Download or read book Liver Microsomal Mixed function Oxygenase Catalytic Activities in Fish from the Peace Athabasca and Slave River Drainages 1994 written by W. L. Lockhart and published by . This book was released on 1993 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis for Liver Mixed Function Oxygenase in Fish Peace Athabasca and Slave River Basins September to December 1994 written by W. Lyle Lockhart and published by The Study. This book was released on 1996 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis for Liver Mixed Function Oxidase in Fish Upper Athabasca River 1992 written by W. Lyle Lockhart and published by . This book was released on 1996 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aquatic fauna of northern Alberta rivers are exposed to contaminants from municipal and industrial sources, including pulp mills. Studies of sub-lethal effects such as increased levels of enzyme activity can indicate an early response to environmental stress in these fauna. This paper reports on a project conducted to examine mixed function oxygenase activity in fish collected from six sites on the upper Athabasca River, upstream and downstream from the Hinton bleached kraft mill. The investigators applied two enzyme assays to fish liver samples collected from mountain whitefish, longnose sucker, northern pike, and white sucker. Enzyme activities were compared with contaminant residue levels and sex steroid hormones reported for the same fish in other related studies. Results presented compare levels of chlorinated dioxin and furan residues in the fish with the site-by-site pattern of enzyme activity.
Download or read book Accumulation of Fish Mixed Function Oxygenase Inducers by Semipermeable Membrane Devices in River Water and Effluents Athabasca River August and September 1994 written by Joanne Louise Parrott and published by . This book was released on 1996 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reports on a study that used semipermeable membrane devices (SPMDs) to identify industrial effluents along the Athabasca River system that induce mixed function oxygenase (MFO) activity in fish cell lines. These SPMDs provided samples of known exposure time in effluents and river waters by simultaneously sampling the effluent stream and the river upstream and downstream of the mixing zone at each site. The investigators deployed the SPMDs for two weeks at one major town and five industrial wastewater sites (four pulp mills and one oil sands facility) on the Athabasca, and at one pulp mill on the Lesser Slave River. They tested SPMD extracts for MFO activity using cell culture techniques in top minnow (Poeciliopsis lucida) hepatoma cells. Results presented include comparisons of MFO induction potency between different sampling sites and between type of effluent source.
Download or read book Analyses for Circulating Gonadal Sex Steroids and Gonad Morphology in Fish Peace Athabasca and Slave River Basins September to December 1994 written by Scott Barrie Brown and published by The Study. This book was released on 1996 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this study was to examine reproductive indices in fish collected from the Peace, Athabasca, and Slave rivers and their major tributaries. The fish species targeted for collection and analyses were burbot, northern pike, longnose sucker, and flathead chub. Biochemical and histological approaches included analysing levels of gonadal sex steroid hormones, measuring gonad morphology, and estimating fecundity. Results are organised in to reference (upstream locations and tributaries receiving no inputs from pulp mills), near-field (within 100 kilometres downstream from a pulp mill source), and far-field (over 100 kilometres downstream) groups.
Download or read book Analyses of Dehydroretinol Retinol Retinyl Palmitate and Tocopherol in Fish Peace Athabasca and Slave River Basins September to December 1994 written by Scott Barrie Brown and published by The Study. This book was released on 1996 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vitamin A (retinoids) and E (tocopherol) have received increasing attention as possible indicators of exposure to a variety of environmental pollutants. This study examines vitamin A and E indices in fish collected from northern Alberta rivers, where fish are exposed to a variety of industrial effluents, as part of a multi-faceted study into altered fish physiological function due to environmental contaminants. The fish species targeted for collection were burbot, northern pike, and longnose sucker. The investigators conducted biochemical analyses in the laboratory to determine levels of retinol, dehydroretinol, retinyl palmitate (three storage forms of vitamin A), beta carotene (precursor form of vitamin A), and tocopherol in fish livers. For comparison, results are organised into reference (upstream locations and tributaries receiving no input from pulp mills), near-field (within 100 kilometres downstream from a pulp mill source), and far-field (over 100 kilometres downstream) groups, where sample sizes were adequate.
Download or read book Analysis for Liver Mixed Function Oxidase in Fish Upper Athabasca 1992 written by W.L. Lockart and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environmental Fate and Effects of Pulp and Paper written by Mark R. Servos and published by CRC Press. This book was released on 2020-02-03 with total page 724 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, there have been emerging concerns regarding the fate and effects of pulp and paper mill effluents on the environment. Countries throughout the world are focusing attention on the implementation of regulatory and monitoring programs. In response, industry has begun to implement a variety of process and treatment technologies designed to minimize or eliminate the potential impacts. Environmental Fate and Effects of Pulp and Paper Mill Effluents explores the most active and critical current research and experimentation from around the world. This comprehensive overview examines the identity and origin of chemicals in pulp mill effluents, environmental fate of chemicals from pulp and paper mills, bioaccumulation of substances from pulp mills to fish and wildlife, field and laboratory studies of biochemical and whole organism responses associated with pulp and paper effluents, integrated monitoring and future research, and policy directions of this rapidly evolving field. Written by prominent scientists from around the world with contributions from industry, government, and academia, this important new book provides a balanced global perspective of the recent scientific findings and the challenges being faced in the immediate future.
