检索结果-内蒙古大学图书馆

Swelling,Interfacial Behavior,and Rheology of Soft Core-Shell Microgels Introducing Acid Isomer for pH-Temperature Dualresponsiveness

引用

Chinese Journal of Polymer science 2025年第5期43卷 745-755页

作者： Li Zhang Xin-Rui Li Xia-Hui Xiao Li-Dan Zhou Yu-Wei Zhu Jia-Yu Chen Hang Jiang Jie Han Wei Liu To Ngai The Key Laboratory of Synthetic and Biological Colloids Ministry of Education&School of Chemical and Material EngineeringJiangnan UniversityWuxi214122China Department of Chemistry The Chinese University of Hong KongShatinN.T.Hong Kong999077China School of Science and Technology Hong Kong Metropolitan UniversityHomantinKowloonHong Kong999077China

In this study,a pair of dicarboxylic acids as cis-trans isomerism—citraconic acid(CA)and mesaconic acid(MA),was incorporated into polymeric networks of poly(N-isopropylacrylamide)(PNIPAM)-based core-shell microgels via semi-batch precipitation *** demonstrated that the pH-temperature dual responsiveness of the core-shell microgels is highly correlated with the structure and position of the acid *** the cis-trans molecular structure and the crosslinking position of the dicarboxylic acids significantly influenced the hydration capacity and surface charge density of the core-shell *** diverse properties first influenced the swelling behavior,further affecting the interfacial behavior of the microgels,including the oil-water dynamic interfacial tension and air-water compression ***,the rheological behavior of the microgel suspensions also displayed distinct dependences on the frequency and temperature,illustrating that the cis-trans molecular structure and crosslinked position of the dicarboxylic acids also significantly influenced the interparticle clustering in the bulk *** results suggest that the pH sensitivity of the cis-trans dicarboxylic acid isomer affects the ionization and surface charge distribution of the core or shell layers of individual microgels,which further determines the interparticle interaction and cooperative rearrangement at interfaces and in the bulk.

关键词： Microgel Core-shell structure Acid isomer Interfacial behavior Rheology

来源：评论

学校读者我要写书评

暂无评论

Significantly enhanced performance and conductivity mechanism in Nb/Mn co-doped CaBi_(4)Ti_(4)O_(15)ferroelectrics

引用

Journal of Materiomics 2024年第3期10卷 652-669页

作者： Jiageng Xu Shaoxiong Xie Qian Xu Jie Xing Qingyuan Wang Jianguo Zhu School of Aeronautics and Astronautics Sichuan UniversityChengdu610000China Institute for Advanced Study Chengdu UniversityChengdu610106China Department of Mechanical Engineering Kyushu UniversityFukuoka819-0395Japan College of Architecture and Environment Sichuan UniversityChengdu610065China College of Material Science and Engineering Sichuan UniversityChengdu610065China

With the rapid development of high-end industries,the demand for high-temperature piezoelectric materials is significantly ***,realizing the ultra-high performance to meet more ap-plications still faces major scientific and engineering challenges of our ***,a new Nb/Mn co-doped CaBi_(4)Ti_(4)O_(15)(CBT)high-temperature piezoelectric material system of CaBi_(4)Ti_(4-x)(Nb_(2/3)Mn_(1/3))_(x)O_(15)was synthesized by the conventional solid-state sintering *** results show that the addition of the dopants tends to break the long-range ferroelectric chain and soften the flexibility of polarization,resulting in more distorted crystal structure and better ferroelectric properties of CBT *** ultra-high piezoelectric constant(d_(33)=26.8 pC/N)is thus attained in CBT-based ceramics with x=0.12,which is about several times larger than that of pure CBT ***,numerous nano-sized layered domain structures that lie on the lateral plane of grains are observed in ceramics,with lower domain wall energy and better dynamic features under electric fields,mainly responsible for the origin of enhanced ***,excess dopants could make the conductivity mechanism of CBT ceramics transform from p-type to n-type,and also result in a shift of conduction relaxation mechanism from defect dipole rotation polarization to electron relaxation *** work not only provides a promising candidate for high-temperature piezoelectric materials,but also opens a window for opti-mizing performance by tailoring domain structures using chemical modification.

关键词： CaBi_(4)Ti_(4)O_(15) Lattice distortion Electrical performance Domain structure Conductivity mechanism

来源：评论

学校读者我要写书评

暂无评论

On the Meso-structure Spatial Variability Characterizing and Geometric Modelling of Textile-Based Composite via Volume Imaging 23

On the Meso-structure Spatial Variability Characterizing and...

