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50 articles for “altitude”
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Review ArticleOpen accessIn the keywordsProject HARPRelly Victoria Petrescu, Raffaella Aversa, Bilal Akash et al.The HARP project, abbreviated from the High Altitude Project, was considered a joint project of the United States Department of Defense and Canada's Department of Defense, originally designed to study low-cost re-entry vehicles. Generally, such projects used rocket launchers to launch missiles, costly and often inefficient. The HARP project used a non-rocket space launch method based on a very large … …Journal of Aircraft and Spacecraft Technology, Vol. 1, Issue 4 · 7 Nov 2017 · 19,789 accessesView PDFCite
Research ArticleOpen accessIn the keywordsThe Solar Tracking System by Using Digital Solar Position SensorSingthong PattanasethanonProblem statement: An optimal control on two axes and design for solar tracker which called altitude and azimuth is challenge. Approach: The phototransistor with the shade that blocks the screen was employed as a detector of solar beam radiation. The height of the screen determined the sensitivity operation or period of tracking in this solar tracker. The phototransistor is particularly … …American Journal of Engineering and Applied Sciences, Vol. 3, Issue 4 · 5 Nov 2010 · 10,171 accessesView PDFCite
Research ArticleOpen accessIn the keywordsEvaluating Plant Species Diversity and Physiographical Factors in Natural Broad Leaf ForestSeyed Armin HashemiProblem statement: Species diversity is one of the most important specifications of biological societies. Diversity of organisms, measurement of variety and examination of those hypotheses that are about reasons of diversity are such as affairs that have been desired by the ecologists for a long time. Approach: In this research, diversity of plant species in forest region, numbers of 60 … …American Journal of Environmental Sciences, Vol. 6, Issue 1 · 28 Feb 2010 · 7,609 accessesView PDFCite
Research ArticleOpen accessIn the keywordsA 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 PDFCite
Literature ReviewOpen accessIn the keywordsAbout Bell Helicopter FCX-001 Concept Aircraft-A Short ReviewRelly Victoria Petrescu, Raffaella Aversa, Bilal Akash et al.Bell Helicopter is always preparing beautiful surprises for us, so this year has not been outdone and has revealed its vision of its future aircraft model FCX-001, a true vertical elevator, ment to can climb to high altitudes in a record time, with an enviable dynamics and maneuverability. The first appearance of the new model FCX-001 took place at Heli … …Journal of Aircraft and Spacecraft Technology, Vol. 1, Issue 2 · 29 Jun 2017 · 14,021 accessesView PDFCite
Research ArticleOpen accessIn the abstractDose-Dependent Neurotoxic Effects of Monosodium Glutamate and its Potential Genetic Transmission in MiceYanan Zou, Qiong Liang, Lu Liu et al.This study aimed to preliminarily investigated the neurotoxic effects of monosodium glutamate on mice and their pups, and the potential possibility of a genetic mechanism influencing the pups. In this study, mice were given different doses of Monosodium Glutamate (MSG) at doses of 2.0 or 4.0 g/kg body weight for 10 continuous days, and its impacts on both the mice … …American Journal of Biochemistry and Biotechnology, Vol. 21, Issue 3 · 14 Nov 2025 · 3,031 accessesView PDFCite
Research ArticleOpen accessIn the abstractGrowth Characters, Physiology and Leaf Fall Disease Resistance in Immature Plants of Rubber (Hevea brasiliensis) IRR 400 Series ClonesRahayu Novrina Rosa, Mohammad Basyuni et al.Superior rubber clones have been used in Indonesia, but productivity achievements are low. The area and rubber production in 2020 was 3,316,047 ha with a productivity of 1,022 kg/ha. The low productivity is caused use of seedling materials. Adaptation testing is one of the stages for selecting superior rubber clones in various environmental conditions, the influencing factors are clone or … …OnLine Journal of Biological Sciences, Vol. 24, Issue 3 · 22 Mar 2024 · 5,300 accessesView PDFCite
Research ArticleOpen accessIn the abstractAnalysis and Design of Protocol for the Reconstruction of Computer Field Model Using Dron and PhotogrammetryBoris Tunjić, Andrija Bernik, Andrej ČepOne of the main challenges in aerial photogrammetry is the lack of standardization in the process of data integration, which is the first step in 3D reconstruction. This study analyses the influence of the distance from the camera to the subject of the recording, the influence of different overlap percentages in photography as well as the difference between the three … …Journal of Computer Science, Vol. 19, Issue 12 · 15 Nov 2023 · 5,031 accessesView PDFCite
Research ArticleOpen accessIn the abstractRelationship between Laboratory Germination and Biometric Parameters of Betula jarmolenkoana Golosk. AgletsZhandos Rakymbekov, Kurmankul Abayeva, Daniyar Dosmanbetov et al.This study evaluates the relationship between laboratory germination and biometric parameters of aglets of the critically endangered birch tree species Betula jarmolenkoana Golosk (Yarmolenko birch). The Yarmolenko birch is a very rare, narrowly endemic species, growing at an altitude of 1,900-2,100 m above sea level and only in the basins of three rivers (Kakpak, Bayynkol, and Tekes) in the Almaty … …OnLine Journal of Biological Sciences, Vol. 23, Issue 1 · 1 Mar 2023 · 4,912 accessesView PDFCite
Research ArticleOpen accessIn the abstractCollision Avoidance Modelling in Airline Traffic Based on the Change of Airplane Movements and Dynamic CloudsYudhi Purwananto, Chastine Fatichah, Waskitho Wibisono et al.An Air Traffic Controller (ATC) system aims to manage airline traffic to prevent collision of the airplane, called the Collision Avoidance (CA). The study on CA, called Conflict Detection and Resolution (CDR), becomes more critical as the airline traffic has grown each year significantly. Previous studies used optimization algorithms for CDR and did not involve the presence of cumulonimbus clouds. … …Journal of Computer Science, Vol. 17, Issue 1 · 20 Jan 2021 · 7,237 accessesView PDFCite