Zobrazeno 1 - 10
of 56
pro vyhledávání: '"Zhong Hua Shen"'
Multi-mode laser-ultrasound imaging using Time-domain Synthetic Aperture Focusing Technique (T-SAFT)
Publikováno v:
Photoacoustics, Vol 27, Iss , Pp 100370- (2022)
The Synthetic Aperture Focusing Technique (SAFT) is an imaging algorithm used in laser ultrasonics (LU) to visualise the appearance of defects. However, ultrasound excited by a pulsed laser has the characteristics of wide bandwidth and multi-mode dir
Externí odkaz:
https://doaj.org/article/c885ce2b018a48b59b23378b9085aae9
Autor:
Zhong-Hua Shen, Yu-Ming Chu, Muhammad Altaf Khan, Shabbir Muhammad, Omar A. Al-Hartomy, M. Higazy
Publikováno v:
Results in Physics, Vol 31, Iss , Pp 105028- (2021)
We are considering a new COVID-19 model with an optimal control analysis when vaccination is present. Firstly, we formulate the vaccine-free model and present the associated mathematical results involved. Stability results for R0
Externí odkaz:
https://doaj.org/article/f766431698cc4766b5e543c28ceee0f9
Publikováno v:
Photoacoustics, Vol 22, Iss , Pp 100248- (2021)
The Laser Ultrasonic (LU) technique has been widely studied. Detected ultrasonic signals can be further processed using Synthetic Aperture Focusing Techniques (SAFTs), to detect and image internal defects. LU-based SAFT in frequency-domain (F-SAFT) i
Externí odkaz:
https://doaj.org/article/cb21aadaa59241a59932351c3f6bc328
Publikováno v:
Ultrasonics. 131:106932
Autor:
Li-Jing Min, Zhong-Hua Shen, Joanna Bajsa-Hirschel, Charles L. Cantrell, Liang Han, Xue-Wen Hua, Xing-Hai Liu, Stephen O. Duke
Publikováno v:
Pesticide biochemistry and physiology. 188
A new series of cyclopropane-1,1-dicarboxylic (CPD) acid analogues were designed and synthesized. CPD is an inhibitor of ketol-acid reductoisomerase (KARI), an enzyme of the branched chain amino acid pathway in plants. The structures of CPD analogues
Publikováno v:
Journal of Mathematical Inequalities. :1-21
Publikováno v:
Optics & Laser Technology. 156:108485
Publikováno v:
Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A. Matemáticas. 115
In this paper, we present sharp power mean bounds for the so-called lemniscate type means, which were introduced by Neuman (Math Pannon 18(1):77–94, 2007). The obtained results measure what the distance is between the lemniscate-type means and powe
Publikováno v:
Optics Letters. 47:3736
The traditional optical detection method has a limitation in detecting closed cracks in optical elements. In this Letter, a novel, to the best of our knowledge, method has been developed for the detection of closed cracks in transparent samples. Firs
Autor:
Wei-Mao Qian, Zhong-Hua Shen
Publikováno v:
Journal of Applied Mathematics, Vol 2012 (2012)
We prove that αH(a,b)+(1−α)L(a,b)>M(1−4α)/3(a,b) for α∈(0,1) and all a,b>0 with a≠b if and only if α∈[1/4,1) and αH(a,b)+(1−α)L(a,b)
Externí odkaz:
https://doaj.org/article/4cdd6d18126f42d79fcb40c4ae1582f6