检索结果-南通市图书馆

A Self-Healing Elastomer with Extremely High Toughness Achieved by Acylsemicarbazide Hydrogen Bonding and Cu^(2+)-Neocuproine Coordination Interactions

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Polymer Science 2024年第10期42卷 1425-1434,I0007页

作者： Xiao-Ming An yi-Ping Wang Tang-Song zhu Chong Xing Xu-Dong jia Qiu-Hong Zhang Key Laboratory of High Performance Polymer Material and Technology of MOE Department of Polymer Science and EngineeringSchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing210093China State Key Laboratory of Coordination Chemistry Nanjing UniversityNanjing210093China

Elastomers with high mechanical toughness can guarantee their durability during service ***-healing ability,as well as recyclability,can also extend the life of materials and save the consuming cost of the *** efforts have been dedicated to promoting the mechanical toughness as well as the self-healing capability of elastomers at the same time,while it remains a challenge to balance the trade-off between the above properties in one *** we proposed a molecular design driven by dual interactions of acylsemicarbazide hydrogen bonding and Cu^(2+)-neocuproine coordination *** introducing the reversible multiple hydrogen bonds and strong coordination bonds,we successfully fabricated an extremely tough and self-healing *** elastomer can achieve an impressive top-notch toughness of 491 MJ/m^(3).Furthermore,it boasted rapid elastic restorability within 10 min and outstanding crack tolerance with high fracture energy(152.6kJ/m^(2)).Benefiting from the combination of dynamic interactions,the material was able to self-repair under 80℃conveniently and could be reprocessed to restore the exceptional mechanical properties.

关键词： Metal-ligand coordination Hydrogen bond Ultra-tough elastomer Self-healing

Internet of Things Enabled Intelligent Energy Management and Control System for Heavy Equipment Industrial Park and Fuzzy Assessment of Its Schemes

在线全文

学校读者我要写书评

暂无评论

Energy Engineering 2021年第2期118卷 379-397页

作者： jia zhu College of Computer Science Baicheng Normal UniversityBaicheng137000China

In order to solve the problems of poor informationflow,low energy utilization rate and energy consumption data reuse in the heavy equipment industrial park,the Internet of Things(IoT)technology is applied to construct the intelligent energy management and control system(IEMCS).The application architecture and function module planning are analyzed and ***,the IEMCS scheme is not unique due to the fuzziness of customer demand and the understanding deviation of designer to customer demand in the design *** assessment is of great significance for the normal subsequent implementation of the system.A fuzzy assessment method for IEMCS scheme alternatives is proposed to achieve scheme *** group decision using triangular fuzzy number to express the vague assessment of experts is adopted to determine the index *** is modified by replacing Euclidean distance with contact vector distance in IEMCS scheme alternative *** experiment with eight IEMCS scheme alternatives in a heavy equipment industrial park is given for the *** experiment result shows that eight IEMCS scheme alternatives can be *** the comparisons with other methods,the reliability of the results obtained by the proposed method is discussed.

关键词： Internet of Things energy management and control industrial park fuzzy group decision

Au@Ag-labeled SERS lateral flow assay for highly sensitive detection of allergens in milk

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

Food Science and Human Wellness 2023年第3期12卷 912-919页

作者： Jing Li jia Xu yi Pan Yongzhi zhu Yuanfeng Wang Shouhui Chen Xinlin Wei Department of Food Science and Technology School of Agriculture and BiologyShanghai Jiao Tong UniversityShanghai 200240China Institute of Food Engineering College of Life ScienceShanghai Normal UniversityShanghai 200234China

Casein andα-lactalbumin(α-LA)are the main allergens in cow's milk,which can affect the skin,respiratory system,and gastrointestinal tract,even cause anaphylactic *** a rapid and sensitive detection method of casein andα-LA is still ***,a surface-enhanced Raman scattering based lateral flow assay(SERS-LFA)method for rapid and highly sensitive detection of milk allergens in food was established for effectively preventing allergic ***@silver nanoparticles(Au@Ag NPs)were synthesized as SERS active substrate to prepare the antibody-modified SERS Probe and SERS-LFA strips toward casein andα-LA were assembled according to the sandwich *** detection results were calculated according to colorimetric and Raman *** introduction of SRES signal significantly increased the sensitivity of detection with the limit of detection(LOD)of 0.19 ng/mL and 1.74 pg/mL,and exhibited an excellent linear relationship within the range of 0.55-791.50 ng/mL and 0.1 pg/mL-100.0 ng/mL for casein andα-LA,***,SERS-LFA strips was highly specific with the recovery rates for corresponding80.36%-105.12%and 85.73%-118.22%for casein andα-LA,***,the SERS-LFA could be in great potential to develop a unique allergen detection method.

