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Effect of FeSi additive in dual-chamber sample cup on thermal analysis characteristic values and vermiculating rate of compacted graphite iron

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China Foundry 2024年第1期21卷 91-100页

作者： De-quan Shi Ze-yu liu gui-li Gao Yi-cheng Feng School of Materials and Chemistry University of Shanghai for Science and TechnologyShanghai 200093China School of Materials Science and Chemical Engineering Harbin University of Science&TechnologyHarbin 150040China School of Mechanical and Energy Engineering Shanghai Technical Institute of Electronics and InformationShanghai 201411China

Thermal analysis plays a key role in the online inspection of molten iron *** solidification process of molten iron can be reflected by thermal analysis curves,and silicon is one of important elements affecting the solidification of molten *** this study,FeSi75 was added in one chamber of the dual-chamber sample cup,and the influences of FeSi75 additive on the characteristic values of thermal analysis curves and vermiculating rate were *** results show that with the increase of FeSi75,the start temperature of austenite formation TALfirstly decreases and then increases,but the start temperature of eutectic growth TSEF,the lowest eutectic temperature TEU,temperature at maximum eutectic reaction rate TEM,and highest eutectic temperature TERkeep always an *** temperature at final solidification point TEShas little *** FeSi75 additive has different influences on the vermiculating rate of molten iron with different vermiculation,and the vermiculating rate increases for lower vermiculation molten iron while decreases for higher *** to the thermal analysis curves obtained by a dual-chamber sample cup with 0.30wt.%FeSi75 additive in one chamber,the vermiculating rate of molten iron can be evaluated by comparing the characteristic values of these *** time differenceΔtERcorresponding to the highest eutectic temperature TERhas a closer relationship with the vermiculating rate,and a parabolic regression curve between the time differenceΔtERand vermiculating rateηhas been obtained within the range of 65%to 95%,which is suitable for the qualified melt.

关键词： FeSi75 additive characteristic value vermiculating rate thermal analysis compacted graphite iron

Orientation controlled photogenerated carriers on selfsupporting CdS/Ni_(3)S_(2) paper toward photocatalytic hydrogen evolution and biomass upgrading

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Rare Metals 2024年第5期43卷 2015-2025页

作者： Xiao-Yan liu Qing Cao gui-Xiang li Hui liu li-li Zeng li-li Zhao Bin Chang Xi-Wen Wang Hong liu Wei-Jia Zhou Institute for Advanced Interdisciplinary Research School of Chemistry and Chemical EngineeringUniversity of JinanJinan 250022China Institute of Chemical Sciences and Engineering Ecole Polytechnique Federale de Lausanne1015LausanneSwitzerland KAUST Catalysis Center King Abdullah University of Science and TechnologyThuwal 23955-6900Kingdom of Saudi Arabia School of Environment and Energy South China University of TechnologyGuangzhou Higher Education Mega CenterGuangzhou 510006China State Key Laboratory of Crystal Materials Shandong UniversityJinan250100China School of Mechanical Engineering Xi'an Jiaotong UniversityXi'an 710054China

The appropriate regulation of band structure is an effective strategy in constructing efficient photocatalytic *** photocatalytic system mainly employs powder photocatalysts,which makes their recovery reliant on expensive separation processes and severely limits their industrial ***,we constructed a novel CdS/Ni_(3)S_(2)heterostructure using free-standing and flexible nickel fiber paper as the *** regulated energy band structure achieves effective electron–hole *** as-synthesized flexible photocatalyst exhibits considerable photocatalytic activity toward the H_(2)evolution reaction under visible-light irradiation,with an H_(2)production rate of5.63μmol·cm^(-2)·h^(-1)(14.1 mmol·g^(-1)cat·h^(-1)according to the catalyst loading content).Additionally,the otherwisewasted excited holes simultaneously drive organic transformations to yield value-added organic products,thus markedly improving the photocatalytic H_(2)evolution *** a photocatalytic system is scaled up further,where a self-supported 20 cm×25 cm sample achieves a champion H_(2)production rate of 60-80μmol·h^(-1)under practical sun *** newly developed self-supported photocatalyst produces opportunities for practical solar H2production with biomass upgrading.

