thibault

In the previous paper (Gerfen et al., 1987) mesostriatal dopaminergic neurons were shown to be subdivided into dorsal and ventral tiers that project to the striatal matrix and patch compartments, respectively. The present study provides experimental evidence that these patch-matrix mesostriatal dopaminergic systems are biochemically and developmentally distinct. A 28 kDa calcium-binding protein...

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