Download or read book Aquatic Toxicity of Pulp and Paper Mill Effluent written by D. McLeay and Associates and published by . This book was released on 1987 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Literature review and evaluation of current knowledge, concerns and monitoring techniques associated with the aquatic toxicity of pulp and papermill effluents. Topics covered include: toxic constituents in milleffluents, receiving waters and sediments; laboratory monitoring for toxicity; toxic effects of mill effluents within receiving waters; bioaccumulation and elimination of organic constituents in mill effluents; and bioassay tests for predicting the impact of wholemill effluents in the aquatic environment. International sources are included.
Download or read book Crossword Solver written by Anne Stibbs and published by Bloomsbury Pub Limited. This book was released on 2000 with total page 423 pages. Available in PDF, EPUB and Kindle. Book excerpt: An aid to solving crosswords. It contains over 100,000 potential solutions, including plurals, comparative and superlative adjectives, and inflections of verbs. The list extends to first names, place names and technical terms, euphemisms and compound expressions, as well as abbreviations.
Download or read book Sediment Quality Assessment written by Graeme Batley and published by CSIRO PUBLISHING. This book was released on 2016-02-01 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contaminated sediments represent an ongoing threat to the health of aquatic ecosystems. The assessment of sediment quality is, therefore, an important concern for environmental regulators. Sediment quality guidelines are now well established in regulatory frameworks worldwide; however, practical guidance that covers all of the key aspects of sediment quality assessment is not readily available. In 2005, CSIRO published its highly cited Handbook for Sediment Quality Assessment. In the ensuing period, the science has advanced considerably. This practical guide is a revised and much expanded second edition, which will be a valuable tool for environmental practitioners. Written by experts in the field, it provides coverage of: sediment sampling; sample preparation; chemical analysis; ecotoxicology; bioaccumulation; biomarkers; and ecological assessment. In addition, detailed appendices describe protocols for many of the tests to be used.
Download or read book Environmental Metabolomics written by Diana Alvarez-Munoz and published by Elsevier. This book was released on 2020-06-03 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmental Metabolomics Applications in Field and Laboratory Studies: From the Exposome to the Metabolome presents an overview of the current state of aquatic environments and problems caused by human pressure and daily life. The presence of contaminants in nature and their effects are evaluated, along with recommendations for preservation. This book not only shows readers how to implement techniques, it also guides them through the process. As metabolomics becomes a more routine technique for environmental studies and future perspectives, a guide for validation and globalization of current approaches is needed. Presents relevant and reliable information on the use of different analytical techniques for establishing the environmental metabolomics of polluted systems Includes a critical review of each central topic in every chapter, together with a bibliography and future trends Provides, for the first time, a global opinion and guide for achieving standardized results
Download or read book Wildlife Ecotoxicology written by John E. Elliott and published by Springer Science & Business Media. This book was released on 2011-08-27 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many books have now been published in the broad field of environmental toxicology. However, to date, none of have presented the often fascinating stories of the wildlife science, and the steps along the way from discovery of problems caused by environmental pollutants to the regulatory and non-regulatory efforts to address the problems. This book provides case by case examinations of how toxic chemical effects on wildlife have brought about policy and regulatory decisions, and positive changes in environmental conditions. Wild animal stories, whether they are about the disappearance of charismatic top predators, or of grossly deformed embryos or frogs, provide powerful symbols that can and have captured the public's imagination and have resulted in increased awareness by decision makers. It is the intent of this book to present factual and balanced overviews and summaries of the science and the subsequent regulatory processes that followed to effect change (or not). We cover a variety of chemicals and topics beginning with an update of the classic California coastal DDT story of eggshell thinning and avian reproduction to more recent cases, such as the veterinarian pharmaceutical that has brought three species of Asian vultures to the brink of extinction. Researchers, regulators, educators, NGOs and the general public will find valuable insights into the processes and mechanisms involved both in environmental scientific investigation and in efforts to effect positive change.
Download or read book The Bleaching of Pulp written by Technical Association of the Pulp and Paper Industry. Pulp Bleaching Committee and published by . This book was released on 2012-08-30 with total page 798 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Atrazine in North American Surface Waters written by Jeffrey M. Giddings and published by SETAC. This book was released on 2005 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Multiple Stressors A Challenge for the Future written by Carmel Mothersill and published by Springer Science & Business Media. This book was released on 2007-08-20 with total page 483 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ecotoxiclogical risk from multiple stressors covers any situation where org- isms are exposed to a combination of environmental stressors. These include physical and chemical pollutants as well as other stressors such as parasites and environmental impact (e. g. , climate change or habitat loss). The combi- tion of stressors can result in increased risk to organisms (either additive or synergistic effects) or decreased effects (protective or antagonistic effects). The multiple stressor challenge is an international, multi-disciplinary problem requiring an international, multi-disciplinary approach. The c- rent approach to multiple stressors is to examine one stressor at a time and assume additivity. Little work has been done on combinations of stressors such that potential interactions can be determined. The problem is very complex. Multiple stressors pose a whole spectrum of challenges that range from basic science to regulation, policy and gove- ance. The challenges raise fundamental questions about our understanding of the basic biological response to stressors, as well as the implications of those uncertainties in environmental risk assessment and management. In addition to the great breadth, there is also great depth in the research ch- lenges, largely due to the complexity of the issues. From a basic science point of view, many of the mechanisms and processes under investigation are at the cutting edge of science — involving new paradigms such as genomic ins- bility and bystander effects.
Download or read book Section Rock drill written by Ezra Pound and published by . This book was released on 1956 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: The most recent portion of the long poem which has occupied him for the last twenty years.
