Cold Shock
Mostrando 1-12 de 261 artigos, teses e dissertações.
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1. CspB of an arctic bacterium, Polaribacter irgensii KOPRI 22228, confers extraordinary freeze-tolerance
ABSTRACT Freezing temperatures are a major challenge for life at the poles. Decreased membrane fluidity, uninvited secondary structure formation in nucleic acids, and protein cold-denaturation all occur at cold temperatures. Organisms adapted to polar regions possess distinct mechanisms that enable them to survive in extremely cold environments. Among the co
Braz. J. Microbiol.. Publicado em: 2018-03
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2. Dynamic Properties of Coupled Tube-Array Structures with the Axial Loads
Abstract The tube-array structures coupled both with the fluid and the axial load is focused. In a heat exchanger, the tubes are frequently affected by cold and hot fluid shock waves. Thus, tubes are often found to be vibrated and even to be worn out. This vibration may not only alter the performance of the tubes but also introduce the damage in the heat exc
Lat. Am. j. solids struct.. Publicado em: 2016-12
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3. Interaction of an opportunistic fungus Purpureocillium lilacinum with human macrophages and dendritic cells
IntroductionPurpureocillium lilacinum is emerging as a causal agent of hyalohyphomycosis that is refractory to antifungal drugs; however, the pathogenic mechanisms underlying P. lilacinum infection are not understood. In this study, we investigated the interaction of P. lilacinum conidia with human macrophages and dendritic cells in vitro.MethodsSpores of a
Rev. Soc. Bras. Med. Trop.. Publicado em: 2014-10
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4. Identificação de fatores de transcrição e sinais celulares que regulam a expressão do gene cspC em Caulobacter crescentus. / Identification of transcription factors and cellular signals that regulate cspC gene expression from Caulobacter crescentus.
As proteínas de choque frio pertencem a uma família de proteínas com um domínio altamente conservado, denominado domínio de choque frio (CSD). Estão envolvidas em vários processos celulares, incluindo adaptação a baixas temperaturas, estresse nutricional e fase estacionária. Em C. crescentus, uma α-proteobacteria não pat
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/01/2012
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5. Efeito do ângulo da fieira na geometria e propriedades mecânicas de barras trefiladas
In cold drawing of metallic bars most of the plastic flow is caused by compressive forces which arise from the reaction of the metal to the die. Due to the characteristics of the process this flow is not homogeneous along the cross section of the bar and is influenced by the die geometry. This inhomogeneous deformation generates residual stresses in the bars
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/03/2011
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6. Indução de tolerância à deficiência hídrica na germinação e crescimento inicial de sementes de feijoeiro / The induced tolerance to water stress in the germination and early growth of bean seeds
As condições ambientais desfavoráveis fazem com que os vegetais passem por adaptações e a forma como se protegem é essencial, podendo aumentar a produção e qualidade dos alimentos. O feijão (Phaseolus vulgaris L) é de grande valor econômico e de relevante interesse agronômico. Tratando-se de uma cultura de sensibilidade à temperatura e deficiên
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/03/2011
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7. Identificação e caracterização de genes codificantes de proteínas ricas em glicina ligantes de RNA em soja (Glycine max (L.) Merril)
Molecular information on plant developmental process, as well as detailed knowledge of the interaction between stress conditions and plant response to environmental factors are essential for understanding the adaptive response. Glycine-Rich Proteins (GRP) have the amino acid glycine well represented in their primary structure. The genes encoding GRPs are dev
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
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8. Estudo da correlação entre temperatura corporal e dosagem de óxido nítrico plasmático em pacientes com sepse, sepse grave e choque séptico / Correlation between body temperature and dosage of plasma nitric oxide in patients with sepsis, severe sepsis and septic shock
Septic shock is the most common complication of sepsis and responsible for a large number of cases of death in intensive care units. In patients with sepsis, fever is one of the most common signs, but hypothermia can occur and is usually associated with severe infections, worse prognosis and high mortality. The confluence of several factors contributing to t
Publicado em: 2010
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9. Functional characterization os mRNA-protein complexes (mRNPs) in Trypanosoma cruzi. / Caracterização funcional de complexos mRNA-proteínas (mRNPs) em Trypanosoma cruzi.
Em tripanossomatídeos a regulação da expressão gênica ocorre principalmente em nível pós-transcricional. Acredita-se que a estabilidade do mRNA e o acesso aos polissomos sejam fortemente regulados, permitindo ao Trypanosoma cruzi uma rápida adaptação à diferentes condições ambientais as quais está exposto durante seu ciclo de vida. A regulaçã
Publicado em: 2010
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10. Análise do papel do gene cspC de Caulobacter crescentus e de sua regulação. / Study of the role cspC gene from Caulobacter crescentus and its regulation.
The cold shock response in bacteria involves the expression of cold shock proteins (CSPs), which destabilize secondary structures on mRNAs, allowing their translation. Caulobacter crescentus possesses four genes encoding CSPs: cspA and cspB are induced upon cold shock, while cspC and cspD are induced at stationary phase. In this work, a new sequence for the
Publicado em: 2009
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11. Tolerância ao congelamento em mutantes de Lactobacillus delbrueckii UFV H2b20 / Resistance to freeze in mutants of Lactobacillus delbrueckii UFV H2b20
Mutants of Lactobacillus delbrueckii UFV H2b20 were isolated after treatment with ultra violet light, acridine orange, or ethyl methane sulfonate. After the mutagenic treatments, ten colonies were picked randomly from each treatment and were the mutants characterized. Specific growth rate () and survival to successive freeze-thaw cycles were assessed for eac
Publicado em: 2009
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12. Tratamentos térmicos, cloreto de cálcio e atmosfera modificada em pêssegos IAC Douradão: aspectos fisiológicos, bioquímicos e de qualidade / Heat treatments, calcium chloride and modified atmosphere in IAC Douradão peach: physiological, biochemical and qualitative aspects
This study was carried out with the objective of evaluate the cold storage potential of IAC Douradãopeach and to determine effects of the heat treatment, calcium chloride application and modified atmosphere on the physiology, biochemistry and quality of this fruit, to increase the shelf-life of this cultivar. For this, five experiments were carried out. In
Publicado em: 2009