813 research outputs found

    Pathogenic Potential to Humans of Bovine Escherichia coli O26, Scotland

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    Escherichia coli O26 and O157 have similar overall prevalences in cattle in Scotland, but in humans, Shiga toxin–producing E. coli O26 infections are fewer and clinically less severe than E. coli O157 infections. To investigate this discrepancy, we genotyped E. coli O26 isolates from cattle and humans in Scotland and continental Europe. The genetic background of some strains from Scotland was closely related to that of strains causing severe infections in Europe. Nonmetric multidimensional scaling found an association between hemolytic uremic syndrome (HUS) and multilocus sequence type 21 strains and confirmed the role of stx<sub>2</sub> in severe human disease. Although the prevalences of E. coli O26 and O157 on cattle farms in Scotland are equivalent, prevalence of more virulent strains is low, reducing human infection risk. However, new data on E. coli O26–associated HUS in humans highlight the need for surveillance of non-O157 enterohemorrhagic E. coli and for understanding stx<sub>2</sub> phage acquisition

    Manual of seed handling in genebanks

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    This manual and its accompanying self-learning module provide detailed procedural guidlines and lessons for staff who do not have the opportinity to attend courses on seed conservation and genebank management. It focuses on seed handling procedures and does not cover documentation, collecting or characterization procedures in great detail. The manual discusses and presents some of the common procedures in handling seeds in genebanks. These steps include germplasm acquisition and registration; seed cleaning; seed moisture content determination and drying; seed quality testing which includes viability testing; health testing, and testing for inadvertent introduction of transgenes; seed packaging and storage; germplasm distribution; and the last one is germplasm monitoring and regeneration. At the end of the manual one finds annex on international policies and frameworks influencing access to and exchange of germplasm; serological methods for detecting plant pathogens; glossary; and specialized equipment for gene banks. And the module is a stand-alone self -learning tool organised into units and lessons and it is intended to be used in conjuction with the manual. Each lesson includes learning objectives, a description of procedures; learning checks to assess understanding, problem scenarios for applying learning to a pratctical situation and lesson summaries. In addition each lesson contains a glossary of commonly used genebank terms, references to further reading, and detailed photographs to illustrate the steps in seed-handling procedure

    Assessment of Alternative Energy/Environment Futures for Austria, 1977-2015: An Executive Summary

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    This report was prepared to complement a presentation made October 25, 1977 at IIASA. The presentation, titled "An Executive Briefing Session", was designed to present the final results of a thirteen-month study of the Austrian Energy/Environment System to leaders in Austrian government, industry, and science. This written documentation of the results (of which a German translation is also available) presents in a brief form the final conclusions of this study. The study results provide a comprehensive spatial and sectoral description of Austrian energy consumption, and examine alternative energy and environmental policy strategies. This report, however, is only a summary and a more complete description will appear in Research Report form in 1978

    Assessment of Alternative Energy/Environment Futures for Austria: 1977-2015

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    The Austrian Regional Energy/Environment Study is the fourth in a series of IIASA studies on regional energy and environmental systems. The regions studied previously were the German Democratic Republic, the Rhone-Alpes Region in France and the state of Wisconsin in the U.S.A. The Austrian case study, regional in scope, complements the work of the IIASA Energy Systems Program which focuses primarily on global aspects of energy. This report presents the major results of the l5-month, Austrian case study, which examines alternative energy futures and strategies for Austria and some of their environmental implications. A secondary objective is the development of appropriate concepts and methods for energy/environment management and policy design in Austria

    Assessment of Alternative Energy/Environment Futures for Austria 1977-2015: Final Summary Report

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    This study had two primary objectives: (1) To examine alternative energy futures and strategies for Austria and to consider some of their environmental implications. (2) To investigate and apply appropriate concepts and . methodologies for energy/environment management and policy design in Austria. The establishment of these objectives was based upon the conviction that in Austria, as in most regions and nations of the world, there is an urgent need for the development and application of methods for studying regional energy systems and for testing the impact of alternative policies. In view of the major role which energy plays in the determination of environmental quality, this study was designed to aid in the integration of energy and environmental management from a systems perspective. "Regional," in the context of our previous studies, is not strictly defined as subnational or as a specific class of geographic units; rather, it refers to a region, appropriately bounded so that it is possible to speak of energy and environmental systems from a physical, socioeconomic, or administrative perspective, or from all three. At the beginning of this study, we intended to limit its scope to a selected few Austrian Lander (states); we quickly realized that Austria's size and vigorous interregional links precluded anything less than a national study

    The Wisconsin-IIASA Set of Energy/Environment (WISE) Models for Regional Planning and Management: An Overview

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    This report presents an overview of the analytical framework and quantitative methods used in the IIASA case studies on Regional Energy/Environment Management and Planning. Its purpose is to summarize the structure of the models, to provide a complete listing of the sources of more detailed model and data descriptions, and to indicate how the models are integrated to provide a foundation for regional energy/environment policy maker analysis. The audience for the report includes managers, planners, technical advisors, and modelers. The set of models used in the research project encompasses socioeconomic links to the energy system; energy demand in the residential, industrial, commercial/service, agricultural and transportation sectors; the energy supply sector, environmental impacts associated with the energy system; and policy makers' preferences. The report gives a brief description of the purpose and general structure of each model, data requirements, examples of input and output, and model limitations. As a whole, the models integrate information about energy flows in a region to simulate the energy system and its relationship to other regional variables, e.g., demographic and economic trends and the environment
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