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World Journal of Clinical Cases 2022年第4期10卷 1320-1325页

作者： zeng zeng Cong-xian Chen Department of Ultrasound Zhejiang Provincial People's HospitalHangzhou 310000Zhejiang ProvinceChina

BACKGROUND The radial nerve(RN)splits into two main branches at the elbow:The superficial branch of RN(SBRN)and the deep branch of *** SBRN can be easily damaged in acute trauma due to its superficial *** SUMMARY A 55-year-old male patient injured his right wrist 10 mo ***,suturing and bandaging were performed in the emergency *** months after the scar had healed,he felt numbness and tingling in the dorsal surface of the thumb of the right *** the surgery of resection and SBRN anastomosis were *** pathological findings showed it as traumatic *** months after surgery,the patient felt numbness and tingling in the right dorsal surface of the thumb *** tenderness was marked in the operated *** indicated that the SBRN was adhered to the surrounding *** patient refused further surgical treatment and underwent ultrasound-guided needle release plus corticosteroid injection of the *** weeks later,the tenderness in the surgical area was reduced by 70%,the numbness in the dorsal surface of the thumb of the right hand was reduced by 40%and the nerve swelling evaluated by ultrasound was *** months passed,he did not feel any numbness or tingling sensation of his right *** is the first report of ultrasound-guided needle release plus corticosteroid injection of the *** Ultrasound can evaluate the condition of the RN,and the relationship with surrounding ***-guided needle release plus corticosteroid injection is an effective and safe treatment for SBRN adhesion.

关键词： Ultrasound-guided Needle release Superficial radial nerve Traumatic neuroma Corticosteroid injection Case report

First-principles study of electronic structure and optical properties of Er:Lu_(2)O_(3)

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Journal of Rare Earths 2021年第4期39卷 453-459页

作者： xian Zhang Honglei Zhao Sen Gao Qingfeng zeng School of Advanced Materials and Nanotechnology Xidian UniversityXi'an 710071China International Center for Materials Discovery School of Materials Science and EngineeringNorthwestern Poly technical UniversityXi'an 710072China

In the present computational study,we found that Er:Lu_(2)O_(3)materials have promise for application in laser *** crystal structure and the electronic and optical properties of Er:Lu_(2)O_(3)materials were studied using first-principle calculations under the framework of density functional *** on the experimental and calculated results,the structure of Lu_(2)O_(3)was *** calculated results show that doping by Er^(3+)can effectively improve its absorption coefficient in the ultraviolet region and improve the static dielectric constant of Lu_(2)O_(3).As the doping concentration of Er^(3+)increases,the energy of the valence band electrons excited to the conduction band decreases,and the transition is more likely to *** absorption coefficient,reflectance,and electron energy loss spectroscopy are bathochromic *** Lu_(2-x)Er_(x)O_(3)(0till retains a low absorption coefficient reflectance in the mid-infrared and visible *** calculations therefore show that rare earth doping can effectively regulate the electronic structure and optical properties of Lu_(2)O_(3).

关键词： Electronic structure First principles Optical property Er:Lu_(2)O_(3) Rare earths

Kinetics of the electrochemical process of galena electrodes in the diethyldithiocarbamate solution

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International Journal of Minerals,Metallurgy and Materials 2010年第6期17卷 669-674页

作者： Li-li Cheng ti-chang Sun xian-ping Luo Dian-zuo Wang School of Civil and Environmental Engineering University of Science and Technology Beijing Beijing 100083 China School of Resources and Environmental Engineering Jiangxi University of Science and Technology Ganzhou 341000 China Chinese Academy of Engineering Beijing 100038 China

The electrochemical process of galena in a pH 12.8 buffer solution was investigated using chronoamperometry and chronopotentiometry. To establish kinetic parameters on the surface of galena in the diethyldithiocarbamate solution, the exchange current density and the dependence of current density on reaction time were determined. Experimental results demonstrate that the exchange current density of galena is 1.585× 10^-2A/m2 in the diethyldithiocarbamate-free solution. In the diethyldithiocarbamate solution, the thickness of lead diethyldi- thiocarbamate adsorbed on the surface of galena is 3.28 molecular layers, the diffusion coefficient of diethyldithiocarbamate on the surface of galena electrodes is 1.13 × 10^-10 m2/s, and the exchange current density of galena is 0.45 A/m2. Lead diethyldithiocarbamate on the surface of galena is firmly adsorbed.

