The enhanced dilepton production observed by experiments at the CERN SPS is reviewed with emphasis on recent CERES Pb{Au data. The enhancement is strongest between the 2-pion threshold and the rho/omega resonance, and grows stronger than linear with centrality, which supports the expectation that pion annihilation of thermal origin is the dominant source. Theoretical calculations seem to requir...

In the holographic model of QCD, baryons are chiral solitons sourced by D4 flavor instantons in bulk of size 1/ √ λ with λ = gNc. Using the ADHM construction we explicit the exact two-instanton solution in bulk. We use it to construct the core NN potential to order Nc/λ. The core sources meson fields to order √ Nc/λ which are shown to contribute to the NN interaction to order Nc/λ. In holograph...

The high performance liquid chromatography (HPLC) enantioseparation of four β-blocking agents metoprolol, bisoprolol, propranolol and atenolol was performed on amylose tris-(3,5-dimethylphenylcarbamate) chiral stationary phase using n-hexane-ethanol-diethylamine (DEA) as the mobile phase and related chiral recognition mechanisms were discussed. Enantiomeric separation of the fourβ-blockers was ...

   In chiral and non-chiral electrophoretic resolution of basic drugs, adsorption of analytes to negatively charged capillary wall could lead to poor repeatability of migration time and peak area. In addition, chiral resolutions of basic drugs are commonly performed in low pH buffers. Therefore, longer analysis time due to suppression of electroosmotic flow (EOF) is another dilemma. In this wor...

In this research, the influence of structure on the tensile properties of single- walled carbon nanotubes (CNTs) is evaluated using molecular mechanics technique and finite element method. The effects of diameter, length and chiral angle on elastic modulus and Poisson’s ratio of armchair, zigzag and chiral structures are investigated. To simulate the CNTs, a 3D FEM code is developed using the A...

The current noise of a voltage biased interacting quantum wire adiabatically connected to metallic leads is computed in the presence of an impurity in the wire. We find that in the weak backscattering limit the Fano factor characterizing the ratio between noise and backscattered current crucially depends on the noise frequency omega relative to the ballistic frequency vF/gL, where vF is the Fer...

A nickel (0)-catalyzed asymmetric [2 + 2 + 2] cocyclization has been realized for the first time. This reaction involves conceptually new enantiotopic group selective formation of a nickelacyclopentadiene intermediate and produces an isoindoline derivative (73% ee, 78% conv. yield) and an isoquinoline derivative (54% ee, 62% yield) having benzylic chiral carbon centers. The synthesizing methods...

abstractthe liquid crystal director distribution is determined for a confined chiral nematic slab. the molecular director distribution of the field-controlled chiral nematic slab is directly calculated. the director profiles for the tilt and the twist angles, under different applied fields, are calculated in the slab with weak boundary conditions. then, the dependence of the threshold field on ...

conclusions our results showed that vitamin e plus omega free fatty acids decrease the severity of mastodynia better than vitamin e alone. results vitamin e plus omega free fatty acids are more effective than the use of vitamin e alone in decreasing mastodynia. significant difference was seen between the cardiff breast score (cbs) of the vitamin e group compared to vitamin e - omega group (p < ...