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96 results for “condition number”
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Research ArticleOpen accessIn the abstractTransverse Velocity, Transverse Boundary Shear Stress and Flow Deviation in Meandering Open ChannelsYoussef Ismail HafezThis study presents a novel approach for characterizing the mechanics of flow in mildly meandering open channels, specifically focusing on the development of a new vertical distribution equation for transverse velocity. Unlike existing equations in the literature that rely on complex logarithmic or integral forms or infinite series forms, which are impractical for hydraulic engineers, the proposed equation employs ordinary … …American Journal of Environmental Sciences, Vol. 20, Issue 1 · 25 Jul 2024 · 5,058 accessesView PDFCite
Research ArticleOpen accessIn the abstractStudy on the Distribution of Endomycorrhizal Fungi in Some Species Root-Plants in BaliMeitini Wahyuni Proborini, Deny Suhernawan YusupPlants growing on poor soils are commonly associated with endomycorrhizal fungi as a mutualism symbiotic. The fungus takes a role on enhancement of the uptake of soil mineral nutrients particularly phosphorus, thereby enhancing host plant vigor. Despite some of Bali areas particularly in Karangasem and Buleleng have poor soil condition, less study on the endomycorrizhal fungi have been undertaken. The … …OnLine Journal of Biological Sciences, Vol. 17, Issue 4 · 20 Dec 2017 · 7,492 accessesView PDFCite
InvestigationOpen accessIn the abstractRecovered Gases and Bacteria from the Clostridium Genus as Ecological Condition Indicators of Bottom Sediments of the Eastern Donbass Small RiversRoman Gennad'yevich Trubnik, Yuriy Aleksandrovich Fedorov, Ludmila Anatol'yevna NedosekaThe results of determination of methane, total hydrogen sulfide and sulfite reducing clostridia in bottom sediments of small rivers and reservoirs of the Eastern Donbass are presented. The horizontal and vertical distribution of levels of reduced gases in bottom sediments is analyzed. The ecological condition of the bottom sediments was estimated by the clostridia titer and the methane index. The … …OnLine Journal of Biological Sciences, Vol. 17, Issue 3 · 27 Jul 2017 · 7,100 accessesView PDFCite
Review ArticleOpen accessIn the abstractInitiatives to Improve the Quality of Life of HIV Positive Diagnosed Subjects: A Review of Diagnosis, Prognosis and Therapeutics under the Light of Science and EthicsMario Enrique Molina, Jeremías Abou Medelej, Jorgelina Zucchi, Carlos ManasseroThe first cases of AIDS occurred about 1981. There are not fully appropriate therapeutic interventions for treating this medical condition. People who are diagnosed HIV-positive or with AIDS suffer a poor quality of life and receive medication that produces severe adverse reactions. We have analyzed a significant number of papers published in several countries on these topics, and we have … …American Journal of Immunology, Vol. 13, Issue 3 · 3 Aug 2017 · 9,055 accessesView PDFCite
Research ArticleOpen accessIn the abstractAnalysis of the Impact of Acidity and Alkalinity on the Microbial Community Structure in Urban RiversDongmei Shen, Cairui Yu, Xinwei Song et al.To address the impact of low-temperature pH on the microbial community structure of river sediment in urban rivers during winter, the sediment of the Pi River was sampled to investigate. Four experimental samples were designed by varying the pH to 5.0, 7.0, and 8.5 based on the original sample (pH = 5.5) and the characteristics of the microbial community were … …American Journal of Biochemistry and Biotechnology, Vol. 19, Issue 3 · 8 Aug 2023 · 4,959 accessesView PDFCite
Research ArticleOpen accessIn the abstractEFFECT OF DROUGHT CONDITION ON GROWTH, YIELD AND GRAIN QUALITY OF UPLAND RICERaumjit Nokkoul, Teerayut WichitparpThus, the objective of this study was to investigate the effect of drought condition on growth, yield and grain quality of two varieties in upland rice: Nangdam and Lebnok. The experiment was performed at the King Mongkut’s Institute of Technology Ladkrabang, Chumphon Campus, Thailand during July to November, 2010. The study was conducted in randomized complete block design with four … …American Journal of Agricultural and Biological Sciences, Vol. 9, Issue 3 · 26 Jul 2014 · 7,269 accessesView PDFCite
Research ArticleOpen accessIn the abstractEFFECT OF TWISTED RATIO ON FLOW STRUCTURE, HEAT TRANSFER AND THERMAL IMPROVEMENT IN A CIRCULAR TUBE WITH SINGLE TWISTED TAPEWithada Jedsadaratanachai, Amnart BoonloiThe research presents a numerical analysis of laminar fully developed periodic flow and heat transfer in a constant temperature-surfaced circular tube with single twisted tape inserted. The twisted tape is introduced and inserted in the middle of the tested tube. The effects of twisted ratios (y/W = 1, 2, 3, 4, 5 and 6) are presented for Reynolds number (Re) … …Journal of Mathematics and Statistics, Vol. 10, Issue 1 · 11 Feb 2014 · 7,320 accessesView PDFCite
Research ArticleOpen accessIn the abstractOn the Influence of Climate and Socio-Economic Condition to the Dengue Incidences: A Semiparametric Panel Regression ApproachNurma Yussanti, Heri Kuswanto, Mutiah SalamahDengue is one of the most dangerous diseases in the worlds. In particularly in East Java province Indonesia, dengue has been identified as one of the major causes of death. Hence, it is important to investigate the factors that induce the number of dengue incidences in this region. This study examines climate and socio-economic conditions, which are assumed to influence … …American Journal of Environmental Sciences, Vol. 8, Issue 6 · 14 Feb 2013 · 7,206 accessesView PDFCite
Research ArticleOpen accessIn the abstractEvaluation of Wheat-Chickpea Intercrops as Influenced by Nitrogen and Weed ManagementA. Abdulahi, A. Dabbagh Mohammadi Nassab, S. Nasrolahzadeh et al.Wheat and chickpea are most important crops in dryland farming areas of Iran. Weeds have major impact on chickpea grain yield. This experiment was carried out to increase land use efficiency and weed suppression through intercropping in dryland agricultural research station-Sararood, Kermanshah, Iran during 2008-10. The experimental design layout was factorial split plot based on randomized complete block design with … …American Journal of Agricultural and Biological Sciences, Vol. 7, Issue 4 · 4 Dec 2012 · 8,681 accessesView PDFCite
Research ArticleOpen accessIn the abstractAnalytical Modeling of IEEE 802.11e Enhanced Distributed Channel Access under a Non-Saturation ConditionG. Prakash, P. ThangarajProblem statement: The IEEE 802.11e EDCA protocol with different access Categories (ACs) supporting for Quality-of-Service (QoS). Due to internal or external packet collision, the Contention Window (CW) of the station increases the channel idle time under high Bit Error Rate (BER). Approach: In this study, we propose an analytical model for performance evaluation of IEEE 802.11e EDCA scheme under non-saturation … …Journal of Computer Science, Vol. 7, Issue 4 · 4 Apr 2011 · 7,095 accessesView PDFCite