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Linking anisotropy with Fe_3C distribution in AISI 1045 steel

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International Journal of minerals,Metallurgy and Materials 2015年第12期22卷 1293-1303页

作者： Ke-chang Shen Gui-hua Li yi-min sun Yong-gang Wang ying-jie Li Guang-hui Cao Wei-min Wang Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (ministry of Education) Shandong University Shandong Institute of Metrology School of Materials Science and Engineering Shanghai University

The anisotropy of the microstructure, thermal expansion behavior, corrosion resistance and magnetic properties of AISI 1045 steel was investigated. The distribution of Fe3C lameUae in the investigation plane parallel to the radial directions of molds was observed to differ from that in the investigation plane perpendicular to the radial directions by transmission electron microscopy. The lattice constants a0 of α-Fe deduced from the XRD patterns of samples prepared using a sand （S）-mold and cut parallel to the radial direction of the mold （S//） and using a metal （M）-mold and cut parallel to the radial direction （M//）, the corrosion resistance measured using an electrochemical work- station, and the magnetic permeability obtained by vibrating sample magnetometry also indicated the existence of anisotropy in the tested samples. The anisotropic change of corrosion potential （Eeorr）, pitting potential （Epit） and magnetic permeability （μ） of the samples was observed to depend on the orientation factorF200 of α-Fe in the measured samples, which is controlled by the distribution of Fe3C lamellae in the eutectoid structure.

关键词： carbon steel microstructure anisotropy lattice constants

Different Acupuncture Therapies for Postherpetic Neuralgia:An Overview of Systematic Reviews and Meta-analysis

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Chinese Journal of Integrative Medicine 2025年第1期31卷 55-67页

作者： XIA Yun-fan sun Ruo-han LI Shi-min WANG yi-yi LI Rong-rong FANG Jian-qiao The Third Clinical Medical College of Zhejiang Chinese Medical University Hangzhou310000China Department of Rehabilitation Medicine Hangzhou Third People’s Hospital Affiliated to Zhejiang Chinese Medical UniversityHangzhou310000China Department of Acupuncture the Third Affiliated Hospital of Zhejiang Chinese Medical UniversityHangzhou310000China

Background: Postherpetic neuralgia(PHN) is the most common complication of herpes zoster infection and affects patients' quality of life. Acupuncture therapy is regarded as a competitive method of treatment for analgesia. Objective: To summarize evidence from systematic reviews(SRs) and evaluate the effectiveness and safety of different acupuncture therapies for treating PHN. Methods: Eight electronic databases were searched from their inception to August 5, 2022, including 4 international electronic databases(PubMed, EMBASE, the Cochrane Library, and Web of Science) and 4 Chinese databases(Chinese Biomedical Database, China National Knowledge Infrastructure, VIP Database and Wanfang Database).Methodological quality was assessed by A Measurement Tool to Assess Systematic Reviews 2(AMSTAR 2).The Risk of Bias in Systematic Review(ROBIS) tool was used to assess the risk of bias in SRs. Evidence level was assessed by the Grading of Recommendations Assessment, Development, and Evaluation(GRADE)approach. Results: Totally, 7 SRs were included, including 128 studies and 9,792 patients. In AMSTAR 2, most of the SRs were of low or critically low levels since they had more than 1 critical deficiency. In ROBIS, 1 SR(14.29%)was rated as high risk, and the other 6(85.71%) were rated as low risk. In the GRADE system, 9 outcomes(28.13%)were valued as high level, 5(15.63%) as moderate level, 1(3.13%) as low, and 17(53.13%) as very low. In the effectiveness of acupuncture therapy, the group "moxibustion vs. original medical treatment" [mean difference(MD)=–1.44, 95% confidence interval(CI): –1.80 to –1.08, I2=99%, P<0.00001] was of the highest heterogeneity and the group "bloodletting vs. original medical treatment"(MD=–2.80, 95% CI: –3.14 to –2.46, I2=0, P<0.00001)was of the lowest heterogeneity. Six SRs have reported the safety of their studies and no serious events were shown in the treatment and control groups. Conclusions: Acupuncture therapy seems to be effective in treating PH

关键词： acupuncture postherpetic neuralgia systematic review Chinese medicine

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高精度星敏感器标定方法研究

仪器仪表学报 2017年第9期38卷 2154-2160页

作者：易敏邢飞孙婷王宏北京信息科技大学先进光电子技术国际合作联合实验室北京100192 清华大学精密仪器系北京100084

星敏感器是一种广泛应用在航天飞行器中的高精度姿态测量器件,精度标定是保证高精度测量的重要环节。为了尽量提高星敏感器的整体精度,对传统星敏感器标定方法进行了仿真分析,针对传统星敏感器标定方法模型参数难以解耦的弊端,提出单独... 详细信息

