We examine the decays of excited heavy mesons, including the leading power corrections to the heavy quark limit. We nd a new and natural explanation for the large deviation of the width of the D1(2420) from the heavy quark symmetry prediction. Our formalism leads to detailed predictions for the properties of the excited bottom mesons, some of which recently have been observed. Finally, we prese...

We construct a new class of asymptotically flat black hole solutions in EinsteinYang-Mills and Einstein-Yang-Mills-dilaton theory. These black hole solutions are static, and they have a regular event horizon. However, they possess only axial symmetry. Like their regular counterparts, the black hole solutions are characterized by two integers, the winding number n and the node number k of the ga...

A new series of 2-amino-benzo[de]isoquinoline-1,3-diones was synthesized and fully characterized in our previous paper. Here, their cytotoxic effects have been evaluated in vitro in relation to colon HCT-116, hepatocellular Hep-G2 and breast MCF-7 cancer cell lines, using a crystal violet viability assay. The IC50-values of the target compounds are reported in µg/mL, using doxorubicin as a refe...

Abstract Background Cancer is the leading cause of morbidity and mortality worldwide. It encompasses a large family diseases exhibiting abnormal cell growth with potential to invade or spread other part body. Natural extracts have been used as an efficient anticancer agent that show promising results. In this, study cytotoxicity effect Ayurvedic herbal extract code name V2S2 was studied compare...

In this study, 4',7-diacetoxyapigenin [4-(7-acetoxy-5-hydroxy-4-oxo-4H-chromen-2-yl) phenyl acetate] was synthesized for the first time. Its chemical structure was identified by UV, ESI-MS, (1)H and (13)C-NMR. It could inhibit the proliferation of Hep G2 cells in a dose-dependent manner and induce the significant increase of the G0/G1 cell population. After treatment by 4',7-diacetoxyapigenin, ...

Telomere-associated proteins function as survival factors in telomere maintenance, which are major contributors to radiosensitivity in human cancers. The aim of this study was to investigate the association of telomere-associated gene expression and radiation resistance in human larynx squamous carcinoma. The changes of telomere-associated gene expressions and bionomical characteristics that oc...

A new secobutanolide, secoaggregatalactone A ( 1) was isolated from the leaves of Lindera aggregata. Results obtained from the cytotoxicity assay revealed that secoaggregatalactone A exhibited a noticeable cytotoxicity (EC (50) = 6.61 microg/mL; 22.1 microM) against the human hepatoma cell line (Hep G2 cell line). According to morphological observations, flow cytometric analysis, and DNA fragme...

We present, in explicit matrix representation and a modernity befitting the community, the classification of the finite discrete subgroups of G2 and compute the McKay quivers arising therefrom. Of physical interest are the classes of N = 1 gauge theories descending from M-theory and of mathematical interest are possible steps toward a systematic study of crepant resolutions to smooth G2 manifol...

We consider the possibility of localizing gravity on a Nielsen-Olesen vortex in the context of the Abelian Higgs model. The vortex lives in a sixdimensional space-time with negative bulk cosmological constant. In this model we find a region of the parameter space leading, simultaneously, to warped compactification and to regular space-time geometry. A thin defect limit is studied. Regular solut...

Using the graphical method developed in hep-th/9908082, we obtain the full curve corresponding to the hyperkähler quotient from the extended E7 Dynkin diagram. As in the E6 case discussed in the same paper above, the resulting curve is the same as the one obtained by Minahan and Nemeschansky. Our results seem to indicate that it is possible to define a generalized Coulomb branch such that four ...