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Research status and prospects of the fractal analysis of metal material surfaces and interfaces

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 20-38页

作者： Qinjin Dai Xuefeng Liu xin Ma Shaojie tian Qinghe Cui Beijing Advanced Innovation Center for Materials Genome Engineering University of Science and Technology BeijingBeijing 100083China Beijing Laboratory of Metallic Materials and Processing for Modern Transportation University of Science and Technology BeijingBeijing 100083China Laboratory for Advanced Materials Processing of Ministry of Education University of Science and Technology BeijingBeijing 100083China School of Mechanical and Electrical Engineering Xinjiang Institute of EngineeringUrumqi 830023China

As a mathematical analysis method,fractal analysis can be used to quantitatively describe irregular shapes with self-similar or self-affine *** analysis has been used to characterize the shapes of metal materials at various scales and *** methods make it difficult to quantitatively describe the relationship between the regular characteristics and properties of metal material surfaces and ***,fractal analysis can be used to quantitatively describe the shape characteristics of metal materials and to establish the quantitative relationships between the shape characteristics and various properties of metal *** the perspective of two-dimensional planes and three-dimensional curved surfaces,this paper reviews the current research status of the fractal analysis of metal precipitate interfaces,metal grain boundary interfaces,metal-deposited film surfaces,metal fracture surfaces,metal machined surfaces,and metal wear *** relationship between the fractal dimensions and properties of metal material surfaces and interfaces is *** from three perspectives of fractal analysis,namely,research scope,image acquisition methods,and calculation methods,this paper identifies the direction of research on fractal analysis of metal material surfaces and interfaces that need to be *** is believed that revealing the deep influence mechanism between the fractal dimensions and properties of metal material surfaces and interfaces will be the key research direction of the fractal analysis of metal materials in the future.

关键词： metal material surfaces and interfaces fractal analysis fractal dimension homogeneity

低FODMAPs饮食改善肠易激综合征症状对中医药治疗的启示

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世界华人消化杂志 2017年第25期25卷 2289-2295页

作者：徐心田陆为民南京中医药大学附属医院江苏省南京市210029

食物在肠易激综合征(irritable bowel syndrome,IBS)患者发病和治疗中发挥重要作用.食物可以影响IBS发病机制相关的多种生理因素,包括胃动力、内脏感觉、脑-肠相互作用、微生物、渗透性、免疫活性以及神经-内分泌功能等.近年来,IBS的饮... 详细信息

食物在肠易激综合征(irritable bowel syndrome,IBS)患者发病和治疗中发挥重要作用.食物可以影响IBS发病机制相关的多种生理因素,包括胃动力、内脏感觉、脑-肠相互作用、微生物、渗透性、免疫活性以及神经-内分泌功能等.近年来,IBS的饮食疗法广受关注,有研究表明低可发酵的低聚糖、二糖、单糖、多元醇(fermentable oligosaccharides,disaccharides,monosaccharides and polyols,FODMAPs)饮食可有效改善IBS症状.中医有药食同源之理论,低FODMAPs饮食的研究为我们提供了新思路,提示中医食疗对改善IBS症状有一定优势,"药食一体化"可在很大程度上改善和调节患者体质,从而为恢复IBS患病个体的生理状态提供条件.

关键词：肠易激综合征低FODMAPs 中医药治疗

CO_2激光相干成像雷达及其在精确制导中的应用前景

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红外技术 2000年第4期22卷 42-46页

作者：曾宪林田新伟空军第一航空学院基础部河南信阳464000

概述了CO2 激光相干成像雷达的特点 ,介绍了它的基本工作原理、技术关键及在精确制导中的应用前景 ,分析了CO2 激光相干成像雷达在精确制导中最有发展前途的两个应用领域。

关键词：激光雷达精确制导二氧化碳

From waste to wealth:Coal tar residue derived carbon materials as low-cost anodes for potassium-ion batteries

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 464-475页

作者： Zhonghua Lu Jun Shen xin Zhang Lingcong Chao Liang Chen Ding Zhang Tao wei Shoudong Xu College of Chemical Engineering and Technology Taiyuan University of TechnologyTaiyuan 030024China College of Chemistry Taiyuan University of TechnologyTaiyuan 030024China School of Chemical Engineering and Pharmacy Wuhan Institute of TechnologyWuhan 430205China School of Energy and Power Jiangsu University of Science and TechnologyZhenjiang 212003China

