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Author: Patricia Cornwell
Publisher: Penguin
ISBN: 1429541768
Category : Fiction
Languages : en
Pages : 257
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Book Description
Kay Scarpetta finds herself pitted against a possible bioterrorist in this suspense-filled read from #1 New York Times bestselling author Patricia Cornwell. When a woman turns up dismembered in a landfill, Scarpetta initially suspects the work of a serial killer she’s been tracking. But her investigation turns far more dangerous when she realizes the victim’s skin is covered in an unusual rash—and Scarpetta herself may have just been exposed to a deadly virus.
Author: Patricia Cornwell
Publisher: Penguin
ISBN: 1429541768
Category : Fiction
Languages : en
Pages : 257
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Book Description
Kay Scarpetta finds herself pitted against a possible bioterrorist in this suspense-filled read from #1 New York Times bestselling author Patricia Cornwell. When a woman turns up dismembered in a landfill, Scarpetta initially suspects the work of a serial killer she’s been tracking. But her investigation turns far more dangerous when she realizes the victim’s skin is covered in an unusual rash—and Scarpetta herself may have just been exposed to a deadly virus.
Author: Leonard Goldberg
Publisher: Berkley
ISBN: 9780451408723
Category : Fiction
Languages : en
Pages : 420
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Book Description
"A lethal microbe, a brutal murder, and a sentient iceberg menace coolly competent forensic pathologist Joanna Blaylock...zingy." --Kirkus Reviews "The stuff of nightmares." --Library Journal "Rushes along at a brisk clip." --Chicago Tribune "Exciting." --Booklist
Author: Andreas Fahlman
Publisher: Frontiers E-books
ISBN: 2889191001
Category :
Languages : en
Pages : 155
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Book Description
Breath-hold diving marine mammals are able to remain submerged for prolonged periods of time and dive to phenomenal depths while foraging. A number of physiological, biochemical and behavioral traits have been suggested that enable this life style, including the diving response, lung collapse, increased O2 stores, diving induced hypometabolism, and stroke-and-glide behavior to reduce dive metabolic cost. Since the initial studies by Scholander in the 1940‘s, when most of the physiological and biochemical traits were suggested, few have received as much study as the diving response and O2 management. The calculated aerobic dive limit (cADL) was an important concept which allowed calculation of the aerobic dive duration, and was defined as the total O2 stores divided by the rate of O2 consumption (metabolic rate). The total O2 stores have been defined for several species, and studies in both forced and freely diving animals have refined the metabolic cost of diving. Currently there appears to be little consensus about whether marine mammals perform a significant proportion of dives exceeding the cADL or not and there may be large differences between species. The diving response is a conserved physiological trait believed to arise from natural selection. The response includes diving-induced bradycardia, peripheral vasoconstriction, and altered blood flow distribution. While the response results in reduced cardiac work, it is not clear whether this is required to reduce the overall metabolic rate. An alternate hypothesis is that the primary role of the diving bradycardia is to regulate the degree of hypoxia in skeletal muscle so that blood and muscle O2 stores can be used more efficiently. Scholander suggested that the respiratory anatomy of marine mammals resulted in alveolar collapse at shallow depths (lung collapse), thereby limiting gas exchange. This trait would limit uptake of N2 and thereby reduce the risk of inert gas bubble formation and decompression sickness. In his initial treatise, Scholander suggested that alveolar collapse probably made inert gas bubble formation unlikely during a single dive, but that repeated dives could result in significant accumulation that could be risky. Despite this, lung collapse has been quoted as the main adaptation by which marine mammals reduce N2 levels and inert gas bubble formation. It was surprising, therefore, when recent necropsy reports from mass stranded whales indicated DCS like symptoms. More recent studies have shown that live marine mammals appear to experience bubbles under certain circumstances. These results raise some interesting questions. For example, are marine mammals ever at risk of DCS, and if so could N2 accumulation limit dive performance? While an impressive number of studies have provided a theoretical framework that explains the mechanistic basis of the diving response, and O2 management, many questions remain, some widely-accepted ideas actually lack sufficient experimental confirmation, and a variety of marine mammal species, potentially novel models for elucidating new diving adaptations, are understudied. The aim of this Frontiers Topic is to provide a synthesis of the current knowledge about the physiological responses of marine mammals that underlie their varied dive behavior. We also include novel contributions that challenge current ideas and that probe new hypotheses, utilize new experimental approaches, and explore new model species. We show that the field has recently entered a phase of renewed discovery that is not only unraveling more secrets of the natural diving response but will drive new applications to aid human exploration of the ocean depths. We also welcome comparative analyses, especially contributions that compare marine mammals with human divers.
