期刊文献+
任意字段
题名或关键词
题名
关键词
摘要
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息
共找到24篇文章
< 1 2 >
每页显示 20 50 100
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
显示方式：
Ultrahigh-Strength Soft-Magnetic NiFeCoAl Multi-Principal Element Alloys Enabled by Multiscale Heterostructure Design 认领 引用
1
作者 Nairan Wang Peijian Shi +4 位作者 Wenqiang Wu Hao Wu Yong Zhao Tianlong Zhang Yan Wang 《Rare Metals》 SCIE EI CAS CSCD 2026年第4期421-432,共12页
Soft-magnetic materials(SMMs)are indispensable for electrification and sustainable energy systems,yet their inherent mechanical fragility fundamentally limits applications under severe mechanical stresses.Enhancing th... Soft-magnetic materials(SMMs)are indispensable for electrification and sustainable energy systems,yet their inherent mechanical fragility fundamentally limits applications under severe mechanical stresses.Enhancing the yield strength of SMMs is essential to prevent the degradation in magnetic performance and failure from plastic deformation,but conventional SMMs(e.g.,Fe-Co alloys and metallic glasses)struggle to surpass 1GPa in strength without sacrificing ductility or soft-magnetic properties.Here,we pioneer a face-centered cubic type Ni40Fe30Co20Al10 multi-principal element alloy(MPEA)engineered with a multi-scale heterogeneous microstructure,achieving a nearly triple increase in yield strength(1103 MPa)while retaining16%elongation and excellent soft-magnetic response.This is realized through precipitation of coherent L12 nanoparticles(~20 nm in diameter,~13 nm in spacing)during thermomechanical processing,which simultaneously impedes dislocation glide and minimizes domain wall pinning.Changes in magnetic exchange interaction and nanoparticle-induced matrix magnetic moment slightly influence the saturation magnetic induction.Our strategy resolves the long-standing trade-off between mechanical robustness and soft-magnetic performance,positioning such MPEAs as promising candidates for heavy-load electromechanical systems. 展开更多
关键词 heterostructures mechanical properties multi‑principal element alloy Ni‑Fe‑Co‑Al soft‑magnetic properties
暂未订购 下载PDF
Unveiling Solidification Mechanism and Balanced Strength-Ductility Synergy of Eutectic High-Entropy Alloys 认领 引用 被引量：1
2
作者 Yi Qin Yi Li +13 位作者 Xin Jiang Junfeng Duan Ziyu Peng Jingran Huang Yifan Lin Xuwei Qin Bodong Tan Yiheng Ruan Xiaohan Wang Hongxuan Xu Honglei Wang Tianlong Zhang Peijian Shi Yunbo Zhong 《Rare Metals》 SCIE EI CAS CSCD 2026年第4期330-340,共11页
Eutectic high-entropy alloys(EHEAs)have attracted significant attention due to their balanced mechanical properties and promising applications.Nonetheless,the correlation between the solidification mechanism of eutect... Eutectic high-entropy alloys(EHEAs)have attracted significant attention due to their balanced mechanical properties and promising applications.Nonetheless,the correlation between the solidification mechanism of eutectic microstructures and their mechanical properties remains elusive.In this study,we report an Al1.19CoFeNi2.86 EHEA composed of typical regular and irregular lamellar colonies.Both colonies exhibit a dual-phase structure containing face-centered cubic(FCC)and bodycentered cubic(BCC)phases,which collectively