Below the superconducting transition temperature T(C), the nanobridge exhibits a series of sharp voltage steps as a function of current.
The multiple voltage steps are interpreted as a consequence of spatially localized phase slip centers LBH589 molecular weight or hot-spot formation in the bridge. Just below the critical current, the voltages versus current curve shows a power-law behavior in the low temperature region, but Ohmic near the T(C). The thermally activated phase slip, quantum phase slip, and imhomogeneity in a one-dimensional superconducting system may contribute to the observed results.”
“Seizures in the newborn period are common and frequently indicate serious underlying brain injury. Although accumulating evidence suggests that they may impair brain development, there a re Currently no evidence-based guidelines for evaluation and management of neonatal Seizures. In this review, RO4929097 we will address some of the Current controversies facing child
neurologists and neonatologists, including how to define, monitor, and treat neonatal seizures.”
“The herbs danggui (Angelica gigas) and clove (Eugenia caryophyllata) and 4 natural antioxidants were combined in order to investigate whether or not they exhibited synergistic effects (SEs) on DPPH radical scavenging capacity. SEs were determined using the ratio between experimental scavenging capacity (ESC) and theoretical scavenging capacity (TSC). In all tested mixtures, SEs were observed, indicating ESC/TSC ratios greater than 1. The highest SE (p < 0.01) was observed for the solution combining alpha-tocopherol (20 mu g/mL) and quercetin check details (0.7 mu
g/mL) with danggui of 0.3 mg/mL and clove of 0.05 mg/mL. The addition of lipid-soluble antioxidants resulted in greater SEs than the addition of water-soluble antioxidants. The excellent SE appeared when quercetin was added to the herb mixture, while the addition of ascorbic acid did not result in SE. The results indicate that the combinations of compounds with different antiradical effects may more effectively protect oxidative stress than alone.”
“The influence of the annealing atmosphere and temperature on the crystalline phase and composition of thin ZrO2 layers grown by atomic layer deposition on silicon is analyzed. These physical parameters are correlated with the electrical performance of ZrO2 in metal-insulator-semiconductor capacitor structures. For this study, 5.3 nm thick ZrO2 films were annealed at selected temperatures in the range of 400-900 degrees C in either nitrogen or ammonia atmospheres. As shown by grazing-incidence x-ray diffraction, the films start to crystallize at temperatures above 400 degrees C, resulting in a capacitance increase. An annealing in NH3 results in a higher capacitance increase than annealing in N-2. Angular-resolved x-ray photoelectron spectroscopy and secondary ion mass spectrometry show no changes in the chemical composition of ZrO2 after annealing in N-2.