检索结果-南通市图书馆

Mainchain conformation ordering self-assembly tailored room temperature phosphorescence emission

Science China Chemistry 2025年第01期 329-336页

作者： yuzhu li Yumeng Gao Feng Tian Yu Wang Yuan Yao Shaoliang lin Xiang Ma Binbin Xu Shanghai Key Laboratory of Advanced Polymeric Materials Key Laboratory for Ultrafine Materials of Ministry of Education School of Materials Science and Engineering East China University of Science and Technology Shanghai Synchrotron Radiation Facility Shanghai Advanced Research Institute Chinese Academy of Sciences Key Laboratory for Advance Materials and Feringa Noble Prize Scientist Joint Research Centre Frontiers Science for Materiobiology and Dynamic Chemistry School of Chemistry and Molecular Engineering East China University of Science & Technology

Developing organic room-temperature phosphorescence （RTP） materials with a wide range of tunable-emission is significant in expanding the applications of RTP ***,we rationally designed amphiphilic alternating copolymers poly(1,2-bis（4-alkoxyphenyl）ethane-1,2-dione-alt-（ethylene glycol）x)(P（Bz-alt-EGx）) that combined the advantage of alternating benzil and EGxskeleton,and tunable mainchain *** a mainchain conformation ordering assembly （COA） process,P（Bz-alt-EGx） self-assembled into well-defined platelets,and such assemblies emitted blue RTP at ca.425 nm due to the ordered folded-chain conformation and confined *** contrast,traditional self-assembly （TA） of P（Bz-alt-EGx） obtained less ordered aggregates,such as asymmetric worms,vesicles,and rod-like *** resultant less ordered aggregates exhibited yellow-green RTP at ca.550 *** wide-tuning RTP emission in solution （between blue and yellow-green,over125 nm） is realized using the P（Bz-alt-EGx） alternating copolymers under the treatment of different self-assembly *** study uncovers a new strategy to tailor the RTP emission through different self-assembly pathways and holds great promise for the fabrication of advanced optical materials.

关键词：

来源：

同方期刊数据库

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

Facial Fabrication of Biomimetic Water Pinning Microstructures on Polyethylene Surfaces with Robust Superhydrophobic Wetting State

引用

Journal of Bionic Engineering 2020年第4期17卷 644-651页

作者： yuzhu li Hang Gao Yunhai Ma Donghui Chen School of Mechatronics Engineering Shenyang Aerospace UniversityShenyang 110136China Key Laboratory of Fundamental Science for National Defense of Aeronautical Digital Manufacturing Process Shenyang 110136China Key Laboratory for Bionic Engineering Ministry of EducationJilin UniversityChangchun 130022China

Applying hot-embossing technology,a simple and cost-effective method for the fabrication of microstructured High Density Polyethylene(HDPE)surfaces with a robust superhydrophobic wetting state is ***-meshes and micro-grooves in the flexible template are filled by the PE melt in the hot embossing ***,a two-stage microstructure on the PE film surface is *** PE film exhibits a contact angle of 151.8°±2°and roll-offangle of>90~when a 5μL water droplet is dropped on its *** pinning ability on the surface is figured out and roll-off angles are as a quadratic function of specified water droplet ***,a 356μN water pinng force appears on the HDPE film due to the solid-vapor composite interface on its ***,self-cleaning and immersion tests reveal that the HDPE surface with micro-pillars exhibit robust Cassie impregnating wetting state against external *** proposed method for facial fabrication ofmicrostructured surfaces is an appropriate candidate for the development of droplet manipulation and functional biomimetic polymer surfaces.

关键词： water pinning hot-embossing Cassie impregnating self-cleaning microstructure

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

Deep learning-enabled virtual histological staining of biological samples

引用

light(Science & Applications) 2023年第3期12卷 335-354页

作者： Bijie Bai Xilin Yang yuzhu li Yijie Zhang Nir Pillar Aydogan Ozcan Electrical and Computer Engineering Department University of CaliforniaLos AngelesCA 90095USA Bioengineering Department University of CaliforniaLos Angeles 90095USA California NanoSystems Institute(CNSi) University of CaliforniaLos AngelesCAUSA