星敏感器是一种广泛应用在航天飞行器中的高精度姿态测量器件,精度标定是保证高精度测量的重要环节。为了尽量提高星敏感器的整体精度,对传统星敏感器标定方法进行了仿真分析,针对传统星敏感器标定方法模型参数难以解耦的弊端,提出单独标定主点,将星敏感器光学参数误差(如焦距、成像平面倾斜和畸变)等看作一个整体误差源,采用直接映射的方式进行标定。该方法简单方便、标定精度高,避免了传统方法中误差影响因素分析不全面及多次求取拟合近似值造成的累积误差。实验结果表明,该标定方法完全满足测量角误差2″的要求。

关键词：光学参数高精度标定整体误差源直接映射

Effects of different water levels on phytoplankton in the Harbin section of the Songhua River

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Journal of Oceanology and Limnology 2025年第1期43卷 134-146页

作者： yi’nan sun Jingshen LI Yawen FAN Xinxin LU College of Life Science and Technology Harbin Normal UniversityHarbin 150025China Key Laboratory of Aquatic Organisms Harbin Normal UniversityHarbin 150025China

The functional diversity index of a phytoplankton body has gradually become a new mean of measuring and *** explore the response of phytoplankton taxonomy and the functional diversity index to interannual environmental changes,a survey on the structure of the phytoplankton community and water physicochemical characteristics of the water was carried out at 28 sampling points in the Harbin section of the Songhua River for three consecutive years in every May from 2021 to *** taxonomy diversity index and the functional diversity index were ***,The relationship between the structure of the characteristics of the community and environmental factors was explored;secondly,we reveal the responses of taxonomic and functional diversity indices to different habitats between years;finally,we explore the main environmental factors that control the taxonomic and functional diversity indices of *** show that,initially,environmental factors in water changes caused by different water levels between years affected the composition of phytoplankton ***,by comparing the taxonomic diversity index and the functional diversity index on a time scale,we found that the taxonomic diversity index was more responsive to environmental ***,the main environmental factors on the phytoplankton taxonomic diversity index were dissolved oxygen,Taxonomic diversity index,and specific conductivity,and the main environmental factors that affected the functional diversity index were dissolved oxygen,turbidity,and water *** study reveals the important role of the taxonomic diversity index in river water quality evaluation,obtained new information on the relative precision of the taxonomic diversity index and the functional diversity index in the evaluation of ecological health of the water,and provided a reliable tool for monitoring river water quality based on aquatic organisms.

关键词： Songhua River Basin phytoplankton functional diversity biodiversity index watershed ecology

Malicious Document Detection Based on GGE Visualization

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Computers, Materials & Continua 2025年第1期82卷 1233-1254页

作者： Youhe Wang yi sun Yujie Li Chuanqi Zhou Henan Province Key Laboratory of Information Security Information Engineering UniversityZhengzhou450000China

With the development of anti-virus technology,malicious documents have gradually become the main pathway of Advanced Persistent Threat(APT)attacks,therefore,the development of effective malicious document classifiers has become particularly ***,detection methods based on document structure and behavioral features encounter challenges in feature engineering,these methods not only have limited accuracy,but also consume large resources,and usually can only detect documents in specific formats,which lacks versatility and *** address such problems,this paper proposes a novel malicious document detection method-visualizing documents as GGE images(Grayscale,Grayscale matrix,Entropy).The GGE method visualizes the original byte sequence of the malicious document as a grayscale image,the information entropy sequence of the document as an entropy image,and at the same time,the grayscale level co-occurrence matrix and the texture and spatial information stored in it are converted into grayscale matrix image,and fuses the three types of images to get the GGE color *** Convolutional Block Attention Module-EfficientNet-B0(CBAM-EfficientNet-B0)model is then used for classification,combining transfer learning and applying the pre-trained model on the ImageNet dataset to the feature extraction process of GGE *** shown in the experimental results,the GGE method has superior performance compared with other methods,which is suitable for detecting malicious documents in different formats,and achieves an accuracy of 99.44%and 97.39%on Portable Document Format(PDF)and office datasets,respectively,and consumes less time during the detection process,which can be effectively applied to the task of detecting malicious documents in real-time.

