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381.
This report describes an analysis of existing occupational injury data concerning stairway-related falls. Injury data based on reports obtained from the Ohio and California workers' compensation agencies were analyzed to identify common stair injury patterns. Frequency tabulations are provided for the following factors: (a) location (indoors vs. outdoors, on vs. off employer's premises, site category); (b) task (ascending vs. descending, body movement on the stair, task being attempted); and (c) events (precipitating actions and conditions). One of the most outstanding findings is that 92 % of the injuries occurred when the worker was descending the stair, i.e., 636 of the 688 cases in which direction of travel was indicated. Additionally, injury records from the New York and Ohio workers' compensation agencies were used to rank industries in terms of combined frequency and severity rates of stairway-related injuries. 相似文献
382.
R. Paul Philp Robert J. Pirkle Patrick W. McLoughlin Aaron D. Peacock Xiaomin Yang 《补救:环境净化治理成本、技术与工艺杂志》2007,17(3):127-137
Stable carbon isotopes have been used in various applications for approximately 50 years, in many applications including the fields of medicine, criminology, and biology and recently has been used in the remediation field to track the degradation of various organic compounds. It is a commercially available investigation technology that is gaining in popularity and has unique applications related to monitored natural attenuation (MNA). To further discuss this technology and how it is used at MNA sites, we presented the following question to five guest panel members. © 2007 Wiley Periodicals, Inc. 相似文献
383.
Maria Luisa Cohen 《The Environmentalist》1987,7(1):61-64
Summary The author considers various moral, social and political issues that have become apparent from the aftermath of the WWF's twenty-fifth Anniversary Celebrations in Assisi, Italy. In particular, the difficulty of making people understand the very ethics of conservation, when their cultural history has shaped their minds quite differently, is highlighted, and this is reflected in the author's suggested subtitle for the paper, How to Love Nature Without Getting your Shoes Wet.But don't ever leave me alone with Nature, For I know too much about her not to be afraid (Alfred de Vigny)Maria Luisa Cohen is President of the Assisi Nature Council (See also,The Environmentalist, 5 (3) 227–229). 相似文献
384.
Stewart J. Cohen 《Journal of the American Water Resources Association》1987,23(1):91-101
ABSTRACT: Two scenarios of CO2-induced climatic change are used to estimate changes in water use for a number of municipalities in the Great Lakes region of Canada and the United States. Both scenarios, based on General Circulation Models produced by the Goddard Institute for Space Studies (GISS) and Geophysical Fluid Dynamics Lab (GFDL), project warmer temperatures for the region. Using regression models based on monthly potential evapotranspiration for individual cities, it is projected that annual per capita water use will increase by a small amount, which will probably have only a marginal effect on water supplies in the Great Lakes basin. This method could also be used to assess the potential impacts of CO2-induced climatic change on water use by the agriculture and power sectors, as well as the effectiveness of water policy initiatives, such as price changes. More work is needed to project water use during peak periods (warm dry spells), which may occur more frequently in a 2 × CO2 climate in this region. 相似文献
385.
Gary M. Russell Mark Stewart Aaron L. Higer 《Journal of the American Water Resources Association》1987,23(5):863-866
ABSTRACT: Areas of low topographic relief have low water-table gradients and make the direction of movement of contaminants from land fills in the ground water difficult to predict from regional gradients alone. The landfill, nearby free-flowing ditches or canals, variations in hydraulic conductivity, and the influence of nearby pumping wells can all affect the direction of flow. In low-gradient areas the concepts of “upgradient” and “downgradient” are less useful in planning the location of monitoring wells than in areas of higher relief. Low-relief areas also may be affected by the discharge of mineralized water from deeper aquifers, naturally or through irrigation, which can mask geochemical surveys intended to detect landfill leachate. Examples of effects of low topographic relief are noted in southeast Florida where water-table gradients are 7×10?-4 to 5×10?-4 feet per foot. Water-table mounding beneath the landfill and the drainage effects of nearby ditches and well have created multiple leachate plumes in Stuart where one plume migrated in a direction opposite to the apparent regional gradient. In Coral Springs analysis suggests a bifurcating plume migrating along two narrow zones. In Fort Pierce it was difficult to detect leachate because of mineralized irrigation water and fertilizer runoff from an adjacent citrus grove. 相似文献
386.
Oedekoven Cornelia S. Marques Tiago A. Harris Danielle Thomas Len Thode Aaron M. Blackwell Susanna B. Conrad Alexander S. Kim Katherine H. 《Environmental and Ecological Statistics》2022,29(1):101-125
Environmental and Ecological Statistics - Various methods for estimating animal density from visual data, including distance sampling (DS) and spatially explicit capture-recapture (SECR), have... 相似文献