Advances in VLBI instrumentation now allow wideband recording that significantly increases the sensitivity of short wavelength VLBI observations. Observations of the supermassive black hole candidate at the center of the Milky Way, SgrA*, with short wavelength VLBI reduces the scattering effects of the intervening interstellar medium, allowing observations with angular resolution comparable to ...

Aims: To evaluate the clinical significance of macular hole closure types assessed by optical coherence tomography (OCT). Methods: This study involved 34 eyes of 32 patients who had undergone anatomically successful idiopathic macular hole surgery. The closed macular holes were categorised into two patterns based on OCT; type 1 closure (closed without foveal neurosensory retinal defect) and typ...

Using a rigorous and vector multipole method, we compute both losses and dispersion properties of microstructured optical fibers with finite cross sections. We restrict our study to triangular lattices of air-hole inclusions in a silica matrix, taking into account material dispersion. The fiber core is modeled by a missing inclusion. The influence of pitch, hole diameter, and number of hole rin...

BORED-HOLE ABSORPTION PITS By Rai Sahib KASHI PRASAD, m.b., b.s., d.p.h. Medical Officer, In-charge Health Unit, Parlabgarh Definition.?A bored-hole absorption pit is a hole 20 feet in depth and 16 inches in diameter, bored with a machine known as a boring outfit. A limited amount of sullage water is absorbed and disposed of by it every day. History.?Bored holes, which were originally introduce...

AIMS To evaluate the clinical significance of macular hole closure types assessed by optical coherence tomography (OCT). METHODS This study involved 34 eyes of 32 patients who had undergone anatomically successful idiopathic macular hole surgery. The closed macular holes were categorised into two patterns based on OCT; type 1 closure (closed without foveal neurosensory retinal defect) and typ...

We report quantitative analyses of drilling predation on the free-living, tube-dwelling serpulid polychaete Ditrupa arietina from the Cope Cabo marine succession (Pliocene, Spain). Tubes of D. arietina are abundant in the sampled units: 9 bulk samples from 5 horizons yielded ~5925 specimens of D. arietina. Except for fragmentation, tubes were well preserved. Complete specimens ranged from 3.1 t...

Drilling operations have an important role in manufacturing industries and the application range is about 33% among machining methods. In drilling processes, hole quality affected by workpiece material, parameters, drill diameter, bit features. this study, surface of wear were investigated experimentally when AISI 1040 steel Al7075 aluminum workpieces with twist drills. Three different types bi...

We report results from a computational study of film cooling from cylindrical holes inclined at 35 degrees with respect to a flat surface using Large Eddy Simulations (LES). The hole length is L/d = 3.5, distance between the holes is P/d = 3, boundary layer above the flat surface is turbulent with Reθ = 938, density ratio = 0.95, velocity ratio = 0.5. All pertinent components of geometry, namel...

Ams: To describe the characteristics and surgical outcomes of full thickness macular hole surgery after laser assisted in situ keratomileusis (LASIK) for the correction of myopia. Methods: 13 patients (14 eyes) who developed a macular hole after bilateral LASIK for the correction of myopia participated in the study. Results: Macular hole formed 1–83 months after LASIK (mean 13 months). 11 out o...

PURPOSE To evaluate the incidence of central hole-induced ring-shaped dysphotopsia after posterior chamber phakic implantable collamer lens (ICL) with central hole (hole ICL) implantation and to investigate the causes of central hole-induced dysphotopsia. METHODS The clinical study enrolled 29 eyes of 15 consecutive myopic patients implanted with hole ICL. The incidence of ring-shaped dysphot...