Resultados de búsqueda - (("levey" OR "level") OR ("leves" OR "levels"))*

  1. 141
  2. 142

    New Technologies in Extrusion Process for Shrimp Feed por Muñoz, Osvaldo

    Publicado 2011
    “…In addition a limited availability of water for the sustainable farming of shrimp, has routed this business to intensive raise where the levels of pollution play a very important role. This is why the feed must also generate lower levels of waste.It is well known that the extrusion process compared with the pelleting process, produce better nutritional quality feed, but in the particular case of shrimp, where a feed of high density and stable in the water is required, the extrusion by itself is not able to achieve these levels of desired density.The main characteristics of the shrimp feed are:- Water Stability, Digestibility, Quick sinking, Smaller size of the pellet, Reduces pollution in the water, - Lowering costs in the feed and OtherAlthough the extrusion process requires a highest investment and also the operational costs are higher than the pelleting process, if the extrusion process has the appropriate technology for densification, it would be much cheaper with a much greater profit than the pelleting process and most importantly, with a better quality feed as a result.In this work we show the latest technological advances in this direction to achieve a feed for shrimp in high quality and low cost through the extrusion process.…”
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  3. 143

    Adopción de Internet en México: Propuesta de un Índice de Telecomunicaciones por Rodríguez Ruiz, Javier Gonzalo

    Publicado 2019
    “…In additionto the educational level, age group, household size,personal or aggregated income and urbanization, resultsindicate that the provision of telecommunications capitalis crucial. …”
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  4. 144
  5. 145
  6. 146

    Lipid Nutrition Research for the Development of Practical Commercial Diets for Corvina and Alternative Ingredients for Aquafeeds por González-Félix, Mayra L., Perez-Velázquez, Martin, Bringas-Alvarado, Lorena, Navarro-García, Gerardo

    Publicado 2015
    “…Aquafeeds for carnivorous fish, like sciaenids, typically contain high levels of fish meal and fish oil, but the high prices of these dietary ingredients, well above $2000.00 US dollars per ton (aqua grades) in January of 2015, makes the use of high inclusion levels unprofitable and unacceptable. …”
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  7. 147
  8. 148
  9. 149

    Nutritional role of the natural productivity and formulated feed in semi-intensive shrimp farming as indicated by natural stable isotopes por Gamboa Delgado, Julián

    Publicado 2014
    “…As in the natural ecosystems, these dietary components exhibit differing isotopic signatures at natural abundance levels and since these natural communities belong to different trophic positions and isotopic values of organisms tend to increase with trophic level, the isotopic differences can be measured and used to infer on the transfer of nutrients, hence allowing establishing relationships between consuming organisms and their diets. …”
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  10. 150
  11. 151

    Vitamin Requirements of Tilapia – A Review por Shiau, Shi-Yen, Lin, Yu-Hung

    Publicado 2019
    “…Niacin requirements in tilapia varies with the carbohydratesource in diet. Optimum dietary levels of niacin for maximum growth have been reported to be 26 mg/kg diet fortilapia fed a glucose diet, whereas 121 mg/kg diet is needed for fish fed a dextrin diet. …”
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  12. 152

    Risk factors and the relation of lactic acid to neonatal mortality in the first week of life por Rodríguez Balderrama, Isaías, Ostia Garza, Patricia Johane, Villarreal Parra, Rosa Delia, Tijerina Guajardo, Mercedes

    Publicado 2016
    “…To determine the relationship between lactic acid levels and neonatal mortality in the first week of life, in patients admitted to the Neonatal Intensive Care Unit (NICU) of the ‘‘Dr. …”
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  13. 153
  14. 154

    Acute phase markers in obese children and adolescents with metabolic disorders por Cura Esquivel, Idalia Aracely, Cordero Pérez, Paula, Torres González, Liliana, Muñoz Espinosa, Linda Elsa

    Publicado 2018
    “…Results. C-reactive protein levels increased in all patients. Patients with metabolic syndrome also had high levels of apolipoprotein A-1 and haptoglobin. …”
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  15. 155

    La preparación académica profesional como mecanismo de eficiencia y eficacia en el desempeño laboral por Torres González, Ilsa Elia

    Publicado 2014
    “…The statement above is applicable in varying degrees at any level of government and interchangeably in institutions whose orientation is governance. …”
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  16. 156
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  19. 159

    Review: Use of Animal Fats in Aquaculture Feeds por P. Bureau, Dominique, Gibson, Jennifer, El-Mowafi, Adel

    Publicado 2019
    “…However, the diet must containsufficient levels of unsaturated fatty acids (mono and polyunsaturated) to allow for properdigestibility of saturated fatty acids, and, obviously, meet essential fatty acid requirementsof the fish. …”
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  20. 160

    READING AND WRITING IN THE ESL/EFL CLASSROOM INTRODUCTION por Arechiga, Sara A.

    Publicado 2022
    “…A brief description of the general features of the syllabus of the English course at the high school level of the Universidad Autónoma de Nuevo León is introduced. …”
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