Search Results - "Novaconi Stefan"

Removal of Methylene Blue by Activated Glass Foams with TiO2 in Dark and Simulated Solar Light by Rus Florina Stefania, Novaconi Stefan Danica, Vlazan Paulina, Ivanovici Madalina

“…The effect of germanium trapezoidal profile shape on the direct current (DC) current gain (βF), cut-off frequency (fT) and maximum oscillation frequency (fMAX)…”
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α-MnO2 Nanowire Structure Obtained at Low Temperature with Aspects in Environmental Remediation and Sustainable Energy Applications by Taranu, Bogdan-Ovidiu, Novaconi, Stefan Danica, Ivanovici, Madalina, Gonçalves, João Nuno, Rus, Florina Stefania

“…Hydrothermally obtained α-MnO2 nanowire characterizations confirm the tetragonal crystalline structure that is several micrometers long and 20–30 nm in…”
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Doped Bi2Te3 nano-structured semiconductors obtained by ultrasonically assisted hydrothermal method by Novaconi Stefan, Vlazan Paulina, Malaescu Iosif, Badea Iulia, Grozescu Ioan, Sfirloaga Paula

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Predictable building enveloping based on enhanced glass foam insulation with heat reflective properties by Novaconi, Stefan Danica, Ivanovici, Madalina, Rus, Florina Stefania

“…Commercial glass foam was covered with 1–4 layers of coating containing titanium dioxide (TiO2) to study thermal efficiency and changes in the reflection and…”
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Dielectric, ferroelectric and piezoelectric proprieties of GdCoO3 doped (K0.5Na0.5)NbO3 by Bucur, Raul Alin, Badea, Iuliana, Bucur, Alexandra Ioana, Novaconi, Stefan

“…•GdCoO3 doping stabilizes the room temperature orthorhombic phase.•High Curie temperatures were observed.•A ferroelectric softening effect was noticed.•An…”
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Good Quality Factor in GdMnO3-Doped (K0.5Na0.5)NbO3 Piezoelectric Ceramics by Bucur, Raul Alin, Badea, Iuliana, Bucur, Alexandra Ioana, Novaconi, Stefan

“…(1 −  x )(K 0.5 Na 0.5 )NbO 3  −  x GdMnO 3 (KNN– x GM) ferroelectric ceramics (0 ≤  x  ≤ 5 mol.%) were obtained through a solid state technique. For all the…”
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BaSnO3 based thermally stable capacitors by Bucur, Raul Alin, Bucur, Alexandra Ioana, Novaconi, Stefan, Nicoara, Irina

“…► BaSn1−xTixO3–0.5mol%GeO2, x=0, 0.1, 0.3 ceramics were prepared at 1190°C. ► GeO2 addition improves crystallization and densification. ► εr′ is constant in a…”
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Dielectric, ferroelectric and piezoelectric proprieties of GdCoO sub(3) doped (K sub(0.5)Na sub(0.5))NbO sub(3) by Bucur, Raul Alin, Badea, Iuliana, Bucur, Alexandra Ioana, Novaconi, Stefan

“…Lead free piezoelectric ceramics (1-x)(K sub(0.5)Na sub(0.5))NbO sub(3)-xGdCoO sub(3) (0 [< or =, slant] x [< or =, slant] 5 mol%) were prepared by…”
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Removal of Methylene Blue by Activated Glass Foams with TiO 2 in Dark and Simulated Solar Light by Rus, Florina Stefania, Novaconi, Stefan Danica, Vlazan, Paulina, Ivanovici, Madalina

“…The effect of germanium trapezoidal profile shape on the direct current (DC) current gain (βF), cut-off frequency (fT) and maximum oscillation frequency (fMAX)…”
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Synthesis and characterization of BaTi1−xSnxO3–0.5mol%GeO2 by Bucur, Raul Alin, Bucur, Alexandra Ioana, Novaconi, Stefan, Nicoara, Irina

“…► BaTi1−xSnxO3–0.5mol%GeO2 (x=0, 0.1, 0.3, 0.5) ceramics were prepared at 1190°C. ► GeO2 improves crystallization and densification. ► Anomalies are noted for…”
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Synthesis and characterization of BaTi1axSnxO3-0.5ANBmol%GeO2 by Bucur, Raul Alin, Bucur, Alexandra Ioana, Novaconi, Stefan, Nicoara, Irina

“…Microcrystalline BaTi1axSnxO3-0.5 mol%GeO2 x = 0, 0.1, 0.3, 0.5 (BTSx-0.5Ge) and BaTiO3 (BT) ceramics (1-0.5 mu m) were prepared by a conventional solid-state…”
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Synthesis and characterization of BaTi1―xSnxO3―0.5 mol%GeO2 by ALIN BUCUR, Raul, IOANA BUCUR, Alexandra, NOVACONI, Stefan, NICOARA, Irina

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Electrical properties optimization of silver nanowires supported on polyethylene terephthalate by Banica, Radu, Ursu, Daniel, Svera, Paula, Sarvas, Claudia, Rus, Stefania F., Novaconi, Stefan, Kellenberger, Andrea, Racu, Andrei V., Nyari, Terezia, Vaszilcsin, Nicolae

“…The aim of this study is the enhancement of the electrical properties of thin films obtained from silver nanowires (AgNWs) deposited on a flexible polyethylene…”
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Automatic Stand for Testing the Influence of Humidity and Temperature on Dielectric Charges by Tarfulea, Nicolae, Frigura-Iliasa, Flaviu Mihai, Frigura-Iliasa, Mihaela, Mirica, Marius, Balcu, Florin Ionel, Novaconi, Stefan

“…Used for their excellent electrical behavior, as well as for their other good general properties, polymers are today applied mostly for the electrical…”
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Simulation of Electric Space Charges in Cavities Located Inside Industrial Dielectrics by Frigura-Iliasa, Mihaela, Mirica, Marius, Frigura-Iliasa, Flaviu Mihai, Novaconi, Stefan, Balcu, Florin Ionel, Macarie, Amalia Corina

“…Having excellent dielectrical properties combined with other good physical properties, polymers are used today for the electrical insulation of underground…”
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