Environment research journal最新文献_第8页

Analysis of the atmospheric aerosol loading over Nigeria. 尼日利亚上空大气气溶胶负荷分析。

Environment research journal Pub Date : 2010-01-01 DOI: 10.3923/ERJ.2010.145.156

A. Oyem, A. I. Igbafe

引用次数: 14

Biosorption of Lead (Pb2+) by Luffa cylindrical Fiber 丝瓜圆柱纤维对铅(Pb2+)的生物吸附

Environment research journal Pub Date : 2010-01-01 DOI: 10.3923/ERJ.2010.157.166

P. Saueprasearsit, M. Nuanjaraen, M. Chinlapa

引用次数: 23

The Impacts of Micro-Topographic Changes on Mangroves in the Lower Reaches of the Benin River, Niger Delta 尼日尔三角洲贝宁河下游微地形变化对红树林的影响

Environment research journal Pub Date : 2010-01-01 DOI: 10.3923/ERJ.2010.167.172

E. Ohimain, J. Bamidele, Olumide O. Omisore

引用次数: 6

Application of geo-information for evaluation of land use change: a case study of Federal Capital Territory-Abuja. 地理信息在土地利用变化评价中的应用:以联邦首都直辖区-阿布贾为例。

Environment research journal Pub Date : 2010-01-01 DOI: 10.3923/ERJ.2010.140.144

M. Idoko, F. Bisong

引用次数: 13

Nitrate contamination of groundwater in irrigated perimeters under arid climate (the case of Souss-Massa aquifer, Morocco). 干旱气候下灌溉地区地下水的硝酸盐污染(以摩洛哥Souss-Massa含水层为例)。

Environment research journal Pub Date : 2009-09-07 DOI: 10.3923/ERJ.2009.92.100

T. Tagma, Y. Hsissou, L. Bouchaou, L. Bouragba, S. Boutaleb

{"title":"Nitrate contamination of groundwater in irrigated perimeters under arid climate (the case of Souss-Massa aquifer, Morocco).","authors":"T. Tagma, Y. Hsissou, L. Bouchaou, L. Bouragba, S. Boutaleb","doi":"10.3923/ERJ.2009.92.100","DOIUrl":"https://doi.org/10.3923/ERJ.2009.92.100","url":null,"abstract":"The objective of this study was to clarify, the current status of alluvial aquifer in the Souss-Massa basin, where, the nitric pollution of groundwater is being increasing along the last decades. A multi-approach methodology using hydrogeology, nitrate concentrations, irrigation mode and Oxygen-18 and Deuterium isotopes data, was carried out to identify the sources of this pollution. According to the spatial distribution of nitrate contents, nitric pollution occurs mainly in the Chtouka-Massa plain. More than 36% of the sampled wells exceed the value of 50 mg L-1 which, constitutes the threshold value of nitrate concentrations for drinking water Moroccan standards. The groundwater in Souss plain is less polluted comparing to Chtouka-Massa. Only 7% of wells exceed the permitted level. The widespread distribution of high nitrate contents agrees with the distribution of irrigated areas, which can explain the major origin from agricultural fertilizers. High nitrate levels are associated with high δ18O values, clearly indicating that significant quantities of evaporated (isotopically enriched) irrigation water infiltrate along with fertilizer nitrate to the groundwater system. Different δ18O-NO3- trends suggest isotopically distinct, non-point source origins, which vary spatially and temporally, due to different degrees of evaporation/recharge and amounts of fertilizer applied.","PeriodicalId":72927,"journal":{"name":"Environment research journal","volume":"5 1","pages":"92-100"},"PeriodicalIF":0.0,"publicationDate":"2009-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70026045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Land tenure systems and extension methods: assessment of agroforestry adoption in Kalungu sub-county, Masaka district, Uganda. 土地所有制制度和推广方法:乌干达马萨卡区卡伦古副县农林业采用的评估。

Environment research journal Pub Date : 2009-01-21 DOI: 10.4314/JEXT.V7I1.2779

M. Buyinza, R. Nalule, P. Byakagaba

引用次数: 5

A Preliminary Investigation of Fecal Indicator Bacteria, Human Pathogens, and Source Tracking Markers in Beach Water and Sand. 滩海水沙中粪便指示菌、人类致病菌及来源追踪标记物的初步调查。

Environment research journal Pub Date : 2009-01-01

Kelly D Goodwin, Lisa Matragrano, David Wanless, Christopher D Sinigalliano, Michael J LaGier

{"title":"A Preliminary Investigation of Fecal Indicator Bacteria, Human Pathogens, and Source Tracking Markers in Beach Water and Sand.","authors":"Kelly D Goodwin, Lisa Matragrano, David Wanless, Christopher D Sinigalliano, Michael J LaGier","doi":"","DOIUrl":"","url":null,"abstract":"Data suggesting that fecal indicating bacteria may persist and/or regrow in sand has raised concerns that fecal indicators may become uncoupled from sources of human fecal pollution. To investigate this possibility, wet and dry beach sand, beach water, riverine water, canal water, and raw sewage samples were screened by PCR for certain pathogenic microbes and molecular markers of human fecal pollution. The targets included in this study were human specific Bacteroides (HF8 marker), human-specific enterococci (esp gene), Staphylococcus aureus, Escherichia coli 0157:H7, Campylobacter jejuni, and adenovirus. Sewage samples were also tested for Salmonella species. The results were compared to concentrations of enterococci, Escherichia coli, and Bacteroides species, as determined by membrane filtration methods. Molecular analysis yielded positive results for human specific Bacteroides, and S. aureus, in samples of raw sewage. Two of the environmental samples were positive for human specific Bacteroides and one was positive for S. aureus. The PCR screen was negative for other samples and targets, despite exceedance of EPA single sample guidelines for recreational waters on several of the sample dates (5/11 dates). However, estimates of the number of cells delivered to the PCR reaction suggested that few of the samples met the detection limit of the PCR reaction due to a variety of factors. The analysis indicated a need to improve nucleic acid processing in order to enable better delivery of DNA to downstream molecular methods.","PeriodicalId":72927,"journal":{"name":"Environment research journal","volume":"2 4","pages":"395-417"},"PeriodicalIF":0.0,"publicationDate":"2009-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9788672/pdf/nihms371456.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10795928","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0