Efeito de diferentes alturas de dobramento do milho na produção do feijão da seca.

Para verificar o efeito da pratica de diferentes alturas de dobramento de milho (Zea mays L.) sobre a producao do feijao (Phaseolus vulgaris L.) da seca, consorciado, foi conduzido na Fazenda Experimental da EPAMIG, em Patos de Minas, no ano agricola 1984/95, um experimento envolvendo duas cultivares de milho, de porte alto e baixo e uma cultivar de feijao com habito de crescimento III. O delineamento foi de blocos casualizados, em esquema de fatorial 2 x 3 x 2, com quatro repeticoes. As diferentes alturas do dobramento do milho realizado abaixo da espiga e a 50 cm do solo e, o processo de desfolha, foram efetuados apos a maturacao fisiologica, sendo logo em seguida semeado o feijao. O dobramento do milho nas diferentes alturas reduziu sua producao em 15% em relacao a planta nao dobrada. A produtividade de graos do feijoeiro foi 84,6% inferior a obtida no monocultivo, entretanto esta mesma produtividade aumentou em 16% na presenca do milho de menor porte. A ausencia de folhas na graminea proporcionou um incremento de 42,5% na producao de graos do feijoeiro, constatando ainda, efeito significativo para a interacao altura de dobramento x cultivar de milho para a producao de graos do mesmo

Octet to decuplet electromagnetic transition in a relativistic quark model

We study the octet to decuplet baryon electromagnetic transitions using the covariant spectator quark model and predict the transition magnetic dipole form factors for those involving the strange baryons. Utilizing SU(3) symmetry, the valence quark contributions are supplemented by the pion cloud dressing based on the one estimated in the γ*N→Δ reaction. Although the valence quark contributions are dominant in general, the pion cloud effects turn out to be very important to describe the experimental data. We also show that other mesons besides the pion, in particular the kaon, may be relevant for some reactions such as γ*Σ +→Σ*+, based on our analysis for the radiative decay widths of the strange decuplet baryons. © 2013 American Physical Society.G. Ramalho and K. Tsushim

Síndroma Posner-Schlossman ou crise glaucomatociclítica

Com este trabalho pretende-se rever o síndrome de Posner –Schlossman , uma patologia rara caracterizada se por episódios intermitentes de glaucoma agudo acompanhados por leves uveítes anteriores. O seu diagnóstico nem sempre é fácil mas um diagnóstico preciso é fundamental para a correcta orientação do doente a fim de evitar cirurgias ou outros tratamentos desnecessários ou equivocados

Adding Value to Tannery Fleshings Part I – Oils and Protein Hydrolysates – Production and Application

The tanning industry generates a high quantity of solid wastes. Therefore, there is a need to create valorization [added value] options for these wastes. The present work had as its main objective creating added value by production of fat and hydrolyzed protein. To this end, fleshings were treated by hydrolysis with regard to the influence of various factors. The best result was found for a temperature of 60°C, 4 hours of hydrolysis, 2% of enzyme and 100% of water, with a fat extraction yield of 93%. The fat obtained through the hydrolysis process was used to produce sulphated oils. The protein hydrolysate was concentrated to about 40% of solids content and used to prepare co-products of protein hydrolysate and glutaraldehyde. Sulphated oils were applied in leather fatliquoring and the different protein hydrolysates were tested in leather retannage. The leather samples obtained were evaluated by physical-mechanical tests and the results were compared to those obtained through a standard process. The results were very satisfactory and, in some cases better than the specified standard. The process of adding value to this waste results in a double advantage for the leather industry, reducing the environmental impact and allowing production of alternative products for leather fatliquoring and retannage.info:eu-repo/semantics/publishedVersio

A Transcriptomic Approach to Understanding the Combined Impacts of Supra-Optimal Temperatures and CO2 Revealed Different Responses in the Polyploid Coffea arabica and Its Diploid Progenitor C. canephora

Understanding the effect of extreme temperatures and elevated air (CO2) is crucial for mitigating the impacts of the coffee industry. In this work, leaf transcriptomic changes were evaluated in the diploid C. canephora and its polyploid C. arabica, grown at 25 C and at two supra-optimal temperatures (37 C, 42 C), under ambient (aCO2) or elevated air CO2 (eCO2). Both species expressed fewer genes as temperature rose, although a high number of differentially expressed genes (DEGs) were observed, especially at 42 C. An enrichment analysis revealed that the two species reacted differently to the high temperatures but with an overall up-regulation of the photosynthetic machinery until 37 C. Although eCO2 helped to release stress, 42 C had a severe impact on both species. A total of 667 photosynthetic and biochemical related-DEGs were altered with high temperatures and eCO2, which may be used as key probe genes in future studies. This was mostly felt in C. arabica, where genes related to ribulose-bisphosphate carboxylase (RuBisCO) activity, chlorophyll a-b binding, and the reaction centres of photosystems I and II were down-regulated, especially under 42 C, regardless of CO2. Transcriptomic changes showed that both species were strongly affected by the highest temperature, although they can endure higher temperatures (37 C) than previously assumed.info:eu-repo/semantics/publishedVersio