Core temperature

After mixing, doughs are immediately divided and rounded, rested briefly, then molded. Molded units are rapidly fro2en ia blast (or other) free2ers uatil reaching a core temperature of about —7 to —5°C. Units are boxed and stored at — 18°C, then shipped to end users. End users slowly thaw these products in 2°C retarders over 16—18 h, proof, and bake the products as needed (37—41). 

Figure D-5 Curve illustrating the degradation of B at with core temperature (3C8 material shown). (Courtesy of Philips Components.)...

The temperature of pressing has also a noticeable effect [226,227] as it does influence the surface/core temperature gradient and has a direct influence on the temperature rise in the board core layer. In short, the higher the press temperature, the faster the heat conduction and the faster the development of the steam gradient across the wood mat. The press temperature will influence the steam front transfer time to the core layer. The higher the initial temperature, the faster the steam front enters the mat core. Increasing the press temperature will cause the maximum steam pressure peak to appear earlier but does not result in a higher core temperature. 

The body temperature limits for health in terms of internal or core temperature are fairly limited. The limits are basically related to the function of nervous tissue. Body temperatures around 28 °C or less can result in cardiac fibrillation and arrest. Temperatures of 43 °C and greater can result in heat stroke, brain damage, and death. Often, too high a temperature causes irreversible shape changes to the protein molecules of nervous tissue. That is, cooling overheated tissue to normal temperatures may not restore its original function. 

The metabolic energy generated by the core (M) is lost by (1) doing work, (2) respiration, (3) passive heat conduction to the skin, and (4) active blood flow to the skin. Any heat not transferred from the core is stored, with a resulting increase in core temperature. Work is energy that leaves the body as in... 

FIGURE S.3 Schematic of skin and core temperatures for a neutral thermal sensation. 

The consequence of the relationships of Table 5.3 and Fig. 5.2 is that for a neutral thermal sensation, at steady state, the core temperature increases while the skin temperature decreases with increased metabolic activity (Fig. 5.3). The increase in metabolism causes sweating which decreases skin tem-perature. 

Disruption of these defense mechanisms can lead to bacterial colonization or viral infection. Mucus temperature is important in controlling respiratory infections because decreasing below central body core temperature not only impairs ciliary movement,hut also enhances viral replication,- greatly increasing the likelihood of respiratory infection. Drying of airway mucus also increases the possibility of respiratory infection by reducing mucus thickness and impairing mucociliary clearance, i- i--... 

Body core temperature Hypothetical average internal organ temperature,... 

ISO EN 9886 presents the principles, methods, and interpretation of measurements of relevant human physiological responses to hot, moderate, and cold environments. The standard can be used independently or to complement other standards. Four physiological measures are considered body core temperature, skin temperature, heart rate, and body mass loss. Comments are also provided on the technical requirements, relevance, convenience, annoyance to the subject, and cost of each of the physiological measurements. The use of ISO 9886 is mainly for extreme cases, where individuals are exposed to severe environments, or in laboratory investigations into the influence of the thermal environment on humans. 

Body core temperature increase The increase in body core temperature that takes place due to the inability of the body to get rid of heat. 

Body temperature The temperature of a human body, either the body core temperature, the mean temperature of the body, or the temperature at some point on the skin.. lso, the temperature of a surface which is radiating, conducting, or convecting heat. 

Core temperature The deep core temperature of a living body resulting from metabolism. 

Maximum body heat storage (Q, 3, ) The maximum value of the body heat gain achievable by the subject such that the resulting increase in body core temperature does not induce pathological effect, in W h nr-. 

Figure 6. Dose-response curve of core temperature for rats given 1-hr...

Figure 10. Response curves of core temperature for rats given 1-hr infusion of PbTx-2 (100 pg/kg) followed by a 10-min infusion of 2 ml...

The liquid core temperature and velocity distribution analysis was suggested by Bankoff (1961). 

Liquid core temperature and velocity distribution analysis. BankofT (1961) analyzed the convective heat transfer capability of a subcooled liquid core in local boiling by using the turbulent liquid flow equations. He found that boiling crisis occurs when the core is unable to remove the heat as fast as it can be transmitted by the wall. The temperature and velocity distributions were analyzed in the singlephase turbulent core of a boiling annular flow in a circular pipe of radius r. For fully developed steady flow, the momentum equation is given as... 

Hyperthermia An increase in body core temperature, as caused by MDMA, for instance. 

PMS stars with M < 0.35 M0 have a simple structure - they are fully convective balls of gas all the way to the ZAMS. As the star contracts along its Hayashi track the core heats up, but the temperature gradient stays very close to adiabatic except in the surface layers. Li begins to burn in p, a reactions when the core temperature, Tc reaches c 3x 106 K and, because the reaction is so temperature sensitive (oc Tc16-19 at typical PMS densities) and convective mixing so very rapid, all the Li is burned in a small fraction of the Kelvin-Helmholtz timescale (see Fig. 1). 

Structural Effects of Rotation Rapid rotation in a fully convective star decreases the core temperature, but actually increases Tt,cz once a radiative core has developed. The net effect on Li depletion seems to be rather small and cannot explain the dispersion of Li abundances seen among the slow rotating ZAMS stars [24]. 

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