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Journal of Rare Earths 2024年第5期42卷 1001-1008,I0007页

作者： Zhen Zhang Huanhuan Chen Shiju Cao Jinhua Peng Peng Guo chang long Shan Wang chang Chen Yong Wu Ji'an Huang Xiaodong Du Haigen Wei School of Materials Science and Engineering Hefei University of TechnologyHefei230009China NationalLocal Joint Research Center of Non-ferrous Metal Materials and Processing Technology Hefei230009China Laboratory of Nonferrous Metal Material and Processing Engineering of Anhui Province Hefei230009China School of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiang212003China Institute of Industry and Equipment Technology Hefei University of TechnologyHefei230009China Faculty of Materials Metallurgy and Chemistry Jiangxi University of Science and TechnologyGanzhou341000China

Hot-extrusion and cold-rolling were conducted on Mg-Ce binary alloys to explore the effect of cerium(Ce)on microstructure,texture and mechanical properties of Mg *** addition of Ce results in significant grain refinement both in as-cast and hot-extruded *** basal texture is also weakened after extrusion and an inclined basal texture is formed with Ce *** strength and elongation of the Mg-Ce alloys are improved simultaneously due to such grain refinement and texture weakening *** cold-rolling,plenty of twins are found in the pure Mg and AZ31 plates while grains in the Mg-0.3Ce plate deform more uniformly without lamellar twin ***,Mg-0.3Ce alloys own strong and continuous strain hardening because Ce atoms and Mg-Ce precipitated phases serve as obstacles for dislocation slip.

关键词： Mg-Ce alloys Hot extrusion Cold-rolling Rare earths

Morphological and biochemical characteristics associated with autophagy in gastrointestinal diseases

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World Journal of Gastroenterology 2024年第11期30卷 1524-1532页

作者： Yi-Fan chang Jia-Jing Li Tao Liu Chong-Qing Wei Li-Wei Ma Vladimir N Nikolenko Wei-long chang Department of Gastrointestinal Surgery The First Affiliated Hospital of Zhengzhou UniversityZhengzhou 450052Henan ProvinceChina Department of Pathology The First Affiliated Hospital of Zhengzhou UniversityZhengzhou 450052Henan ProvinceChina Department of Clinical Laboratory The First Affiliated Hospital of Zhengzhou UniversityZhengzhou 450052Henan ProvinceChina Department of Human Anatomy and Histology I.M.Sechenov First Moscow State Medical University(Sechenov University)Moscow 119991Russia

Autophagy is a cellular catabolic process characterized by the formation of double-membrane *** electron microscopy is the most rigorous method to clearly visualize autophagic engulfment and degradation.A large number of studies have shown that autophagy is closely related to the digestion,secretion,and regeneration of gastrointestinal(GI)***,the role of autophagy in GI diseases remains *** article focuses on the morphological and biochemical characteristics of autophagy in GI diseases,in order to provide new ideas for their diagnosis and treatment.

关键词： Autophagy Morphological study Biochemical characteristics Subcellular structure Transmission electron microscopy Gastrointestinal diseases

Supramolecular polymer-based gel fracturing fluid with a double network applied in ultra-deep hydraulic fracturing

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Petroleum Science 2024年第3期21卷 1875-1888页

作者： Yong-Ping Huang Yong Hu chang-long Liu Yi-Ning Wu Chen-Wei Zou Li-Yuan Zhang Ming-Wei Zhao Cai-Li Dai School of Petroleum Engineering China University of Petroleum(East China)Qingdao266580ShandongPR China Shandong Key Laboratory of Oilfield Chemistry China University of Petroleum(East China)Qingdao 266580ShandongPR China SINOPEC Petroleum Exploration and Production Research Institute Beijing102206PR China CNOOC China Co Ltd Tianjin BranchTianjin300459PR China

