Showing 241 - 260 results of 427 for search '"physics"', query time: 0.03s Refine Results
  1. 241

    Evaluation of a rubber nitrile stopper as container-closure system of Gavac® vaccine by Pérez-Sánchez, Amaury, Alfaro-Martínez, Arlenis, Segura-Silva, Rutdali María, Zamora-Sánchez, Jesús, Pérez-González, Eikel, Martínez-Armas, Lidiana, Salinas-Rodríguez, Diasmarys, Moreira-Rubio, Alain

    Published 2020
    “…A risk management analysis was carried out by means of a cause and effect diagram, the conformity of this cap with the quality specifications referred to in NP 1078 was determined, the physicochemical characteristics of both caps were compared according to the characteristics manufacturer's quality standard, the effect of placebo on the physical properties of the stopper was determined and the container-closure system using the nitrile rubber stopper was evaluated by means of a tightness test and a sterility test. …”
    Online
  2. 242

    as a society are we protecting children? by Rincón Balaguera, Monica Paola

    Published 2018
    “…In Colombia, the problem of the sexual abuse of minors has taken on unexpected dimensions, making it necessary to rethink the criminal policy and all those policies that are related to the prevention of abuse; most statistics indicate that this is one of the most serious ways of damaging the physical, moral and psychological integrity of the victims. …”
    Online
  3. 243

    Stress in postgraduate researchers e incorporation into the national researcher system by Salas , Marco, Reveles, Karina

    Published 2022
    “…The recurrence of stress allows the emergence of burnout; with problems of mental fatigue, physical-emotional exhaustion, anxiety, anguish, insomnia, among others, which affects the health of the researcher. …”
    Online
  4. 244

    Methodology for the design of the method of siliceous sandstones operation using special software by Lara-González, Luis Ángel, Cubides-Medina, César Augusto, Hernández-Buitrago, Edgar Rodrigo

    Published 2014
    “…The characterization of the rock mass was held from physical and mechanical tests, performed on cylindrical test tubes in order to obtain the value of the maximum strenght and elastic modulus of the rock. …”
    Online
  5. 245

    Normal Schools and teacher training from Education for children with disabilities by Farid Rahme, Mônica María

    Published 2015
    “…For this purpose, it takes data from the colonial period, from the early years of the Republic until today, when teacher training grants the challenge of specifying an education expected for everyone.To this end, the article explores, through bibliographic research, historical items related to teacher training in Brazil and its articulation with the education of students who have physical, motor, sensory, mental and/or cognitive characteristics. …”
    Online
  6. 246

    Financial evaluation of the potato production system (Solanum tuberosum L.) in Oicata, Boyaca by Avendaño-Gómez, Elmer, González-Santos, Wilson

    Published 2015
    “…Therefore all agricultural activity should use this tool to gain a greater understanding of its finantial exercise and also have an objective support to determine among other things whether to continue with the activity, diversify, combine it or lease the physical space where it is performed. The aim of this work is to conduct a financial evaluation in the production system of potato Solanum tuberosum variety Diacol capiro, in a participatory manner and with the inclusion of historical indicators, depending on time horizons and rate chance.The study population corresponded to 32 potato farmers enrolled in the company providing agricultural technical services (Epsagro) Oicata Township, Boyaca, 2014, of which 3 producers (large, medium and small) were selected for the research. …”
    Online
  7. 247

    Rational efficiency in agro-industrial process with cold chain: Thermodynamic and exergoeconomic measurement by Cely-Niño, Víctor Hugo, Cifuentes-Aya, Héctor, Torre-Marín, Gemma Cervantes

    Published 2018
    “…The cold chain is the succession of links such as pre-cooling, refrigeration, freezing, and refrigerated transport. The physical variables of the heat transfer process are temperature control, relative humidity, dew point, and cooling surface. …”
    Online
  8. 248

    Hypocenters calculation for volcanic earthquakes associated with movement of fluid in the Galeras volcano, Colombia by Torres-Corredor, Roberto Armando, Cadena-Ibarra, Oscar Ernesto

    Published 2009
    “…The investment of the extents to estimate the location of the seismic source is supported in a physical model of attenuation that describes the relation between the amplitudes and parameters of the source, taking into account the geometric amplitude, anelastic absorption, orientation of the seismometer components, effects of free surface and topography. …”
    Online
  9. 249
  10. 250

    Discretización en diferencias finitas de la ecuación de Laplace y Poisson. Aplicación a un anillo circular [dona]. (Finite Dierence Discretization of the Laplace an... by Méndez Moreno, L. M., Orozco Hernández, G., Fonseca, F.

