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648 articles for “media”
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Research ArticleOpen accessEvery word in the titleMNM1D: A Numerical Code for Colloid Transport in Porous Media: Implementation and ValidationTiziana Tosco, Rajandrea SethiProblem statement: Understanding the mechanisms that control the transport and fate of colloidal particles in subsurface environments is a crucial issue faced by several researchers in the last years. In many cases, natural colloids have been shown to play a major role in the spreading of strongly sorbing contaminants, while manufactured micro-and nanoparticles, which are nowadays widely spread in the … …American Journal of Environmental Sciences, Vol. 5, Issue 4 · 31 Aug 2009 · 8,291 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleParallel Performance Monitoring Service for Dynamically Composed Media Web ServicesG. Maria Kalavathy, P. SeethalakshmiProblem statement: As distributed real-time multimedia services are accessed by users from different locations, the run-time performance must be managed and monitored to get a clear view of how media web services perform within their operational environments and to perform control actions to modify and adjust the their behavior. Otherwise it will provide negative effects on the reputation of service … …Journal of Computer Science, Vol. 5, Issue 7 · 31 Jul 2009 · 7,188 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleNumerical and Analytical Study of Exhaust Gases Flow in Porous Media with Applications to Diesel Particulate FiltersSuleiman Abu-EinProblem statement: The importance of diesel particulate filter has been increased later because of its ability in making emission reduction of the exhaust gasses. Diesel Particulate Filters (DPF) do two important jobs: gas emissions reduction and noise reduction, the pores spread inside the DPF store some gases and soot emissions and on the other side it prevents some sound or … …American Journal of Engineering and Applied Sciences, Vol. 2, Issue 1 · 31 Mar 2009 · 8,161 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleChemical and Physical Characteristics of Cocopeat-Based Media Mixtures and Their Effects on the Growth and Development of Celosia cristataYahya Awang, Anieza Shazmi Shaharom, Rosli B. Mohamad, Ahmad SelamatProblem statement: Cocopeat is considered as a good growing media component with acceptable pH, electrical conductivity and other chemical attributes but it has been recognized to have high water holding capacity which causes poor air-water relationship, leading to low aeration within the medium, thus affecting the oxygen diffusion to the roots. Incorporation of coarser materials into cocopeat could improve the … …American Journal of Agricultural and Biological Sciences, Vol. 4, Issue 1 · 31 Mar 2009 · 19,001 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleNanowire Mediated Effect of Interspecies Electron Transfer in Organic Solid Waste Co-FermentationJingkang Chen, Daicheng Liu et al.Low efficiency of Interspecific Electron Transfer (IET) among microorganisms constrains organic matter degradation and biogas production in organic solid waste co‑fermentation. This work investigates the underlying bottleneck and evaluates the nanowire‑mediated enhancement of IET. Surface plasmon resonance‑enhanced electrochemical impedance spectroscopy coupled with metagenomic and metatranscriptomic sequencing was applied to regulate endogenous nanowire formation in anaerobic reactors. Surface Plasmon Resonance-Enhanced Electrochemical … …American Journal of Biochemistry and Biotechnology, Vol. 22, Issue 3 · 9 Oct 2026 · 591 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleThe Chain Mediating Role of Technology Self-Efficacy and Attitudes in Online Learning EnvironmentsJie Gao, Dolores D. Borras, Beverly T. CaigaThis study investigates the mediating role of technology self-efficacy and attitudes in online learning environments among university students. Specifically, we examined how students' technology self-efficacy, attitudes toward online learning, and perceptions of course appropriateness influence online learning outcomes. Data were collected via questionnaire survey from students enrolled in public and private universities (N = [specify number]). Structural equation modeling with … …American Journal of Biochemistry and Biotechnology, Vol. 21, Issue 4 · 16 Feb 2026 · 1,601 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleA GPU-Based Genetic Algorithm for the Multiple Allocation P-Hub Median ProblemAchraf Berrajaa, Ayyoub El Outmani, Abdelhamid BenainiAs the sizes of realistic hub location problems increase as time goes on (reaching thousands of nodes currently) this makes such problems difficult to solve in a reasonable time using conventional computers. This study aims to show that such problems may be solved in a short computing time and with high-quality solutions using the computational power of the GPU (actually … …Journal of Computer Science, Vol. 19, Issue 5 · 28 Apr 2023 · 6,267 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleSurvival and Mediation Analysis with Correlated FrailtyUsha S Govindarajulu, Mohsin QadriMany studies have focused on mediation effects, but fewer have focused on these in a time-to-event analysis and even fewer have focused on these effects in a survival model with frailty effects. The purpose of this study was to show unique modeling of correlated frailty effects with mediation and to demonstrate their use through simulations as well as on a … …Current Research in Biostatistics, Vol. 9, Issue 1 · 1 Dec 2019 · 13,005 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleColor Doppler Evaluation of Isovolumetric Relaxation Time and of Signals Arising from Axons of the Median Nerve as a Means to Evaluate Mitochondrial Functionality in the Context of Immunotherapy of Cancer and Chronic Conditions Associated with Mitochondrial DysfunctionStefania Pacini, Marco RuggieroReactive Oxygen Species (ROS) arising from the disruption of mitochondrial respiration act as endogenous mutagens and tumor promoters. When production of ROS exceeds the capacity of DNA repair mechanisms, random mutations and aneuploidy ensue, thousands of genes become unbalanced and genetic/epigenetic chain reactions lead to progressive aneuploidy with only two outcomes: karyotypes so altered that are not viable or karyotypes … …American Journal of Immunology, Vol. 15, Issue 1 · 12 Oct 2019 · 9,690 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleOne Real-Time Fluorescent Loop-Mediated Isothermal Amplification Combined with Propidium Monoazide for Detection of Viable Vibrio Parahaemolyticus in SeafoodHuanteng Yu, Jiehong Fang, Biao Ma et al.Vibrio parahaemolyticus is one of the crucial foodborne pathogens in the world. At present, the rapid detection methods for V. parahaemolyticus cannot distinguish between dead and viable cells and false positive results may occur. In this study, one rapid and accurate method that combines Propidium Monoazide (PMA) with real-time fluorescent loop-mediated isothermal ampli?cation (LAMP) using SYTO-16 dye was developed to … …American Journal of Biochemistry and Biotechnology, Vol. 15, Issue 2 · 26 Jun 2019 · 7,589 accessesView PDFCite