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Study on the Historical Changes,Characteristics,and Implementation Challenges of Uzbekistan’s Language Policy
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作者 DING Xueling HU Jianqiang 《Cultural and Religious Studies》 2025年第5期233-241,共9页
Language policies are of great significance to a nation’s stability,unity,and development.Uzbekistan’s language policies have reflected the political,economic,and cultural dynamics of different periods throughout hi... Language policies are of great significance to a nation’s stability,unity,and development.Uzbekistan’s language policies have reflected the political,economic,and cultural dynamics of different periods throughout historical changes,influencing social structures and ethnic relations.This paper summarizes the characteristics of Uzbekistan’s language policies in different eras:During the Tsarist Russian period,the Russification of language policies hindered the development of local languages;in the Soviet era,policies adopted a dual approach,promoting both Russian and prioritizing ethnic languages;after independence,Uzbekistan established Uzbek as the state language and emphasized foreign language education.The current language policy in Uzbekistan presents a complex landscape:While emphasizing the dominant role of the national language helps preserve its heritage,it may easily spark ethnic and political tensions;promoting pluralism and inclusivity brings benefits but faces challenges in balancing language statuses,resource allocation,management,and communication;modernization efforts encounter difficulties in standardizing dialects and foreign loanwords;and in international exchanges,there is a need to balance relations with global lingua francas.In conclusion,Uzbekistan’s language policies have undergone unique transformations and face numerous challenges.In-depth research is crucial for improving the country’s policies and enhancing China-Uzbekistan cooperation.Proactive measures are needed to address these challenges,ensuring the sustainability of language policies and fostering greater national prosperity. 展开更多
关键词 Uzbekistan language policy historical changes implementation challenges medical diplomacy
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Mechanism and Implementation Panths of Low-Altitude Economy in Promoting Transformation and Upgrading of Tourism Industry in Zhejiang Province
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作者 Zhenzi GUO 《Asian Agricultural Research》 2025年第8期13-15,26,共4页
Taking Zhejiang Province as an example,this paper explores the mechanisms and implementation pathways through which the low-altitude economy drives the transformation and upgrading of the tourism industry.It finds tha... Taking Zhejiang Province as an example,this paper explores the mechanisms and implementation pathways through which the low-altitude economy drives the transformation and upgrading of the tourism industry.It finds that the low-altitude economy can effectively promote the development of high-end and diversified tourism in Zhejiang by innovating tourism formats,optimizing resource allocation,and enhancing tourist experiences.Besides,it analyzes the current development status of the low-altitude economy in Zhejiang and its potential for integration with tourism,revealing specific enabling pathways for tourism transformation,including low-altitude sightseeing,aviation tourism,and low-altitude sports.Finally,it proposes policy recommendations such as strengthening policy support,enhancing infrastructure development,and cultivating market entities.The findings aim to provide theoretical references and practical guidance for the high-quality development of tourism in Zhejiang Province. 展开更多
关键词 LOW-ALtiTUDE ECONOMY Transformation and upgrading of the tourism industry Action MECHANISM implementation path ZHEJIANG Province
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Core issues in the construction and implementation of synergistic Chinese-Western medicine clinical treatment strategies
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作者 LAI Honghao MA Ning +3 位作者 LIU Jiayi ZHAO Weilong PAN Bei GE Long 《World Journal of Integrated Traditional and Western Medicine》 2025年第3期135-144,共10页