Histological staining is the gold standard for tissue examination in clinical pathology and life-science research,which visualizes the tissue and cellular structures using chromatic dyes or fluorescence labels to aid the microscopic assessment of ***,the current histological staining workflow requires tedious sample preparation steps,specialized laboratory infrastructure,and trained histotechnologists,making it expensive,time-consuming,and not accessible in resource-limited *** learning techniques created new opportunities to revolutionize staining methods by digitally generating histological stains using trained neural networks,providing rapid,cost-effective,and accurate alternatives to standard chemical staining *** techniques,broadly referred to as virtual staining,were extensively explored by multiple research groups and demonstrated to be successful in generating various types of histological stains from label-free microscopic images of unstained samples;similar approaches were also used for transforming images of an already stained tissue sample into another type of stain,performing virtual stain-to-stain *** this Review,we provide a comprehensive overview of the recent research advances in deep learning-enabled virtual histological staining *** basic concepts and the typical workflow of virtual staining are introduced,followed by a discussion of representative works and their technical *** also share our perspectives on the future of this emerging field,aiming to inspire readers from diverse scientifc fields to further expand the scope of deep learning-enabled virtual histological staining techniques and their applications.

关键词： Deep generating consuming

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

Design and experiment of concentrated flexibility-based variable camber morphing wing

引用

Chinese Journal of Aeronautics 2022年第5期35卷 455-469页

作者： yuzhu li Wenjie GE Jin ZHOU Yonghong ZHANG Donglai ZHAO Zhuo WANG Dianbiao DONG School of Mechanical Engineering Northwestern Polytechnical UniversityXi’an 710072China School of Aeronautic Science and Engineering Beihang UniversityBeijing 100083China

The morphing wing has a significant positive effect on the aerodynamic performance of the *** paper describes a leading-edge of variable camber wing with concentrated flexibility based on the geared five-bar *** driving points of morphing skin formed by the glass fibre composite sheet were optimized to make the skin deformation smooth.A geared fivebar kinematic mechanism rigidly connected to the skin was proposed to drive the leading-edge ***,a new kind of concentrated flexure hinge was designed using the pseudorigid-body method and applied to the joint between the rigid mechanism and the ***,the leading-edge prototypes with traditional hinges and flexure hinges were produced,*** feasibility of the concentrated flexibility leading-edge was verified through the comparative experiments of ground ***,aerodynamic analysis was carried out to compare the concentrated flexure leading-edge wing with the original airfoil.

关键词： Aircraft Concentrated flexure hinge Leading-edge Morphing wing Pseudo-rigid-body model

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

Effects of daily light integral on tomato(Solanum lycopersicon L.)grafting and quality in a controlled environment

引用

International Journal of Agricultural and Biological Engineering 2022年第6期15卷 44-50页

作者： Jinxiu Song Yulong Fan Xingqun li yuzhu li Hanping Mao Zhiyu Zuo Zhirong Zou College of Agricultural Engineering Jiangsu UniversityZhenjiang 212013JiangsuChina Key Laboratory of Modern Agricultural Equipment and Technology Ministry of EducationZhenjiang 212013JiangsuChina College of Horticulture Northwest A&F UniversityYangling 712100ShaanxiChina

As the source of energy and biological signals,light can influence the healing process of grafted seedlings by regulating the synthesis of the endogenous hormone,regeneration of wound-healing tissue,and connection of vascular tissue in grafted *** effect of daily light integral(Dli)on the healing process and seedling quality of tomato(Solanum lycopersicum L.)was analyzed in this study,with the comparison of grafted seedlings treated in dark for 7 d after *** results showed that the height increment of scion and rootstock,adhesion of graft union,stem flow,total chlorophyll content,and net photosynthesis rate increased gradually with increasing light intensity,and no longer increased significantly when the Dli was higher than 5.04 mol/m^(2)·*** contents of auxin(IAA)and gibberellin(GA)in tomato leaves increased and abscisic acid(ABA)decreased with the increase of ***,there was no significant difference between the treatments with Dli higher than 6.48 mol/m^(2)·*** the biomass and energy use efficiency(EUE)of grafted seedlings increased with Dli in a certain range and then *** biomass was the largest when Dli was 5.04 mol/m^(2)·***,EUE was highest when Dli was 7.46 mol/m^(2)·*** conclusion,a suitable Dli is beneficial to cultivate high-quality grafted tomato seedlings,and increasing Dli within a certain range can promote biomass accumulation,connection of vascular tissue,and endogenous hormone biosynthesis in tomato grafted seedlings during the healing *** lighting environment with Dli of 5.04 mol/m^(2)·d(light intensity of 100μmol/m^(2)·s and light time of 14 h/d)is recommended for the healing treatment in high-quality production,which also improves EUE during the healing period of tomato grafted seedlings.

