Recent experiments with ultracold neutral plasmas show an intrinsic heating effect based on the development of spatial correlations, which has been termed " correlation heating ". We investigate whether this effect can be reversed, so that imposing strong spatial correlations could in fact lead to cooling. We find that cooling is indeed possible. It requires, however, a very precise preparation...

Recent observations by Chandra and XMM-Newton demonstrate that the central gas in "cooling flow" galaxy clusters has a mass cooling rate that decreases rapidly with decreasing temperature. This contrasts the predictions of a steady state cooling flow model. On the basis of these observational results, the gas can be in a steady state only if a steady temperature dependent heating mechanism is p...

-The present investigation is based on the effect of thermal residual stresses on the both thermal expansion and damping behavior of Al/Al2O3 Metal Matrix Composites (MMCs) processed by compo casting. Thermal expansion and damping properties have been studied experimentally as a function of temperature over a temperature range from room temperature to 400°C both in the heating and cooling cycle...

This contribution presents the analysis of possible utilizing of a tri-generation system for effective electricity, heat and cool production. A tri-generation offers more effective utilizing of primary energy sources in comparison with separate production of different kinds of energy. Natural gas is considered as the most common primary energy source utilized in tri-generation units. This analy...

Energetic and exergetic analyses as well as optimization studies of a transcritical carbon dioxide heat pump system are presented in this article. A computer code has been developed to obtain sub-critical and super-critical thermodynamic and transport properties of carbon dioxide. Estimates for irreversibilities of individual components of the system lead to possible measures for performance im...

Temperature Classifications..................................................... 12.1 CLOSED WATER SYSTEMS.................................................... 12.2 Method of Design ..................................................................... 12.2 Thermal Components ............................................................... 12.2 Hydraulic Components ...................................

U S hramm z, T S hatz x, M Bussmann, D Habs Sektion Physik, Ludwig-Maximilians-Universit at M un hen, D-85748 Gar hing, Germany E-mail: ulri h.s hramm physik.uni-muen hen.de Abstra t. The rystallization of ion beams has re ently been established in the rf quadrupole storage ring Pallas for laserooled 24Mg+ ion beams at an energy of about 1 eV. Yet, unexpe tedly sharp onstraints had to be met...

The purposes of this study were to assess the expression patterns of heat shock proteins (Hsps), after eyeball heating or cooling, and to elucidate their relationships with corneal wound healing and intraocular complications after excimer laser treatment. Experimental mice were grouped into three according to local pretreatment type: heating, cooling, and control groups. The preconditioning was...