关键词： Self-supporting photocatalyst CdS/Ni_(3)S_(2) heterojunction Hydrogen evolution Biomass upgrading Large-scaleapplication

A Novel Anti-Collision Algorithm for Large Scale of UHF RFID Tags Access Systems

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Computers, Materials & Continua 2024年第7期80卷 897-912页

作者： Xu Zhang Yi He Haiwen Yi Yulu Zhang Yuan li Shuai Ma gui li Zhiyuan Zhao Yue liu Junyang liu Guangjun Wen Jian li School of Information and Communication Engineering/Yibin Institute University of Electronic Science and Technology of ChinaChengdu611731China Department of IoT Technology Research China Mobile Research InstituteBeijing100053China The 10th Research Institute of China Electronics Technology Group Corporation Chengdu611731China College of Information and Communication National University of Defense TechnologyWuhan430019China

When the radio frequency identification(RFID)system inventories multiple tags,the recognition rate will be seriously affected due to *** on the existing dynamic frame slotted Aloha(DFSA)algorithm,a sub-frame observation and cyclic redundancy check(CRC)grouping combined dynamic framed slotted Aloha(SUBF-CGDFSA)algorithm is *** algorithm combines the precise estimation method of the quantity of large-scale tags,the large-scale tags grouping mechanism based on CRC pseudo-randomcharacteristics,and the Aloha anti-collision optimization mechanism based on sub-frame *** grouping tags and sequentially identifying themwithin subframes,it accurately estimates the number of remaining tags and optimizes frame length accordingly to improve efficiency in large-scale RFID *** outcomes demonstrate that this proposed algorithmcan effectively break through the system throughput bottleneck of 36.8%,which is up to 30%higher than the existing DFSA standard scheme,and has more significant advantages,which is suitable for application in largescale RFID tags scenarios.

关键词： Radio frequency identification anti-collision tags grouping dynamic framed slotted Aloha

Passive IoT Localization Technology Based on SD-PDOA in NLOS and Multi-Path Environments

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Computers, Materials & Continua 2024年第7期80卷 913-930页

作者： Junyang liu Yuan li Yulu Zhang Shuai Ma gui li Yi He Haiwen Yi Yue liu Xiaotao Xu Xu Zhang Jinyao He Guangjun Wen Jian li School of Information and Communication Engineering/Yibin Institute University of Electronic Science and Technology of ChinaChengdu611731China Department of IoT Technology Research China Mobile Research InstituteBeijing100053China The 10th Research Institute of China Electronics Technology Group Corporation Chengdu611731China College of Information and Communication National University of Defense TechnologyWuhan430019China

Addressing the challenges of passive Radio Frequency Identification(RFID)indoor localization technology in Non-line-of-Sight(NLoS)and multipath environments,this paper presents an innovative approach by introducing a combined technology integrating an improved Kalman Filter with Space Domain Phase Difference of Arrival(SD-PDOA)and Received Signal Strength Indicator(RSSI).This methodology utilizes the distinct channel characteristics in multipath and NLoS contexts to effectively filter out interference and accurately extract localization information,thereby facilitating high precision and stability in passive RFID *** efficacy of this approach is demonstrated through detailed simulations and empirical tests conducted on a custom-built experimental platform consisting of passive RFID tags and an R420 *** findings are significant:in NLoS conditions,the four-antenna localization system achieved a notable localization accuracy of 0.25 m at a distance of 5 *** complex multipath environments,this system achieved a localization accuracy of approximately 0.5 m at a distance of 5 *** compared to conventional passive localization methods,our proposed solution exhibits a substantial improvement in indoor localization accuracy under NLoS and multipath *** research provides a robust and effective technical solution for high-precision passive indoor localization in the Internet of Things(IoT)system,marking a significant advancement in the field.

