Materials Literature
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Volatile organic compounds (VOCs) are important environmental pollutants that can originate from petroleum refineries, fuel storage and loading procedures, painting and printing operations, and motor vehicles. These compounds usually have high vapor pressure, and therefore, easily appear in gaseous form at ambient tem…
En la memoria de esta tesis doctoral se presenta la preparación y caracterización de especies de PtII y RuII con ligandos que contienen fragmentos CCFc como centros redox activos. Mediante el estudio de las propiedades electroquímicas se ha puesto de manifiesto la influencia tanto de los ligandos y metales que unen lo…
The article solves the Neumann problem for the Laplace equation in a piecewisehomogeneous region bounded by one branch of a hyperbola, and consisting of two symmetrical zones with different permeability. The line between the homogeneous zones consists of a segment with the ideal zones contact and the beam in the form…
The results of dielectric measurements on (NH4)3H(SeO4)2 crystal near the ferroelectric phase transition are presented. The experimental data are described using a dielectric state equation. The coefficients A and B are estimated for several temperatures in paraelectric phase. The measurement at constant temperatures…
En el presente trabajo se presenta un estudio teorico y experimental de la determinacion de la resistencia a traccion de materiales fragiles a partir de la tecnica experimental de spalling. Se utilizan diferentes metodologias propuestas por varios autores para determinar la resistencia a traccion por spalling y se lle…
The article is devoted, to the history of studying of a problem, of stress fractures. The article raised, questions of terminology and statistics of stress fracture at different times by different authors and. the stage-by-stage scientific accumulation of information on this topic is shown.
The paper presents a review of different kinds of electromechanical metal processing. Basing on the analysis of electromechanical processing characteristics the authors suggest using it for manufacturing and restoration of universal joint crosspieces.
This work focuses on the study of chiral discrimination in the solid state in order to obtain new enantiomerically pure compounds. The first part of this project involves the comparative study of crystal structures of racemic compounds and enantiomers for four derivatives (di-imines) of trans-1 ,2- diaminocyclohexane…
Nanoparticles of EuVO4 and Core-shell nanoparticles of EuVO4@YVO4 have been prepared by co-precipitation method. The structures and luminescent properties of both nanoparticles were characterized and compared. The results demonstrate that the surfaces of EuVO4 nanopartilces have been successfully passivated and their…
The problems of non-Newtonian blood flow through a stenosed artery are solved numerically using Finite Volume Method where the non-Newtonian rheology of the flowing blood is characterized by the Generalized Power-law model. The effects of Reynolds number and stenosis severity on the flow behavior were studied. The axi…
Conformal, e.g. cylindrical, metasurfaces are even more diffused in different fields from optics to electromagnetics. Advanced applications as cloaking, i.e. making object invisible/transparent to incident fields, require high precision realizations, since the resonant answer of the system is very sensitive to the geo…
Uma das áreas da nanotecnologia de grande interesse é a da formação de nanopartículas (nanoesferas e nanocápsulas), pois permite o desenvolvimento de fórmulas de liberação controlada, ou seja, aquelas com a capacidade de liberar os agentes ativos adequadamente. Em tais produtos, o princípio ativo protegido é liberado…
Ever since its discovery in 1948, the use of ductile iron is increasing continuously, this is due to the combination of its various excellent mechanical properties of the material. Extensive research is being carried out to develop even better properties. Austempered ductile iron is the most recent development in the…
We report on graphene-based Superconductor-Normal metal-Superconductor Joseph- son junctions with contacts made from lead. The high transition temperature of this superconductor allows us to observe the supercurrent branch at temperatures up to 2 K. We are able to detect a small, but non-zero, resistance despite the…
Diesel Particulate Filter (DPF) is regenerated in particulate matter (PM) oxidation reaction when PM was loaded. In this report, it makes a study regarding basic calculation method of kinetics parameters using the oxidation reaction process of PM that was simulated by laboratory experiments with synthetic gases. Addit…
Resumen del trabajo presentado a la: "International Conference on Diamond and Carbon Materials" celebrada en Granada (España) del 2 al 6 de septiembre de 2012.
Resumen del trabajo presentado al: "International Workshop Science and Technology at High Magnetic Fields" celebrado en Miraflores de la Sierra (Madrid) del 6 al 9 de Noviembre de 2012.-- et al.
A new private soil-testing laboratory began operations this fall in Iowa (based in Ames), testing for most nutrients on non-dried soil samples. This has generated many questions concerning the procedure and interpretations of test results because the common lab procedure for most nutrients is to dry and grind the soil…
Mineral forms of tellurides are considered in the paper. They are typical of epithermal deposits and indicate the physical-chemical conditions of the rock-forming process. Twenty seven mineral species and phases of tellurides and sulfotellurides are found in the Panarechka volcanic-tectonic structure. They are mineral…
By the example of the Resource Center of Moscow College of Architecture and Construction № 7 the author generalizes the results of social and vocational expert examination of module programs focused on building developed by college staff.