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Mostrando ítems 33201-33210 de 105897
Organophosphorus-induced delayed neuropathy: A simple and efficient therapeutic strategy
(Elsevier B.V., 2010-02-01)
Organophosphorus (OP) used as pesticides and hydraulic fluids can produce acute poisoning known as OP-induced delayed neuropathy (OPIDN), whose effects take long time to recover. Thus a secure therapeutic strategy to prevent ...
Cocaine induces cell death and activates the transcription nuclear factor kappa-b in pc12 cells
(Biomed Central Ltd., 2009-01-01)
Cocaine is a worldwide used drug and its abuse is associated with physical, psychiatric and social problems. The mechanism by which cocaine causes neurological damage is very complex and involves several neurotransmitter ...
Generalization of the Y-differential autotransformer for 12- and 18-pulse converters
(Elsevier B.V., 2006-03-01)
This work proposes a methodology to generalize the Y-connections for 12- and 18-pulse autotransformers. A single mathematical expression, obtained through simple trigonometric operations, represents all the connections. ...
System identification and active vibration control of a flexible structure
(Abcm Brazilian Soc Mechanical Sciences & Engineering, 2012-01-01)
The aim of this paper is to illustrate the active control of vibration of a flexible structure using a model-based digital controller. The state-space model of the system is derived using a system identification technique ...
Stability analysis of power systems described with detailed models by automatic method
(Elsevier B.V., 2009-05-01)
The power system stability analysis is approached taking into explicit account the dynamic performance of generators internal voltages and control devices. The proposed method is not a direct method in the usual sense since ...
Genotoxicity, cytotoxicity and gene expression in patients undergoing elective surgery under isoflurane anaesthesia
(Oxford University Press, 2011-05-01)
There are numerous studies reporting on the effects of inhalation anaesthesia in cells of exposed individuals but not much is known about the ability of isoflurane (ISF) to induce oxidative DNA damage. However, surgery is ...
Hábitos, rupturas e novas possibilidades de compartilhamento de informação e de conhecimento
(Universidade Federal da Paraíba (UFPB), 2010-01-01)
The structure of the worlds we know is built on habits and is conditioned by fixed beliefs through which we filter and conform a circumscribed universe. This building process makes it essential to understand the paths of ...
5-HT1B receptor in the suprachiasmatic nucleus of the common marmoset (Callithrix jacchus)
(Elsevier B.V., 2011-01-13)
Serotonin (5-HT) is involved in the fine adjustments at several brain centers including the core of the mammal circadian timing system (CTS) and the hypothalamic suprachiasmatic nucleus (SCN). The SCN receives massive ...
Effects of Helicobacter pylori Infection on the Expressions of Bax and Bcl-2 in Patients with Chronic Gastritis and Gastric Cancer
(Springer, 2010-01-01)
The aim of the present study is to evaluate the influence of Helicobacter pylori on Bax and Bcl-2 mRNA and protein levels in patients with chronic gastritis and gastric cancer. The study included 217 patients, of which 26 ...