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128 articles for “environmental studies”
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Research ArticleOpen accessIn the abstractFluctuations of Phytoplankton Community in the Coastal Waters of Caspian Sea in 2006Siamak Bagheri, Mashhor Mansor, Marzieh Makaremi et al.Problem statement: The Caspian Sea ecosystem has been suffered with many problems since 1980s. Aanthropogenic pollution from heavy metals, hydrocarbons, pesticides, changes in the quantity of nutrient inputs by rivers, are significant threats to biodiversity and biological resources such as plankton structure in the Caspian Sea. According to the significant of phytoplankton community in marine system. The state of the … …American Journal of Applied Sciences, Vol. 8, Issue 12 · 20 Oct 2011 · 8,460 accessesView PDFCite
Research ArticleOpen accessIn the abstractA Critical Review of Climate Change Induced Psychosocial Impacts and Options for Strengthening Social Support SystemsParnali Dhar Chowdhury, C. Emdad Haque, Graham SmithProblem statement: Climate change and its associated manifestations have only recently emerged as significant threats to health faced by Canadians. The emergence of these threats has meant that Canadians are faced with increasing health-related concerns that are more frequent, more severe and occurring in communities where they have not been previously experienced. The compounding effects of change in weather patterns … …American Journal of Environmental Sciences, Vol. 7, Issue 4 · 26 Aug 2011 · 7,428 accessesView PDFCite
Research ArticleOpen accessIn the abstractAnalysis of Diffusion Coefficient using Reversed-Flow Gas Chromatography-A ReviewKhalisanni Khalid, Rashid Atta Khan, Sharifuddin Mohd. ZainProblem statement: Since the earliest publication on the technique, Reversed-Flow Gas Chromatography (RF-GC) has been used to determine physicochemical properties by measuring the value of one in the presence of another. The method is precise, accurate and simple compared to other conventional techniques. Approach: The experimental setup consists of a small modification of a commercial gas chromatograph, so that it … …American Journal of Applied Sciences, Vol. 8, Issue 5 · 17 May 2011 · 7,227 accessesView PDFCite
Research ArticleOpen accessIn the abstractMalaria and Climate Change: Discussion on Economic ImpactsMd. Shahin Mia, Rawshan Ara Begum, Ah-Choy Er et al.Problem statement: Climate change is a global environmental change that is adversely affecting human health by causing various health impacts in countries throughout the world. Climate is the most influential driving force of vector-borne diseases such as malaria. Changes in climate factors substantially affect reproduction, development, distribution and seasonal transmissions of malaria. Climate change increases the outbreak of malaria which … …American Journal of Environmental Sciences, Vol. 7, Issue 1 · 28 Feb 2011 · 6,588 accessesView PDFCite
Research ArticleOpen accessIn the abstractOptimization of Hydraulic Parameters of Iranshahr Alluvial AquiferJafar Rahnama-Rad, Mohammad Yaghoub Bavali, Reza DerakhshaniProblem statement: The Iranshahr aquifer consists of an unconfined layer. We simulated groundwater flow of the Iranshahr aquifer in a conceptual model. This model is a suitable tool for management of groundwater system and would also be effective when applied in other countries. Approach: In this study, we constructed the conceptual model of Iranshahr aquifer, which is important and applicable … …American Journal of Environmental Sciences, Vol. 6, Issue 6 · 31 Dec 2010 · 8,547 accessesView PDFCite
Research ArticleOpen accessIn the abstractGlomalin Production and Microbial Activity in Soils Impacted by Gypsum Mining in a Brazilian Semiarid AreaAdalia Cavalcanti do Espírito Santo Mergulhao, Helio Almeida Burity, Fabio Sérgio Barbosa da Silva et al.Problem statement: Mining activities involve the removal of the vegetal cover and the soil organic layer, causing a severe environmental impact. In Northeast Brazil, 40% of the world’s crude gypsum is found in a semiarid area, making this region responsible for 95% of the gypsum demand in the national market. Although economically important, this activity is harmful to the environment. … …American Journal of Agricultural and Biological Sciences, Vol. 5, Issue 4 · 11 Nov 2010 · 9,028 accessesView PDFCite
Research ArticleOpen accessIn the abstractProspects of Waterway Development as a Catalyst to Improve Regional and Community Socio-Economy LevelSulaiman M. Yassin, Hayrol Azril Mohamed Shaffril, Md. Salleh Hassan et al.Problem statement: Malaysia has achieved a number of successes in its transportation development. The success of Kuala Lumpur International Airport and Northern and Southern Highway project for example have given the community a lot of benefits in term of social and economic development, but what if an inland waterway system can be developed in Malaysia especially along the Pahang River … …American Journal of Economics and Business Administration, Vol. 2, Issue 3 · 30 Sep 2010 · 8,071 accessesView PDFCite
Research ArticleOpen accessIn the abstractDifferential Gene Expression in Zebrafish (Danio rerio) Following Exposure to Gaseous Diffusion Plant Effluent and Effluent Receiving Stream WaterBen F. Brammell, Andrew J. WiggintonProblem statement: The expression of six genes known to serve as bioindicators of environmental stress were examined using real-time quantitative PCR in liver tissue extracted from zebrafish (Danio rerio, Hamilton) exposed to effluent and effluent containing stream water associated with the Paducah Gaseous Diffusion Plant (PGDP). Approach: The PGDP, the only active uranium enrichment facility in the US, is located … …American Journal of Environmental Sciences, Vol. 6, Issue 3 · 30 Jun 2010 · 7,775 accessesView PDFCite
Research ArticleOpen accessIn the abstractSuitability of Using Phragmites australis and Tamarix aphylla as Vegetation Filters in Industrial AreasWafa’a A. Al-TaisanProblem Statement: Many soils of different areas of the world are subjected to heavy metal pollution due to human activities especially the industry. These metals are hazardous to human health and could affect ecosystems. Toxic metal pollution in water and soil is a major environmental problem and most conventional remediation approaches do not provide acceptable solution, hence the studies of … …American Journal of Environmental Sciences, Vol. 5, Issue 6 · 31 Dec 2009 · 8,450 accessesView PDFCite
Research ArticleOpen accessIn the abstractPresence of Arsenic in Commercial BeveragesJason Roberge, Andrew T. Abalos, Julia M. Skinner et al.Problem statement: This study’s goal was to assess the arsenic concentration of various beverages and broths purchased from a local chain supermarket. A source of chronic arsenic exposure occurs via food and beverage consumption. Groundwater levels of total arsenic are regulated (<10 μg L-1) by the Environmental Protection Agency (EPA) but few studies have examined arsenic concentrations in common beverages. … …American Journal of Environmental Sciences, Vol. 5, Issue 6 · 31 Dec 2009 · 8,353 accessesView PDFCite