关键词： Indoor localization multipath and NLoS environments combined SD-PDOA and RSSI technology

Management and classification of the fracture of lateral process of talus:An overview and literature update

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World Journal of Clinical Cases 2024年第15期12卷 2487-2498页

作者： Chao-Qun Wang Ulrich Stockle Sheng-Nan Dong Xu-gui li Ze-Xi ling Department of Traumatic Orthopedics The Affiliated Hospital of Wuhan Sports UniversityWuhan 430079Hubei ProvinceChina Center of Musculoskeletal Surgery Berlin CharitéMedical University HospitalBerlin 13353Germany

Fracture of the lateral process of the talus(FLPT)is uncommon in clinical practice and can be easily missed or *** recent years,as researchers from all over the world have further deepened their research on FLPT,there has been a breakthrough in the classification,and the methods and principles of clinical management have changed accordingly;however,there is still no standardized guideline for the diagnosis and management of FLPT,and there have been few relevant literature review articles related to this kind of fracture in the past at least 5 *** this article,we review the clinical classification,classification-based therapeutic recommendations,and prognosis of FLPT,with the aim of providing a reference for the clinical diagnosis and management of this infrequent fracture.

关键词： Fracture of the lateral process of the talus Fracture of the talus Hindfoot injuries Intraarticular fracture Subtalar joint

Des-Arg(9)bradykinin as a causal metabolite for autism spectrum disorder

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World Journal of Psychiatry 2024年第1期14卷 88-101页

作者： Zhong-Yu Huang Zi-Pan Lyu Hong-gui li Hua-Zhi You Xiang-Na Yang Cai-Hui Cha Center for Medical Research on Innovation and Translation Institute of Clinical MedicineGuangzhou First People’s HospitalSchool of MedicineSouth China University of TechnologyGuangzhou 510000Guangdong ProvinceChina School of Biological Sciences Nanyang Technological UniversityNanyang Ave 639798Singapore Department of Pediatrics First Affiliated Hospital of Guangzhou University of Chinese MedicineGuangzhou 510405Guangdong ProvinceChina Department of Nutrition First Affiliated Hospital of Guangzhou University of Chinese MedicineGuangzhou 510405Guangdong ProvinceChina Department of Pediatric Traditional Chinese Medicine Clinic Guangzhou Women and Children's Medical CenterGuangzhou 510632Guangdong ProvinceChina Department of Psychology Guangzhou Women and Children's Medical CenterGuangzhou 510632Guangdong ProvinceChina

BACKGROUND Early diagnosis and therapeutic interventions can greatly enhance the developmental trajectory of children with autism spectrum disorder(ASD).However,the etiology of ASD is not completely *** presence of confounding factors from environment and genetics has increased the difficulty of the identification of diagnostic biomarkers for *** To estimate and interpret the causal relationship between ASD and metabolite profile,taking into consideration both genetic and environmental *** A two-sample Mendelian randomization(MR)analysis was conducted using summarized data from large-scale genome-wide association studies(GWAS)including a metabolite GWAS dataset covering 453 metabolites from 7824 European and an ASD GWAS dataset comprising 18381 ASD cases and 27969 healthy *** in plasma were set as exposures with ASD as the main *** causal relationships were estimated using the inverse variant weight(IVW)*** also performed leave-one-out sensitivity tests to validate the robustness of the *** on the drafted metabolites,enrichment analysis was conducted to interpret the association via constructing a protein-protein interaction network with multi-scale evidence from databases including Infinome,SwissTargetPrediction,STRING,and *** Des-Arg(9)-bradykinin was identified as a causal metabolite that increases the risk of ASD(β=0.262,SE=0.064,P_(IVW)=4.64×10^(-5)).The association was robust,with no significant heterogeneity among instrument variables(P_(MR Egger)=0.663,P_(IVW)=0.906)and no evidence of pleiotropy(P=0.949).Neuroinflammation and the response to stimulus were suggested as potential biological processes mediating the association between Des-Arg(9)bradykinin and *** Through the application of MR,this study provides practical insights into the potential causal association between plasma metabolites and *** findings offer perspectives for the discovery of diagnos

关键词： Des-Arg(9)bradykinin Autism spectrum disorder Mendelian randomization Metabolite Enrichment analysis

DCC装置稳定塔复合蒸发式空气冷却器管束泄漏原因分析及对策

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石油炼制与化工 2024年第4期55卷 128-132页

