Search Results - "Hugo Velasco"

Speed Regulation of a Permanent Magnet DC Motor with Sliding Mode Control Based on Washout Filter by Velasco-Muñoz, Hugo, Candelo-Becerra, John E., Hoyos, Fredy E., Rincón, Alejandro

“…The accuracy of control systems applied to motors is influenced by uncertainties and abrupt variations of the load and system parameters. Some robust control…”
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Using Geochemical Fingerprints for Assessing Sediment Source Apportionment in an Agricultural Catchment in Central Argentina by Garcias, Yanina, Torres Astorga, Romina, Ojeda, Guillermo, de los Santos Villalobos, Sergio, Tejeda, Samuel, Velasco, Hugo

“…In the hilly semi-arid region of central Argentina, where the agricultural frontier expands at the expense of natural ecosystems, soil erosion is one of the…”
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Preparation and Evaluation of Thermal Properties of Composites Based on Polypropylene Reinforced with Garlic Husk Particles (GHP) by Villalobos-Neri, Elda Elizabeth, Macchlesh Del Pino-Pérez, Luis Alejandro, Velasco-Ocejo, Hugo Alberto, Rivera-Armenta, José Luis, Espindola-Flores, Ana Cecilia

“…The use of biowaste materials as additives in polymeric matrices has generated interest. Garlic is a seed that has wide application areas, not only in the food…”
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Use of geochemical fingerprints to trace sediment sources in an agricultural catchment of Argentina by Romina Torres Astorga, Yanina Garcias, Gisela Borgatello, Hugo Velasco, Román Padilla, Gerd Dercon, Lionel Mabit

“…Soil erosion and associated sediment redistribution are key environmental problems in Central Argentina. Specific land uses and management practices, such as…”
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Representations of a mathematical model as a means of analysing growth phenomena by Guerrero-Ortiz, Carolina, Mejía-Velasco, Hugo R., Camacho-Machín, Matías

“…•Establishing relations between a phenomena and an associated mathematical model.•Mobilizing several representation registers to give meaning to ordinary…”
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Temporal Attenuation of Gamma Dose Rate in Air Due to Radiocesium Downward Mobility in Soil by Velasco, Hugo

“…ABSTRACTThe Chernobyl and Fukushima Dai-ichi Nuclear Power Plant accidents have demonstrated that radiocesium deposited on the ground was one of most important…”
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Acetylsalicylic Acid (ASA) on Hydroxyethylcellulose/Polyacrylamide Gel (HEC/PAAm) as a Proposal for a Dermatological Compress: Mathematical Modeling of ASA Release Kinetics by Morales-Cepeda, A. B., Ramos-Galvan, Claudia Esmeralda, Flores-Cerda, Gabriel Osmar, González-Sánchez, Jorge Alberto, Velasco-Ocejo, Hugo Alberto, Castro-Guerrero, Carlos Fernando, Castillo-Miranda, Claudia Alicia, Rivera-Armenta, José L.

“…Currently, acne in adolescents and adults is caused by an infection in follicles caused by hormonal changes, stress, water pollution, air, and earth; the last…”
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Deposition of Ibuprofen Crystals on Hydroxypropyl Cellulose/Polyacrylamide Gel: Experimental and Mathematic Modeling Releasing by De Alva-Salazar, Hugo, González-Sánchez, Jorge Alberto, Velasco-Ocejo, Hugo Alberto, Salas-Papayanopolos, Homero, Castro-Guerrero, Carlos Fernando, Morales-Cepeda, A. B., Castillo-Miranda, Claudia Alicia, Paramo-Garcia, Ulises

“…The crystallization of nonsteroidal anti-inflammatory drug [2-(4-isobutyl-phenyl) propionic acid] ibuprofen (IBP) on a hydroxypropyl cellulose (HPC) and…”
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Difficulties experienced by students in the interpretation of the solutions of ordinary differential equations that models a problem by Carolina Guerrero Ortiz, Matías Camacho Machín, Hugo Rogelio Mejía Velasco

“…In this work we analyzed some of the difficulties that arise when the student interpret the solutions of Ordinary Differential Equation (ODE) when they are…”
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Three-Phase Flow Tomography System in Upward-Vertical High-Viscous-Oil/Water/Gas Flow by Velasco-Pena, Hugo Fernando, Bonilla-Riano, Adriana, Santos, Carlos Marlon, Rodriguez, Oscar M. H.

