Abstract：
:Conservative solute tracer experiments were conducted in Indian Creek, a small urban stream located in Philadelphia, Pennsylvania, USA. Estimated flow rates were between 46 Ls(-1) and 81 Ls(-1), average stream width was 5.5m and average stream depth was 0.2m. Given these dimensions, most researchers would think it reasonable to assume that the stream is completely mixed vertically and horizontally. However, we found that the stream was not vertically completely mixed in a 1.0m deep, 30 m long pool. The limited mixing was demonstrated by the vertical stratification of a tracer cloud which was completely mixed both laterally and vertically across the stream prior to entering the pool. We suggest that the cause of limited mixing is due to a balance between groundwater inflow and transverse dispersion at the cross-section. We show that the unsupported assumption of complete mixing may result in a wide range, and thus increased uncertainty, of the values of stream flow and longitudinal dispersion coefficient estimated from these data. We conclude that the assumption of complete mixing and one-dimensional modeling must be checked against actual field conditions, even in small streams.
journal_name
J Environ Managejournal_title
Journal of environmental managementauthors
Ryan RJ,Boufadel MCdoi
10.1016/j.jenvman.2005.09.016subject
Has Abstractpub_date
2006-10-01 00:00:00pages
50-7issue
1eissn
0301-4797issn
1095-8630pii
S0301-4797(05)00328-2journal_volume
81pub_type
杂志文章abstract：:Environmental cost-benefit analysis has traditionally assumed that the value of benefits is sensitive to their timing and that outcomes are valued higher, the sooner in time they occur following implementation of a project or policy. Though, this assumption might have important implications especially for the social d...
journal_title：Journal of environmental management
pub_type： 杂志文章
doi：10.1016/j.jenvman.2016.03.039
更新日期：2016-07-15 00:00:00
abstract：:This work investigated water samples collected from Tapeng Lagoon and three neighbouring rivers (the Kaoping River, Tungkang River and Lingbeng River) in Taiwan, Republic of China. Canonical discriminant analysis was applied to identify the source of pollution in neighbouring rivers outside Tapeng Lagoon. The two cons...
journal_title：Journal of environmental management
pub_type： 杂志文章
doi：10.1016/j.jenvman.2007.02.010
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abstract：:World trends toward the modern dairies intensification on large production units cause massive animal manure production and accumulation. Improper handling of manure produced by industrial farm operation greatly deteriorates the major environmental media including air, water and soil. The black soldier fly utilizes or...
journal_title：Journal of environmental management
pub_type： 杂志文章
doi：10.1016/j.jenvman.2017.03.047
更新日期：2017-07-01 00:00:00
abstract：:Selecting a suitable Multi Criteria Decision Making (MCDM) method is a crucial stage to establish a Solid Waste Management (SWM) system. Main objective of the current study is to demonstrate and evaluate a proposed method using Multiple Criteria Decision Making methods (MCDM). An improved version of Technique for Orde...
journal_title：Journal of environmental management
pub_type： 杂志文章
doi：10.1016/j.jenvman.2015.09.028
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abstract：:Composting technology has become invaluable in stabilization of municipal waste due to its environmental compatibility. In this review, different types of composting methods reportedly applied in waste management were explored. Further to that, the major factors such as temperature, pH, C/N ratio, moisture, particle s...
journal_title：Journal of environmental management
pub_type： 杂志文章,评审
doi：10.1016/j.jenvman.2016.12.051
更新日期：2017-04-01 00:00:00
abstract：:This study demonstrates simultaneous carbon and nitrogen removal in laboratory-scale continuous flow microbial fuel cell (MFC) and microbial electrolysis cell (MEC) and provides side-by side comparison of these bioelectrochemical systems. The maximum organic carbon removal rates in MFC and MEC tests were similar at 5....
journal_title：Journal of environmental management
pub_type： 杂志文章
doi：10.1016/j.jenvman.2016.02.025
更新日期：2016-05-15 00:00:00
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journal_title：Journal of environmental management
pub_type： 杂志文章
doi：10.1016/j.jenvman.2017.08.006
更新日期：2017-12-01 00:00:00
abstract：:Water scarcity and associated risks are serious societal problems. A major challenge for the future will be to ensure the short-term and long-term provision of accessible and safe freshwater to meet the needs of the rapidly growing human population and changes in land cover and land use, where conservation and protect...
journal_title：Journal of environmental management
pub_type： 杂志文章
doi：10.1016/j.jenvman.2016.10.057
更新日期：2017-02-01 00:00:00
abstract：:One of the main challenges in industrial wastewater treatment and recovery is the removal of sulfate, which usually coexists with Ca2+ and Mg2+. The effect of Mg2+ on sulfate removal by ettringite precipitation was investigated, and the process was optimized in the absence and presence of Mg2+. In the absence of Mg2+,...
journal_title：Journal of environmental management
pub_type： 杂志文章
doi：10.1016/j.jenvman.2017.03.054
更新日期：2017-07-01 00:00:00
abstract：:Dimethachlon is a hazardous xenobiotic which poses a potential risk on the ecosystem and human health after foliar spray for mitigating fungal diseases of crops. A novel dimethachlon-degrading strain was isolated and identified as Brevundimonas naejangsanensis J3. Free cells and enzymes of this strain could rapidly el...
