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Binary Phase Shaping and SHG Contrast Ratios

Journal of Applied Mathematics and Physics 2024年第8期12卷 3026-3035页

作者： tingyao xiong Department of Mathematics and Statistics Radford University Radford USA

Finding binary sequences with Large SHG ratios is very important in the field of ultrafast science, biomedical optics, high-resolution microscopy and label-free imaging. In this paper, we have demonstrated the relation between the SHG contrast ratio and the traditional Merit Factor values. And in the light from known results in Merit Factor Problems, we have shown that Legendre Sequences or Jacobi Sequences, are still the best candidates to obtain binary sequences with large SHG contrast ratios. The authors also discussed the SHG behaviors on some sequences obtained from cyclotomic classes over the finite field GF (2l) .

关键词： Binary Phase Shaping Binary Sequences SHG Contrast Ratio Merit Factor

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Activation of peroxymonosulfate by FeVO_(3-x)for the degradation of carbamazepine:Vanadium mediated electron shuttle and oxygen vacancy modulated interface chemistry

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Chinese Chemical Letters 2024年第1期35卷 435-440页

作者： Leiduo Lai Hongyu Zhou Yichen Hong Mengfan Luo Yang Shi Heng Zhang Zhaokun xiong Gang Yao Bo Lai State Key Laboratory of Hydraulics and Mountain River Engineering College of Architecture and EnvironmentSichuan UniversityChengdu 610065China Sino-German Centre for Water and Health Research Sichuan UniversityChengdu 610065China Chengdu Baixi Environmental Technology Company Chengdu 610065China d Institute of Environmental Engineering RWTH Aachen UniversityGermany

Fast Fe(III)/Fe(II)circulation in heterogeneous peroxymonosulfate(PMS)activation remains as a bottleneck issue that restricts the development of PMS based advanced oxidation ***,we proposed a facile ammonia reduction strategy and synthesized a novel FeVO3-x catalysts to activate PMS for the degradation of a typical pharmaceutical,carbamazepine(CBZ).Rapid CBZ removal could be achieved within 10 min,which outperforms most of the other iron or vanadium-based *** paramagnetic resonance analysis and chemical probe experiments revealed SO_(4)^(·-),·OH,O_(2)^(·-)and high valent iron(Fe(IV))were all generated in this system,but SO4·-and Fe(IV)primarily contributed to the degradation of ***,X-ray photoelectron spectroscopy and X-ray adsorption spectroscopy indicated that both the generated low-valent V provides and oxygen vacancy acted as superior electron donors and accelerated internal electron transfer via the unsaturated V-O-Fe ***,the proposed system also exhibited satisfactory performance in practical *** work provides a promising platform in heterogeneous PMS activation.

关键词： Peroxymonosulfate Fe(III) Fe(II)cycle Electron shuttles Oxygen vacancy Bimetallic catalysts

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