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54 articles for “Climate Changes”
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Research ArticleOpen accessIn the abstractContributions to the Stirling Engine StudyFlorian Ion Tiberiu PetrescuIn the process of transforming thermal energy into mechanical work, among the known thermal machines, the Stirling engine is the one that can achieve the highest yield (theoretically up to the maximum yield of the Carnot cycle), although in practice it is reduced by the properties of gas and materials used such as friction coefficient, thermal conductivity, melting point, breaking … …American Journal of Engineering and Applied Sciences, Vol. 11, Issue 4 · 22 Nov 2018 · 10,172 accessesView PDFCite
Research ArticleOpen accessIn the abstractUnder WaterRaffaella Aversa, Relly Victoria Petrescu, Antonio Apicella, Florian Ion Tiberiu PetrescuWith a 361 million square Km surface and a volume of 1370 million of cubic kilo, world seas and oceans have represented and still remain the privileged space for living species evolution. Other than being the 70% of the Earth surface, water environment, contrary to the terrestrial one where life essentially develops in 2 dimensions, is a 3D fully volume … …OnLine Journal of Biological Sciences, Vol. 17, Issue 2 · 10 Jun 2017 · 7,231 accessesView PDFCite
InvestigationOpen accessIn the abstractDesign and Realization of Pre-Amplifier and Filters for on-Board Radar SystemN. Dinesh Kumar, R. Divya Ravali, Panchavati R. SrirekhaToday's warfare situation incorporates a considerable measure of innovative weaponry and every nation is attempting to outmaneuver the other utilizing high engineering, henceforth it is of most extreme criticalness to be at the front line of the bleeding edge innovation and having the best weapons conceivable to secure the country. One of the innovations which give the one having it … …American Journal of Engineering and Applied Sciences, Vol. 8, Issue 4 · 9 Nov 2015 · 7,803 accessesView PDFCite
Research ArticleOpen accessIn the abstractEvaluating Rainwater Harvesting System for School BuildingsManoj K. Jha, Nishant ShahFreshwater is becoming limited as our climate and weather pattern changes. In this study, a rainwater harvesting system was evaluated for collecting and utilizing rainwater for uses in non-potable purposes. Water-Balance was carried out for two design scenarios: Single tank and double tank, for irrigation in all main fields (202,724 ft2). The irrigation demand for the entire field was estimated … …American Journal of Environmental Sciences, Vol. 11, Issue 4 · 22 Sep 2015 · 8,909 accessesView PDFCite
Research ArticleOpen accessIn the abstractSEASONAL DROUGHT DYNAMICS IN EL-BEHEIRA GOVERNORATE, EGYPTAmr Mossad, Hazem S. Mehawed, Ahmed El-ArabyDrought is the most damaging climate-related hazards due to the prolonged absence of precipitation. Therefore, understanding the drought dynamics is important for irrigation water management to mitigate the negative impacts on agriculture. In this study, Standardized Precipitation Index (SPI) and Standardized Precipitation Evapotranspiration Index (SPEI) were used as effective tools for tracking the changes of water status occurred at five … …American Journal of Environmental Sciences, Vol. 10, Issue 2 · 4 Apr 2014 · 7,621 accessesView PDFCite
Research ArticleOpen accessIn the abstractInvestigation of Vegetation Dynamics using Long-Term Normalized Difference Vegetation Index Time-SeriesTamara Bellone, Piero Boccardo, Francesca PerezProblem statement: The Normalized Difference Vegetation Index (NDVI) is the most extensively used satellite-derived index of vegetation health and density. Since climate is one of the most important factors affecting vegetation condition, satellite-derived vegetation indexes have been often used to evaluate climatic and environmental changes at regional and global scale. The proposed study attempted to investigate the temporal vegetation dynamics … …American Journal of Environmental Sciences, Vol. 5, Issue 4 · 31 Aug 2009 · 7,404 accessesView PDFCite
Research ArticleOpen accessIn the abstractHydrochemical Differentiation of Salinisation Process of the Water in Endoreic Semi-Arid Basin: Case of Rémila Basin, AlgeriaHouha Belgacem, Kherici Nacer, Kachi Slimane, Valles VincentThe aim of this study is to determine and treat a hierarchical basis of the various mechanisms responsible for the space variation of the water quality in a endoreic semi-arid basin. The water chemistry showed a large variability in space and time. The total dissolved solid (TDS) in water increases from upstream to downstream due to the effect of the … …American Journal of Applied Sciences, Vol. 5, Issue 7 · 31 Jul 2008 · 7,307 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffect of UV-C on Drought Tolerance of Alfalfa (Medicago sativa) CallusAli Akbar Ehsanpour, Roya RazavizadehWater stress and unfavorable climate decrease the growth and development of plant globally. Medicago is a valuable plant as a source of food for animal, foliage and for medicine. Since, Iran is located in a dry area; consequently, the study of plant responses to water stress is important. In this research UV-C radiation was used to induce physiological and genetic … …American Journal of Biochemistry and Biotechnology, Vol. 1, Issue 2 · 30 Jun 2005 · 6,805 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordLong-Term Characterization of Landfill Leachate: Impacts of the Tropical Climate on its CompositionJorge Luiz da Paixão Filho, Miriam Gonçalves MiguelThe disposal of Municipal Solid Waste (MSW) in sanitary landfills produces leachate, whose composition changes depending on the microbial community and the environmental conditions. However, these changes cannot be observed in sanitary landfill because of the superposition of cells, which makes it difficult to determinate the relationship among the phases of biodegradation of MSW, the composition of the leachate and … …American Journal of Environmental Sciences, Vol. 13, Issue 2 · 14 Mar 2017 · 8,573 accessesView PDFCite
Research ArticleOpen accessAll words, across the recordHEAT INTENSITY OF URBAN BUILT ENVIRONMENT IN HOT HUMID CLIMATE REGIONBeta Paramita, Hiroatsu FukudaLarge numbers of inhabitants in a dense area require land coverage for sheltering purposes. The anthropogenic heat emission potentially reduces ventilation of urban areas and significantly brings changes in air temperature. This study is aimed at finding the correlations between urban form and the alteration of urban microclimate in different land-uses. This study has been carried out in Bandung, Indonesia, … …American Journal of Environmental Sciences, Vol. 10, Issue 3 · 16 Apr 2014 · 7,812 accessesView PDFCite