Results 91 to 100 of about 25,212 (303)

Oscillation criteria for second order nonlinear neutral differential equations of mixed type

Electronic Journal of Qualitative Theory of Differential Equations, 2012
Some oscillation criteria are established for the second order nonlinear neutral differential equations of the form \begin{equation*} \left( \left( x(t)+a x(t-\tau_1)-b x(t+\tau_2)\right)^\alpha\right)''=q(t) x^\beta (t-\sigma_1)+p(t)x^\beta(t+\sigma_2)
Ethiraju Thandapani, Renu Rama
doaj   +1 more source

Basal Ganglia Beta Oscillations Accompany Cue Utilization [PDF]

Neuron, 2012
Beta oscillations in cortical-basal ganglia (BG) circuits have been implicated in normal movement suppression and motor impairment in Parkinson's disease. To dissect the functional correlates of these rhythms we compared neural activity during four distinct variants of a cued choice task in rats. Brief beta (∼20 Hz) oscillations occurred simultaneously
Leventhal, Daniel K., Gage, Gregory J., Schmidt, Robert, Pettibone, Jeffrey R., Case, Alaina C., Berke, Joshua D.   +5 more
openaire   +2 more sources

Thermal‐Driven Diode Polarity Switching From Competing Helical Superconducting States in WTe2/α‐Fe2O3 Heterostructures

Advanced Materials, EarlyView.
A Nb‐proximitized Josephson junction based on a WTe2/α‐Fe2O3 heterostructure exhibits a robust superconducting diode effect with programmable polarity. The diode direction can be trained by magnetic fields and switched by temperature cycling, revealing tunable finite‐momentum pairing states and competing superconducting states in symmetry‐broken ...
Enze Zhang, Grant Z. X. Yang, Zi‐Ting Sun, Xinhou Chen, Shishun Zhao, Chufan Chen, Chenhui Zhang, Fanrui Hu, K. T. Law, Hyunsoo Yang   +9 more
wiley   +1 more source

Minimal model for membrane oscillations in the pancreatic beta-cell

Biophysical Journal, 1983
Following the experimental findings of Atwater et al. (In Biochemistry Biophysics of the Pancreatic-beta-Cell, George Thieme Verlag, New York, 100-107), we have formulated a mathematical model for ionic and electrical events that take place in pancreatic-beta-cells.
Chay, T.R., Keizer, J.
openaire   +2 more sources

Dexime: A Selectively Enzyme‐Degradable Hydrogel for Protein Therapeutic Release

Advanced Materials, EarlyView.
A dextrin‐oxime hydrogel (dexime) is produced using ketone or aldehyde modified dextrin and tetra‐oxyamine modified poly(ethylene glycol). The rheological and mechanical properties of dexime are tunable. Dexime is injectable, cytocompatible, hydrolytically stable, and selectively degradable by α‐amylase.
Quinton E. A. Sirianni, Nitzan Letko Khait, Adam Forman, Edward A. Armstrong, Karim Fouad, Molly S. Shoichet   +5 more
wiley   +1 more source

Neuromorphic Electronics for Intelligence Everywhere: Emerging Devices, Flexible Platforms, and Scalable System Architectures

Advanced Materials, EarlyView.
The perspective presents an integrated view of neuromorphic technologies, from device physics to real‐time applicability, while highlighting the necessity of full‐stack co‐optimization. By outlining practical hardware‐level strategies to exploit device behavior and mitigate non‐idealities, it shows pathways for building efficient, scalable, and ...
Kapil Bhardwaj, Roshni Satheesh Babu, Yuxin Xia, Eva Bestelink, Radu Sporea, Nikos Hastas, Ioannis Zeimpekis, Dimitra G. Georgiadou, Sayani Majumdar   +8 more
wiley   +1 more source

Temporal and Spatial Patterns of the Interannual Variability of Stratospheric Ozone and Dynamics [PDF]

, 2004
This dissertation is a collection of empirical and modeling studies focusing on the interannual variability (IAV) of stratospheric ozone and the dynamics associated with that variability. Empirical analyses of the IAV of total column ozone in the tropics
Camp, Charles David
core   +1 more source

Age Effect on Automatic Inhibitory Function of the Somatosensory and Motor Cortex: An MEG Study

Frontiers in Aging Neuroscience, 2018
Age-related deficiency in the top-down modulation of cognitive inhibition has been extensively documented, whereas the effects of age on a bottom-up or automatic operation of inhibitory function were less investigated.
Chia-Hsiung Cheng, Chia-Hsiung Cheng, Chia-Hsiung Cheng, Chia-Hsiung Cheng, Mei-Yin Lin, Mei-Yin Lin, Shiou-Han Yang, Shiou-Han Yang   +7 more
doaj   +1 more source

When Poor Exciton Dissociation Limits Photocurrents in Organic Solar Cells: Why Low Offset Non‐Fullerene Acceptor Blends Can't Be Efficient

Advanced Materials, EarlyView.
The energetic offset between the donor and the acceptor components in organic photoactive layers is central to the tradeoff between photovoltage and photocurrent losses. This Perspective covers the most important issues surrounding this topic in non‐fullerene acceptor blends, from the difficulty of accurately determining state energies and driving ...
Dieter Neher, Manasi Pranav
wiley   +1 more source

Oscillatory glucose flux in INS 1 pancreatic beta cells: A self-referencing microbiosensor study

, 2011
Signaling and insulin secretion in beta cells have been reported to demonstrate oscillatory modes, with abnormal oscillations associated with type 2 diabetes.
Claussen, Jonathan C., Rickus, Jenna, Jonathan C. Claussen, Mirmira, Raghavendra, Jaroch, David, Eric S. McLamore, McLamore, Eric, Jin Shi, D. Marshall Porterfield, Shi, Jin, David Jaroch, Jenna L. Rickus, Porterfield, D. Marshall, Raghavendra G. Mirmira   +13 more
core   +1 more source