induce balanced as-cast strength-ductility synergy.Tensile experiments reveal an as-cast yield strength of~618 MPa,an ultimate tensile strength of~1015 MPa,and a fracture elongation of~9.7%.Through multiscale probing of deformation processes,we unveil that the mixed,regular and irregular,eutectic lamellar microstructure is critical for balancing strength and ductility,stemming from persistent hetero-deformation-induced strain hardening spanning across a wide strain scope.The hybrid structure of regular and irregular lamellar eutectics arises from solute diffusion and associated thermophysical factors during solidification.These findings provide insights into clarifying the structure-property correlation in as-cast EHEAs as well as optimizing their properties. 展开更多
关键词 balanced mechanical properties deformation processes eutectic high-entropy alloys regular and irregular lamellar colonies solidification mechanism
暂未订购 下载PDF
High temperature oxidation behavior at 1250℃:A new multilayer modified silicide coating design strategy on niobium alloys 认领 引用 被引量：6
3
作者 Shuqi Wang Zhiyun Ye +7 位作者 Yulin Ge Yongchun Zou Tianlong Zhang Xinrui Zhao Mengjie Wang Ci Song Yaming Wang Yu Zhou 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2025年第7期159-169,共11页
Silicide coatings have proven to be promising for improving the high-temperature oxidation resistance of niobium alloy.However,the long-term protective property of single silicide coating remains a long-time endeavor ... Silicide coatings have proven to be promising for improving the high-temperature oxidation resistance of niobium alloy.However,the long-term protective property of single silicide coating remains a long-time endeavor due to the deficiency of oxygen-consuming phases,as well as the self-healing ability of the protective layer.Herein,a silicide-based composite coating is constructed on niobium alloy by incor-poration of nano-SiC particles for enhancing the high-temperature oxidation resistance.Isothermal oxi-dation results at 1250℃ for 50 h indicate that NbSi2/Nb2O5-SiO2/SiC multilayer coated sample with a low mass gain of 2.49 mg/cm2 shows an improved oxidation resistance compared with NbSi2 coating(6.49 mg/cm2).The enhanced high-temperature antioxidant performance of NbSi2/Nb2O5-SiO2/SiC multi-layer coating is mainly attributed to the formation of the protective SiO2 self-healing film and the high-temperature diffusion behavior of NbSi2/substrate. 展开更多
关键词 Niobium alloys Silicide-based coating High-temperature oxidation resistance nano-SiC Liquid-plasma-assisted particle deposition and sintering
暂未订购 下载PDF
Heterogeneous precipitate microstructure in titanium alloys for simultaneous improvement of strength and ductility 认领 引用 被引量：4
4
作者 Mengyuan Hao Pei Li +8 位作者 Xuexiong Li Tianlong Zhang Dong Wang Qiaoyan Sun Libin Liu Jinshan Li Yuyou Cui Rui Yang Dongsheng Xu 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2022年第29期150-163,共14页