journal_title：Journal of environmental management
pub_type： 杂志文章
doi：10.1016/j.jenvman.2019.109848
更新日期：2020-02-01 00:00:00
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journal_title：Journal of environmental management
pub_type： 杂志文章
doi：10.1016/j.jenvman.2013.04.052
更新日期：2013-10-15 00:00:00
abstract：:A major action to reduce CO2 emissions is replacing fossil fuels by renewable energy sources. Matching the energy supply and demand by the mostly intermittent renewable resources (wind, solar, wave) is hence a hot topic, and energy storage has become crucial. Thermo-chemical energy storage (TCES) has a higher energy d...
journal_title：Journal of environmental management
pub_type： 杂志文章
doi：10.1016/j.jenvman.2020.110582
更新日期：2020-08-01 00:00:00
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journal_title：Journal of environmental management
pub_type： 杂志文章
doi：10.1016/j.jenvman.2019.01.114
更新日期：2019-04-15 00:00:00
abstract：:Water separation and recovery through thickening require adapted flocculants and densification processes. This study aimed to maximize water recovery from phosphate sludge (PS) at Kef Shfeir mine operation, Gafsa Phosphate Company, Tunisia. Representative samples of PS, PS treated with flocculant (F-PS), raw water, an...
journal_title：Journal of environmental management
pub_type： 杂志文章
doi：10.1016/j.jenvman.2019.109801
更新日期：2020-01-15 00:00:00
abstract：:Atmospheric pollution emissions have become a matter of public concern in recent years. However, most of the existing researches on NOx pollution are from the natural science and technology perspective, few studies have been conducted from an economic point, and regional differences have not been given adequate attent...
journal_title：Journal of environmental management
pub_type： 杂志文章
doi：10.1016/j.jenvman.2017.03.016
更新日期：2017-07-01 00:00:00
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journal_title：Journal of environmental management
pub_type： 杂志文章
doi：10.1016/j.jenvman.2007.12.017
更新日期：2009-02-01 00:00:00
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journal_title：Journal of environmental management
pub_type： 杂志文章
doi：10.1016/j.jenvman.2018.03.063
更新日期：2018-06-01 00:00:00
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journal_title：Journal of environmental management
pub_type： 杂志文章
doi：10.1016/j.jenvman.2018.03.122
更新日期：2018-07-01 00:00:00
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journal_title：Journal of environmental management
pub_type： 杂志文章
doi：10.1006/jema.2001.0516
更新日期：2002-04-01 00:00:00
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journal_title：Journal of environmental management
pub_type： 杂志文章
doi：10.1016/j.jenvman.2006.12.030
更新日期：2008-03-01 00:00:00
abstract：:(Aided) phytostabilisation has been proposed as a suitable technique to decrease the environmental risks associated with metal(loid)-enriched mine tailings. Field scale evaluations are needed for demonstrating their effectiveness in the medium- to long-term. A field trial was implemented in spring 2011 in Cu-rich mine...
journal_title：Journal of environmental management
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journal_title：Journal of environmental management
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doi：10.1016/j.jenvman.2016.07.061
更新日期：2016-11-01 00:00:00
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journal_title：Journal of environmental management
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更新日期：2018-05-01 00:00:00
abstract：:Fecal indicator bacteria like Escherichia coli and entercococci are monitored at beaches around the world to reduce incidence of recreational waterborne illness. Measurements are usually made weekly, but FIB concentrations can exhibit extreme variability, fluctuating at shorter periods. The result is that water qualit...
journal_title：Journal of environmental management
pub_type： 杂志文章
doi：10.1016/j.jenvman.2018.06.058
更新日期：2018-10-01 00:00:00
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journal_title：Journal of environmental management
pub_type： 杂志文章
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更新日期：2011-09-01 00:00:00
abstract：:Tilemsi rock phosphate (TRP) of Mali is one of the most promising rock phosphate in West Africa for soil fertilization, but it is little used because of its insoluble form. The main objective of this study is to investigate TRP effects on rhizobia associated with the multipurpose leguminous tree Sesbania sesban grown ...
journal_title：Journal of environmental management
pub_type： 杂志文章
doi：10.1016/j.jenvman.2010.11.002
更新日期：2012-03-01 00:00:00
abstract：:Accurate estimation of particulate emissions is fundamental to assessing the air quality risks posed by existing and proposed open cut black coal mines. The currently available emission estimation techniques are based on a limited range of empirical studies, and the need for additional research and development of acti...
journal_title：Journal of environmental management
pub_type： 杂志文章
doi：10.1016/j.jenvman.2018.11.020
更新日期：2019-02-15 00:00:00
abstract：:This paper outlines five principles for effective practice of knowledge exchange, which when applied, have the potential to significantly enhance the impact of environmental management research, policy and practice. The paper is based on an empirical analysis of interviews with 32 researchers and stakeholders across 1...
journal_title：Journal of environmental management
pub_type： 杂志文章
doi：10.1016/j.jenvman.2014.07.021
更新日期：2014-12-15 00:00:00
abstract：:The objective of this analysis is to estimate the incremental cost effectiveness ratios for the 2012 populations in Canada, each province/territory, and 17 census metropolitan areas, for practical radon mitigation scenarios to reduce residential radon exposures. Sixteen intervention scenarios compare radon mitigation ...
journal_title：Journal of environmental management
pub_type： 杂志文章
doi：10.1016/j.jenvman.2019.06.032
更新日期：2019-10-01 00:00:00
abstract：:Saline wetlands in the Monegros Desert, NE Spain, are situated in an agricultural landscape which is undergoing significant changes. Agricultural intensification in recent decades and current installation of new irrigation systems threaten these valuable habitats, set to be included in the Natura2000 network. Their pr...
journal_title：Journal of environmental management
pub_type： 杂志文章
doi：10.1016/j.jenvman.2007.06.030
更新日期：2009-05-01 00:00:00