Author: Brooke Maslo
Publisher: Cambridge University Press
ISBN: 1139867563
Category : Nature
Languages : en
Pages : 415
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Book Description
Coastal ecosystems are centres of high biological productivity, but their conservation is often threatened by numerous and complex environmental factors. Citing examples from the major littoral habitats worldwide, such as sandy beaches, salt marshes and mangrove swamps, this text characterises the biodiversity of coastline environments and highlights important aspects of their maintenance and preservation, aided by the analysis of key representative species. Leaders in the field provide reviews of the foremost threats to coastal networks, including the effects of climate change, invasive species and major pollution incidents such as oil spills. Further discussion underscores the intricacies of measuring and managing coastline species in the field, taking into account the difficulties in quantifying biodiversity loss due to indirect cascading effects and trophic skew. Synthesising the current state of species richness with present and projected environmental pressures, the book ultimately establishes a research agenda for implementing and improving conservation practices moving forward.
Author:
Publisher: Academic Press
ISBN: 0080567886
Category : Science
Languages : en
Pages : 475
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Book Description
Advances in Genetics
Author: United States. Environmental Protection Agency. Office of Pesticide Programs
Publisher:
ISBN:
Category : Pesticides
Languages : en
Pages : 92
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Book Description
Author: James Higham
Publisher: Cambridge University Press
ISBN: 1139915495
Category : Science
Languages : en
Pages : 425
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Book Description
Within little more than a generation, whale-watching has been subject to global industrial development. It has been portrayed by destinations and business operators, and advocated by environmental groups, as a sustainable activity and an alternative to whaling. However, in recent years the sustainability of these activities has increasingly been questioned, as research shows that repeated disturbance by boat traffic can severely disrupt critical behaviours of cetaceans in the wild. Bringing together contributions by international experts, this volume addresses complex issues associated with commercial whale-watching, sustainable development and conservation of the global marine environment. It highlights widely expressed concerns for the failure of policy, planning and management and pinpoints both long-standing and emerging barriers to sustainable practice. Featuring numerous case studies, the book provides critical insights into the diverse socio-cultural, political, economic and ecological contexts of this global industry, highlighting the challenges and opportunities that arise along the pathways to sustainability.
Author:
Publisher:
ISBN:
Category : Cancer
Languages : en
Pages : 40
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Book Description
Author:
Publisher:
ISBN:
Category : Delegated legislation
Languages : en
Pages : 396
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Book Description
Author:
Publisher: Academic Press
ISBN: 0080922015
Category : Medical
Languages : en
Pages : 2407
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Book Description
The Handbook of Pesticide Toxicology is a comprehensive, two-volume reference guide to the properties, effects, and regulation of pesticides that provides the latest and most complete information to researchers investigating the environmental, agricultural, veterinary, and human-health impacts of pesticide use. Written by international experts from academia, government, and the private sector, the Handbook of Pesticide Toxicology is an in-depth examination of critical issues related to the need for, use of, and nature of chemicals used in modern pest management. This updated 3e carries on the book's tradition of serving as the definitive reference on pesticide toxicology and recognizes the seminal contribution of Wayland J. Hayes, Jr., co-Editor of the first edition. - Presents a comprehensive look at all aspects of pesticide toxicology in one reference work. - Clear exposition of hazard identification and dose response relationships in each chapter featuring pesticide agents and actions - All major classes of pesticide considered - Different routes of exposure critically evaluated
