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Search Results: 1 - 10 of 208538 matches for " L. MEHEDIN?EANU "
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Aerul ?i Apa : Componente ale Mediului , 2012,
Abstract: TRENDS IN VARIABILITY OF WATER FLOW OF TELEAJEN RIVER. In the context of climate change at global and regional scale, this study intends to identify the trends in variability of the annual and monthly flow of Teleajen river. The study is based on processing the series of mean, maximum and minimum flows at Cheia and Moara Domneasc hydrometric stations (these data were taken from the National Institute of Meteorology and Hydrology). The period of analysis is 1966-1998, statistical methods beeing mostly used, among which the Mann – Kendall test, that identifies the liniar trend and its statistic significance, comes into focus. The trends in the variability of water annual and monthly flows are highlighted. The results obtained show downward trends for the mean and maximum annual flows, and for the minimum water discharge, a downward trend for Cheia station and an upward trend for Moara Domneasc station. Knowing the trends in the variability of the rivers’ flow is important empirically in view of taking adequate administration measures of the water resources and managment measures for the risks lead by extreme hidrologic events (floods, low-water), according to the possible identified changes.
Sicca to Lymphoma: Sjogren Syndrome  [PDF]
Laura Heretiu, Denisa Prede?eanu
Open Journal of Rheumatology and Autoimmune Diseases (OJRA) , 2013, DOI: 10.4236/ojra.2013.31005

Sjogren Syndrome (SS) is an autoimmune disease characterized by a lymphocytic infiltration of exocrine glands. This abnormality leads to the destruction of these glands with the clinical expression of the sicca syndrome (dry eyes and dry mouth). Usually Sjogren Syndrome follows a non-aggressive course, but patients suffering from this disease have a very high risk of developing malignant lymphoma (MALT). The evolution from benign lymphocytic infiltration characteristic of Sjogren Syndrome to malignant lymphoma (usually MALT subtype) is a multistep process [1-3]. We present the case of 35 years old woman admitted to Sf. Maria Clinical Hospital—Bucharest, Romania, in the Rheumatology Department in May 2011, representative for the diagnosis difficulties as well as for the unfortunate evolution. She was diagnosed with primary Sjogren Syndrome in 2004. The first symptoms of the disease, dry eyes and dry mouth, appeared in 2000 but they were undermined by some hematological disorders, as the patient had a low white blood cell count at the biological evaluation. Four years later, when the diagnosis of Sjogren Syndrome was set, she already had some negative prognosis factors. In the end, the disease had an unfavorable outcome, as the patient developed non-Hodgkin malignant lymphoma for an unfortunate evolution.

Relations between Transylvania and the Nordic countries in the 19th century as seen in Romanian periodicals. A quantitative and qualitative analysis
Mihaela Mehedin?i
Revista Romana de Studii Baltice si Nordice , 2011,
Abstract: :History usually demonstrates that if two areas are remote they tend not to be in contact so often. At a first glance this seems to be the case of 19th century Transylvania’s connexions with the Nordic countries, but was this really the case? Or it is more likely that the relations between those two areas were not examined thoroughly enough until now? The present study aims at offering some answers to these important research questions by rendering a comprehensive image of the ways in which Sweden, Denmark, Norway and Finland were portrayed in three largely circulated Romanian periodicals from Transylvania. Based on the quantitative and qualitative analysis of the 623 pieces of news published by Foaie pentru minte, inim i literatur , Familia and Gazeta de Transilvania between 1838 and 1919 this paper shows that Transylvanians were rather well informed in what concerned the Nordic countries in the 19th century, that they positively appreciated the literary works that stemmed from this area and that they strongly positioned the Nordic countries within Europe.Rezumat:Istoria demonstreaz c , de obicei n cazul n care dou zone sunt ndep rtate, ele tind s nu fie n contact atat de des. La o prim vedere acesta pare a fi cazul conexiunilor din secolul al XIX-lea ale Transilvaniei cu rile nordice, dar a fost, ntr-adev r, acesta cazul?Sau este mai probabil ca rela iile dintre cele dou arii s nu fi fost destul de atent examinate pan acum?Studiul de fa i propune s ofere cateva r spunsuri la aceste ntreb ri de cercetare importante, f cand o imagine cuprinz toare a modului n care Suedia, Danemarca, Norvegia i Finlanda au fost prezentate n trei periodice romane ti de mare circula ie din Transilvania. Bazate pe analiza cantitativ i calitativ a 623 de tiri publicate de c tre Foaie pentru minte, inim i literatur ”, Familia” i Gazeta de Transilvania” ntre anii 1838 i 1919, acest articol arat c ardelenii au fost destul de bine informa i n ceea ce prive te rile nordice n secolul al XIX-lea, c au apreciat pozitiv operele literare provenite din aceast zon i c integrau cu fermitate rile nordice n interiorul Europei.
Magnetism and electronic structure calculation of SmN
C. Morari,F. Beiu?eanu,I. Di Marco,L. Peters,E. Burzo,S Mican,L. Chioncel
Physics , 2014, DOI: 10.1088/0953-8984/27/11/115503
Abstract: The results of the electronic structure calculations performed on SmN by using the LDA+U method with and without including the spin-orbit coupling are presented. Within the LDA+U approach, a N(2$p$) band polarization of $\simeq 0.3\ \mu_B$ is induced by Sm(4$f$)-N(2$p$) hybridization, and a half-metallic ground state is obtained. By including spin-orbit coupling the magnetic structure was shown to be antiferromagnetic of type II, with Sm spin and orbital moments nearly cancelling. This results into a semiconducting ground state, which is in agreement with experimental results.