The design of alloys with simultaneous high strength and high ductility is still a difficult challenge.Here,we propose a new approach to designing multi-phase alloys with a synergistic combination of strength and duct... The design of alloys with simultaneous high strength and high ductility is still a difficult challenge.Here,we propose a new approach to designing multi-phase alloys with a synergistic combination of strength and ductility by engineering heterogeneous precipitate microstructures through the activation of different transformation mechanisms.Using a two-phase titanium alloy as an example,phase field simulations are carried out firstly to design heat treatment schedules that involve both conventional nucleation and growth and non-conventional pseudospinodal decomposition mechanisms,and the calculated microstructures have been evaluated by crystal plasticity finite element modeling.According to simulations,we then set a two-step heat treatment to produce bimodalα+βmicrostructure in Ti-10V-2Fe-3Al.Further mechanical testing shows that the ductility of the alloy is increased by~50%and the strength is increased by~10%as compared to its unimodal counterpart.Our work may provide a general way to improve the mechanical properties of alloys through multiscale microstructure design. 展开更多
关键词 Titanium alloys Phase field simulation Crystal plasticity finite element Two-step aging Pseudospinodal decomposition mechanisms Multiscale heterogeneous microstructure
暂未订购 下载PDF
Design of titanium alloys by additive manufacturing:A critical review 认领 引用 被引量：27
5
作者 Tianlong Zhang Chain-Tsuan Liu 《Advanced Powder Materials》 2022年第1期3-13,共11页
Additive manufacturing(AM)is an innovative technology that creates objects with a complex geometry layer-by-layer,and it has rapidly prospered in manufacturing metallic parts for structural and functional applications... Additive manufacturing(AM)is an innovative technology that creates objects with a complex geometry layer-by-layer,and it has rapidly prospered in manufacturing metallic parts for structural and functional applications.Recent literatures have investigated the effect of different AM technologies on the microstructure evolution of titanium alloys.However,metal AM has mostly been regarded only as a shaping technology for near-net-shape manufacturing.A huge advantage of AM in alloy design and treatments has been largely overlooked at the present time.In this paper,we systematically reviewed the interaction of AM processes and different Ti-alloys,as well as the possible ways for mechanical property enhancements.On the one hand,the complex thermal histories caused by AM influence the phase transformation of Ti-alloys.On the other hand,the unique thermal and processing features of AM provide ways and opportunities to design new Ti-alloys with unachievable microstructures and properties by conventional methods.The aim of this paper is thus to provide a new perspective on the relationship between the AM process and alloy design,which is to consider AM as an irreplaceable material treating and design method.Only an integrated consideration of both AM process and alloy design can successfully achieve materials with superior properties for applications in the future industries. 展开更多
关键词 Additive manufacturing Titanium alloy Alloy design Heterogeneous microstructure Concentration modulation
暂未订购 下载PDF
A new oil spill detection algorithm based on Dempster-Shafer evidence theory 认领 引用 被引量：1
6