关键词： stress resistance endogenous hormones stem flow energy use efficiency seedling index

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

Structural evolution and zero-field SMM behaviour in ferromagnetically-coupled disk-type Co_(7)clusters bearing exclusively end-on azido bridges

引用

Chinese Chemical Letters 2024年第8期35卷 567-571页

作者： Yijia Jiao yuzhu li Yuting Zhou Peipei Cen Yi Ding Yan Guo Xiangyu liu State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering College of Chemistry and Chemical EngineeringNingxia UniversityYinchuan 750021China College of Public Health College of Basic Medical ScienceNingxia Medical UniversityYinchuan 750021China

Concise chemistry leads to a family of heptanuclear Co^(Ⅱ)-clusters,[Co_(7)(N_(3))_(12)(CH_(3)CN)_(12)][Y_(2)(NO_(3))_(4)(piv)_(4)]·2CH_(3)CN(DC1)(pivH=pivalic acid),[Co_(7)(N_(3))_(12)(CH_(3)CN)_(10)(NO_(3))_(0.4)(Cl)_(1.6)]·4CH_(3)CN(DC2)and[Co_(7)(N_(3))_(12)(CH_(3)CN)_(10)(NO_(3))_(2)]·4CH_(3)CN(DC3),in which the metal ions are exclusively bridged by end-on azido ligands to stabilize a beautiful disk-like *** resulting clusters exhibit interesting structural transformations and thermodynamically-distinct steady states verified by theoretical *** studies reveal the first observation of zero-field SMM behaviour in disk-like heptanuclear Co^(Ⅱ)complexes.

关键词： Multinuclear Co^(Ⅱ)-clusters Disk-like motif Structural modulation Ferromagnetic coupling Zero-field SMM

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

Facile synthesis of the Mn_(3)O_(4)polyhedron grown on N-doped honeycomb carbon as high-performance negative material for lithium-ion batteries

引用

International Journal of Minerals,Metallurgy and Materials 2023年第6期30卷 1152-1161页

作者： Dan Zhang Chunyan Zhang Xuan Zheng Yizhuo Zhao Xinyu Shi Baomin Luo yuzhu li Guangyin liu Xiaodi liu Chuang Yu College of Chemistry and Pharmaceutical Engineering Nanyang Normal UniversityNanyang 473061China State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074China

Because of their large volume variation and inferior electrical conductivity,Mn_(3)O_(4)-based oxide anode materials have short cyclic lives and poor rate capability,which obstructs their *** this study,we successfully prepared a Mn_(3)O_(4)/N-doped honeycomb carbon composite using a smart and facile synthetic *** Mn_(3)O_(4)nanopolyhedra are grown on N-doped honeycomb carbon,which evidently mitigates the volume change in the charging and discharging processes but also improves the electrochemical reaction *** importantly,the Mn-O-C bond in the Mn_(3)O_(4)/N-doped honeycomb carbon composite benefits electrochemical *** features of the Mn_(3)O_(4)/N-doped honeycomb carbon(NHC)composite are responsible for its superior electrochemical *** used for li-ion batteries,the Mn_(3)O_(4)/N-doped honeycomb carbon anode exhibits a high reversible capacity of 598 mAh·g^(−1)after 350 cycles at 1 A·g^(−1).Even at 2 A·g^(−1),the Mn_(3)O_(4)/NHC anode still delivers a high capacity of 472 mAh·g^(−1).This work provides a new prospect for synthesizing and developing manganese-based oxide materials for energy storage.

