18 articles for “High altitude”

Review ArticleOpen accessIn the abstractNASA Sees First in 2018 the Direct Proof of Ozone Hole RecoveryRelly Victoria Petrescu, Raffaella Aversa, Antonio Apicella, Florian Ion Tiberiu PetrescuFor the first time, scientists have shown through direct observations of the ozone hole by a satellite instrument, built by NASA's Jet Propulsion Laboratory in Pasadena, California, that levels of ozone-destroying chlorine are declining, resulting in less ozone depletion. Measurements show that the decline in chlorine, resulting from an international ban on chlorine-containing human-produced chemicals called Chlorofluorocarbons (CFCs), has resulted … …Journal of Aircraft and Spacecraft Technology, Vol. 2, Issue 1 · 22 Jan 2018 · 10,688 accessesView PDF Cite

Research ArticleOpen accessIn the abstractSeasonal Abundance and Species Composition of Nephotettix spp., in Endemic and Non-Endemic Areas of Rice Tungro Virus Disease in South Sulawesi Province, IndonesiaAndi Nasruddin, Muhammad Danial Rahim, FatahuddinRice tungro disease is semi-persistently transmitted by five species of leafhopper. Nephotettix virescens Distant and N. nigropictus Stal. (Homoptera: Cicadellidae) are predominant species in South Sulawesi with vectoring efficiencies of 83 and 27%, respectively. Relative composition of those species affects the RTV incidence in the field. The purpose of the study was to determine the presence and abundance of those … …OnLine Journal of Biological Sciences, Vol. 16, Issue 3 · 5 Oct 2016 · 7,587 accessesView PDF Cite

Research ArticleOpen accessIn the abstractImproving of Kidney Bean Production by Plant Spacing in Two Different Altitudes at South Central Timor Regency, IndonesiaI Komang Sudarma, Nurul Aini, Karuniawan Puji WicaksosnoThe production of kidney bean as the source of protein and carbohydrate for the people of South Central Timor Regency is still low, therefore the production should be increased. The aim of this study is to evaluate the growth and production of kidney bean based on the different altitudes and spacings. The research was conducted at two different altitudes in … …OnLine Journal of Biological Sciences, Vol. 15, Issue 4 · 10 Nov 2015 · 7,278 accessesView PDF Cite

Research ArticleOpen accessIn the abstractA Cheap Aerial Gas PipelineAlexander A. BolonkinProblem statement: At present time gas pipelines are designed from steel and located on ground surface. That is very expensive and building requests a lot of time. Research and utilization of an old author idea: Design of new cheap aerial pipelines, a large flexible tube deployed at high altitude through neutral seas, for delivery of natural (fuel) gas, water and … …American Journal of Engineering and Applied Sciences, Vol. 2, Issue 4 · 31 Dec 2009 · 7,294 accessesView PDF Cite

Research ArticleOpen accessIn the abstractManaging Air in Olympic CitiesQing Wen Tian, Peter BrimblecombeThe 21st century Olympic Agenda aims to align itself with the concept of sustainable development and has driven improved environmental quality in host cities, such as the Green Games in Sydney 2000 and the planned Beijing 2008 Games and in London 2012 as the Low Carbon Games. Air quality has long been a concern of Olympic mega-cities, although the air … …American Journal of Environmental Sciences, Vol. 4, Issue 5 · 31 Oct 2008 · 7,689 accessesView PDF Cite

Research ArticleOpen accessIn the abstractCharacterization of Fructan Content from Stem Juices of Different Varieties of Agave Atrovirens, Traditionally Used for the Production of Pulque. Production of a Sweetening Syrup by Chemical and Enzymatic ProcessingKaren Gott-Bravo, Arnulfo Pluma-Pluma, Victor Eric López-López et al.Agave atrovirens, the hardiest species of Agave in Mexico, thrives in tough, infertile soils and extreme temperatures across a wide range of altitudes, particularly in impoverished rural areas of Central and Northern Mexico. Its potential for agroindustrial use could offer a pathway to social and economic prosperity for many communities. Traditionally, A. atrovirens is tapped for its sap, known as … …American Journal of Agricultural and Biological Sciences, Vol. 19, Issue 1 · 4 Mar 2025 · 7,670 accessesView PDF Cite

Research ArticleOpen accessIn the abstractPreliminary Design and Performance-Stability Analysis of a Fixed-Wing UAV Using XFLR5Campos Rodriguez Victor Antonio, Su YanThis research aims to find the best airfoil and tail configuration for the designing of a UAV of 30 kg capable of carrying a payload of at least 5 kg; for this purpose, work focuses on the analysis of different airfoils for low Reynolds numbers in specific do airfoils with an under cambered design and capable of reaching high lift … …Journal of Aircraft and Spacecraft Technology, Vol. 7, Issue 1 · 26 Dec 2023 · 8,058 accessesView PDF Cite

Research ArticleOpen accessAll words, across the recordAn Annotated Checklist of Powdery Mildew Fungi (Erysiphaceae) in the Ile-Alatau Mountains (within Kazakhstan)G. Sypabekkyzy, T. Bulgakov et al.The Erysiphaceae family is a diverse group of fungi with complex evolutionary relationships. All previous data for powdery mildew fungi in Ile-Alatau are outdated and needed to be revised due to changes in the Erysiphaceae taxonomy. The purpose of our research was to revise all data and to compile an actual checklist of Erysiphaceae in the Ile-Alatau based on revisions … …OnLine Journal of Biological Sciences, Vol. 24, Issue 1 · 14 Nov 2023 · 5,623 accessesView PDF Cite