Results 51 to 60 of about 973,075 (210)

Optimized Feature Extraction for Temperature‐Modulated Gas Sensors [PDF]

Journal of Sensors, 2009
One of the most serious limitations to the practical utilization of solid‐state gas sensors is the drift of their signal. Even if drift is rooted in the chemical and physical processes occurring in the sensor, improved signal processing is generally considered as a methodology to increase sensors stability.
Vergara, A, MARTINELLI, EUGENIO, Llobet, E, D'AMICO, ARNALDO, DI NATALE, CORRADO   +4 more
openaire   +3 more sources

Measurement of representative landfill gas migration samples at landfill perimeters: a case study [PDF]

, 2009
This paper describes the development of a fully integrated autonomous system based on existing infrared sensing technology capable of monitoring landfill gas migration (specifically carbon dioxide and methane) at landfill sites.
Beirne, Stephen, Diamond, Dermot, Fay, Cormac, Kiernan, Breda M.   +3 more
core  

STUDY REGARDING THE DESTABILIZATION OF STABLE EMULSIONS FROM SUPLAC AREA

Scientific Study & Research: Chemistry & Chemical Engineering, Biotechnology, Food Industry, 2016
Emulsions from the wells in the Suplac area create great difficulties in removing water due to their specifications. A complex study was conducted in order to eliminate water from emulsions using alkaline-surfactants.
IULIANA VERONICA GHEŢIU, IOANA GABRIELA STAN, MARIA GEORGETA POPESCU   +2 more
doaj  

A Glycerol Acetylation Study on a Tin Ferrite Nanocatalyst

ChemEngineering
In this study, a novel magnetic nanocatalyst based on tin ferrite (SnFe2O4) was synthesized via a chemical co-precipitation method and thoroughly characterized using XRD, SEM, TGA-DTG, BET, FTIR, and FTIR-pyridine techniques.
Rami Doukeh, Andreea-Cătălina Joe, Ion Onuțu, Iuliana Veronica Ghețiu, Marian Băjan, Gabriel Vasilievici, Dorin Bomboș, Abeer Baioun, Cașen Panaitescu, Ionuț Banu, Romuald Győrgy   +10 more
doaj   +1 more source

Determining the distribution of triclosan and methyl triclosan in estuarine settings [PDF]

, 2014
We have developed a method for the analysis of two sewage-derived contaminants: triclosan (TCS), an antibacterial agent, and methyl triclosan (MTCS), a TCS metabolite.
Agüera, Azzouz, Balmer, Baltussen, Beltran, Bester, Buth, Canosa, Canosa, Cantwell, Casas-Ferreira, Chen, Chu, Cottell, Cueva-Mestanza, Eduardo González-Mazo, El Rayis, Fernandes, Fiss, Gilart, Giordano, Göbel, Heidler, Kantiani, Kawaguchi, Kuster, Lara-Martín, Lara-Martín, Lara-Martín, Lindström, Lozano, Marina G. Pintado-Herrera, Miller, Pablo A. Lara-Martín, Pedrouzo, Petrovic, Prieto, Pérez-Carrera, Quintana, Silva, Sánchez-Brunete, Ternes, Wu, Zaroogian, Zhao   +44 more
core   +2 more sources

Slit and integral-field optical spectroscopy of the enigmatic quasar HE0450-2958 [PDF]

, 2008
Interest in the quasar HE0450-2958 arose following the publication of the non-detection of its expected massive host, leading to various interpretations. This article investigates the gaseous and stellar contents of the system through additional VLT/FORS
Baldwin, Courbin, Courbin, de Grijp, Djorgovski, Eigenbrod, Eigenbrod, F. Courbin, Feain, G. Letawe, Haehnelt, Hoffman, Kim, Letawe, Letawe, Low, Magain, Magain, Merritt, P. Magain, Veilleux, Zhou   +21 more
core   +1 more source

An Integrated Approach to Design Methane Drainage Boreholes in Post-Mining Areas of an Active Coal Mine: A Case Study from the Pniówek Coal Mine

Applied Sciences
In response to the imperative to mitigate methane—one of the most potent greenhouse gases—this study proposes and tests an integrated workflow for designing methane drainage boreholes targeting post-mining areas in an active underground coal mine ...
Weronika Kaczmarczyk-Kuszpit, Małgorzata Słota-Valim, Aleksander Wrana, Radosław Surma, Artur Badylak, Renata Cicha-Szot, Mirosław Wojnicki, Alicja Krzemień, Zbigniew Lubosik, Grzegorz Leśniak   +9 more
doaj   +1 more source

Network Design Mode of In-Seam Gas Extraction Parameters Using Mathematical Modelling—Take Tangan Colliery as an Example

Geofluids, 2020
Gas extraction is a practical and effective way to guarantee mining-process safety and deliver greater environmental benefits through reducing greenhouse gas emissions and increase the supply of a valuable clean gas resource.
Tong-qiang Xia, Ke Gao, Hong-yun Ren, Jiao-fei He, Zi-long Li   +4 more
doaj   +1 more source

Soil moisture by extraction and gas chromatography [PDF]

, 1973
To determine moisture content of soils rapidly and conveniently extract moisture with methanol and determine water content of methanol extract by gas chromatography.
Carle, G. C., Merek, E. L.
core   +1 more source

Characterizing gas flow from aerosol particle injectors

, 2017
A novel methodology for measuring gas flow from small orifices or nozzles into vacuum is presented. It utilizes a high-intensity femtosecond laser pulse to create a plasma within the gas plume produced by the nozzle, which is imaged by a microscope ...
Horke, Daniel, Küpper, Jochen, Roth, Nils, Worbs, Lena   +3 more
core   +2 more sources