Search Results - "Valters, K."

Hydroxylated and methyl sulfone PCB metabolites in adipose and whole blood of polar bear ( Ursus maritimus) from East Greenland by Sandala, G.M., Sonne-Hansen, C., Dietz, R., Muir, D.C.G., Valters, K., Bennett, E.R., Born, E.W., Letcher, R.J.

“…Persistent methyl sulfone (MeSO 2–) and hydroxylated (HO–) polychlorinated biphenyl (PCB) metabolites have emerged as important classes of environmental…”
Get full text

Optimization of bio-ethanol autothermal reforming and carbon monoxide removal processes by Markova, D., Bazbauers, G., Valters, K., Alhucema Arias, R., Weuffen, C., Rochlitz, L.

“…Experimental investigation of bio-ethanol autothermal reforming (ATR) and water-gas shift (WGS) processes for hydrogen production and regression analysis of…”
Get full text

Polybrominated Diphenyl Ethers and Hydroxylated and Methoxylated Brominated and Chlorinated Analogues in the Plasma of Fish from the Detroit River by Valters, Karlis, Li, Hongxia, Alaee, Mehran, D'Sa, Ivy, Marsh, Göran, Bergman, Åke, Letcher, Robert J

“…Novel classes and congeners of contaminant residues that are structurally analogous to polybrominated diphenyl ether (PBDE) flame retardants were assessed in…”
Get full text

Comparison of Polybrominated Diphenyl Ethers (PBDEs) and Polychlorinated Biphenyls (PCBs) in Lake Michigan Salmonids by Manchester-Neesvig, Jon B, Valters, Karlis, Sonzogni, William C

“…Polybrominated diphenyl ethers (PBDEs) have been used extensively over the past two decades as flame retardants in most types of polymers. Many measurements of…”
Get full text

Concentrations of Organochlorine Substances in Relation to Fish Size and Trophic Position:  A Study on Perch (Perca fluviatilis L.) by Olsson, Anders, Valters, Karlis, Burreau, Sven

“…The aim of this study was to evaluate the importance of trophic position as a determinant of the concentrations of organochlorine substances (OCS) in fish…”
Get full text

Feasibility of Bioethanol Production From Lignocellulosic Biomass by Aunina, Z, Bazbauers, G, Valters, K

“…The objective of the paper is to discuss the potential of cellulosic ethanol production processes and compare them, to find the most appropriate production…”
Get full text

DEVELOPMENT OF A SET OF CRITERIA AS AN ECO-DESIGN TOOL FOR EVALUATION OF ENVTRONMENTAL IMPACT OF MATERIAL CHOICE by Simanovska, J, Valters, K, Bazbauers, G

“…Eco-design is part of the product design process aimed at reducing the environmental impacts of products during their entire lifecycle. Nowadays, the…”
Get full text

OPTIMIZATION OF ETHANOL AUTOTHERMAL REFORMING PROCESS WITH CHEMICAL EQUILIBRIUM CALCULATIONS by Markova, D, Valters, K, Bazbauers, G

“…The dependence of carbon formation, hydrogen yield and efficiency of the ethanol autothermal reforming process on critical process factors is studied in the…”
Get full text

THE ENVIRONMENTAL IMPACTS OF A DESKTOP COMPUTER: INFLUENCE OF CHOICE OF FUNCTIONAL UNIT, SYSTEM BOUNDARY AND USER BEHAVIOUR by Simanovska, J, Steina, M, Valters, K, Bazbauers, G

“…The pollution prevention during the design phase of products and processes in environmental policy gains its importance over the other, more historically known…”
Get full text

Optimization of Ethanol Autothermal Reforming Process with Chemical Equilibrium Calculations by Markova, D., Valters, K., Bažbauers, G.

“…The dependence of carbon formation, hydrogen yield and efficiency of the ethanol autothermal reforming process on critical process factors is studied in the…”
Get full text

Development of a Set of Criteria as an Eco-Design Tool for Evaluation of Environmental Impact of Material Choice by Simanovska, J., Valters, K., Bažbauers, G.

“…Eco-design is part of the product design process aimed at reducing the environmental impacts of products during their entire lifecycle. Nowadays, the…”
Get full text

Hydroxylated and methyl sulfone PCB metabolites in adipose and whole blood of polar bear (Ursus maritimus) from East Greenland: Contaminants in the Greenland Environment: an update by SANDALA, G. M, SONNE-HANSEN, C, DIETZ, R, MUIR, D. C. G, VALTERS, K, BENNETT, E. R, BORN, E. W, LETCHER, R. J

Get full text

The Environmental Impacts of a Desktop Computer: Influence of Choice of Functional Unit, System Boundary and User Behaviour by Simanovska, J., Šteina, Māra, Valters, K., Bažbauers, G.

“…Vides politika aizvien vairak pieaug veriba piesarnojuma noversanai jau produkta un razosanas procesa dizaina (projektesanas) posma, salidzinot ar citu,…”
Get full text

Polychlorinated biphenyls and some pesticides in perch ( Perca Fluviatilis) from inland waters of Latvia by Valters, Karlis, Olsson, Anders, Asplund, Lillemor, Bergman, Åke

“…Polychlorinated biphenyls (PCBs), DDT - related substances, hexachlorocyclohexane (HCH) isomers and hexachlorobenzene (HCB) were analysed in perch ( Perca…”
Get full text

Contamination sources in Latvia. Levels of organochlorines in perch (Perca fluviatilis) from rivers Daugava and Lielupe by Valters, K, (Univ. of Latvia, Riga (Latvia). Dept. of Geographical and Earth Sciences)Olsson, A, Vitinsh, M, Bergman, Aa

“…This study aimed to search for potential sources of the polychlorinated biphenyls (PCBs) contributing to the PCB input to the Gulf of Riga, as part of the…”
Get full text

Methyl sulphonyl polychlorinated biphenyls and 2,2-bis(4-chlorophenyl)-1,1-dichlorethene in grey seal tissues determined by gas chromatography with electron capture detection and atomic emission detection by Janak, K, Becker, G, Colmsjo, A, Ostman, C, Athanasiadou, M, Valters, K, Bergman, A

“…The presence of 24 methyl sulphonyl polychlorinated biphenyl (PCB) congeners and 3-methyl sulphonyl 2,2-bis(4-chlorophenyl)-1,1-dichlorethene (MeSO4-DDE) in…”
Get full text

Methyl sulfonyl polychlorinated biphenyls and 2,2-bis(4-chlorophenyl)-1,1-dichlorethene in gray seal tissues determined by gas chromatography with electron capture detection and atomic emission detection by JANAK, K, BECKER, G, COLMSJÖ, A, ÖSTMAN, C, ATHANASIADOU, M, VALTERS, K, BERGMAN, A

“…The presence of 24 methyl sulfonyl polychlorinated biphenyl (PCB) congeners (MeSO sub(2)-CBs) and 3-methyl sulfonyl 2,2-bis(4-chlorophenyl)-1,1-dichlorethene…”
Get full text

ANALYSIS OF ORGANOHALOGEN SUBSTANCES IN LATVIAN FRESHWATER FISH - CONCENTRATIONS OF PCB AND DDE IN PERCH (Perca Fluviatilis) by VALTERS, KARLIS, OLSSON, ANDERS, ASPLUND, LILLEMOR, BERGMAN, ÅKE

Get full text