Articole din publicaţii internaţionale: Recent submissions

  • Aerodynamic efficiency enhancement for asymmetric profiles 
    BOSTAN, Viorel; GUŢU, Marin; ODAINÂI, Valeriu (EDP Sciences, 2009)
    This paper presents a solution for enhancement of aerodynamic efficiency for asymmetric airfoils. In order to increase the lift and reduce the drag forces for a blade segment, a groove was created on its surface. There ...
  • Adaptive Finite Element Solution of Variational Inequalities with Application in Contact Problems 
    BOSTAN, Viorel; HAN, Weimin (Springer Nature Switzerland, 2009)
    In this chapter, we perform a posteriori error analysis for the adaptive finite element solution of several variational inequalities, including elliptic variational inequalities of the second kind and corresponding quasistatic ...
  • A posteriori error estimation and adaptive solution of elliptic variational inequalities of the second kind 
    BOSTAN, Viorel; HAN, Weimin; REDDY, B. D. (Elsevier, 2005)
    In this paper, we perform an a posteriori error analysis for adaptive finite element solutions of elliptic variational inequalities of the second kind. A general framework for a posteriori error estimates is established ...
  • A posteriori error analysis for finite element solutions of a frictional contact problem 
    BOSTAN, Viorel; HAN, Weimin (Elsevier, 2006)
    In this paper, we derive and analyze a residual type a posteriori error estimator for finite element approximations of a frictional contact problem for linearized elastic materials. The reliability of the estimator is ...
  • A posteriori error analysis for elliptic variational inequalities of the second kind 
    BOSTAN, V.; HAN, W.; REDDY, B. D. (Elsevier, 2003)
    This chapter derives the posteriori error estimates for the finite element approximation of elliptic variational inequalities of the second kind, by using the duality theory in convex analysis. An example in which the ...
  • Spectrophotometric determination of polyphenolic and protein content of young white wines in the Moldova area 
    HORTOLOMEU, Andreea; SCUTARU, Iurie; ARSENI, Alexandra; STURZA, Rodica; NISTOR, Ileana Denisa (Alma Mater Publishing House of the University of Bacãu, Romania, 2021)
    In this paper, the processes of protein stability were treated in order to identify the level of protein substances as well as the polyphenolic compounds in white wines. For an optimal determination of the oxidation degree, ...
  • Gas-sensing features of nanostructured tellurium thin films 
    TSIULYANU, Dumitru (Beilstein Institute for the Advancement of Chemical Sciences (Germany), 2020)
    Nanocrystalline and amorphous nanostructured tellurium (Te) thin films were grown and their gas-sensing properties were investigated at different operating temperatures with respect to scanning electron microscopy and X-ray ...
  • Functional nanostructures for electronics, spintronics and sensors 
    SIDORENKO, Anatolie S. (Beilstein Institute for the Advancement of Chemical Sciences, Germany, 2020)
    Nanotechnology and functional nanostructures, exciting trends of the 21st century, are topics that have penetrated and influenced nearly all areas of human activity: from microelectronics to biology, from aerospace to ...
  • Technologies of capture and storage of energy from renewable sources 
    CRISTESCU, Corneliu; DUMITRESCU, Catalin; DRUMEA, Petrin; DULGHERU, Valeriu; KEDZIA, Krzysztof (HERVEX, 2016)
    The article presents some considerations general related to renewable energies, and some technologies for capture, conversion and storage of renewable energies, practiced globally, emphasizing the need for technical solutions ...
  • Selection of a Solution When Using Axiomatic Design 
    SLĂTINEANU, Laurenţiu; DODUN, Oana; COTEAŢĂ, Margareta; DULGHERU, Valeriu; DUŞA, Petru; BANCIU, Felicia; BEŞLIU, Irina (MATEC Web of Conferences, 2017)
    Over the years, the importance of the creativity inclusively in the field of design activities was highlighted. In accordance with the opinions of certain researchers, the divergent thinking could contribute to the increase ...
  • Reducing conventional fuel consumption by implementing hybrid energy production systems 
    DUMITRESCU, C.; DULGHERU, V.; CRISTESCU, C.; DUMITRESCU, L.; BLEJAN, M.; RADOI, R. (University Politehnica Timisoara, 2017)
    Benefiting from significant renewable energy resources, Romania has made great strides in recent years in the field of converting solar and wind energy; in addition to these, hydraulic energy has been exploited for several ...
