Results 41 to 50 of about 2,196 (210)

An experimental effort to improve the Nimbus high resolution infrared radiometer Final report, 1 May 1964 - 15 Feb. 1965 [PDF]

open access: yes
Electronics modifications and improved detector cooling for Nimbus high resolution infrared ...
Annable, R. V.   +3 more
core   +1 more source

Effects of low-frequency whole-body vibration on motor-evoked potentials in healthy men. [PDF]

open access: yes, 2013
addresses: Sport and Exercise Science Research Centre, Faculty of Engineering, Science and The Built Environment, London South Bank University, 103 Borough Road, London SE1 0AA, UK. milevakn@lsbu.ac.ukThis is the author's post-print version of an article
Abercromby   +47 more
core   +1 more source

Rate‐Adaptive Site Transformation Catalyst for Parallel Water Dissociation and Hydrogen Adsorption in Alkaline Hydrogen Evolution

open access: yesAdvanced Functional Materials, EarlyView.
This work presents a rate‐adaptive site transformation strategy in Ag‑ethylenediamine intercalated Co9S8, which not only enables parallel water dissociation and H* adsorption, but also allows the catalyst to provide more active sites under high demand, removing a major bottleneck. The catalyst achieves a record current density of 4.2 A cm−2@2.0 V, with
Yongqi Ye   +3 more
wiley   +1 more source

Patterns in the Sand: Mathematical Exploration of Chladni Patterns [PDF]

open access: yes, 2000
Chladni Patterns are formed when sand settles at the nodes of two dimensional standing waves, excited on a metallic plate which is driven at a resonant frequency.
Coughlin, A. M.
core   +1 more source

The effects of packing structure on the effective thermal conductivity of granular media: A grain scale investigation

open access: yes, 2018
Structural characteristics are considered to be the dominant factors in determining the effective properties of granular media, particularly in the scope of transport phenomena.
Dai, Weijing   +2 more
core   +3 more sources

Balancing Electrons to Break the Activity‐Selectivity Trade‐Off in H2O2 Electrosynthesis

open access: yesAdvanced Functional Materials, EarlyView.
Carrier‐concentration balancing in CuS is achieved by coupling cobalt dopants with cobalt vacancies, converting CuS from p‐ to n‐type to accelerate 2e− ORR while withdrawing excess carriers to optimize *OOH binding for H2O2 desorption. The catalyst reaches 8.14 mol g−1 h−1 with >84% selectivity in 1.0 M KOH and drives robust electro‐Fenton dye ...
Hangning Liu   +11 more
wiley   +1 more source

Linear oscillations of axisymmetric viscous liquid bridges [PDF]

open access: yes, 2000
Small amplitude free oscillations of axisymmetric capillary bridges are considered for varying values of the capillary Reynolds number C-1 and the slenderness of the bridge Λ .
Nicolás, José A.   +1 more
core   +2 more sources

3D‐Printed Hygroscopic Polymer Networks for High‐Humidity Triboelectric Nanogenerators to Wirelessly Power Implantable Electronic Devices‐ A Conceptual Pathway

open access: yesAdvanced Functional Materials, EarlyView.
This work develops 3D‐printable tribopolymer networks that can enhance triboelectric performance under high humidity environments. Polar hydrophilic functional groups and incorporation of zwitterionic monomers promote bound‐water–dominated interfacial polarization thereby increasing electrical outputs.
Linguangze Zhuo   +8 more
wiley   +1 more source

Order by disorder: saving collective motion from topological defects in a conservative model

open access: yes, 2019
Using analytic and numerical methods, we study a $2d$ Hamiltonian model of interacting particles carrying ferro-magnetically coupled continuous spins which are also locally coupled to their own velocities.
Casiulis, Mathias   +3 more
core   +3 more sources

Unlocking Multi‐Valley Energy Pockets and Interface‐Induced Phonon Filtering in InSb Thermoelectrics by Reaction‐Driven Interface Engineering

open access: yesAdvanced Functional Materials, EarlyView.
InSb, a narrow‐bandgap semiconductor with high carrier mobility, is promising for thermoelectric energy conversion but suffers from high lattice thermal conductivity and strong bipolar conduction. Here, in situ interface engineering using Co2O3 nanoprecursors forms hierarchical CoSbx/In2O3/CoSb3 heterostructures that enhance phonon scattering and ...
Jiwu Xin   +10 more
wiley   +1 more source

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