نتایج جستجو برای: environmental issues
تعداد نتایج: 659013 فیلتر نتایج به سال:
Maintaining and remediating the quality of water, air and soil, so that Earth will be able to sustainably support human population growth, is one of the great challenges of our generation. The scarcity of water, both in terms of quantity as well as quality, poses a significant threat to the man's well-being. Environmental technology is set to play a key role in the shaping of current environmen...
Cultivation of sugarcane for bioethanol is increasing and the area under sugarcane is expanding. Much of the sugar for bioethanol comes from large plantations where it is grown with relatively high inputs. Sugarcane puts a high demands on the soil because of the use of heavy machinery and because large amounts of nutrients are removed with the harvest; biocides and inorganic fertilizers introdu...
In this talk I will pick three key environmental issues that dominate the risk or impact, or dominate the public perception thereof: (a) What is the effect upon health of particulate air pollution at today's levels? Experts increasingly believe that fine particulates kill 70,000 people a year in the USA, but this has not yet been officially admitted by any government. (b) What is the effect of ...
Formerly a rich-county preoccupation, dealing more explicitly with environmental concerns around agriculture is becoming a mainstream concern for developing countries. Concerns arise with all the major resources underpinning farming, such as land and water which are selectively reviewed here but most attention is concentrated on the soil resource and carbon sequestration possibilities. The resu...
Functions in landscape design include values in design and management process to satisfy moral and environmental needs that current attitudes see that as open space design by natural and man-made elements, while the basic intellectual layers related to human as the principles of environmental desi...
Researchers often regard remanufacturing as an environmentally beneficial end-of-life option. There have been, however, few environmental measurements performed in the area. The aim of this paper is to identify general environmental pros and cons with remanufacturing. This is done through the analysis of practical examples in remanufacturing industries. Life Cycle Assessment methodology has bee...
Man can't live without environment, one with some strictly specified parameters. Despite this known truth, the relation between man and environment is far from peaceful coexistence. From history's point of view, it can be noticed that mankind have repeatedly caused environmental disasters. At first those were purely local. The primitive nomad usually moved elsewhere in the face of an ecological...
In the past, methylmercury compounds were manufactured as fungicides or appeared as unwanted byproducts of the chemical industry, but today the methylation of inorganic mercury in aquatic sediments and soils is the predominant if not the sole source of methylmercury. This form of mercury is bioaccumulated to a high degree in aquatic food chains to attain its highest concentrations in edible tis...
'We, as a scienti/ic cornznity, s.hon/ld responsibly addrdess new scientific issutes by zeroing i ni on the highest priority needs with strategies that are in proportioni to the size oJthe problens. Committing resources to one project often means another issue will go unattended. The potential impact on human health and environmental quality can be significant. Admittedly, research career goals...
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