Prostate Cancer and Prostatic Diseases (2010) 13, 97-101; doi:10.1038/pcan.2009.51; published online 24 November 2009″
“We prepared a series of thermal performance-enhanced heat storage composite phase change materials containing carbon fibers. It revealed that the composites have Rigosertib supplier reduced both melting point and latent heat capacity with an increase in the mass fraction of the carbon fibers (CF) or mechanochemical treated CF (M-CF). Composites have enhanced thermal conductivities compared to palmitic acid (PA), with the enhancement ratios increasing with the mass fraction of additives. M-CF/PA enhances more thermal conductivity
than CF/PA does when they contain the same additives and are at the same temperature. Thermal conductivity enhancement of 0.5 wt. % M-CF/PA is 239.2% in liquid state, compared with PA. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3656991]“
“Nickel ferrite nanoparticles dispersed in SiO(2) matrix have been synthesized by sol-gel method. Structural analysis has been performed by using x-ray diffraction and transmission electron microscopy. Magnetic properties have been investigated by using superconducting quantum interference device magnetometry. In addition to the average blocking temperature peak at T(B) = 120 K measured by a zero field cooled temperature scan of the dc susceptibility, an
additional hump near 15 K is observed. Temperature dependent out-of-phase ac susceptibility https://www.selleckchem.com/products/prt062607-p505-15-hcl.html shows the same features: one broad peak at high temperature and a second narrow peak at low temperature. The high temperature peak corresponds to magnetic blocking of individual nanoparticles, while the low temperature peak is attributed to surface spin-glass freezing which becomes dominant for decreasing particle diameter. To prove the dynamics of the spin (dis) order in both regimes of freezing and blocking, the frequency dependent ac susceptibility is investigated under a biasing dc field. The frequency shift in the “frozen” low-temperature ac susceptibility peak is fitted to a dynamic Selleck Rigosertib scaling law with a critical exponent zv=7.5, which indicates
a spin-glass phase. Exchange bias is turned on at low temperature which signifies the existence of a strong core-shell interaction. Aging and memory effects are further unique fingerprints of a spin-glass freezing on the surface of isolated magnetic nanoparticles. (C) 2011 American Institute of Physics. [doi:10.1063/1.3527932]“
“The therapeutic regimen for patients suffering of HCC in liver cirrhosis must pay attention to the underlying liver disease. Surgical resection is often limited by liver function and transplantation, as an optimal therapy for many early diagnosed HCC, by the availability of organs. Due to three prospective, randomized trials radiofrequency ablation (RFA) is the standard method of local ablation. RFA compared with resection for HCC in liver cirrhosis yields similar results concerning overall survival but a lower rate of complications.