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426 results for “Carbon”
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Research ArticleOpen accessEvery word in the titleCharacterization of Boron Carbonitride (BCN) Thin Films Deposited by Radiofrequency and Microwave Plasma Enhanced Chemical Vapor DepositionM.A. Mannan, M. Nagano, K. Shigezumi et al.Boron carbonitride (BCN) thin films with a thickness of ~4 µm were synthesized on Si (100) substrate by radiofrequency and microwave plasma enhanced chemical vapor deposition using trimethylamine borane [(CH3)3N.BH3)] as a molecular precursor. The microstructures of the films were evaluated using field emission scanning electron microscopy (FE-SEM) and X-ray diffractometry (XRD). Fourier transform infrared spectroscopy (FT-IR) and X-ray photoelectron … …American Journal of Applied Sciences, Vol. 5, Issue 6 · 30 Jun 2008 · 7,371 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleConcentration of Carbon Monoxide in an Enclosed Parking GarageNayef Z. Al-Mutairi, Talal Almutairi, Hamad B. MatarThe findings of this preliminary study could be indicative of all other Kuwait car parks. The extension of the enclosed car park facilities situated in the heavy building cellars will in the near future allow the results of this study to determine the predicted air quality standards and their associated issues for a first time. Further work is required, however, … …American Journal of Engineering and Applied Sciences, Vol. 13, Issue 3 · 11 Aug 2020 · 7,923 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleDevelopment of Ionizing Radiation Sensors Based on Carbon NanotubesKenneth Fontánez, Abraham García, María del C Cotto-Maldonado et al.SWNTs have been efficiently grown on patterned substrates, for its subsequent application to the development of ionizing radiation sensors. SWNTs before and after exposure to X-rays were characterized by Raman and XPS spectroscopy, revealing the appearance of alterations that have been justified as possibly due to the presence of adsorbed oxygen species. These materials have been used for the fabrication … …American Journal of Engineering and Applied Sciences, Vol. 12, Issue 2 · 29 May 2019 · 7,191 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleA Toolkit Approach for Carbon Capture and Storage in Offshore Depleted Gas FieldRaj Deo Tewari, Tan Chee Phuat, Mohd Faizal SedaralitFossil fuels are considered a dependable, cost-effective, and efficient energy source and their utilization has resulted in tremendous growth for humanity. However, it has its downside also. Experts are of the view that present energy systems are unsustainable due to their detrimental impacts on the environment. Oil and gas producers are charged that their infrastructure, utilization of materials and technologies … …American Journal of Environmental Sciences, Vol. 19, Issue 1 · 17 May 2023 · 6,196 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleHepatoprotective Impact Of TLR9 Antagonist ODN 2088 Against Carbon Tetrachloride (CCl4)-Induced Hepatic InjuryBadr AlzahraniThe main objective of this study is to evaluate the hepatoprotective impact of TLR9 antagonist ODN 2088 against carbon tetrachloride (CCl4)-induced acute liver injury. In this study, 24 mice were grouped into four groups. CCl4 was introduced in all groups except for the control group intraperitoneally after pretreatment with ODN 2088 and silymarin for seven days. To assess the liver … …American Journal of Biochemistry and Biotechnology, Vol. 16, Issue 1 · 4 Jan 2020 · 7,659 accessesView PDFCite
Review ArticleOpen accessEvery word in the titleExploring the Potential for Concentration of Nutrients from Urine Using Solar Evaporation and Carbon Dioxide Trapping of AmmoniaTesfamariam Y. Debessai, Ababu T. Tiruneh, Gabriel C. BwembyaNutrients derived from urine such as nitrogen, phosphorous and potassium constitute valuable sources of fertilizers needed for growing plants and as alternatives to commercial fertilizers. Concentration of nutrients available from urine provides advantages of reducing the volume of transportation, the health risk and making nutrient application to soil stable and suitable. An exploratory review of a possible technology for concentration … …American Journal of Engineering and Applied Sciences, Vol. 12, Issue 4 · 28 Oct 2019 · 7,167 accessesView PDFCite
Review ArticleOpen accessEvery word in the titleConversion of Carbon Dioxide: Opportunities and Fundamental ChallengesSajeda A. Al-Saydeh, Syed J. Zaidi, Muftah H. El-NaasThe rising atmospheric levels of carbon dioxide is one of the most urgent challenges facing societies nowadays. There is also great potential in energy carriers and other materials from CO2, with many challenges to overcome. The way to reduce greenhouse gas emissions should be using carbon free sources that do not generate carbon dioxide to the atmosphere. This article reviews … …American Journal of Engineering and Applied Sciences, Vol. 11, Issue 1 · 17 Jan 2018 · 7,630 accessesView PDFCite
Research ArticleOpen accessEvery word in the titlep-n Junction of 1.95 nm Carbon Nanotube: Fabrication, Properties and PerformanceSoheli Farhana, Mohamad Fauzan NoordinCarbon Nanotube (CNT) is the substitution of silicon material for designing of transistor device due to the shortcoming of silicon properties. In this study, 1.95 nm diameter of CNT is fabricated and characterized by analyzing of depletion width and I-V characteristics by realizing the p-n junction behavior. The p-n junction behavior of carbon nanotube is realized by applying self-consistency of … …American Journal of Engineering and Applied Sciences, Vol. 10, Issue 2 · 23 May 2017 · 7,711 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleCarbon Dioxide Utilization for an Enhanced Biohydrogen Production of a Biomass HydrolysateAlma Negre Abug, Young Sook OhBio-hydrogen (H2) production in a thermophilic anaerobic bioreactor with carbon dioxide (CO2) utilization at the headspace was investigated at different ratio of Biomass substrate to Microorganism (B/M). A 3 mL volume of 80% NaOH (m/v) solution was continuously hung at the headspace of the bioreactors to capture carbon dioxide. The utilization of CO2 at its headspace, proved to enhance bio … …American Journal of Environmental Sciences, Vol. 12, Issue 4 · 9 Aug 2016 · 7,229 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleScreening of Yeast Strains for Pectinolytic Activity: Effects of Different Carbon and Nitrogen Sources in Submerged FermentationsMustafa Oskay, Hüsniye Tansel YalçinTwenty yeast strains were screened for pectinolytic activity, among the strains, only nine were positive for pectinase production. The best strain was Kluyveromyces marxianus NRRL-Y-1109 which gave high quantities of pectinase activity, by submerged fermentation. Different parameters such as incubation time, pH (3.5-7), temperature (20-45°C), nitrogen and carbon source, were optimized. The optimal incubation time, temperature and pH for pectinase … …OnLine Journal of Biological Sciences, Vol. 15, Issue 3 · 22 Jun 2015 · 7,812 accessesView PDFCite