Results 11 to 20 of about 21,916 (214)

Analysis of the Phase Transitions in BNT-BT Lead-Free Ceramics Around Morphotropic Phase Boundary by Mechanical and Dielectric Spectroscopies

Archives of Metallurgy and Materials, 2016
In this work, the syntheses and characterization by mechanical and dielectric spectroscopies of (1-x) Bi0.5Na0.5TiO3-xBaTiO3 (BNT-100xBT), with x = 0.05, 0.06 and 0.07, lead-free piezoelectric ceramics is reported.
Silva P.S., Diaz J.C.C.A., Florêncio O., Venet M., M’Peko J.C.   +4 more
doaj   +3 more sources

Characteristics of BNT Films Synthesized by a Hydrothermal Method [PDF]

Advanced Materials Research, 2008
Thin films of lead-free piezoelectric ceramics (Bi1/2Na1/2)TiO3 (abbreviated as BNT) were prepared on pure titanium substrates by a hydrothermal method. Several properties of BNT films synthesized in various Bi3+ and Ti4+ concentrations of starting materials were investigated using SEM, EDX, XRD and other instruments.
Fang Chao Xu, Kazuhiro Kusukawa
openaire   +2 more sources

PENGARUH PENAMBAHAN BKT PADA PIEZOELEKTRIK RAMAH LINGKUNGAN BI0,5NA0,5TIO3-BATIO3-BI0,5K0,5TIO3 (BNT-BT-BKT)

JIF (Jurnal Ilmu Fisika), 2011
Proses sintesis BNT-BT-BKT telah dilakukan dengan menggunakan metode solid state reaction. Sintesis BNT-BT dengan penambahan % mol BKT yaitu 2%, 5%, 8%, 15% juga mendapatkan struktur perovskite dengan komposisi yang optimal pada penambahan 5% mol BKT ...
Alimin Mahyudin
doaj   +3 more sources

Thermoelectric coupling effect in BNT-BZT-xGaN pyroelectric ceramics for low-grade temperature-driven energy harvesting

Nature Communications, 2023
Pyroelectric energy harvesting has received increasing attention due to its ability to convert low-grade waste heat into electricity. However, the low output energy density driven by low-grade temperature limits its practical applications.
Meng Shen, Kun Liu, Guanghui Zhang, Qifan Li, Guangzu Zhang, Qingfeng Zhang, Haibo Zhang, Shenglin Jiang, Yong Chen, Kui Yao   +9 more
doaj   +2 more sources

Processing and characterizations of BNT-KNN ceramics for actuator applications [PDF]

Processing and Application of Ceramics, 2016
BNT-KNN powder (with composition 0.93Bi0.5Na0.5TiO3–0.07K0.5Na0.5NbO3) was synthesized as a single perovskite phase by conventional solid state reaction route and dense ceramics were obtained by sintering of powder compacts at 1100 °C for 4 h. Dielectric study confirmed relaxor behaviour, whereas the microstructure study showed sharp cornered cubic ...
Mallam Chandrasekhar, Pawan Kumar
openaire   +3 more sources

Cognitive reserve and longitudinal changes in brain and cognition in semantic variant primary progressive aphasia. [PDF]

Alzheimers Dement
Abstract INTRODUCTION Cognitive reserve (CR) refers to the brain's ability to maintain cognitive performance despite neurodegeneration. Studying CR in semantic variant primary progressive aphasia (svPPA) may clarify variability in disease progression and identify protective factors.
Grebe LA, Morin BT, Pillai J, Baquirin DPG, Ratnasiri B, Bogley R, Ezzes Z, Wauters LD, Mandelli ML, Miller ZA, Tee BL, de Leon J, Casaletto KB, Rosen HJ, Gorno Tempini ML, Galletta EE, Goral M, Vonk JMJ.   +17 more
europepmc   +2 more sources

Evaluation of Antibody Response to Heterologous Prime–Boost Vaccination with ChAdOx1 nCoV-19 and BNT162b2: An Observational Study

Vaccines, 2021
In several countries, thrombotic events after vaccination with ChAdOx1 nCoV-19 have led to heterologous messenger RNA (mRNA) boosting. We tested the antibody response to SARS-CoV-2 spike protein four weeks after heterologous priming with the ChAdOx1 ...
Davide Firinu, Andrea Perra, Marcello Campagna, Roberto Littera, Federico Meloni, Francesca Sedda, Maria Conti, Giulia Costanzo, Monica Erbi, Gianmario Usai, Carlotta Locci, Mauro Giovanni Carta, Riccardo Cappai, Germano Orrù, Stefano Del Giacco, Ferdinando Coghe, Luchino Chessa   +16 more
doaj   +1 more source

Cognitive Outcome After Deep Brain Stimulation for Refractory Obsessive–Compulsive Disorder: A Systematic Review

Neuromodulation: Technology at the Neural Interface, EarlyView., 2021
Abstract Introduction Deep brain stimulation (DBS) is an effective treatment for refractory obsessive–compulsive disorder (OCD). Neuropsychological assessment contributes to DBS treatment in several ways: it monitors the cognitive safety of the treatment, identifies beneficial or detrimental cognitive side effects and it could aid to explain ...
Tim A. M. Bouwens van der Vlis, Annelien Duits, Mégan M. G. H. van de Veerdonk, Anne E. P. Mulders, Koen R. J. Schruers, Yasin Temel, Linda Ackermans, Albert F. G. Leentjens   +7 more
wiley   +1 more source

Kepribadian Introvert Dan Ekstrovert Berbasis Pumping HR Model Terhadap Sasaran Kerja Pegawai Negeri Sipil Dinas Pertanian Kota Bogor

Jurnal Manajemen, 2020
Good governance is a set of processes that are implemented in an organization to make a decision. Human self can not be separated from the so-called personality. Personality is a dynamic organization of individual psycho-physical systems.
Didong Suherbi, , Ahmad Juwaini, Amir Tengku Ramly   +2 more
doaj   +1 more source

Comparing Heterologous and Homologous COVID-19 Vaccination: A Longitudinal Study of Antibody Decay

Viruses, 2023
The humoral response after vaccination was evaluated in 1248 individuals who received different COVID-19 vaccine schedules. The study compared subjects primed with adenoviral ChAdOx1-S (ChAd) and boosted with BNT162b2 (BNT) mRNA vaccines (ChAd/BNT) to ...
Chiara Orlandi, Giuseppe Stefanetti, Simone Barocci, Gloria Buffi, Aurora Diotallevi, Ettore Rocchi, Marcello Ceccarelli, Sara Peluso, Daniela Vandini, Eugenio Carlotti, Mauro Magnani, Luca Galluzzi, Anna Casabianca   +12 more
doaj   +1 more source