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Interplay between Microscopic Structures and Macroscopic Viscoelastic Properties of Polyampholyte Gels

Chinese Journal of Polymer Science 2024年第9期42卷 1360-1367,I0008页

作者： You-Cai Xue Yi-Ming Yang di Jia Beijing National Laboratory for Molecular Sciences Laboratory of Polymer Physics and ChemistryInstitute of ChemistryChinese Academy of SciencesBeijing100190China University of Chinese Academy of Sciences Beijing100049China

Polyampholyte gels,which have hierarchical structures,exhibit excellent self-healing properties and have great promise for biomaterials and *** investigated the relationship between microscopic structures and macroscopic viscoelastic properties of polyampholyte gels and found three factors influencing their viscoelastic properties,including the chemical crosslinking bonds,topological entanglements controlled by monomer concentration,and the ionic *** strength plays a major role on the strength of ionic bonds.A crossover point of elastic modulus and loss modulus was observed in the dynamic frequency sweeps at low monomer concentration or low chemical crosslinking density for gels with intermediate strength of ionic *** solid-liquid transition signaled by the crossover point is a typical feature of dynamic associated gels,representing the dynamical association-dissociation of the ionic bonds and full relaxation of the topological entanglements in the gel *** the crossover point disappears when the ionic bonds are too weak or too strong to form“permanent”***,in the non-linear yielding measurement,gels with intermediate strength of the ionic bonds are ductile and yield at very large shear strain due to the self-healing properties and the dynamic association-dissociation of the ionic *** the self-healing properties disappear when the ionic bond strength is too weak or too *** work reveals the mechanism of how the dynamic association-dissociation of ionic bonds influences both the linear and non-linear viscoelastic properties of the polyampholyte gels.

关键词： Polyampholyte gel Ionic bond Topological entanglement Self-healing Hierarchical structure

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data-driven Based Uncertainty Set Modeling Method for Microgrid robust Optimization with Correlated Wind Power

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CSEE Journal of Power and Energy Systems 2023年第2期9卷 420-432页

作者： Xinchen Li Yixin Liu Li Guo Xialin Li Chengshan Wang Key Laboratory of Smart Grid of Ministry of Education Tianjin UniversityTianjin300072China

Microgrid is considered an important part of the future zero carbon energy ***,the uncertainty caused by renewable energy source brings huge challenges to the scheduling of MG and restricts its ability of carbon emission *** this paper,a novel improved multi-ellipsoidal uncertainty set modeling method is proposed to better depict the uncertainty of wind power and reduce the conservativeness of traditional robust *** information from historical data is utilized to capture the temporal correlation of forecast error of wind power,as well as the conditional correlation of forecast error with forecast value,making the uncertainty set more data-adaptive to variation of forecast results and more accurate for uncertainty description.A two-stage robust optimization model of a grid-connected microgrid is established based on the proposed uncertainty set and solved by column and constraint generation *** results based on actual data illustrate the average unbalanced power of microgrid between day-ahead trading and real-time power exchange with utility grid is dropped by nearly 11.16%compared with a deterministic optimization method,11.86%with traditional box uncertainty set-based robust optimization method,and 2.89%with stochastic optimization method.

关键词： Correlation data driven improved multiellipsoidal uncertainty set microgrid robust optimization

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Corrupted sensing quantum state tomography

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NEW JOUrNAL OF PHYSICS 2025年第5期27卷 054501-054501页

作者： Ma, Mengru Shang, Jiangwei Beijing Inst Technol Sch Phys Key Lab Adv Optoelect Quantum Architecture & Measu Beijing 100081 Peoples R China

The reliable characterization of quantum states as well as any potential noise in various quantum systems is crucial for advancing quantum technologies. In this work we propose the concept of corrupted sensing quantum state tomography which enables the simultaneous reconstruction of quantum states and structured noise with the aid of simple Pauli measurements only. Without additional prior information, we investigate the reliability and robustness of the framework. The power of our protocol is demonstrated by assuming sparse Gaussian and Poisson noise for low-rank state tomography. In particular, our approach is able to achieve a high quality of the recovery with incomplete sets of measurements and is also suitable for performance improvement of large quantum systems. It is envisaged that the techniques can become a practical tool to greatly reduce the cost and computational effort for quantum tomography in noisy quantum systems.

