Context. X-ray observations of evolved supernova remnants (e.g. the Cygnus loop and the Vela SNRs) reveal emission originating from the interaction of shock waves with small interstellar gas clouds. Aims. We study and discuss the time-dependent X-ray emission predicted by hydrodynamic modeling of the interaction of a SNR shock wave with an interstellar gas cloud. The scope includes: 1) to study...

The stress-induced transcription of heat shock genes is controlled by heat shock transcription factor 1 (HSF1), which becomes activated in response to heat and other protein denaturants. In previous research on the eurythermal goby Gillichthys mirabilis, thermal activation of HSF1 was shown to vary as a function of acclimation temperature, suggesting the mechanistic importance of HSF1 activatio...

Context. X-ray emitting features originating from the interaction of supernova shock waves with small interstellar gas clouds are revealed in many X-ray observations of evolved supernova remnants (e.g., Cygnus Loop and Vela), but their interpretation is not straightforward. Aims. We develop a self-consistent method for the analysis and interpretation of shock-cloud interactions in middle-aged s...

The magnetohydrodynamic evolution of a dense spherical cloud as it interacts with a strong planar shock is studied, as a model for shock interactions with density inhomogeneities in the interstellar medium. The cloud is assumed to be small enough that radiative cooling, thermal conduction, and self-gravity can be ignored. A variety of initial orientations (including parallel, perpendicular, and...

Physiological processes that set an organism's thermal limits are in part determining recent shifts in biogeographic distribution ranges due to global climate change. Several characteristics of the heat-shock response (HSR), such as the onset, maximal, and upper limit of heat-shock protein (Hsp) synthesis, contribute to setting the acute upper thermal limits of most organisms. Aquatic animals f...

Thermal shock stability plays a great role in the selection of optimal refractory material. Different methods characterization were developed for this purpose, including implementation nondestructive testing. Image analysis is very well method different materials structures, as changes and occurred defects structure caused by influences. In paper, possible application image will be presented re...