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Research ArticleOpen accessIn the abstractHybrid Photovoltaic Thermal (PV/T) Air and Water Based Solar Collectors Suitable for Building Integrated ApplicationsAdnan Ibrahim, Goh Li Jin, Roonak Daghigh et al.Problem statement: Experiments have been conducted to investigate the effect of mass flow rates on the electrical, thermal and combined of photovoltaic thermal efficiencies of the hybrid collectors. Approach: Two photovoltaic thermal solar collectors were designed and fabricated. The first collector, known as spiral flow absorber collector, designed to generate hot water and electricity. The second collector, known as single … …American Journal of Environmental Sciences, Vol. 5, Issue 5 · 31 Oct 2009 · 8,091 accessesView PDFCite
Research ArticleOpen accessIn the abstractOn the Predictability of Risk Box Approach by Genetic Programming Method for Bankruptcy PredictionAlireza Bahiraie, Noor Akma bt Ibrahim, A. K.M. AzharProblem statement: Theoretical based data representation is an important tool for model selection and interpretations in bankruptcy analysis since the numerical representation are much less transparent. Some methodological problems concerning financial ratios such as non-proportionality, non-asymetricity, non-scalicity are solved in this study and we presented a complementary technique for empirical analysis of financial ratios and bankruptcy risk. Approach: This study … …American Journal of Applied Sciences, Vol. 6, Issue 9 · 30 Sep 2009 · 7,948 accessesView PDFCite
Research ArticleOpen accessIn the abstractWeb-based "Questions-Bank" System to Improve E-Learning Education in Qatari SchoolHosam F. El-Sofany, Noor Al-Jaidah, Shaima Ibrahim, Salha Al-kubaisiProblem statement: This study described the analysis, design and implementation of the Questions-Bank system that allows the students of primary, preparatory and secondary schools to take web-based quizzes and exams, to download course reviews and previous exams. "Questions-Bank", means that each question has a weight and area of knowledge deals with it. The system facilitated generation of automatic, balanced and … …Journal of Computer Science, Vol. 5, Issue 2 · 28 Feb 2009 · 7,825 accessesView PDFCite
Research ArticleOpen accessIn the abstractWeb-based Projects Evaluation Management SystemS. Al-Zoubi, Z. M. Alfawaer, M. Al-ZoubiThis project designs a Web-based evaluation management system for the College of Arts and Sciences (CAS). Problem statement: The Msc students in College of Arts and Sciences (CAS) in applied sciences had to take their final project as a project paper in order to fulfill the requirements of their programs and be able to graduate. The final project was evaluated … …Journal of Computer Science, Vol. 4, Issue 11 · 30 Nov 2008 · 6,775 accessesView PDFCite
Research ArticleOpen accessIn the abstractCharacterization of Transparent Conductive Thin Films of In 2O 3:Sn by Spray Pyrolysis TechniqueSeyed Mohammad Rozati, Tohid GanjHighly conductive transparent In2O3:Sn (ITO) thin films were prepared onto glass substrate using the spray pyrolysis technique. It is observed that these films are polycrystalline with the preferred orientation of [400]. The extent of this orientation increases with substrate temperature. The results show that films with a sheet resistance as low as 35Ω/cm2 and with a transmittance as high as … …American Journal of Applied Sciences, Vol. 2, Issue 6 · 30 Jun 2005 · 6,763 accessesView PDFCite
Research ArticleOpen accessIn the abstractMechanical and Microstructural Characterization of Plasma Welded Joints of 18 Ni-300 Maraging Steels Subjected to RepairsPaulo Roberto Sakai, Deivid Ferreira da Silva, Milton Sérgio Fernandes de Lima et al.Among the ultra-high strength structural steels, 18Ni-300 Maraging steel is one of the most important for the naval and aerospace industries. For example, in the manufacture of motor envelopes Plasma Arc Welding-PAW processes are used with the keyhole technique. The joints are regions of high responsibility and undergo a non-destructive inspection according to the standardized technical criteria. If there is … …Journal of Aircraft and Spacecraft Technology, Vol. 5, Issue 1 · 19 Apr 2021 · 7,599 accessesView PDFCite
Review ArticleOpen accessIn the abstractAbout Supersonic Flight and Mach 3 FlyingRelly Victoria Virgil PetrescuAerospace-BAC Concorde was a supersonic passenger aircraft. It was the result of a government treaty between the French and British governments, combining the efforts of Aerospace and British Aircraft Corporation. With only 20 aircraft built in total, the cost of the development phase was a major economic failure. In addition, Air France and British Airways were subsidized by the government … …American Journal of Engineering and Applied Sciences, Vol. 13, Issue 3 · 28 Aug 2020 · 8,926 accessesView PDFCite
Research ArticleOpen accessIn the abstractcDNA Cloning and Characterization of the House Dust Mite Allergen Sui p 2Joshua Evans M. Bajao, John Donnie A. RamosSuidasia pontifica (Sp) is a House Dust Mite (HDM) species found in tropical urban residential areas which causes sensitization of up to 75% of allergic patients. Cloning of allergens from Sp is a significant initial step in understanding the clinical significance of this HDM species. The study describes the cloning and in silico characterization of the group 2 allergen gene … …American Journal of Biochemistry and Biotechnology, Vol. 16, Issue 2 · 14 May 2020 · 7,885 accessesView PDFCite
Research ArticleOpen accessIn the abstractFiber Laser Beam Welding Between Niobium and TitaniumRafael Humberto de Mota Siqueira, Isabela Atilio, Caroline Cristine de Andrade Ferreira et al.Niobium and titanium are difficult to weld because of many factors, such as their tendency to oxidize and burn and the relatively high melting temperatures. Here, fiber laser beam welding has been proposed to weld Nb and Ti sheets in overlap geometry. In the current research, one millimeter thick CP-Ti was placed at the top and a 3 mm pure … …Journal of Aircraft and Spacecraft Technology, Vol. 4, Issue 1 · 9 Mar 2020 · 7,715 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffect of Composted Animal Manure as Fertilizer on Productivity of Azolla Pinnata Grown in Earthen PondsRistianto Utomo, Cuk Tri Noviandi, Nafiatul Umami, Adhitya PermadiAzolla pinnata contains a high nutritional value with a high protein content of 25%, so it can be used as an alternative to animal feed. The low production of Azolla is caused by the suboptimal use of fertilizers. This study aims were to determine the type of manure (composted manure from poultry, goats, and rabbit) which was the most optimal … …OnLine Journal of Biological Sciences, Vol. 19, Issue 4 · 9 Nov 2019 · 11,061 accessesView PDFCite