Buscar recursos académicos

We study the capacitated m-ring-star problem (CmRSP) that faces the design of minimum cost network structure that connects customers with m rings using a set of ring connections that share a distinguished node (depot), a...

Damage detection through changes in the dynamic properties has received considerable attention in recent years. However, approaches in structures supporting tanks partially filled with liquid are scarce in the technical ...

Fluid dynamic gauging (FDG) is an experimental technique that exploits the behaviour of a suction flow through a nozzle located near a fouling deposit to determine the thickness of the layer. The nozzle does not contact ...

The objectives of the present work were: (a) to analyze the Cr(VI) removal by combining activated sludge (AS) with powdered activated carbon (PAC), (b) to analyze the effect of PAC and Cr(VI) on the growth kinetics of ac...

Complexation of enalapril maleate with -cyclodextrin was used to overcome the known enalapril maleate–excipient interaction in solid state. The complex formation was characterized by 13C solid state nuclear magnetic re...

The proposed techniques in recent years for the analysis of superficial waves with multiple transducers have been focused in the identification of different types of waves in the ground. The multistation tests avoid the ...

Green tea extracts are being widely used in food products due to their health-promoting properties. Polyphenols can interact with food proteins leading to the formation of soluble or insoluble complexes; therefore they c...

Ahipa roots chemical composition and physiological parameters were characterised; ahipa flour preparation procedures were selected and the chemical composition and functional properties of these products were studied. Ah...

In this work we study the polytope associated with a 0/1 integer programming formulation for the Equitable Coloring Problem. We find several families of valid inequalities and derive sufficient conditions in order to be ...

Copper is a redox-active metal which acts as a catalyst in the formation of Reactive Oxygen Species (ROS) encouraging oxidative stress. Protection against oxidants is intrinsic to every living cell, however in stress con...

South American camelids comprise the wild species guanaco and vicuña and their respective domestic relatives llama and alpaca. The aim of the present study was to determine by DNA analysis to which of these species belo...

It is shown that a curve q(t), t ∈ I (0 ∈ I) of idempotent operators on a Banach space X, which verifies that for each ξ ∈ X, the map t → q(t)ξ ∈ X is continuously differentiable, can be lifted by means of a...

Let G be the class of all graphs and K the clique operator. The validity of the equality K(G)=K^2(G) has been an open question for several years. A graph in K(G) but not in K^2(G) is exhibited here. Fil: de Caria, Pablo ...

A dense glycocalix covers the surface of Trypanosoma cruzi, the agent of Chagas disease. Sialic acid in the surface of the parasite plays an important role in the infectious process, however, T. cruzi is unable to synthe...