关键词： quantum tomography Pauli measurement low-rank state corrupted sensing sparse noise

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Knowledge As Not Only Justified True Beliefs in Vision

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IEEE/CAA Journal of Automatica Sinica 2025年第2期12卷 297-299页

作者： Wenbo Zheng Fei-Yue Wang IEEE School of Computer Science and Artificial Intelligence Wuhan University of Technology Sanya Science and Education Innovation Park of Wuhan University of Technology the State Key Laboratory for Management and Control of Complex Systems Institute of Automation Chinese Academy of Sciences

COMPUTATIONAL knowledge vision [1] is emphasized as a novel perspective or field in this paper. It first proposes the visual hierarchy and its connection to knowledge, stating that knowledge is a justified true belief. To further the previous research, we concisely summarize our recent works and suggest a new direction that knowledge is also a thought framework in vision.

关键词： Computational modeling Visualization Artificial intelligence data models Visual perception Visual databases Training data

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Prediction model on hydrolysis kinetics of phthalate monoester:A density functional theory study

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Journal of Environmental Sciences 2024年第1期135卷 51-58页

作者： Tong Xu Jingwen Chen deming Xia Weihao Tang Jiansheng Cui Chun Liu Shuangjiang Li College of Environmental Science and Engineering Hebei University of Science and TechnologyShijiazhuang 050000China Key Laboratory of Industrial Ecology and Environmental Engineering(Ministry of Education) School of Environmental Science and TechnologyDalian University of TechnologyDalian 116024China National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and ManagementInstitute of Eco-environmental and Soil SciencesGuangdong Academy of SciencesGuangzhou 510650China

As primary degradation products of phthalate esters,phthalate monoesters(MPEs)have been widely detected in various aquatic environments and drawn growing toxicological *** kinetics that is of importance for assessing environmental persistence of chemicals remain elusive for ***,kinetics of base-catalyzed and neutral hydrolysis for 18 MPEs with different leaving groups was investigated by density functional theory *** indicate that MPEs with leaving groups having p Kaof<10 prefer dissociative transition *** are more persistent than their parents,and their hydrolysis half-lives were calculated to vary from 3.4 min to 79.2 years(p H=7–9).A quantitative structure-activity relationship model was developed for predicting the hydrolysis kinetics *** was found that p Kaof the leaving groups and electronegativity of the MPEs are key factors determining the hydrolysis *** work may lay a theoretical foundation for better understanding the chemical process that governs MPE persistence in aquatic environments.

关键词： Phthalate monoesters Phthalate esters Hydrolysis density functional theory Quantitative structure-activity relationship

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Strain-induced interstitial anionic electrons and superconductivity of monolayer BaCu

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SUPErCONdUCTOr SCIENCE & TECHNOLOGY 2025年第1期38卷 015018-015018页

作者： Zhou, Tong Guan, Zhiyao Cui, Tian Li, da Jilin Univ Coll Phys State Key Lab Superhard Mat Minist Educ Changchun 130012 Peoples R China Jilin Univ Coll Phys Key Lab Mat Simulat Methods & Software Minist Educ Changchun 130012 Peoples R China Ningbo Univ Sch Phys Sci & Technol Ningbo 315211 Peoples R China

recently, a novel electride, BaCu, which contains no light elements, has been both predicted and synthesized. This material adds to the list of inorganic two-dimensional (2d) interlayer electrides, including Ca2N and Y2C. However, the electride properties of the BaCu monolayer are not known, and its characteristics have not been thoroughly investigated. Here, our first-principles calculations indicated that the BaCu monolayer is a weak electride with few interstitial anionic electrons (IAEs). Notably, biaxial tensile strain can significantly alter the electronic properties of the BaCu monolayer, leading to the increase of IAEs. This strain causes a redistribution of charge from the Ba and Cu atoms to the IAEs. Additionally, the biaxial tensile strain induces superconductivity in the BaCu monolayer, and a notable increase in the critical superconducting transition temperature (Tc) to 0.2 K at 10% strain is observed. The coupling between the vibrations of the Cu atoms and IAEs plays a crucial role in this superconductivity. Our findings provide valuable insights into the relationship between the IAEs and superconductivity in the 2d electrides.