Electronic structure and magnetic properties of metallocene multiple-decker sandwich nanowires
C. Morari,H. Allmaier,F. Beiu?eanu,T. Jurcu?,L. Chioncel
Physics , 2011, DOI: 10.1103/PhysRevB.85.085413
Abstract: We present a study of the electronic and magnetic properties of the multiple-decker sandwich nanowires ($CP-M$) composed of cyclopentadienyl (CP) rings and 3d transition metal atoms (M=Ti to Ni) using first-principles techniques. We demonstrate using Density Functional Theory that structural relaxation play an important role in determining the magnetic ground-state of the system. Notably, the computed magnetic moment is zero in $CP-Mn$, while in $CP-V$ a significant turn-up in magnetic moment is evidenced. Two compounds show a half-metallic ferromagnetic ground state $CP-Fe/Cr$ with a gap within minority/majority spin channel. In order to study the effect of electronic correlations upon the half-metallic ground states in $CP-Cr$, we introduce a simplified three-bands Hubbard model which is solved within the Variational Cluster Approach. We discuss the results as a function of size of the reference cluster and the strength of average Coulomb $U$ and exchange $J$ parameters. Our results demonstrate that for the range of studied parameters $U=2-4eV$ and $J=0.6-1.2eV$ the half-metallic character is not maintained in the presence of local Coulomb interactions.
Valentina B RB EANU
Lex et Scientia , 2012,
Abstract: This paper intends to reveal the role played by the constitutional courts or other bodies entitled to perform the constitutional review of normative acts in enhancing the significance of the National Basic Laws and in developing their content. The research will try to show that the case-law created by the constitutional jurisdictions can shape the perception of the society on the Basic Law, offering a different perspective over its meaning. This is the effect of the interpretation of the Basic Law provisions, which is an inherent part of the constitutional jurisdictions’ activity.
Quantitative Accelerated Life Testing of MEMS Accelerometers
Marius Bazu,Lucian G?l??eanu,Virgil Emil Ilian,Jerome Loicq,Serge Habraken,Jean-Paul Collette
Sensors , 2007, DOI: 10.3390/s7112846
Abstract: Quantitative Accelerated Life Testing (QALT) is a solution for assessing thereliability of Micro Electro Mechanical Systems (MEMS). A procedure for QALT is shownin this paper and an attempt to assess the reliability level for a batch of MEMSaccelerometers is reported. The testing plan is application-driven and contains combinedtests: thermal (high temperature) and mechanical stress. Two variants of mechanical stressare used: vibration (at a fixed frequency) and tilting. Original equipment for testing at tiltingand high temperature is used. Tilting is appropriate as application-driven stress, because thetilt movement is a natural environment for devices used for automotive and aerospaceapplications. Also, tilting is used by MEMS accelerometers for anti-theft systems. The testresults demonstrated the excellent reliability of the studied devices, the failure rate in the“worst case” being smaller than 10-7h-1.
Annals of the University of Petrosani : Economics , 2010,
Abstract: The firms could take into consideration internal or external sources for financing, the differences between them being connected with the stability, independence and cost. Even the internal sources ensures a high degree of independency to the firm, they are not always efficient. Under these circumstances and the conditions of insufficient self-financing, the existence at national level of the tendency of undercapitalization and increase of their debt level, the Romanian firms make use more and more of external sources of financing, especially the banking credits. Therefore, in this study we intend to present a model for optimization the cost of the financing through the bank credit. This model is going to help the managers of the companies to find innovative solutions and to assure the competitiveness and the development of their companies.
Analytical model of the transversal flux inductor
Monica Popa,Virgiliu Fire?eanu
Journal of Electrical and Electronics Engineering , 2009,
Abstract: This paper deals with the computation basedon an analytical model of the induced currents, thedensity of the active power in the sheet to be heated,the transversal profile of this density integrated alongthe sheet and the efficiency of an induction heatingsystem for thin sheets of transversal flux type. Theanalytical model uses a database that contains set ofresults of 3D numerical modeling performed withFlux3D. The analytical model is a useful tool for fastcomputation and can be easily coupled with anoptimization procedure in order to obtain a minimumnon-uniformity of the transversal profile of inducedpower in the sheet.
Mircea Alexandru R?du?eanu
Studia Universitatis Vasile Goldis Arad, Seria Stiinte Economice , 2012,
Abstract: In recent decades international management itself as a separate component of the general science of leadership, is an intercultural management. In this context of globalization, computerization, any business that wants have a modern management should have a structured information system based on communication, overall objective consisting in providing accurate data in real time all parties, increasing the level of communication. Given these considerations, we conducted this work trying to highlight the role of communication in achieving a modern, emphasizing international management features.The paper is divided into 6 parts, prefaced by an introduction of the paper we presented and completed within a set of conclusions on the effectiveness of communication. During the other paragraphs, we present the theoretical concepts of international management, communication, after which I stressed the role of information communication, managerial communication and will then focus on the process, taking stock of its specific stages in international management.
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