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303 articles for “Season”
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Research ArticleOpen accessIn the abstractA Combining Ability Analysis of Cassava Manihot esculenta Crantz Genotypes to Anthracnose DiseaseO. F. Owolade, A. G.O. Dixon, S. R. Akande, S. A. OlakojoCassava Anthracnose Disease (CAD) caused by Colletotrichum gloeosporioides f sp. manihotis has been recognized as one of the major economic disease of cassava in all the cassava growing regions of Africa. Little information is available on the resistance of cassava to C. gloeosporioides f sp. manihotis. This study was conducted to determine the relative importance of general (GCA) and specific … …American Journal of Applied Sciences, Vol. 6, Issue 1 · 31 Jan 2009 · 7,800 accessesView PDFCite
Research ArticleOpen accessIn the abstractRecent Trends in Ozone and Particle Concentrations in the Sydney (Australia) AirshedMerched Azzi, Hiep DucAn overview is presented of changes in ground level ozone and atmospheric fine particles determined using ambient monitoring data collected at selected locations in Sydney, Australia. After removing seasonally, auto-regressive and moving average dependence from the selected time series, the trend of a selected series was modelled using the fractional long-term dependent component. The selected technique was able to detect … …American Journal of Environmental Sciences, Vol. 4, Issue 5 · 31 Oct 2008 · 6,682 accessesView PDFCite
Research ArticleOpen accessIn the abstractIntegrated Water Resources Management Improving Langat Basin Ecosystem HealthMazlin B. Mokhtar, Mohammad Fawzi Al Ajlouni, Rahma ElfitrieThe ecosystem provides us with all the goods and services that form the base of our economic, social cultural and spiritual life. Good scientific information will be required for managing the environment by using the Ecosystem approach. The groundwater is considered as a possible supplementary of alternative water source, and some factories already started shifting their water source from surface … …American Journal of Environmental Sciences, Vol. 4, Issue 4 · 31 Aug 2008 · 7,053 accessesView PDFCite
Research ArticleOpen accessIn the abstractAssessing the Effect of a Dumpsite to Groundwater Quality in Payatas, PhilippinesGlenn L. Sia SuThe study assessed and compared the groundwater quality of 14 selected wells continuously used in the with (Payatas) and without dumpsite (Holy Spirit) areas at the Payatas estate, Philippines. Water quality monitoring and analyses of the bio-physico-chemical variables (pH, Total Suspended Solids (TSS), Total Dissolved Solids (TDS), total coliform, conductivity, salinity, nitrate-nitrogen, sulfate, color, total chromium, total lead and total … …American Journal of Environmental Sciences, Vol. 4, Issue 4 · 31 Aug 2008 · 9,466 accessesView PDFCite
Research ArticleOpen accessIn the abstractSalinity, Temperature and Turbidity Structure in the Suva Lagoon, FijiAwnesh Singh, Than AungThe city of Suva is home to nearly a quarter of the population of the Fiji thereby placing a lot of anthropogenic pressure on its lagoon. The Suva lagoon (comprising of Suva Harbour and Laucala Bay) has been subject to substantial sediment inputs generated by erosion and human activities. Freshwater input into the lagoon comes predominantly from the Rewa River, … …American Journal of Environmental Sciences, Vol. 4, Issue 4 · 31 Aug 2008 · 8,992 accessesView PDFCite
Research ArticleOpen accessIn the abstractPrimary Pollutants Monitoring and Modeling Using Chemical Mass Balance (CMB) Around Fahaheel Residential AreaS. M. Al-Salem, A. A. Al-Haddad, A. R. KhanFour major sources of air pollution were identified and modeled using Chemical Mass Balance (CMB) around a residential area. The sources were identified as MAA refinery, downtown area, upstream facilities and main highway road. The sources were analyzed using a series of concentration roses (unfiltered and filtered) executed from the data collected. Data collected included primary and secondary pollutants levels … …American Journal of Environmental Sciences, Vol. 4, Issue 1 · 29 Feb 2008 · 6,742 accessesView PDFCite
Research ArticleOpen accessIn the abstractTotal SO2 Emissions from Power Stations and Evaluation of their Impact in Kuwait Using a Gaussian Plume Dispersion ModelA.A. Ramadan, M. Al-Sudairawi, S. Alhajraf, A.R. KhanIn Kuwait, most of the power stations use fuel oil as the prime source of energy. The sulphur content (S%) of the fuel used as well as other factors have a direct impact on the ground level concentration of sulphur dioxide (SO2) released by power stations into the atmosphere. The SO2 ground level concentration has to meet the environmental standards … …American Journal of Environmental Sciences, Vol. 4, Issue 1 · 29 Feb 2008 · 6,850 accessesView PDFCite
Research ArticleOpen accessIn the abstractStatistical Analysis of Recent Changes in Relative Humidity in JordanAhmed A. Abu-Taleb, Ameen J. Alawneh, Mahmoud M. SmadiThis study examines recent changes in annual and seasonal relative humidity variations in Jordan. The analysis indicates an increasing trend in relative humidity at different stations. The analysis shows a significant increasing trend at Amman Airport Meteorological (AAM) station with a rate of increase 0.13% per year. These increasing trends are statistically significant during summer and autumn seasons. Finally, a … …American Journal of Environmental Sciences, Vol. 3, Issue 2 · 30 Jun 2007 · 7,503 accessesView PDFCite
Research ArticleOpen accessIn the abstractThermal Performance of a Solar Heat Storage Accumulator Used For Greenhouses ConditioningMejdi Hazami, Sami Kooli, Meriam Lazaar et al.The use of solar energy for greenhouse heating has gained an increasing acceptance during the last years. Active solar systems applied to greenhouses can supply a significant part of the heating requirements. However, there are some problems related to the cost of the heat collection unit and the heat storage methods. In this context several techniques were born. The most … …American Journal of Environmental Sciences, Vol. 1, Issue 4 · 31 Dec 2005 · 7,037 accessesView PDFCite
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 · 7,344 accessesView PDFCite