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341 results for “Peru”
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Research ArticleOpen accessEvery word in the titleImproved Compost Production from Fruit and Vegetable Market Waste: A Case Study in Bagua, Amazonas (Peru)Juan Eduardo Suarez Rivadeneira, Freddy A. Manayay, Wilfredo Ruiz Camacho, Juan Francisco Robles RuizInadequate management of organic solid waste in municipal markets represents a critical environmental challenge in tropical developing regions, where high humidity (>80%) and elevated temperatures (>25°C) accelerate decomposition, generating leachate and greenhouse gas emissions. In Peru, over 50% of municipal waste is organic, yet less than 20% is valorised through composting, highlighting a substantial technological gap. This study evaluated an … …OnLine Journal of Biological Sciences, Vol. 26, Issue 3 · 11 Aug 2026 · 1,262 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleMechanical Scarification and Sucrose Priming Overcome Physical Dormancy in Caesalpinia spinosa (Tara) Seeds from the Peruvian HighlandsWilfredo Ruiz-Camacho, Ítalo Maldonado Ramirez, Juan Eduardo Suarez Rivadeneira et al.Caesalpinia spinose (tara) is a leguminous tree native to the Peruvian Andes-Amazon region, valued for soil restoration and high tannin content. However, its large-scale propagation is constrained by physical seed dormancy caused by a hard and impermeable seed coat. This study evaluated six pre-germination treatments to break dormancy and enhance early seedling development under local agroclimatic conditions in Magdalena District, … …OnLine Journal of Biological Sciences, Vol. 26, Issue 3 · 12 Aug 2026 · 1,204 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleIntegrated Assessment of Water Resource Sustainability in the Upper Amojú River Basin, Northern Peruvian AndesJuan Eduardo Suarez-Rivadeneira, Freddy A. Manayay, Mayra Pamela Musayón Diaz et al.This study presents a comprehensive, statistically robust assessment of water resource sustainability in the upper section of the Amojú River Basin, Province of Jaén northern Peruvian Andes, using the Sarandón multi-cirteria methodology. A stratified convenience sample of n = 887 households distributed across 22 localities was surveyed, achieving a margin of error of ±2.61% at the 95% confidence level (finite-population … …OnLine Journal of Biological Sciences, Vol. 26, Issue 4 · 26 Sep 2026 · 719 accessesView PDFCite
Research ArticleOpen accessEvery word in the titlePotential Zones of Peruvanthanam and Valiyathodu Sub-Watersheds of Manimala River BasinVadakkepurakkal Rekha, Aikara Varkey George, Rita MendezGroundwater is a dynamic and replenishable natural resource. But in hard rock terrains, its availability is of limited extent. In sub-watershed studies, remote sensing and GIS techniques have the advantages of spatial, spectral and temporal data, covering large and inaccessible areas within a short span of time. Thus this technique has become a very handy tool in assessing and monitoring … …American Journal of Environmental Sciences, Vol. 9, Issue 1 · 20 Feb 2013 · 7,389 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleOat Pellets and Hay in Alpacas of Pastures of the Andean Zone, PerúMarcial Enciso Altamirano, Jimny Núñez Delgado, Alejandrina Sotelo-Méndez et al.The research was carried out at the INIA's Quimsachata experimental center in Puno, Peru; with the purpose of evaluating oat pellets and hay in Alpaca pastures in the Andean Zone. A total of Sixty-three 15-month-old female alpacas were used to evaluate their weight gain and feed consumption. The experiment was conducted with three treatments and 21 replicates under a completely … …American Journal of Animal and Veterinary Sciences, Vol. 19, Issue 4 · 4 Mar 2025 · 5,583 accessesView PDFCite
Research ArticleOpen accessEvery word in the titlePrediction of Physicochemical Parameters in a Rainwater Harvesting and Treatment System Modeled Using the Yahtun Algorithm in Native Communities of Northern PeruEli Morales-Rojas, Edwin Adolfo Díaz Ortiz, José Emmanuel Cruz de La Cruz et al.The inhabitants of the native communities of northern Peru do not have drinking water systems, generating serious health impacts. In this sense, rainwater harvesting systems have become an alternative for these areas. Therefore, the objective of this study was to predict the physicochemical parameters in a rainwater collection and treatment system, modeled by means of a novel “Yahtun” algorithm. The … …OnLine Journal of Biological Sciences, Vol. 25, Issue 1 · 13 Feb 2025 · 5,149 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleFramework for the Adaptive Learning of Higher Education Students in Virtual Classes in Peru Using CRISP-DM and Machine LearningMaryori Bautista, Sebastian Alfaro, Lenis WongDuring the COVID-19 pandemic, virtual education played a significant role around the world. In post-pandemic Peru, higher education institutions did not entirely dismiss the online education modality. However, this virtual education system maintains a traditional teaching-learning model, where all students receive the same content material and are expected to learn in the same way; as a result, it has not … …Journal of Computer Science, Vol. 20, Issue 5 · 26 Feb 2024 · 5,885 accessesView PDFCite
Research ArticleOpen accessEvery word in the titlePrevalence and Risk Factors of Bovine Fascioliasis in Northeastern PeruClavel Diaz-Quevedo, Hugo Frias et al.Bovine fascioliasis in Peru is highly prevalent in almost all regions; however, there are few studies about its prevalence in the region of Amazonas. This research aimed to determine the prevalence and risk factors associated with fascioliasis from four livestock basins in the Amazonas region. A total of 941 bovine feces samples were analyzed and a prevalence of 52% was … …American Journal of Animal and Veterinary Sciences, Vol. 18, Issue 3 · 25 Jul 2023 · 5,685 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleThe Behavior of Valencia Orange Cultivation (Citrus x sinensis (L) Osbeck cv. Valencia) in "Type Farms" in a Province in Central Jungle of PeruWilfredo Ruiz-Camacho, Danny Villegas-Rivas, Ricardo Borjas-Ventura et al.The objective of research was to evaluate behavior of Valencia orange crops in "type farms" in the province of Chanchamayo, Junín, Peru. This research was carried out with the aim of knowing the behavior of Valencia orange crops in "type farms" in the province of Chanchamayo, Junín, Peru. The study was carried out in Chanchamayo, Junin Region, between January and … …OnLine Journal of Biological Sciences, Vol. 23, Issue 3 · 31 May 2023 · 5,896 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleTrace Elements in Fertilizers Used in PeruVíctor Gómez, Mauricio Molina-Roco, Elder Chichipe, Eli Morales RojasFertilizers provide essential nutrients for crops, however, they may also inadvertently provide trace elements that in certain concentrations represent a risk to the soil and the food chain. The objective of this research was to determine the concentrations of Cd, Pb, Cu, and Zn in the most common fertilizers used in Peruvian agriculture. Twenty-one products including inorganic, organic mineral, and … …OnLine Journal of Biological Sciences, Vol. 23, Issue 2 · 10 Apr 2023 · 6,440 accessesView PDFCite