Results 71 to 80 of about 1,996,012 (273)

Synthesis and Studying SomeMechanical Properties of Nanocomposite [PDF]

Engineering and Technology Journal, 2013
This study aims to synthesis a nanocomposite from Al2O3 – Cr2O3 and studying some of its mechanical properties like microhardness and fracture strength. X-Ray diffraction patterns shows a good crystallinity of the composite with very sharp and neat peaks.
Fadhil A. Chyad, Abdul-Raheem K.Abid Ali, Auday A. Mehatlaf   +2 more
doaj   +1 more source

Spatiotemporal chaotic dynamics of solitons with internal structure in the presence of finite-width inhomogeneities

, 1999
We present an analytical and numerical study of the Klein-Gordon kink-soliton dynamics in inhomogeneous media. In particular, we study an external field that is almost constant for the whole system but that changes its sign at the center of coordinates ...
Bellorin, A., Carbo, J. R., Gonzalez, J. A., Guerrero, L. E.   +3 more
core   +1 more source

Dynamic Control of Synaptic Plasticity by Competing Ferroelectric and Trap‐Assisted Switching in IGZO Transistors with Al2O3/HfO2 Dielectrics

Advanced Functional Materials, EarlyView.
A frequency‐tunable ferroelectric synaptic transistor based on a buried‐gate InGaZnO channel and Al2O3/HfO2 dielectric stack exhibits linear and reversible weight updates using single‐polarity pulses. By switching between ferroelectric and trap‐assisted modes depending on input frequency, the device simplifies neuromorphic circuit design and achieves ...
Ojun Kwon, Dong Ho Lee, Seyoung Oh, Jongwon Yoon, Hyo‐Bae Kim, Ji‐Hoon Ahn, Woojin Park, Han Seul Kim, Byungjin Cho   +8 more
wiley   +1 more source

Sols contaminés, sols

, 1996
La décontamination des sols pollués, phénomène longtemps occulté, est devenu une préoccupation majeure des pouvoirs publics et des industries. Les Pays-Bas et la Région flamande ont déjà légiféré dans ce domaine. La République fédérale d'Allemagne est sur le point de le faire.
SERES (Séminaire de droit de l'urbanisme et de l'environnement) - UCL, CÉDRE (Centre d'étude du droit de l'environnement)   +1 more
openaire   +1 more source

Square patterns in Rayleigh-Benard convection with rotation about a vertical axis

, 1998
We present experimental results for Rayleigh-Benard convection with rotation about a vertical axis at dimensionless rotation rates in the range 0 to 250 and upto 20% above the onset.
Brian Naberhuis, E. Bodenschatz, E. Moses, F. Busse, F. H. Busse, F. H. Busse, F. Zhong, F. Zhong, F. Zhong, G. Ahlers, G. Küppers, G. Küppers, Guenter Ahlers, J. J. Niemela, J. Liu, J. R. deBruyn, Jun Liu, Kapil M. S. Bajaj, L. Ning, M. A. Dominguez-Lerma, M. C. Cross, M. R. E. Proctor, R. Clever, R. E. Ecke, S. Chandrasekhar, Y. Liu, Y.-C. Hu, Y.-C. Hu, Y.-C. Hu   +28 more
core   +1 more source

High‐Entropy Perovskite Nanofibers for Bifunctional Air Electrodes in Reversible Protonic Ceramic Electrochemical Cells

Advanced Functional Materials, EarlyView.
High‐entropy perovskite nanofibers serve as robust and active bifunctional air electrodes in reversible protonic ceramic electrochemical cells. Their compositional complexity stabilizes the lattice, enriches oxygen vacancies, and accelerates surface exchange.
Hyeonggeun Kim, Incheol Jeong, Seeun Oh, Dongyeon Kim, Kang Taek Lee   +4 more
wiley   +1 more source

Thermally Induced Fluctuations Below the Onset of Rayleigh-B\'enard Convection

, 1995
We report quantitative experimental results for the intensity of noise-induced fluctuations below the critical temperature difference $\Delta T_c$ for Rayleigh-B\'enard convection.
David S. Cannell, E. Bodenschatz, E. Bodenschatz, Guenter Ahlers, H. Iwasaki, H. van Beijeren, I. Rehberg, J. B. Swift, L. D. Landau, M. A. Dominguez-Lerma, M. P. Vukalovich, Mingming Wu, P. C. Hohenberg, R. Graham, S. Angus, S. Rasenat, V. M. Zaitsev, V. Steinberg, W. Schöpf   +18 more
core   +1 more source

Analysis of the Electrochemical Stability of Sulfide Solid Electrolyte Dry Films for Improved Dry‐Processed Solid‐State Batteries

Advanced Functional Materials, EarlyView.
An adapted processing for solvent‐free argyrodite solid electrolyte films based on insights into degradation mechanisms of the widely used binder polytetrafluoroethylene is presented. By adapting the dry film processing, long‐term cycling in Si||NMC pouch cells is demonstrated over more than 1000 cycles with a capacity retention of more than 80%, and ...
Maria Rosner, Sahin Cangaz, Felix Hippauf, Susanne Dörfler, Burak Aktekin, Thomas Meyer, Anja Henss, Thomas Abendroth, Holger Althues, Jürgen Janek, Stefan Kaskel   +10 more
wiley   +1 more source

Soliton motion in a parametrically ac-driven damped Toda lattice

, 1998
We demonstrate that a staggered parametric ac driving term can support stable progressive motion of a soliton in a Toda lattice with friction, while an unstaggered drivng force cannot.
A. R. Bishop, B. A. Malomed, Boris A. Malomed, D. Cai, D. Cai, D. W. McLaughlin, J. Hietarinta, K. Ø. Rasmussen, M. Grønbech-Jensen, M. Remoissenet, Niels Grønbech-Jensen, P. S. Lomdahl, S. Flach   +12 more
core   +1 more source

‘Oxygen Bound to Magnesium’ as High Voltage Redox Center Causes Sloping of the Potential Profile in Mg‐Doped Layered Oxides for Na‐Ion Batteries

Advanced Functional Materials, EarlyView.
Na‐ion batteries ‐ Impact of doping on the oxygen redox: The sloping potential of NaMg0.1Ni0.4Mn0.5O2 above 4.0 V is caused by a new redox center (arising from the ‘O bound to Mg’), having a higher potential but being more irreversible compared to the ‘O bound to Ni’.
Yongchun Li, Konstantin Köster, Katherine A. Mazzio, Yanan Sun, Annica I. Freytag, Deniz Wong, Christian Schulz, Götz Schuck, Volodymyr Baran, Alba San Jose Mendez, Marcin Zając, Payam Kaghazchi, Philipp Adelhelm   +12 more
wiley   +1 more source