Aurel Vlaicu University of Arad

About: Aurel Vlaicu University of Arad is a education organization based out in Arad, Romania. It is known for research contribution in the topics: Fuzzy logic & Fuzzy control system. The organization has 312 authors who have published 904 publications receiving 6727 citations. The organization is also known as: UAV & Universitatea „Aurel Vlaicu” din Arad.

From Plato to Swift and Orwell, from Utopia to Dystopia

Abstract: From Plato to Marx and beyond, human kind had a constant preoccupationfor bettering the world, strived for its improvement and, ultimately, aimed tocreate a perfect society, unaffected by change. This article discusses some well-knownutopian and dystopian literary writings and aims to highlight the developmentof some shared major and minor themes common for both forms. The paperforwards the argument that the utopian is always interrelated with the actual.

Fluorescence influence on screening decisions for oral cancer

Abstract: Objectives: The aim of the present study was to assess the capability of the VELscope system to image the tissue autofluorescence of potentially malignant oral lesions and to assess the diagnostic accuracy, sensitivity, and specificity of this method. Methods: 10 patients were evaluated by conventional oral examination (COE) followed by direct visual fluorescence evaluation (DVFE) using VELscope. Areas clinically suspicious detected by COE or with positive DVFE (visual fluorescence loss (VFL)) have been further investigated using surgical biopsy. The association between COE and DVFE has also been assessed and compared with the gold standard, i.e. histopathology. Results: Eight positive biopsies for malignant lesions were detected using COE and DVFE. Only one positive biopsy for a premalignant lesion was not in accordance with COE and DVFE. One of the lesions, determined on the VELscope and COE as a non-malignant lesion was also confirmed by the biopsy. Therefore, the VELscope system had a sensitivity of 100% and specificity of 50% in discriminating in situ normal mucosa from carcinoma or invasive carcinoma, compared with histology. The predictive positive value was 88.89% and the negative predictive value was 100% (95% confidence interval). Conclusions: DFVE allows for simple and cost-effective margin determinations, in order to detect and screen oral precancerous and early cancerous disorders. We found that for the moment the VELscope system could not replace the histopathology procedure. Nonetheless, its usefulness for clinical examination was determined, as well as for monitoring oral lesions and guiding biopsies. Therefore, this method may add sensitivity to oral tissue examinations and be an effective adjunct procedure for high-risk patients.

MicroCT and optical coherence tomography imagistic assessment of the dental roots adhesive

Abstract: Several obturation methods are available today to study the 3D filling of the root canal. There are also several methods capable to evaluate the ability to seal apically the root canals. However, the common methods of investigation are invasive; they also lead to the destruction of the samples. If the sectioning differs slightly from the desired area, the investigation is non-conclusive regarding the micro-leakages. Also, although the use of Cone-Beam Micro Computer Tomography (CBCT) appears to be most promising for endodontic purposes, its effective radiation doses are higher than with conventional intra-oral and panoramic imaging. In contrast, enface (ef) Optical Coherence Tomography (OCT) proves to be efficient for the investigation of material defects of dental restorations, dental materials, and micro-leakage at the interfaces, where the penetration depth depends on the material. Therefore, ef OCT has been proposed in our studies as a potential tool for in vivo endodontic imaging. Twenty five recently extracted human maxillary molars were selected for the study for caries or periodontal reasons. The pulp chambers were completely opened, the dental pulp was removed, and the root canals were shaped. Silver nanoparticles were used in half of the samples in order to increase the scattering of the adhesive material in comparison with the dental roots walls. The sample teeth were then probed using Time Domain (TD) OCT working at 1300 nm. A synchrotron radiation X-Ray microCT experiment was also performed. The imagistic results pointed out the efficiency of the silver nanoparticle layer used in order to increase the scattering of the root canal adhesive scattering for the OCT non-invasive investigation. MicroCT allowed for obtaining qualitative data related to the depth penetration of the root canal adhesive into the dentin walls. © (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.

Categoria gramaticală a intensităţii în gramaticile actuale ale limbii române

Abstract: The article approaches a current issue of great interest for both thetheoretical and the applied linguistics. It is about the report between theproperties expressed by an adjective or adverb during the act of comparison,which report has been seen as unified by traditional grammar and presentedtherefore undifferentiated. They were called the grammatical category ofcomparative or simply as comparative degree. Lately, the linguists have addedthe concept of intensity parallel with the comparative degree. This has led to theidentification of two grammatical categories: the comparative degree and theintensity without a clear delineation to be made between them.My article reflects the current situation in Romanian grammar. The firststo talk about intensity and in a Romanian grammar were Vladimir Robu andIorgu Iordan in their Contemporary Romanian Language, (Didactic andPedagogic Publishing House, Bucharest, 1978). The idea was taken up in othergrammar books, such as the first and second volume of the RomanianGrammar, The Word and The Statement (Romanian Academy PublishingHouse, Bucharest, 2005) and The Basic Romanian Grammar (EncyclopedicUniverse Publishing, Bucharest, 2010). Both books led to a different solutionthan the one proposed by Vladimir Robu.The information contained in this article is intended as a database for awide analysis of an interesting issue in Romanian grammar today.

Optoelectronic evaluation of indirect dental veneers interfaces

Abstract: Dental indirect veneers have become the most functional and cost-effective method for providing high-aesthetic results whenever smile design enhancement is required. Yet, clinical failures have been reported due to the detachment of the veneers from the dental hard tissues, as well as to chipping and microleakage. Many experimental studies have been conducted in order to identify clinical and technical solutions for enhancing the adhesive and biomechanical properties of the veneers, by promoting the same classical, linear marginal contour of these particular indirect restorations. Thus, the aim of this study is to develop a novel design of the veneers deemed to augment the interfacial adhesive forces and, furthermore, to investigate the bonded interfaces by using optical coherence tomography.