关键词： strain-induced interstitial anionic electrons superconductivity monolayers

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Uncertainty propagation analysis for an aviation accelerometer using an improved saddlepoint approximation method

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STrUCTUrAL ANd MULTIdISCIPLINArY OPTIMIZATION 2024年第10期67卷 180页

作者： Yao, Zhongyang Li, Hua Wei, Xinpeng Li, Pengfei Zhang, Haorui Wei, Yuan Zhang, Zhe Jiang, Chao Li, Chunyang Hunan Univ Coll Mech & Vehicle Engn State Key Lab Adv Design & Mfg Vehicle Body Changsha Peoples R China Flight Automat Control Res Inst AVIC Xian Shanxi Peoples R China Northwestern Polytech Univ Sch Marine Sci & Technol Xian Shanxi Peoples R China Northwestern Polytech Univ Sch Automat Xian Shanxi Peoples R China

As a crucial component of aviation inertial navigation and guidance systems, the accelerometer provides essential information for navigation and guidance. However, due to uncertain factors such as geometric dimensions, material properties, and assembly deviations, accelerometer performance may show significant uncertainty. In this paper, uncertainty propagation analysis for an aviation accelerometer is performed using an improved saddlepoint approximation method we develop. First, the working principle of the aviation accelerometer is analyzed and a finite-element model is built to estimate its deformation field. Second, capacitances of capacitive sensors in the accelerometer are calculated on basis of the deformation field, and the accelerometer bias is then modeled on basis of the capacitances. Third, a sparse grid integration approach is employed to compute the cumulative generating function (CGF) of the accelerometer bias. Finally, the saddlepoint approximation (SPA) method is used to restore the probability density function and cumulative distribution function of the accelerometer bias from its CGF. To increase the computational stability of SPA, we develop a trick by normalizing the performance function. Compared with the existing moment-based SPA method, which constructs the CGF through the first four moments, the proposed method computes the CGF directly, thus obtaining significantly higher accuracy.

关键词： Aviation accelerometer Accelerometer bias Uncertainty propagation analysis Probability density function Cumulative distribution function Cumulative generating function Sparse grid Saddlepoint approximation

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Balanced operation strategies of district heating systems based on dynamic hydraulic-thermal modeling

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Energy and Built Environment 2025年第3期6卷 466-483页

作者： Lin, Xiaojie Zhang, Ning Luo, Zheng Feng, Encheng Zhong, Wei Key Laboratory of Clean Energy and Carbon Neutrality of Zhejiang Province Zhejiang University Zhejiang China Shanghai Institute for Advanced Study Zhejiang University Shanghai China Polytechnic Institute Zhejiang University Zhejiang China Jiaxing Research Institute Zhejiang University Zhejiang China

As the improvement of district heating systems, the fine-tuning of operational equipment has become a promising direction. However, in the practical district heating systems, relying solely on manual control and the existing basic models, the dynamic hydraulic-thermal process is hard to cover. Consequently, the primary side control in the current district heating system mainly results in the over or under-supply of heating substations. This article constructs a dynamic hydraulic-thermal model and performs a balanced operation strategies optimization based on the hydraulic-thermal model. The linearization and iterative optimization process are adopted to simplify the hydraulic and thermal modeling for the single pipe, and the hydraulic and thermal calculation are conducted sequentially. For the primary side network in the various operation conditions, the dynamic hydraulic-thermal model is established. The heating supply imbalance of the primary side return temperatures among different heating substations is defined and optimized based on the dynamic hydraulic-thermal model and the particle swarm optimization algorithm. In the case analysis, the results of heating supply imbalance before and after optimization are 0.81 K and 0.47 K, respectively, with a 42.0 % reduction in heating imbalances after optimization. The proposed method could contribute to the fine-tuning of heating substations and the reduction of energy waste due to the imbalanced heating supply, which is significant for the operation strategies of district heating systems. © 2024

