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5 results on '"DILEA, Mirela"'

2. MEASURING DEVICES, EXPERIMENTAL STANDS AND EQUIPMENT USED FOR THE STUDY OF ARTIFICIAL SOIL COMPACTION.

Author

UNGUREANU, Nicoleta, VOICU, Gheorghe, BIRIŞ, Sorin-Ştefan, PARASCHIV, Gigel, DILEA, Mirela, IONESCU, Mariana, VLĂDUŢ, Valentin, and MATACHE, Mihai

Subjects
ARTIFICIAL plant growing media, SOIL structure, SOIL testing, TRANSDUCERS, RECIPROCATING pumps
Abstract

The phenomenon of artificial soil compaction occurs everywhere when moving on foot or by car and soils are covered by ponding water, even after relatively small rains (due to succesive passages on soil surface, succesive rains or the absence of adequate recovery works of soil structure). This phenomenon was intensively studied by researchers in our country and abroad, using specific equipment and instruments that allow to determine various parameters that characterize the artificial compaction of soil. This paper presents the most important devices, experimental stands and equipment used for the study of soil compaction, highlighting the measurement method and the parameters which can be determined. [ABSTRACT FROM AUTHOR]

Published
2015

3. RESEARCHES REGARDING THE OBTAINING PROCESS OF VEGETABLE OIL USING PRESSES.

Author

IONESCU, Mariana, VOICU, Gheorghe, BIRIŞ, Sorin-Ştefan, DILEA, Mirela, ŞTEFAN, Mădălina-Elena, and UNGUREANU, Nicoleta

Subjects
VEGETABLE oils, VEGETABLE oil presses, SUNFLOWER seed oil, NOZZLES, REGRESSION analysis
Abstract

Within this paper are presented the results obtained from the pressing sunflower seeds using a screw press having constant diameter, with circular holes for oil drainage and a single nozzle for cake outlet. From the results it was observed the dependence between the oil yield and the nozzle diameter, the variation of the oil percentage expressed along the pressing chamber and the influence of nozzle diameter on the specific energy consumed for pressing the material. The experimental results were subjected to regression analysis using Microcal Origin version 7.0 program. [ABSTRACT FROM AUTHOR]

Published
2015

5. Electrochemical behavior in simulated body fluid of TiO2 nanotubes on TiAlNb alloy elaborated in various anodizing electrolyte.

Author

Mazare, Anca, Dilea, Mirela, Ionita, Daniela, and Demetrescu, Ioana

Subjects
*ELECTROCHEMICAL analysis, *BODY fluids, *TITANIUM oxides, *ANODIC oxidation of metals, *ELECTROLYTES
Abstract

The present study is focused on tailoring the morphology of TiO2 nanotubes obtained on Ti6Al7Nb alloy and evaluating their electrochemical behavior in simulated body fluid. The presence of the α and β phases on the Ti6Al7Nb alloy leads to a two-scale organization of the nanotubes on the samples - which in turn affects the electrochemical stability. Furthermore, five different types of TiO2 nanotubes were obtained in various electrolytes (e.g. Generation I, a mixture of Generation II and Generation III, Generation III). Electrochemical behavior analysis of all obtained nanotubes morphologies was composed of Tafel plots, cyclic voltammetry and electrochemical impedance spectroscopy and was correlated with morphology data obtained from SEM (nanotubes diameters from top-view and nanotube length from cross-section view). The electrochemical results showed that morphological modifications of the Ti6Al7Nb alloy's surface by electrochemical anodizing have induced changes to the electrochemical behavior of the material, evident in the corrosion rates. Copyright © 2014 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]

Published
2014
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