关键词： Casein α-Lactalbumin Au@AgNPs SERS-LFA

Phase Residual Estimations for PCVs of Spaceborne GPS Receiver Antenna and Their Impacts on Precise Orbit Determination of GRACE Satellites

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Aeronautics 2012年第4期25卷 631-639页

作者： TU jia GU Defeng WU yi yi Dongyun College of Science National University of Defense TechnologyChangsha 410073China

In-flight phase center systematic errors of global positioning system（GPS） receiver antenna are the main restriction for improving the precision of precise orbit determination using dual-frequency *** approach is one of the valid methods for in-flight calibration of GPS receiver antenna phase center variations（PCVs） from ground *** this paper,followed by the correction model of spaceborne GPS receiver antenna phase center,ionosphere-free PCVs can be directly estimated by ionosphere-free carrier phase post-fit residuals of reduced dynamic orbit *** the data processing of gravity recovery and climate experiment（GRACE） satellites,the following conclusions are ***,the distributions of ionosphere-free carrier phase post-fit residuals from different periods have the similar systematic ***,simulations show that the influence of phase residual estimations for ionosphere-free PCVs on orbit determination can reach the centimeter ***,it is shown by in-flight data processing that phase residual estimations of current period could not only be used for the calibration for GPS receiver antenna phase center of foretime and current period,but also be used for the forecast of ionosphere-free PCVs in future period,and the accuracy of orbit determination can be well improved.

关键词： global positioning system precise orbit determination phase center variations phase residual estimation GRACE

Thermal forming properties of a Cr-Mn-Si-Ni alloyed naval steel under different forming conditions by different constitutive models

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2022年第10期41卷 3515-3529页

作者： jia-Li Pang Ze-Lin zhu Jing-Yu Zhang Qiang Chen Jie Zhou yi Meng Sumio Sugiyam College of Materials Science and Engineering Chongqing UniversityChongqing400044China Southwest Technology and Engineering Research Institute Chongqing400039China Institute of Industrial Science The University of TokyoTokyo153-8505Japan

A series of thermal compression tests on a CrMn-Si-Ni alloyed naval steel were carried out at different strain rates(0.0005-0.0100 s^(-1)) at different temperatures(1023-1173 K).Based on the friction-corrected data obtained from the compression tests,strain-compensated Arrhenius-type constitutive(SCAC) and backpropagation artificial neural network(BP-ANN) models with the optimized structure of the Cr-Mn-Si-Ni alloyed naval steel were *** optimized BP-ANN model,where the operation time and overfitting of BP-ANN were shortened and avoided,respectively,exhibited improved predictive *** two models were assessed further in terms of the correlation coefficient(R),average absolute relative error,and root mean square *** results validated that the optimized BP-ANN model predicted the flow behavior of the Cr-Mn-Si-Ni alloyed naval steel better than the SC AC *** effect of the forming temperature and strain rate on the microstructural evolution behavior of the naval steel during thermoplastic deformation was investigated through the electron backscatter diffraction analysis of the compressed *** was observed that the dynamic recrystallization of the naval steel was promoted by an increase in the forming temperature and a decrease in the strain rate during thermoplastic deformation.

关键词： Naval steel Thermal compression Recrystallization Constitutive model

Designing hierarchical structures for innovative cooling textile

在线全文

学校读者我要写书评

暂无评论

Nano Research 2024年第10期17卷 9202-9224页

作者： Xiran Du Jinlei Li Bin zhu jia zhu National Laboratory of Solid State Microstructures College of Engineering and Applied SciencesJiangsu Key Laboratory of Artificial Functional MaterialsNanjing UniversityNanjing 210023China School of Sustainable Energy and Resources Nanjing UniversitySuzhou 215163China

The potential of personal cooling technologies in reducing air conditioning energy consumption and enhancing human thermal comfort is *** review focuses on recent advancements in hierarchical structure design for innovative cooling *** with insights into fundamental heat transfer processes between the human body,textile,and the surroundings,we uncover key control *** the advanced hierarchical structure designs enabling effective radiation,sweat evaporation,conduction management,and integration of cold energy sources for realizing effective human body cooling are systematically ***,we explore multifunctional designs beyond cooling,including switchable cooling-heating and ***,we engage in discussions on unifying cooling performance tests and additional multiple requirements to make strides toward practical *** review is anticipated to be a valuable resource,providing the scientific and industrial communities with a quick grasp of past advancements,current challenges,and future directions in achieving effective human body cooling.

