Materials Literature
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This experimental program has studied the behavior of fresh paste made up from cements mixed with dolomite filler. Through prior experiments the starting point is obtained for the designs 22 and 23 factorials. With these designs the governing equations are established that influence the specific surface of the filler,…
The altarpiece of the Assumption of Mary is located in the High Altar of the Pilar Basilica in Zaragoza and is one of the most important works of the Spanish Artistic Heritage. The work, sculptured in alabaster, was carried out between 1509 and 1518 by Damián Forment. The present paper covers the guidelines for the de…
The goals states in this work are included in a study with different volumetric dosifications, using different kinds of soils like aggregates, and cement and lime like binding material to be used in mansonry mortars. The mortars were caracterized by determining the R a/c, Rf and Re to different ages, R adh. to 28 days…
In this work ceramic materials as electrical insulators have been exposed in laboratory-based chambers. Water contact angle and FTIR of the surface before and after pollutant exposures have been studied. The results indicated that the reaction between the policrete and the atmospheric pollutant produce some salts depo…
Distributive fluid mixing in laminar flows is studied using the concept of concentration distribution mapping matrices, which is based on the original ideas of Spencer & Wiley [1], describing the evolution of the composition of two fluids of identical viscosity with no interfacial tension. The flow domain is divided i…
To develop cosmetic products quickly and effectively, developers need reliable test methods for evaluating product stability. Phenomena that determine the stability of cosmetic emulsions include phase transitions taking place in the relevant application and storage temperature range. The tendency of ingredients to cry…
Abstract The role of fluid immobilization (FIM) is not only of great importance for solid food systems with respect to their stability, but is also a crucial factor for the rheological behaviour of suspension systems [1]. Besides the fluid binding mechanisms known for porous solids an additional hydro-dynamically indu…
The geometries of four-coordinate CuI and CuII complexes in the Cambridge Structural Database (CSD) have been analysed systematically and compared using symmetry-deformation coordinates and principal component analysis. The observed stereochemistries have been rationalized in terms of the d-electron configurations, in…
An in situ self-assembly technique with nanometre control over thicknesses and multilayered structures was used to manufacture the ultrathin films of polypyrrole (PPY). The PPY film was deposited on a polyanion, poly(styrene sulfonate) (PSS) modified surface as a function of time, previously PSS had been deposited on…
Ag -TiO2 nanocermet thin films, deposited for optical filtering applications by two sputtering techniques, codeposition and multilayer deposition, exhibit surface plasmon absorption in the spectral range 450 -500 nm. The cosputtering technique induces a columnar growth, whereas multilayer deposition produces a more-ra…
X-ray diffraction (XRD) and extended X-ray absorption fine structure (EXAFS) were used to evidence a cationic order within sheets of the layered double hydroxides (LDH) [Zn−Cr−Cl] and [Cu−Cr−Cl]. The [Zn−Cr−Cl] LDH is well kown for its ability to be synthesized only with the ratio Zn/Cr = 2, whatever the proportion of…
Pure ultrafine ZnFe2O4 particles have been obtained from mechanosynthesis of the ZnO and Fe2O3 oxides. The average grain diameter was estimated from x-ray diffraction to be 〈d〉=36(6) nm. Refinement of neutron diffraction data showed that the resulting cubic spinel structure is oxygen deficient, with ∼7% of Fe3+ ions o…
Charge ordering occurs in some mixed-valent transition metal oxides. The perovskite manganates of the formula Ln 1 - x A x MnO 3 (Ln = rare earth; A = Ca, Sr) are especially interesting because long-range ordering of the Mn 3+ ( ) and Mn 4+ ( ) ions in these materials is linked to antiferromagnetic spin ordering, and…