共查询到20条相似文献,搜索用时 31 毫秒
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Sludge concentration--needs, accomplishments, and future goals 总被引:1,自引:0,他引:1
P L McCarty 《Journal - Water Pollution Control Federation》1966,38(4):493-507
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Cuyler Christine Rowell Janice Adamczewski Jan Anderson Morgan Blake John Bretten Tord Brodeur Vincent Campbell Mitch Checkley Sylvia L. Cluff H. Dean Côté Steeve D. Davison Tracy Dumond Mathieu Ford Barrie Gruzdev Alexander Gunn Anne Jones Patrick Kutz Susan Leclerc Lisa-Marie Mallory Conor Mavrot Fabien Mosbacher Jesper Bruun Okhlopkov Innokentiy Mikhailovich Reynolds Patricia Schmidt Niels Martin Sipko Taras Suitor Mike Tomaselli Matilde Ytrehus Bjørnar 《Ambio》2020,49(3):805-819
Ambio - Muskoxen (Ovibos moschatus) are an integral component of Arctic biodiversity. Given low genetic diversity, their ability to respond to future and rapid Arctic change is unknown, although... 相似文献
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Wilson DG 《Journal of the Air & Waste Management Association (1995)》2012,62(6):607-624
The years 2012 and beyond seem likely to record major changes in energy use and power generation. The Japanese tsunami has resulted in large countries either scaling back or abolishing the future use of nuclear energy. The discovery of what seems like vast amounts of economically deliverable natural gas has many forecasting a rapid switch from coal- to gas-fired generating plants. On the other hand, environmentalists have strong objections to the production of natural gas and of petroleum by hydraulic fracturing from shale, or by extraction of heavy oil. They believe that global warming from the use of fossil fuels is now established beyond question. There has been rapid progress in the development of alternative energy supplies, particularly from on-shore and off-shore wind. Progress toward a viable future energy mix has been slowed by a U.S. energy policy that seems to many to be driven by politics. The author will review the history of power and energy to put all of the above in context and will look at possible future developments. He will propose what he believes to be an idealized energy policy that could result in an optimum system that would be arrived at democratically. 相似文献
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Production and consumption of food and in a rural area over the last 400 years were reconstructed for a parish in south east Sweden. This was based on a number of different data sources, including historical maps and official demographic and agricultural statistics. Changes in population (and thus consumption) and the production from arable land and livestock were calculated and used to provide an estimate of the area's supply and demand over time, and of the historical sustainability of the area. Overall food productivity was remarkably constant over time, at approximately 0.04 kgC m(-2) y(-1), despite recent changes in population size and the area of cultivated land. The empirical results from the past and the present, together with the future land changes due to shoreline displacement were used to predict the situation in the future. These final estimates can be used in the assessment of risk for exposure to contaminated food for the future population in the area. 相似文献
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An S Li H Guan B Zhou C Wang Z Deng Z Zhi Y Liu Y Xu C Fang S Jiang J Li H 《Ambio》2007,36(4):335-342
Natural wetlands, occupying 3.8% of China's land and providing 54.9% of ecosystem services, are unevenly distributed among eight wetland regions. Natural wetlands in China suffered great loss and degradation (e.g., 23.0% freshwater swamps, 51.2% costal wetlands) because of the wetland reclamation during China's long history of civilization, and the population pressure and the misguided policies over the last 50 years. Recently, with an improved understanding that healthy wetland ecosystems play a vital role in her sustainable economic development, China started major efforts in wetland conservation, as signified by the policy to return reclaimed croplands to wetlands, the funding of billions of dollars to restore degraded wetlands, and the national plan to place 90% of natural wetlands under protection by 2030. This paper describes the current status of the natural wetlands in China, reviews past problems, and discusses current efforts and future challenges in protecting China's natural wetlands. 相似文献
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Environmental Science and Pollution Research - 相似文献
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W R Ott 《Journal of the Air & Waste Management Association》1990,40(7):966-975
Historically, environmental regulatory programs designed to protect public health have monitored pollutants only in geophysical carrier media (for example, outdoor air, streams, soil). Field studies have identified a gap between the levels observed in geophysical carrier media and the concentrations with which people actually come into contact: their daily exposures. A new approach--Total Human Exposure (THE)--has evolved to fill this gap and provide the critical data needed for accurately assessing public health risk. The THE approach considers a three-dimensional "bubble" around each person and measures the concentrations of all pollutants contacting that bubble, either through the air, food, water, or skin. Two basic THE approaches have emerged: (1) the direct approach using probability samples of populations and measuring pollutant concentrations in the food eaten, air breathed, water drunk, and skin contacted; and (2) the indirect approach using human activity pattern-exposure models to predict population exposure distributions. Using the direct approach, EPA has conducted over 20 field studies for pollutants representing four groups--volatile organic compounds, carbon monoxide, pesticides, and particles--in 15 cities in 12 states. The indirect modeling approach has been applied to several of these pollutants. Additional research is needed in a great variety of areas. Even from the few projects completed thus far, the THE approach has yielded a rich new data base for risk assessments and has provided many surprises about the relative contribution of various pollutant sources to public health risk. 相似文献
