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60 results for “Sediments”
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Research ArticleOpen accessIn the abstractThe Diatom Stratigraphy of Rawapening Lake, Implying Eutrophication HistoryTri Retnaningsih Soeprobowati, Suwarno Hadisusanto, Peter Gell, Atun ZawadskiProblem statement: The use of diatoms to reconstruct past ecological conditions in lakes is well established. Diatoms are microscopic algae that forms siliceous frustules which allow them to preserve well in sediments. Rawapening Lake is one of 15 Indonesian lakes identified as 2010-2014 National Priority Lakes. Naturally, Rawapening is a tectono-volcanic lake. In the early 1900s, the sole outlet of … …American Journal of Environmental Sciences, Vol. 8, Issue 3 · 15 Jun 2012 · 7,716 accessesView PDFCite
Research ArticleOpen accessIn the abstractHeavy Metals Analysis and Sediment Quality Values in Urban LakesAboud S. Jumbe, N. NandiniProblem statement: The objective of this research was to evaluate the degree of heavy metal contamination in lakes and the extent to which the sediment quality of the lakes of Bangalore city has deteriorated. Approach: In this study, heavy metals such as Cd, Co, Cu, Cr, Mn, Pb, Ni and Zn in lake bed sediments were analyzed using comparative sediment … …American Journal of Environmental Sciences, Vol. 5, Issue 6 · 31 Dec 2009 · 9,571 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Groundwater Resources of the Morainic Amphitheatre: A Case Study in PiedmontMassimo Vincenzo Civita, Marina De Maio, Adriano FiorucciProblem statement: The risk of groundwater pollution and preservation of groundwater quality of these resources are extremely important topics, particularly at the present time in which water is becoming a limitative factor for land development. In this context the main objective of this study was the evaluation of the pollution vulnerability of groundwater in the Ivrea Morainic Amphitheatre (IMA), situated … …American Journal of Environmental Sciences, Vol. 5, Issue 4 · 31 Aug 2009 · 7,193 accessesView PDFCite
Research ArticleOpen accessIn the abstractGeochemistry of Sediment in the Major Estuarine Mangrove Forest of Terengganu Region, MalaysiaB.Y. Kamaruzzaman, M.C. Ong, M.S.Noor Azhar et al.Surface sediments collected from seven estuarine mangrove forests of Terengganu region (100 sampling points) were anaylzed for Pb, Cu and Zn using the sensitive Inductively Coupled Plasma Mass Spectrometer (ICP-MS). The average concentration of Pb, Cu and Zn were 10.5±7.12 µg g-1 dry weights, 31.1±16.5 µg g-1 dry weights and 20.8±13.3 µg g-1 dry weights, respectively. The statistical analysis of … …American Journal of Applied Sciences, Vol. 5, Issue 12 · 31 Dec 2008 · 7,321 accessesView PDFCite
Research ArticleOpen accessIn the abstractToxicity of Reference Sediment SamplesK. R. Beg, S. AliThis study was done to determine toxicity of certified reference sediment to be used for quality assurance in sediment toxicity testing program. Certified Reference Harbor Sediment (HS-4B for PAHs) and Estuarine Sediment (LGC-6137 for Trace Metals) were procured commercially from LGC Company, UK, and repeatedly analyzed against solid phase Microtox toxicity assay to determine EC50 values. Both PAHs rich and … …American Journal of Environmental Sciences, Vol. 4, Issue 4 · 31 Aug 2008 · 6,718 accessesView PDFCite
Research ArticleOpen accessIn the abstractLead Phytotoxicity Induced Changes in Biochemical Markers in Germination and Seedlings in Durum Wheat Triticum durum Desf. Cv.Vitron and GtaSoraya Slimani, Mokhtar Boudelaa, Saddek Abdelmadjid et al.Among the heavy metals most commonly found on land, lead is a strongly represented pollutant in soil and sediments. It is easily absorbed and accumulated in different parts of plants. On the macroscopic scale, lead causes unfavorable effects on plants. First and in the event of excess, it may exert toxicity affecting several stages of germination development in leaf formation … …American Journal of Environmental Sciences, Vol. 13, Issue 4 · 6 Sep 2017 · 7,480 accessesView PDFCite
Research ArticleOpen accessIn the abstractStatistical Analysis of Geothermal Data of an Oil Field, in Parts of Niger Delta, NigeriaEmujakporue Godwin Omokenu, Leonard I. NwosuGeothermal gradient and heat flow were computed from bottom hole temperatures in an oil field in Niger Delta, Nigeria. The statistical analysis of computed geothermal data was carried out. The computed geothermal gradient vary from 17.3±0.14 to 24.33±0.70°C/Km with an average of 22.24±0.57°C/km. The heat flow ranges from 38.06±0.31 to 56.39±2.41 mWm-2 with an average of 50.15±1.25 mWm-2. The computed … …Current Research in Geoscience, Vol. 6, Issue 2 · 26 Sep 2016 · 7,963 accessesView PDFCite
Research ArticleOpen accessIn the abstractField Data Based Method for Predicting Long-Term SettlementsJianping Jiang, Qingsheng Chen, Sanjay NimbalkarThe estimation of the long-term foundation settlement in soft soil is very complex, which is attributed to a number of uncertainties associated with various factors, such as: (i) The compressibility parameters obtained in the laboratory from samples of relatively small size that are more homogeneous compared to heterogeneous field sediments in which various soil types may be interlayered at random … …American Journal of Engineering and Applied Sciences, Vol. 9, Issue 3 · 22 Feb 2016 · 8,249 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Quaternary Mammals from Kozhamzhar Locality (Pavlodar Region, Kazakhstan)Andrei Valerievich Shpansky, Valentina Nurmagаmbetovna Aliyassova, Svetlana Anatolievna IlyinaA new locality of fossil mammals near Kozhamzhar in Pavlodar Priirtysh Region has been described. The article provides the description of the quaternary sediments section found in the outcrop near Kozhamzhar. In the Karginian Age (MIS 3) alluvial deposits of the described locality we found the remains of Elasmotherium sibiricum, Mammuthus ex gr. trogontherii-chosaricus, Mammuthus primigenius, Bison sp. AMS Radiocarbon … …American Journal of Applied Sciences, Vol. 13, Issue 2 · 15 Feb 2016 · 31,913 accessesView PDFCite
Research ArticleOpen accessIn the abstractSedimentology and Depositional Environment of D2 Sand in Part of Greater Ughelli Depobelt, Onshore Niger Delta, NigeriaPrince Suka Momta, Jonathan O. Omoboh, Minapuye I. OdigiThe sedimentology and depositional environment of D2 sand in part of the Greater Ughelli depobelt have been studied using well logs and core data. Three wells were correlated to establish the lateral continuity of the D2 sand across the field and standard gamma ray log trends was used to infer depositional environments. Cored section of well B was described to … …American Journal of Engineering and Applied Sciences, Vol. 8, Issue 4 · 19 Sep 2015 · 8,585 accessesView PDFCite