检索结果-南通市图书馆

Insight into the role of ethylene glycol on thermodynamics and nucleation kinetics of dimethyl terephthalate in mixed solvent system

引用

Particuology 2024年第2期85卷 1-12页

作者： yujin zhang Chunyan Shi Jing Tang Li Liu Dongxia Yan Qing Zhou Xingmei Lu Songyan Jia College of Chemical Engineering Shenyang University of Chemical TechnologyShenyang110142China Bejing Key Laboratoryoflonic Liquids Clean Process CAS Key LaboratoryofGreen Process and EngineeringState Key Laboratoryof Multiphase Complex SystemsInstitute of Process EngineeringChinese Academy of SciencesBeijing100190China School of Chemistry and Chemical Engineering Qingdao UniversityQingdao266071China Henan Institute of Advanced Technology Zhengzhou UniversityZhengzhou450001China School of Chemical Engineering University of Chinese Academy of SciencesBeijing100049China

Dissolution and nucleation are two essential processes for industrial crystallization.This paper in-vestigates the effect of ethylene glycol addition on the crystallization behavior of dimethyl terephthalate(DMT)in solution.The DMT solubility in mixed solvent system(methanol-ethylene glycol)was deter-mined by isothermal satiation approach,and the solubility was associated using seven models.The model fitting results were consistent with the experimental values.Based on the results,the metastable zone width(MSZW)of DMT was detected by the polythermal approach;the modified Sangwal's theory was used to investigate the nucleation behavior,which can provide a new way of thought for better analysis of the crystallization behavior.The results demonstrated that MSZW was associated with various elements,such as cooling rate,saturation temperature and mass fraction of ethylene glycol.The addition of ethylene glycol slowed down the nucleation rate as shown by the broadening of MSZW.We derive the solid-liquid interface energy,the nucleation driving force,the critical nucleation size and the critical Gibbs free energy according to the classical nucleation theory.It is demonstrated that the nucleation driving force and the solid-liquid interface energy are dependent and jointly influence the MSZW.

关键词： Dissolution Nucleation Solubility Apparent thermodynamic parameters Metastable zone width Solid-liquid interface energy

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Impact resistance performance and optimization of the sand-EPE composite cushion in rock sheds

引用

Journal of Mountain Science 2024年第2期21卷 676-689页

作者： YU Bingxin ZHOU Xiaojun TANG Jianhui zhang yujin zhang Yuefeng School of Civil Engineering Southwest Jiaotong UniversityChengdu 610031China

Rock sheds are widely used to prevent rockfall disasters along roads in mountainous areas.To improve the capacity of rock sheds for resisting rockfall impact,a sand and expandable polyethylene(EPE)composite cushion was proposed.A series of model experiments of rockfall impact on rock sheds were conducted,and the buried depth of the EPE foam board in the sand layer was considered.The impact load and dynamic response of the rock shed were investigated.The results show that the maximum impact load and dynamic response of the rock shed roof are all significantly less than those of the sand cushion.Moreover,as the distance between the EPE foam board and rock shed roof decreases,the maximum rockfall impact force and impact pressure gradually decrease,and the maximum displacement,acceleration and strain of the rock shed first decrease and then change little.In addition,the vibration acceleration and vertical displacement of the rock shed roof decrease from the centre to the edge and decrease faster along the longitudinal direction than that along the transverse direction.In conclusion,the buffering effect of the sand-EPE composite cushion is better than that of the pure sand cushion,and the EPE foam board at a depth of 1/3 the thickness of the sand layer is appropriate.

关键词： Rockfall Rock shed Impact Composite cushion Buffering effect Dynamic response

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Phase transition of multi-component(TiZrVNb)C ceramics—Part I:Phase decomposition induced by carbon content

引用

Journal of Advanced Ceramics 2024年第5期13卷 679-688页

作者： Qingyi Kong Rao zhang Lei Chen Sijia Huo Wenyu Lu yujin Wang Boxin Wei Yu Zhou Institute for Advanced Ceramics School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin 150080China Key Laboratory of Advanced Structure‒Function Integrated Materials and Green Manufacturing Technology Harbin Institute of TechnologyHarbin 150001China School of Materials Science and Chemical Engineering Harbin University of Science and TechnologyHarbin 150001China National Key Laboratory of Precision Hot Processing of Metals Harbin Institute of TechnologyHarbin 150001China

