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Abstract
Quartz crystal microbalances have high mass sensitivities. Their application in gas sensing has been limited because they are required to have both high selectivity and reversibility. Yet by the inherent nature of their operation these properties are mutually exclusive. One approach to this problem is to use an array of quartz crystal microbalances. We have used an array of six coated quartz crystal microbalances for the classification of methanol, propan-1-ol, butan-1-ol, hexane, heptane and toluene. A novel classification scheme using fuzzy membership functions was found to be highly efficient.
Suarez, F. L., Levitt, M. D.: Intestinal gas. In: Feldman, M., Friedman, L. S., Sleisenger, M. H. Gastrointestinal and liver diseases. Philadelphia: Saunders, 2002, 155
References [1] Standard STN EN 1279-3 ( 2004 ), Glass in building. Insulating glass units . Part 3: Long term test method and requirements for gas leakage rate and
] C. Myren et al . Catalytic tar decomposition of biomass pyrolysis gas with a combination of dolomite and silica . Biomass and Bioenergy 23 ( 2002 ) 217 – 227 . [77
] Order of the Ministry of Fuel and Energy of Ukraine , No. 264 dated May 30, 2003, On approving methods for determining specific losses and production and technological costs of natural gas during its transportation by gas distribution
Abstract
A wide variety of liquid streams are generated as part of the process research and development effort. Frequently these streams are drummed off, either as intermediates that must be held for processing or as wastes that must be sent off-site for disposal. Because of the long times and low concentrations often involved, current thermoanalytical techniques were inadequate to detect the potential of streams to generate gas. A custom-made apparatus, the gas evolution test cell (GETC), was developed in the Merck Research Laboratories to measure the gas generation potential of various streams under precisely defined conditions, is the key innovation for the development of a quantitative gas-generation test method.
1 Introduction Natural gas hydrates are crystalline solids composed of water and gas. The gas molecules are trapped in water cavities that are composed of hydrogen-bonded water molecules [ 1 ]. Typical natural gas composition includes methane
application of pulsed corona processing to flue gas, NATO ASI Series , Vol. G, Part B, Springer-Verlag, Berlin, 1993. Civitano L. NATO ASI Series, Vol. G
1 Introduction Dust and gas explosions or flame spread occur in everyday life [ 1 ] and a wide range in industrial segments from wood industry to food or chemical applications and mining. Dust safety science
Nanocrystalline TiO2/SnO2 composites for gas sensors
An International Forum for Thermal Studies
Introduction Metal oxides, such as TiO 2 , SnO 2 , ZnO, WO 3 , and Fe 2 O 3 , are well known for their remarkable ability to change the electrical resistivity in response to oxidizing and reducing gases. Gas sensing properties