引用

23rd International Conference on Composite materials, ICCM 2023

作者： Yang, Bin Wang, Jihui Causse, Philippe Béguin, Cédric Trochu, François Department of Mechanical Engineering Polytechnique Montréal Canada School of Material Science and Engineering Wuhan University of Technology China Department of System Engineering École de Technologie Supérieure Canada

来源：评论

学校读者我要写书评

暂无评论

Effect of lanthanum oxide on microstructure and mechanical properties of ZK60 magnesium alloy

引用

Journal of Rare Earths 2024年第12期42卷 2270-2278,I0003页

作者： Wei Qiu Zhaoyuan Lu Senmao Zhang Shuanglong Li Jian Chen Wei Chen Wei Li Yanjie Ren Jun Luo Maohai Yao Wen Xie School of Energy and Power Engineering Changsha University of Science&TechnologyChangsha410114China Key Laboratory of Energy Efficiency and Clean Utilization The Education Department of Hunan ProvinceChangsha University of Science&TechnologyChangsha410114China School of Mechanical&Energy Engineering Zhejiang University of Science&TechnologyHangzhou310023China Hunan Provincial Key Laboratory of Vehicle Power and Transmission System Hunan Institute of EngineeringXiangtan411104China Hunan Rare Earth Metal Material Research Institute Institute of Rare Earth Light AlloysChangsha410126China

Different amounts of La_(2)O_(3)were added to ZK60 alloy to observe the changes in microstructure and mechanical properties of ZK60-XLa_(2)O_(3)(X=0,0.2 wt%,0.5 wt%)*** findings reveal that within the as-cast ZK60 alloy,the Mg-Zn binary phase is manifested as rod-shaped precipitates,exhibiting a dispersed distribution predominantly along the grain boundary *** the increase of La_(2)O_(3)addition,the rod-like Mg-Zn binary phases are gradually replaced by Mg-Zn-La ternary phases,and these Mg-Zn-La ternary phases are semi-continuously distributed around the grain *** ZK602 and ZK605 alloys result in a corresponding improvement in ductility after *** is noteworthy that the ductility of the as-extruded ZK605 alloy is increased by 59.4%compared to ZK60 at the expense of a reduction of only 3.9%in yield *** together,the significant increase in ductility of ZK605 is mainly due to the weakening of the basal texture,which is weakened by the redox reaction of La_(2)O_(3)with the a-Mg matrix,generating the La *** decrease in yield strength of ZK605 in the extruded state is closely related to the observed grain coarsening phenomenon and the basal texture *** the same time,the ultimate tensile strength of ZK605 shows a slight increase,which is mainly due to the second phase *** Mg-Zn-La ternary phase exhibits a notably hard character,and it is evident that the distribution of this phase becomes progressively denser as the La_(2)O_(3)content increases.

关键词： ZK60 La_(2)O_(3) Microstructure Mechanical properties Basal texture Rare earths

来源：评论

学校读者我要写书评

暂无评论

Adapting the Simulated Annealing Algorithm to Enhance the Performance of the LEACH Protocol

Adapting the Simulated Annealing Algorithm to Enhance the Pe...

引用

2024 International Conference on Computer and Applications, ICCA 2024

作者： Benhadji, Mohammed Mohammed, Kaddi Mohammed, Omari Material Sciences Department Algeria University of Adrar Lddi Laboratory Mathematics and Computer Science Department Algeria American University of Ras Al Khaimah Computer Science and Engineering Department P.O.Box 10021 Ras Al Khaimah United Arab Emirates

ISBN: (纸本)9798350367560

In parallel with the proliferation and extension of wireless sensor networks (WSNs), as well as the diversity of their applications, such networks continue to fail to operate for lengthy periods of time due to node failure and the inability to replace sensor batteries in most circumstances. This hinders the networks' ability to remain operational over extended periods. That necessitates making the best and most efficient use of the nodes' energy. Hierarchical clustering methods augmented with metaphysical algorithms have produced amazing benefits in terms of network longevity. One of the most significant of these algorithms that draws inspiration from nature and yields excellent results is the simulated annealing technique. In this research, we report on our analysis of this method and how it performs best when used to optimize routing in WSN. © 2024 IEEE.

