Agronomic efficiency of granulated organomineral fertilizers based on poultry litter and phosphates.

This paper has as aim to evaluate the agronomic efficiency of granulated organomineral fertilizers produced from poultry litter and mineral sources of phosphorus

Advanced oxidation of organic matter in natural waters with TiO2 immobilized films

The purpose of this paper is to report the development of a laboratory -scale pilot based on the use of TiO2 photocatalytic thin films for degrading organic matter and pollutants from natural water. The photoreactor consists of a channel inclined with a glass plate coated by TiO2 in both faces and fixed at 1 cm from the bottom. The thin film was immobilized on the glass plates by Sputtering technique. The reactor was designed to be able of reproduce the hydraulic conditions of a water treatment plant. In experimental testing of degradation of organic matter with solar irradiation maximum efficiency of 50% was achieved. At optimal conditions it was possible to exceed the efficiencies of a full scale preozonization in a water treatment plant , thus providing a more sustainable process

Avaliação de progênies de açaizeiro promissoras para frutos em diferentes fases de desenvolvimento.

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The CD6 interactome orchestrates ligand-independent T cell inhibitory signaling

Background: T-cell membrane scaffold proteins are pivotal in T cell function, acting as versatile signaling hubs. While CD6 forms a large intracellular signalosome, it is distinguished from typical scaffolds like LAT or PAG by possessing a substantial ectodomain that binds CD166, a well-characterized ligand expressed on most antigen-presenting cells (APC), through the third domain (d3) of the extracellular region. Although the intact form of CD6 is the most abundant in T cells, an isoform lacking d3 (CD6∆d3) is transiently expressed on activated T cells. Still, the precise character of the signaling transduced by CD6, whether costimulatory or inhibitory, and the influence of its ectodomain on these activities are unclear. Methods: We expressed CD6 variants with extracellular deletions or cytosolic mutations in Jurkat cells containing eGFP reporters for NF-κB and NF-AT transcription factor activation. Cell activation was assessed by eGFP flow cytometry following Jurkat cell engagement with superantigen-presenting Raji cells. Using imaging flow cytometry, we evaluated the impact of the CD6-CD166 pair on cell adhesiveness during the antigen-dependent and -independent priming of T cells. We also examined the role of extracellular or cytosolic sequences on CD6 translocation to the immunological synapse, using immunofluorescence-based imaging. Results: Our investigation dissecting the functions of the extracellular and cytosolic regions of CD6 revealed that CD6 was trafficked to the immunological synapse and exerted tonic inhibition wholly dependent on its cytosolic tail. Surprisingly, however, translocation to the synapse occurred independently of the extracellular d3 and of engagement to CD166. On the other hand, CD6 binding to CD166 significantly increased T cell:APC adhesion. However, this activity was most evident in the absence of APC priming with superantigen, and thus, in the absence of TCR engagement. Conclusions: Our study identifies CD6 as a novel ‘on/off’ scaffold-receptor capable of modulating responsiveness in two ways. Firstly, and independently of ligand binding, it establishes signaling thresholds through tonic inhibition, functioning as a membrane-bound scaffold. Secondly, CD6 has the capacity for alternative splicing-dependent variable ligand engagement, modulating its checkpoint-like activity

Medidas morfométricas da carcaça de cordeiros de diferentes genótipos submetidos a dois sistemas de produção.

Resumo: Objetivou-se avaliar a influência do sistema de produção, bem como de diferentes grupos genéticos sobre as características morfométricas da carcaça de cordeiros. Foram observados 24 animais, machos não castrados, das raças ½Dorper x ½SPRD, ½Santa Inês x ½SPRD e ½Somalis x ½SPRD, submetidos à terminação a pasto e em confinamento. Os animais foram abatidos com peso vivo médio de 30 kg. As carcaças foram pesadas e refrigeradas a 4ºC por 24h, quando então foram mensuradas as seguintes medidas morfométricas: comprimento corporal, perímetro torácico, perímetro da perna, comprimento da perna e comprimento interno. O sistema de produção interferiu nas medidas de perímetro da perna e comprimento interno, não havendo diferença significativa (P>0,05) para as demais medidas. Os genótipos estudados não influenciaram na medida de perímetro. As medidas de comprimento da carcaça, perímetro da perna e comprimento interno não diferiram estatisticamente para os mestiços ½Dorper x ½SPRD e ½Santa Inês x ½SPRD, no entanto esses genótipos apresentaram diferença significativa para a raça ½Somalis x ½SPRD nesses parâmetros. O sistema de produção não acarretou mudanças importantes para as medidas morfométricas de comprimento de carcaça, perímetro torácico e comprimento da perna. O mestiço ½Dorper x ½SPRD apresentou as melhores médias para as medidas estudadas. [Morphometric carcass characteristics of lambs of different genotypes under two production systems]. Abstract: Objectified to evaluate the influence of production system, well as of different genetic groups on the morphometric characteristics of the carcass of lambs. 24 animals had been observed, males not castrated, of breeds ½ Dorper x ½ SPRD, ½ Santa Inês x ½ SPRD and ½ Somalis x ½ SPRD, submitted to termination grass and confinement. The animals had been abated with average alive weight 30 kg. The carcasses had been weighed and cooled 4ºC for 24h, when then following morphometric measures had been measured: corporal length, thoracic perimeter, perimeter of leg, length of leg and internal length. The production system intervened with the measures of perimeter of leg and internal length, not having significant difference (P>0.05) for excessively measures. Studied genotypes had not influenced in measure of perimeter. Measures of length of carcass, perimeter of leg and internal length hanot statistical differed for the mestizos ½ Dorper x ½ SPRD and ½ Santa Inês x ½ SPRD, however these genotypes had presented significant difference for the breed ½ Somalis x ½ SPRD in these parameters. The production system does not cause important changes for morphometric measures of carcass length, thoracic perimeter and length of the leg. The mestizo ½ Dorper x ½ SPRD presented best averages for studied measures