关键词： thermal comfort personal cooling textile hierarchical structures

Decontamination of Cr(Ⅵ) from water using sewage sludge-derived biochar: Role of environmentally persistent free radicals

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

Chinese Journal of Chemical Engineering 2023年第4期56卷 97-103页

作者： Yuhan zhu jia Wei Jun Li Faculty of Architecture Civil and Transportation EngineeringBeijing University of TechnologyBeijing 100124China

Biochar is a well-known material for pollutant removal owing to its low cost and rich surface functionality. A kind of highly active substance, called environmentally persistent free radicals(EPFRs), can be produced in the preparation process of biochar, playing an important role in the removal of *** this study, sludge-derived biochars(SBC_(120) and SBC_(270)) were prepared by the hydrothermal carbonization under two temperatures(120℃ and 270℃) to investigate their removal abilities of Cr(Ⅵ). The maximum removal amounts of Cr(Ⅵ) by SBC_(120) and SBC_(270) were 16.58 and 22.93 mg·g^(-1), respectively. It was further revealed that the appearance of Cr(Ⅲ), as a result of EPFRs on sludge-derived biochar(SBC) transferred electrons to Cr(Ⅵ) in neutral solutions. That is to say, oxygen-centered(O-centered) EPFRs on SBC_(120) and carbon-centered(C-centered) EPFRs on SBC_(270) all could be used as electron donors to Cr(Ⅵ) to make it become Cr(Ⅲ). This study not only provides a theoretical basis for the mechanism of pollutants removal by sludge-derived biochar but also offers a new perspective on the direct effect of EPFRs on pollutants.

关键词： Sludge-derived biochar Environmentally persistent free radicals Chromium Removal Reduction

Fully Chemical Recyclable Poly(γ-butyrolactone)-based Copolymers with Tunable Structures and Properties

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Polymer Science 2022年第5期40卷 456-461页

作者： yi-Huan Liu Xin Yuan jia-Qi Wu Ming-Xuan Luo Xin Hu Ning zhu Kai Guo Collegeof Biotechnology and Pharmaceutical Engineering Nanjing Tech UniversityNanjing 211800China Collegeof Materials Science and Engineering Nanjing Tech UniversityNanjing 211800China State Key Laboratory of Materials-Oriented Chemical Engineering Nanjing Tech UniversityNanjing 211800China

The emerging chemical recyclable polymers,such as poly(γ-butyrolactone)(PGBL)and poly((R)-3,4-trans six-membered ring-fused GBL)(P((R)-M)),provide a good solution to the plastic ***,these homopolymers suffer from limited structures and ***,we reported a fully chemical recyclable copolymer P(GBL-co-((R)-M))through ring-opening copolymerization(ROCOP)of GBL and(R)-*** employing organomagnesium as the catalyst and regulating the reaction conditions,the chemical structures of copolymers were wellcontrolled(GBL content=13%-78%,Mn=6560-15600 g/mol,DM=1.08-1.59).The resultant P(GBL-co-((R)-M))exhibited fully chemical recyclability,which rapidly and quantitatively depolymerized into initial GBL and(R)-M monomer through *** varying GBL content,tunable thermal properties were achieved for P(GBL-co-((R)-M)).The onset decomposition temperatures of copolymers varied from 193°C to 234°C.A linear evolution of glass transition temperature(T_(g))of P(GBL-co-((R)-M))versus GBL content was obtained as following equation of Tg=-1.06×GBL mol%×100+*** hope that the reported fully chemical recyclable copolymers with tunable structures and properties would serve as the candidate material for sustainable applications.

关键词： Poly(γ-butyrolactone)-based copolymers Ring-opening copolymerization Chemical recyclability Organomagnesium

Strain-magnetization property of Ni-Mn-Ga(Co,Cu) microwires

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2023年第1期42卷 244-253页

作者： Zhi-yi Ding jia-Jie Gao Zeng-Bao jiao Hong-Hui Wu Ai-ying Chen Jie zhu State Key Laboratory for Advanced Metals and Materials University of Science and Technology BeijingBeijing100083China School of Materials Science and Chemistry University of Shanghai for Science and TechnologyShanghai200093China Department of Mechanical Engineering The Hong Kong Polytechnic UniversityHong Kong999077China School of Materials Science and Engineering University of Science and Technology BeijingBeijing100083China

Magnetization associated with reversible phase transformation or rearrangement of martensite variants of two kinds of shape memory alloys under the coupling of tensile stress were *** is the austenitic Ni_(46)Mn_(28)Ga_(20)Co_(3)Cu_(3)micro wire with the [001] preferred orientation,which exhibits enhanced cyclic stability and large fully recoverable strain(> 8%) due to the stress-induced reversible martensitic transformation at room *** other is the Ni_(54)Mn_(24)Ga_(22)microwire with ferromagnetic martensitic phase,which has preferential orientation and also exhibits large tensile *** on the improved mechanical properties,the strain-magnetization effect of the two kinds of microwire under the coupling of orthogonal magnetic field and tensile stress was performed and the results indicate that the magnetization decreases with the increase of tensile ***,the magnetization mechanism related to the magnetostructural evolution under stress-magnetic coupling was *** study provides a new way for smart magnetic microwires for novel non-contact and non-destructive detection.

关键词： Ni-Mn-Ga Magnetic shape memory alloy Strain-magnetization effect Superelasticity Martensitic transformation