Síntese de zeólitas tipo ton utilizando um sal de imidazólio como agente direcionador de estrutura

This work reports the synthesis of zeolites with different compositions (pure silica, Si/Ti and Si/Al), via hydroxide and fluoride medium using the cation 1-butyl-3- methylimidazolium as structure directing agent. Initially, the cation was synthesized in chloride form and used for the synthesis in hydroxide medium. An anion-exchange (Cl- for OH-) was required for the synthesis in fluoride medium. Different reactants were used for the formation of gels synthesis, resulting in the crystallization of MFI and TON phases, the latter predominant in many compositions. The cation and synthesized zeolites obtained were characterized by different techniques such as NMR, TG/DTG, XRD, SEM, N2 adsorption and desorption, DRS and EPMA. Besides characterizing the cation and zeolites, the mother liquor of hydroxide synthesis was characterized and it was possible to observe a modification of the cation in the synthesis conditions employed. The materials synthesized in this work can be applied in catalytic reactions and adsorption

Maternal antibody transfer to broiler progeny varies among strains and is affected by grain source and cage density

Two experiments were conducted to examine the effects of broiler breeder dietary grain source and cage density on maternal antibody (MatAb) transfer to progeny in 2 genetic strains (A and B). Broiler breeders were assigned to 16 litter floor pens and fed either corn- or wheat-based diets. Breeders were administered 4 live vaccines against Newcastle disease virus (NDV). At 23 wk of age, pullets and cocks, which reflected the full BW distribution from each treatment, were moved to a cage breeder house and placed at 1 or 2 hens/cage. Breeders were artificially inseminated at 44 wk (experiment 1) and 52 wk of age (experiment 2). Eggs were collected for 8 d, incubated, and placed in individual pedigree bags at d 19 of incubation. Blood samples from 5 chicks per treatment combination were collected at hatch in both experiments. Spleen and bursa were collected from the same chicks for histomorphometry analyses in experiment 2. In the second experiment, 12 chicks per treatment were placed in cages. Progeny were provided diets based on the same grain (corn or wheat) as their parents. Serum samples were collected at 5, 9, and 13 d of age and analyzed for anti-NDV MatAb. Data were analyzed as a 2 x 2 x 2 factorial design considering strain, dietary grain source, and cage density as main factors. Interaction effects were observed in breeders and progeny. Experiment 1 showed that strain A chicks had lower levels of MatAb when hens were housed at 2 hens/cage rather than 1 hen/cage. The MatAb levels of strain B chickens were not affected by cage density in either experiment. Experiment 2 demonstrated similar effects of cage density on MatAb levels and the area of bursa follicles for both strains. Progeny of breeders fed corn-based diets had smaller spleen white pulp only when hens were housed at 2 hens/cage compared with 1 hen/cage. The results of these experiments suggest that breeder strain and cage-density conditions affected MatAb transfer to progeny and embryo development of spleen and bursa.

Broiler breeder trace mineral nutrition and feeding practices on embryo progeny development

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Desenvolvimento e implementação de um sistema para detecção de falhas em estruturas usando microcontrolador

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Recomendação de adubação nitrogenada para o cultivar de algodoeiro FMT 701 com base na leitura de clorofila IDF

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Desenvolvimento de um sistema de SHM sem fio e com compensação automática de temperatura

Pós-graduação em Engenharia Elétrica - FEIS

Der Kampf Italiens gegen Oesterreich im Jahre 1848 : Bericht über die Operationen dieses Feldzuges

Welsch (Projektbearbeiter): Schilderung der Revolution von 1848 in der Lombardei und Venetien aus italienischer militärischer Sicht

La actividad florícola en el área Los Porteños del Partido de La Plata

Fil: Barbetti, Claudia. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.

La reserva natural Punta Lara : Área núcleo de la reserva de la biosfera Pereyra Iraola. Bases para una representación integrada en el espacio costero del Río de la Plata

Fil: Barbetti, Claudia. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.

Inserción ocupacional y prácticas laborales en microemprendimientos juveniles : Análisis de algunas experiencias promovidas por programas sociales en la Ciudad de Resistencia (Provincia de Chaco)

Los microemprendimientos productivos surgen en la última década como una opción alternativa para el tratamiento de la problemática laboral de los jóvenes en América Latina. En este trabajo realizamos una discusión sobre el alcance y las características de este tipo de intervenciones, analizando sus potencialidades y sus limitaciones en contextos con elevados índices de pobreza y mercados de trabajo deprimidos. En el texto, luego de realizar una breve revisión del estado del arte sobre el tema, presentamos los avances de un estudio en el que analizamos los primeros resultados de un programa implementado, hace algunos años, en la Ciudad de Resistencia (Provincia del Chaco) con dicho objetivo

La intervención de las empresas en los dispositivos de inclusión sociolaboral de jóvenes en la Ciudad de Resistencia

Las prácticas laborales en empresas y pasantías configuran, en las últimas décadas, una de las estrategias promovidas desde los programas sociolaborales para mejorar el acceso de los jóvenes a ocupaciones dentro del sector formal de la economía. En este trabajo realizamos una discusión sobre el alcance y las particularidades de este tipo de intervenciones, focalizando el análisis en las características que asume la participación del sector empresarial. En el texto, luego de una breve revisión del estado del arte sobre el tema, presentamos los avances de un estudio en el que analizamos los primeros resultados de un programa que actualmente se implementa en la Ciudad de Resistencia (Provincia del Chaco) e incluye este tipo de acciones. Además de identificar los ejes teóricos-conceptuales que orientan la propuesta y sus principales componentes, intentamos caracterizar el perfil de aquellas organizaciones que se sumaron a la propuesta, los motivos que orientaron esta decisión y algunas de sus prácticas, como uno de los actores centrales del programa