Results 121 to 130 of about 212,713 (312)

Initial Distance‐Dependent Mean Force Drives Synaptic Vesicle Motion Toward Fusion Sites in Stimulated Hippocampal Neurons

open access: yesAdvanced Science, EarlyView.
Synaptic vesicle (SV) motion and exocytosis dynamics in the presynaptic terminals of live neurons are intimately linked to synaptic transmission during neuronal activity. In this work, it is revealed that, during electrical stimulation, SVs located farther from their fusion sites exhibit greater straightness and experience larger mean forces directed ...
Gyunam Park   +7 more
wiley   +1 more source

Coupling of lever arm swing and biased Brownian motion in actomyosin.

open access: yesPLoS Computational Biology, 2014
An important unresolved problem associated with actomyosin motors is the role of Brownian motion in the process of force generation. On the basis of structural observations of myosins and actins, the widely held lever-arm hypothesis has been proposed, in
Qing-Miao Nie   +5 more
doaj   +1 more source

Autonomous Polymer Frameworks for Sustainable Tissue‐Interfaced Plastic Bioelectronics

open access: yesAdvanced Science, EarlyView.
This review focuses on plastic bioelectronic systems integrated with autonomous polymer frameworks (auto‐POFs) and summarizes recent progress in this field. It provides an in‐depth analysis of the design strategies and operational mechanisms of auto‐POFs, highlighting their pivotal role in enhancing the sustainability and interfacial adaptability of ...
Elvis K. Boahen   +8 more
wiley   +1 more source

A Versatile Strategy for Light‐Driven Active Transport of Ions

open access: yesAngewandte Chemie, EarlyView.
We report a light‐driven primary active transport system based on an azobenzene carrier that drives uphill ion movement across phase‐separated compartments. Tunable ion‐pairing enables selective co‐transport under buffered conditions, advancing synthetic systems that emulate biological ion pumps.
Sani Yahaya   +3 more
wiley   +2 more sources

RANDOM WALKS AND FRACTAL STRUCTURES IN AGRICULTURAL COMMODITY FUTURES PRICES [PDF]

open access: yes
This paper investigates whether the assumption of Brownian motion often used to describe commodity price movements is satisfied. Using historical data from 17 commodity futures contracts specific tests of fractional and ordinary Brownian motion are ...
Turvey, Calum G.
core   +1 more source

Nanoscopic Mapping of the Extracellular Space in Amyloid Plaque‐rich Cortex

open access: yesAdvanced Science, EarlyView.
The extracellular space and diffusion around amyloid plaques are examined using shadow imaging and single‐particle tracking. Increased diffusivity is found near plaques, extracellular matrix alterations, and plaque core penetrability that varies with amyloid phenotype.
Juan Estaún‐Panzano   +11 more
wiley   +1 more source

Bimonotone Brownian Motion

open access: yes, 2017
We define bi-monotone independence, prove a bi-monotone central limit theorem and use it to study the distribution of bi-monotone Brownian motion, which is defined as the two-dimensional operator process with monotone and antimonotone Brownian motion as ...
Gerhold, Malte
core  

Home - About - Disclaimer - Privacy