关键词： galena electrochemistry flotation kinetics

First-principles study of structure,mechanical and optical properties of La-and Sc-doped Y2O3

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Journal of Rare Earths 2019年第8期37卷 879-885,I0004页

作者： xian Zhang Sen Gao Wenhua Gui Qingfeng zeng School of Advanced Materials and Nanotechnology Xidian UniversityXi'an 710071China International Center for Materials Discovery School of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi'an 710072China

The electronic,mechanical and optical properties of La-and Sc-doped Y2O3 were investigated using firstprinciples *** doping sites of Sc and La in Y2O3 were *** calculated values of the energy of formation show that the most energetically favorable site for a La atom in Y2O3 is a d-site Y atom,while for Sc a b-site Y atom is the more stable *** calculated band gap shows a slight decrease with increasing La or Sc *** calculated results for the mechanical and optical properties of Y(2-x)RxO3(R=Sc or La,0ting external shocks,and increased hardness and mechanical *** improved mechanical properties are achieved without sacrificing the optical properties of the doped *** the doping of La or Sc in Y2O3 is permissible in the preparation of Y2O3 transparent ceramics,of course,doping of La or Sc will benefit the sintering of transparent ceramics.

关键词： Y2O3 Mechanical properties Optical properties First-principles Rare earths

Understanding and Generating Ultrasound Image Description

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Journal of Computer Science & Technology 2018年第5期33卷 1086-1100页

作者： xian-Huu zeng Bang-Gui Liu Meng Zhou School of Computer Science and Technology Chongqing University of Posts and Telecommunications Chongqing 400065 China

To understand the content of ultrasound images more conveniently and more quickly, in this paper, we propose a coarse-to-fine ultrasound image captioning ensemble model, which can automatically generate the annotation text that is composed of relevant n-grams to describe the disease information in the ultrasound images. First, the organs in the ultrasound images are detected by the coarse classification model. Second, the ultrasound images are encoded by the corresponding fine-grained classification model according to the organ labels. Finally, we input the encoding vectors to the language generation model, and the language generation model generates automatically annotation text to describe the disease information in the ultrasound images. In our experiments, the encoding model can obtain the high accuracy rate in the ultrasound image recognition. And the language generation model can automatically generate high-quality annotation text. In practical applications, the coarse-to-fine ultrasound image captioning ensemble model can help patients and doctors obtain the well understanding of the contents of ultrasound images.

关键词： ultrasound image fine-grained classification image captioning

Robust lossless data hiding scheme

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Journal of Zhejiang University-Science C(Computers and Electronics) 2010年第2期11卷 101-110页

作者： xian-ting zeng Xue-zeng PAN Ling-di PING Zhuo LI School of Computer Science and Technology Zhejiang University Hangzhou 310027 China College of Information Engineering China Jiliang University Hangzhou 310018 China

This paper presents a robust lossless data hiding scheme. The original cover image can be recovered without any distortion after data extraction if the stego-image remains intact, and conversely, the hidden data can still be extracted correctly if the stego-image goes through JPEG compression to some extent. A cover image is divided into a number of non-overlapping blocks, and the arithmetic difference of each block is calculated. By shifting the arithmetic difference value, we can embed bits into the blocks. The shift quantity and shifting rule are fixed for all blocks, and reversibility is achieved. Furthermore, because the bit-0- and bit-1-zones are separated and the particularity of the arithmetic differences, minor changes applied to the stego-image generated by non-malicious attacks such as JPEG compression will not cause the bit-0- and bit-l-zones to overlap, and robustness is achieved. The new embedding mechanism can enhance embedding capacity and the addition of a threshold can make the al- gorithm more robust. Experimental results showed that, compared with previous schemes, the performance of the proposed scheme is significantly improved.

关键词： Watermarking Lossless data hiding Reversible data hiding Robust lossless data hiding Semi-fragile authentication

Microstructure and properties of pure iron/copper composite cladding layers on carbon steel

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International Journal of Minerals,Metallurgy and Materials 2016年第8期23卷 920-927页

作者： Long Wan Yong-xian Huang Shi-xiong Lü ti-fang Huang Zong-liang Lü State Key Laboratory of Advanced Welding and Joining Harbin Institute of Technology Harbin World Wide Welding Co. Ltd.

