Heating up

Heating up the cold bounce

Self-dual string cosmological models provide an effective example of bouncing solutions where a phase of accelerated contraction smoothly evolves into an epoch of decelerated Friedmann–Robertson–Walker expansion dominated by the dilaton. While the transition to the expanding regime occurs at sub-Planckian curvature scales, the Universe emerging after the bounce is cold, with sharply growing gau...

Tokamak start-up with electron-cyclotron heating

Experiments are described in which the start-up voltage in a tokamak is reduced by about a factor of two by the use of a modest amount of electron cyclotron resonance heating power for pre-ionization. The solution of the zero-dimensional start-up equations indicates that the effect is due to the high initial density which increases the rate at which the conductivity increases in the neutral-dom...

Heating up the cutaneous flushing response.

Quaternary Cu (InxGa1-x) Se2 Nanoparticles Synthesis Using Heating-up Method for Photovoltaic Applications

In this paper, tetragonal chalcopyrite (CIGS) Cu(InxGa1-x)Se2 with x=0, 0.5, 0.8, 1 are synthesized by heating-up method. These nanoparticle structures differ in morphology and absorption properties due to the synthesis temperatures of 250, 255, 260, 265, 270 and 280 ºC, and gallium molar ratio over the total gallium and indium contents. These features are studied using scanning electron m...

Homologous recombination research is heating up and ready for therapy.

A report in PNAS suggests that mild hyperthermia can inhibit the process of homologous recombination (HR) and degrade the BRCA2 protein (1). Cellular hyperthermia, up to temperatures of 41 °C to 43 °C, has long been known to be a potent radiosensitizer of proliferating cells, providing the opportunity to enhance the tumoricidal effects of therapeutical radiation, because most nonmalignant cells...