Enological potential of 'Pinot Noir' grape and wine from a tropical climate, in the Chapada Diamantina - BA, Brazil.

Tropical viticulture, although relatively new, has achieved significant technological developments in Brazil, making possible cultivation of vines in areas beyond standard traditional winegrowing areas worldwide. Techniques such as irrigation, the use of growth hormones in vines and production control at different times during the year, are being applied in other regions of Northeast Brazil for the production of wines. Some varieties express the best of their viticultural and enological potential in a given ecosystem, and Pinot Noir variety is very difficult to produce because presents a high susceptibility to fungal diseases (Reynier, 2007)

Enological characteristics of ?Chardonnay? grapes produced in tropical climate in the Northeastern of Brazil.

The climate has very strong influence on the vine performance, being the main factor to determine the potentiality of wine from a new region. There is also interactions among wine quality and other factors, such as soil, variety and the management adopted in the vineyard. In tropical climates, as in the São Francisco Valley (VSF), located at 350 m of elevation and 9º S of latitude, vines grown continuously, and with the use of specific technologies, it is possible to have two harvests per year in the same vineyar

Características qualitativas da carcaça de cordeiros de diferentes genótipos submetidos a dois sistemas de produção.

Resumo: No sistema de produção de carne, as características qualitativas da carcaça são de fundamental importância para complementar a avaliação do desempenho animal. Assim, objetivou-se avaliar a influência do sistema de produção, bem como diferentes genótipos sobre as características qualitativas da carcaça de cordeiros. Foram observados 24 animais, machos inteiros, das raças ½Dorper x ½SPRD, ½Santa Inês x ½SPRD e ½Somalis x ½SPRD, submetidos à terminação a pasto e em confinamento. Os animais foram abatidos com peso vivo médio de 30 kg. As carcaças foram pesadas e refrigeradas por 24h, quando foram extraídos os Longissimus dorsi e neles mensurados grau de marmoreio, distribuição e textura da gordura, além da cor e textura da carne. A distribuição da gordura na carcaça não sofreu influência de nenhum tratamento (P>0,05), enquanto que o grau de marmoreio e textura da gordura teve interferência do sistema de produção, assim como a cor da carne. Os genótipos avaliados não diferiram nos atributos de distribuição da gordura, como também na textura e cor da carne. Os cordeiros ½Santa Inês x ½SPRD apresentaram as menores médias para grau de marmoreio e textura da gordura. O mestiço ½Dorper x ½SPRD proporcionou os melhores resultados para os parâmetros qualitativos avaliados nesta pesquisa. [Qualitative characteristics the Carcass Lambs Different Submitted Genotypes Two Systems of Production]. Abstract: In system meat production, qualitative characteristics of carcass are basic importance to complement the evaluation of animal performance. Thus, objectified to evaluate the influence of production system, as well different genotypes on qualitative characteristics carcass of lambs. Twenty four animals had been observed, entire males, breeds ½ Dorper x ½ SPRD, ½ Saint Ines x ½ SPRD and ½ Somalis x ½ SPRD, submitted the termination the grass and in confinement. The animals had been abated with average alive weight of 30 kg. The carcasses had been weighed and cooled for 24h, when they had been extracted Longissimus dorsi and in them measured degree of marbling, distribution and texture of the fat and texture beyond the color and texture of the meat. Distribution of fat in carcass did not suffer influence from no treatment (P>0.05), whereas the degree of marbling and texture of fat had interference of the production system, as well the color of meat. Evaluated genotypes had not differed in distribution attributes of fat, as well as in texture and color of meat. The lambs ½ Saint Ines x ½ SPRD presented the average minors for the marbling attributes and texture of fat. The mixed race ½ Dorper x ½ SPRD provided the best ones resulted for the attributes evaluated in this research