A gel based on polyacrylamide,exhibiting delayed crosslinking characteristics,emerges as the preferred solution for mitigating degradation under conditions of high temperature and extended shear in ultralong *** viscosity/viscoelasticity of the fracturing fluid was required to maintain excellent proppant suspension properties before *** into account both the cost and the potential damage to reservoirs,polymers with lower concentrations and molecular weights are generally *** this work,the supramolecular action was integrated into the polymer,resulting in significant increases in the viscosity and viscoelasticity of the synthesized supramolecular polymer *** double network gel,which is formed by the combination of the supramolecular polymer system and a small quantity of Zr-crosslinker,effectively resists temperature while minimizing permeability damage to the *** results indicate that the supramolecular polymer system with a molecular weight of(268—380)×10^(4)g/mol can achieve the same viscosity and viscoelasticity at 0.4 wt%due to the supramolecular interaction between polymers,compared to the 0.6 wt%traditional polymer(hydrolyzed polyacrylamide,molecular weight of 1078×10^(4)g/mol).The supramolecular polymer system possessed excellent proppant suspension properties with a 0.55 cm/min sedimentation rate at 0.4 wt%,whereas the0.6 wt%traditional polymer had a rate of 0.57 cm/*** comparison to the traditional gel with a Zrcrosslinker concentration of 0.6 wt%and an elastic modulus of 7.77 Pa,the double network gel with a higher elastic modulus(9.00 Pa)could be formed only at 0.1 wt%Zr-crosslinker,which greatly reduced the amount of residue of the fluid after *** viscosity of the double network gel was66 m Pa s after 2 h shearing,whereas the traditional gel only reached 27 m Pa s.

关键词： Ultra-deep reservoir Gel fracturing fluid Double network Supramolecular polymer system Proppant suspension property

From Phenotypes to Molecules: Revolutionizing Gut Microbiota Identification Methods

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中国生物化学与分子生物学报 2024年第8期40卷 1065-1077页

作者： WANG Xuan LV chang-long ZHAI Jing-Bo Medical College Inner Mongolia Minzu UniversityTongliao 028000Inner MongoliaChina Research Centre of Chemical Biology Yanbian UniversityYanji 133002JilinChina Key Laboratory of Zoonose Prevention and Control at Universities of Inner Mongolia Autonomous Region Tongliao 028000Inner MongoliaChina Institute of Immunology China Medical UniversityShenyang 110000LiaoningChina Brucellosis Prevention and Treatment Engineering Research Center of Inner Mongolia Autonomous Region Tongliao 028000Inner MongoliaChina

The gut microbiota is a complex ecosystem composed of many bacteria and their *** plays an irreplaceable role in human digestion,nutrient absorption,energy supply,fat metabolism,immune regulation,and many other *** the structure and function of the gut microbiota,as well as their key genes and metabolites,will enable the early diagnosis and auxiliary diagnosis of diseases,new treatment methods,better effects of drug treatments,and better guidance in the use of *** identification of gut microbiota plays an important role in clinical diagnosis and treatment,as well as in drug research and ***,it is necessary to conduct a comprehensive review of this rapidly evolving *** identification methods cannot comprehensively capture the diversity of gut ***,with the rapid development of molecular biology,the classification and identification methods for gut microbiota have evolved from the initial phenotypic and chemical identification to identification at the molecular *** review integrates the main methods of gut microbiota identification and evaluates their *** pay special attention to the research progress on molecular biological methods and focus on the application of high-throughput sequencing technology in the identification of gut *** revolutionary method for intestinal flora identification heralds a new chapter in our understanding of the microbial world.

关键词： gut microbiota 16S rRNA real-time fluorescent qPCR high-throughput sequencing mass spectrum

Search for an exotic vectorlike X-quark in same-sign dilepton final states at the future 3 TeV CLIC

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Chinese Physics C 2024年第7期48卷 67-74页

作者：张艳菊常金龙刘太刚 School of Medical Engineering Xinxiang Medical UniversityXinxiang 453003China

Vectorlike quarks(VLQs)with masses at the TeV-scale have been predicted in many new physics scenarios beyond the Standard Model(SM).Based on a simplified(X,T)doublet model including the exotic vectorlike X quark(VLQ-X)with an electric charge 5/3,we study the production of the VLQ-X decaying into tW at the future Compact Linear Collider(CLIC)with √s=3 TeV including the initial state radiation and beamstrahlung *** focus on the final signals,including same-sign dileptons(electrons or muons),at least one b-tagged jet,and large missing transverse *** performing detailed signal-to-background analyses and detector simulations,we obtain the 2σexclusion capabilities and discovery reaches,respectively,on the mass of the VLQ-Xmx as well as the relevant parameters(Br(X→_(t)W))for mx≥1500GeV and the coupling strength g^(*) for mx≥1500 GeV)for some typical luminosities at the 3 TeV CLIC.

