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Publicatii proprii
Temperature responsive gels based on Pluronic F127 and poly(vinyl alcohol)
Aqueous mixtures of Pluronic F127 and poly(vinyl alcohol) (20% polymer concentration in the system) were prepared and investigated by rheology and laser particle size distribution, in order to obtain temperature responsive gels for biomedical applications. The influence of the gelation conditions and system composition on the viscoelastic parameters and particle size distribution (which are very sensitive to the sol−gel transition process) was
Read moreInfluence of temperature on the rheological behavior of polymer mixtures in solution
This article investigates the viscoelastic behavior of poly(acrylonitrile) (PAN) and poly[N-(4-carboxyphenyl)maleimide] (PMI) solutions in dimethylformamide (DMF) in comparison with PMI/PAN/DMF ternary mixtures. Some rheological characteristics, such as viscosity and relaxation time, were investigated as functions of the polymer mixture composition at different temperatures in the range of 0-60 °C. The solutions of each polymer and their mixtures
Read moreThe effect of grazing management and camelina seed supplementation in the diet on milk performance and milk fatty acid composition of dairy ewes
The objective of this study was to investigate the effects of ewes' feeding system (grazing vs. part-time grazing) in combination or not with camelina seed (Camelina sativa L.) as dietary supplement on milk yield parameters, and especially on the fatty acid (FA) profile of milk fat. Experimental diets were constituted by a 2 x 2 factorial arrangement of grazing time (grazing 12 h/d = G vs. grazing 6 h/d and diet supplementation with grass hay ad
Read moreEffects of breed on milk fatty acid profile in dairy ewes, with particular reference to cis-9, trans-11 conjugated linoleic acid
The objective of this study was to determine and compare the fatty acid profile of milk fat, with particular reference to cis-9, trans-11 conjugated linoleic acid (CLA), in two indigenous Romanian sheep breeds (Spanca and Turcana), irrespective of the effects of diet and season. The ewes (n = 25 for each breed) received the same feed (total mixed rations) and were maintained under identical conditions. Four samples were collected from each individual
Read moreThe Influence of Forage/Concentrate Ratio and Full Fat Soya By-Pass Supplementation on the Fatty Acids Profile from the Carcase of Fatting Lambs
There was organized a 2x2 factorial type experience in which it has been aimed the influence of forage/concentrates ratio and the effect of supplementing the ratio with full fat soya by-pass (FFS) on the production performance and carcass fatty acid profile of fattening lambs. 32 Tsigai lambs were divided into 4 groups and were fed with 2 different diets regarding the forage/concentrates ratio (35/65 and 65/35, on a DM basis), containing or not 5%
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