作者 Tianlong ZHANG Jie GUO +3 位作者 Chenqi XU Xi ZHANG Chuanyuan WANG Baoquan LI 《Journal of Oceanology and Limnology》 SCIE CAS CSCD 2022年第2期456-469,共14页
Features of oil spills and look-alikes in polarimetric synthetic aperture radar(SAR)images always play an important role in oil spill detection.Many oil spill detection algorithms have been implemented based on these ... Features of oil spills and look-alikes in polarimetric synthetic aperture radar(SAR)images always play an important role in oil spill detection.Many oil spill detection algorithms have been implemented based on these features.Although environmental factors such as wind speed are important to distinguish oil spills and look-alikes,some oil spill detection algorithms do not consider the environmental factors.To distinguish oil spills and look-alikes more accurately based on environmental factors and image features,a new oil spill detection algorithm based on Dempster-Shafer evidence theory was proposed.The process of oil spill detection taking account of environmental factors was modeled using the subjective Bayesian model.The Faster-region convolutional neural networks(RCNN)model was used for oil spill detection based on the convolution features.The detection results of the two models were fused at decision level using Dempster-Shafer evidence theory.The establishment and test of the proposed algorithm were completed based on our oil spill and look-alike sample database that contains 1798 image samples and environmental information records related to the image samples.The analysis and evaluation of the proposed algorithm shows a good ability to detect oil spills at a higher detection rate,with an identifi cation rate greater than 75%and a false alarm rate lower than 19%from experiments.A total of 12 oil spill SAR images were collected for the validation and evaluation of the proposed algorithm.The evaluation result shows that the proposed algorithm has a good performance on detecting oil spills with an overall detection rate greater than 70%. 展开更多
关键词 synthetic aperture radar(SAR)data oil spill detection subjective Bayesian Faster-region convolutional neural networks(RCNN) Dempster-Shafer evidence theory
暂未订购 下载PDF
“教育-准入-监管”三位一体实验室安全管理模式——以西北大学化学国家级实验教学示范中心为例 认领 引用 被引量：2
7
作者 周亚倩 赵春欣 +4 位作者 张丹 刘哲 张天龙 崔斌 李延 《大学化学》 CAS 2025年第11期346-353,共8页
西北大学化学国家级实验教学示范中心以“教育奠基、准入把关、监管护航”为核心理念,创新构建了“教育-准入-监管”三位一体的实验室安全管理体系,实现了实验室安全管理从被动应对到主动预防的转型升级。安全教育奠定了扎实的知识基础... 西北大学化学国家级实验教学示范中心以“教育奠基、准入把关、监管护航”为核心理念,创新构建了“教育-准入-监管”三位一体的实验室安全管理体系,实现了实验室安全管理从被动应对到主动预防的转型升级。安全教育奠定了扎实的知识基础,准入制度明确了严格的准入要求,实时监管则形成了全天候的安全防护网。这一模式不仅实现了安全管理效能的全面提升,更通过持续的教育浸润和智能化的制度约束,培育了师生的安全文化认同,为高校实验室安全管理提供了可复制、可推广的模式,有力支撑了教学科研工作的高质量发展。 展开更多
关键词 实验室安全 安全教育 准入制度 管理模式
暂未订购 下载PDF
A novel strategy for quantitative analysis of soil pH via laser-induced breakdown spectroscopy coupled with random forest 认领 引用 被引量：2
8
作者 Mingjing ZHAO Chunhua YAN +4 位作者 Yaozhou FENG Jia XUE Hongsheng TANG Tianlong ZHANG Hua LI 《Plasma Science and Technology》 SCIE EI CAS CSCD 2020年第7期21-27,共7页
