Results 81 to 90 of about 18,354 (310)

Heat Flow In An Infinite Region Bounded Internally By A Circular Cylinder With Forced Convection At The Surface [PDF]

open access: bronze, 1966
John J. Jaeger   +26 more
openalex   +1 more source

Sleep Alters the Velocity of Physiological Brain Pulsations in Humans

open access: yesAdvanced Science, EarlyView.
Sleep alters I/CSF oscillatory flow, driven by increased respiratory (29%) and vasomotor pulsation (21%) velocities, while cardiovascular pulsations decreased by (22%). Velocity is quantified using optical flow analysis of MREG data. Spectral power increases alongside these pulsations (spatial correlation, r = 0.35 and r = 0.39, respectively ...
Ahmed Elabasy   +13 more
wiley   +1 more source

Bioinspired Twisted Artificial Muscles with Enhanced Performance for Underwater Applications

open access: yesAdvanced Science, EarlyView.
A climbing plant‐inspired twisted artificial muscle (TAM) with a braided configuration and seal‐inspired thermal insulation enables high‐performance underwater actuation. Enhanced deformation, reduced heat dissipation, and rapid motion are validated through a bionic ray that exhibits straight and turning motions.
Jin Sun   +6 more
wiley   +1 more source

Forced Convection in Asymmetric Wavy Channel

open access: yesJournal of Engineering and Sustainable Development, 2011
The effects of wavy wall in asymmetric two-dimensional channel on flow and heat transfer have investigated in this paper. The flow and temperature fields are studied numerically with different amplitude to channel length ratio and different number of ...
Ahmed Waheed Mustafa
doaj  

Analysis of forced convection in the HTTU experiment using numerical codes

open access: yesNuclear Engineering and Technology
The High Temperature Test Unit (HTTU) was an experimental set-up to conduct separate and integral effects tests of the Pebble Bed Modular Reactor (PBMR) core. The annular core consisted of a randomly packed bed of uniform spheres.
M.C. Potgieter, C.G. du Toit
doaj   +1 more source

MXene/Carboxymethyl Chitosan Moisture Responsive Soft Actuator with Diode‐Like Actuation for Versatile Applications Driven by Human Metabolism

open access: yesAdvanced Science, EarlyView.
A MXene‐based actuator with gradient thickness is fabricated by a novel and simple vacuum‐assisted “tilt‐filtration” approach. The actuator exhibits a “diode‐like” controllable unidirectional deformation behavior under moisture gradient, and its deformation direction is strictly correlated to its thickness gradient direction and moisture source ...
Liangliang Xu   +7 more
wiley   +1 more source

Experimental Study on the Impact of External Geometrical Shape on Free and Forced Convection Time Dependent Average Heat Transfer Coefficient during Cooling Process

open access: yesAl-Khawarizmi Engineering Journal, 2012
In this research, an experimental study was conducted to high light the impact of the exterior shape of a cylindrical body on the forced and free convection heat transfer coefficients when the body is hold in the entrance of an air duct.
Sundus Hussein Abd
doaj   +2 more sources

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