Phase decomposition can effectively enhance the mechanical properties of carbide ceramics and can overcome the difficulty of enhancing the mechanical properties of single-phase multicomponent carbide ceramics.In this work,a series of nonstoichiometric(TiZrVNb)Cx ceramics were prepared by spark plasma sintering(SPS)at different temperatures.The effects of the carbon content on the phase composition,microstructure evolution,and mechanical properties were investigated in detail.Phase decomposition occurred with decreasing carbon content.Two different solid solutions of(Ti,V)-rich and Zr-rich phases formed from the decomposition of equimolar single-phase solid solutions,namely,the Zr-poor phase and Zr-rich phase,respectively.The distribution of Nb element is relatively uniform.The semicoherent interfaces between the Zr-poor phase and the Zr-rich phase can harden and strengthen effectively under the synergistic effect of grain refinement.Ceramics with phase decomposition structures have apparent advantages compared to single-phase high-entropy carbides.This work provides an important train of thought for the microstructure tailoring and properties optimization of multi-component carbide ceramics.

关键词： multicomponent ceramics nontoichiometry microstructure evolution phase decomposition mechanical properties

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Dual ligand-targeted Pluronic P123 polymeric micelles enhance the therapeutic effect of breast cancer with bone metastases

引用

Oncology Research 2024年第4期32卷 769-784页

作者： HUAN GAO JIE zhang TONY GKLEIJN ZHAOYONG WU BING LIU yujin MA BAOYUE DING DONGFENG YIN Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics Department of PharmaceuticsCollege of MedicineJiaxing UniversityJiaxing314001China Department of Pharmacy The General Hospital of Xinjiang Military RegionUrumqi830000China Department of Pathology and Medical Biology University Medical Center GroningenUniversity of GroningenGroningen9713 GZThe Netherlands Department of Pathology Laboratory of Experimental OncologyErasmus MCRotterdam3015 GDThe Netherlands Department of Pharmacy Jiaxing Maternal and Child Health Care HospitalAffiliated Hospital of Jiaxing UniversityJiaxing314001China Qinghai Enlu Biotechnology Co. Ltd.Haidong810700China

Bone metastasis secondary to breast cancer negatively impacts patient quality of life and survival.The treatment of bone metastases is challenging since many anticancer drugs are not effectively delivered to the bone to exert a therapeutic effect.To improve the treatment efficacy,we developed Pluronic P123(P123)-based polymeric micelles dually decorated with alendronate(ALN)and cancer-specific phage protein DMPGTVLP(DP-8)for targeted drug delivery to breast cancer bone metastases.Doxorubicin(DOX)was selected as the anticancer drug and was encapsulated into the hydrophobic core of the micelles with a high drug loading capacity(3.44%).The DOX-loaded polymeric micelles were spherical,123 nm in diameter on average,and exhibited a narrow size distribution.The in vitro experiments demonstrated that a pH decrease from 7.4 to 5.0 markedly accelerated DOX release.The micelles were well internalized by cultured breast cancer cells and the cell death rate of micelle-treated breast cancer cells was increased compared to that of free DOX-treated cells.Rapid binding of the micelles to hydroxyapatite(HA)microparticles indicated their high affinity for bone.P123-ALN/DP-8@DOX inhibited tumor growth and reduced bone resorption in a 3D cancer bone metastasis model.In vivo experiments using a breast cancer bone metastasis nude model demonstrated increased accumulation of the micelles in the tumor region and considerable antitumor activity with no organ-specific histological damage and minimal systemic toxicity.In conclusion,our study provided strong evidence that these pH-sensitive dual ligand-targeted polymeric micelles may be a successful treatment strategy for breast cancer bone metastasis.

关键词： Pluronic micelles Targeted nanotherapeutics Nanoparticulate drug delivery system Breast cancer with bone metastasis Therapeutic efficacy

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国图像工程:2023

引用

中国图象图形学报 2024年第5期29卷 1307-1320页

作者：章毓晋清华大学电子工程系北京100084

本文是关于中国图像工程的年度文献综述系列之二十九。为了使国内广大从事图像工程研究和图像技术应用的科技人员能够较全面地了解国内图像工程研究和发展的现状,能够有针对性地查询有关文献,且向期刊编者和作者提供有用的参考,本文对2... 详细信息