pH is one of the significant properties of soil,and is closely related to the decomposition of soil organic matter,anion-cation balance,growth of plants and many other soil processes.In the present work,laser-induced ... pH is one of the significant properties of soil,and is closely related to the decomposition of soil organic matter,anion-cation balance,growth of plants and many other soil processes.In the present work,laser-induced breakdown spectroscopy(LIBS) technique coupled with random forest(RF) was proposed to quantify the pH of soil.First,LIBS spectra of soil was collected,and some common elements in soil were identified based on the National Institute of Science and Technology database.Then,in order to obtain a better predictive result,the influence of different input variables(full spectrum,different spectral ranges,the intensity of characteristic bands and characteristic lines) on the predictive performance of RF calibration model was explored with the evaluation indicators of root mean square error(RMSE) and coefficient of determination(R2),the characteristic bands of four elements(AI,Ca,Mg and Si) were determined as the optimal input variables.Finally,the predictive performance of RF calibration model was compared with partial least squares calibration model with the optimal input variables and model parameters,and RF calibration model showed a better predictive performance,and the four evaluation indicators of R_p^2,RMSEP,mean absolute error and mean relative error were 0.9687,0.1285,0.1114 and 0.0136,respectively.It indicates that LIBS technique coupled with RF algorithm is an effective method for pH determination of soil. 展开更多
关键词 laser-induced breakdown spectroscopy(LIBS) random forest soil pH quantitative analysis
暂未订购 下载PDF
Variant selection map of external load during Ni4Ti3 precipitation in nitinol:a theoretical and phase field study 认领 引用 被引量：1
9
作者 Xuewei Zhou Tianlong Zhang +2 位作者 Li Cheng Xusheng Yang Jiaming Zhu 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2024年第7期19-28,共10页
The morphology of Ni4Ti3 precipitates is important in tuning the martensitic transformation(MT)behavior and mechanical properties of nitinol.Constrained ageing is effective in engineering the morphology of Ni_(4... The morphology of Ni4Ti3 precipitates is important in tuning the martensitic transformation(MT)behavior and mechanical properties of nitinol.Constrained ageing is effective in engineering the morphology of Ni4Ti3 precipitates due to the variant selection effect of external load which is still lacking.In this work,maps of variant selection effect of external load applied along all crystallographic directions are obtained by using a combination of theoretical analyses and phase field simulations.It is found that maps produced by uniaxial tension and uniaxial compression are quite different.The number and types of Ni4Ti3 variants preferred by external load vary as the loading direction changes.Moreover,factors influencing the strength of variant selection effect are discovered.This work provides insights on understanding the Ni4Ti3 precipitation process and sheds light on the engineering of morphology of Ni4Ti3 precipitates for desired mechanical and functional properties. 展开更多
关键词 Ni4Ti3 Variant selection NiTi alloy Phase field model Precipitation morphology
暂未订购 下载PDF
人工智能时代背景下的仪器分析科教融合模式探索 认领 引用 被引量：11
10
作者 张天龙 张容玲 +2 位作者 汤宏胜 李延 李华 《大学化学》 CAS 2024年第8期365-374,共10页
