Results 61 to 70 of about 4,334,827 (265)

Generalized Variational Principles on Oscillation for Nonlinear Nonhomogeneous Differential Equations

open access: yesAbstract and Applied Analysis, 2011
Using the generalized variational principle and the Riccati technique, new oscillation criteria are established for the forced second-order nonlinear differential equation, which improves and generalizes some of the new results in literature.
Jing Shao, Fanwei Meng
doaj   +1 more source

Historical Foundation and Practical Guideline for Ferroelectric Switching Kinetic Studies

open access: yesAdvanced Functional Materials, EarlyView.
The P and U pulses in the conventional PUND measurements are not identical because of the interplay between switching current and the measurement circuit components. This circuit effect can lead to a shift in polarization transients and misinterpreted physics in the switching kinetics.
Yi Liang, Pat Kezer, John T. Heron
wiley   +1 more source

Glissile Interphase Boundaries Enable Collective Phase Switching in Epitaxial Polar Oxides

open access: yesAdvanced Functional Materials, EarlyView.
A triple point is identified in the phase diagram of low‐symmetry epitaxial BiFeO3 thin film along with an extended regime of phase competition associated with a flattened energy landscape. The electromechanical response is shown to be governed by correlated interphase‐boundary motion, including scale‐free avalanche dynamics characteristic of systems ...
Mohammad Moein Seyfouri   +11 more
wiley   +1 more source

Utility of Forced Oscillation Technique in Detecting Obstruction in Asthma and the Significance of ‘Isolated Increase in R5-R20’ (II R5-R20) [PDF]

open access: yesJournal of Cardio-Thoracic Medicine
Introduction & objective : The objective of this retrospective observational study was to investigate the role of forced oscillometry in detecting airway obstruction in asthma and to compare its sensitivity to that of spirometry in detecting airway ...
Akhil Paul
doaj   +1 more source

Forced oscillation technique for determination of resistance to breathing in children [PDF]

open access: yesArchives of Disease in Childhood, 1973
A method for measuring total respiratory resistance (RT) using a forced oscillation technique was applied to children between 3 and 12 years of age. RT at midinspiration was higher than airway resistance (Raw) measured on the same children by total body plethysmography.
openaire   +2 more sources

Structure‐Guided Dynamical Mechanics in Bioinspired Double Twisted Laminated Thin Films

open access: yesAdvanced Functional Materials, EarlyView.
This work explores a dynamic mechanistic study of crack propagation and puncture testing via real‐time monitoring of crack initiation, propagation, and termination through nature‐inspired single and double twisted architectures fabricated from cellulose nanocrystals.
Justin Brackenridge   +4 more
wiley   +1 more source

Forced oscillation technique to assess exercise and post-exercise bronchodilator responses in preterm-born children

open access: yes, 2022
Forced oscillation technique to assess exercise and post-exercise bronchodilator responses in preterm-born ...
Michael Cousins (12009662)   +7 more
core  

Strong Lead‐Free Bioinspired Piezoceramics for Durable Energy Transducers

open access: yesAdvanced Functional Materials, EarlyView.
We fabricated brick‐and‐mortar lead‐free piezoceramics with Bi0.5Na0.5TiO3 monocrystal platelets as bricks and amorphous silica as mortar. The alignment of the bricks and the presence of the amorphous silica led to anisotropic residual stresses. These residual stresses increase the samples toughness, strength and durability while the brick alignment ...
Ruxue Yang   +12 more
wiley   +1 more source

Forced oscillation technique (FOT) reference values: Does one size fit all?

open access: yes, 2022
Forced oscillation technique (FOT) reference values: Does one size fit ...
Claire Shackleton (13369920)   +5 more
core  

Gradient‐Conductivity Architecture Enables Synchronous Enhancement of Sensitivity and Detection Range in Multifunctional All‐Paper Sensors

open access: yesAdvanced Functional Materials, EarlyView.
A gradient‐engineered all‐paper sensor is fabricated by integrating MXene and in situ grown AgNPs within hierarchical cellulose networks. The device breaks the sensitivity–detection range trade‐off through cascaded conductive pathways, enabling ultrahigh pressure sensitivity, humidity–pressure decoupled dual‐mode sensing, and outstanding EMI shielding,
Ao Li   +7 more
wiley   +1 more source

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