The distribution of organic species is explored using data acquired from a new dual quadrupole system that routinely measures eighteen gaseous species. The process of condensation and its affect on gas distribution is modeled, and a new discrimination diagram based on total gaseous species and the CO2/N2 ratio is introduced. We conclude that organic species concentrations indicate source; that ...

LPCVD is a process used in the manufacturing of the deposition of thin films on semiconductors usually ranging from a few nanometers to many micrometers. LPCVD is used to deposit a wide range of possible film compositions with good conformal step coverage. These films include a variety of materials including polysilicon for gate contacts, thick oxides used for isolation, doped oxides for global...

This research investigates the efficacy of gaseous ozone, applied under partial vacuum in a controlled reaction chamber, for the elimination of Salmonella inoculated on melon rind. The performance of high dose, short duration treatment with gaseous ozone, in this pilot system, on the microbial and sensory quality of fresh-cut cantaloupes was also evaluated. Gaseous ozone (10,000 ppm for 30 min ...

Prions pose a challenge to decontamination, particularly before the re-use of surgical instruments. They have relatively high resistance to standard decontamination methods and require extreme chemical and/or heat-based treatments for devices used in known or suspected cases of disease. This study investigated the effectiveness of a new gaseous hydrogen peroxide sterilisation process for prions...

A novel concept for ion blocking in gas-avalanche detectors was developed, comprising cascaded micro-hole electron multipliers with patterned electrodes for ion defocusing. This leads to ion blocking at the 10 level, in DC mode, in operation conditions adequate for TPCs and for gaseous photomultipliers. The concept was validated in a cascaded visible-sensitive gas avalanche photomultiplier oper...

On 1-4 June 2003, the Danish Institute of Agricultural Sciences (DIAS) hosted the International Symposium on Gaseous and Odour Emissions from Animal Production Facilities. This symposium can be considered a follow-up of the first special symposium on gaseous and odour emissions, held in 1997 in Vinkeloord, the Netherlands (Voermans and Monteny, 1997). The organizers of the 2003 symposium were S...

We study the migration and resonant capture of planetesimals in a planetary system consisting of a gaseous disc analogous to the primordial solar nebula and a Neptune-like planet. Using a simple treatment of the drag force we find that planetesimals are mainly trapped in the 3:2 and 2:1 resonances and that the resonant populations are correlated with the gaseous drag strength in a sense that th...

conclusions according to the results of the present study, aerobic exercise at moderate intensity and proper time can be considered as a special treatment to prevent diabetes complications and related disorders, particularly obesity. objectives this study aimed to determine whether in patients with type 2 diabetes, substrate oxidation and energy expenditure were affected by the type of intensit...

Except when otherwise noted, the free energy changes given for methanogenic reactions were calculated from the free energies of formation from the elements of the substrates and products with non-gaseous compounds at 1 M aqueous solution and gaseous compounds in the gaseous state at 1 atmosphere pressure (101 kPa). The free energy changes of formation were taken from Thauer eta/ . (1977). repor...

We analyzed the concentrations of polycyclic aromatic hydrocarbons (PAHs) in both particulate matter (PM) and the gaseous phase at 10 roadside sites in Hanoi, Vietnam. The average concentrations of 47 PAHs ( summation 47PAHs) were 63 +/- 82 ng m(-3) in PM and 480 +/- 300 ng m(-3) in the gaseous phase. The PAHs mainly originated from motorcycles without catalytic converters. The highest concentr...