针对传统仪器分析方法在应对更复杂的化学样品、更微量的化学分析和更精准的化学测量要求时所遇到的挑战,本文提出了一种将人工智能融合入科学仪器分析的应用研究和教学实践的策略。通过采用科学研究新范式,探讨分析仪器的研发与应用,... 针对传统仪器分析方法在应对更复杂的化学样品、更微量的化学分析和更精准的化学测量要求时所遇到的挑战,本文提出了一种将人工智能融合入科学仪器分析的应用研究和教学实践的策略。通过采用科学研究新范式,探讨分析仪器的研发与应用,在科教融合视域下,借助人工智能新方法提升实验教学效果,并实现虚拟仿真实验、智能实验数据分析和多元化智能评价等方面的融合。通过运用人工智能新技术,紧扣时代发展趋势,培养具备全面科学素养、创新能力和社会责任感的高素质人才,进而落实高等教育立德树人根本任务。 展开更多
关键词 人工智能 仪器分析 科教融合
暂未订购 下载PDF
线上线下深度融合的分析化学实验教学新模式探索--以“维生素C饮料中抗坏血酸含量的测定”为例 认领 引用 被引量：7
11
作者 张天龙 冯婷 +2 位作者 汤宏胜 李延 李华 《大学化学》 CAS 2022年第4期119-124,共6页
为了提高实验课程教学效果,提升学生的学习兴趣,培养学生的科学探索精神,充分利用线上教学平台辅助分析化学实验教学。以“维生素C饮料中抗坏血酸含量的测定”实验为例,建立线上线下深度融合的实验课教学模式,优化整个实验教学过程,记... 为了提高实验课程教学效果,提升学生的学习兴趣,培养学生的科学探索精神,充分利用线上教学平台辅助分析化学实验教学。以“维生素C饮料中抗坏血酸含量的测定”实验为例,建立线上线下深度融合的实验课教学模式,优化整个实验教学过程,记录学生的学习过程,改进实验成绩评价方式。该模式可以激发学生的实验热情,使学生的学习由被动变主动,满足学生个性化的学习需求,还有助于培养学生的严谨的科学态度、安全环保意识和实践创新能力,从而实现创新型人才培养。 展开更多
关键词 化学实验教学模式 自主性 创新性
暂未订购 下载PDF
基于Raman光谱的3,5-二氨基-1,2,4-三唑(DAT)合成反应在线监测与反应机理探究——推荐一个仪器分析综合实验 认领 引用 被引量：3
12
作者 张天龙 张容玲 +2 位作者 汤宏胜 李延 李华 《大学化学》 CAS 2024年第6期303-311,共9页
本实验介绍了一个仪器分析综合性实验——基于Raman光谱的3,5-二氨基-1,2,4-三唑(DAT)合成的在线监测与反应机理探究。该实验是一个科研转化的仪器分析综合实验,内容包括DAT的合成、基于Raman光谱的合成反应过程在线监测以及合成反应机... 本实验介绍了一个仪器分析综合性实验——基于Raman光谱的3,5-二氨基-1,2,4-三唑(DAT)合成的在线监测与反应机理探究。该实验是一个科研转化的仪器分析综合实验,内容包括DAT的合成、基于Raman光谱的合成反应过程在线监测以及合成反应机理解析。在实验中,采用化学计量学方法对Raman光谱数据进行处理和分析,以更深入地理解合成反应的机理。通过本实验,可以巩固学生的化学专业知识,提高学生的综合实验操作技能,激发学生对科学研究的兴趣,培养学生的科研探究能力。 展开更多
关键词 拉曼光谱 在线监测 合成反应机理 综合实验
暂未订购 下载PDF
基于STEM教学理念的分析化学实验教学新模式探索--以“自来水硬度测定”为例 认领 引用 被引量：4
13
作者 汤宏胜 冯婷 +2 位作者 张天龙 李延 李华 《大学化学》 CAS 2022年第4期30-34,共5页
STEM是一种集科学、技术、工程、数学多学科融合的项目式教育理念,旨在通过融合多学科知识完成项目目标,从而培养学生提出问题、分析问题以及解决问题的能力,进而激发学生的科学探索精神和创新思维能力,已经成为当前国际教育研究和改革... STEM是一种集科学、技术、工程、数学多学科融合的项目式教育理念,旨在通过融合多学科知识完成项目目标,从而培养学生提出问题、分析问题以及解决问题的能力,进而激发学生的科学探索精神和创新思维能力,已经成为当前国际教育研究和改革的热点。本文将STEM教育理念引入分析化学实验教学过程中,探索发展分析化学实验课程教学新模式。倡导以学生为中心、以真实问题为牵引,学生以相关课程理论为线索,自主完成实验方案设计、实验过程、实验结果分析等一系列分析化学实验过程,从而培养学生的科学探索与实践能力。主要从课程内容、教学方法以及考核方式等三个方面来探索分析化学实验教学新模式,进而提高分析化学实验的教学质量和学生的学习兴趣和科学素养。 展开更多
关键词 分析化学实验 STEM教育理念 科学素养 创新性
暂未订购 下载PDF
激光诱导击穿光谱(LIBS)分析虚拟仿真实验 认领 引用 被引量：2
14
作者 张天龙 周嘉俊 +3 位作者 汤宏胜 宁晓辉 李延 李华 《大学化学》 CAS 2024年第6期295-302,共8页
虚拟仿真实验作为大型仪器分析实验教学模式的新兴趋势,有效地将虚拟仿真技术与实物仪器教学相结合,最大限度地提升了学生对于大型仪器分析的综合应用能力。本文以激光诱导击穿光谱(LIBS)虚拟仿真实验系统为例,完整地模拟了LIBS系统的... 虚拟仿真实验作为大型仪器分析实验教学模式的新兴趋势,有效地将虚拟仿真技术与实物仪器教学相结合,最大限度地提升了学生对于大型仪器分析的综合应用能力。本文以激光诱导击穿光谱(LIBS)虚拟仿真实验系统为例,完整地模拟了LIBS系统的样品处理、光谱采集、定性分析和定量分析等实际实验场景,通过虚实结合实验教学模式对实验过程进行实时跟踪与综合考评。该实验有助于提高学生自主探究能力和创新意识,培养具有独立思考与实践能力的拔尖人才。 展开更多
关键词 虚拟仿真实验 激光诱导击穿光谱 仪器分析实验 自主性 创造性
暂未订购 下载PDF
Reversible redox-controlled semiaza-bambusuril chloride channels for targeted cancer therapy 认领 引用
15
作者 Feihu Yang Dingcheng Zhu +9 位作者 Zherui Zhang Lei He Tianlong Zhang Wang Liu Shengda Liu Sheng Bao Jiayun Xu Tengfei Yan Ofer Reany Junqiu Liu 《Science China Chemistry》 SCIE EI CAS CSCD 2026年第7期3875-3887,共13页
Artificial ion transporters offer promising avenues for therapeutic intervention by disrupting ionic homeostasis in cancer cells.Herein,we report the design,synthesis,and biological evaluation of a novel class of redo... Artificial ion transporters offer promising avenues for therapeutic intervention by disrupting ionic homeostasis in cancer cells.Herein,we report the design,synthesis,and biological evaluation of a novel class of redox-switchable chloride channels based on selenide-containing semiaza-bambusurils.These