作者：李贵中海石油宁波大榭石化有限公司浙江宁波315812

某石化公司2.2 Mt/a催化裂解装置稳定塔复合蒸发式空气冷却器(空冷器)自装置首次开工以来多次出现管束泄漏的情况。在对空冷器管束外壁垢样成分进行鉴定的基础上,对空冷器管束泄漏的原因进行了详细分析,可以归结为垢下腐蚀、缝隙腐蚀和... 详细信息

某石化公司2.2 Mt/a催化裂解装置稳定塔复合蒸发式空气冷却器(空冷器)自装置首次开工以来多次出现管束泄漏的情况。在对空冷器管束外壁垢样成分进行鉴定的基础上,对空冷器管束泄漏的原因进行了详细分析,可以归结为垢下腐蚀、缝隙腐蚀和Cl-腐蚀。针对上述原因,采取加强水质控制、升级管束材质、定期进行腐蚀检测和优化操作条件等措施,可以减缓空冷器管束腐蚀速率,延长空冷器运行周期。另外,针对在役及发生泄漏的空冷器管束,制定合理的监控运行措施和应急处置方案,可有效减轻管束泄漏程度,保证安全生产。

关键词：催化裂解稳定塔复合蒸发式空气冷却器管束泄漏腐蚀

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文助江山:论苏轼对宋朝各地的文学塑造

四川大学学报（哲学社会科学版） 2024年第2期 127-139,214,215页

作者：李贵上海师范大学人文学院上海200234

关于文学与地理的关系,中国传统的权威理论是“江山之助”。但从中唐到清末,也存在“人助江山”“文助江山”之说,宋人对文学塑造地域的重要作用有更自觉的认识,苏轼的作品就是“文助江山”说的典型例证。他形塑、创造了宋代的许多地方... 详细信息

关于文学与地理的关系,中国传统的权威理论是“江山之助”。但从中唐到清末,也存在“人助江山”“文助江山”之说,宋人对文学塑造地域的重要作用有更自觉的认识,苏轼的作品就是“文助江山”说的典型例证。他形塑、创造了宋代的许多地方,描绘地理特征,建构地方形象,造就观念空间,投射心理结构,捍卫多元化和包容性,体现出宋朝历史过程的空间维度以及历史在空间中的嵌入方式,宋朝山川藉此永存。透过苏轼的地理感知和地理表达,读者看到一个空间化、在地化、去中心化的宋朝。江山助文,文亦助江山,帮助促成地理的人文化。文学创作是一种表达感知、塑造形象、留存记忆、建构意义的超越性行动,比地理的生命更长久,纵使陵谷变迁,文学也能通过记忆和想象令江山不朽,并创造新的胜迹。“文助江山”说揭示出中国古代文学的别样特色和成就。

关键词：文助江山苏轼宋朝地方塑造历史的空间维度

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互文视角与苏轼作品的准确阐释

学术月刊 2024年第8期56卷 135-146页

作者：李贵上海师范大学人文学院上海200234

苏轼研究存在准确解读文本的问题,传统“内证”“外证”之法有其局限性,需要引入“互文”视角。苏轼作品的重要互文体现在苏轼不同作品之间、苏轼与苏之间、苏轼与同时人之间、苏轼作品的多媒介文本之间;加上苏与前代文献之间、后世和... 详细信息

苏轼研究存在准确解读文本的问题,传统“内证”“外证”之法有其局限性,需要引入“互文”视角。苏轼作品的重要互文体现在苏轼不同作品之间、苏轼与苏之间、苏轼与同时人之间、苏轼作品的多媒介文本之间;加上苏与前代文献之间、后世和域外对苏轼作品的吸收和改写,则苏轼作品的“互文性”共有六种关系,其中第一种属于“内部互文”,后五种属于“外部互文”,苏轼的创作因而成为一种“对话式”写作。通过举例分析证明,当前的苏轼研究要有自觉的互文意识,对苏轼作品进行一定程度的解构与重组,在互文性的语境中展开对话,才能解决疑难问题,作出准确阐释,如此将催生新的问题意识,极大拓宽文本的意义空间。从互文视角阐释苏轼,也符合其本人读《诗经》之法。

关键词：苏轼作品互文性内部互文外部互文对话