Results 81 to 90 of about 3,042,144 (290)

Computing Room Acoustics Using 3D FDTD: A Cuda Approach. [PDF]

open access: yes, 2011
In seeking to model realistic room acoustics, direct numerical simulation can be employed. This paper presents 3D Finite Difference Time Domain schemes that incorporate losses at boundaries and due to the viscosity of air.
Stefan Bilbao   +3 more
core   +1 more source

Bioinspired Adaptive Surfaces for Intelligent Liquid Manipulation: Progressing From Passive and Active to Hybrid Strategies

open access: yesAdvanced Materials, EarlyView.
This review examines passive, active, and hybrid liquid manipulation strategies, highlighting hybrid approaches as an emerging route to reconcile energy efficiency with adaptive control. By actively reconstructing passive surfaces to store programmable interfacial energy, hybrid systems enable flexible yet low‐power liquid transport, with perspectives ...
Jiaqi Miao   +3 more
wiley   +1 more source

Key building sites of Saint-Petersburg from the point of view of acoustics of buildings [PDF]

open access: yesИнженерно-строительный журнал, 2010
When constructing every building or erection it's important to take into consideration the acoustics of halls and noise in the rooms and observe the regulations.The article is devoted to the analysis of the observance of these regulations on first-rate ...
A.P. Zagorskaya
doaj  

Electrolyte Design for Fast‐Charging Lithium‐Based Batteries

open access: yesAdvanced Materials, EarlyView.
A decade of progress in fast‐charging electrolytes for lithium batteries is reviewed. Electrolyte design strategies spanning solvents, salts, additives, and advanced systems, such as localized high‐concentration electrolytes (LHCEs), are summarized. Advanced diagnostic tools for lithium plating and interphase chemistry are discussed, with perspectives ...
Chen Liu, Zehao Cui, Arumugam Manthiram
wiley   +1 more source

Acoustical properties of some modern partitioning glass walls systems – case study [PDF]

open access: yesConstructii: Journal of Civil Engineering Research, 2014
The case study presents the results of laboratory measurements carried out for the determination of airborne sound insulation properties for various modern partition glass walls systems.
Ioana-Mihaela ALEXE   +1 more
doaj  

Wearable Morphology‐Adaptive in‐Ear Device With Active Cleansing Capability for Multimodal Health Monitoring

open access: yesAdvanced Materials, EarlyView.
We present SCIENCE, an in‐ear multimodal physiological monitor featuring two key innovations. Water‐triggered morphological expansion (a 2‐mm cylinder to a 9‐mm spindle) achieves conformal adaptation across complex canal geometries. Simultaneously, active biofouling mitigation disrupts cerumen barriers, reducing sensor‐skin impedance by 20%.
Shuyun Zhuo   +3 more
wiley   +1 more source

Acoustics [PDF]

open access: yes, 2007
The acoustics environment in space operations is important to maintain at manageable levels so that the crewperson can remain safe, functional, effective, and reasonably comfortable.
Goodman, Jerry R., Grosveld, Ferdinand
core  

Breaking the Surface: Buoyant Metal–Polymer Open–Cell Hybrid Lattice Metamaterials

open access: yesAdvanced Materials, EarlyView.
Open‐cell metal–polymer lattice metamaterials that defy sinking. (a) Injection process of the polyurethane (PU) foam into the titanium (Ti‐6Al‐4V) hollow‐strut lattice creating the open‐cell Ti‐6Al‐4V+PU hybrid lattice, (b) flotation test of a hybrid lattice specimen, and (c) a digital representation and experimental validation of a marine buoy ...
Jordan Noronha   +7 more
wiley   +1 more source

Environmental sustainability potentials of gold recovery via membrane distillation in the production of printed circuit boards

open access: yesCleaner Environmental Systems
Material losses in hard-gold plating during rinsing are a costly aspect of printed circuit board (PCB) production and lead to environmental impacts from raw materials that do not end up in the final products. Previously, washing water containing gold was
Ehsan Nemati   +6 more
doaj   +1 more source

Inverse problems in musical acoustics

open access: yes, 2016
Inverse problems in musical acoustics have a long history. Essentially they involve deducing something about the structure of the instrument simply by examining its sound. Can you tell the metal from which a flute is made from its sound?
Fletcher, Neville H.
core  

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