Browsing Colecția instituțională by Title

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  • High-pressure optical and vibrational properties of CdGa2Se4: Order-disorder processes in adamantine compounds 
    GOMIS, O.; VILAPLANA, R.; MANJÓN, F. J.; PÉREZ-GONZÁLEZ, E.; LÓPEZ-SOLANO, J.; RODRÍGUEZ-HERNÁNDEZ, P.; MUÑOZ, A.; ERRANDONEA, D.; RUIZ-FUERTES, J.; SEGURA, A.; SANTAMARÍA-PÉREZ, D.; TIGINYANU, I. M.; URSAKI, V. V. (American Institute of Physics, 2012)
    High-pressure optical absorption and Raman scattering measurements have been performed in defect chalcopyrite (DC) CdGa2Se4 up to 22 GPa during two pressure cycles to investigate the pressure-induced order-disorder phase ...
  • High-pressure Raman scattering study of defect chalcopyrite and defect stannite ZnGa2Se4 
    VILAPLANA, R.; GOMIS, O.; PÉREZ-GONZÁLEZ, E.; ORTIZ, H. M.; MANJÓN, F. J.; RODRÍGUEZ-HERNÁNDEZ, P.; MUÑOZ, A.; ALONSO-GUTIÉRREZ, P.; SANJUÁN, M. L.; URSAKI, V. V.; TIGINYANU, I. M. (AIP Publishing LLC, 2013)
    High-pressure Raman scattering measurements have been carried out in ZnGa2Se4 for both tetragonal defect chalcopyrite and defect stannite structures. Experimental results have been compared with theoretical lattice dynamics ...
  • High-pressure study of the structural and elastic properties of defect-chalcopyrite HgGa2Se4 
    GOMIS, O.; VILAPLANA, R.; MANJÓN, F. J.; SANTAMARÍA-PÉREZ, D.; ERRANDONEA, D.; PÉREZ-GONZÁLEZ, E.; LÓPEZ-SOLANO, J.; RODRÍGUEZ-HERNÁNDEZ, P.; MUÑOZ, A.; TIGINYANU, I. M.; URSAKI, V. V. (American Institute of Physics, 2013)
    In this work, we focus on the study of the structural and elastic properties of mercury digallium selenide (HgGa2Se4) which belongs to the family of AB2X4 ordered-vacancy compounds with tetragonal defect chalcopyrite ...
  • High-pressure x-ray diffraction study on the structure and phase transitions of the defect-stannite ZnGa2Se4 and defect-chalcopyrite CdGa2S4 
    ERRANDONEA, D.; KUMAR, Ravhi S.; MANJÓN, F. J.; URSAKI, V. V.; TIGINYANU, I. M. (American Institute of Physics, 2008)
    X-ray diffraction measurements on the sphalerite-derivatives ZnGa2Se4ZnGa2Se4 and CdGa2S4CdGa2S4 have been performed upon compression up to 23 GPa in a diamond-anvil cell. ZnGa2Se4ZnGa2Se4 exhibits a defect tetragonal ...
  • High-Rate Pulsed Galvanostatic Anodic Dissolution of Chromium−Nickel Steels in Electrolytes for Electrochemical Machining: The Role of Surface Temperature 
    DIKUSAR, A. I.; LIKRIZON, E. A.; DIKUSAR, G. K. (Springer Nature Switzerland, 2021)
    A pulsed galvanostatic anodic dissolution of chromium−nickel steels (types Kh18N10 (Cr18Ni10) and KhN35VT (CrNi35WT)) under the conditions of electrochemical machining is studied in chloride, nitrate, and mixed chloride−nitrate ...
  • A highly efficient bridge inverter with doubled output voltage 
    SAINSUS, Iurie; CONEV, Alexei; RUSSEV, Iurii; SIDORENCO, Anatoly (Institutul de Inginerie Electronică şi Nanotehnologii "D. Ghiţu" al AŞM, 2019)
    A common problem in equipping cars, buses, and other vehicles is the incompatibility of household appliances (coffee makers, converters, radio-receiving sets, audio amplifiers, etc.) that are powered by a constant current ...
  • Highly luminescent columnar ZnO films grown directly on n-Si and p-Si substrates by low-temperature electrochemical deposition 
    LUPAN, Oleg; PAUPORTÉ, Thierry; URSAKI, V. V.; TIGINYANU, I. M. (ELSEVIER, 2011)
    In this study, nanocolumnar zinc oxide thin films were catalyst-free electrodeposited directly on n-Si and p-Si substrates, what makes an important junction for optoelectronic devices. We demonstrate that ZnO thin films ...
  • Highly Porous and Ultra-Lightweight Aero-Ga2O3: Enhancement of Photocatalytic Activity by Noble Metals 
    PLESCO, Irina; CIOBANU, Vladimir; BRANISTE, Tudor; URSAKI, Veaceslav; RASCH, Florian; SARUA, Andrei; RAEVSCHI, Simion; ADELUNG, Rainer; DUTTA, Joydeep; TIGINYANU, Ion (MDPI, 2021)
    A new type of photocatalyst is proposed on the basis of aero-β-Ga2O3, which is a material constructed from a network of interconnected tetrapods with arms in the form of microtubes with nanometric walls. The aero-Ga2O3 ...