关键词： Simulated annealing

来源：评论

学校读者我要写书评

暂无评论

A tactfully designed photothermal agent collaborating with ascorbic acid for boosting maxillofacial wound healing

引用

National science Review 2025年第2期12卷 244-258页

作者： Yuxin Qian Yiting Gao Dong Wang Shixuan Zhang Qiuxia Luo Guogang Shan Mengmeng Lu Dingyuan Yan Ben Zhong Tang Ming Zhang Department of Oral Implantology The Affiliated Stomatological Hospital of Nanjing Medical University.State Key Laboratory Cultivation Base of Research Prevention and Treatment for Oral Diseases.Jiangsu Province Engineering Research Center of Stomatological Translational Medicine Nanjing Medical University Institute of Functional Material Chemistry and National&Local United Engineering Lab for Power Battery Faculty of ChemistryNortheast Normal University Center for AIE Research Guangdong Provincial Key Laboratory of New Energy Materials Service Safety College of Materials Science and EngineeringShenzhen University School of Science and Engineering Shenzhen Institute of Aggregate Science and Technology The Chinese University of Hong Kong Shenzhen(CUHK-Shenzhen)

Maxillofacial injuries that may cause severe functional and aesthetic damage require effective and immediate management due to continuous exposure to diverse microbial populations. Moreover, drug resistance,biofilm formation, and oxidative stress significantly impede timely bacterial removal and immune function,making the exploration of advanced materials for maxillofacial wound healing an appealing yet highly challenging task. Herein, a near-infrared photothermal sterilization agent was designed, encapsulated with liposomes and coated with ascorbic acid known for its antioxidant and immune-regulatory functions. The resulting nanoparticles, 4TPE-C6T-TD@AA, effectively neutralize reactive oxygen species generated by lipopolysaccharides, facilitate the conversion of pro-inflammatory M1 macrophages to anti-inflammatory M2 macrophages, and eliminate >90% of Staphylococcus aureus and Escherichia coli by disrupting bacterial physiological functions upon exposure to 808 nm laser irradiation. In vivo experiments demonstrate that 4TPE-C6T-TD@AA rapidly eliminates bacteria from infected wounds in the maxillofacial region of rats,and significantly promotes healing in S. aureus-infected wounds by enhancing collagen formation and modulating the inflammatory microenvironment. In conclusion, this study presents a promising therapeutic strategy for effectively combating bacterial infections and excessive inflammation in treating maxillofacial injuries.

关键词： maxillofacial wound healing photothermal sterilization anti-inflammation

来源：评论

学校读者我要写书评

暂无评论

Effect of Pre-deformation on Nanoscale Precipitation and Hardness of a Maraging Stainless Steel

引用

Acta Metallurgica Sinica(English Letters) 2022年第12期35卷 2089-2100页

作者： Xinlei Zhou Bin Wang Tianyi Zeng Wei Yan Junhua Luan Wei Wang Ke Yang Zengbao Jiao School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Shi-Changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Material Science and Engineering Zhengzhou UniversityZhengzhou 450001China Department of Materials Science and Engineering City University of Hong KongHong KongChina Department of Mechanical Engineering The Hong Kong Polytechnic UniversityHong KongChina

The effect of pre-deformation on nanoscale precipitates and hardness of a maraging stainless steel strengthened by the coprecipitation of Ni_(3)Ti,Mo-enriched and Cr-enriched precipitates was systematically studied using electron back scattered diffraction,transmission electron microscopy and atom probe tomography(APT).Hardness measurements showed that the hardness of specimen with a deformation ratio of 90%peaked at HV 718 aged for 24 h,which is higher than that in the undeformed specimen(HV 603)aged for 72 h at 480℃.APT characterization revealed that pre-deformation could shorten the incubation time of the Mo-enriched and Cr-enriched *** the early-aged stage,pre-deformation increased the stain energy that inhibited the nucleation of Ni_(3)Ti precipitates,but accelerated the rejection of Mo from Ni-Ti ***,the strengthening model indicated that strain hardening(43%)makes a larger contribution to the hardness at the early-aged condition,while precipitation hardening(58%)has most contribution to the hardness at the peak-aged conditition.