关键词： Vectorlike quarks CLIC same-sign dilepton

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小学榜样教育的五个维度

教学与管理 2024年第11期 18-21页

作者：吴昌龙中科大附中独墅湖学校

榜样教育是一种以榜样人物作为教育模范,帮助学生树立正确的人生目标和价值观,促进学生全面发展的教育方法。榜样教育源远流长,可以激励学生追求成功和超越自我。然而,榜样教育中依然存在着榜样人物追捧不当、榜样资源利用不充分、榜样... 详细信息

榜样教育是一种以榜样人物作为教育模范,帮助学生树立正确的人生目标和价值观,促进学生全面发展的教育方法。榜样教育源远流长,可以激励学生追求成功和超越自我。然而,榜样教育中依然存在着榜样人物追捧不当、榜样资源利用不充分、榜样教育流于形式等诸多问题。通过榜样教育资源的深度挖掘、教学主题的精准提取、真实性榜样寻访任务群的重构以及教学策略优化、评价策略的改进等方式可以为小学榜样教育资源的深入开发提供借鉴和启示。

关键词：榜样教育小学真实性情境任务群教学

活性可反应亚微米壳包覆CL-20及其性能表征

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火炸药学报 2024年第5期47卷 422-429,I0004页

作者：成雅芝任慧常世隆北京理工大学爆炸科学与安全防护全国重点实验室北京100081

为了获得高能低感的CL-20颗粒,采用喷雾干燥工艺改善CL-20原料的形貌,采用顺丁橡胶BR、微晶蜡和胶体石墨对CL-20/微纳复合铝粉进行钝感包覆,构建具有可反应活性、能量补强的包覆外壳,同时提升CL-20使用安全性。采用扫描电子显微镜(SEM)... 详细信息

为了获得高能低感的CL-20颗粒,采用喷雾干燥工艺改善CL-20原料的形貌,采用顺丁橡胶BR、微晶蜡和胶体石墨对CL-20/微纳复合铝粉进行钝感包覆,构建具有可反应活性、能量补强的包覆外壳,同时提升CL-20使用安全性。采用扫描电子显微镜(SEM)观察了包覆颗粒的表观形貌,编写MATLAB程序代码对SEM图像颗粒的长宽比和圆度值进行识别计算,表征其球形度,采用有机元素分析(EA)和电感耦合等离子体原子发射光谱(ICP-AES)分析测试包覆颗粒中CL-20和铝粉的实际含量,采用X射线衍射(XRD)对包覆颗粒进行晶型结构分析,采用GJB方法对包覆颗粒的感度和爆热进行测试,并与CL-20原料进行了对比,采用差式扫描-热重-红外-质谱联用(DSC-TG-FTIR-MS)对包覆颗粒及其分解产物进行热分析。结果表明,制备得到的包覆颗粒粒径在10μm左右,球形度较高,长宽比为1.03,圆度值为0.91;包覆颗粒中CL-20和铝粉的实际含量分别为88.17%和7.76%;包覆颗粒的晶型为β-CL-20,摩擦感度为36%,撞击感度爆炸概率为38%,撞击感度特性落高为13.4 cm,降感效果明显;爆热值为5946 J/g,是CL-20原料(6073 J/g)的97.91%,能量损失不超过3%。

关键词：物理化学 CL-20 可反应高活性喷雾干燥钝感包覆

三尺度分解和稀疏表示的红外和可见光图像融合

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光谱学与光谱分析 2024年第5期44卷 1425-1438页

作者：冀鲸宇张玉华邢娜王长龙林志龙姚江毅陆军工程大学石家庄校区河北石家庄050003

为提高对含噪声源图像的处理效果,以及提高融合图像的对比度、结构信息等,提出一种基于三尺度分解和稀疏表示的红外和可见光图像融合算法。首先,为增强对噪声的去除效果,并且维持源图像的结构和边缘特性,利用滚动引导滤波器对源图像进... 详细信息

