نتایج جستجو برای: symmetric thermal stress

تعداد نتایج: 722675  

Journal: :Journal of cell science 1993
H H Kampinga

Cells that have been pre-exposed to thermal stress can acquire a transient resistance against the killing effect of a subsequent thermal stress. The cause for this phenomenon, called thermotolerance, seems to be an enhanced resistance of proteins against thermal denaturation and aggregation. This resistance can be expressed as an attenuation of damage formation (less initial damage) or as a bet...

2012
Carmen Ancín‐Azpilicueta Blanca Barriuso‐Esteban Rodrigo Nieto‐Rojo Nerea Aristizábal‐López

Thermal stress conditions during alcoholic fermentation modify yeasts' plasma membrane since they become more hyperfluid, which results in a loss of bilayer integrity. In this study, the influence of elevated temperatures on nitrogen metabolism of a Saccharomyces cerevisiae strain was studied, as well as the effect of different concentrations of SO(2) on nitrogen metabolism under thermal stres...

2014
Yao Fu Chang-Jiu He Peng-Yun Ji Zhi-Yong Zhuo Xiu-Zhi Tian Feng Wang Dun-Xian Tan Guo-Shi Liu

The cross-talk between oocyte and somatic cells plays a crucial role in the regulation of follicular development and oocyte maturation. As a result, granulosa cell apoptosis causes follicular atresia. In this study, sheep granulosa cells were cultured under thermal stress to induce apoptosis, and melatonin (MT) was examined to evaluate its potential effects on heat-induced granulosa cell injury...

Journal: :Journal of Mechanics 2021

Abstract The general solutions of the stress intensity factors (SIFs) for a cusp-type crack problem under remote uniform mechanical and thermal loads are presented in this work. According to complex variable theory method conformal mapping, symmetric airfoil is mapped onto unit circle, both temperature potentials used solve relevant boundary-value problems. By introducing auxiliary function app...

Journal: :Journal of evolutionary biology 2005
J G Sørensen F M Norry A C Scannapieco V Loeschcke

Multiple stress resistance traits were investigated in the cactophilic fly Drosophila buzzatii. Adults from seven populations derived from North-Western Argentina were compared with respect to traits relevant for thermal stress resistance and for resistance to other forms of environmental stress. The populations were collected along an altitudinal gradient spanning more than 2000 m in height, s...

2007
Jun Korenaga

[1] The development of transient thermal stress in suboceanic mantle is investigated on the basis of two-dimensional thermoviscoelastic models incorporating composite rheology appropriate for dry oceanic lithosphere. Thermal stress is shown to be sufficiently high to deeply fracture the coldest part of lithosphere, e.g., to the depth of at least 30 km (and possibly down to 50 km) in 100-Ma-old ...

2010
Changle. Liu Kenji. Tobita

The hydraulic simulation and structure coupled analysis were used to explore critical heat flux (CHF) margin of the W (tungsten) armour and the accommodation of the thermal stress between the cooling tube and the W armour. The t (wall thickness of the F82H tube) variation or as a constant were considered to analysis the heat removal capability of the cooling tube. It was found a nonlinear distr...

Journal: :Poultry science 1998
M A Mitchell P J Kettlewell

The rearing of large numbers of broiler chickens at geographically dispersed sites means that they have to be transported by road, over various distances, to centralized processing plants for slaughter. The birds may be exposed to a variety of stressors during transit, including the thermal demands of the transport microenvironment. The thermal environments experienced by broiler chickens durin...

2017
Turki M. Dawoud Morgan L. Davis Si Hong Park Sun Ae Kim Young Min Kwon Nathan Jarvis Corliss A. O’Bryan Zhaohao Shi Philip G. Crandall Steven C. Ricke

In some animals, the typical body temperature can be higher than humans, for example, 42°C in poultry and 40°C in rabbits which can be a potential thermal stress challenge for pathogens. Even in animals with lower body temperatures, when infection occurs, the immune system may increase body temperature to reduce the chance of survival for pathogens. However, some pathogens can still easily over...

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