Acoustic stability of a self-gravitating cylinder leading to astrostructure formation.

We employ a quantum hydrodynamic model to investigate the cylindrical acoustic waves excitable in a gyromagnetoactive self-gravitating viscous cylinder comprised of two-component (electron-ion) plasma. The electronic equation of state incorporates the effect of temperature degeneracy. It reveals an expression for the generalized pressure capable of reproducing a completely degenerate (CD) quantum (Fermi) pressure and a completely non-degenerate (CND) classical (thermal) pressure.

A hybrid GNA instability.

A semi-analytic admixed model formalism to study the stability effects of the inner crust regions against the local collective perturbations in non-rotating neutron stars is proposed. It consists of the viscoelastic heavy neutron-rich nuclei, superfluid neutrons, and degenerate quantum electrons. A normal spherical mode analysis yields a generalized linear dispersion relation multiparametrically mimicking the inner crust features of neutron stars.

Intracavernous sodium nitroprusside (SNP) versus papaverine/phentolamine in erectile dysfunction: a comparative study of short-term efficacy and side-effects.

Objective: The aim of our work is to evaluate the efficacy of intracavernous sodium nitroprusside (SNP) in management of erectile dysfunction (ED) in a clinical comparative study with papaverine/phentolamine in ED patients.

Methods: The study included 40 patients with ED divided into two groups. Group I include 20 patients receiving intracavernous (30 mg papaverine + 1 mg phentolamine) followed 1 week later by intracavernous 300 microg SNP.