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Mechanism of defect evolution in H^(+)and He^(+)implanted InP

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Chinese Physics B 2021年第8期30卷 70-74页

作者： Ren-Jie Liu jia-Jie Lin N Daghbouj jia-liang sun Tian-Gui You Peng Gao Nie-Feng sun Min Liao Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education School of Materials Science and EngineeringXiangtan UniversityXiangtan 411105China Hunan Provincial Key Laboratory of Thin Film Materials and Devices School of Materials Science and EngineeringXiangtan UniversityXiangtan 411105China State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050China China Nanhu Academy of Electronics and Information Technology Jiaxing 314000China Department of Control Engineering Faculty of Electrical EngineeringCzech Technical University in PragueTechnick´a 216000 Prague 6Czechia Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Science and Technology on Power Sources Laboratory Tianjin Institute of Power SourcesTianjin 300384China The 13th Research Institute CETCShijiazhuang 050051China

The defect evolution in InP with the 75 keV H^(+)and 115 keV He^(+)implantation at room temperature after subsequent annealing has been investigated in *** the same ion implantation fluence,the He^(+)implantation caused much broader damage distribution accompanied by much higher out-of-plane strain with respect to the H^(+)implanted *** annealing,the H^(+)implanted InP did not show any blistering or exfoliation on the surface even at the high fluence and the H2 molecules were stored in the heterogeneously oriented platelet ***,the He molecules were stored into the large bubbles which relaxed toward the free surface,creating blisters at the high fluence.

关键词： ion implantation defect evolution ion-slicing damaged band

Heterogeneous integration of GaSb layer on(100)Si substrate by ion-slicing technique

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Chinese Physics B 2022年第7期31卷 442-447页

作者： Ren-Jie Liu jia-Jie Lin Zheng-Hao Shen jia-liang sun Tian-Gui You Jin Li Min Liao Yi-Chun Zhou Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education School of Materials Science and EngineeringXiangtan UniversityXiangtan 411105China Hunan Provincial Key Laboratory of Thin Film Materials and Devices School of Materials Science and EngineeringXiangtan UniversityXiangtan 411105China College of Information Science and Engineering Jiaxing UniversityJiaxing 314001China State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information TechnologyChinese Academy of Science(CAS)Shanghai 200050China Beijing Semicore ZKX Electronics Equipment Co. LtdBeijing 100000China

Integration of the high-quality Ga Sb layer on an Si substrate is significant to improve the Ga Sb application in optoelectronic *** this work,a suitable ion implantation fluence of 5×10^(16)-cm^(-2)H ions for Ga Sb layer transfer is *** the strain change and the defect evolution,the blistering and exfoliation processes of Ga Sb during annealing is revealed in *** the direct wafer bonding,the Ga Sb layer is successfully transferred onto a(100)Si substrate covered by 500-nm thickness thermal oxide SiO_(2)*** being annealed at 200℃,the Ga Sb layer shows high crystalline quality with only 77 arcsec for the full width at half maximum(FWHM)of the x-ray rocking curve(XRC).

关键词： ion-slicing technique heterogeneous integration GaSbOI

A single-pixel elemental imaging method using neutron-induced gamma-ray activation

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Nuclear Science and Techniques 2025年第1期36卷 1-12页

作者： Can Cheng Yong-Ji Xie Xun-Rong Xia jia-Yu Gu Dong Zhao Yi-Ze Chen Ai-Yun sun Xu-Wen liang Wen-Bao jia Da-Qian Hei Department of Ionizing Radiation and Medical Engineering Jiangsu Institute of MetrologyNanjing 210023China Institute of Nuclear Analytical Technology Nanjing University of Aeronautics and AstronauticsNanjing 211106China China Nuclear Power Engineering Co. LtdBeijing 100840China School of Nuclear Science and Technology Lanzhou UniversityLanzhou 730000China

Neutron-induced gamma-ray imaging is a spectroscopic technique that uses characteristic gamma rays to infer the elemental distribution of an ***,this technique requires the use of large facilities to supply a high neutron flux and a time-consuming detection procedure involving direct collimating *** this study,a new method based on low neutron flux was proposed.A single-pixel gamma-ray detector combined with random pattern gamma-ray masks was used to measure the characteristic gamma rays emitted from the *** of the elemental distribution in the sample,comprising 30×30 pixels,were reconstructed using the maximum-likelihood expectation-maximization *** results demonstrate that the elemental imaging of the sample can be accurately determined using this *** proposed approach,which eliminates the need for high neutron flux and scanning measurements,can be used for in-field imaging applications.

