Results 111 to 120 of about 1,129,305 (370)

Practical Guide to the Design of Granular Hydrogels for Customizing Complex Cellular Microenvironments

open access: yesAdvanced Healthcare Materials, EarlyView.
Granular hydrogels are emerging microporous platforms for cell culture and delivery, showing great potential for replicating the complex, heterogeneous environments found in natural tissues. This review outlines the design principles of granular hydrogels, highlighting critical factors that determine the final physicochemical properties of the entire ...
Shuhan Feng, Kaiyang Chen, Shiqi Wang
wiley   +1 more source

The Acoustic Impedance of a Vibrating Annular Piston Located on a Flat Rigid Baffle Around a Semi-Infinite Circular Rigid Cylinder

open access: yesArchives of Acoustics, 2013
The axisymmetric problem of acoustic impedance of a vibrating annular piston embedded into a flat rigid baffle concentrically around a semi-infinite rigid cylindrical circular baffle has been undertaken in this study.
Wojciech P. RDZANEK   +2 more
doaj  

Behaviour of acoustic waves in a duct with Helmholtz resonator in presence of a temperature gradient [PDF]

open access: yes, 2014
Understanding the behaviour of one-dimensional acoustical wave propagation in ducts is very important for controlling combustion instabilities in propulsion, household burners, gas turbine combustors, and designing engineering mufflers.
Haydar , Aygun
core   +1 more source

Seeing inside the Body Using Wearable Sensing and Imaging Technologies

open access: yesAdvanced Healthcare Materials, EarlyView.
This review explores wearable technologies for noninvasive internal health monitoring. It categorizes approaches into indirect sensing (e.g., bioelectrical and biochemical signals) and direct imaging (e.g., wearable ultrasound and EIT), highlighting multimodal integration and system‐level innovation toward personalized, continuous healthcare.
Sumin Kim   +3 more
wiley   +1 more source

Model Based Inversion of Acoustic Impedance from Seismic Trace for Lithofacies Differentiation: an Application in Xy Field Offshore Niger Delta

open access: yesJournal of Applied Sciences and Environmental Management, 2019
This study presents the result of a Model-based seismic inversion technique which was used to invert an acoustic impedance structure within a reservoir interval by intergrating well logs and 3D post stack seismic data obtained from XY field offshore ...
S. Eze   +3 more
doaj   +1 more source

Metallic multilayers for X-band Bragg reflector applications [PDF]

open access: yes, 2016
We present a structural and high frequency (8.72GHz) electrical characterization of sputter deposited Ti/W, Ti/Ru and Mo/Ti metallic multilayers for potential application as acoustic Bragg reflectors.
Adabi, M   +5 more
core  

Advancing from MOFs and COFs to Functional Macroscopic Porous Constructs

open access: yesAdvanced Materials, EarlyView.
This review study investigates the recent progress and methodologies for manufacturing metal–organic framework (MOF) or covalent–organic framework (COF)‐based 3D structured macroscopic porous constructs with high structural integrity, providing the possibility to control their porosity across dimensions.
Seyyed Alireza Hashemi   +8 more
wiley   +1 more source

On impedance conditions for circular multiperforated acoustic liners

open access: yesJournal of Mathematics in Industry, 2018
Background The acoustic damping in gas turbines and aero-engines relies to a great extent on acoustic liners that consists of a cavity and a perforated face sheet.
Kersten Schmidt   +3 more
doaj   +1 more source

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