PURPOSE To report a case of acute hydrops in pellucid marginal corneal degeneration (PMCD) documented with anterior segment optical segment tomography and successfully treated with sulphur hexafluoride (SF6) intracameral injection. METHODS A 47-year-old female patient presented with spontaneous onset of pain, redness and decreased vision in her left eye. Clinical evaluation revealed bilateral...

Microwave plasma sources at atmospheric pressure have a variety of different applications and therefore are object of intense research. This paper covers the spectroscopic investigation of an atmospheric pressure microwave plasma torch and experiments concerning the abatement of the perfluorinated compounds CF4 and SF6. By means of optical emission spectroscopy the gas temperature of a humid ai...

Introduction: Since the finding and correction of an error in previous spiroware versions commonly used with Exhalyzer D for multiple-breath washout (MBW) analysis, there has been ongoing discussion about its impact on preceding results clinical implication. Methods: In this study, we reanalyzed previously published findings corrected 3.3.1.20 healthy controls 31 infants cystic fibrosis (CF) ha...

the role of low-pressure rf plasma in the inactivation of escherichia coli o157, klebsiella pneumoniae, proteus mirabilis, and enterobacter sakazakii using n2-o2 and sf6 gases was assessed. 1×109 colony-forming units (cfus) of each bacterial isolate were placed on three polymer foils. the effects of pressure, power, distance from the source, and exposure time to plasma gases were optimized. the...

We present a study on thick Si-rich nitride/polycrystalline Si/silicon oxide multilayer-stacks made by LPCVD and PECVD techniques. The pattern transfer into the multilayer-stacks is achieved by dry etching techniques such as SF6-based ICP plasma and the so-called Bosch processes. The steep profiles and high selectivity obtained for the developed processes allow us to design and fabricate comple...

In the present paper we describe a search for gases that allow to reduce the energy of the electrical discharge produced in Resistive Plate Chambers (RPCs) operated in streamer mode, by reducing both the operating voltage and the released charge. This can be achieved, with current gas mixtures of argon, tetrafluoroethane (TFE) and isobutane, by reducing the total amount of quenching components ...

Chemical by product diagnostic technique is an efficient, cost-effective and reliable diagnostic technique for gas insulate switchgear condition monitoring in view of its high sensitivity and antiinternal and external electromagnetic interference and noise. In this research paper, coaxial simulated gas insulated switchgear chamber and four different types of artificial defect were designed to c...

The controlled depletion of electrons in semiconductors is the basis for numerous devices. Reactive-ion etching provides an effective technique for fabricating both classical and quantum devices. However, Fermi-level pinning must be carefully considered in the development of small devices, such as quantum dots. Because of depletion, the electrical size of the device is reduced in comparison wit...

The role of low-pressure RF plasma in the inactivation of Escherichia coli O157, Klebsiella pneumoniae, Proteus mirabilis, and Enterobacter sakazakii using N2-O2 and SF6 gases was assessed. 1×10(9) colony-forming units (CFUs) of each bacterial isolate were placed on three polymer foils. The effects of pressure, power, distance from the source, and exposure time to plasma gases were optimized. T...