关键词： Iterative methods

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Converting an O-vacancy-rich oxide into a multifunctional separator modifier for long-lifespan lithium metal batteries

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Journal of Energy Chemistry 2024年第10期97卷 371-378,I0007页

作者： Juntao Si Xiaoying Li Yixuan Li Kuo Cao Yiran Zhu Chunhua Chen CAS Key Laboratory of Precision and Intelligent Chemistry Department of Materials Science and EngineeringUniversity of Science and Technology of ChinaHefei 230026AnhuiChina

The lithium metal anode is hailed as the desired "holy grail" for the forthcoming generation of highenergy-density batteries,given its astounding theoretical capacity and low ***,the formation and growth of dendrites seriously compromise battery life and ***,an yttriastabilized bismuth oxide(YSB) layer is fabricated on the polypropylene(PP) separator,where YSB reacts with Li anode in-situ in the cell to form a multi-component composite interlayer consisting of Li_(3)Bi,Li_(2)O,and Y_(2)O_(3).The interlayer can function not only as a redistributor to regulate Li^(+) distribution but also as an anion adsorber to increase the Li^(+) transference number from 0.37 to 0.79 for suppressing dendrite nucleation and ***,compared with the cell with a baseline separator,those with modified separators exhibit prolonged lifespan in both Li/Li symmetrical cells and Li/Cu ***,the full cells coupled with ultrahigh-loading LiFePO_(4) display an excellent cycling performance of 1700 cycles with a high capacity retention of ~80% at 1 C,exhibiting great potential for practical *** work provides a feasible and effective new strategy for separator modification towards building a much-anticipated dendrite-free Li anode and realizing long-lifespan lithium metal batteries.

关键词： Lithium metal battery Separator dendrite-free Multifunctional interlayer Conversion-alloying reaction

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Genome-wide primer scan (GPS): a python package for a flexible, reliable and large-scale primer design toolkit

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Frontiers of Computer Science 2025年第2期19卷 127-128页

作者： Wencong HE Yan ZHUO Chen WANG Yemei HUANG Xuelei ZANG Chen YANG Hengyu dENG Yangyu ZHOU Jing LIU Ping ZHANG Xinying XUE Liye ZHANG School of Life Science and Technology ShanghaiTech UniversityShanghai 201210China Shanghai Institute for Advanced Immunochemical Studies ShanghaiTech UniversityShanghai 201210China Department of Respiratory and Critical Care Emergency and Critical Care Medical CenterBeijing Shijitan HospitalCapital Medical UniversityBeijing 100038China Medical School of Chinese PLA Beijing 100853China Department of Respiratory and Critical Care Shandong Second Medical UniversityWeifang 261053China Beijing Key Laboratory of Genetic Engineering Drug and Biotechnology College of Life SciencesBeijing Normal UniversityBeijing 100875China

1 Introduction Microbial infections represent significant global health challenges with far-reaching *** contemporary medical practice,quantitative polymerase chain reaction(qPCr)stands as an important technique for pathogen detection,and the success of qPCr-based diagnosis fundamentally depends on the precision of the qPCr primers employed[1].However,to our knowledge,no easy-to-use qPCr primer design tool with flexible,customized options is *** most clinical contexts,detecting the presence of a pathogen within a given clinical sample is the primary ***,well-designed primers should achieve dual objectives:high sensitivity and specificity for detecting target pathogens,while avoiding false positives,even when testing evolutionarily closely related ***,a constellation of software and program packages towards qPCr primer design is available(for example,ssPrimer).However,these tools typically operate on a single gene or region,necessitating user-driven selection of the region or gene[2,3].In this context,we introduce the first one-step solution,to our knowledge,for scanning entire genomes to identify the best candidate primer *** addition,our framework allows users to efficiently search against a large number of genomes(over 1,800 genomes in our test case)to identify specific primers.

关键词： python false typically

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