关键词： Elemental imaging Neutron-induced gamma-ray activation Single-pixel imaging

A novel method for simultaneous measurement of^(222)Rn and^(220)Rn progeny concentrations measured by an alpha spectrometer

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Nuclear Science and Techniques 2025年第1期36卷 127-139页

作者： Zhong-Kai Fan jia-Le sun Hao-Xuan Li Xiang-Ming Cai Hui Yang Shou-Kang Qiu Yan-liang Tan jian Shan School of Nuclear Science and Technology University of South ChinaHengyang 421001China College of Physics and Electronic Engineering Hengyang Normal UniversityHengyang 421008China

The accumulation of^(222)Rn and^(220)Rn progeny in poorly ventilated environments poses the risk of natural radiation exposure to the public.A previous study indicated that satisfactory results in determining the^(222)Rn and^(220)Rn progeny concentrations by measuring the total alpha counts at five time intervals within 560 min should be expected only in the case of high progeny concentrations in *** complete the measurement within a relatively short period and adapt it for simultaneous measurements at comparatively lower^(222)Rn and^(220)Rn progeny concentrations,a novel mathematical model was proposed based on the radioactive decay *** model employs a nonlinear fitting method to distinguish nuclides with overlapping spectra by utilizing the alpha particle counts of non-overlapping spectra within consecutive measurement cycles to obtain the concentrations of^(222)Rn and^(220)Rn progeny in *** verification experiments were conducted using an alpha *** experimental results demonstrate that the concentrations of^(222)Rn and^(220)Rn progeny calculated by the new method align more closely with the actual circumstances than those calculated by the total count method,and their relative uncertainties are all within±16%.Furthermore,the measurement time was reduced to 90 min,representing an acceleration of 84%.The improved capability of the new method in distinguishing alpha particles with similar energies emitted from ^(218)Po and^(212)Bi,both approximately 6 MeV,contributed to realizing more accurate *** proposed method has the potential advantage of measuring relatively low concentrations of^(222)Rn and^(220)Rn progeny in air more quickly via air filtration.

关键词： ^(222)Rn ^(220)Rn Progeny concentration Nonlinear fitting method Alpha spectrometer

Gradient age-precipitation behavior induced by gradient nano-grain in Mg-Gd-Ag-Zr alloy

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Journal of Iron and Steel Research International 2025年第1期32卷 19-24页

作者： Bang-jun Li jia-peng sun Jing Han Guo-song Wu College of Materials Science and Engineering Hohai UniversityNanjing 210024JiangsuChina School of Mechanical and Electrical Engineering China University of Mining and TechnologyXuzhou 221116JiangsuChina

Gradient nano-grained structure is frequently engineered into metallic materials,including Mg alloys,to achieve superior combination of strength and ***,the influence of this microstructural feature on aging precipitation behavior remains inadequately *** this study,the age-precipitation behavior of a gradient nano-grained Mg-Gd-Ag-Zr alloy prepared via ultrasonic severe surface rolling was *** result indicates that the aging precipitation behavior exhibits a depth-dependent variation within this *** the nano-grained surface layer,hierarchicalβnano-precipitates are predominant,while at greater depths,the precipitates consist ofβnanoparticles located at grain boundaries,along with intragranularβ′andγ″*** formation ofβnano-precipitates deviates from the conventional precipitation behavior observed in Mg-Gd-Ag alloys,and is attributed to the high density of defects induced by the surface nano-grained *** finding advances our understanding of the precipitation behavior in the alloys with heterogeneous microstructure.