In the present study, pure iron/copper composite metal cladding was deposited onto carbon steel by tungsten inert gas welding. The study focused on interfacial morphological, microstructural, and mechanical analyses of the composite cladding layers. Iron liquid–solid-phase zones were formed at copper/steel and iron interfaces because of the melting of the steel substrate and iron. Iron concentrated in the copper cladding layer was observed to exhibit belt, globule, and dendrite morphologies. The appearance of iron-rich globules indicated the occurrence of liquid phase separation（LPS） prior to solidification, and iron-rich dendrites crystallized without the occurrence of LPS. The maximum microhardness of the iron/steel interface was lower than that of the copper/steel interface because of the diffusion of elemental carbon. All samples fractured in the cladding layers. Because of a relatively lower strength of the copper layer, a short plateau region appeared when shear movement was from copper to iron.

关键词： tungsten inert gas welding metal cladding pure iron copper carbon steel interfacial properties

High Refractive Index without Absorption in a Ladder-Type System

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Chinese Physics Letters 2014年第3期31卷 58-61页

作者： zeng Zhi-Qiang HOU Bang-Pin LIU Fu-ti SHAO Ju-xiang School of Physics and Electronic Engineering Yibin University Yibin 644000 Computational Physics Key Laboratory of Sichuan Province Yibin University Yibin 644000 School of Physics and Electronic Engineering Sichuan Normal University Chengdu 610066

A three-level ladder-type system with vacuum-induced coherence and incoherent pumping is studied to obtain a high refractive index without absorption. It is shown that the enhancement of the refractive index without absorption can be accomplished by choosing the proper values of the incoherent pumping, the angle between the two dipole moments, the probe detuning and the relative phase of the two coherent fields.

关键词： REFRACtiVE index RESEARCH ABSORPtiON -- Research DIPOLE moments OPtiCAL pumping PHYSICS research

Environmental Mn(Ⅱ) enhances the activity of dissimilatory arsenate-respiring prokaryotes from arsenic-contaminated soils

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Journal of Environmental Sciences 2023年第3期125卷 582-592页

作者： Yan Wu Weiwei Wu Yifan Xu Yanxia Zuo xian-Chun zeng State Key Laboratory of Biogeology and Environmental Geology&School of Environmental Studies China University of Geosciences(Wuhan)Wuhan 430074China Institute of Hydrobiology the Chinese Academy of SciencesWuhan 430072China

Many investigations suggest that dissimilatory arsenate-respiring prokaryotes (DARPs) play a key role in stimulating reductive mobilization of As from solid phase into groundwater,but it is not clear how environmental Mn(Ⅱ) affects the DARPs-mediated reductive mobilization of *** resolve this issue,we collected soil samples from a realgar tailingsaffected *** found that there were diverse arsenate-respiratory reductase (arr) genes in the *** microbial communities had high arsenate-respiring activity,and were able to efficiently stimulate the reductive mobilization of *** to the microcosms without Mn(Ⅱ),addition of 10 mmol/L Mn(Ⅱ) to the microcosms led to 23.99%-251.79% increases in the microbial mobilization of As,and led to 133.3%-239.2% increases in the abundances of arr *** further isolated a new cultivable DARP,Bacillus sp.F11,from the arseniccontaminated *** completely reduced 1 mmol/L As(V) in 5 days under the optimal reaction *** further found that it was able to efficiently catalyze the reductive mobilization and release of As from the solid phase;the addition of 2 mmol/L Mn(Ⅱ) led to 98.49%-248.78% increases in the F11 cells-mediated reductive mobilization of As,and70.6%-104.4% increases in the arr gene *** data suggest that environmental Mn(Ⅱ) markedly increased the DARPs-mediated reductive mobilization of As in arseniccontaminated *** work provided a new insight into the close association between the biogeochemical cycles of arsenic and manganese.

关键词： dissimilatory arsenate-respiring prokaryote Arsenic mobilization Arsenic-contaminated groundwater Arsenate reduction Mn(II)