Produção orgânica de cenoura com compostos orgânicos elaborados por leira estática aerada.

Esse trabalho objetivou avaliar fitotecnicamente compostos orgânicos enriquecidos em N, P e k obtidos pela leira estática aerada ao longo do processo de compostagem. Foram realizadas seis amostragens, a cada quinze dias, durante a compostagem.CD-ROM. Suplemento. Trabalho apresentado no 51. Congresso Brasileiro de Olericultura, Viçosa, MG

Cultivares e adubação de pimentão para cultivo orgânico de inverno no cerrado.

Suplemento. Trabalho apresentado no Congresso Brasileiro de Olericultura, 50., 2010, Guarapari. Cinquenta anos contribuindo para a saúde da população brasileira. Trabalho A2886-T4488

Composto orgânico enriquecido em nitrogênio e fósforo.

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Efeito residual da adubação com compostos orgânicos enriquecidos em nutrientes e com diferentes graus de decomposição no cultivo da alface em sistema orgânico.

Suplemento. Trabalho apresentado no Congresso Brasileiro de Olericultura, 50., 2010, Guarapari. Cinquenta anos contribuindo para a saúde da população brasileira. Trabalho A2886-T4963

A network description of the non-Gaussian stress-optic and Raman scattering responses of elastomer networks

The ability to measure orientation in dual or multi-phase materials is of current relevance in the study conthe constitution and deformation characteristics of the separate phases in many technologically important polymeric systems. Raman spectroscopy is a very useful tool in this regard because separation of the scattered Raman intensities by phase is possible and because it can be used accurately on thick specimens. A three dimensional network model concept used previously to describe the stress and birefringence reponses of elastomers is extended to describe the components of the Raman tensor for amorphous elastomers under general finite deformations. The utility of the model is verified via its ability to predict the finite deformation responses of elastomeric networks under large shear deformations. Polydimethylsiloxane (PDMS) networks are tested to large deformations in uniaxial compression and in shear for comparison with the theory. Simultaneous displacement, load and optical retardation data are collected using apparatus specially designed to allow optical access throughout the deformation tests. The importance of properly accounting for finite rotations when relating the computational results to the experimentally measured optical data is discussed. The proposed network description of the Raman tensor is also compared to Raman intensity in the literature on polyethylene terephthalate (PET). The results indicate that the theory accurately predicts the anisotropic Raman tensor components over the full range of deformation for which data are available.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/41702/1/707_2005_Article_BF01170305.pd

Characterization of poly(norbornene) dendronized polymers prepared by ring-opening metathesis polymerization of dendron bearing monomers

The preparation and characterization of a series of first to fourth generation dendronized poly(norbornene)s are presented. The monomers were synthesized in a divergent fashion from 5-norbornene-2-methanol, utilizing the acetonide protected anhydride of 2,2-bis(methylol)propionic acid. The norbornenyl bearing dendrons were polymerized by ring-opening metathesis polymerization, and it was found that the Grubbs' first generation catalyst resulted in polymers with lower polydispersity compared to the materials obtained when employing the second generation catalyst. Two series of first to fourth generation polymers were characterized by DSC, SEC, and dynamic rheological measurements. In addition, it was found that the fourth generation material could form regular, porous membranes and birefringent fibers. The membranes were characterized with atomic force and optical microscopy. The birefringent fibers were analyzed with X-ray diffraction, polarized FTIR, and polarized optical microscopy. Copyright © 2006 American Chemical Societ