Within these approximations we find that the ground state of rutile phase V1-xCrxO2 is quite simple. Both V and Cr are in the +4 state, implying that the V and Cr ions have moments of 1 mu(B) and selleck chemicals llc 2 mu(B), respectively. Similar to CrO2, V1-xCrxO2 is predicted to be ferromagnetic and half-metallic. Our results appear

to be consistent with the experimental observations that VO2 is paramagnetic and metallic for temperatures above 340 K where it is stable. It is not clear, however, that these results are completely consistent with recent experimental observations of ferromagnetism at low temperature in V1-xCrxO2 for x=0.1 and x=0.2. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3072033]“
“This article deals with a phytochemical investigation of Melicia excelsa from which melicilamide A (1), a new ceramide has been isolated. Its structure was determined by comprehensive analyses of its H-1- and C-13-NMR,

COSY, HMQC and HMBC spectroscopic, EI-MS and ESI-MS data. The remaining one known compound was identified as -sitosterol glucopyranoside.”
“The acetabular labrum plays an important role in hip biomechanical function and stability. Labral tears can result in appreciable clinical symptoms and joint dysfunction and may predispose the hip to chondral damage and osteoarthritis. Magnetic resonance FK228 manufacturer imaging is an effective tool for detecting and characterizing click here labral tears. Direct magnetic resonance arthrography is the most commonly used and validated technique for evaluating the labrum. However, indirect magnetic resonance arthrography and non-arthrographic magnetic resonance imaging are two less invasive and less resource-intensive techniques that should also be considered. Orthopaedic surgeons and radiologists should strive to develop and implement minimally and noninvasive diagnostic magnetic resonance imaging protocols for the investigation of labral pathology.”
“Nucleation phenomena are critical for

the fabrication of W/Al(2)O(3) nanolaminates using atomic layer deposition (ALD) techniques. The nucleation and growth of W ALD on hydroxylated Al(2)O(3) ALD surfaces and Al(2)O(3) ALD on fluorinated W ALD surfaces was studied using in situ quartz crystal microbalance (QCM) and ex situ atomic force microscope (AFM) techniques. The QCM investigations revealed that Al(2)O(3) ALD readily nucleated on the fluorinated W surface and displayed “”substrate-enhanced growth.”" In contrast, WALD required 4-10 ALD cycles to nucleate on the hydroxylated Al(2)O(3) surface and displayed “”substrate-inhibited growth.”" The W ALD nucleation period was shorter for higher Si(2)H(6) and WF(6) reactant exposures.