macrocyclic compounds exhibit reversible transmembrane chloride transport activity modulated by the oxidation state of selenium side chains,enabling precise control over ion flux in response to cellular redox conditions.The reduced selenide form facilitates efficient H+/Cl-symport across lipid bilayers,thereby inducing apoptosis and inhibiting autophagy in cancer cells.Oxidation to selenoxide suppresses transport activity due to increased hydrophilicity,which is restored upon reduction by intracellular glutathione(GSH),demonstrating a dynamic ON/OFF switching mechanism.Single-channel conductance studies confirm unimolecular channel formation,and in vitro assays reveal potent cytotoxicity against multiple cancer cell lines.Cell-intrinsic mechanism studies have revealed an unusual,ultrafast form of cancer cell death induced by perturbation of intracellular chloride concentrations,leading to apoptotic cell death and the inhibition of autophagy.In vivo experiments using U87MG tumor-bearing mice show significant tumor growth inhibition with minimal systemic toxicity.This work represents the first example of a bambusuril-based artificial ion channel with reversible redox control and in vivo efficacy,offering a powerful platform for adaptive,targeted cancer therapies. 展开更多
关键词 artificial ion channels redox-responsive transport semiaza-bambusurils chloride transport targeted cancer therapy
暂未订购 下载PDF
点石成色:敦煌壁画的彩色世界 认领 引用
16
作者 张天龙 张鑫媛 +3 位作者 赵星 汤宏胜 李延 李华 《大学化学》 CAS 2024年第6期238-245,共8页
敦煌壁画,作为中国古代艺术的瑰宝,是一个丰富的历史、文化、艺术和宗教文化遗产宝库,其价值不可估量。这些壁画所用的颜料,皆为天然矿物精心挑选而成,它们为敦煌壁画带来了独一无二的色彩与质感。深入理解这些颜料的特性,有助于我们更... 敦煌壁画,作为中国古代艺术的瑰宝,是一个丰富的历史、文化、艺术和宗教文化遗产宝库,其价值不可估量。这些壁画所用的颜料,皆为天然矿物精心挑选而成,它们为敦煌壁画带来了独一无二的色彩与质感。深入理解这些颜料的特性,有助于我们更好地欣赏艺术、文化和历史的深厚底蕴,也是壁画保护与修复的基础。本文采用生动拟人化的叙述方式,通俗易懂地描绘了莫高窟壁画的色彩来源,重点阐述了常用典型的矿物颜料及其来源,旨在促进壁画的保护工作,以及文化遗产的普及、宣传和传承。 展开更多
关键词 敦煌壁画 矿物颜料 科普 文物保护
暂未订购 下载PDF
以梦为马,诗“酒”趁年华 认领 引用
17
作者 张天龙 宋晨佳 +3 位作者 赵文敏 汤宏胜 李延 李华 《大学化学》 CAS 2024年第9期48-54,共7页
酒,乃天地之精华,文化之载体,品一杯佳酿,如同品一段历史,品一份人生。白酒在各种场合中发挥着重要作用,它不仅仅是一种饮品,还寄托着人们对美好生活的向往和追求。本文采用生动形象的对话形式,通俗易懂地描述了白酒酿制的五个主要过程... 酒,乃天地之精华,文化之载体,品一杯佳酿,如同品一段历史,品一份人生。白酒在各种场合中发挥着重要作用,它不仅仅是一种饮品,还寄托着人们对美好生活的向往和追求。本文采用生动形象的对话形式,通俗易懂地描述了白酒酿制的五个主要过程——选料、糖化、发酵、蒸馏和陈酿,重点介绍了其中的主要化学成分以及酿制过程中的化学反应,白酒的酿造过程体现了匠心独运的精神以及酒文化的博大精深。通过品味白酒,可以更好地感悟人生的哲理和智慧。好酒需要陈放才能更加醇香,人生也需要经历岁月的沉淀才能更加丰富多彩。 展开更多
关键词 白酒 酿制 科普 化学物质
暂未订购 下载PDF
危化品王国的奇妙之旅 认领 引用
18
作者 汤宏胜 张咏荷 +4 位作者 王德祥 宁晓辉 张天龙 李延 李华 《大学化学》 CAS 2024年第9期196-202,共7页
实验室的化学品种类繁多,其中有一类极具危险的化学品,它们时常引发各类事故,但又在人类生活中有着十分重要的作用,这就是危险化学品。在实验室中大家总是无法避免接触这类化学品,因此认识危化品,分辨它们的危险属性,确保正确储存和规... 实验室的化学品种类繁多,其中有一类极具危险的化学品,它们时常引发各类事故,但又在人类生活中有着十分重要的作用,这就是危险化学品。在实验室中大家总是无法避免接触这类化学品,因此认识危化品,分辨它们的危险属性,确保正确储存和规范使用至关重要。本文以和平大使淇淇的视角,带大家走进危险化学品国度里的各个部落,介绍实验室危险化学品的分类以及储存方法,让大家了解并从容面对他们,并且能够安全使用,避免实验室危险事故的发生。 展开更多
关键词 实验室 危险化学品 分类 科普
暂未订购 下载PDF
A diselenide MOF-based nanomotor dual-driven by carbon monoxide and near-infrared-Ⅱlight for multimodal tumor-targeted therapy 认领 引用 被引量：3
19
作者 Ruizhen Tian Zherui Zhang +9 位作者 Liping Song Yijia Li Zhengwei Xu Wang Liu Tianlong Zhang Jiayun Xu Youju Huang Tingting Wang Xiaotong Fan Junqiu Liu 《Science China Chemistry》 SCIE EI CAS CSCD 2025年第5期1952-1969,共18页
