439 research outputs found
The Design of Coatings in Construction Companies
This work shows the importance of the designs of coatings of facades for businesses of construction of buildings, in particular focusing on companies in the sector of buildings devoted to the production of residential buildings, finishing medium / high in the city of Belo Horizonte, state of Minas Gerais -- Brazil. The text is divided into four main parts: context of the reality of design development; basic recommendations for the design development for the façade coatings; positive impacts of the design development for the construction and others involved, and finally, some conclusions about the theme
Conservação Pós-colheita De Frutos De Morangueiro Em Diferentes Condições De Armazenamento
Strawberry is a product appreciated by consumers due to the organoleptic characteristics. However, strawberry fruits are highly perishable after harvest, so alternative measures to prolong the shelf life of fruits are necessary. The objective of this experiment was to evaluate the fruit postharvest conservation of strawberry cultivars under different storage conditions. Strawberry fruits of eight cultivars (Festival, Campinas, Toyonoka, Dover, Oso Grande, Camarosa, Diamante and Aromas) were grown at “Mape Frutas” farm, in Datas municipality, Minas Gerais State, Brazil. Strawberry fruits were stored at cold storage (2.34±0.78°C; 89.93±4.14% RH) and environmental conditions (17.43±2.68°C; 74.11±10.44%). The experimental design was randomized blocks in a factorial arrangement with eight strawberry cultivars and five storage times, with three replications. Fruits appearance, disease incidence, total soluble solids, titratable acidity, vitamin C and firmness were evaluated every 3 days, until 12 days. At room condition, strawberry fruit could be stored for only three days. Fruits kept in cold chamber kept quality until 12 days. Cv. Festival had the best postharvest shelf life in both storage conditions and cvs. Toyonoka and Campinas showed higher incidence of diseases and less fruit firmness when compared to the other cultivars. © 2016, Sociedade de Olericultura do Brasil. All rights reserved.34340541
Characterization and basic guidelines for the quality control of chitosan for drug delivery in pharmaceutical applications
Chitosan is increasingly used as an alternative to synthetic polymers due to its water solubility, biodegradability, and biological activity. In this work, chitosan samples from three suppliers were evaluated and characterized by physicochemical methods in an attempt to analyze pharmaceutical applications. The degree of deacetylation (DD) was determined by 1H NMR, IR spectra, potentiometric titration, and UV spectrophotometry. The analysis was supplemented by the techniques of DSC, TG, loss on drying, pH of the suspension, heavy metals, sulphated ash, and triple detector size exclusion chromatography (TriSEC). The use of UV, IR, and 1H NMR techniques to determine the degree of deacetylation, limit testing for heavy metals and sulphated ash to analyze inorganic waste, and TriSEC to analyze molecular weights and molecular distribution are recommended as basic requirements for pharmaceutical applications.Colegio de Farmacéuticos de la Provincia de Buenos Aire
Optimization of germination and initial quality of seedlings of Prunus persica tree rootstocks
Evaluation of biodegradable implants based on polymer blends: development, characterization and in vitro release studies
Implants prepared with polymer blends [poly (e-caprolactone)-poly(lactide), PCL-PLA] at
different rates were developed from microspheres. Approximately 19% of dexamethasone acetate was encapsulated
into the microspheres, and it was not dependent on polymer characteristics. DSC studies suggested
that there is not any signal of interaction between the polymers and the drug and also no influence
of any residual solvent in the microspheres. Infrared analysis indicated the chemical stability of the drug
even in the blend matrix. The developed devices present low degradation rate. 34% and 21% of dexamethasone
acetate was released from PLA and PCL alone implants at 10 weeks, respectively. Intermediate
amounts were released from the devices prepared at different PLA-PCL ratios in such a way that the
higher the amount of PCL, the slower was the drug release. This study demonstrates that polymeric drug
delivery systems allowed to a prolonged release of dexamethasone acetate in vitro.Colegio de Farmacéuticos de la Provincia de Buenos Aire
Produção e qualidade de frutos de tomateiros portadores de alelos mutantes de amadurecimento e coloração
Potencial alelopático de extratos aquosos de Melissa officinalis L. e Mentha x villosa L. na germinação e vigor de sementes de Plantago major L.
Energetic and nutrient metabolizability values of corn obtained with nutritional corrections for broilers
In vitro behaviour of Aspasia variegata, an epiphytic orchid from the Brazilian Cerrado
Ação de potenciais hidrogeniônicos no crescimento e produtividade de sálvia (Salvia officinalis L.)
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