The demand for Chinese-Western medicine collaboration has grown significantly,but current integration methods have substantial limitations.This article analyzes core issues in developing and implementing synergistic C... The demand for Chinese-Western medicine collaboration has grown significantly,but current integration methods have substantial limitations.This article analyzes core issues in developing and implementing synergistic Chinese-Western medicine clinical treatment strategies and explores the transformation from traditional integration to genuine synergistic models.We analyzed methodological obstacles in synergistic strategy development through literature review and theoretical analysis,and explored applications of intelligent technology in strategy development.Four core challenges were identified:(1)Treatment timing coordination difficulties caused by different decision-making approaches,with Chinese medicine using syndrome-based assessments and Western medicine relying on standardized measurements;(2)Treatment selection complexities when integrating different types of evidence,lacking frameworks for evaluating and combining diverse evidence sources;(3)Obstacles in incorporating patient preferences systematically,with inadequate assessment methods and unclear integration mechanisms;(4)Implementation barriers in translating synergistic strategies into clinical practice,requiring changes in organizational structures,workflows,and evaluation systems.Large language models(LLMs)and other intelligent technologies offer technical support for addressing these methodological challenges.This article examines current challenges in developing synergistic Chinese-Western medicine clinical strategies,analyzing the shift from traditional integration toward synergistic approaches and identifying four core methodological obstacles.Exploring intelligent technology applications provides insights to inform future research directions and clinical practice development in integrated healthcare delivery. 展开更多
关键词 Integrative Chinese-Western medicine Evidence synthesis Clinical coordination Practice implementation
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Study on the Necessity and Implementation Path of Artificial Intelligence General Education in Vocational Colleges from the Perspective of Core Literacy Cultivation
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作者 Meihua Yuan 《Journal of Contemporary Educational Research》 2025年第10期190-196,共7页
Currently,we have entered the era of artificial intelligence(AI).The rapid development and wide application of AI technology have exerted a profound impact on all fields of society.Against this backdrop,this paper con... Currently,we have entered the era of artificial intelligence(AI).The rapid development and wide application of AI technology have exerted a profound impact on all fields of society.Against this backdrop,this paper conducts an in-depth analysis focusing on general education in AI.First,it expounds the necessity of AI general education in cultivating the core literacy of vocational college students.Then,it puts forward effective implementation paths for such general education.The purpose is to provide valuable references for promoting the reform and innovative development of vocational education. 展开更多
关键词 Vocational colleges Core literacy Artificial intelligence general education implementation path
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Research on the Implementation Path of Integrating MOOC and Blended Learning in Oncology Education
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作者 Wei Wu Ge Yang Manman Xu 《Journal of Contemporary Educational Research》 2025年第6期291-295,共5页
Oncology covers a wide range of knowledge and is more difficult compared to other clinical disciplines.Therefore,it is crucial to seek an efficient teaching method for oncology education.In recent years,China’s inter... Oncology covers a wide range of knowledge and is more difficult compared to other clinical disciplines.Therefore,it is crucial to seek an efficient teaching method for oncology education.In recent years,China’s internet technology has achieved rapid development.Massive Open Online Course(MOOC),a blended learning approach based on internet technology,has strong applicability to medical education.It can not only improve teaching quality but also promote further reform of the discipline.Based on this,our study searched for relevant research at home and abroad and reviewed the implementation path of integrating MOOC and blended learning in oncology education.This provides a theoretical foundation for the innovation of oncology teaching models,improves the level of oncology teaching,and lays a solid foundation for talent reserves in oncology departments. 展开更多
关键词 Massive open online course Blended learning Oncology teaching implementation path Research progress