关键词： Mg alloy Gradient Precipitation Aging behavior Microstructure

Efficacy and Safety of Juan Bi Pill with Add-on Methotrexate in Active Rheumatoid Arthritis:A 48-Week,Multicentre,Randomized,Double-Blind,and Placebo-Controlled Trial

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Chinese Journal of Integrative Medicine 2025年第2期31卷 99-107页

作者： jia Qing-yun WANG Yi-ru sun Da-wei MAO jian-chun XUE Luan GU Xiao-hua YU Xiang PIAO Xue-mei XU Hao liang Qian-qian Spine Institute Longhua Hospital Affiliated to Shanghai University of Traditional Chinese MedicineShanghai(200032)China Spine Institute Shanghai University of Traditional Chinese MedicineShanghai(200032)China Key Laboratory of Theory and Therapy of Muscles and Bones Ministry of Education(Shanghai University of Traditional Chinese Medicine)Shanghai(201203)China Department of Orthopedics Linyi People's HospitalLinyiShandong Province(273000)China Department of Orthopedics Yueyang Hospital of Integrated Traditional Chinese and Western Medicine Affiliated to Shanghai University of Traditional Chinese MedicineShanghai(200437)China Department of Orthopedics the Seventh People's Hospital of Shanghai University of Traditional Chinese MedicineShanghai(200137)China

Objective:To explore the efficacy and safety of Juan Bi Pill(JBP)in treatment of active rheumatoid arthritis(RA).Methods:From February 2017 to May 2018,115 participants from 4 centers were randomly divided into JBP group(57 cases)and placebo group(58 cases)in a 1:1 ratio using a random number table *** received a dose of JBP(4 g,twice a day,orally)combined with methotrexate(MTX,10 mg per week)or placebo(4 g,twice a day,orally)combined with MTX for 12 *** were required with follow-up visits at 24 and 48 weeks,attending 7 assessment *** were undergo disease activity assessment 7 times(at baseline and 2,4,8,12,24,48 weeks)and safety assessments 6 times(at baseline and 4,8,12,24,48 weeks).The primary endpoint was 28-joint Disease Activity Score(DAS28-ESR and DAS28-CRP).The secondary endpoints included American College of Rheumatology(ACR)criteria for 20%and 50%improvement(ACR20/50),Health Assessment Questionnaire Disability Index(HAQ-DI),clinical disease activity index(CDAI),visual analog scale(VAS),Short Form-36(SF-36)score,Medial Outcomes Study(MOS)sleep scale score,serum erythrocyte sedimentation rate(ESR),C-reactive protein(CRP),tender joint count,swollen joint count,and morning *** adverse reactions were observed during the ***:After 12 weeks of treatment,DAS28-ESR and DAS28-CRP scores in both groups were lower than before treatment(both P<0.01),while the remission rate of DAS28-ESR and DAS28-CRP and low disease activity of JBP group were higher than those in the placebo group(both P<0.01).JBP demonstrated better efficacy on ACR20 and ACR50 compliance rate at 12 and 48 weeks comparing to placebo(all P<0.05).The CDAI and HAQ-DI score,pain VAS and global VAS change of RA patients and physicians,the serum ESR and CRP levels,and the number of tenderness and swelling joints were lower than before treatment at 4,8,12,24,48 weeks in both groups(P<0.05 or P<0.01),while the reduction of above indices in

关键词： Chinese medicine Juan Bi Pill methotrexate active rheumatoid arthritis randomized controlled trial

Ti_(3)C_(2)T_(x) Composite Aerogels Enable Pressure Sensors for Dialect Speech Recognition Assisted by Deep Learning

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Nano-Micro Letters 2025年第5期17卷 1-15页

作者： Yanan Xiao He Li Tianyi Gu Xiaoteng jia Shixiang sun Yong Liu Bin Wang He Tian Peng sun Fangmeng Liu Geyu Lu State Key Laboratory of Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityChangchun 130012People’s Republic of China School of Integrated Circuits Tsinghua UniversityBeijing 100084People’s Republic of China International Center of Future Science Jilin UniversityChangchun 130012People’s Republic of China

Wearable pressure sensors capable of adhering comfortably to the skin hold great promise in sound ***,current intelligent speech assistants based on pressure sensors can only recognize standard languages,which hampers effective communication for non-standard language ***,we prepare an ultralight Ti_(3)C_(2)T_(x)MXene/chitosan/polyvinylidene difluoride composite aerogel with a detection range of 6.25 Pa-1200 k Pa,rapid response/recovery time,and low hysteresis(13.69%).The wearable aerogel pressure sensor can detect speech information through the throat muscle vibrations without any interference,allowing for accurate recognition of six dialects(96.2%accuracy)and seven different words(96.6%accuracy)with the assistance of convolutional neural *** work represents a significant step forward in silent speech recognition for human–machine interaction and physiological signal monitoring.

