نتایج جستجو برای: environmental samples

تعداد نتایج: 767394  

2013
Min-Soo Kim Tae Woong Whon Jin-Woo Bae

The introduction of metagenomics into the field of virology has facilitated the exploration of viral communities in various natural habitats. Understanding the viral ecology of a variety of sample types throughout the biosphere is important per se, but it also has potential applications in clinical and diagnostic virology. However, the procedures used by viral metagenomics may produce technical...

2017
John Headley Kerry Peru Adeola Adenugba Dena McMartin

Alkanolamines are anthropogenic compounds used extensively not only in the processing of sour natural gas but in other operations such as the petrochemical and fossil-fuel fired industries to reduce and prevent the emission of green house gases into the environment. Alkanolamines also find uses as corrosion inhibitors, emulsifying agents and in pharmaceutical formulations (Dobberpuhl and Johnso...

2013
Neetu Bansal James Vaughan Amiel Boullemant Tony Leong

Mercury has long been recognised as a neurotoxin element for many decades and with its compounds being extremely toxic, is ranked third in the ‘priority list of hazardous substance’ by the United States comprehensive environmental response, compensation, and liability act. In different samples, mercury can exist as either its inorganic or organic forms and this paper will review the methods for...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه - دانشکده علوم 1391

nanotechnology is a general term which is related with field of all advanced science term that generally predicates with all modern technologies which consider nanoscales. improvement in the quality of products by adding some nanoparticles and study of their behavior in the presence of these nanoparticles have been obtained in many researches. on the other hand numerous demands for sowing ...

2004
DOUGLAS C. BAXTER WOLFGANG FRECH

Chairman: 1989-93 D. E. Wells (UK); Secretaly: 1989-93 D. G. Westmoreland (USA); Titular Members: K. Biemann (USA; 1989-91); W. H. Gries (FRG; 1989-91); M. J.-F. Leroy (France; 1989-93); M. W. Linscheid (FRG; 1991-93); M. Morita (Japan; 1989-93); M. J. Pellin (USA; 1991-93); B. Ya. Spivakov (Russia; 1989-93); Associate Members: S . Caroli (Italy; 1991-93); W. P. Cofino (Netherlands; 1989-93); R...

2000

1.1 This gas chromatographic method is designed to determine the concentrations in soil and water of petroleum hydrocarbons from nhexane (C6) to n-pentatriacontane (C 35); an approximate boiling point range from 70C to 500C. This includes the gasoline, diesel range, and some portions of heavier fuels and lubricating oils. This method also describes the separation of the petroleum hydrocarbons i...

2002
Don L. Stevens Anthony R. Olsen

The spatial distribution of a natural resource is an important consideration in designing an efficient survey or monitoring program for the resource. We review a unified strategy for designing probability samples of discrete, finite resource populations, such as lakes within some geographical region; linear populations, such as a stream network in a drainage basin; and continuous, two-dimension...

2001
Jin Qian

Qian, J. 2001. Mercury Species in Environmental Samples Studied by Spectroscopic Methods. Doctor k dissertation. ISSN 1401-6230, ISBN 91-576-6085-9. In this thesis, attention is focused on the determination, stability, reaction, and chemical association of mercury species in various types of environmental samples. Capillary gas chromatography (GC) was coupled to a number of systems for mercury ...

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