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Publicatii proprii
Dental pulp as a stem cell reservoir.
Currently, much information is provided regarding the presence and the roles in tissue regeneration of stem cell niches residing in post-natal dental pulp. So far, three types of adult stem cells have been isolated from dental pulp. Correct evaluation of these cells is important in order to determine their potential use in clinical fields. The present study aims to review the origins and immunophenotype of these cells. The particularities of interstitial
Read morePhase stability analysis using a reduction method
Phase stability testing is an important sub-problem in phase equilibrium calculations, which require the most important computational effort in reservoir compositional simulations and some process simulators. In this work, a new reduction method for phase stability analysis is proposed. Based on the multi-linear expression of the logarithm of fugacity coefficients as functions of some component properties (elements of the reduction matrix) and of
Read moreSRK and PR alpha functions for ice
In order to avoid possible phase inconsistencies in water saturation point calculations, this paper proposes to treat ice as a regular component. For SRK and PR cubic equations of state, the goal of this paper is to provide the parameters of an alpha function able to very accurately reproduce the vapor pressure over ice between 173 K and 273.16 K.
Read moreA rapid and robust method for solving the Rachford–Rice equation using convex transformations
The Rachford–Rice equation must be solved in an inner loop of flash calculations. It consists in a sum of hyperbolas, and the desired root is located between two asymptotes which define the negative flash window. First, a simple procedure to remove the adjacent poles by changing the variable is proposed. Then, a class of convex transformations is identified, and several elementary functions that respect the general convexity condition are recognized.
Read more‘Cyanide kills!’ Environmental movements and the construction of environmental risk at Rosia Montana, Romania
This study examines the issue of environmental risk involved in a proposed gold-mining project at Rosia Montana, Romania, as it was articulated in the discourses and strategies of the environmentalists protesting against it. We base our paper on the idea that environmental risk has a socially constructed horizon and that counter-discourses on risk represent a fundamental contribution of the environmental protesters to the anti-mining movement. This
Read moreReview of applications on Coandã effect. history, theories, new trends
The Coandã effect is an interesting phenomenon in fluid mechanics discovered by the Romanian inventor Henri Marie Coandã. The physics of the Coandã effect is based on the property of a jet flow to attaches itself to a nearby surface and to remain attached even when the surface bends away from the initial jet direction. In free surroundings, a jet of fluid entrains and mixes with its surroundings as it flows away from a nozzle. The final result
Read moreMateriale Compozite. Volumul 2: Obtinerea prin Metalurgia Pulberilor (MP) a materialelor compozite pe baza de Aluminiu /COMPOSITE MATERIALS, VOL.2 Powder Metallurgy (P/M) Processing of Aluminium Matrix Composites (AMCs)
In the second volume of the Composite Materials' book is presented in detail the aluminum based composite obtained by powder metallurgy (PM) route (the technology steps in powder metallurgy processing, respectively phenomena and processes that occur during each stage of PM technology). The book's targeted audience is primarily students of materials and mechanical science and engineering specializations, as well as students, engineers and researchers
Read moreA computer method for nonlinear inelastic analysis of 3D composite steel-concrete frame structures
This paper presents an efficient computer method for nonlinearinelastic analysis of threedimensional composite steel-concrete frameworks. The proposed formulation is intended to model the geometrically nonlinear inelastic behaviour of composite frame elements using only one element per physical member. The behaviour model accounts for material inelasticity due to combined bi-axial bending and axial force, gradual yielding is described through basic
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