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The Diversified Implementation of College Students’Career Education from the Perspective of Higher Education Internationalization
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作者 Xinpei Liu 《Journal of Contemporary Educational Research》 2025年第10期120-125,共6页
In the wave of higher education internationalization,college students’career education is faced with problems such as inadequate integration of international elements in teaching content,insufficient depth of interna... In the wave of higher education internationalization,college students’career education is faced with problems such as inadequate integration of international elements in teaching content,insufficient depth of international cooperation in practical links,lack of international professional experience among the teaching staff,and insufficient emphasis on the cultivation of multicultural adaptability in the education model.Based on this,this paper deeply explores the new requirements put forward by internationalization for college students’career education and its diversified implementation paths from the perspective of higher education internationalization.It aims to build a comprehensive and multi-level career education system and improve students’international competitiveness through strategies such as constructing an internationalized curriculum system,expanding international cooperation practice projects,strengthening international exchanges and training for teachers,and integrating multicultural education. 展开更多
关键词 Higher education internationalization Career education Diversified implementation Global competence Cross-cultural ability
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Optimizing AES S-Box Implementation:A SAT-Based Approach with Tower Field Representations
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作者 Jingya Feng Ying Zhao +1 位作者 Tao Ye Wei Feng 《Computers, Materials & Continua》 2025年第4期1515-1531,共17页
The efficient implementation of the Advanced Encryption Standard(AES)is crucial for network data security.This paper presents novel hardware implementations of the AES S-box,a core component,using tower field represen... The efficient implementation of the Advanced Encryption Standard(AES)is crucial for network data security.This paper presents novel hardware implementations of the AES S-box,a core component,using tower field representations and Boolean Satisfiability(SAT)solvers.Our research makes several significant contri-butions to the field.Firstly,we have optimized the GF(24)inversion,achieving a remarkable 31.35%area reduction(15.33 GE)compared to the best known implementations.Secondly,we have enhanced multiplication implementa-tions for transformation matrices using a SAT-method based on local solutions.This approach has yielded notable improvements,such as a 22.22%reduction in area(42.00 GE)for the top transformation matrix in GF((24)2)-type S-box implementation.Furthermore,we have proposed new implementations of GF(((22)2)2)-type and GF((24)2)-type S-boxes,with the GF(((22)2)2)-type demonstrating superior performance.This implementation offers two variants:a small area variant that sets new area records,and a fast variant that establishes new benchmarks in Area-Execution-Time(AET)and energy consumption.Our approach significantly improves upon existing S-box implementations,offering advancements in area,speed,and energy consumption.These optimizations contribute to more efficient and secure AES implementations,potentially enhancing various cryptographic applications in the field of network security. 展开更多
关键词 AES S-box SAT optimization tower field hardware implementation area efficiency energy consumption
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Implementation of school-based mass drug administration of praziquantel in Nigeria:barriers,facilitators and opportunities for improvement
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作者 Obidimma Ezezika Omolola Olorunbiyi +3 位作者 Jenny Gong Olabanji Surakat Jonathan Ogoji Obiageli Nebe 《Global Health Journal》 2025年第2期136-144,共9页
