Listar Theses & Dissertations por título
Mostrando ítems 421-440 de 4082
-
Caracterización de cerdos híbridos de cuatro razas (Landrace, Yorkshire Duroc y Pietrain) para desempeño productivo, calidad de canal y calidad de carne bajo condiciones de clima tropical
(2008)Ciento dieciséis cerdos híbridos (machos Pietrain x Duroc cruzados con hembras Landrace x Yorkshire o Yorkshire x Landrace), de catorce lechigadas, fueron evaluados para desempeño en crecimiento, calidad de canal y de carne ... -
Caracterización de compuestos bioactivos en hojas de guayaba (Psidium guajava) como un potencial de valor agregado en botánicos tropicales
(2011)Guava (Psidium guajava) is a botanical plant that has been used for a long time as a ceremonial and / or medicinal plant. However, chemical and biological activity of this plant is hidden and very few reported studies used ... -
Caracterización de compuestos volátiles responsables del aroma dos variedades de cafés arábicas de Puerto Rico
(2016)The attributes of greater quality and importance of coffee drinks are the aroma, flavor, color and body. To obtain a high performance coffee we must ensure their quality. This requires analysis of coffee characteristics ... -
Caracterización de Cs2CoBr4 y su posible utilización en uniones termoeléctricas
(2013)Cs2CoBr4 crystals were grown by the method of fast evaporation. The capacitance of crystals were determined using the LCZ method in the temperature range of 273 K to 310 K and frequency range of 10 KHz to 1 MHz. Graphs of ... -
Caracterización de hongos y bacterias coliformes presentes en el biosólido municipal compostado
(2012)Municipal Sewage Sludge Compost (MSSC) is used as an alternate growing media for peat. Howeve;rthe use of MSCC can be affected by the pre sense of pathogenic microorganisms. Concerns about the effects of pathogens motivates ... -
Caracterización de las poblaciones de colémbolos asociados a la hojarasca de un bosque secundario en Mayagüez, Puerto Rico
(2010)Collembolans are small arthropods, abundant in litter and, often regarded as good indicators of soil health. Diversity and abundance of litter springtails was analyzed in a Mayaguez secondary forest in leaf litter of ... -
Caracterización de los nutrientes y sedimentos en la escorrentía de suelos enmendados con residuos orgánicos de vaquería
(2009)Runoff with elevated phosphorus (P) and nitrogen (N) concentrations from agricultural soils contributes to surface water quality reduction. The effects of soil test P, dairy manure sludge application levels, and time after ... -
Caracterización de vinos de piña (variedad española roja) pasteurizados y sin pasteurizar elaborados con diferentes cepas de Saccharomyces cerevisiae.
(2006)An important characteristic of wines is their acidity, as it could influence the final properties of the product. Some of these characteristics are: conservation, stability, influence on organoleptic properties and foam ... -
Caracterización del aroma del café molido de Puerto Rico mediante la técnica de microextracción en fase sólida (spme) y cromatografía de gas acoplada a espectrometría de masas (gc/ms)
(2005)The main objective of this research was the identification and semiquantitative determination of the volatile compounds responsible for the aroma of the two principal coffee species and their respective varities grown at ... -
Caracterización del proceso fermentativo de ensilajes de residuos orgánicos de plantas procesadoras de piña (Ananas comosus) y china (Citrus sinensis) y su evaluación en dietas para ovinos
(2006)Three experiments were conducted to evaluate the fermentative characteristics, nutritional value, and aerobic stability of organic residues from fruit processing plants. Pineapple (Ananas comosus) and orange (Citrus sinensis) ... -
Caracterización del subproducto del proceso de elaboración de los granos de kéfir utilizando suero ácido
(2020-12-01)The purpose of the investigation is to determine whey kefir characterization by conducting the fermentation using column bioreactors. The three bioreactors were studied for a period of 10 fermenting days. Samples obtained ... -
Caracterización fenotipica de una colección de germoplasma de mamey sapote (Portería Sapota, [JACQ.] H.E. Moore & Stearn.) del USDA-ARS TARS
(2009)Twenty-six accessions of mamey sapote (Pouteria sapota [Jacq.] H.E. Moore & Stearn) from the USDA-ARS TARS (Tropical Agricultural Research Station) collection growing at Isabela, Puerto Rico were evaluated for both ... -
Caracterización fisicoquímica y mecánica de Musa paradisiaca L. cultivares Maiden y Maricongo
(2021-05-13)The Plantain are in third place, in terms of importance, of the agricultural gross income of Puerto Rico; and the Maricongo variety is one of the most produced commercially. Recently, introducing the Maiden hybrid, which ... -
Caracterización físico-química de enmiendas a base de lignina y efectos de su uso en los microorganismos del suelo
(2021-05-12)The objective of this research was the physical and chemical characterization of lignin based amendments and the determination of the effects of its use on soil microorganisms. Results show that calcium lignosulfonate ... -
Caracterización físico-química y microbiológica de un yogurt elaborado a base de suero lácteo ácido
(2017)Evaluation of physicochemical properties of a whey-based yogurt, were conducted. Three formulations were elaborated, one with milk (control) and two with neutralized whey, with variation in the source of the added solids: ... -
Caracterización morfológica del género Auricularia en zonas boscosas del área oeste de Puerto Rico
(2018-12-05)Auricularia is a taxonomically complex genus, which requires the use of traditional techniques such as tissue evaluation and staining for its characterization. These traditional techniques have not been re-evaluated in ... -
Caracterización morfológica y molecular de hongos fitopatógenos de suelo e identificación de bacterias follares en el cultivo de cebolla
(2005)The objectives of the present investigation were to characterize morphological and molecularly some soilborne phytopathogenic fungi and identify bacteria associated to onion foliage in southern Puerto Rico. Thirteen ... -
Caracterización morfológica, patogénica y molecular de especies de colletrotrichum asociados al follaje del cultivo de ñame (Dioscorea SPP.)
(2015)Anthracnose disease caused by Colletotrichum gloeosporioides, is the most destructive disease in yam (Dioscorea alata) cultivation worldwide. The objective of this research is to identify morphologic, pathogenic and ... -
Caracterización morfológica, patogénica y molecular de hongos asociados a frutales exóticos tropicales, rambutan (Nephelium lappaceum L.) y longán (Dimocarpus longan L.) en Puerto Rico
(2010)El rambután, Nephelium lappaceum L., y el longán, Dimocarpus longan L., son frutales exóticos tropicales que han ganado auge en el mercado internacional despertando interés en los agricultores de Puerto Rico. Sin embargo, ... -
Caracterización nutricional y perfil de ácidos grasos de la semilla de soya [Glycine max (L.) Merr.] a diferentes niveles termicos
(2018-05)Soybean seeds [Glycine max (L.) Merr.] of varieties (V) PR 1-1, PR 16-2, PR 22-3 and Hinson Long Juvenile (HLJ) from two plantings (March 2016 and July 2016) were used in two studies. The objectives of the first study were ...