Results 51 to 60 of about 1,830,826 (251)

Finite difference methods for solving the transport equation in the problems of optical biomedical diagnostics

Journal of Biomedical Photonics & Engineering, 2017
The present paper is a retrospective review of the development of the approach to numerical modeling of radiation propagation in biological tissues, based on the use of finite difference methods for the solution of the radiative transfer equation (RTE ...
Leonid P. Bass, Olga V. Nikolaeva, Alexander V. Bykov, Mikhail Yu. Kirillin   +3 more
doaj   +1 more source

Enhanced Ultrasound Transmission Through Aberration Layers Using Space‐Coiling Acoustic Metamaterials

Advanced Engineering Materials, EarlyView.
Enhancing ultrasound transmission through an aberration layer exhibiting mismatched impedance with the surrounding medium possesses great implications in imaging and treatment. In this study, we show that a space‐coiling acoustic metamaterial with judiciously tailored structural profile can help improve impedance matching.
Maral Ghanami, Hengzhe Ren, Erqian Dong, Ashkan Ghanbarzadeh‐Dagheyan, Chen Shen   +4 more
wiley   +1 more source

Analysis of Specific absorption rate in the human head model exposed to radiofrequency radiation [PDF]

Kragujevac Journal of Science, 2023
As mobile phones have become a necessity in modern society, and there is an increasing number of users of various ages, it is imperative to investigate the impact of mobile phone radiofrequency electromagnetic radiation (RF) on humans.
Milošević Marko M., Cimbaljević Željko M., Živković Milena P., Stevanović Nenad D., Marković Vladimir M., Krstić Dragana Z.   +5 more
doaj  

Entropy‐Driven Design of Low‐Melting‐Point Alloys via Compositionally Complex Strategy

Advanced Engineering Materials, EarlyView.
Conventional low‐melting‐point alloys (LMPAs) are limited by a narrow compositional space and inherent property trade‐offs. This review presents an entropy‐driven design strategy that overcomes these limitations, ushering in a new class of low‐melting‐point compositionally complex alloys (LMCCAs).
Yinghui Shang, Jianxiang Zhao, Zhaoqi Chen, Hao Gong, Yinsen Yan, Junlei Tao, Yong Yang   +6 more
wiley   +1 more source

The glideslope axes radiation propagation paths atmospheric distortion for the ground controlled approach systems

Известия высших учебных заведений России: Радиоэлектроника, 2015
The glideslope axes radiation propagation paths distortion for the ground controlled approach systems is considered. The radiation propagation tracing analytical expressions are derived.
G. S. Nakhmanson, D. V. Buchnev, A. V. Suslin   +2 more
doaj  

Resonant propagation of laser radiation in the upper ionosphere [PDF]

E3S Web of Conferences, 2019
A brief review report is presented on materials for studying the resonant propagation of laser radiation in the ionosphere excited by precipitations of charged particles. The results of research and perspectives for the development of scientific area are
Shevtsov Boris, Bychkov Vasily, Perezhogin Andrey, Seredkin Ilya   +3 more
doaj   +1 more source

Controlling Grain Growth in Powder Bed Fusion of Yttria‐Stabilized Zirconia Using Femtosecond Lasers: Challenges and Methodological Insights

Advanced Engineering Materials, EarlyView.
Binder‐free laser powder bed fusion of 8YSZ with a femtosecond laser is used to map process windows linking scan strategy, heat accumulation, and grain growth. Time‐resolved thermography and simulations reveal thermal regimes that enable continuous, vitrified, and fine‐grained 8YSZ surface layers without absorptive additives and demonstrate ...
Markus Kühn, Sarah Kaden, Andrea Barz, Daniel Störzner, Jens Bliedtner, Andrés Fabián Lasagni   +5 more
wiley   +1 more source

Study of nonthermal continuum patches : wave propagation and plasmapause study [PDF]

, 2011
Nonthermal continuum (NTC) radiation is believed to be emitted at the plasmapause and near the magnetic equator. We present a particular type of NTC radiation, referred to as NTC patch, which appears over a wide frequency range and within a relatively ...
P. M. E. Décréau, Boardsen, Scott Arnold, Foullon, Claire, Vallières, Xavier, Grimald, S., El-Lemdani-Mazouz, F., Scott A. Boardsen, Boardsen, Scott A., El-Lemdani Mazouz, Farida, Decreau, P.M.E., Décréau, P. M. E., Grimald, Sandrine, Décréau, Pierrette, Xavier Vallières, F. El-Lemdani-Mazouz, Foullon, C. (Claire), Décréau, Pierrette M. E., S. Grimald, C. Foullon   +18 more
core   +1 more source

High‐Entropy Alloy Interlayers Toward Advanced Joining for High‐Performance Structural Applications: Current Progress and Emerging Challenges

Advanced Engineering Materials, EarlyView.
HEA interlayers offer a versatile route for joining high‐performance structural materials. Their compositional and structural design regulates interfacial reactions, suppresses brittle IMCs, and improves metallurgical bonding. Sandwich interlayers further integrate defect healing with precipitation strengthening, enabling improved strength–ductility ...
Lin Yuan, Jiafen Song, Jinglong Li, Jiangtao Xiong, Tao Yang   +4 more
wiley   +1 more source

Effect of Cu and CuP Additions on the Microstructure and Nanoindentation‐Based Fracture Behavior of CoNiAlSi Ferromagnetic Shape Memory Alloys

Advanced Engineering Materials, EarlyView.
Cu and combined Cu–P microalloying refine the microstructure and enhance the nanoindentation‐derived fracture resistance of CoNiAlSi ferromagnetic shape memory alloys without suppressing the martensitic transformation. Comparative SEM, DSC, and nanoindentation results reveal that the CuP‐containing alloy provides the most balanced response, achieving ...
Mehmet Demir
wiley   +1 more source