We explore the phase structure induced by closed string tachyon condensation of toric nonsupersymmetric conifold-like singularities described by an integral charge matrix Q = (n1 n2 − n3 − n4), ni > 0, ∑ i Qi 6= 0, initiated in hep-th/0510104. Using gauged linear sigma model renormalization group flows and toric geometry techniques, we see a cascade-like phase structure containing decays to low...

Let H be a separable Hilbert space, Ac : Dc ⊂ H → H a densely defined unbounded operator, bounded from below, let Dmin be the domain of the closure of Ac and Dmax that of the adjoint. Assume that Dmax with the graph norm is compactly contained in H and that Dmin has finite positive codimension in Dmax. Then the set of domains of selfadjoint extensions of Ac has the structure of a finite-dimensi...

The interaction between trace shortwave radiative absorbers and the dynamical circulation is shown to be linearly unstable for horizontally uniform basic states with a vertical gradient in the basic state absorber mixing ratio. Two types of instability are identified, described as the advective mode and the propagating mode. The advective mode is usually unstable when the basic state absorber m...

Despite common acceptance of Big Bang hypothesis among most cosmologists, nonetheless there are criticisms from a small number of theorists partly supported by astronomy observation suggesting that redshift data could not always be attributed to cosmological expansion. In this paper, a new approach to cosmology “fractional calculus” has been developed that we hope will attract attention from as...

We characterize a regime of extreme (Jeans-like) instability, for strings evolving in cosmological backgrounds, in which the string's proper size grows asymptotically like the scale factor of the expanding Universe.We develop a new approximation scheme, based on the asymptotic proportionality of world-sheet and conformal times, for the systematic, quantitative description of such non-linear reg...

Objective: Today, addressing the issue of sustainability especially in agriculture has received more attention. Sustainability in the systems of Canola cultivation depends on many factors like ecological, social and economic dimensions and understanding these factors can result in formulation of policies and strategies for sustainable agricultural development. Methods: 8961 Canola farmers of Qa...

Objective: Inflammation along with oxidative stress has an important role in the pathophysiology of unstable angina which leads to acute myocardial infarction, arrhythmias and eventually heart failure. Curcumin has anti-inflammatory and anti-oxidant effects and thereby, it may reduce cardiovascular complications. This randomized controlled trial aimed to investigate the effects of curcumin on t...