Results 91 to 100 of about 2,715,434 (394)

Design and Compare Sound Absorption Coefficient Nanocomposites Containing Tea Waste and Polypropylene With and Without Nanoclay

بهداشت و ایمنی کار, 2021
Introduction: In recent years tend to use of natural fibers has increased in making sound absorbers. Fiber-based natural materials have low density, low production costs, and are biodegradable.
Reza Jafari Nodoushan, Mostafa Azimzadeh, Sahar Bagheri, Arefeh Dehghani Tafti   +3 more
doaj  

Borate‐Water‐Based 3D‐Slime Interface Quasi‐Solid Electrolytes for Li‐ion Batteries

Advanced Materials, EarlyView.
This advanced material, composed of lithium borate, lithium salt, and water, is a quasi‐solid that can be handled in air and has a 3D‐conducting‐interface network (3D‐Slime‐Interface Quasi‐Solid Electrolytes: 3D‐SLISE). The 3D‐SLISE is nonflammable and can be used in lithium‐ion batteries, and its water solubility allows direct recycling of active ...
Yosuke Shiratori, Kenta Watanabe, Kengo Saito, Ryota Sato, Yukihiro Okuno, Shintaro Yasui   +5 more
wiley   +1 more source

Influences of Compression Ratios on Sound Absorption Performance of Porous Nickel–Iron Alloy

Metals, 2018
The improvement of sound absorption performance of porous metal is a focus of research in the field of noise reduction. Influences of compression ratios on sound absorption performance of a porous nickel–iron (Ni–Fe) alloy were investigated.
Panfeng Bai, Xinmin Shen, Xiaonan Zhang, Xiaocui Yang, Qin Yin, Anxin Liu   +5 more
doaj   +1 more source

A microscopic description of sound absorption in the atmosphere [PDF]

The various mechanisms which contribute to sound absorption in the atmosphere are identified and a technique for computing the contribution from each is presented.
Bass, H. E.
core   +1 more source

PENGARUH FRAKSI BERAT SERAT TERHADAP SIFAT AKUSTIK KOMPOSIT rHDPE-CANTULA [PDF]

, 2016
In this study, composites made from recycled HDPE and Cantula fiber have been done and the absorption coefficient have been measured. Composites rHDPE-Cantula were made using hot press for approximately 60 minutes with 170oC temperature while pressure ...
H, M. TAUFIK BURHANY.
core  

Ultrasonic waves in classical gases

, 2017
The velocity and absorption coefficient for the plane sound waves in a classical gas are obtained by solving the Boltzmann kinetic equation, which describes the reaction of the single-particle distribution function to a periodic external field.
Gorenstein, M. I., Grygoriev, U. V., Magner, A. G.   +2 more
core   +1 more source

The Future of MXene Fibers

Advanced Materials, EarlyView.
This perspective explores the diverse applications of MXene fibers, including those often overlooked in fiber‐focused studies. It emphasizes the critical need to address challenges in synthesis, scalability, and long‐term stability to unlock their full potential in real‐world applications. Abstract Since the first report on MXene‐coated fibers in 2017,
Ken Aldren S. Usman, Jizhen Zhang, Lingyi Bi, Shayan Seyedin, Xungai Wang, Yury Gogotsi, Joselito M. Razal   +6 more
wiley   +1 more source

Improved sound absorption with 3D-printed micro-perforated sandwich structures

Journal of Materials Research and Technology
The micro-perforated sandwich structure based on triply periodic minimal surfaces (TPMS) is a lightweight, high-strength and multi-functional structure, which integrates heat exchange, impact resistance, energy absorption, etc., and has been widely used ...
Peng-Fei Zhang, Zhong-Hua Li, Yu-Jun Zhou, Qi-Fei Zhang, Bin Liu, Fei Liu, Si-Chen Pei, Ke Shi, Pei-kang Bai   +8 more
doaj  

Study on the sound absorption characteristics and noise reduction mechanism of coconut-shell-activated carbon particles and coconut fiber composite biomass sound-absorption materials

Materials Research Express
Sound-absorbing materials are widely used in the field of automotive industry. Biomass materials are abundant in the nature, some of which have natural sound absorption and noise reduction properties.
Zhenhua Hou, Xiaoying Ma, Liai Pan, Rui Zhang, Libo Wang   +4 more
doaj   +1 more source

Quantitative Photoacoustic Imaging in the Acoustic Regime using SPIM

, 2017
While in standard photoacoustic imaging the propagation of sound waves is modeled by the standard wave equation, our approach is based on a generalized wave equation with variable sound speed and material density, respectively.
Beigl, Alexander, Elbau, Peter, Sadiq, Kamran, Scherzer, Otmar   +3 more
core   +1 more source