Strange sea asymmetry in nucleons

We evaluate the medium effects in nucleon which can induce an asymmetry of the strange sea. The short-distance effects determined by the weak interaction can give rise to $\delta m\equiv \Delta m_s-\Delta m_{\bar s}$ where $\Delta m_{s(\bar s)}$ is the medium-induced mass of strange quark by a few KeV at most, but the long-distance effects by strong interaction could be sizable.Comment: 4 pages and no figures, Talk presented at the Third Circum-Pan-Pacific Symposium on "High Energy Spin Physics", Oct. 8-13, 2001, Beijing, Chin

2-Amino­terephthalic acid–4,4′-bipyridine (1/1)

The asymmetric unit of the title compound, C10H8N2·C8H7NO4, contains two half-mol­ecules, which constitute a 1:1 co-crystal. The 2-amino­terephthalic acid mol­ecule is situated on an inversion center being disordered between two orientations in a 1:1 ratio. In the 4,4′-bipyridine mol­ecule, which is situated on a twofold rotational axis, the two pyridine rings form a dihedral angle of 37.5 (1)°. In the crystal, mol­ecules are held together via inter­molecular N—H⋯O and O—H⋯N hydrogen bonds. The crystal packing exhibits π–π inter­actions between the aromatic rings with a centroid–centroid distance of 3.722 (3) Å

Applying the Cox Model to Study Online Gambling Behavior

Although a key objective of Internet gambling service providers is player retention, there is a concomitant need to reduce the social costs of gambling. Our study shows how habit and prospect theories help build an integrative framework for decision support in regulated Internet gambling environments. To illustrate the practical implication of this framework, we applied the Cox model with time-dependent covariates on real gambling data collected from 4,222 users of a gambling website. The results help establish the positive association of key indicators such as the prior outcomes on the activity lifespan of an Internet gambler and the moderating effect of gambling frequency on the positive association between prior outcomes and gambling lifespan. This research is expected to contribute to the literatures on IT adoption and diffusion in general, and IT-based addictive behavior in particular

Withaferin A induces apoptosis in rat C6 glioma cells through regulating NF-ΚB nuclear translocation and activation of caspase cascade

Background: The demand for the chemopreventive drug from the plant source is increasing in recent times, owing to its various biological activities without any adverse effect. The intention of this current study was to examine the antiglioma effect of Withaferin A (WFA) on C6 glioma cell line model.Materials and Methods: C6 glioma cells were administrated with different concentration of WFA (50, 100, 200 and 500 μg/mL) and DMSO (control) group to examine its anti-proliferative, anti-inflammatory and pro-apoptotic activities.Results: Treatment with WFA showed a significant decline in the glioma cell count in a dose-dependent manner and thus proving its anti-proliferative effect. Similarly, inflammatory markers were also substantially lowered upon treatment with different concentration of WFA. However, DNA fragmentation and apoptotic markers like Caspase-3 and 9 were concomitantly enhanced after co-cultured with different concentration of WFA and thus exhibiting its cytotoxicity efficacy. Furthermore, the protein expression of Bcl2 and Bax were markedly downregulated and upregulated respectively; upon treatment with WFA on C6 glioma cells.Conclusion: The outcome of this study evidently demonstrates that C6 glioma cells co-cultured with increased concentration of WFA, showed an anti-proliferative, anti-inflammatory and pro-apoptotic effect in a dose-dependent fashion.Keywords: Withaferin A, C6 glioma cells, anti-proliferative, anti-inflammatory, caspase, apoptosi

N-Diphenyl­phosphanyl-N-{[diphen­yl(2-pyridyl­imino)-λ5-phosphan­yl]meth­yl}pyridin-2-amine

In the title compound, C35H30N4P2, the diphenyl­phosphanyl and diphen­yl(2-pyridyl­imino)-λ5-phosphanyl groups are attached to the central methyl C atom with a P—C—N angle of 114.09 (16)°. The mol­ecules stack along the b axis and inter­connect through C—H(pyrid­yl)⋯N(pyrid­yl) inter­actions, forming an infinite chain structure. The parallel chains are further inter­connected via C—H(benzene)⋯N(amino) and C—H(benzene)⋯π inter­actions, forming a three-dimensional framework