Results 71 to 80 of about 112,422 (307)

High frequency polarization switching of a thin ferroelectric film

, 2010
We consider both experimentally and analytically the transient oscillatory process that arises when a rapid change in voltage is applied to a $Ba_xSr_{1-x}TiO_3$ ferroelectric thin film deposited on an $Mg0$ substrate. High frequency ($\approx 10^{8} rad/
A. F. Devonshire, A. I. Maimistov, E. D. Mishina, E. V. Kazantseva, G. A. Smolensky, J.-G. Caputo, L. D. Landau, L. Landau, O. Vendik, V. L. Ginzburg, V. L. Ginzburg, V. M. Mukhortov, Yu. I. Balkarei   +12 more
core   +1 more source

A nanoflare model of quiet Sun EUV emission [PDF]

, 2006
Nanoflares have been proposed as the main source of heating of the solar corona. However, detecting them directly has so far proved elusive, and extrapolating to them from the properties of larger brightenings gives unreliable estimates of the power-law ...
A. Pauluhn, Arzner, Aschwanden, Aschwanden, Audard, Brkovic, Datlowe, Güdel, Harrison, Innes, Krucker, Lin, Lu, Mitra-Kraev, Parker, Parnell, Pauluhn, Rosner, S. K. Solanki, Torrence, Vekstein, Wilhelm, Wilhelm, Winebarger, Withbroe   +24 more
core   +2 more sources

Targeting Post‐Irradiation Thyroid Dysfunction: Electrospun Scaffolds As A Dual‐Action Approach for Antioxidant and Immune Modulation

Advanced Healthcare Materials, EarlyView.
Radiation‐induced hypothyroidism follows head and neck radiotherapy due to oxidative stress and inflammation. Electrospun polycaprolactone scaffolds containing adenosine have potential to modulate thyroid repair. Scaffolds enhance thyrocyte proliferation, antioxidant enzymes glutathione peroxidase and catalase, reduce senescence and apoptosis markers ...
Maria Heim, Ella‐Louise Handley, Daniel Grant, Lizi M. Hegarty, Elaine Emmerson, Anthony Callanan   +5 more
wiley   +1 more source

A Transient Damping Improvement Strategy for Enhancing Grid-Connected Active Power Response Performance of VSG

Energies
The given power and grid frequency disturbances can cause transient oscillations and steady-state deviations in the output power of a virtual synchronous generator (VSG), which can be effectively addressed by adding transient damping.
Yan Xia, Yang Chen, Renzhao Chen, Ke Li, Huizhu Li, Jinhui Shi, Yiqiang Yang   +6 more
doaj   +1 more source

Transient and steady-state velocity of domain walls for a complete range of drive fields [PDF]

Approximate analytic solutions for transient and steady-state 180 deg domain wall motion in bulk magnetic material are obtained from the dynamic torque equations with a Gilbert damping term.
Bartran, D. S., Bourne, H. C., Jr.
core   +1 more source

Non-modal approach to linear theory: marginal stability and the dissipation of turbulent fluctuations

, 2009
The non-modal approach for a linearized system differs from a normal mode analysis by following the temporal evolution of some perturbed equilibria, and therefore includes transient effects.
Borgogno, David Burgess, Enrico Camporeale, Galtier, Howes, Marsch, Matthaeus, Press, Salem, Thierry Passot, Trefethen   +10 more
core   +3 more sources

A MEMS viscometer for unadulterated human blood [PDF]

, 2010
The design and theoretical modelling of an oscillating micro-mechanical-viscometer designed for the measurement of whole unadulterated human blood, is described. The proposed device utilises the dependence of the squeeze-film damping ratio on properties
Andrews, Bandey, Blech, Boskovic, Burg, C.R. Chatwin, Chu, Cross, de Simone, Den Hartog, Fertis, Gabrielson, Hausler, Jones, Kajima, Kim, Kim, Macosko, Oden, O’Neil, P.D. Smith, Petersen, Puers, R.C.D. Young, Roark, Romoscanu, Rosenson, Saulson, Shin, Shin, Singer, Steidel, Vellekoop, Vidic, Wang, Winther   +35 more
core   +1 more source

Microfluidic Modeling of Macrophage‐Induced Cardiac Inflammation Using NF‐κB Reporter Cardiomyocytes

Advanced Healthcare Materials, EarlyView.
A cardiac inflammation model was developed to enable real‐time analysis of macrophage‐cardiomyocyte interactions using NF‐κB‐reporter cardiomyocytes and a microfluidic co‐culture system. A MATLAB‐based model was implemented to optimize cell density and medium resupply based on TNFα diffusion kinetics. Activation thresholds and stress responses in NF‐κB‐
Chao Liu, Xi Rui Qiang Lu, Seoyoung Jeong, Douglas H. Wu, Rodrigo A. Somoza, Parameswaran Ramakrishnan, Samuel E. Senyo   +6 more
wiley   +1 more source

Analysis of Dynamic Performance of Magnetic Field Modulated Gear

Jixie chuandong, 2017
The magnetic field modulated gear is a new technology,compared with the traditional mechanical gear,it can effectively avoid vibration,noise,lubrication and other issues.
Liu Meijun, Bao Guangqing, Hou Chenchen, Zuo Zhengpu, Liu Mingmin   +4 more
doaj  

Comparison of experimental rotor damping data-reduction techniques [PDF]

The ability of existing data reduction techniques to determine frequency and damping from transient time-history records was evaluated. Analog data records representative of small-scale helicopter aeroelastic stability tests were analyzed.
Warmbrodt, William
core   +1 more source