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Water-mediated phase-change composite electrolyte

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Green Energy & Environment 2020年第3期5卷 249-250页

作者： Mingyang liu Buxing han Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of ColloidInterface and Chemical ThermodynamicsCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing100190China School of Chemistry and Chemical Engineering University of Chinese Academy of SciencesBeijing100049China

With the world's focus on wearable electronics, the scientific community has anticipated the plasticine-like processability of electrolytes and electrodes. A bioinspired composite of polymer and phase-changing salt with the similar bonding structure to that of natural bones is a suitable electrolyte candidate. Here, Wang et al. reported a water-mediated composite electrolyte by simple thermal mixing of crystallohydrate and polymer. The processable phase-change composites have significantly high mechanical strength and high ionic mobility.

关键词： Electrolyte Energy storage Electronic devices

In situ probing of electron transfer at the dynamic MoS_(2)/graphene–water interface for modulating boundary slip

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Nano Research 2024年第8期17卷 7513-7521页

作者： Yishu han Dameng liu State Key Laboratory of Tribology in Advanced Equipment Tsinghua UniversityBeijing 100084China

The boundary slip condition is pivotal for nanoscale fluid *** research has primarily focused on simulating the interaction mechanism between the electronic structure of two-dimensional materials and slip of water at the nanoscale,raising the possibility for ultralow friction flow of water at the ***,experimentally elucidating electronic interactions at the dynamic solid–liquid interface to control boundary slip poses a significant *** this study,the crucial role of electron structures at the dynamic solid–liquid interface in regulating slip length was ***,the slip length of water on the molybdenum disulfide/graphene(MoS_(2)/G)heterostructure(100.9±3.6 nm)significantly exceeded that of either graphene(27.7±2.2 nm)or MoS_(2)(5.7±3.1 nm)*** was also analyzed how electron transfer significantly affected interface *** electrons played a crucial role in determining the type and proportion of excitons at both MoS_(2)–water and MoS_(2)/G–water ***,by applying voltage,distinct photoluminescence(PL)responses at static and dynamic interfaces were discovered,achieving a 5-fold modulation in PL intensity and a 2-fold modulation in the trion to exciton intensity *** electrons transfer from the top graphene to the bottom MoS_(2)at the MoS_(2)/G–water interface,reducing surface charge ***,the reduction of electrostatic interactions between the solid and water leads to an increased slip length of water on the MoS_(2)/G *** process aids in comprehending the origin of frictional resistance at the subatomic *** work establishes a foundation for actively controlling and designing of fluid transport at the nanoscale.

关键词： two-dimensional materials solid-liquid interface photoluminescence excitons electron transfer slip length

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食物饱腹感研究及其测试技术进展

食品科学 2025年第2期46卷 299-307页

作者：姚孟丽韩晓峰王若永韩小伟韩忠曾新安黄京美刘义凤苑鹏柳嘉段盛林中国食品发酵工业研究院北京100020 空军特色医学中心北京100142 中国人民解放军总医院第五医学中心北京100139 华南理工大学食品科学与工程学院广东广州510640

饱腹感,即为进食后满足感和不再渴望进食的状态,在维护正常食欲、控制体质量、预防肥胖及改善代谢性疾病方面具有重要意义。文章系统分析影响饱腹感的多种因素,包括食物成分、感官特征、能量密度、心理因素及饮食行为等,并阐述这些因素... 详细信息

饱腹感,即为进食后满足感和不再渴望进食的状态,在维护正常食欲、控制体质量、预防肥胖及改善代谢性疾病方面具有重要意义。文章系统分析影响饱腹感的多种因素,包括食物成分、感官特征、能量密度、心理因素及饮食行为等,并阐述这些因素对饱腹感的作用机制。同时,重点介绍模拟视觉量表、胃肠道激素检测及闪烁扫描等新兴技术在饱腹感测试中的应用,展示这些技术在评估饱腹感方面的科学性和有效性。此外,文章还讨论饱腹感及其测试技术的研究意义与未来展望,旨在为饱腹感相关机制的深入研究、饱腹感测试技术的创新以及高饱腹感食品的开发提供理论支持和实践参考。

关键词：饱腹感食物成分感官特征能量密度心理因素饮食行为模拟视觉量表生化指标

Geometric Condition of 3UPS-S Parallel Mechanism in Singular Configuration

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Chinese Journal of Mechanical Engineering 2014年第1期27卷 130-137页

作者： han Xianguo liu Yanlong College of Mechanical Engineering and Automation Beihang University

The existing researches on singularity of parallel mechanism are mostly limited to the property and regularity of singularity locus and there is no further research into the geometric relationship between uncontrolled kinematic screw and parallel mechanism in singularity. A 3UPS-S parallel mechanism is presented which fulfils 3-DOF in rotation. The regularity of nutation angle singularity is analyzed based on the Jacobian matrix, and the singularity surface of 3UPS-S parallel mechanisms is obtained. By applying the concept of reciprocal product in screw theory, the singular kinematic screw is derived when 3UPS-S parallel mechanism is in singularity. The geometric relationship between singular kinematic screw and singular configuration of 3UPS-S parallel mechanism is investigated by using programs in MATLAB. It is revealed that there are two kinds of situation. Firstly, the three limbs of 3UPS-S parallel mechanism intersect the singular kinematic screw in space simultaneously; Secondly, two limbs cross the singular kinematic screw while the third limb parallels with that screw. It is concluded that the nutation angle singularity of 3UPS-S parallel mechanism belongs to the singular linear complexes. This paper sheds light into and clarifies the geometric relationship between singular kinematic screw and singular configuration of 3UPS-S parallel mechanism.