Objective:The World Health Organization recommends annual preventive chemotherapy with a single dose of praziquantel at≥75%treatment coverage,but as of 2021,the national coverage rate in Nigeria among children falls ... Objective:The World Health Organization recommends annual preventive chemotherapy with a single dose of praziquantel at≥75%treatment coverage,but as of 2021,the national coverage rate in Nigeria among children falls below 10%.This qualitative study sought to explore the barriers and facilitators to implementing large-scale praziquantel mass drug administration(MDA)programs for school-aged children in Nigeria to delineate tools and strategies that could improve the scaling-up and effectiveness of school-based praziquantel MDA programs.Methods:An exploratory qualitative study was conducted with stakeholders with experience in MDAs involving praziquantel or related preventive chemotherapy drugs in Nigeria.Through snowball sampling,30 stakeholders with experience in praziquantel school-based MDA in Nigeria were interviewed.An inductive approach was used to generate broad themes based on the barriers and facilitators identified by the key informants.Results:A total of 45 barriers and 36 facilitators were identified and grouped inductively into eight themes:funding and resources,design and composition of praziquantel tablets,knowledge and awareness mobilization,government,nongovernmental organization,and school engagement,data management,logistics,training,and security.Conclusion:This qualitative study reveals a wide range of barriers and facilitators in the MDA of praziquantel in Nigeria and uncovered critical points along the implementation pathway based on the locus of the barriers and facilitators identified.Collaboration with national,international,and non-profit organizations,and drug education through promotional materials,were the most frequently mentioned facilitators of the MDA program.In addition,insufficient program funding,and the complexity of the supply chain were the most cited barriers. 展开更多
关键词 PRAZIQUANTEL Mass drug administration(MDA) SCHISTOSOMIASIS School-aged children(SAC) NIGERIA implementation science
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Barriers and Facilitators to Implementation of Mindfulness in Motion for Firefighters and Emergency Medical Service Providers
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作者 Beth Steinberg Yulia Mulugeta +3 位作者 Catherine Quatman-Yates Maeghan Williams Anvitha Gogineni Maryanna Klatt 《International Journal of Mental Health Promotion》 2025年第9期1237-1264,共28页
Background:Community-based first responders face high levels of workplace stressors that can pro-foundly impact their physical and mental health.Mindfulness-based interventions have shown promise in decreasing stress ... Background:Community-based first responders face high levels of workplace stressors that can pro-foundly impact their physical and mental health.Mindfulness-based interventions have shown promise in decreasing stress and increasing psychological resilience;however,implementation is difficult due to unpredictability of the job,department culture,and generational preferences.The objective of this qualitative study was to identify and enhance understanding of the specific needs and potential barriers and facilitators for the implementation of mindfulness-based programming for community-based first responders.Methods:A phenomenological qualitative study design was used to gain insights into the lived experiences of first responders and elicit perceptions regarding barriers and facilitators for engaging in mindfulness activities.During virtual semi-structured interviews,eleven career firefighters and emergency medical service(EMS)providers offered feedback relative to worksite mindfulness practices,and the use of a stress reduction smartphone application.The Consolidated Framework for Implementation Research was used to guide the analysis relative to barriers and facilitators of implementation success and sustainability.Results:First responders expressed openness to mindfulness-based interventions and a smartphone app that would provide stress reduction content,however,they were adamant that programming needed to be accessible and easily integrated into their workday.They also reinforced that organizational culture and leadership support for their health and well-being were overarching factors essential for implementation success.Conclusions:First responders were supportive of evidence-based mindfulness practices,optimally developed and/or facilitated by someone with intimate knowledge of their unique work environments and challenges.Organizational culture and leadership support were essential for implementation success and sustainability. 展开更多
关键词 MINDFULNESS mental health stress firefighters emergency medical service(EMS)providers implementation barriers and facilitators
