Mesostructured porous materials possess unique surface, structural, and bulk properties that lead to important practical applications. By retaining structure-directing species in the product material, mesostructured organic-inorganic composites are obtained which are of broad interest for fundamental studies of confinement effects and surface interaction on structural and dynamic properties of ...

The objective was to evaluate the effect of different irrigation systems and harvest frequencies on cultivation cactus pear. study conducted in semi-arid region, municipality Russas, CE, Brazil. experiment a split plot randomized block design, with four replications. Plots were represented by (surface drip, microsprinkler, Micro Spray Jet, conventional sprinkler) subplots (6, 9, 12, 18 months)....

Mesostructured chalcogenide-based materials with long-range order and semiconducting properties can be prepared using suitable molecular building blocks, linkage metal ions and surfactant molecules. In this paper we present surfactant templated, open framework platinum tin selenide and telluride materials assembled using K4SnQ4 (Q = Se, Te) salts and K2PtCl4 as precursors and a study of pore an...

Lipids active in biological systems demonstrate a broad range of behavior in water, from hydrocarbons which are insoluble, to molecules such as bile salts that possess potent detergent properties and interact with water rather dynamically. The purpose of this paper is to describe some of the physical properties of lipids with respect to their inter— action with aqueous systems, and to classify ...

Fou r coprolite s were exceveted with Burial S at Ventena Cave . a part ially mummified five-year-old child. Two coprolites were p1Ulular and dark. in cokx and two were fibrous and light in color . The coprolisn are remains of the child 's intestinal contents and were submitted for dietary andparasitological anal ysis. No parasites were found. The fibrous coprolites proved to be remains of high...

The pitahaya, pitaya or dragon fruit is an exotic fruit that comes from a type of cactus and has a lot of beneficial nutrients for health. It is a cacti plant, and as such, very resistant to droughts. The plant is a succulent, rustic cactus, with long triangular stems, whose tentacles search the rocks incessantly for which they feel a special predilection, whether there is earth nearby or not; ...

Similar to the tree-width (twd), the clique-width (cwd) is an invariant of graphs. A well known relationship between tree-width and clique-width is that cwd(G) ≤ 3 · 2. It is also known that treewidth of Cactus graphs is 2, therefore the clique-width for those graphs is smaller or equal than 6. In this paper, it is shown that the clique-width of Cactus graphs is smaller or equal to 4 and we pre...

We describe the Astrophysics Simulation Collaboratory (ASC) portal, a collaborative environment in which distributed projects can perform research. The ASC project seeks to provide a web-based problem solving framework for the astrophysics community to harness computational Grids. To facilitate collaboration amongst distributed researchers within a virtual organization, the ASC Portal supplies ...