The dense extracellular matrix and high interstitial pressure within tumors hinder nanoparticle penetration,reducing therapeutic efficacy.To address this,we engineered a dual-driven nanomotor based on a diselenide met... The dense extracellular matrix and high interstitial pressure within tumors hinder nanoparticle penetration,reducing therapeutic efficacy.To address this,we engineered a dual-driven nanomotor based on a diselenide metal-organic framework(MOF)using a layer-by-layer assembly process for multimodal synergistic tumor therapy.Diselenide-containing imidazole derivatives coordinated with Zn2+form the MOF,sequentially encapsulating near-infrared-Ⅱ(NIR-Ⅱ)photothermal-responsive gold nanorods(AuRods),Mn2CO10(MnCO),and glucose oxidase(GOD).The nanoparticle surface was functionalized with 4T1 cancer cell membranes(DSACGM NPs),guiding it to drive toward the tumor site.The photothermal effect of AuRods and CO release drives nanomotor propulsion,enhancing tumor tissue penetration.GOD catalyzes glucose(Glu)oxidation,inducing tumor starvation,while the resulting H2O2triggers CO release,suppressing heat shock protein(HSP)expression and enhancing mild photothermal therapy(PTT).The release of CO and the Mn2+-triggered Fenton-like reaction from MnCO increased intracellular ROS levels,while diselenide depletion of glutathione(GSH)amplified chemodynamic therapy(CDT).In vitro and in vivo experiments show that DSACGM NPs induce cancer cell apoptosis under NIR-Ⅱirradiation and efficiently ablate tumors in mice at sub-hyperthermic temperatures(<45℃)with excellent biocompatibility.This study provides valuable insights into nanomedicine design and its potential in advanced tumor therapies. 展开更多
关键词 dual-driven nanomotors diselenide metal-organic frameworks CO release NIR-II light-responsive mild photothermal therapy chemodynamic therapy starvation therapy
暂未订购 下载PDF
Design,Manufacture and Prospects of Heterostructured Materials 认领 引用 被引量：1
20
作者 Di Wu Runlian Li Tianlong Zhang 《cMat》 2025年第4期27-38,共12页
Heterostructured materials,characterized by distinct microstructures and mechanical properties across different micro-regions,have consistently demonstrated their ability to effectively mitigate the strength-ductility... Heterostructured materials,characterized by distinct microstructures and mechanical properties across different micro-regions,have consistently demonstrated their ability to effectively mitigate the strength-ductility trade-off in structural materials.Mechanisms such as geometrically necessary dislocations and heterogeneous deformation-induced strengthening have been proposed to elucidate their strengthening and toughening processes.Despite their promising potential in theoretical studies and laboratory settings,industrial applications remain limited due to challenges such as high production costs and inadequate understanding of critical properties including fatigue resistance and corrosion behavior.This review explores manufacturing methods for heterogeneous structures,strategies for microstructure regulation,and future research directions for advancing their industrial applications. 展开更多
关键词 heterostructured materials manufacturing methods microstructure design
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
上一页 1 2 下一页 到第 页
在线咨询 使用帮助 返回顶部 意见反馈