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The Implementation Path and Effect Evaluation of Curriculum Ideological and Political Education in Professional Courses in Higher Education Institutions
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作者 Junying Tang 《Journal of Contemporary Educational Research》 2025年第2期32-38,共7页
Under the background of the new era,strengthening curriculum ideological and political construction has become one of the important tasks for colleges and universities to achieve curriculum teaching reform in recent y... Under the background of the new era,strengthening curriculum ideological and political construction has become one of the important tasks for colleges and universities to achieve curriculum teaching reform in recent years.How to subtly and effectively infiltrate the ideological and political ideas of the curriculum in the teaching of specialized courses,and achieve the effect of“salt into taste”is the biggest difficulty in the current construction of curriculum ideological and political education in colleges and universities.Based on this,this paper first analyzes the characteristics of carrying out ideological and political teaching in professional courses in colleges and universities,then expounds on the existing problems and implementation paths of current ideological and political teaching in professional courses in colleges and universities,and finally analyzes its teaching practice results,aiming to further promote the construction and development of ideological and political teaching in colleges and universities and provide some references for peers. 展开更多
关键词 Curriculum ideological and political teaching Colleges and universities Specialized course teaching implementation path
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Research on the Implementation Strategies of Chemistry Science Popularization for Lower Grades in Primary Schools
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作者 Yaping He 《Journal of Contemporary Educational Research》 2025年第10期141-148,共8页
Chemistry science popularization for lower grades(Grades 1-2)in primary schools is an important part of science enlightenment education.However,in practice,it generally faces practical dilemmas such as insufficient co... Chemistry science popularization for lower grades(Grades 1-2)in primary schools is an important part of science enlightenment education.However,in practice,it generally faces practical dilemmas such as insufficient content adaptability,a single implementation method,and a lack of coordination mechanisms.Based on Piaget’s Cognitive Development Theory and the STSE(Science,Technology,Society,Environment)educational concept,this study constructed a four-in-one strategy system of“content development-teaching implementation-collaborative linkage-guarantee support”through literature analysis,action research,and empirical comparison.An empirical study was conducted in two primary schools for one academic year.The results show that this strategy system can increase students’interest in participating in chemistry science popularization by 42 percentage points,the compliance rate of observation ability reaches 85%,and the collaborative participation of families,schools,and society rises to 85%.The core strategies formed in the study,including“age-appropriate content screening,interactive teaching implementation,three-dimensional collaborative promotion,and full-process guarantee support,”provide a replicable practical model for the standardized and efficient development of chemistry science popularization for lower grades in primary schools.They also offer empirical references for fulfilling the requirement of“strengthening the pertinence and effectiveness of science popularization”in the Law of the People’s Republic of China on Popularization of Science and Technology(revised in 2024). 展开更多
关键词 Lower grades in primary schools Chemistry science popularization implementation strategies Science enlightenment Collaborative education
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Implementation strategies of a national standard for comprehensive care in acute care hospitals:An interview study
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作者 Beibei Xiong Christine Stirling +2 位作者 Daniel X.Bailey Paul Prudon Melinda Martin-Khan 《International Journal of Nursing Sciences》 2025年第4期369-378,I0004,共11页
