Quantitative descriptors and their direct and indirect effects on corn yield

The objective of this study was to evaluate the direct and indirect effects of ten quantitative descriptors of agronomic importance in productivity of 25 maize hybrids and their respective influences of heritability. The experiment in randomized blocks with four replications, was conducted in 2010/2011 crop in a soil under humid subtropical climate. The quantitative descriptors were: ear length, ear diameter, cob diameter, number of rows of grains, stem diameter, plant height, ear height, weight of 100 grains, grain weight per ear and number of grains per ear. The grain weight per ear and ear length showed high correlation with grain yield, and the descriptors with the highest potential for selecting superior genotypes and showing high heritability.

The influence of bone quality on the biomechanical behavior of full-arch implant-supported fixed prostheses

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Frugivory and seed dispersal by tapirs: an insight on their ecological role

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

A family of dissipative two-dimensional mappings: Chaotic, regular and steady state dynamics investigation

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Hydrogen sulphide removal from air by biotrickling filter using open-pore polyurethane foam as a carrier

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

In vitro conservation of Dendrobium germplasm

Dendrobium is a large genus in the family Orchidaceae that exhibits vast diversity in floral characteristics, which is of considerable importance to orchid breeders, biotechnologists and collectors. Native species have high value as a result of their medicinal properties, while their hybrids are important as ornamental commodities, either as cut flowers or potted plants and are thus veritable industrial crops. Thus, preservation of Dendrobium germplasm is valuable for species conservation, breeding programs and the floriculture industry. Cryopreservation represents the only safe, efficient and cost-effective long-term storage option to facilitate the conservation of genetic resources of plant species. This review highlights 16 years of literature related to the preservation of Dendrobium germplasm and comprises the most comprehensive assessment of thorough studies performed to date, which shows reliable and reproducible results. Air-drying, encapsulation-dehydration, encapsulation-vitrification, vitrification and droplet-vitrification are the current cryopreservation methodologies that have been used to cryopreserve Dendrobium germplasm. Mature seeds, pollen, protoplasts, shoot primordia, protocorms and somatic embryos or protocorm-like bodies (PLBs) have been cryopreserved with different levels of success. Encapsulation-vitrification and encapsulation-dehydration are the most used protocol, while PLBs represent the main explant explored.

Estudo da secagem natural e forçada das folhas de Corymbia Citriodora a partir da extração de óleos essenciais

Essential oils are products from plants and can be located in parts or in its entirety. There are several methods for its extraction, where the most suitable depends on the plant or the use of the essence. The main species cultivated in Brazil are the Corymbia citriodora, Eucalyptus globulus and Eucalyptus staigeriana. The Corymbia citriodora is a species that was introduced in Brazil along with other species, with the initial objective of timber production. The yield of oil can range from 0.5 % to 3.0% according to the literature and this can be optimized by reducing the moisture content of the leaves. Studies show that the lower water content in the leaves allows the vapor stream generated in the extractor can drag, more efficiently, the volatiles stored in the cells as compared with the green material. The drying of the sheets is important for companies, so that there is transport of water, increasing the volume of the sheets to distillation and hence a greater volume of oil. The objective of this study was to compare the drying methods, analyzing the income of the essence and determine the best method to optimize the yield of essential oil. Experimental tests were performed natural drying 10, 15 and 20 days and fluidized with times of 60, 90 and 120 minutes and after drying were extractions of the oil. The results obtained for fresh leave yield was 1.20 % and the drying time which showed the highest yield was 15 and 20 days with 2.90 % and 2.70 % yield, respectively, with the lowest level humidity of 16%. The yields obtained in fluidized bed drying did not change as the natural drying to between 1.64% and 1.7%. It is concluded that the decreased level of the sheets increases the yield of oil and the temperature in the fluidized bed is essential for the removal of water from the leaves necessary to increase the yield

Avaliação da influência da agitação no tratamento anaeróbio por leito fixo de manipueira

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Tratamento da manipueira em sistema anaeróbio de leito fixo

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Estudo sobre desruptores endócrinos em sistemas aquáticos: detecção e perspectivas de tratamento das águas do Rio Aporé-MS/GO, utilizando-se adsorventes sólidos

Pós-graduação em Ciência dos Materiais - FEIS

TiO2/CuO films obtained by citrate precursor method for photocatalytic application

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Multicollinearity and financial constraint in investment decisions: a bayesian generalized ridge regression

This paper addresses the investment decisions considering the presence of financial constraints of 373 large Brazilian firms from 1997 to 2004, using panel data. A Bayesian econometric model was used considering ridge regression for multicollinearity problems among the variables in the model. Prior distributions are assumed for the parameters, classifying the model into random or fixed effects. We used a Bayesian approach to estimate the parameters, considering normal and Student t distributions for the error and assumed that the initial values for the lagged dependent variable are not fixed, but generated by a random process. The recursive predictive density criterion was used for model comparisons. Twenty models were tested and the results indicated that multicollinearity does influence the value of the estimated parameters. Controlling for capital intensity, financial constraints are found to be more important for capital-intensive firms, probably due to their lower profitability indexes, higher fixed costs and higher degree of property diversification.

Atributos produtivos e qualitativos de grãos e fisiológicos e sanitários das sementes de cultivares de feijão

Pós-graduação em Agronomia (Produção Vegetal) - FCAV

Mutagenic potential of lettuce grown from irradiated seeds

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Co-digestão anaeróbia de resíduos vegetais e águas residuárias de suinocultura em reatores horizontais de leito fixo e alta taxa

Pós-graduação em Microbiologia Agropecuária - FCAV