  • New evolutions, directions and trends in conversion and storage of renewable energies 
    CRISTESCU, Corneliu; DUMITRESCU, Liliana; DULGHERU, Valeriu; DUMITRESCU, Catalin (SGEM World Science, 2018)
    The special resources of renewable energy identified in Romania have generated far more extensive concerns and research on their capture, storage and use. The first part of this paper presents a couple of renewable energy ...
  • Integrated irrigation system with photovoltaic panels and wind turbine 
    BOSTAN, Ion; BOSTAN, Viorel; DULGHERU, Valeriu; SOBOR, Ion (Technical Sciences Academy of Romania, 2017)
    The issue of global food security is amplified by the rapid increase of the population, the climate change that is manifested by the increase of the severity and the variability of the climate. The only safe means of ...
  • Increasing Energy Efficiency and Optimizing the Operation of Systems That Produce Clean Energy from Renewable Sources 
    CRISTESCU, Corneliu; DUMITRESCU, Cătălin; DULGHERU, Valeriu; POPESCU, Teodor Costinel (Hidraulica Magazine, 2017)
    This paper presents some general issues regarding the development of research concerns in the field of renewable energy worldwide, as well as some research directions for increasing the efficiency of renewable energy ...
  • Dynamic model elaboration for the planetary-precessional gear reducer against vibration 
    DULGHERU, Valeriu; MALCOCI, Iulian (EDP Sciences, 2018)
    The purpose of modern-day machines in general and gear-box in particular is to carry out needs-based on maintenance, good working conditions and to minimize the repair and other servicing downtimes and disfunctionalities. ...
  • Development of technical creativity in higher education 
    SLATINEANU, Laurentiu; DULGHERU, Valeriu; BANCIU, Felicia; COTEATA, Margareta; NAGIT, Gheorghe; BESILIU, Irina; DODUN, Oana (ToKnowPress, 2016)
    Technical higher education should provide to student/future engineer scientific and technical knowledge and skills for understanding and using various technical equipment, and also for designing and developing new or ...
  • Blended teaching and learning approach applied to electrical and computer engineering education 
    ADĂSCĂLIŢEI, Adrian; ARĂDOAIEI, Sebastian Teodor; TODOS, Petru Ion; DULGHERU, Valeriu (Technical Sciences Academy of Romania, 2020)
    The article presents a review of the current e-pedagogical methods to develop Electrical and Computer Engineering Education (ECEE) Study Programs using Blended an Learning (BTL). Engineering crucial experimental competences ...
  • Binary Superimposed Gratings Formed by e-Beam Recording in Amorphous AsS Films 
    SERGEEV, S. A.; IOVU, M. S.; ENACHI, M. A. (American Scientific Publishers, 2014)
    Binary unidirectional superimposed diffraction gratings with grating periods of 0.9 μm and 1 μm were formed in amorphous AsS films by e-beam recording. The influence of recording sequence of index superimposed gratings on ...
  • Advanced Hybrid GaN/ZnO Nanoarchitectured Microtubes for Fluorescent Micromotors Driven by UV Light 
    WOLFF, Niklas; CIOBANU, Vladimir; ENACHI, Mihail; KAMP, Marius; BRANISTE, Tudor; DUPPEL, Viola; SHREE, Sindu; RAEVSCHI, Simion; MEDINA-SÁNCHEZ, Mariana; ADELUNG, Rainer; SCHMIDT, Oliver G.; KIENLE, Lorenz; TIGINYANU, Ion (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2020)
    The development of functional microstructures with designed hierarchical and complex morphologies and large free active surfaces offers new potential for improvement of the pristine microstructures properties by the ...
  • Travelling-wave analysis of extended cavity diode lasers 
    TRONCIU, V.; ARAR, B.; WENZEL, H. (Romanian Academy Publishing House, 2020)
    We report results of numerical simulations of the dynamic properties of single-transverse mode diode lasers subject to an external optical feedback provided by a volume holographic Bragg grating. We use the traveling-wave ...

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