关键词： Maraging stainless steel Pre-deformation Precipitation hardening Atom probe tomography

来源：评论

学校读者我要写书评

暂无评论

Nonlinear ionization control by temporally shaped fs+ps double-pulse sequence on ZnO

引用

Chinese Optics Letters 2023年第2期21卷 71-75页

作者：尹唯一宋娟任翔宇姚倩林贤戴晔 Department of Physics Shanghai UniversityShanghai 200444China School of Material Science and Engineering Jiangsu UniversityZhenjiang 212013China

We designed a femtosecond(fs)+picosecond(ps)double-pulse sequence by using a Mach-Zehnder-like apparatus to split a single 120 fs pulse into two sub-pulses,and one of them was stretched to a width of 2 ps by a four-pass grating *** observing the ripples induced on the ZnO surface,we found the ionization rate appeared to be higher for the sequence in which the fs pulse arrived *** electron rate equation was used to calculate changes of electron density distribution for the sequences with different delay *** suggest that using a temporally shaped fs+ps pulse sequence can achieve nonlinear ionization control and influence the induced ripples.

关键词： ZnO ultrafast double-pulse sequence ripple temporal shaping nonlinear ionization

来源：评论

学校读者我要写书评

暂无评论

Growth of magnetic metals on carbon microspheres with synergetic dissipation abilities to broaden microwave absorption

引用

Journal of materials science & Technology 2022年第12期107卷 100-110页

作者： Biao Zhao Yang Li Qingwen Zeng Bingbing Fan Lei Wang Rui Zhang Renchao Che Laboratory of Advanced Materials Shanghai Key Lab of Molecular Catalysis and Innovative MaterialsFudan UniversityShanghai 200438China Department of Materials Science Fudan UniversityShanghai 200438China Henan Key Laboratory of Aeronautical Materials and Application Technology School of Material Science and EngineeringZhengzhou University of AeronauticsZhengzhouHenan 450046China School of Material Science and Engineering Zhengzhou UniversityZhengzhouHenan 450001China State Key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi’an 710072China

Microwave absorption(MA) materials have been captured extensive attentions due to the serious electromagnetic(EM) pollution. Numerous interests focus on the MA performances of core-shell structural composites with magnetic constituents as cores and dielectric constituents as shells, which inevitably suppressed the magnetic coupling causing the decrease of magnetic loss to some extent. Herein, the coreshell structural carbon(C) microsphere/magnetic metal composites were fabricated through the combination of an electrostatic assembly approach and subsequent in-situ reduction reaction. The complex permittivity and permeability of core-shell C@magnetic metal composite system can be effective adjusted by the constituent and microstructure of shells. Thanks to the distinct magnetic coupling from the subtle designed structures and the promotion of the magnetic-dielectric synergy, the C@magnetic metal composite exhibited enhanced MA properties. The optimal reflection loss(RL) of C@Ni composite was-54.1 dB with a thickness of 3.4 mm, meanwhile the effective absorbing band could reach over 5.5 GHz at only a1.8 mm thickness. Broad absorption bandwidth with RL below-10 d B could achieve 6.0 GHz and 6.7 GHz for C@Co and C@Ni Co composites with a thin 2.1 mm thickness, respectively. Our exciting findings might lead a guide on the novel structure design for the functional core-shell structural composites used for microwave absorption.

关键词： Microwave absorption Core-shell structure C@magnetic metal composite Interfacial polarization Magnetic coupling

来源：评论

学校读者我要写书评

暂无评论

Biomass as an alternative solution to energy production and reduction of the greenhouse gas emissions: a review

引用

International Journal of Power and Energy Conversion 2025年第1期16卷 78-99页

作者： Abouallal, Hafida El Idrissi, Ayoub Najah Dkhireche, Nadia Touhami, Mohammed Ebn Laboratory of Advanced Material Engineering Process Department of Chemistry Faculty of Sciences Ibn Tofail University University Campus P.O. Box 242 Kenitra Morocco Advanced Systems – Engineering Laboratory National School of Applied Science Ibn Tofail University University Campus P.O. Box 242 Kenitra Morocco

The increase in population and the expansion of transportation, agriculture, and industry drive the need for energy, leading to a reliance on fossil fuels as the primary energy source. This reliance results in heightened greenhouse gas emissions and environmental damage. To address this, efforts have been made to harness the diverse range of available biomass for energy production, including gas, heat, and electricity through various conversion methods. This article explores the global availability of biomass for energy production, current energy consumption and production trends, biomass classifications and sources, conversion techniques, challenges hindering biomass implementation, and the potential of biomass as an alternative energy source alongside wind, geothermal, and hydroelectric power to eventually replace fossil fuels. The analysis indicates that biomass holds promise for energy generation and can complement other renewable resources in transitioning away from fossil fuels. Copyright © 2025 Inderscience Enterprises Ltd.

关键词： Greenhouse gas emissions

来源：评论

学校读者我要写书评

暂无评论

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

请选择保存的检索档案：

请选择收藏分类：

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

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

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：