Results 71 to 80 of about 107,678 (293)

Wall losses in straight ducts with non-circular cross sections: a scaling rule of identical losses for wooden flue organ pipes

Acta Acustica
Viscothermal effects at the walls are the dominant sources of loss in the air columns of various types of wind instruments. The classical theory of viscous and thermal boundary layers gives an analytical result that allows for computing the wall losses ...
Rucz Péter, Fontestad Elena Esteve, Angster Judit, Miklós András   +3 more
doaj   +1 more source

The Environmental Potential of Phase Change Materials in Building Applications. A Multiple Case Investigation Based on Life Cycle Assessment and Building Simulation

Energies, 2020
New materials and technologies have become the main drivers for reducing energy demand in the building sector in recent years. Energy efficiency can be reached by utilization of materials with thermal storage potential; among them, phase change materials
Roberta Di Bari, Rafael Horn, Björn Nienborg, Felix Klinker, Esther Kieseritzky, Felix Pawelz   +5 more
doaj   +1 more source

Advice on standards for school premises: for local authorities, proprietors, school leaders, school staff and governing bodies [PDF]

, 2013
There are fewer regulations than previously and they are less prescriptive, allowing schools more flexibility in how they use their premises. - Many regulations state that provision must be ‘suitable’.

core  

High‐Throughput Exfoliation of Optoelectronic‐Grade MoS2 via Turbulent‐Flow Wet Jet Milling

Advanced Functional Materials, EarlyView.
A scalable wet jet milling exfoliation method is demonstrated for producing optoelectronic‐grade MoS2 nanosheets using environmentally friendly ethyl cellulose in ethanol dispersion media. Guided by fluid dynamics modeling, this approach is optimized to achieve record‐high exfoliation throughput and concentration.
Maryam Khalaj, Shreyash S. Hadke, Lindsay E. Chaney, Janan Hui, Thomas Birge, Linda Li, Vinod K. Sangwan, Mark C. Hersam   +7 more
wiley   +1 more source

Measurement of noise events in road traffic streams: initial results from a simulation study [PDF]

, 2016
A key question for road traffic noise management is whether prediction of human response to noise, including sleep quality, could be improved over the use of conventional energy equivalent, or percentile, measures, by accounting for noise events in road ...
Brown, Lex, De Coensel, Bert, McBroom, James   +2 more
core  

Multilingual Speech Recognition With A Single End-To-End Model

, 2018
Training a conventional automatic speech recognition (ASR) system to support multiple languages is challenging because the sub-word unit, lexicon and word inventories are typically language specific.
Li, Bo, Moreno, Pedro, Rao, Kanishka, Sainath, Tara N., Toshniwal, Shubham, Weinstein, Eugene, Weiss, Ron J.   +6 more
core   +1 more source

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

Advanced 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, Xiao Yang, Xiao‐Lei Shi, Chengyun Xu, Xi Ling, Pengyu Zhang, Jinfeng Dong, Yong Du, Haisheng Chen, Ting Zhang, Zhi‐Gang Chen   +10 more
wiley   +1 more source

Thermal and acoustic environmental requirements for green buildings in Malaysia [PDF]

Journal of Design and the Built Environment, 2012
Passive design concepts as a strategy for achieving energy efficiency as well as optimum indoor thermal comfort in workspaces are being increasingly applied with the increased awareness of Green Buildings.
Sreenivasaiah Purushothama Rao, Asrul Mahjuddin Ressang Aminuddin, Hong Wan Thing, Nurul Amira Abd Jalil, Nazli Bin Che Din, Nila Inangda Manyam Keumala Daud   +5 more
doaj  

Wind turbine acoustics [PDF]

Available information on the physical characteristics of the noise generated by wind turbines is summarized, with example sound pressure time histories, narrow- and broadband frequency spectra, and noise radiation patterns. Reviewed are noise measurement
Hubbard, Harvey H., Shepherd, Kevin P.
core   +1 more source

A Non‐Reciprocal Architected Porous Medium

Advanced Functional Materials, EarlyView.
ABSTRACT In several fluid flow, energy‐dumping, and energy‐harvesting applications, a dominant flow direction or dominant resistance direction is desirable. In this study, we propose a simple modular geometry that doubles flow resistance in one direction relative to the opposite direction, while maintaining laminar viscous flow.
Clément Vezies, Pablo Zavattieri, Nicolás Silin   +2 more
wiley   +1 more source