384 articles for “pH indicator”

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Research ArticleOpen accessIn the abstractEnergy Flow in Agriculture: BangladeshM. S. Alam, M. R. Alam, K. K. IslamIn this paper, a qualitative energy flow analysis in Bangladesh agriculture has been made for a period from 1980-81 to 2000-01 to evaluate the impact of energy input to produce output. Human and animal muscle power and machinery energy for tillage operation, electricity and diesel energy for irrigation, fertilizer and pesticides energy for growth and protection are taken into account. … …American Journal of Environmental Sciences, Vol. 1, Issue 3 · 30 Sep 2005 · 11,592 accessesView PDF Cite

Research ArticleOpen accessIn the abstractRelationships between Heavy Metal Concentrations in the American Oyster (Crassostrea virginica) and Metal Levels in the Water Column and Sediment in Apalachicola Bay, FloridaDennis A. Apeti, Larry Robinson, Elijah JohnsonThis study aims to assess baseline concentrations of heavy metals (Cd, Cr, Cu, Pb and Zn) in the oyster soft tissue as they relate to concentrations in the water column (particulate phase) and sediment in Apalachicola Bay. In order to conduct these assessments, a total of 360 samples, collected in two seasons (winter and summer) and were analyzed using atomic … …American Journal of Environmental Sciences, Vol. 1, Issue 3 · 30 Sep 2005 · 7,345 accessesView PDF Cite

Research ArticleOpen accessIn the abstractPhotovoltaic Technology of Electricity Generation for Desert CampingShafiqur Rehman, Ali A. Shash, Omar S. Baghabra Al-AmoudiThis study presents a case study on the utilization of global solar radiation data on horizontal surface to perform economical feasibility of using Photovoltaic (PV) panels with battery backup to meet a small load for a camping site in Saudi Arabia. The analysis considers three scenarios with daily average energy demands of: (i) full load, (ii) 75% load and (iii) … …American Journal of Environmental Sciences, Vol. 1, Issue 1 · 31 Mar 2005 · 6,929 accessesView PDF Cite

Research ArticleOpen accessIn the abstractComparison of Environmental Performance-HSEQ Management System, Regarding the International and Iranian Oil and Gas General ContractorsJ. Nouri, M. Abbasspour, E. Roayaei, H. NikoomaramThe ever-increasing significance of the health, safety, environment and quality Management system has led general contractors including those involved in the oil and gas industry to place the implementation of this integrated system on their agenda, in a way that the implementation and execution of this system is considered as one of their operation and development strategies. The purpose of … …American Journal of Applied Sciences, Vol. 2, Issue 1 · 31 Jan 2005 · 7,086 accessesView PDF Cite