本文是关于中国图像工程的年度文献综述系列之二十九。为了使国内广大从事图像工程研究和图像技术应用的科技人员能够较全面地了解国内图像工程研究和发展的现状,能够有针对性地查询有关文献,且向期刊编者和作者提供有用的参考,本文对2023年度发表的图像工程相关文献进行了统计和分析。具体从国内15种有关图像工程重要中文期刊在2023年发行的所有154期上发表的学术研究和技术应用文献(共2 989篇)中,选取出所有属于图像工程领域的文献(共865篇),并根据各文献的主要内容将其分别归入图像处理、图像分析、图像理解、技术应用和综述评论5个大类,然后进一步分入23个专业小类(与前18年相同),并在此基础上分别进行了各个期刊及各类文献的统计和分析。根据对2023年统计数据的分析可以看出:从研究角度看,图像分析方向当前得到了最多的关注,其中图像分割和基元检测、目标检测和识别以及人体生物特征提取和验证等都是研究的焦点;从应用角度看,遥感、雷达、声呐、测绘等领域最为活跃,而且新的图像技术开发和应用领域拓展很快。总的来说,中国图像工程在2023年的研究深度和广度还在继续提高和扩大,仍保持了快速发展的势头。综合29年的统计数据还为读者提供了更全面和更可信的各个研究方向发展趋势的信息。

关键词：图像工程图像处理图像分析图像理解技术应用文献综述文献统计文献分类文献计量学

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Brain Network Studies in Chronic Disorders of Consciousness:Advances and Perspectives

引用

Neuroscience Bulletin 2018年第4期34卷 592-604页

作者： Ming Song yujin zhang Yue Cui Yi Yang Tianzi Jiang National Laboratory of Pattern Recognition Institute ofAutomationThe Chinese Academy of SciencesBeijing 100190China Brainnetome Center Institute of AutomationThe ChineseAcademy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100190China Department of Neurosurgery PLA Army General HospitalBeijing 100700China CAS Center for Excellence in Brain Science and IntelligenceTechnology Chinese Academy of SciencesBeijing 100190China Key Laboratory for Neuroinformation of the Ministry ofEducation School of Life Science and TechnologyUniversity of Electronic Science and Technology of ChinaChengdu 625014China The Queensland Brain Institute University of QueenslandBrisbaneQLD 4072Australia

Neuroimaging has opened new opportunities to study the neural correlates of consciousness, and provided additional information concerning diagnosis, prognosis, and therapeutic interventions in patients with disorders of consciousness. Here, we aim to review neuroimaging studies in chronic disorders of consciousness from the viewpoint of the brain network, focusing on positron emission tomogra- phy, functional MRI, functional near-infrared spectroscopy, electrophysiology, and diffusion MRI. To accelerate basic research on disorders of consciousness and provide a panoramic view of unconsciousness, we propose that it is urgent to integrate different techniques at various spatiotemporal scales, and to merge fragmented findings into a uniform ＂Brainnetome＂（Brain-net-ome） research framework.

关键词： Disorders of consciousness Neuroimaging Brain network Brainnetome

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Changes of Effective Connectivity in the Alpha Band Characterize Differential Processing of Audiovisual Information in Cross-Modal Selective Attention

引用

Neuroscience Bulletin 2020年第9期36卷 1009-1022页

作者： Weikun Niu Yuying Jiang Xin zhang Tianzi Jiang yujin zhang Shan Yu Brainnetome Center Institute of AutomationChinese Academy of SciencesBeijing 100190China National Laboratory of Pattern Recognition Institute of AutomationChinese Academy of SciencesBeijing 100190China Center for Excellence in Brain Science and Intelligence Technology Chinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China

Cross-modal selective attention enhances the processing of sensory inputs that are most relevant to the task at hand.Such differential processing could be mediated by a swift network reconfiguration on the macroscopic level,but this remains a poorly understood process.To tackle this issue,we used a behavioral paradigm to introduce a shift of selective attention between the visual and auditory domains,and recorded scalp electroencephalographic signals from eight healthy participants.The changes in effective connectivity caused by the cross-modal attentional shift were delineated by analyzing spectral Granger Causality(GC),a metric of frequency-specific effective connectivity.Using data-driven methods of pattern-classification and feature-analysis,we found that a change in the a band(12 Hz-15 Hz) of GC is a stable feature across different individuals that can be used to decode the attentional shift.Specifically,auditory attention induces more pronounced information flow in the α band,especially from the parietal-occipital areas to the temporal-parietal areas,compared to the case of visual attention,reflecting a reconfiguration of interaction in the macroscopic brain network accompanying different processing.Our results support the role of α oscillation in organizing the information flow across spatially-separated brain areas and,thereby,mediating cross-modal selective attention.

