Results 61 to 70 of about 1,091,983 (300)

Effect of Diffusing Elements in a Reverberation Room on the Results of Airborne Sound Insulation Laboratory Measurements

Archives of Acoustics, 2019
The main problem in the measurement of airborne sound insulation is the measurement of the sound power radiated by the barrier, in practice performed by measuring the sound pressure level and the acoustic absorption in the receiving room.
Dominik MLECZKO, Tadeusz WSZOŁEK
doaj   +1 more source

Sn‐Driven Grain Boundary Elimination for Single‐Crystalline Ni‐Rich Cathodes with Superior High‐Voltage Stability in Lithium‐Ion Batteries

Advanced Science, EarlyView.
A low‐temperature synthesis method of single‐crystalline NCA was successfully achieved by Sn doping, employing the same synthetic conditions as its polycrystalline counterparts. This synthesis was conducted at a temperature that was 150 °C lower than that required for synthesizing single‐crystalline NCA without Sn doping.
Guomeng Xie, Delai Qian, Ruiwu Li, Terence Xiaoteng Liu, Shun Lu   +4 more
wiley   +1 more source

Improving Sound Insulation in Low Frequencies by a Three-Component Cladding Acoustic Metamaterial Panel

Archives of Acoustics
In this paper, a three-component cladding acoustic metamaterial panel with good sound insulation effect in the low-frequency range is proposed. The sound transmission loss of metamaterial panels under different structural configurations and different ...
Na TAN, Xiaowei YAN, Bingfei LIU
doaj   +1 more source

Retrospective Grid Cells in the Medial Entorhinal Cortex Encode Past Paths During Spatial Navigation

Advanced Science, EarlyView.
Retrospective grid cells are identified in the medial entorhinal cortex, with spatial firing patterns that become most grid‐like when activity is projected onto recently traversed locations. Their coding loses spatial precision in darkness and is disrupted during assisted movement, indicating that entorhinal representations incorporate recent path ...
Ruojin Liu, Xin Yuan, Zilong He, Hong Jin, Jiayi Tian, Cong Chen, Yuanjing Liu, Xiang Zhang, Shidan Wen, Emilio Kropff, Chenglin Miao   +10 more
wiley   +1 more source

The Influence of Rosin, Blowing Agent, and Mould Type on the Sound Insulation of Paper-based Foams

BioResources, 2022
Wooden foams have been extensively researched in recent years because of their special structure and green features. At the same time, noise pollution is increasing, prompting sound insulation to become another research focus.
Haoyuan Li, Lin Luo, Jiantong Qiao, Xinyu Li, Jiahe Tu, Qingchun Wang, Zhongjia Chen   +6 more
doaj   +2 more sources

An Airborne and Impact Sound Insulation Analysis of 3D Woven Textiles on the Floor in Buildings

Buildings
Noise has detrimental effects on mental and physical health and quality of life, especially for those living in apartment buildings. Therefore, sound insulation materials are pivotal for reducing unwanted noise as well as enhancing acoustic comfort. This
Ngan Thanh Vu, Won-Kee Hong, Seong-Kyum Kim   +2 more
doaj   +1 more source

Freestanding PZT Films for Integrated Wearable Sensing and Intelligent Acoustic Recognition

Advanced Science, EarlyView.
A freestanding epitaxial PZT/LaNiO3/Pt heterostructure is achieved via water‐assisted delamination from mica, effectively eliminating substrate‐induced clamping and releasing intrinsic ferroelectricity. The released film exhibits substantially enhanced remanent polarization and piezoelectric response, delivering excellent mechanical flexibility and ...
Hailong Pan, Zhichao Xu, Rongxiao Liu, Jianmei Pei, Changhong Yang, Shifeng Huang, Michael Wübbenhorst   +6 more
wiley   +1 more source

Evaluation of the influence of ventilation holes on the facades sound insulation

, 2016
In this study the influence of the small elements, like ventilation holes or air exchange units, on façade sound insulation is evaluated. Experimental data of sound insulation, carried out from laboratory and field measurements, are compared for ...
Di Bella A., MASTINO, COSTANTINO CARLO, BACCOLI, ROBERTO, Marini M   +3 more
core   +1 more source

A Compact and Fast Single‐Spike TTFS Encoder With Ultralow Operating Voltage for Efficient Neuromorphic Fourier Transform

Advanced Science, EarlyView.
A Pt/TaOx/V single‐spike TTFS encoder achieves ultralow‐voltage (∼0.35 V), high‐speed (∼100 ns) operation with simplified circuitry. Integrating bipolar nonuniform temporal encoding with a spiking‐DFT neuron model enables a neuromorphic FFT framework. Device‐calibrated simulations demonstrate high spectral fidelity across multitone, speech, and chirp ...
Yang Wu, Qi Wei, Junfeng Zhang, Lirou Su, Ning Mao, Beibei Huang, Jiaying Chen, Dian Huang, Shengzhong Feng, Yishu Zhang, Shuai Zhong   +10 more
wiley   +1 more source

Features of sound classification scheme designated to label buildings in Lithuania

Journal of Civil Engineering and Management, 2017
In Lithuania’s case, the legal requirements for the building acoustic quality since the year 2004 has been ex­pressed through the sound classification scheme (SCS).
Aleksandras Jagniatinskis, Boris Fiks, Marius Mickaitis, Ritoldas Šukys   +3 more
doaj   +1 more source