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The synthesis of the BONUS+ research is introduced. The HELCOM Baltic Sea Action Plan is examined as a case to illustrate the potentials and challenges in building the science–policymaking interface on a macroregional level. The projects address environmental challenges in the Baltic Sea as defined by the Baltic Sea Action Plan, or consider the environmental governance and decision making within the Baltic Sea context in general. Eutrophication, biodiversity, hazardous substances, maritime activities, and the environment governance are addressed, as are crosscutting issues, such as the impact of climate change, maritime spatial planning and impacts of future development on ecosystem services. The projects contributed to relevant policy developments: 37 consultations carried out at EU level, 49 modifications to policy documents and action plans, 153 suggestions for the efficacy of pertinent public policies and governance, and in 570 occasions, scientists working in BONUS+ projects served as members or observers in scientific and stakeholder committees. 相似文献
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Elfadadny Ahmed El-Husseiny Hussein M. Abugomaa Amira Ragab Rokaia F. Mady Eman A. Aboubakr Mohamed Samir Haney Mandour Ahmed S. El-Mleeh Amany El-Far Ali H. Abd El-Aziz Ayman H. Elbadawy Mohamed 《Environmental science and pollution research international》2021,28(36):49447-49466
Environmental Science and Pollution Research - Cancer, a major public health problem, is one of the world’s top leading causes of death. Common treatments for cancer include cytotoxic... 相似文献
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Jonathan M. P. Torres Kalina Bermúdez Marmolejo-Rodríguez Ana Judith López Eugenia López 《Environmental science and pollution research international》2022,29(41):61547-61549
Environmental Science and Pollution Research - 相似文献
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Makwana Dhruv Bellani Jayesh Verma Harsh Kumar Khatri Dhrumil Shah Manan 《Environmental science and pollution research international》2021,28(28):37110-37119
Environmental Science and Pollution Research - Nanotechnology has opened up a plethora of opportunities and has acquired extreme importance in a myriad of fields to produce enhanced materials.... 相似文献
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Past,present, and future use of phosphorus in Chinese agriculture and its influence on phosphorus losses 总被引:9,自引:0,他引:9
Large inputs of phosphorus (P) in chemical fertilizers and feed supplements since 1978 have improved soil P status in arable land in China, but have also created challenges by increasing P concentrations in manure and exacerbating water quality degradation. Arable land in China can be divided into five management zones based on soil P chemistry, with 15–92 % of arable land having lower P status than the agronomic optimum and 0.3–7.2 % having severe risks of P leaching losses. A scenario analysis of soil P budget and agronomic P demand during 2011–2030 highlighted the great pressure China faces in sustainable P management and the need for drastic changes in current practices. This includes new policies to reduce P supplementation of feed and improved P use efficiency by livestock and programs to expand the adoption of appropriate fertilization, soil conservation, and drainage management practices to minimize P losses. 相似文献
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《Atmospheric environment(England)》1987,21(3):463-468
Emissions of CO, N2O and NOx from combustion are estimated using a common set of demographic, economic and regulatory assumptions. The estimates represent a sum of emissions from six large geographical regions in which energy use was predicted using an economic forecasting model. Analysis was performed for 1960, 1975, 2000 and 2025. Future global CO emissions from combustion are likely to decrease because of regulation in the developed nations and fuel-switching in the developing nations. Future global N2O and NOx combustion emissions are likely to increase unless there is new regulation. The greatest uncertainties in emission estimates arise from not knowing the energy paths China and other developing nations will follow in the pursuit of economic development. 相似文献
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Saini Jyoti Pandey Sonali 《Environmental science and pollution research international》2023,30(1):78-89
Environmental Science and Pollution Research - Saline lakes are internationally known for unique chemical compositions, incorporate assorted foliage, and give a few biological system benefits and... 相似文献
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Shoaib Muhammad Zhang Shengzhong Ali Hassan 《Environmental science and pollution research international》2023,30(6):14029-14049
Environmental Science and Pollution Research - The emergence of the underlying blockchain technology of bitcoin has gained extensive attention from researchers and practitioners. As distributed... 相似文献
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Baby Ruby Nixon Peter Daniel Kumar Nallapaneni Manoj Subathra M. S. P. Ananthi Nallamuthu 《Environmental science and pollution research international》2022,29(1):371-404
Environmental Science and Pollution Research - Dye-sensitized solar cells (DSSC) constructed using natural dyes possess irreplaceable advantages in energy applications. The main reasons are its... 相似文献
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Public participation in water resources management: stakeholder voices on degree, scale, potential, and methods in future water management 总被引:1,自引:0,他引:1
The European Water Framework Directive puts strong emphasis on stakeholder and public participation in water management. Several practical questions regarding who should be involved, why, when, and how still remain unanswered. This paper investigates stakeholders' own experiences and views of increased public participation in water management. The article also explores the potential for increasing levels of participation by forming catchment committees with representation from stakeholder groups and through the use of various practical methods for participation. For both these aspects of participation, the views, expectations, and apprehensions of different stakeholder groups involved in nutrient loss management are investigated. Stakeholder opinions were collected by inviting representatives from five stakeholder groups within the R?nne? catchment in southern Sweden to a catchment dialog process. 相似文献