We study the optical appearance of a thin accretion disk around Schwarzschild black hole pierced by cosmic string with semi-analytic method Luminet [Astron. Astrophys. 75 (1979) 228]. Direct and secondary images different parameters observed distant observer are plotted. The parameter [Formula: see text] can modify shape size image. calculate plot distribution both redshift flux as seen observe...

Variations in the structures at the root of neck are important in understanding many clinical and surgical conditions. Scalenus anterior, the key muscle in the neck, usually related to the roots of brachial plexus in its posterior aspect. This study was designed to evaluate the relations of roots of brachial plexus to the scalene muscles. Posterior triangles of neck on both sides were studied i...

We present results of the transmitted, reflected, and absorbed power associated with the enhanced transmittance of light through a silver film pierced by a periodic array of subwavelength holes. Comparing experimentally acquired dispersion curves under different polarization conditions shows that the transmission features of the array are consistent with p-polarized resonant modes of the struct...

Chronic pain in the Achilles tendon. Access to the published version may require subscription. PREFACE According to Greek mythology, the legendary warrior Achilles was invulnerable except for his heel. It is written in the Iliad that he died due to an arrow that pierced his Achilles tendon, thus the " Achilles' heel " came to symbolise a person's principal weakness. Nowadays, weakness of the Ac...

Intracardiac foreign bodies are a rare condition with a varied clinical presentation. The most common etiology is venous migration of endovascular objects so symptoms can develop months or even years after inoculation. We present the case of 56-year-old male with post-exertional angina. The patient was suspected to have coronary artery disease revealed but subsequent coronary angiography reveal...

Bloch-like oscillations induced by charge discreteness in quantum mesoscopic rings. We study the effect of charge discreteness in a quantum mesoscopic ring wih inductance L. The ring is pierced by a time depending external magnetic field. When the external magnetic flux varies uniformly, the current induced in the ring oscillates with a frequency proportional to the charge discreteness and the ...