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50 articles for “altitude”
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Research ArticleOpen accessEvery word in the titleSustainable Technology for Agriculture at Extreme Altitudes: Design and Evaluation of a Sprinkler Irrigation System in a Peruvian High Andean CommunityJuan Eduardo Suarez Rivadeneira, Freddy A. Manayay, Daniel Olivier Carranza Lizana et al.In high-altitude agroecosystems, erratic rainfall patterns and steep topography severely constrain crop productivity by exposing plants to soil water deficits during critical phenological stages. This study aimed to enhance the productivity of eleven staple and horticultural crops corn (Zea mays), tomato (Solanum lycopersicum), cucumber (Cucumis sativus), eggplant (Solanum melongena), lettuce (Lactuca sativa), carrot (Daucus carota), barley (Hordeum vulgare), celery (Apium … …OnLine Journal of Biological Sciences, Vol. 26, Issue 4 · 2 Oct 2026 · 645 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEffect of Altitude on Species Diversity and Vegetation Structure of Kigelia africana Parklands in CameroonAwé Djongmo Victor, Vroh Bi Tra Aimé, Noiha Noumi Valery et al.In the Faro Subdivision (North, Cameroon), there are populations of Kigelia africana, known by the common name “Dambale", whose variety is largely unknown. The study's goal is to demonstrate how altitude affects species diversity and vegetation structure in Kigelia africana parklands. To gather information for statistical analysis, a Randomized Complete Block Design (RCBD) was employed. A total of 90 quadrats … …American Journal of Agricultural and Biological Sciences, Vol. 20, Issue 1 · 20 Dec 2025 · 3,176 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleImplementation of Sensor Filters and Altitude Estimation of Unmanned Aerial Vehicle using Kalman FilterMertcan Akın, Aytaç Gören, Ahmed RachidSensor outputs are used when finding the position of an Autonomous Aerial Vehicle (UAV). Outputs such as air pressure, vehicle acceleration or magnetic field help the vehicle decide its attitude and altitude. However, it must also predict the next movement of the vehicle. The Kalman Filter is used to assist observing and predicting the state of a system. To achieve … …Journal of Mechatronics and Robotics, Vol. 5, Issue 1 · 30 Jan 2021 · 8,026 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleImproving 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 PDFCite
Research ArticleOpen accessEvery word in the titleThe Relationship between Habitat Altitude, Enviromental Factors and Morphological Characteristics of Pluchea Indica, Ageratum Conyzoides and Elephantopus ScaberYuliani, Soemarno, Bagyo Yanuwiadi, Amin Setyo LeksonoAsteraceae family has various benefit as herbal medicine and phytochemical affect (biopesticides). It can grow in different habitats but the morphological and physiological characters of Asteraceae depend on the environmental factor. The aims of the study is to describe the variation of height of stems and width of leaves from three species of Asteraceae family (Pluchea indica, Ageratum conyzoides and … …OnLine Journal of Biological Sciences, Vol. 15, Issue 3 · 23 Jul 2015 · 7,842 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleStabilized Controller Design for Attitude and Altitude Controlling of Quad-Rotor Under Disturbance and Noisy ConditionsM. Hassan Tanveer, S. Faiz Ahmed, D. Hazry et al.This article presents a control approach to obtain the better stabilization in attitude and altitude of quad-rotor under different disturbance conditions. In the standard Quad-rotor rotor type UAV, controlling of attitude and altitude is one of the most critical tasks and appropriate controller for stabilization of UAV is essential and necessary. These two controls under various conditions of disturbances was … …American Journal of Applied Sciences, Vol. 10, Issue 8 · 24 Jul 2013 · 8,524 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleThe Effect of High Altitude on Blood Hormones in Male Westar Rats in South Western Saudi ArabiaFahaid H. Al-HashemProblem statement: Living in high altitude areas results in chronic hypoxia, which induces complex metabolic and endocrine adaptations. The current study investigated the endocrine responses of male Westar rats chronically exposed to high altitude-induced hypoxia in Abha City, in Southwestern Saudi Arabia. Approach: The rats were separated in to 2 groups of 10 rats. The first group was kept at … …American Journal of Environmental Sciences, Vol. 6, Issue 3 · 30 Jun 2010 · 7,202 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleDietary Protein and Energy Levels at 3200 m Altitude for Slow-Growing ChickensMariela Ketty Meza-Morveli, Liz Beatriz Chino-Velasquez, Jesús Camero DeLaCuba et al.The extent to which energy and protein (CP) levels can be reduced without impacting productivity in slow-growing chickens remains undetermined. The treatments were conducted to evaluate the effect of dietary CP (17.5, 19, and 20.5%) and energy (2850-2950 kcal ME/kg) on slow-growing chickens using an ideal protein concept at a high altitude (3200 m). We used a total of 144 … …American Journal of Animal and Veterinary Sciences, Vol. 19, Issue 4 · 20 Dec 2024 · 5,275 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleApplication of Meal Feeding and Skip-A-Day Feeding With or Without Probiotics for Broiler Chickens Grown at High-Altitude to Prevent Ascites MortalityAli Saffar, Fariborz KhajaliProblem statement: Ascites is a common rapid-growth-related problem in broiler chickens grown at high altitude where the partial pressure of oxygen is low and is marginally adequate to support the growth performance and ascites-related variables. A mismatch between the growth of oxygen supplying organs and the oxygen demanding organs causes ascites in broiler chickens. In the present study, broilers were … …American Journal of Animal and Veterinary Sciences, Vol. 5, Issue 1 · 31 Mar 2010 · 8,696 accessesView PDFCite
Research ArticleOpen accessIn the keywordsThe Test of Genotype Adaptation of Several Garlic Varieties on the HighlandJulio D.J. Gomes, Eko Widaryanto, Ariffin, Karuniawan Puji WicaksonoThis study aims to determine the growth patterns of four types of local garlic (Allium sativum L.) and to obtain the adaptive appearance of the agronomical characteristics with maximum tuber weight in two different altitude places. The research was conducted in the Borah garlic farmer garden, Wiyurejo village, Pujon subdistrict, Batu city with an altitude of 1200 m above sea … …OnLine Journal of Biological Sciences, Vol. 19, Issue 4 · 31 Oct 2019 · 7,722 accessesView PDFCite