Carbon materials are widely recognized as highly promising electrode materials for various energy storage system *** tar residues(CTR),as a type of carbon-rich solid waste with high value-added utilization,are crucially important for the development of a more sustainable *** this study,we employed a straightforward direct carbonization method within the temperature range of 700-1000℃to convert the worthless solid waste CTR into economically valuable carbon materials as anodes for potassium-ion batteries(PIBs).The effect of carbonization temperature on the microstructure and the potassium ions storage properties of CTR-derived carbons(CTRCs)were systematically explored by structural and morphological characterization,alongside electrochemical performances *** on the co-regulation between the turbine layers,crystal structure,pore structure,functional groups,and electrical conductivity of CTR-derived carbon carbonized at 900℃(CTRC-900H),the electrode material with high reversible capacity of 265.6m Ah·g^(-1)at 50 m A·g^(-1),a desirable cycling stability with 93.8%capacity retention even after 100 cycles,and the remarkable rate performance for PIBs were ***,cyclic voltammetry(CV)at different scan rates and galvanostatic intermittent titration technique(GITT)have been employed to explore the potassium ions storage mechanism and electrochemical kinetics of *** indicate that the electrode behavior is predominantly governed by surface-induced capacitive processes,particularly under high current densities,with the potassium storage mechanism characterized by an“adsorption-weak intercalation”*** work highlights the potential of CTR-based carbon as a promising electrode material category suitable for high-performance PIBs electrodes,while also provides valuable insights into the new avenues for the high value-added utilization of CTR.

关键词： coal tar residue carbon materials anode potassium-ion batteries high value-added

难治性癫痫患者呼吸道感染病原菌分布特征、耐药性及感染因素分析

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中国病原生物学杂志 2020年第9期15卷 1080-1083,1092页

作者：裴静陈明田新玮高华新疆医科大学第五附属医院神经内科新疆乌鲁木齐830000 新疆医科大学第五附属医院风湿免疫科新疆乌鲁木齐830000

目的检测和分析难治性癫痫患者呼吸道感染病原菌分布特征、耐药性及感染因素。方法选择2017年1月-2019年12月住院治疗的难治性癫痫合并感染患者302例,统计患者感染位置,检测呼吸道感染病原菌种类及耐药性,并对感染的发生进行单因素分析... 详细信息

目的检测和分析难治性癫痫患者呼吸道感染病原菌分布特征、耐药性及感染因素。方法选择2017年1月-2019年12月住院治疗的难治性癫痫合并感染患者302例,统计患者感染位置,检测呼吸道感染病原菌种类及耐药性,并对感染的发生进行单因素分析和多因素Logistic回归分析。结果302例难治性癫痫合并感染患者中呼吸道感染占79.47%(240/302)。240例难治性癫痫合并呼吸道感染患者共培养分离出病原菌261株,其中革兰阴性菌占63.61%(166/261),以鲍曼不动杆菌(29.12%)、铜绿假单胞菌(17.24%)、肺炎克雷伯菌(9.58%)为主;革兰阳性菌占30.26%(79/302),以金黄色葡萄球菌(24.90%)为主;真菌占6.13%(16/261)。鲍曼不动杆菌对头孢哌哃/舒巴坦、氨曲南、氯霉素的耐药率均为0;铜绿假单胞菌对哌拉西林、头孢吡肟、氨苄西林的耐药率均>50.00%,对头孢哌哃/舒巴坦、氨曲南、阿米卡星、米诺环素以及氯霉素耐药率均为0;金黄色葡萄球菌对苯唑西林、莫西沙星的耐药率均>50.00%,对甲氧西林、万古霉素、利奈唑胺耐药率均为0。经Logistic多因素分析,年龄>55岁、住院时间>10 d、合并慢性基础疾病、意识昏迷、侵入性操作、抗生素使用时间>7d、癫痫持续状态为难治性癫痫患者合并呼吸道感染的独立危险因素(均P<0.05)。结论呼吸道感染为难治性癫痫发病率较高的感染类型,病原菌以鲍曼不动杆菌、铜绿假单胞菌、金黄色葡萄球菌为主,应结合药敏结果选择适宜的抗菌药物治疗,改善患者预后。

关键词：难治性癫痫呼吸道感染病原菌药敏试验危险因素分析

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大颗粒煤在移动床中的热解模型

上海交通大学学报 2001年第5期35卷 733-736页

作者：胡国新田伟学许伟程惠尔上海交通大学动力与能源工程学院上海200030

应用煤热解的分布活化能机理 ,考虑热解热效应以及热解产物在煤粒内部的传热传质 ,提出了大颗粒煤在移动床中的热解模型 .该模型可以预测煤热解过程析出挥发分份额、温度等参数在煤粒内的分布及其随时间变化的规律 .对大颗粒煤在移动床... 详细信息

应用煤热解的分布活化能机理 ,考虑热解热效应以及热解产物在煤粒内部的传热传质 ,提出了大颗粒煤在移动床中的热解模型 .该模型可以预测煤热解过程析出挥发分份额、温度等参数在煤粒内的分布及其随时间变化的规律 .对大颗粒煤在移动床中对流和辐射传热条件下的热解进行了数值模拟 ,计算结果表明 ,大颗粒煤的热解必须考虑煤的热解热效应 ,而热解产物的传质冷却效应则可以忽略 .同时 ,讨论了煤粒表层和中心的热解状况以及颗粒直径。