    Published 2015
    “…AbstractAmong the more common numeric methods of solution for partial dierential equations (PDE) we have the finite dierences method and the finite elements method that approach the real solution through an effcient and accurate algorithm of convergence. Many of the physical phenomena that can be studied by means of these techniques obey their behavior to the EDP’ s of Laplace and Poisson, on whom dierent initial and/or boundary conditions can be restricted, to limit the solutions of the equation. …”
    Online
  11. 251

    Analysis of the technical efficiency of yam cultivation (Dioscorea spp.) in the Caribbean Region of Colombia by Martínez-Reina, Antonio María, Tordecilla-Zumaqué, Lilibet, Grandett-Martínez, Liliana María, Regino-Hernández, Sol Mara, Luna-Castellanos, Lily Lorena, Pérez-Cantero, Shirley Patricia

    Published 2021
    “…The data were obtained through 98 structured surveys applied to experienced farmers, which included socioeconomic information such as: age, schooling, size of the cultivated area, physical crop yields, and production destination. The sampling technique was simple and applied at random. …”
    Online
  12. 252

    Study of the Impact of Adding Dried Biosolids to Portland-Type Cement when Making Mortars by Hernandez-Garcia, Johan-Felipe, Sánchez-Perdomo, Laura-Julieth, Silva-Vega, Gabriel-Santiago

    Published 2021
    “…To carry out the experimental process, the physical properties of the materials were considered, such as their preparation and mixing, followed by the breaking test, and finally, with the collected data, the optimal percentage of biosolids for a mixture with the minimum compression strength technically required was determined. …”
    Online
  13. 253

    Spatial analysis of urban integration and dispersion on traffic flows to Villavicencio along the old road and the new road to Bogotá (Colombia) by Romero Novoa, Jorge Alessandri

    Published 2022
    “…Describing the urban morphological processes reflected in the number of roads, intersections and the built areas that conform these urban spaces and provide a kind of language that allows identifying some kind of pattern to explain, from a part of the physical elements of the city, the degree of connection or isolation between urban territories with the periphery: a socio-spatial sign.  …”
    Online
  14. 254

    Riesgo psicológico y desórdenes musculoesqueléticos relacionado con riesgo ocupacional. by Molano Gomez, Lina Maria

    Published 2024
    “…Musculoskeletal disorders (MSD) related to stress constitute one of the major health problems in the world; due to the strong impact on the physical, psychological and functional conditions of the worker the quality of life is considerably altered generating an important cost for the employer as well as for the employee. …”
    Online
  15. 255

    Construcción y control de posición de un prototipo de brazo robótico de dos grados de libertad by Zabaleta Laverde, Oscar Darío

    Published 2012
    “…Palabras claveBrazo robótico, controlador PID, lazo abierto y cerrado, actuadores y sensores. AbstractThe physical construction and electronic control of the robotic arm of two degrees of freedom has as a starting point the approach of the system to the plants dynamics of first order, where from the characterization of reaction curve or behavior of the robotic arm is possible the implementation of PID controllers with Ziegler and Nichols tuning method, that is simple and effective for the good performance of the prototype presented in this article. …”
    Online
  16. 256

    PROPIEDADES FISICOQUÍMICAS DE YOGURT TIPO ENTERO: EFECTO DE LA ADICIÓN DE GOMA XANTANA Y GOMA GUAR EN LA INCUBACIÓN by Óscar Julio Medina Vargas, Ricardo Adolfo Parra Huertas

    Published 2012
    “…The samples were evaluated every hour from the time of incubation to reach a pH of 4.6 or acidity of 0.8%, expressed as lactic acid. We made physical and chemical analysis of pH, acidity, syneresis, viscosity, water activity and density. …”
    Online
  17. 257

    Escolaridad y sedentarismo en población de 18-60 años en Tunja (Colombia) by Álvarez M., Leidy G., Díaz P., Laura J., Alfonso M., Margareth L., Sandoval C., Carolina

    Published 2014
    “…Se contó con una muestra 456 individuos los cuales cumplieron con criterios de inclusióncomo el vivir por cinco años o más en la ciudad de Tunja, así como el obtener en el diligenciamiento del Physical Activity Readiness Questionnaire (PAR-Q) un resultado negativo. …”
    Online
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  20. 260

    Effect of five substrates on growth indices of papaya (Carica papaya L.) plants under glasshouse conditions by Gil, Arlette Ivonne, Miranda, Diego

    Published 2011
    “…Peat (Klasmann®), was the most suitable substrate for both materials, because provided the best physical and chemical conditions for both growth and development. …”
    Online