Results 101 to 110 of about 8,462 (221)

Perfluorocarbon Enhanced Glasgow Oxygen Level Dependent (GOLD) magnetic resonance metabolic imaging identifies the penumbra following acute ischemic stroke [PDF]

, 2018
The ability to identify metabolically active and potentially salvageable ischaemic penumbra is crucial for improving treatment decisions in acute stroke patients.
Brennan, David, Deuchar, Graeme A., Holmes, William M., Macrae, I. Mhairi, Santosh, Celestine, Shaw, Martin   +5 more
core   +1 more source

Use of the Electronic Nose as a Screening Tool for the Recognition of Durum Wheat Naturally Contaminated by Deoxynivalenol: A Preliminary Approach

Sensors, 2011
Fungal contamination and the presence of related toxins is a widespread problem. Mycotoxin contamination has prompted many countries to establish appropriate tolerance levels. For instance, with the Commission Regulation (EC) N.
Vittorio Dell’Orto, Luciano Pinotti, Giovanni Savoini, Carlo Polidori, Mauro Zaninelli, Oreste Zecca, Anna Campagnoli, Federica Cheli   +7 more
doaj   +1 more source

Characterization and Quantification of Livestock Odorants using Sorbent Tube Sampling and Thermal Desorption coupled with Multidimensional Gas Chromatography–Mass Spectrometry–Olfactometry (TD-MDGC-MS-O) [PDF]

, 2008
Characterization and quantification of livestock odorants is one of the most challenging analytical tasks because odor-causing gases are very reactive, polar and often present at very low concentrations in a complex matrix of less important or irrelevant
Anderson-Bereznicki, Sarah, Cai, Lingshuang, Caraway, Edward, Celen, Ipek, Clanton, Charles, Heathcote, Katherine, Heber, Albert, Hetchler, Brian, Hoff, Steven, Hoff, Steven, Jacobson, Larry, Koziel, Jacek, Koziel, Jacek, Parker, David, Schmidt, David, Zhang, Shicheng   +15 more
core   +3 more sources

Boundary layer concentrations and landscape scale emissions of volatile organic compounds in early spring

, 2006
International audienceBoundary layer concentrations of several volatile organic compounds (VOC) were measured during two campaigns in springs of 2003 and 2006.
Haapanala, S., Hakola, H., Hellén, H., Janson, R., Kulmala, M., Laakso, L., Lihavainen, H., O'Dowd, C., Rinne, J.   +8 more
core   +4 more sources

Evaluation of Tenax-TA Adsorption for the Measurement of Toxic Organic Compounds in Workplace Air Using Thermodesorption/Gas Chromatography.

Analytical Sciences, 1997
A method for the measurement of toluene, m,p,o-xylene, styrene and iso, n-butylacetate in workplace air of surface coating industries was developed. The target compounds were adsorbed on Tenax-TA sampling tubes then thermally desorbed via a homemade split device prior to cryotrapping and analyzed by gas chromatograph with flame ionization detector. All
Kuang-Ling YANG, Jiunn-Guang Lo
openaire   +2 more sources

Response of BVOC emissions from Fraxinus excelsior to biotic stress [PDF]

, 2010
C
Amelynck, C, Dewulf, Jo, Joó, Éva, Müller, JF, Pokorska, Olga, Schoon, N, Steppe, Kathy, Van Langenhove, Herman   +7 more
core   +1 more source

Carbon-Based FET-Type Gas Sensor for the Detection of ppb-Level Benzene at Room Temperature

Chemosensors
Benzene, as a typical toxic gas and carcinogen, is an important detection object in the field of environmental monitoring. However, it remains challenging for the conventional resistance-type gas sensor to effectively detect low-concentration (ppb-level)
Risheng Cao, Zhengyu Lu, Jinyong Hu, Yong Zhang   +3 more
doaj   +1 more source

Biodisponibilidad. Concepto y cuantificación. Aplicación a emplazamientos contaminados con hidrocarburos policíclicos aromáticos [PDF]

, 2003
39 páginas.-- 25 figuras.-- 2 tablas.-- 36 referencias. Memoria del XL Curso Internacional de Edafología y Biología Vegetal, 2003Director del trabajo: Ortega Calvo, J. J.La presencia de contaminantes en la naturaleza representa una amenanza para la salud
Gómez Lahoz, C.
core  

Importance of Musty Odour Character in the Emissions from Anaerobically Stabilized Dewatered Biosolids. Towards the Identification of Unknown Odour Components

Chemical Engineering Transactions, 2022
Odours from stabilized anaerobically digested wastewater sludge – biosolids can cause local community odorous impact. Contributions from some volatile organic compounds (VOCs) to nuisance odours are not well understood.
Radoslaw J. Barczak, Ruth M. Fisher, Richard M. Stuetz   +2 more
doaj  

Failure of the three-way catalyst (TWC) introduces “super emitters”

Environment International
Vehicle exhaust is one of the major organic sources in urban areas. Old taxis equipped with failed three-way catalysts (TWCs) have been regarded as “super emitters”. Compressed natural gas (CNG) is a regular substitution fuel for gasoline in taxis.
Xinping Yang, Miao Tian, Yunjing Wang, Kai Song, Kai Li, Jiaju Liu, Yi Wen, Junfang Wang, Hang Yin, Yan Ding   +9 more
doaj   +1 more source