The quality of vegetable extracts is influenced by parameters such as: extraction method, extracting liquid, vegetable matter granulometry and plant:solvent ratio. The standardization of these parameters in obtaining extracts is of great importance in order to guarantee their quality. The spectrophotometric trial based on the formation of complexes with aluminum chloride was applied to evaluate...

Catalyzed Ring-Opening Polymerization (ROP) of lactones, such as c-caprolactone and ii-vnlerolactone. ha\ been investigated for preparing aliphatic polycsrer-grafted corn starch compositions. The polynieri7ntion has been carried out either i n bulk (without solvent) or in I0 wtQ grunular starch i n toluene \uspension. aftcr adequate activation of thc starch wrface arnylosc/amylopectin hydroxyl ...

Solid rocket motor flows depend strongly on alumina granulometry, which spreads up with coalescence. Solving droplet sizes in unsteady flows is a modeling and numerical challenge, specially when high loadings generate retrocoupling. As an alternative to Lagrangian approaches, the Eulerian Multi-Fluid model describes polydispersity with size-sorted droplet fluids called sections. A two size mome...

Bubble size measurement using imaging technique is commonly used when visualization is possible. However, overlapped bubble images are commonly found. The absence of internal separating line in overlapped bubble images creates difficulty in automatic algorithm development for accurate bubble size measurement. Common methodologies such as manipulation of pixel connectivity, segmentation by morph...

Limestone filler is a raw material that is already used in several applications like paints, bricks, bituminous mixtures...etc. Moreover, and particularly in Belgium, classical additions for concrete like fly ashes and granulated blast furnace slags are becoming rare; there is a need for new additions that could have a positive effect on the properties of the fresh and hardened cementitous comp...

Usually, scraps of X22CrMoV12-1 alloy are obtained through machining steam turbine blades and recycled casting. However, this process is considered too costly. The viability recycling with addition vanadium carbide (VC) powder metallurgy was analyzed in study. Scraps VC were milled a planetary ball mill during 10, 30 60 hours. granulometry the determined laser granulometry. evolution particles ...

To improve the mechanical properties of tires, silica granules can be incorporated into the elastomer as well as carbon black. Ideally, the fragmentation of the granules in the elastomer must be obtained with low mechanical stresses and lead to very small fragments distributed homogeneously in the material. On the other hand, granules must present a sufficient cohesion, in order to avoid the ge...

Grain size analysis is an essential tool for classifying sedimentary environments. The calculation of statistics for many samples can, however, be a laborious process. A computer program called GRADISTAT has been written for the rapid analysis of grain size statistics from any of the standard measuring techniques, such as sieving and laser granulometry. Mean, mode, sorting, skewness and other s...