8 articles for “M. M. Perez-Fra”

Also matching:2 authors

Review ArticleOpen accessIn the author namesBotanic Products as a Sustainable Alternative in the Control of Rice and Grape Pests in South AmericaRicardo Diego Duarte Galhardo de Albuquerque, Frank Romel Leon-Vargas, Carmen Cerdeña del Aguila et al.Pests present a major threat to agricultural crops, leading to diminished yields, economic losses, and potential food insecurity. In South America, rice and grape cultivation have become increasingly significant due to their economic value, contribution to food security, and role in exports. However, these crops are vulnerable to pests such as Oebalus poecilus, Hydrellia wirthi, and Pseudococcus viburni. The reliance … …OnLine Journal of Biological Sciences, Vol. 25, Issue 2 · 19 Feb 2025 · 5,315 accessesView PDF Cite

Research ArticleOpen accessIn the author namesThe 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 · 5,901 accessesView PDF Cite

Research ArticleOpen accessIn the author namesIs the LEADER Initiative a Real Contribution to Rural Development in Underdevelopment Areas in Europe?M. M. Perez-Fra, Rosa Verdugo-Mateshe LEADER Community Initiative is a public programme that adopt on a local initiative approach, targeting rural areas as their field of intervention. The aim of this study is to provide elements for discussion regarding the applicability of such strategies for rural areas, which lag far behind European levels and to gauge the true bearing they have on the diversification … …Journal of Social Sciences, Vol. 1, Issue 1 · 31 Mar 2005 · 7,432 accessesView PDF Cite

Research ArticleOpen accessIn the author namesInvestigation 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 · 7,406 accessesView PDF Cite

Research ArticleOpen accessAll words, across the recordAugmented Reality Application for Teaching Basic Operations with Fractions of the Same DenominatorHernández Pérez Andrea Ivonne, Mendoza Pérez Marco Alberto, Cruz Flores René GuadalupeIn this study, an Augmented Reality (AR) application for the teaching of basic operations with fractions of the same denominator was made. Prototype Methodology was used for its develop. In the application striking figures designs are visualized in three-Dimensional (3D), to the students’ perspective, those help to represent the explanation in the best way with the process of the basic … …Journal of Computer Science, Vol. 16, Issue 7 · 13 Jan 2021 · 7,448 accessesView PDF Cite

Research ArticleOpen accessAll words, across the recordGas Atomization of Molten Metal: Part II. ApplicationsTaher M. Abu-Lebdeh, Genaro Pérez-de León, Sameer A. Hamoush et al.A numerical model was derived to obtain results for two alloys during the Gas Atomization (GA) method. The model equations and governing equations were implemented through the application of part I data. Aspects such as heat transfer, fluid mechanics, thermodynamics and law of motions were taken into account for the formulation of equations that take gas dynamics, droplet dynamics and … …American Journal of Engineering and Applied Sciences, Vol. 9, Issue 2 · 19 Apr 2016 · 8,365 accessesView PDF Cite

Research ArticleOpen accessAll words, across the recordHeavy Metal Contamination of Soils and Water Resources Kettara Abandoned MineManuel Valiente, Gustavo Perez, Marta Avila et al.Problem statement: Metal mining; together with mineral smelting and processing, have contaminated the environment surrounding mine areas throughout the world exceeding natural background concentration. Approach: These processes introduce metal contaminants into the environment through gaseous and particulate emissions, waste liquids and solid wastes. The principal objective of this study was to investigate soil and water contamination in the vicinity of … …American Journal of Environmental Sciences, Vol. 8, Issue 3 · 8 May 2012 · 8,835 accessesView PDF Cite

Research ArticleOpen accessAll words, across the recordDetection of Phytoplasma on Indian Fig (Opuntia ficus-indica Mill) in Mexico Central RegionRicardo Hernández-Pérez, Juan Carlos Noa-Carrazana, Ricardo Gaspar et al.Problem statement: The Indian fig (a species of prickly pear cactus), has been known as Nopal, comprises an approximate area of 100,000 ha, in plantations used for human consumption. "Pyramids" Indian fig area located in the northeastern State of Mexico has been an important Indianfig area in the country, with 15810 ha, where a phytoplasma has been consistently present in … …OnLine Journal of Biological Sciences, Vol. 9, Issue 3 · 30 Sep 2009 · 7,733 accessesView PDF Cite