نتایج جستجو برای: sna

تعداد نتایج: 1729  

2001
Debbie Richards

This project was motivated by the need to meaningfully display large amounts of Social Network Analysis (SNA) data from an exploratory case study into the existence of technological convergence in Australia. We found that many tools used for the display of SNA data did not handle large datasets well due to the denseness of information, a typical problem in the display of large graphs. The appro...

Journal: :Neuron 2006
Carlos Gonzalez-Islas Peter Wenner

Spontaneous network activity (SNA) has been described in most developing circuits, including the spinal cord, retina, and hippocampus. Despite the widespread nature of this developmental phenomenon, its role in network maturation is poorly understood. We reduced SNA in the intact embryo and found compensatory increases in synaptic strength of spinal motoneuron inputs. AMPAergic miniature postsy...

Journal: :American journal of physiology. Regulatory, integrative and comparative physiology 2004
Toru Kawada Tadayoshi Miyamoto Kazunori Uemura Koji Kashihara Atsunori Kamiya Masaru Sugimachi Kenji Sunagawa

Neuronal uptake is the most important mechanism by which norepinephrine (NE) is removed from the synaptic clefts at sympathetic nerve terminals. We examined the effects of neuronal NE uptake blockade on the dynamic sympathetic regulation of the arterial baroreflex because dynamic characteristics are important for understanding the system behavior in response to exogenous disturbance. We perturb...

2014
Elise Mercier Iain R Peters Frédéric Farnir Rachel Lavoué Michael Day Cécile Clercx Dominique Peeters

BACKGROUND The exact aetiology of canine sino-nasal aspergillosis (SNA) is unknown. In man, dysfunction in innate immunity, particularly in the function of pattern recognition receptors, is implicated in the pathogenesis of inflammatory sino-nasal disease and in fungal diseases. Associations between single nucleotide polymorphisms (SNPs) in Toll-like receptors (TLRs) and these diseases have bee...

1999
DON E. BURGESS TABITHA A. ZIMMERMAN MARSHALL T. WISE SHENG-GANG LI DAVID C. RANDALL DAVID R. BROWN Tabitha A. Zimmerman Marshall T. Wise Sheng-Gang Li David C. Randall

Burgess, Don E., Tabitha A. Zimmerman, Marshall T. Wise, Sheng-Gang Li, David C. Randall, and David R. Brown. Low-frequency renal sympathetic nerve activity, arterial BP, stationary ‘‘1/f noise,’’ and the baroreflex. Am. J. Physiol. 277 (Regulatory Integrative Comp. Physiol. 46): R894–R903, 1999.—The object of this study is to quantify the very low frequency (i.e., ,0.1 Hz) interactions between...

2017
Mirelle Inácio Soares Zélia Marilda Rodrigues Resck Fábio de Souza Terra Silvia Helena Henriques Camelo

Objective: To analyze the advantages and challenges of nurses in instrumental assistance management by Systematization of Nursing Assistance (SNA). Methods: This is a qualitative study, based on the framework of dialectical hermeneutics. The sample consisted of 32 nurses from three hospitals in a city in southern Minas Gerais. We used the Focus Group with the guiding question: "What are the fac...

Journal: :Neuroscience letters 2012
Yuko Horii Jiao Shen Yoshiyuki Fujisaki Kokichi Yoshida Katsuya Nagai

l-Carnosine (β-alanyl-l-histidine), a dipeptide of the amino acids β-alanine and histidine, is found in mammalian tissues including those in the central nervous system and in skeletal muscles. In the present study, we examined the effects of intraduodenal (ID) injection of l-carnosine on splenic sympathetic nerve activity (splenic-SNA) in urethane-anesthetized rats and found that ID injection o...

2011
Bárbara Pompeu Christovam

Resumen It’s about a qualitative study, a single case study type, where was adopted a triangulation of techniques in order to obtain data collection (structured questionnaire, systematic observation and documental analysis) and content analysis according to Bardin for analysis. The objective was to determine whether the nurses of the infectious diseases of a university hospital consider the Sys...

Journal: :American journal of hypertension 1997
M Nishimura H Takahashi A Nanbu M Sakamoto M Yoshimura

The effect of brain L-arginine on arterial pressure was investigated by injecting L- or D-arginine into the cerebral ventricles of male Wistar rats that were anesthetized with urethane. Intracerebroventricular (I.C.V.) injection of 1 micromol L-arginine reduced the arterial pressure and the abdominal sympathetic nervous activity (SNA), whereas the injection of 10 micromol L-arginine induced a t...

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