When the stagnation temperature increases, the specific heat does not remain constant and start to vary with this temperature. The gas is perfect, it ’ s state equation remains always valid, except, it was called by gas calorically imperfect or gas at high temperatures. The purpose of this work is to develop a mathematical model for a normal shock wave normal at high temperature when the stagna...

A prior hyperthermic stress (heat shock) can induce thermoprotection of neuromuscular transmission in Locusta migratoria extensor tibiae muscle measured 4 h after the onset of the heat shock. It is not clear what effect an acute hyperthermic stress may have on the nervous system's ability to tolerate thermal stress, that is, before increased expression of heat-shock proteins. We found that over...

Metal electrodes with micron scale width enable the heating of less than a dozen cells in a confluent layer at predictable temperatures up to 85 °C with an accuracy of ±2 °C. Those performances were obtained by a preliminary robust temperature calibration based on biotin-rhodamine fluorescence and by controlling the temperature map on the substrate through thermal modeling. The temperature accu...

BACKGROUND Heat shock is a potential control strategy for Legionella pneumophila in hot water plumbing systems. However, it is not consistently effective, with little understanding of its influence on the broader plumbing microbiome. Here, we employed a lab-scale recirculating hot water plumbing rig to compare the pre- and post-"heat shock" (i.e., 40 → 60 → 40 °C) microbiota at distal taps. In ...

Sixty Angus steers (449.2±11.0 kg) with implanted body temperature (BT) transmitters were used in a 110-d study to determine the effect of chronic stress (housing, diet, and climate) on extracellular heat shock protein 70 (eHsp70) concentration in plasma. The steers were a subset of a larger study involving 164 steers. Before the start of the study (d -31), 63 steers were implanted with a BT tr...

Apoptosis is a form of cell death that can function to eliminate cells damaged by environmental stress. One stress that can compromise embryonic development is elevated temperature (i.e., heat shock). For the current studies, we hypothesized that heat shock induces apoptosis in bovine embryos in a developmentally regulated manner. Studies were performed to 1) determine whether heat shock can in...

Pretreatment of tissues or whole organisms with high, sublethal temperatures (heat shock) induces thermotolerance to normally lethal temperatures. It is of interest whether heat shock induces protection of neuronal function at normally lethal temperatures by investigating effects of heat shock on the temperature sensitivity of neuronal parameters in the locust flight system. The rhythm frequenc...

Treated sewage source heat pump systems can reuse the waste energy in the treated sewage. However, biofilms in the heat exchangers decrease the system efficiency. This work investigates the feasibility of thermal shock at accessible temperatures in heat exchangers for biofilm inhibition. Bacillus subtilis biofilms were formed on coupons and in a miniaturized plate heat exchanger. Thermal shocks...

Heat treatment of D. melanogaster tissue culture cells causes drastic changes in the pattern of protein synthesis and the size distribution of polysomes. Like the heat shock puffs on polytene chromosomes which appear while preexisting puffs regress, heat shock proteins appear on gels while the synthesis of preexisting proteins is sharply reduced, and heat-induced polysomes appear on gradients a...

Heat acclimation enables plants to tolerate and survive short-term heat stress on hot days. In Arabidopsis thaliana, a genetically programmed heat shock response can be rapidly triggered in the temperature range of 32-38°C through activation of heat shock transcription factors (HSF). The heat shock response leads to heat acclimation and confers short-term protection against temperatures above 4...