نتایج جستجو برای: nsc ratio

تعداد نتایج: 504533  

Journal: :Annals of forest science 2022

Abstract Key message At the sixth and seventh years of a drought event in south Chile, non-structural carbohydrate (NSC) concentrations were similar between healthy unhealthy trees Araucaria araucana (Molina) K. Koch, growth did not decrease, suggesting that leaf loss prevented C shortage trees. Context Tree resistance resilience may be impaired by decreasing carbohydrates (NSC). During 7-year ...

2015
Or Sperling J. Mason Earles Francesca Secchi Jessie Godfrey Maciej A. Zwieniecki Lucas C.R. Silva

Cellular respiration depletes stored carbohydrates during extended periods of limited photosynthesis, e.g. winter dormancy or drought. As respiration rate is largely a function of temperature, the thermal conditions during such periods may affect non-structural carbohydrate (NSC) availability and, ultimately, recovery. Here, we surveyed stem responses to temperature changes in 15 woody species....

2017
Marcelo Boareto Dagmar Iber Verdon Taylor

During embryonic and adult neurogenesis, neural stem cells (NSCs) generate the correct number and types of neurons in a temporospatial fashion. Control of NSC activity and fate is crucial for brain formation and homeostasis. Neurogenesis in the embryonic and adult brain differ considerably, but Notch signaling and inhibitor of DNA-binding (ID) factors are pivotal in both. Notch and ID factors r...

2008
Júlio C.T. Silva Rosângela D.L. Oliveira Gulab N. Jham

The effect produced by neem seed extracts and a neem seed concentrate (NSC) on the mortality and development of Heterodera glycines was evaluated. Second-stage juvenile (J2) mortality produced by the extracts and NSC was determined. Soybean seedlings treated with each of the extracts (aqueous, methanolic and hexane) were inoculated with J2 and the number of females and eggs per root system dete...

Journal: :Genes & development 2010
Da Yong Lee Tu-Hsueh Yeh Ryan J Emnett Crystal R White David H Gutmann

Recent studies have shown that neuroglial progenitor/stem cells (NSCs) from different brain regions exhibit varying capacities for self-renewal and differentiation. In this study, we used neurofibromatosis-1 (NF1) as a model system to elucidate a novel molecular mechanism underlying brain region-specific NSC functional heterogeneity. We demonstrate that Nf1 loss leads to increased NSC prolifera...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2000
E D Laywell P Rakic V G Kukekov E C Holland D A Steindler

The mammalian brain contains a population of neural stem cells (NSC) that can both self-renew and generate progeny along the three lineage pathways of the central nervous system (CNS), but the in vivo identification and localization of NSC in the postnatal CNS has proved elusive. Recently, separate studies have implicated ciliated ependymal (CE) cells, and special subependymal zone (SEZ) astroc...

Journal: :Molecular medicine 2008
Daniele Bottai Laura Madaschi Anna M Di Giulio Alfredo Gorio

The aim of the study was the assessment of the effects of adult neural stem cell (NSC) transplantation in a mouse model of spinal cord injury (SCI). The contusion injury was performed by means of the Infinite Horizon Device to allow the generation of reproducible traumatic lesion to the cord. We administered green fluorescent-labeled (GFP-)NSCs either by intravenous (i.v.) injection or by direc...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2011
Monika Aggarwal Joshua A Sommers Robert H Shoemaker Robert M Brosh

Modulation of DNA repair proteins by small molecules has attracted great interest. An in vitro helicase activity screen was used to identify molecules that modulate DNA unwinding by Werner syndrome helicase (WRN), mutated in the premature aging disorder Werner syndrome. A small molecule from the National Cancer Institute Diversity Set designated NSC 19630 [1-(propoxymethyl)-maleimide] was ident...

2014
Juemin Yang Fang Han Rafael A. Irizarry Han Liu

Abstract Recent genomic studies have identified genes related to specific phenotypes. In addition to marginal association analysis for individual genes, analyzing gene pathways (functionally related sets of genes) may yield additional valuable insights. We have devised an approach to phenotype classification from gene expression profiling. Our method named “group Nearest Shrunken Centroids (gNS...

Journal: :IEEE Trans. Computers 1989
Ian Parberry

Nondeterministic analogues of the well-known classes NC and SC, d d NNC and NSC, respectively, are investigated. Adding nondeterminism to SC leaves it in the domain of parallel computation since NSC E POLYLOGSPACE. That is, NSC is a subset of the class of languages computable by fast parallel computers. Adding noodeterminism to NC appears to make it much more powerful since NNC = NP. It is clea...

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