关键词： parallel mechanism condition number of Jacobian matrix screw theory singular linear complexes

AnxA1、ADAMTS13联合心电图参数对急性心肌梗死患者冠脉狭窄程度及斑块稳定性的评估价值

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西南医科大学学报 2025年第1期48卷 68-73页

作者：刘儒张菲斐李新河南省南阳市中心医院心电图室南阳473000 河南省南阳市中心医院心血管内科南阳473000

目的探究血清膜联蛋白A1(annexin A1,AnxA1)、血管性血友病因子裂解蛋白酶(a disintegrin-like and metalloproteinase with thrombospond in type-1 domain 13,ADAMTS13)联合心电图参数对急性心肌梗死(acute myocardial infarction,AMI)患者冠脉狭窄程度及斑块稳定性的评估价值。方法选取2020年8月至2022年8月在本院收治的280例因胸痛入院,疑似AMI患者作为研究对象,根据肌钙蛋白(cardiac troponin I,cTnI)水平和冠状动脉造影的检查结果分为AMI组(145例)和非AMI组(135例),比较两组血清AnxA1、ADAMTS 13水平;根据AMI患者冠脉狭窄程度(gensini)评分结果分为轻度组(55例)、中度组(53例)和重度组(37例),比较不同冠状动脉病变支数及不同冠脉病变程度患者血清AnxA1、ADAMTS13水平。采用受试者工作曲线(receiver operating characteristic curve,ROC)分析血清AnxA1、ADAMTS13联合心电图对AMI重度冠脉病变以及斑块稳定性的预测价值。结果与非AMI组比较,AMI组患者血清AnxA1、QTc、TP-Tec水平升高[(0.97±0.26)vs(1.31±0.38)μg/mL][(417.56±29.11)vs(456.88±28.62)ms][(106.53±15.28)vs(120.48±14.91)ms],ADAMTS13水平降低[(1.22±0.39)vs(0.86±0.29)ng/L](P<0.05)。与单支组比较,双支和多支组血清AnxA1、QTc、TP-Tec水平升高[(1.08±0.15)vs(1.36±0.21)vs(1.60±0.25)μg/mL][(439.84±19.73)vs(459.73±19.80)vs(479.74±20.11)ms][(114.82±11.40)vs(121.89±10.96)vs(127.41±10.57)ms],ADAMTS13水平降低[(1.05±0.27)vs(0.82±0.19)vs(0.61±0.13)ng/L](P<0.05)。与轻度组比较,中度组和重度组血清AnxA1、QTc、TP-Tec水平升高[(1.11±0.14)vs(1.35±0.20)vs(1.55±0.27)μg/mL][(438.96±20.37)vs(459.44±21.19)vs(479.84±22.42)ms][(113.43±11.58)vs(121.88±11.39)vs(128.96±11.16)ms],ADAMTS13水平降低[(1.03±0.23)vs(0.88±0.17)vs(0.58±0.12)ng/L](P<0.05)。与稳定斑块组比较,不稳定斑块组血清AnxA1、QTc、TP-Tec水平升高[(1.15±0.24)vs(1.46±0.31)μg/mL][(440.37±29.11)vs(472.29±28.62)ms][(112.44±15.63)vs(127.98±15.17)ms],ADAMTS13水平降低[(0.97±0.18)vs(0.76±0.09)ng/L],差异均有统计学意义(P<0.05)。ROC曲线结果显示,联合心电图参数预测AMI重度冠脉病变的AUC为0.948,均显著优于单独检测指标(P<0.05)。四者联合预测AMI斑块稳定性的AUC为0.925,均显著优于各自单独检测指标(P<0.05)。结论血清AnxA1、ADAMTS13联合心电图参数对AMI患者重度冠脉病变以及斑块稳定性有较好的预测价值,可为临床诊断AMI提供参考。

关键词：急性心肌梗死膜联蛋白A1 血管性血友病因子裂解蛋白酶心电图应用价值

Automatic search method for multiple differentials and its application on MANTIS

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Science China(Information Sciences) 2019年第3期62卷 145-159页

作者： Shiyao CHEN ru liu Tingting CUI Meiqin WANG Key Laboratory of Cryptologic Technology and Information Security Ministry of EducationShandong University

