نتایج جستجو برای: growth ring

تعداد نتایج: 935676  

Journal: :Journal of clinical microbiology 2013
Batriti S Wallang Sujata Das Savitri Sharma Srikant K Sahu Ruchi Mittal

Smear and culture tests of corneal scrapings from a patient with a ring infiltrate confirmed significant growth of a Staphylococcus species resistant to fluoroquinolones. Because of nonresponse to medical management, the patient underwent therapeutic penetrating keratoplasty. Staphylococcal infection of the cornea may appear as a ring-like infiltrate that is recalcitrant to medical management.

In the combination of 5-fluorophenyl-1, 3, 7, 9-tetra methyl pyrido [2, 3, d, d, 5, 6 di pyrimidine -2, 4, 6, and 8 tetron, there are 4 rings, respectively, ring that is attached to the halogen ring A and, respectively, a ring The lower and the right to the left of the ring A are called C, B, and D. Calculations and studies show that the amount of aromatics in halogen-ring A in all cases has th...

Journal: :Forests 2021

Himalayan Silver Fir (Abies spectabilis) and Birch (Betula utilis) are tree species often found coexisting in sub-alpine forests of the Nepal Himalayas. To assess species-specific growth performances these species, tree-ring samples were collected from subalpine forest Dhorpatan Hunting Reserve, Nepal. Standard ring width chronologies both correlated with climatic variables static running windo...

Journal: :Physical review letters 1996
Kiang Goddard

We propose, based on recent experimental results, a polyyne ring nucleus (PRN) growth model for the synthesis of single-layer nanotubes (SLN’s). The PRN model assumes that (i) the critical nuclei are the planar carbon polyyne rings that are observed to be most stable for sizes in the range C 10 to C40; (ii) ComC n clusters (possibly charged) play the role of a catalyst by serving to add C 2 or ...

2007
F. Zhou J. Amann S. Seletskiy A. Seryi C. M. Spencer M. D. Woodley

Significant beam intensity-dependence of the vertical emittance growth was experimentally observed at the Accelerator Test Facility (ATF) at KEK extraction beamline. This paper presents the simulations of possible vertical emittance growth sources, particularly in the extraction channel, where the magnets are shared by both the ATF extraction beamline and its damping ring. The vertical emittanc...

2006
Henn Pärn

The climate–growth relationships and the variation of the radial growth of Oxalis– Myrtillus-site type Norway spruce and Scots pine stands in conditions of different cement dust loads were investigated. The climate–growth relationships were studied during the period from 1946 to 2004. The variation of the mean tree-ring width was studied during three time periods, from 1941 to 1965, from 1966 t...

Journal: :Cancer research 2005
Angelika M Burger Yuguang Gao Yutaka Amemiya Harriette J Kahn Richard Kitching Yili Yang Ping Sun Steven A Narod Wedad M Hanna Arun K Seth

The RING finger family of proteins possess ubiquitin ligase activity and play pivotal roles in protein degradation and receptor-mediated endocytosis. In this study, we examined whether the breast cancer-associated gene 2 (BCA2), a novel RING domain protein, has E3 ubiquitin ligase activity and investigated its expression status in breast tumors. The full-length BCA2 gene was cloned from the hum...

2011
Marco Carrer

The development of dendrochronological time series in order to analyze climate-growth relationships usually involves first a rigorous selection of trees and then the computation of the mean tree-growth measurement series. This study suggests a change in the perspective, passing from an analysis of climate-growth relationships that typically focuses on the mean response of a species to investiga...

1996
Vincent Rodin Hervé Troadec Hélène de Pontual Abdessalam Benzinou Jacques Tisseau Jean Le Bihan

In this paper we present an algorithm for the detection of fish otolith growth rings based on a graph construction method. The identification of growth rings, for age estimation, is routinely achieved in fishery laboratories by human readers. One of the major problem encountered during an automatic image processing is the lack of ring continuity perception. We present an approach to this contin...

Journal: :Annual review of biochemistry 2007
Joe Lutkenhaus

The positioning of a cytoskeletal element that dictates the division plane is a fundamental problem in biology. The assembly and positioning of this cytoskeletal element has to be coordinated with DNA segregation and cell growth to ensure that equal-sized progeny cells are produced, each with a copy of the chromosome. In most prokaryotes, cytokinesis involves positioning a Z ring assembled from...

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