关键词： Mn_(3)O_(4) polyhedron nitrogen-doped honeycomb carbon anode lithium-ion battery

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

Mental Calculation Drives Reliable and Weak Distant Connectivity While Music listening Induces Dense Local Connectivity

引用

Phenomics 2021年第6期1卷 285-298页

作者： Gaoxing Zheng yuzhu li Xiaoying Qi Wei Zhang Yuguo Yu State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science Human Phenome Institute and Research Institute of Intelligent and Complex SystemsInstitute of Science and Technology for Brain-Inspired IntelligenceShanghai 200433China Department of Neurology Zhongshan Hospital and Shanghai Medical CollegeFudan UniversityShanghai 200032China

Mathematical calculation usually requires sustained attention to manipulate numbers in the mind,while listening to light music has a relaxing effect on the *** differences in the corresponding brain functional network topologies underlying these behaviors remain rarely ***,we systematically examined the brain dynamics of four behaviors(resting with eyes closed and eyes open,tasks of music listening and mental calculation)using 64-channel electroencephalogram(EEG)recordings and graph theory *** developed static and dynamic minimum spanning tree(MST)analysis method and demonstrated that the brain network topology under mental calculation is a more line-like structure with less tree hierarchy and leaf fraction;however,the hub regions,which are mainly located in the frontal,temporal and parietal regions,grow more stable over *** contrast,music-listening drives the brain to exhibit a highly rich network of star structure,and the hub regions are mainly located in the posterior *** then adopted the dynamic dissimilarity of different MSTs over time based on the graph Laplacian and revealed low dissimilarity during mental *** results suggest that the human brain functional connectivity of individuals has unique dynamic diversity and flexibility under various behaviors.

关键词： Dynamic minimum spanning tree Spatiotemporal variability Dissimilarity Graph Laplacian Mental calculation Music listening

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

Mycobacterium Lrp/AsnC family transcriptional factor modulates the arginase pathway as both a sensor and a transcriptional repressor

引用

Journal of Genetics and Genomics 2021年第11期48卷 1020-1031页

作者： Shuangquan Yan Junfeng Zhen yuzhu li Yu Huang Xuefeng Ai Yue li Andrea Stojkoska Xue Huang Cao Ruan Jiang li lin Fan Jianping Xie Institute of Modern Biopharmaceuticals State Key Laboratory Breeding Base of Eco-Environment and Bio-Resource of the Three Gorges AreaKey Laboratory of Ministry of Education Eco-Environment of the Three Gorges Reservoir RegionSchool of Life SciencesSouthwest UniversityChongqing 400715China Shanghai Clinic and Research Center of Tuberculosis Shanghai Pulmonary HospitalTongji University School of MedicineShanghai Key Laboratory of TuberculosisShanghai 200433China

L-Arginine is the precursor of nitric oxide(NO),a host immune effector against intracellular pathogens including Mycobacterium tuberculosis(***).Pathogens including *** have evolved various strategies targeting arginine to block the production of NO for better survival and ***,L-arginine metabolism and regulation in Mycobacterium are poorly ***,we report the identification of *** MSMEG_1415(homolog of *** Rv2324)as an arginine-responsive transcriptional factor regulating the arginase *** the absence of L-arginine,MSMEG_1415 acts as a repressor to inhibit the transcription of the roc(for arginine,ornithine catabolism)gene cluster,thereby switching off the arginase *** with L-arginine relieves the transcriptional inhibition of MSMEG_1415 on the roc gene cluster to activate the arginase ***,the L-arginine-MSMEG_1415 complex activates the transcription of the roc gene cluster by recognizing and binding a 15-bp palindrome motif,thereby preventing the excess accumulation of L-arginine in ***,MSMEG_1415 confers mycobacteria resistance to starvation and fluoroquinolones exposure,suggestive of its important role in *** *** results uncover a unique regulatory mechanism of arginine metabolism in mycobacteria and identify *** Rv2324 as an attractive candidate target for the design of drugs against tuberculosis.

关键词： Mycobacterium tuberculosis Lrp/AsnC family transcriptional regulator Repressor Arginine Arginase pathway Persistence

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

The Ningxia Trade link

引用

Beijing Review 2010年第22期53卷 30-31页

作者： li yuzhu & liU YUNYUN

High-level forum helps strengthen China-Arab trade and economic cooperation Trade deals were plentiful at the first China-Arab States Economic and Trade Forum last month, with over 190 deals on investment

关键词： The Ningxia Trade link LAS

来源：

维普期刊数据库

维普期刊数据库评论

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：