Objective:This study aimed to explore the strategies used by acute care hospitals in implementing a national standard for comprehensive care.Methods:A qualitative descriptive study was conducted with 28 care professio... Objective:This study aimed to explore the strategies used by acute care hospitals in implementing a national standard for comprehensive care.Methods:A qualitative descriptive study was conducted with 28 care professionals(20 nurses,two doctors,and six allied health professionals)recruited from a broad range of Australian acute care hospitals.Data were collected using semi-structured interviews from March to August 2023.The interviews were audio-recorded,transcribed,and thematically analyzed.Results:Strategies for implementing the Comprehensive Care Standard(CCS)vary,even within a health service organization.We identifiedstrategies hospitals used regarding the implementation team and plan,communication,education and training,documentation system,patient care plan,networking,incentives and pressure,feedback,and reflectingand evaluating.Conclusions:This interview study sheds light on the various strategies adopted by hospitals in implementing the CCS,providing a practical foundation to inform implementation efforts both within Australia and internationally. 展开更多
关键词 Coordinated care Health policy Holistic care implementation science Multidisciplinary care Patient-centred care Standard of comprehensive care
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Design and Implementation Strategies for English Reading Teaching in Secondary Vocational Schools from the Perspective of Curriculum Ideology and Politics:Taking an English Reading Class as an Example
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作者 Xiaoqing Cui Wei Liu 《Journal of Contemporary Educational Research》 2025年第2期73-77,共5页
Within the perspective of curriculum-based ideological and political education,this paper takes a secondary vocational English reading class themed“Invention and Innovation”as an example to delve into the process fr... Within the perspective of curriculum-based ideological and political education,this paper takes a secondary vocational English reading class themed“Invention and Innovation”as an example to delve into the process from instructional content design to implementation.In terms of instructional design,the paper highlights key elements.Profoundly,it discusses the strategies for teaching implementation,including the setting of teaching objectives,the selection of reading instructional materials,and the design and advancement of teaching activities.The aim is to effectively integrate ideological and political elements into secondary vocational English reading instruction,with the hope of providing useful references and insights for the teaching of English reading in secondary vocational education. 展开更多
关键词 Curriculum ideology and politics English teaching in secondary vocational schools Reading instructional design implementation strategies
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Multi-layer controlled remote implementation of partially unknown single-qudit operations
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作者 Siyi Li Songya Ma Si Jin 《Communications in Theoretical Physics》 2025年第2期52-63,共12页
Our concern is to investigate controlled remote implementation of partially unknown operations with multiple layers.We first propose a scheme to realize the remote implementation of singlequbit operations belonging to... Our concern is to investigate controlled remote implementation of partially unknown operations with multiple layers.We first propose a scheme to realize the remote implementation of singlequbit operations belonging to the restricted sets.Then,the proposed scheme is extended to the case of single-qudit operations.As long as the controller and the higher-layer senders consent,the receiver can restore the desired state remotely operated by the sender.It is worth mentioning that the recovery operation is deduced by general formulas which clearly reveal the relationship with the measurement outcomes.For the sake of clarity,two specific examples with two levels are given respectively.In addition,we discuss the influence of amplitude-damping noise and utilize weak measurement and measurement reversal to effectively resist noise. 展开更多
关键词 controlled remote implementation of quantum operation multiple layers recovery operation amplitude-damping noise weak measurement and measurement reversal
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ANCHORING RCEP IN OPENNESS China’s unilateral market opening is accelerating high-level implementation of RCEP
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作者 China Institute for Reform and Development(CIRD)research team Chi Fulin +3 位作者 Yang Rui Kuang Xianming Wang Yuehong Jin Ye 《China Report ASEAN》 2025年第5期60-61,共2页
