Results 61 to 70 of about 70,174 (264)

Soundproofing panel with a maximum soundproofing ability [PDF]

Инженерно-строительный журнал, 2010
The aim of our development is increasing the sound insulation abilities to maximum possible value. Soundproofing panel with a maximum soundproofing ability, protected by patent to Russia, pertains to technical protection facility against noise spreading ...
V.E. Abrakitov
doaj  

Security Performance Optimization of IRS-assisted Wireless Sensing Systems [PDF]

Zhengzhou Daxue xuebao. Gongxue ban
To address the sensing security issue of unauthorized radar station (URS) stealing target information in multi-radar scenarios, a secure wireless sensing system model based on intelligent reflecting surface (IRS) assistance was proposed.
SUN Gangcan, ZHAO Xinrui, HAO Wanming, PENG Shumin   +3 more
doaj   +1 more source

Noise measurements on machinery near a reflecting plane [PDF]

The Journal of the Acoustical Society of America, 1989
Noise test specifications for large equipment often requires that the measurements be made with the equipment out-of-doors resting on the ground (usually a smooth, paved surface), and with the sound level meter microphone positioned between 1 and 2 m above the ground.
J. B. Moreland, F. S. McKendree
openaire   +1 more source

Giant Magnetic Coercivity Driven by Spin‐Bag Ferromagnetism in Epitaxial Sr3YCo4O10+δ Films with Engineered 2D Oxygen Vacancy Ordering

Advanced Functional Materials, EarlyView.
A giant magnetic coercivity and a vertical shift of hysteresis loops are demonstrated in Sr3YCo4O10+δ epitaxial films. The hard magnetic behavior originates from ferromagnetic spin bags stabilized within a long‐range ordered oxygen‐vacancy structure.
Yanbin Chen, Roger Guzman, Xiaomin Jia, Jialu Wu, Xing Xu, Li Sun, Jinbo Pan, Shixuan Du, Myung‐Hwan Whangbo, Wu Zhou, Jing Ma, Ce‐wen Nan, Chonglin Chen   +12 more
wiley   +1 more source

Retrieval of reflections from seismic background‐noise measurements

Geophysical Research Letters, 2007
The retrieval of the earth's reflection response from cross‐correlations of seismic noise recordings can provide valuable information, which may otherwise not be available due to limited spatial distribution of seismic sources. We cross‐correlated ten hours of seismic background‐noise data acquired in a desert area.
Draganov, D.S. (author), Wapenaar, K. (author), Mulder, W. (author), Singer, J. (author), Verdel, A. (author)   +4 more
openaire   +3 more sources

Optical Signature of Moiré Superlattices Formed by Twisted SrTiO3 Membranes

Advanced Functional Materials, EarlyView.
We discover optical signatures from bonded interfaces in twisted SrTiO3 moiré superlattices, including low‐frequency Raman vibrational modes and strong second‐harmonic generation, consistent with strong interlayer coupling inferred from cross‐sectional electron microscopy and ab initio calculations. ABSTRACT Moiré superlattices formed at the interfaces
T. A. M. Ragib Shahriar, Fumikazu Murakami, Xing He, Konnor Koons, Xinyan Li, Bumseop Kim, Shihan Qin, Varun Harbola, Jochen Mannhart, Yimo Han, Ruijuan Xu, Shengxi Huang, Andrew M. Rappe, Hanyu Zhu   +13 more
wiley   +1 more source

Predicted signatures of topological superconductivity and parafermion zero modes in fractional quantum Hall edges

Physical Review Research, 2020
Parafermion zero modes are exotic emergent excitations that can be considered as Z_{n} generalizations of Majorana fermions. Present in fractional quantum Hall-superconductor hybrid systems, among others, they can serve as potential building blocks in ...
Noam Schiller, Eyal Cornfeld, Erez Berg, Yuval Oreg   +3 more
doaj   +1 more source

From Photoalignment to Structured Light: Liquid Crystal Platforms for Beam Shaping and Complex Wavefronts

Advanced Functional Materials, EarlyView.
Photoaligned and photopatterned liquid crystal platforms provide programmable control of optical phase, polarization, and spin‐orbit interactions, enabling compact generation of structured light and complex wavefronts. This review highlights how tailored molecular orientations transform simple beams into designed optical fields, opening versatile ...
Le Zhou, Tingjun Zhong, Sijie Liu, Pouya Nosratkhah, Ke Xu, Yuzhen Zhao, Kristiaan Neyts   +6 more
wiley   +1 more source

Accelerated Correction of Reflection Artifacts by Deep Neural Networks in Photo-Acoustic Tomography

Applied Sciences, 2019
Photo-Acoustic Tomography (PAT) is an emerging non-invasive hybrid modality driven by a constant yearning for superior imaging performance. The image quality, however, hinges on the acoustic reflection, which may compromise the diagnostic performance. To
Hongming Shan, Ge Wang, Yang Yang
doaj   +1 more source

Semiconducting Polymers Post‐Functionalized With Ureido‐Pyrimidinone for Robust Stretchable Transistors

Advanced Functional Materials, EarlyView.
The design of intrinsically robust stretchable semiconducting polymers was achieved through OTBS‐mediated post‐functionalization of PDPP2T side chains with UPy units, generating dual hydrogen‐bonding motifs comprising weaker urethane linkages and strong quadruple UPy interactions along the long alkyl side chain, which is crucial for achieving desirable
Dinda Bazliah, Livy Laysandra, Kosuke Terayama, Xingyu Yang, Atsushi Isobe, Tai‐Chin Chiang, Tsuyoshi Michinobu, Yu‐Cheng Chiu   +7 more
wiley   +1 more source