关键词： Malicious document visualization EfficientNet-B0 convolutional block attention module GGE image

Evaluation of surgical strategy for low anterior resection syndrome using preoperative low anterior resection syndrome score in China

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World Journal of Gastrointestinal Surgery 2025年第1期17卷 175-183页

作者： Yang-Tao Pan yi-min Lv Shi-Chao Zhou Dan-Yan Luo Hao sun Wei-Feng Lao Wei Zhou Department of Colorectal Surgery Sir Run Shaw Hospital Affiliated with Zhejiang UniversityHangzhou 310016Zhejiang ProvinceChina School of Mathematics Nanjing Audit UniversityNanjing 211815Jiangsu ProvinceChina Department of Surgery Zhejiang Hospital of Traditional Chinese Medicine(Zhejiang University of Traditional Chinese Medicine First Affiliated Hospital)Hangzhou 310000Zhejiang ProvinceChina NBU Health Science Center Ningbo UniversityNingbo 315000Zhejiang ProvinceChina

BACKGROUND Despite improved survival rates in rectal cancer treatment,many patients experience low anterior resection syndrome(LARS).The preoperative LARS score(POLARS)aims to address the limitations of LARS assessment by predicting outcomes preoperatively to enhance surgical *** To investigate the predictive accuracy of POLARS in assessing the occurrence of *** This study enrolled a total of 335 patients who underwent laparoscopic or robotic low anal sphincter-preserving surgery for rectal *** were categorized into three groups according to their POLARS score:no LARS(score 0-20),minor LARS(score 21-29),and major LARS(score 30-42).The QLQ-C30/CR29 scores were compared among these groups,and the agreement between POLARS predictions and the actual LARS scores was *** The study population was divided into three groups:major LARS(n=51,27.42%),minor LARS(n=109,58.6%),and no LARS(n=26,13.98%).Significant differences in the QLQ-C30 scales of social function,diarrhea,and financial impact were detected between the no LARS and major LARS groups(Pminor LARS and major LARS groups(Pminor LARS groups(Pminor LARS and major LARS groups(P<0.05).The predictive precision for major LARS using the POLARS score was 82.35%(42/51),with a recall of 35.89%(42/117).The mean absolute error(MAE)between the POLARS score and the actual LARS score was 8.92±*** contrast,the XGBoost(extreme gradient boosting)model achieved a lower MAE of 6.29±4.77,with a precision of 84.39%and a recall of 74.05%for predicting major *** The POLARS score demonstrated effectiveness and precision in predicting major LARS,thereby providing valuable insights into postoperative symptoms and patient quality of ***,the XGBoost model exh

关键词： Low anterior resection syndrome Preoperative assessment Predictive Accuracy Quality of life Machine learning

Recent advances of metal vacancies in energy and environmental catalysis:Synthesis,characterization,and roles

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Green Energy & Environment 2025年第1期10卷 84-108页

作者： Long sun Shunzheng Zhao Sirui Gao Ronghui Zhu yiran Tan Xiaolong Tang Honghong yi School of Energy and Environmental Engineering University of Science and Technology BeijingBeijing100083China Beijing Key Laboratory of Resource-oriented Treatment of Industrial Pollutants Beijing100083China

With the ongoing depletion of fossil fuels,energy and environmental issues have become increasingly critical,necessitating the search for effective ***,being one of the hallmarks of modern industry,offers a promising avenue for ***,the question of how to significantly enhance the performance of catalysts has gradually drawn the attention of *** engineering,a commonly employed and effective approach to improve catalyst activity,has become a significant research focus in the catalysis field in recent *** vacancies have received extensive attention due to their simple ***,exploration of metal vacancies has remained stagnant for a considerable period,resulting in a scarcity of comprehensive reviews on this ***,based on the latest research findings,this paper summarizes and consolidates the construction strategies for metal vacancies,characterization techniques,and their roles in typical energy and environmental catalytic ***,it outlines potential challenges in the future,aiming to provide valuable references for researchers interested in investigating metal vacancies.

关键词： Metal vacancies Catalysis Construction strategies Characterization techniques Roles

Dopaminergic Dysfunction and Glucose Metabolism Characteristics in Parkin-Induced Early-Onset Parkinson’s Disease Compared to Genetically Undetermined Early-Onset Parkinson’s Disease

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Phenomics 2023年第1期3卷 22-33页

作者： Feng-Tao Liu Jia-ying Lu yi-min sun Ling Li Yu-Jie Yang Jue Zhao Jing-Jie Ge Ping Wu Jie-Hui Jiang Jian-Jun Wu Chuan-Tao Zuo Jian Wang Department of Neurology National Clinical Research Center for Aging and Medicine&National Center for Neurological DisordersHuashan HospitalFudan University12 Wulumuqi Middle RoadShanghai 200040China Department of Nuclear Medicine&PET Center National Clinical Research Center for Aging and Medicine&National Center for Neurological DisordersHuashan HospitalFudan University518 East Wuzhong RoadShanghai 200235China Institute of Biomedical Engineering School of Life SciencesShanghai UniversityShanghai 200444China Human Phenome Institute Fudan UniversityShanghai 200433China

