Glow discharge mass spectrometry (GDMS) is a mature, versatile technique for the direct determination of trace elements in a variety of materials. The technique is an extension of the earliest forms of mass spectrometry. Processes inherent to the glow discharge, namely cathodic sputtering coupled with Penning ionization, yield an ion population from which semi-quantitative results can be direct...

A microchip electrospray emitter with a magnetic bead trap has been designed for solid-phase extraction-gradient elution-mass spectrometry (SPE-GEMS). The goal of this method is the detection of analytes at low concentrations and it is here demonstrated using reverse phase coated magnetic beads (Mbs) for the preconcentration and detection of the peptides. The sample is passed through the chip, ...

ferred-Arc Reactor,” Ph.D. Thesis, McGill University (1981). Devoto, R. S., “Transport Coefficients of Partially Ionized Argon,” The Physics ofFluids, 10, (2). 354 (1967). Eddy, T. L., E. Pfender, and E. R, G. Eckert, “Spectroscopic Mapping of the Nonequilibrium Between Electron and Excitation Temperatures in a 1 Atm Helium Arc,” ZEEE Trans. on Plasma Science, Ps-1, (4), 31 (1973). Fauchais, P....

This paper describes a novel architecture of fault tolerant Solid State Mass Memory (SSMM) for satellite applications. Mass memories with low-latency time, high throughput, and storage capabilities cannot be easily implemented using space qualified components, due to the inevitable technological delay of these kind of components. For this reason, the choice of Commercial Off The Shelf (COTS) co...

Solid pseudopapillary tumor is a rare pancreatic neoplasm that typically affects young women. Characteristic CT appearance is that of a mixed-density lesion with solid component peripherally and cystic component centrally. Even larger tumors are well encapsulated with sharp demarcation, amenable to complete resection.

Sanitary landfill is the common strategy for municipal solid waste management in developing countries. Anaerobic decomposition of disposed wastes in landfill under favorable conditions will lead to the landfill gas (LFG) emissions, considering as emerging air pollutants. The emission of greenhouse gases, including methane, resulting from municipal solid waste disposal and treatment processes ar...

Abstract Background Solid pseudo-papillary tumor of the pancreas (SPTP) is a rare disease with a low malignant potential. Though it shows low malignant potential 10% to 15% of the cases show aggressive behavior with metastatic involvement of the liver. The symptoms include abdominal discomfort and abdominal pain. It is very rare in early years of age. This is the case of a 10 year old girl wi...

in this study, urease production was investigated among thirteen strains of aspergillus niger seven strains isolated from soils of semnan province in iran and six strains obtained from persian type culture collection (ptcc). the enzyme production was screened in two submerged media quantitatively. the registered ptcc 5011 and the native s31 strains showed more urease production than the other e...