The aim of the study was to compare the outcome of external DCR with and without stenting with silicon tube and analyse the results of silicon intubation whether it improves the overall success rate of DCR. Success rate for external DCR without STI was 80% in our study .Success rate for DCR with STI rose to 92%.Therefore DCR with STI is a highly successful procedure with a success rate of over ...

Moving beyond the limits of silicon transistors requires both a high-performance channel and high-quality electrical contacts. Carbon nanotubes provide high-performance channels below 10 nanometers, but as with silicon, the increase in contact resistance with decreasing size becomes a major performance roadblock. We report a single-walled carbon nanotube (SWNT) transistor technology with an end...

The Silicon Photomultiplier (SPM) addresses the challenge of detecting, timing and quantifying low-light signals down to the single-photon level. Traditionally the province of the Photomultiplier Tube (PMT), Avalanche Photodiode (APD), or PIN photodiode with high-gain amplifier, the Silicon Photomultiplier now offers a highly attractive alternative that closely mimics the low light detection ca...

Thin silicon filaments were grown from the melt by three different methods: (a) RF-heated float-zone pedestal growth of high-purity, dislocation-free, single-crystal filaments, (b) growth of <112> axis, (111) face, dendrite filaments at high pulling rates from a supercooled melt in a quartz crucible, and (c) capillary die growth of thin-walled, small-diameter Si tube-filaments with high ratio o...

We present a novel integration method for packaging silicon photonic sensors with polymer microfluidics, designed to be suitable for wafer-level production methods. The method addresses the previously unmet manufacturing challenges of matching the microfluidic footprint area to that of the photonics, and of robust bonding of microfluidic layers to biofunctionalized surfaces. We demonstrate the ...

A YAP(YAlO3 : Ce)-scintillating window, coated on its inner surface with an S20-photocathode, seals a cross-focusing hybrid photomultiplier tube (HPMT) equipped with a small p-i-n anode of 2-mm diameter. This new radiation detector separates X-ray lines down to about 2-keV peak energy from the HPMT noise. Its detection efficiency for high gamma energies depends on the YAP-window thickness and a...

A commercial flame ionization detector was converted to a gas chromatographic detector selective for silicon-containing compounds by simply interchanging the oxygen and hydrogen inlets so that the flame burned in a hydrogen atmosphere. The optimal configuration of various detector geometries was found to be a narrow cylindrical tube with the collector electrode positioned more than 10 cm from t...

Over the past decade, one-dimensional inorganic nanostructures have emerged as promising materials for fundamental studies and possible technological applications. These structures exhibit physical and chemical properties distinct from their bulk counterparts as a result of radial confinement, while they retain the advantages of wire-like connectivity. In particular, silicon 5] and silicide nan...

Epiphora is a clinical case characterised with the liquefaction of the eyes as the tears can not reach to the nasal cavity because of an obstruction in the nasolacrimal system. Endoscopic dacryocystorhinostomy (EDCR) can be used primary or as a revision surgery to treat chronic dacryocystitis. The aim of this study is to evaluate the results of EDCR operation. In the study, clinical results of ...

element detector module and still yield a practical design. In this paper we report results of measurements made on a 64 element detector module made with LSO scintillator crystal. We present performance results for a prototype PET detector module consisting of 64 LSO scintillator crystals (3x3x20 mm) coupled on one end to a single photomultiplier tube and on the opposite end to a 64 pixel arra...