While early-onset Parkinson’s disease(EOPD)caused by mutations in the parkin gene(PRKN)tends to have a relatively benign course compared to genetically undetermined(GU)-EOPD,the exact underlying mechanisms remain *** aimed to search for the differences between PRKN-EOPD and GU-EOPD by dopamine transporter(DAT)and glucose metabolism positron-emission-tomography(PET)*** patients with PRKN-EOPD and 16 with GU-EOPD who accepted both ^(11)C-2b-carbomethoxy-3b-(4-trimethylstannylphenyl)tropane(^(11)C-CFT)and ^(18)F-fluorodeoxyglucose PET were *** ^(11)C-CFT uptake was analyzed on both regional and voxel levels,whereas glucose metabolism was assessed in a voxel-wise *** between DAT and glucose metabolism imaging,DAT imaging and clinical severity,as well as glucose metabolism imaging and clinical severity were *** clinical symptoms and DAT-binding pat-terns in the posterior putamen were highly symmetrical in patients with PRKN-EOPD,and dopaminergic dysfunction in the ipsilateral putamen was severer in patients with PRKN-EOPD than ***,the DAT binding was associ-ated with the severity of motor dysfunction in patients with GU-EOPD *** with PRKN-EOPD showed increased glucose metabolism in the contralateral medial frontal gyrus(supplementary motor area(SMA)),contralateral substantia nigra,contralateral thalamus,and contralateral ***,glucose metabolic activity in the contralateral medial frontal gyrus was inversely associated with regional DAT binding in the bilateral *** with PRKN-EOPD showed enhanced metabolic connectivity within the bilateral putamen,ipsilateral paracentral and precentral lobules,and the ipsilateral ***,compared to GU-EOPD,PRKN-EOPD is characterized by symmetrical,more severe dopaminergic dysfunction and relative increased glucose ***,SMA with elevated glucose metabolism and enhanced connectivity may act as compensatory mechan

关键词： Early-onset Parkinson’s disease Parkin Dopamine transporter ^(18)F-fluorodeoxyglucose Supplementary motor area

Multiple-stage W mineralization in the Guanfang W deposit,southeastern Yunnan Province,China:Insights from scheelite in-situ trace elemental and Sr isotopic analyses

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Acta Geochimica 2025年第1期44卷 112-127页

作者： Bin sun yi Liu Zhigang Kong Xuelong Liu Xiaojun Jiang Chao Li Wenchang Li Faculty of Land Resources Engineering Kunming University of Science and TechnologyNo.727 South Jingming RoadChenggong DistrictKunming City 650093Yunnan ProvinceChina Institute of mineral Resources Chinese Academy of Geological SciencesNo.26 Baiwanzhuang StreetXicheng DistrictBeijing 100037China

The Guanfang large-scale W deposit is located in the W polymetallic ore concentration area of Bozhushan in southeastern Yunnan,*** extensive research,the fluid evolution process of the deposit remains ambiguous,leading to controversy regarding its *** study conducted a detailed field geological survey,with systematic sampling of the KT6 orebody,to delineate mineralization *** mineralogy work,including the use of CL images of scheelite,in-situ LA-ICP-MS trace elements,and Sr isotopes,was carried out on diff erent generations of scheelite formed in various *** findings identified the evolution of fluids in the mineralization process,shedding light on the genesis of the *** study revealed four mineralization stages at the Guanfang W deposit:prograde skarn stage,retrograde skarn stage,quartz-sulfide stage,and carbonate-fluorite *** erent generations of scheelite(Sch I,Sch II,Sch III)were observed in the first three stages,displaying distinct chondrite-normalized REE *** REE of Sch I mainly substituted into the Ca site by REE^(3+)+□_(Ca),and there may be a similar substitution of Nb for REE,whereas it is not the main substitution *** REE of Sch II mainly enter the scheelite lattice in the form of REE 3++Na+,and there may be a substitution of Nb for REE *** the early stage,The REE of Sch III was mainly replaced by Nb for REE isomorphism,while in the later stage,the replacement mode of REE^(3+)+□_(Ca)coexisted with *** Mo content in scheelite,along with the corresponding Eu anomalies in both scheelite and garnet,collectively imply that the ore-forming fluids during various mineralization stages were predominantly oxidizing,with only slight reducibility observed in Sch *** in-situ Sr isotope ratios of scheelite concentrates ranged from 0.7093 to 0.7153,resembling those of the Bozhushan granite,indicating a relationship between W mineralization and *** addition,the Y/Ho ratios of scheeli

关键词： Guanfang W deposit Trace elements of scheelite In-situ Sr isotopes Southeast Yunnan