  • Highly responsive planar millimeter wave zero-bias Schottky detector with impedance matched folded dipole antenna 
    HOEFLE, M.; HAEHNSEN, K.; OPREA, I.; COJOCARI, O.; PENIRSCHKE, A.; JAKOBY, R. (IEEE, 2013)
    A compact highly responsive planar zero-bias Schottky detector is proposed for uni-planar and low-cost fabrication. Various zero-bias Schottky diodes are investigated, in particular the optimization of impedance matching ...
  • Highly selective and ultra-low power consumption metal oxide based hydrogen gas sensor employing graphene oxide as molecular sieve 
    RASCH, Florian; POSTICA, Vasile; SCHÜTT, Fabian; MISHRA, Yogendra Kumar; NIA, Ali Shaygan; LOHE, Martin R.; FENG, Xinliang; ADELUNG, Rainer; LUPAN, Oleg (ELSEVIER, 2020)
    The excellent gas sensing performance of metal oxide based nano- and microstructures, including a fast response time and good sensitivity, is typically limited by their low selectivity. Therefore, novel approaches and ...
  • Highly sensitive and selective Acetone gas sensors based on Au - surface decorated CuO nanostructures 
    ABABII, Nicolai; SONTEA, Victor; CHOW, Lee; LUPAN, Oleg (IEEE, 2017)
    Recently, our group has demonstrated that by virtue functionalization of CuO nanostructured films with Au nanoparticles, it is possible to detect acetone vapors with very low concentrations of down to 10 ppm with high ...
  • Highly sensitive and selective hydrogen single-nanowire nanosensor 
    LUPAN, O.; CHOW, L.; PAUPORTE, Th.; ONO, L. K.; ROLDAN CUENYA, B.; CHAI, G. (ELSEVIER, 2012)
    Metal oxides such as ZnO have been used as hydrogen sensors for a number of years. Through doping, the gas response of zinc oxide to hydrogen has been improved. Cadmium-doped ZnO nanowires (NWs) with high aspect ratio have ...
  • The historical evolution of ex-libris 
    ONU, Andreea; GÎLCA, Ana-Maria (Universitatea Tehnică a Moldovei, 2023)
    The study presents an analysis on the evolution of the art of ex-libris. It was established that throughout the centuries, culture, status, artistic movements, and technology shaped bookplate design. Each design flows out ...
  • The history and development of winemaking 
    ZNACOVAN, Ilona (Universitatea Tehnică a Moldovei, 2022)
    In this article the author wants to highlight the importance of wine among many peoples in different periods of history. To do this, I need to delve into the history of the development of this wonderful drink, starting ...
  • History of Faberge eggs 
    CROITORU, Gheorghe; RUSU, Ion (“Dunarea de Jos” University of Galati, 2010)
    Faberge's primary source of inspiration came from works of previous centuries. Translucent enameling was a valued technique in the nineteenth century that required several coats of applied enamel and the "firing" of the ...
  • The history of technology and the european unity 
    HERLEA, Alexandru (Tehnica UTM, 2014)
    This paper sets into parallel lines the birth and the evolution, in Europe, of a discipline—the History of Technology—and that of an idea which leads to the construction of the European Union. It shows the dependence of ...
  • The Holistic Approach to Cybersecurity in Academia 
    ALEXEI, Arina; NISTIRIUC, Pavel; ALEXEI, Anatolie (Association for Computing Machinery, 2022)
    Academic institutions are increasingly implementing digital services and new technologies, for a modern and accessible educational environment. But the virtual environment creates unknown vulnerabilities that need to be ...
  • Holocaustul – istorie și lecție de viață 
    DOROFTEI, Mihaela; TOMA, Carolina (Universitatea Tehnică a Moldovei, 2023)
    În articolul dat vom analiza fenomenul istoric al secolului trecut care a fost o lecție de viață tragică pentru toți care au trait acele timpuri și pentru noi înșine. Holocaustul a fost o minifestare politică, planificată ...
  • Homo Juris – profesorul Alexandru Herlea (1907 – 1979) 
    HELEREA, Elena (Tehnica UTM, 2013)
    Nu în toate societăţile Homo Juris este recunoscut, stimat, apreciat. Perioada de instaurare a regimului comunist în România este o dovadă, iar viaţa, opera şi destinul profesorului universitar doctor jurist Alexandru ...
  • Homogenization of the nanomodified concrete mixture in the magneto fluidized layer 
    GONCIARUC, V. P.; BOLOGA, M. K.; RUSU, I. V.; POLICARPOV, A. A.; VRABIE, E. Gh.; SPINU, V. V. (Institutul de Fizică Aplicată, AŞM, 2018)
    Recently, nanotechnologies are beginning to be widely used in construction, which are aimed primarily at improving the quality of mineral binders and, above all, Portland cement. Two directions are observed: the first ...

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