关键词：大颗粒煤热解热效应传热传质

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一种基于修饰关系的自然语言语义分析方法

计算机科学 2010年第5期37卷 197-202,290页

作者：田卫新朱福喜但志平武汉大学计算机学院武汉430072 三峡大学电气信息学院宜昌443000

自然语言语义分析是自然语言处理技术走向深层应用的瓶颈。当前在概念、关系层次上的语义分析方法主要有两种:基于统计的特征向量抽取方法和基于语义词典(WordNet、HowNet等)的语义相似度计算方法。对于具体应用这两种方法都具有较大不... 详细信息

自然语言语义分析是自然语言处理技术走向深层应用的瓶颈。当前在概念、关系层次上的语义分析方法主要有两种:基于统计的特征向量抽取方法和基于语义词典(WordNet、HowNet等)的语义相似度计算方法。对于具体应用这两种方法都具有较大不足,前者由于统计模型的关系只适用于段落、篇章或多文档等粗粒度的语义分析,而不适合在句子词汇一级的应用;后者能方便处理实体概念之间的各种关系,但是如果想正确处理真实文本中的复杂修饰关系如概念与事件、概念与概念修饰、事件与事件修饰等关系,还需对语义词典和计算方法做进一步的扩展。提出了按照真实文本语句中词语之间修饰关系建立知识库,并设计了根据该知识库中已有修饰关系计算未知关系的算法;提出了可以依照修饰关系建立自然语言构句法的思路并给出了相关算法;最后给出了在语义分析系统上的实验,结果证明该方法是有效的。

关键词：自然语言处理语义分析修饰关系知识库

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基于SNA的高校班级学生管理研究

软科学 2012年第6期26卷 141-144页

作者：代娴兰建龙田鑫炜四川大学工商管理学院成都610064 四川大学公共管理学院成都610064

在分析高等院校班级学生管理存在的问题基础上,从辅导员如何迅速解决高校班级普遍存在的问题和提高班级管理绩效角度出发,运用SNA(社会网络分析)方法对高校班级大学生的交往网络进行研究,挖掘出有利于辅导员对班级管理进行及时决策的有... 详细信息

在分析高等院校班级学生管理存在的问题基础上,从辅导员如何迅速解决高校班级普遍存在的问题和提高班级管理绩效角度出发,运用SNA(社会网络分析)方法对高校班级大学生的交往网络进行研究,挖掘出有利于辅导员对班级管理进行及时决策的有效关键社交信息,通过数据分析,辅导员可以找出班级中存在的边缘人物、中心性人物和非正式组织。

关键词： SNA 社会网络高校班级管理辅导员

A novel active-passive protection strategy endows carbonyl iron with excellent intelligent anti-corrosion and microwave absorption dual functional characteristics

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Nano Research 2025年第1期18卷 487-500页

作者： wei tian Quanyuan Feng Linbo Zhang Yinfan Liu Xian Jian Longjiang Deng Institute of Microelectronics School of Information Science and TechnologySouthwest Jiaotong UniversityChengdu 611756China National Engineering Researching Centre of Electromagnetic Radiation Control Materials Key Laboratory of Multi-Spectral Absorbing Materials and Structures of Ministry of EducationState Key Laboratory of Electronic Thin Films and Integrated DevicesSchool of Electronic Science and EngineeringUniversity of Electronic Science and Technology of ChinaChengdu 611731China School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731China The Yangtze Delta Region Institute(Huzhou)&School of Electronic Science and Engineering University of Electronic Science and Technology of ChinaHuzhou 313001China

Carbonyl iron absorbers(CI)face significant challenges in practical applications,such as corrosion,interface bonding failure,detachment,and high maintenance ***,we have developed intelligent self-healing technology based on proactive/passive mechanisms via in situ synthesis of self-healing factors(polydopamine/benzotriazole(PDA/BTA))and physical barrier layers(SiO_(2)/1,1,1,3,3,3-hexamethyl disilazane,SiO_(2)/HMDS)to enhance corrosion resistance,while also being compatible with efficient microwave absorption *** unique multiscale structure gives full play to the utilization of the roles of each functional layer,including the intelligent self-healing features of PDA/BTA,physical shielding and spatial confinement characteristics of SiO_(2)/HMDS,and magnetic-dielectric synergistic mechanism resulted from the good impedance matching characteristics,the conduction loss,the interfacial polarization loss and natural *** asfabricated composites achieved an exceptional minimum reflection loss value of-55.4 dB at 10.7 GHz and the effective absorption band of 7.6 ***,it still exhibits obvious self-healing and corrosion resistance characteristics after 360 h corrosion treatment,ascribed to the self-healing mechanism of PDA/BTA and the blocking intervention effect of SiO_(2)/*** work is considered to pave the way for the synthesis of high-performance magnetic absorbers,especially in enhancing their intelligent self-healing ability in corrosive environments.

关键词： microwave absorption intelligent self-healing technology carbonyl iron multiscale structure magneticdielectric synergistic mechanism