Multiple differential cryptanalysis is one of the extensions of classic differential cryptanalysis. In this paper, we present a generic automatic search method for clustering multiple differentials on a target block cipher. Our search method has two steps. Firstly, the sets of input and output differences will be *** these sets, we get different multiple differentials. Then for each one of these multiple differentials, we enumerate and record all satisfied differential trails, which leads to a more accurate evaluation of the multiple differentials distinguisher. Among these different multiple differentials distinguishers, we can choose the best one for key recovery attack. We demonstrate our search method by applying it on the part of differentials of the block cipher MANTIS. As a result, we find a new 10-round multiple differentials distinguisher with probability 2;and an 11-round multiple differentials distinguisher with probability 2;, which is the longest distinguisher for MANTIS so far as we know. This new 10-round distinguisher can lead to a better signal-to-noise ratio, so we derive an improved key recovery attack on MANTIS-6 with the complexity of about 2;chosen-plaintext queries, 2;encryptions and data-time product 2;, which is better than the previous best one with data-time product 2;. Aiming at exploring the gap between the performance of multiple differential attack and the security margin on MANTIS, we also use the 11-round distinguisher to derive a key recovery attack on MANTIS-7 with the complexity of about 2;chosen-plaintext queries,2;encryptions and data-time product 2;. It does not threat the security of full version MANTIS（MANTIS-7） since the security bound of data-time product claimed by the designers is 2;.

关键词： multiple di?erential cryptanalysis structure attack automatic search MANTIS MILP

Constraint Symbolization Method for Analog Layout Retargeting with Geometric Programming

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Chinese Journal of Electronics 2014年第1期23卷 65-69页

作者： WANG Shaoxi FAN Xiaoya ZhanG Shengbing han ru School of Software and Microelectronics Northwestern Polytechnical University

To satisfy the requirements of complex and special analog layout constraints, a constraint symbolization method based on geometric programming for analog layout retargeting is presented in this paper. Our approach is to build symbolic template for layouts, then uses Geometric programming(GP) to achieve new technology design rules, implement device symmetry and matching constraints, and manage parasitics optimization. The GP,a class of non-linear optimization problem, can be transferred or fitted into a convex optimization problem. Therefore, a global optimum solution can be achieved. The symbolization method ensures the layout retargeting automatically. The efficiency and effectiveness of the proposed algorithm, as compared with the other existing methods, are demonstrated by a basic case-study example and a twostage Miller-compensated operational amplifier.

关键词： Constraint symbolization Geometric programming Layout Retargeting

A short review of antibacterial Cu-bearing stainless steel:antibacterial mechanisms,corrosion resistance,and novel preparation techniques

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Journal of Iron and Steel Research International 2024年第1期31卷 24-45页

作者： Shuai liu han-jie Guo School of Artificial Intelligence Beijing Technology and Business UniversityBeijing100048China Beijing Key Laboratory of Special Melting and Preparation of High-End Metal Materials University of Science and Technology BeijingBeijing100083China

Cu-bearing stainless steel is widely used in the fields of food,medical and household sanitary equipment because of its surface finish and corrosion ***,the growth of bacteria on stainless steel leads to the formation of biofilms,which causes ***,the antibacterial property of stainless steel is a worthy research *** of breakthroughs in the field of corrosion resistance and antimicrobial properties are still ***,due to the scarcity of publications on the antibacterial mechanisms and processing methods of antibacterial Cu-bearing stainless steel,we review the current state of relevant research and *** toxicity of Cu,corrosion resistance mechanism of stainless steel,and antibacterial mechanism and preparation method of antibacterial stainless steel are *** addition,alloying,surface modification and other methods are found to have limitations in balancing the toxicity and antibacterial properties of copper and the relationship between the antibacterial properties and corrosion resistance of Cu-bearing stainless steel.A new preparation method of antibacterial stainless steel associated with selective laser melting(SLM)is *** is becoming a powerful additive manufacturing technology that can be used to manufacture customized and complex *** research status of SLM applied in antibacterial stainless steel preparation is ***,the future research direction of Cu-bearing antibacterial stainless steel is discussed.

关键词： Cu-bearing stainless steel Antibacterial Processing Additive manufacturing Corrosion resistance

Influence of intermediate annealing on the microstructure and texture of Ni-9.3at%W substrates

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International Journal of Minerals,Metallurgy and Materials 2014年第2期21卷 162-168页

作者： Jia-nan liu Wei liu Guo-yi Tang ru-fei Zhu Advanced Materials Institute and Cleaner Production Key Laboratory Graduate School at Shenzhen Tsinghua University Key Laboratory of Advanced Materials Department of Materials Science and Engineering Tsinghua University

The effects of intermediate annealing （IA） on the microstructure and texture of Ni-9.3at%W substrates have been investigated by using electron backscattering diffraction and X-ray diffraction. Results suggest that IA can optimize the homogeneity of deformation micro-structure. Higher IA temperatures （without undergoing recrystallization during IA） will increase the copper-type components of deformation texture and improve the content of cube texture after recrystallization. Sharp cube texture （97.2%） can be obtained at the optimum IA tem-perature of 650°C. The mechanism underlying the transition of deformation texture can be interpreted as that IA increases the dislocation slipping ability and suppresses the twinning deformation of Copper orientation in the subsequent rolling process. The observed strengthening of cube texture as a result of IA treatment is presumably attributed to the reduction of noncube nucleation and the optimization of preferential growth surrounding the cube nuclei.

关键词： nickel tungsten alloys annealing textures rolling