The Regional Comprehensive Economic Partnership(RCEP)is a significant achievement in terms of Asia’s exploration and efforts toward regional economic integration.It integrates regional economic and trade cooperation ... The Regional Comprehensive Economic Partnership(RCEP)is a significant achievement in terms of Asia’s exploration and efforts toward regional economic integration.It integrates regional economic and trade cooperation mechanisms,demonstrates the determination and capabilities of Asian countries to promote open cooperation. 展开更多
关键词 unilateral market opening high level implementation OPENNESS economic trade cooperation mechanismsdemonstrates regional comprehensive economic partnership rcep regional economic partnership RCEP ANCHORING
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N掺杂TiO_(2)-Fe_(2)O_(3)/C光催化剂的制备及其光催化降解性研究 被引量:2
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作者 李洁 张佳 +1 位作者 陈连喜 吕博 《化工新型材料》 北大核心 2025年第2期210-214,共5页
为寻找一种简便且具有良好孔结构的光催化剂合成路径,提升并拓宽其光催化应用范围,通过将N掺杂的双金属Ti-Fe MOFs在500℃的空气气氛中直接热解制备N掺杂TiO_(2)-Fe_(2)O_(3)/C纳米结构。获得的产物显示出独特的树枝状结构,且具有较大... 为寻找一种简便且具有良好孔结构的光催化剂合成路径,提升并拓宽其光催化应用范围,通过将N掺杂的双金属Ti-Fe MOFs在500℃的空气气氛中直接热解制备N掺杂TiO_(2)-Fe_(2)O_(3)/C纳米结构。获得的产物显示出独特的树枝状结构,且具有较大比表面积和良好的介孔结构。同时,红外光谱(FT-IR)和X射线光电子能谱(XPS)结果证实,在空气条件下煅烧后,衍生物仍保留了N和C成分。此外,将制备的N掺杂树枝状双金属结构多孔材料作为光催化剂用于降解亚甲基蓝(MB)染料。结果表明:N掺杂TiO_(2)-Fe_(2)O_(3)/C比N掺杂非Fe参与的TiO_(2)/C和非N非Fe掺杂TiO_(2)/C具有更好的光催化性能,且N掺杂TiO_(2)-Fe_(2)O_(3)/C对MB染料的有效降解率达到81%。 展开更多
关键词 ti基-MOFs Fe基-MOFs tiO_(2)-Fe_(2)O_(3)/C N掺杂 光催化
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E690海工钢中复合碳化物(Nb,Ti,Mo,V)C在奥氏体中的沉淀析出行为研究 被引量:2
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作者 姚娜 兴超 《轧钢》 北大核心 2025年第1期29-34,共6页
海工钢中第二相析出物的类型、析出量、尺寸大小、形貌特征和分布对其综合性能有较大影响。基于复合析出相在奥氏体中的固溶析出计算和经典析出动力学理论,系统研究了复合析出相在E690海工钢奥氏体中的析出行为,并探讨了轧制过程中奥氏... 海工钢中第二相析出物的类型、析出量、尺寸大小、形貌特征和分布对其综合性能有较大影响。基于复合析出相在奥氏体中的固溶析出计算和经典析出动力学理论,系统研究了复合析出相在E690海工钢奥氏体中的析出行为,并探讨了轧制过程中奥氏体形变储能对复合析出相在奥氏体中析出动力学的影响。结果表明:E690海工钢中MC碳化物在1184.5℃开始析出,主要为(Nb,Ti,Mo,V)C;在奥氏体相区,MC碳化物最大析出质量分数为0.0574%,最大析出体积分数为0.000727%,主要为NbC和TiC;复合碳化物(Nb,Ti,Mo,V)C在不同形核机制下的临界形核尺寸随温度的降低而减小,发生晶界形核的临界形核功小于位错形核和均匀形核,(Nb,Ti,Mo,V)C最先在晶界形核,发生均匀形核、晶界形核和位错形核时的最快沉淀析出温度分别为820.5、908.7、818.3℃;随着形变储能的增加,复合碳化物(Nb,Ti,Mo,V)C相对形核率呈增加趋势,析出孕育期明显缩短,复合析出相的沉淀强化作用增强。 展开更多
关键词 E690海工钢 (Nb ti Mo V)C 析出动力学 形核机制 形变储能
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MOFs衍生多功能TiO_(2)的制备及其光催化应用进展
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作者 李洁 张佳 +1 位作者 陈连喜 李小鹏 《化工新型材料》 北大核心 2025年第5期65-68,73,共5页
TiO_(2)是众所周知的功能性无机半导体光催化材料,于紫外光下在解决当今面临的特殊环境问题方面具有优异的性能。然而,TiO_(2)由于其宽带隙(3.1~3.4eV),只能吸收一小部分的太阳光光谱(λ<387nm),因此,为了将TiO_(2)的光学响应转移到... TiO_(2)是众所周知的功能性无机半导体光催化材料,于紫外光下在解决当今面临的特殊环境问题方面具有优异的性能。然而,TiO_(2)由于其宽带隙(3.1~3.4eV),只能吸收一小部分的太阳光光谱(λ<387nm),因此,为了将TiO_(2)的光学响应转移到可见光范围内,提高光催化活性,改善物质与光催化剂之间的相互作用以及活性位点等问题仍然是需要解决的挑战。简要介绍了TiO_(2)基材料的研究现状;重点阐述了MOF衍生功能性TiO_(2)的合成及光催化应用。总结了在改善Ti基新型光催化复合材料结构性能等方面的有效途径和方法,并分析了现存问题和挑战。 展开更多
关键词 金属有机框架 N掺杂tiO_(2) ti基双金属MOF 光催化
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原位自生TiB_(w)/Ti网状复合材料的热变形行为
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作者 贾建波 穆利双 +2 位作者 赵留洋 刘宝宝 徐岩 《中国有色金属学报》 北大核心 2025年第8期2772-2787,共16页
通过热压缩等温实验对放电等离子烧结原位自生TiB_(w)/Ti复合材料在变形温度650~800℃、应变速率0.01~5 s^(-1)条件下的热变形行为进行了研究,并建立了复合材料的本构方程,获得了Zener-Hollomon参数对微观组织演变的影响规律。结果表明:... 通过热压缩等温实验对放电等离子烧结原位自生TiB_(w)/Ti复合材料在变形温度650~800℃、应变速率0.01~5 s^(-1)条件下的热变形行为进行了研究,并建立了复合材料的本构方程,获得了Zener-Hollomon参数对微观组织演变的影响规律。结果表明:TiB_(w)/Ti复合材料的峰值应力随温度降低和应变速率升高而升高。不同ln Z值对应不同的组织形貌特征,当ln Z为高值(≥42.50)时,局部塑性流动区是主要的微观组织特征,动态再结晶程度低,再结晶晶粒平均尺寸小于1.40μm。当ln Z为中值(34.29~38.50)时,动态再结晶显著,再结晶晶粒平均尺寸为1.53~2.91μm,且随ln Z值减小,增强颗粒长径比增大,偏聚现象改善,位错密度降低,再结晶程度提高。当ln Z为低值(≤32.48)时,再结晶晶粒明显粗化,平均晶粒尺寸大于3.18μm。 展开更多
关键词 tiB_(w)/ti复合材料 原位自生 热变形行为 ZENER-HOLLOMON参数 微观组织
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原位合成(TiC+Al_(3)Ti)增强铝基复合材料组织及性能研究
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作者 庄伟彬 曹庆 +3 位作者 覃龙健 孙川淼 金忠贵 刘敬福 《功能材料》 北大核心 2025年第7期7140-7145,共6页
采用原位合成方法,制备了1%、3%、5%(质量分数)(TiC+Al_(3)Ti)/6061铝基复合材料,研究了双相增强体含量对复合材料组织及性能的影响。在复合材料中,TiC颗粒分布于晶界处,而Al_(3)Ti相呈短棒状、分布于晶粒内部。复合材料的晶粒尺寸随着(... 采用原位合成方法,制备了1%、3%、5%(质量分数)(TiC+Al_(3)Ti)/6061铝基复合材料,研究了双相增强体含量对复合材料组织及性能的影响。在复合材料中,TiC颗粒分布于晶界处,而Al_(3)Ti相呈短棒状、分布于晶粒内部。复合材料的晶粒尺寸随着(TiC+Al_(3)Ti)含量的增加而逐渐减小,当(TiC+Al_(3)Ti)含量为5%(质量分数)时,晶粒细化效果最为显著,此时复合材料平均晶粒尺寸为43.02μm。随着(TiC+Al_(3)Ti)含量的增加,铸态复合材料布氏硬度、抗拉强度、屈服强度以及最大抗压载荷逐渐增加,5%(质量分数)(TiC+Al_(3)Ti)/6061复合材料的各项力学性能最高,其值分别为104.57 HB、322.19 MPa、186.27 MPa、457.13 MPa。 展开更多
关键词 铝基复合材料 原位合成 (tiC+Al_(3)ti) 显微组织 力学性能
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