The geometrical structuring of a material to increase both physical and mechanical qualities is known as Severe plastic deformation (SPD). To obtain superior qualities, the co-channel angular (ECAP) approach, which an alternative conventional deformation, applied developed. When compared previous procedures, substan- tially smaller grain size obtained result applying large unit defor- mation pa...

Short-timescale atomic rearrangements are fundamental to the kinetics of glasses and frequently dominated by one atom moving significantly (a rearrangement), while others relax only modestly. The rates directions such (or hops) distributions activation barriers ( E act ) for rearrangement a single how those vary across atoms in system. We have used molecular dynamics simulations Cu 50 Zr metall...

Quantum chemical calculations are used to assess various means of lowering the barrier for the dyotropic rearrangement previously proposed to occur during the carbocation rearrangement process promoted by pentalenene synthase. Several means of lowering this barrier, including a stepwise pathway for dyotropic rearrangement, are uncovered.

BACKGROUND Diffuse large B-cell Lymphoma (DLBCL) represents the most frequent type of non-Hodgkin lymphoma (NHL). Although combination chemotherapy has improved the outcome, long-term cure is now possible for approximately 50% of all patients, making the search for parameters identifying patients at high risk particularly needed. The presence of bcl-2 gene rearrangement in de novo DLBCL suggest...

An asymmetric Lewis acid-mediated [2,3]-sigmatropic rearrangement of allylic amines has been developed, affording the corresponding homoallylic amines in good yield and excellent enantioselectivities. The rearrangement proceeds by complexation of the chiral Lewis acid to the amine followed by deprotonation and rearrangement.

An investigation of the utility of N-sulfonyloxaziridines to effect the oxidative rearrangement of tetrahydrobenzimidazoles to spiro fused 5-imidazolones is reported. In addition to the anticipated rearrangement manifold, it was found that 2-amino substituted derivatives afford products resulting from rearrangement, or alternatively from addition of methanol or water depending on the nature of ...

INTRODUCTION Detection of the ALK rearrangement in a solid tumor gives these patients the option of crizotinib as an oral form of anticancer treatment. The current test of choice is fluorescence in situ hybridization (FISH), but various cheaper and more convenient immunohistochemical (IHC) assays have been proposed as alternatives. METHODS Fifteen FISH-positive cases from patients, seven with...

We present the results of a successful synthesis and investigation polycrystalline Fe2+(Cr3+, Fe3+)2O4 powder, where 1/8 part Cr3+ ions in octahedral sites is substituted by Fe3+ ones. It shown that under such doping, material retains cubic spinel structure characteristic parent FeCr2O4 compound. However, values critical temperatures have changed. Both orbital magnetic orderings occur at about ...

Unsaturated titanium hydride (TiHX) powder has high formability and is a promising raw material for titanium-based metallurgy. In this work, TiH2, TiHX, HDH Ti powders were characterized, the cold compaction behavior of was investigated, densification mechanism analyzed. The TiHX three-phase mixture containing an α plastic phase δ ε brittle phases through Rietveld refinement. compacts had compr...

the synthesis of nano- structured cobalt through a controlled chemical process followed by heat treating at various temperatures is studied. the product is characterized by icp, xrd, fesem , and tem, indicating that the as- synthesized particles have an amorphous structure with 1.76 for co/b ratio, an average size of 50 nm. the transformation of intermediate phases into single phase nano- cryst...