关键词： Pressure sensor Wearable sensor Ti_(3)C_(2)T_(x) composite aerogel Dialect speech recognition

Efficient OpenMP Based Z-curve Encoding and Decoding Algorithms

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Computers, Materials & Continua 2025年第1期82卷 1313-1327页

作者： Zicheng Zhou Shaowen sun Teng liang Mengjuan Li Fengling Xia School of Electronic Science and Engineering University of Electronic Science and Technology of ChinaChengdu611731China Faculty of Information Engineering and Automation Kunming University of Science and TechnologyKunming650500China School of Communications Information Engineering Yunnan Communications Vocational and Technical CollegeKunming650500China Library Yunnan Normal UniversityKunming650500China Faculty of Civil Aviation and Aeronautics Kunming University of Science and TechnologyKunming650500China

Z-curve’s encoding and decoding algorithms are primely important in many Z-curve-based *** bit interleaving algorithm is the current state-of-the-art algorithm for encoding and decoding *** simple,its efficiency is hindered by the step-by-step coordinate shifting and bitwise *** tackle this problem,we first propose the efficient encoding algorithm LTFe and the corresponding decoding algorithm LTFd,which adopt two optimization methods to boost the algorithm’s efficiency:1)we design efficient lookup tables(LT)that convert encoding and decoding operations into table-lookup operations;2)we design a bit detection mechanism that skips partial order of a coordinate or a Z-value with consecutive 0s in the front,avoiding unnecessary iterative *** propose order-parallel and point-parallel OpenMP-based algorithms to exploit the modern multi-core *** results on discrete,skewed,and real datasets indicate that our point-parallel algorithms can be up to 12.6×faster than the existing algorithms.

关键词： Z-curve lookup table OpenMP bit detection mechanism

Potential preservative mechanisms of cardiac rehabilitation pathways on endothelial function in coronary heart disease

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Science China(Life Sciences) 2025年第1期68卷 158-175页

作者： Wen-Tao sun jian-Yong Du jia Wang Yi-Long Wang Er-Dan Dong Research Center for Cardiopulmonary Rehabilitation University of Health and Rehabilitation Sciences Qingdao Hospital(Qingdao Municipal Hospital)Schoolof Health and Life SciencesUniversityof Health and Rehabilitation SciencesQingdao 266071China Department of Cardiology and Instituteof Vascular Medicine Peking University Third HospitalTheInstituteofCardiovascular SciencesPeking UniversityState Key Laboratoryof Vascular Homeostasisand RemodelingPeking UniversityBeijing 100191China

Cardiac rehabilitation,a comprehensive exercise-based lifestyle and medical management,is effective in decreasing morbidity and improving life quality in patients with coronary heart *** function,an irreplaceable indicator in coronary heart disease progression,is measured by various methods in traditional cardiac rehabilitation pathways,including medicinal treatment,aerobic training,and smoking ***,studies on the effect of some emerging cardiac rehabilitation programs on endothelial function are *** article briefly reviewed the endothelium-beneficial effects of different cardiac rehabilitation pathways,including exercise training,lifestyle modification and psychological intervention in patients with coronary heart disease,and related experimental models,and summarized both uncovered and potential cellular and molecular mechanisms of the beneficial roles of various cardiac rehabilitation pathways on endothelial *** exercise training and some lifestyle interventions,the enhanced bioavailability of nitric oxide,increased circulating endothelial progenitor cells(EPCs),and decreased oxidative stress are major contributors to preventing endothelial dysfunction in coronary heart ***,the preservation of endothelial-dependent hyperpolarizing factors and inflammatory suppression play *** the one hand,to develop more endothelium-protective rehabilitation methods in coronary heart disease,adequately designed and sized randomized multicenter clinical trials should be advanced using standardized cardiac rehabilitation programs and existing assessment *** the other hand,additional studies using suitable experimental models are warranted to elucidate the relationship between some new interventions and endothelial protection in both macro-and microvasculature.

关键词： cardiac rehabilitation coronary heart disease endothelial function