128 articles for “environmental problems”

Research ArticleOpen accessIn the abstractCortisol Response Mediates HIV-1-Related Cognitive Deficits Among Injecting Drug AbusersRaymond L. Ownby, Drenna Waldrop-Valverde, Adarsh M. Kumar et al.The cortisol response is an important measure of the endocrine activity to environmental challenges and has been related to cognitive function and mood. Previous studies have shown that the cortisol response to stress is dysregulated in persons with HIV-1 infection. Since cortisol is neurotoxic and its levels have been related to cognitive dysfunction in various disorders, it is possible that … …American Journal of Infectious Diseases, Vol. 2, Issue 2 · 30 Jun 2006 · 6,759 accessesView PDF Cite

Research ArticleOpen accessIn the abstractInvestigation and Situation of Timber Harvesting Mechanization of Turkey and the Usage of Tractors in Timber ExtractionMurat Demir, Tolga OzturkIn this study is to summarize usage of tractors in timber extraction and major problems of mechanized timber harvesting in Turkey. Timber harvesting in Turkey is still carried out by manual methods due to economical, social and environmental constraints. Almost 80% of harvesting activities are mechanized in many developed countries while this value is only 5% in Turkey. Overall ratio … …American Journal of Environmental Sciences, Vol. 1, Issue 2 · 30 Jun 2005 · 6,585 accessesView PDF Cite

Research ArticleOpen accessIn the abstractThe Situation and Evaluation of Forest Harvesting Methods in TurkeyMurat Demir, Tolga OzturkThe present study summarize and evaluate major problems of timber harvesting in Turkey and the future principles and objectives have been defined. Timber harvesting in Turkey is still carried out by manual methods due to economical, social and environmental constraints. Almost 80% of harvesting activities are mechanized in many developed countries while this value is only 5% in Turkey. Overall … …American Journal of Applied Sciences, Vol. 2, Issue 2 · 28 Feb 2005 · 7,396 accessesView PDF Cite

Research ArticleOpen accessAll words, across the recordEthics and Sustainability: A Review of Water Policy and ManagementRavichandran Moorthy, Ganesan JeyabalanProblem statement: This is a review paper that examines the extent aspects such as ethics, sustainability and the environment manifest in the water policy and water management in Malaysia. The study examines two aspects of this topic; firstly it examines the various objectives and considerations in the National Water Policy and secondly it discusses the issues that arise regarding water … …American Journal of Applied Sciences, Vol. 9, Issue 1 · 3 Nov 2011 · 7,861 accessesView PDF Cite

Review ArticleOpen accessAll words, across the recordNanoplastics in the Environment and the Effects on the ZebrafishJimmy De León, María del C. Cotto, Francisco MárquezPlastic is one of the most used materials in the world, adopted in almost all activities of human life, but due to the high persistence and durability in the environment, it is causing pollution problems. Through different processes, small particles of polymers are emerging and the effects on the health are still unknown. The Danio rerio (zebrafish) is a model … …American Journal of Engineering and Applied Sciences, Vol. 12, Issue 4 · 8 Oct 2019 · 7,695 accessesView PDF Cite

Research ArticleOpen accessAll words, across the recordTransportation EngineeringRelly Victoria V. Petrescu, Raffaella Aversa, Antonio Apicella, Florian Ion T. PetrescuThe shipments were absolutely necessary at all times, but still have polluted and damaged the environment. The technique of transport or the engineering of transport is the application of the principles of technology and scientific findings to the planning, design check, operation and plan management for any mode of transport, in order to ensure that the conditions of safety, efficiency, … …American Journal of Engineering and Applied Sciences, Vol. 10, Issue 3 · 20 Jul 2017 · 8,676 accessesView PDF Cite

Research ArticleOpen accessAll words, across the recordReconciling the Bio Safety Protocol and the WTO Regime: Problems, Perspectives and PossibilitiesP. G. Gayathri, Reshma R. KurupProblem statement: The issue of regulation of international trade in Genetically Modified Organisms (GMOs) evokes a very unique, passionate and emotional debate between environmentalists and businesses. At the conceptual level itself, like most other multilateral environmental agreements, the Cartagena Protocol appears to be incompatible with the WTO Rules. Approach: Further, since there is precious little scientific certainty on the actual … …American Journal of Economics and Business Administration, Vol. 1, Issue 3 · 30 Sep 2009 · 7,780 accessesView PDF Cite

Research ArticleOpen accessAll words, across the recordPotential Environmental and Health Impacts of High Land Application of Cheese WheyA. E. Ghaly, N.S. Mahmoud, D.G. Rushton, F. ArabA laboratory scale experiment was carried out to study the transformation and transport of nitrogenous compounds in soils receiving high application rates of cheese whey (twice the nitrogen requirement for crops). The experimental apparatus consists of 36 soil columns constructed of 20 cm inside diameter PVC pipes. Three types of soil (sandy loam, loam and sandy clay loam) and three … …American Journal of Agricultural and Biological Sciences, Vol. 2, Issue 2 · 30 Jun 2007 · 8,155 accessesView PDF Cite