为提高对含噪声源图像的处理效果,以及提高融合图像的对比度、结构信息等,提出一种基于三尺度分解和稀疏表示的红外和可见光图像融合算法。首先,为增强对噪声的去除效果,并且维持源图像的结构和边缘特性,利用滚动引导滤波器对源图像进行分解,将源图像分解为基础层和细节层;其次,为充分利用基础分量中的细节和能量,同时降低模型的复杂性,构造结构-纹理分解模型,将基础层再次分解为基础结构层和基础纹理层。然后分析三个分量的不同特点,使用不同的融合规则对三个分量分别进行融合,针对细节分量,其含有主要的噪声成分,但含噪声程度又不一样,因此根据图像含噪声的程度自适应确定稀疏融合去噪参数,从而同时实现对细节分量的融合和去噪,并且能够有效地提高计算效率;针对基础结构分量,其包含的细节特征较少,直接采用基于视觉显著图的加权平均技术进行预融合;针对基础纹理分量,由于其包含了视觉上重要的信息或图像特征,如边缘、直线和轮廓等活动信息,能够反映出原始基础图像的主要细节,因此采用主成分分析方法进行预融合,最终通过重构细节、基础结构和基础纹理层来得到融合图像。为验证所提方法的有效性,选取了多组红外和可见光图像进行试验,并与近期的五种方法CNN、FPDE、ResNet、IFEVIP、TIF进行了对比,采用主观和客观的形式对结果进行分析。实验结果表明,同其他图像融合算法进行对比分析,该方法能够兼顾含噪声和无噪声图像的融合,在有无噪声的情况下均能够将源图像的细节、亮度和结构保留到融合图像中,而且能有效地消除噪声。

关键词：图像融合噪声图像融合滚动引导滤波三尺度分解稀疏表示

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基于结构化视角的高中化学教材分析

东北师大学报（哲学社会科学版） 2024年第4期 73-81页

作者：单媛媛郑长龙东北师范大学化学教育研究所吉林长春130024

课程内容结构化整合是基础教育课程改革的重要理念,这种变革同样预示着教材研究视角和思路的转变。本研究以化学课程标准中结构化视角和科学哲学为理论依据,构建了包含5个一级编码和17个二级编码的化学教材编码系统,以人教版高中化学教... 详细信息

课程内容结构化整合是基础教育课程改革的重要理念,这种变革同样预示着教材研究视角和思路的转变。本研究以化学课程标准中结构化视角和科学哲学为理论依据,构建了包含5个一级编码和17个二级编码的化学教材编码系统,以人教版高中化学教材为研究对象,对其落实新课标课程内容化理念的内在内容特点和外在编排特点进行分析。研究结果表明,编码系统能有效揭示化学教材的结构化特点,为大概念、核心知识、基本思路与方法、重要态度及重要实践活动等要素提供一个全面的分析框架。人教版化学教材通过多种方式协同实现课程内容结构化,不仅深入贯彻了新课标的教育理念和规定要求,而且在转化实践中展现了独特的优势。未来研究应深度理解“课程化”过程中内容结构化课程理念,加强关注“教材化”过程中教材与课标的一致性,持续分析“教学化”过程中教师教学反馈性评价。

关键词：结构化 BCMAP 高中化学化学教材

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高中生“反应因果关系”思维水平测量工具的开发

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化学教育（中英文） 2024年第7期45卷 83-90页

作者：芦峰迟铭郑长龙东北师范大学教师教育研究院吉林长春130024

在塔兰克搭建的概念构造图的基础上,抽提出高中生“反应因果关系”大概念下的思维水平,发现学生思维水平越高,其回答模式对化学问题的解释力越强。思维水平较低的学生倾向于采用线性因果关系或单一因素来解释化学问题,而思维水平较高的... 详细信息

在塔兰克搭建的概念构造图的基础上,抽提出高中生“反应因果关系”大概念下的思维水平,发现学生思维水平越高,其回答模式对化学问题的解释力越强。思维水平较低的学生倾向于采用线性因果关系或单一因素来解释化学问题,而思维水平较高的学生更倾向于采用目的论或结构化的思维模式来解释化学问题。以高中生“反应因果关系”大概念下的思维水平为框架,基于部分计分Rasch模型(Partial credit Rasch model),运用布里格斯提出的定序多项选择项目,开发高中生“反应因果关系”思维水平测量工具,工具结构效度与信度良好。

关键词：定序多项选择概念构造图反应因果关系思维水平