Results 21 to 30 of about 9,528,627 (250)

Levels of selected heavy metals in blood and urine of workers of Alkali Kongo Plaza GSM Market within Lafia Metropolis, Nasarawa State, Nigeria

open access: yesEnvironmental Challenges, 2022
The health risk assessment of selected heavy metals in the blood and urine of workers, as well as the sound and air qualities of Alkali Kongo Plaza GSM Village in Lafia Metropolis, Nasarawa State, was conducted.
Muhammed B. Etsuyankpa   +5 more
doaj   +1 more source

Illustrations and supporting texts for sound standing waves of air columns in pipes in introductory physics textbooks

open access: yesPhysical Review Special Topics. Physics Education Research, 2014
In our pilot studies, we found that many introductory physics textbook illustrations with supporting text for sound standing waves of air columns in open-open, open-closed, and closed-closed pipes inhibit student understanding of sound standing wave ...
Liang Zeng   +5 more
doaj   +1 more source

Associated Students of the University of Puget Sound (ASUPS) Senate Minutes 2020-2021 [PDF]

open access: yes, 2020
Meeting minutes of the Associated Students of the University of Puget Sound from 09/2020 - 05/2021.
Associated Students of the University of Puget Sound (ASUPS)
core  

Improvement of Sound-Absorbing Dips in Nonwoven Fabric Sheet with Back Air Space: Division of Back Air Space by Additional Nonwoven Fabric Sheet

open access: yesAcoustics
This study was conducted to improve the sound absorption dips in nonwoven fabric sheets with a back air space. Considering the particle velocity distribution in the back air space, another nonwoven sheet was added to divide the air space into layers. The
Shuichi Sakamoto   +5 more
doaj   +1 more source

Associated Students of the University of Puget Sound Senate Minutes 1991-1992 [PDF]

open access: yes, 1991
Meeting minutes of the Associated Students of the University of Puget Sound from 09/1991 - 04/1992.
Associated Students of the University of Puget Sound,
core  

Adaptive Foam 3D Printing of Ultralight and Multifunctional Materials

open access: yesAdvanced Engineering Materials, EarlyView.
Adaptive foam 3D printing, enabled by expandable microspheres, imparts cellular structures to thermoplastic and thermosetting polymers, manufactured through a variety of processes including fused filament fabrication, direct ink writing, digital light processing, and inkjet printing.
Nariman Rajabifar, Amir Ameli
wiley   +1 more source

Cicada Wing-Inspired Skeleton-GO Networks in Melamine Foams for Multifunctional High-Performance Composites. [PDF]

open access: yesAdv Sci (Weinh)
Inspired by the intricate microstructure of cicada wings, researchers developed a novel in situ skeleton‐graphene membrane architecture within lightweight foams. This bioinspired design dramatically enhances multifunctional performance: vibration attenuation time decreases by ∼83.3%, damping capacity increases by ∼179.3%, and compressive modulus rises ...
Feng J   +6 more
europepmc   +2 more sources

Associated Students of the University of Puget Sound Senate Minutes 2007-2008 [PDF]

open access: yes, 2007
Meeting minutes of the Associated Students of the University of Puget Sound from 09/2007 - 04/2008.
Associated Students of the University of Puget Sound (ASUPS)
core  

Cryogenic Deformation Behavior of TiAl and Insights Into Embrittlement After High‐Temperature Exposure Combined With Secondary Ion Mass Spectroscopy of Near Surface Chemistry

open access: yesAdvanced Engineering Materials, EarlyView.
Near‐surface deuterium enrichment profiles for different microstructural types of TiAl after exposure at 700 °C in a heavy water‐containing environment. The deuterium levels are significantly higher than expected from natural occurrence, indicating that the heavy water dissociated during the exposure treatment and entered the specimens.
Jonathan D. H. Paul   +5 more
wiley   +1 more source

Noise impact evaluations of an outdoor air filter tower in urban blocks

open access: yesFrontiers in Environmental Science, 2023
Although air filter towers are commonly used to improve air quality in urban areas, their operation often produces significant noise levels, and their noise impact is unknown.
Huading Lou   +3 more
doaj   +1 more source

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