“…A new three-phase flow tomography system is presented in this work. The system was developed to be applied in high-viscous-oil/water/gas flow arranged in…”
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The unified metabolism of Gluconacetobacter entanii in continuous and batch processes by Velasco-Bedrán, Hugo, López-Isunza, Felipe

“…The capabilities of Gluconacetobacter spp. to grow on polyol carbon sources through partial oxidation and to synthesize carbohydrate polymers have been noted…”
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Complicaciones quirúrgicas del abordaje endoscópico endonasal transesfenoidal en macroadenomas hipofisarios no funcionantes: estudio de centro único by Almendárez-Sánchez, César A., García-Velasco, Hugo, Ramírez-Sosa, Miguel A., Tevera-Ovando, Carlos A., López-Zapata, Javier, Ruiz-Flores, Milton, Huato-Reyes, Raúl

“…Antecedentes: Los abordajes quirúrgicos de la región selar han sido un reto para los neurocirujanos. Con la introducción de la técnica endoscópica se ha…”
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High spatial and temporal resolution film thickness planar sensor: comparison of geometries by Bonilla Riaño, Adriana, Velasco Peña, Hugo Fernando, Hernandez Rodriguez, Oscar Mauricio, Bannwart, Antonio Carlos

“…Purpose The purpose of this paper is to study planar sensor geometries for the measurement of film thickness in a viscous oil–water flow. The study is relevant…”
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Structural and Physicochemical Characterization of Spirulina (Arthrospira maxima) Nanoparticles by High-Resolution Electron Microscopic Techniques by Neri-Torres, Elier Ekberg, Chanona-Pérez, Jorge J, Calderón, Hector A, Torres-Figueredo, Neil, Chamorro-Cevallos, German, Calderón-Domínguez, Georgina, Velasco-Bedrán, Hugo

“…The objective of this work was to obtain Spirulina (Arthrospira maxima) nanoparticles (SNPs) by using high-impact mechanical milling and to characterize them…”
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Serie de casos: Tumores del Golfo de la yugular by Hugo Velasco Altamirano, Diego Vivar Bimos, Felipe Rosales

“…Introducción: Los tumores del foramen yugular son lesiones de la base del cráneo poco frecuentes, que presentan dificultades tanto para el diagnóstico como…”
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137Cs Soil-to-plant Transfer for Individual Species in a Semi-natural Grassland. Influence of Potassium Soil Content by Ciuffo, Liliana, Velasco, Hugo, Belli, Mar, Sansone, Umberto

“…In the present study we assessed the radiocaesium uptake by plants in order to piece together information on factors affecting the uptake processes,…”
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Assessing soil erosion in a semiarid ecosystem in Central Argentina using 137 Cs and 7 Be measurements by Lohaiza, Flavia, Juri Ayub, Jimena, Valladares, Diego L, Velasco, Hugo, Rizzotto, Marcos, de Rosas, Juan Pablo, Paez, Ricardo

“…Argentina is a Latin American country which encounters soil degradation problems. The most productive regions have implemented conservative land practices…”
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Assessing soil erosion in a semiarid ecosystem in Central Argentina using 137Cs and 7Be measurements by Lohaiza, Flavia, Juri Ayub, Jimena, Valladares, Diego L., Velasco, Hugo, Rizzotto, Marcos, de Rosas, Juan Pablo, Paez, Ricardo

“…Argentina is a Latin American country which encounters soil degradation problems. The most productive regions have implemented conservative land practices…”
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Exploring innovative techniques for identifying geochemical elements as fingerprints of sediment sources in an agricultural catchment of Argentina affected by soil erosion by Torres Astorga, Romina, de los Santos Villalobos, Sergio, Velasco, Hugo, Domínguez-Quintero, Olgioly, Pereira Cardoso, Renan, Meigikos dos Anjos, Roberto, Diawara, Yacouba, Dercon, Gerd, Mabit, Lionel

“…Identification of hot spots of land degradation is strongly related with the selection of soil tracers for sediment pathways. This research proposes the…”
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Erro na Vida? Da Admissibilidade das Ações de Wrongful Life e Wrongful Birth by Velasco, Hugo Daniel Leite

“…O trabalho em apreço tem como tema principal a discussão das wrongful actionsno ordenamento jurídico português, mais concretamente das ações de wrongful birthe…”
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