关键词： Human EEG Audiovisual selective attention Granger Causality Pattern classification

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

鲁迅与章太炎传奇小说观之差异及其流衍——重审20世纪以来唐传奇文体的升格

引用

鲁迅研究月刊 2024年第4期 29-38页

作者：王瑜锦南通大学文学院 226019

清末章太炎提出“唐人始造意为巫蛊媟渎之言”,唐传奇背弃了汉代小说开创的街谈巷议、有益于政教的传统,当被视为变体,持类似观点的还有吴虞、朱希祖、浦江清等人。然而在西化小说观和文学观的冲击下,古典小说在20世纪以来逐渐失去了传... 详细信息

清末章太炎提出“唐人始造意为巫蛊媟渎之言”,唐传奇背弃了汉代小说开创的街谈巷议、有益于政教的传统,当被视为变体,持类似观点的还有吴虞、朱希祖、浦江清等人。然而在西化小说观和文学观的冲击下,古典小说在20世纪以来逐渐失去了传统底色,重“情”、尚“美”、提倡虚构等“现代因子”逐步成为小说的内在要义。在这一背景下,传奇小说的地位被不断抬升,鲁迅所提出的唐人“始有意为小说”的观点广泛传播并占据主流,章太炎等人的观点则逐渐隐没,成为边缘。

关键词：传奇小说观念章太炎鲁迅朱希祖浦江清

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Person-independent expression recognition based on person-similarity weighted expression feature

引用

Journal of Systems Engineering and Electronics 2010年第1期21卷 118-126页

作者： Huachun Tan yujin zhang Hao Chen Yanan Zhao Wuhong Wang Department of Transportation Engineering Beijing Institute of Technology Beijing 100081 E R. China Department of Electronic Engineering Tsinghua University Beijing 100084 E R. China

A new method to extract person-independent expression feature based on higher-order singular value decomposition （HOSVD） is proposed for facial expression recognition. Based on the assumption that similar persons have similar facial expression appearance and shape, the person-similarity weighted expression feature is proposed to estimate the expression feature of test persons. As a result, the estimated expression feature can reduce the influence of individuals caused by insufficient training data, and hence become less person-dependent. The proposed method is tested on Cohn-Kanade facial expression database and Japanese female facial expression （JAFFE） database. Person-independent experimental results show the superiority of the proposed method over the existing methods.

关键词： facial expression recognition person-independent ex-pression feature higher-order singular value decomposition feature estimation.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Geochemical Characteristics and Geological Significance of Meta-Volcanic Rocks of the Bainaimiao Group, Sonid Right Banner, Inner Mongolia, China

引用

Journal of Earth Science 2019年第2期30卷 272-285页

作者： Chao zhang Jingyu Quan Zhenghong Liu Zhongyuan Xu Xuejiao Pang yujin zhang Shenyang Center China Geological Survey of Geological College of Earth Sciences Jilin University Shenyang Tests Research Centre Northeast China Coal Field Geology Bureau

The Bainaimiao Group, which crops out in the Sonid Right Banner area of Inner Mongolia, China, comprises mainly metamorphosed volcano-sedimentary rocks. This group can be divided into two formations: a lower formation characterized by intermediate-felsic volcanic rocks, and an upper formation of intermediate-mafic volcanic rocks. Zircon dating indicates that biotite leptynite from the lower formation and chlorite-sericite schist from the upper formation crystallized at 499±2 and 478±2 Ma, respectively, corresponding to different volcanic events. Meta-volcanic rocks of the Bainaimiao Group belong to the calcalkaline series, and the SiO2 concentrations suggest that their protoliths were mainly basalts and rhyolites. Greenschist rocks of the group are enriched in light rare earth elements(LREEs) relative to heavy rare earth elements(HREEs), with(La/Yb)N ratios of 3.08–10.9. In addition, they are enriched in large-ion lithophile elements, including Rb, Ba and K, and depleted in the high-field-strength elements Nb, Ta and Ti. The felsic meta-volcanic rocks also exhibit relative enrichments in LREEs compared with HREEs, with high(La/Yb)N ratios of 2.92–9.89, and are enriched in Rb, Ba, Zr and Hf, and depleted in Sr, Nb and Ta. These geochemical characteristics indicate that the meta-basic volcanic rocks were originated from partial melting of sub-arc mantle wedge that had been previously metasomatized by subducted-slab-derived fluids, whereas the meta-felsic volcanic rocks were generated by partial melting of continental crust. These results suggest that the meta-volcanic rocks of the Bainaimiao Group are the products of oceanic plate subduction magmatism along an active continental margin, which can be attributed to Early Paleozoic subduction of the PaleoAsian Ocean plate beneath the northern margin of the North China Craton.

关键词： Inner Mongolia Bainaimiao Group active continental margin northern margin of the North China Craton

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：