975 resultados para Shock


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The heat shock response in Escherichia coli is governed by the concentration of the highly unstable sigma factor sigma 32. The essential protein HflB (FtsH), known to control proteolysis of the phage lambda cII protein, also governs sigma 32 degradation: an HflB-depleted strain accumulated sigma 32 and induced the heat shock response, and the half-life of sigma 32 increased by a factor up to 12 in mutants with reduced HflB function and decreased by a factor of 1.8 in a strain overexpressing HflB. The hflB gene is in the ftsJ-hflB operon, one promoter of which is positively regulated by heat shock and sigma 32. The lambda cIII protein, which stabilizes sigma 32 and lambda cII, appears to inhibit the HflB-governed protease. The E. coli HflB protein controls the stability of two master regulators, lambda cII and sigma 32, responsible for the lysis-lysogeny decision of phage lambda and the heat shock response of the host.

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The purpose of this quasi-experimental study was to assess levels of compliance with the intervention bundles contained in a clinical pathway used in the treatment of patients with severe sepsis and septic shock, and to analyze the pathway’s impact on survival and duration of hospital stays. We used data on 125 patients in an Intensive Care Unit, divided into a control group (N=84) and an intervention group (N=41). Levels of compliance increased from 13.1% to 29.3% in 5 resuscitation bundle interventions and from 14.3% to 22% in 3 monitoring bundle interventions. In-hospital mortality at 28 days decreased by 11.2% and the duration of hospital stay was reduced by 5 days. Although compliance was low, the intervention enhanced adherence to the instructions given in the clinical pathway and we observed a decline in mortality at 28 days and shorter hospital stays.

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In presenting their priorities for the new European Commission, Miroslav Beblavý and Ilaria Maselli assert in this CEPS Commentary that the time has come to devise an EU-level shock absorption mechanism. In their view, the instrument that best aligns varying political and economic objectives is a form of reinsurance of national systems of unemployment insurance. The primary motivation for the reinsurance proposal is that it can have a substantial stabilising effect, especially in case of large shocks, and, at the same time, be politically realistic in terms of contributions, costs and administrative burdens.

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The crisis in Ukraine and the Russian intervention have brought about a situation in which it is necessary for Germany to make decisions and take action. No one in Berlin was prepared for this nor did anyone want this to occur. The effect of this is that the government has adopted a clearly critical stance on Russia, albeit in tandem with cautious diplomatic moves; it has given its consent to limited sanctions on representatives of the Russian elite, and has disapproved of economic sanctions. On the other hand, voices have been heard in the political debate in Germany not only warning of the catastrophic consequences of a deterioration in German-Russian relations but also those in fact expressing understanding for the Russian reaction. Although it is typical above all of the business circles engaged in Russia and the authors of Germany’s Ostpolitik to downplay the Kremlin’s moves, political parties and the German public are divided over how Germany should respond to Moscow’s policy, and this dispute will worsen. Berlin will take a whole array of actions to de-escalate the conflict, since the imposition of radical political and economic sanctions on Russia would also have a strong adverse effect on Germany. As regards sanctions, Germany would not only sustain economic losses, but they would also undermine the ideological foundations for the still popular vision for Germany’s strategy towards Russia in which great emphasis is laid on a strong “respect for the EU’s most important neighbour and its interests”.

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This book illustrates how the structure of the US banking market and the existence of federal institutions allowed regional financial shocks to be absorbed at the federal level in the US, thus avoiding local financial crisis. The authors argue that the experience of the US shows the importance of a ‘banking union’ to avoid severe regional (national) financial dislocation in the wake of regional boom and bust cycles. They also discuss the extent to which the institutions of the partial banking union, now in the process of being created for the euro area, should be able to increase its capacity to deal with future regional boom and bust cycles, thereby stabilising the single currency.

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At head of title: "In-house Laboratory Independent Research Program."

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Shock tubes have been used successfully by a number of investigators to study the biological effects of variations in environmental pressures (1,2,3). Recently an unusually versatile laboratory pressurization source became available with the capability of consistently reproducing a wide variety of pressure-time phenomena of durations equal to and well beyond those associated with the detonation of nuclear devices (4). Thus it became possible to supplement costly full-scale field research in blast biology carried out at the Nevada Test Site (5,6) by using an economical yet realistic laboratory tool. In one exploratory study employing pressure pulses of 5 to 10 sec duration wherein the times to max overpressure and the magnitudes of the overpressures were varied, a relatively high tolerance of biological media to pressures well over 150 psi was demonstrated (7). In contrast, the present paper will describe the relatively high biological susceptibility to long duration overpressures in which the pressure rises occurred in single and double fast-rising steps.

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Vita.

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"This work has been supported by the National Science Foundation under Grant G-1221"

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"Issuance Date: May 24, 1965"--cover ; "December 1964"--title page

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"DA-49-193-MD-2229."