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Improving Impact Toughness of Polylactide/Ethylene-co-vinyl-acetate Blends via Adding Fumed Silica Nanoparticles:Effects of Specific Surface Area-dependent Interfacial Selective Distribution of Silica

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Chinese Journal of Polymer Science 2021年第8期39卷 1040-1049,I0008页

作者： Ting-Ting Zhang Mei-Xi Zhou Zhen-you Guo you-bo zhao Di Han Hao Xiu Hong-Wei Bai Qin Zhang Qiang Fu College of Polymer Science and Engineering State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu 610065China

Adding fumed silica(Si0_(2))has been considered as an effective method for tailoring the phase morphology and performance of elastomer-toughened plastic binary *** has been demonstrated that the selective distribution of SiO_(2) plays a decisive role in the mechanical properties of plastic/elastomer/SiO_(2)nanocomposites,especially for the impact *** this work,we aim to illuminate the role of specific surface area in controlling their selective distribution of fumed SiO_(2) and consequent mechanical properties of plastic/elastomer binary *** types of SiO_(2) with different specific surface areas were incorporated into polylactide/ethylene-co-vinyl-acetate(PLA/EVA)model blends by melt blending *** was found that the selective distribution of SiO_(2) is largely determined by their specific surface areas,***_(2) nanoparticles with low specific surface area has a stronger tendency to be located at the interface between PLA matrix and EVA dispersed phase as compared to those with high specific surface *** specific surface area-dependent interfacial selective distribution of SiO_(2) is mainly attributed to the extent of increased viscosity of EVA dispersed phase in which SiO_(2)nanoparticles are initially dispersed and resultant migration rate of SiO_(2) *** interfacial localized SiO_(2) nanoparticles induce an obvious enhancement in the impact toughness with strength and modulus well *** importantly,in the case of the same interfacial distribution,toughening efficiency is increased with the specific surface area of SiO_(2).Therefore,this is an optimum specific surface area of SiO_(2) for the *** work not only provides a novel way to manipulate the selective distribution of SiO_(2) in elastomer-toughened plastic blends toward high-performance,but also gives a deep insight into the role of interfacial localized nanoparticles in the toughening mechanism.

关键词： Fumed silica Specific surface area Selective distribution Polylactide Impact toughness

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The Role of Progesterone-induced miR-152 of Mouse Endometrial Epithelial Cells in Early Embryonic Development and Implantation

The Role of Progesterone-induced miR-152 of Mouse Endometria...

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中国生理学会生殖科学专业委员会—中国动物学会生殖生物学分会第二次联合学术年会暨“生殖科学专业委员会第二次学术交流会”和“生殖生物学分会第十六次学术年会”

作者： Li Nie you-bo zhao Yi Lei Yun Long Min Liu Mei-jiao Wang Dan zhao Yi-cheng Wang Ming-qian Xu Jin-hu Zhang Dong-zhi Yuan Li-min Yue Department of Physiology West China School of Preclinical and Forensic MedicineSichuan University

Aim:To investigate the role of progesterone-induced miR-152 in early embryonic development and ***:qRT-PCR was used to detect the expression of miR-152 in mouse endometrial epithelial cells on day 1-4 of *** mmu-miR-152-3p mimics or inhibitors were transfected into mouse uteri and primary cultured endometrial epithelial cells to overexpress or downregulate the

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Impact of Startup Strategy and Buffer Tank Volume on the Compressor Inlet State for a 3-MW sCO2 Brayton Cycle

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Journal of Thermal Science 2025年第1期 159-175页

作者： zhao Decai WANG bo Key Laboratory of Advanced Energy and Power Institute of Engineering Thermophysics(IET)Chinese Academy of Sciences (CAS) University of Chinese Academy of Sciences

The supercritical carbon dioxide（sCO2） Brayton cycle system has become an emerging and highly promising method of thermal power conversion due to its efficiency advantage,system compactness,and excellent adaptability of the heat *** the low carbon sCO2Brayton cycle testbed with cycle output power approaching 3 MW,a relatively detailed dynamic simulation model of the entire system is constructed to explore the dynamic response characteristics of the system with different startup strategies and different buffer tank volumes during the startup *** simulation results indicate that the smaller the volume of the buffer tank,the more rapid and obvious the parameter fluctuation in the buffer tank during the *** the allowable relative deviation limit of density is 5%,then the ratio of the buffer tank volume to the volume of the entire closed loop should not be lower than 36.80%.The strategy of simultaneous temperature and speed increase during turbine bypass start can effectively reduce the fluctuation of compressor inlet parameters and reach the steady-state more *** paper provides the recommended matching table for the opening of the turbine bypass valve（TBV） and the main regulating valve（MGV） to reduce the parameter fluctuation during the bypass *** effectiveness of the proposed turbine bypass and bypass switching startup strategy is verified by simulation,which may be used as a reference for test bench's future debugging and operation.

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过敏性紫癜患儿Th17、Treg细胞及IL-17、IL-23水平的测定

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中国免疫学杂志 2016年第12期32卷 1801-1804,1814页

作者：张婷婷吉晓菲李少遊赵波段江熊晶晶刘梅黄永坤昆明医科大学第一附属医院儿科昆明650032 昆明医科大学附属儿童医院风湿免疫科昆明650000

目的:观察过敏性紫癜(Henoch-Schonlein purpura,HSP)患儿急性期及恢复期Th17、Treg细胞及IL-17、IL-23水平变化,以便更好地认识HSP的免疫学发病机制,为HSP的治疗提供帮助。方法:采用流式细胞术(Flow cytometry,FCM)检测HSP患儿65例和... 详细信息

目的:观察过敏性紫癜(Henoch-Schonlein purpura,HSP)患儿急性期及恢复期Th17、Treg细胞及IL-17、IL-23水平变化,以便更好地认识HSP的免疫学发病机制,为HSP的治疗提供帮助。方法:采用流式细胞术(Flow cytometry,FCM)检测HSP患儿65例和健康对照组儿童30例外周血中Th17细胞和Treg细胞比例;采用双抗体夹心酶联免疫吸附(ELISA)法测定其血浆中IL-17、IL-23水平。结果:HSP急性期组Th17、Th17/Treg细胞及IL-17、IL-23水平高于正常对照组(P0.05)。HSP急性期患儿Th17细胞比例与IL-17水平呈正相关(r=0.880,P<0.01);HSP急性期患儿IL-23水平与Th17细胞比例、IL-17水平呈正相关(r=0.838或r=0.877,P<0.01)。结论:Th17、Treg、Th17/Treg、IL-17和IL-23共同参与HSP的发病,但在单纯型、腹型和其他类型中的水平无明显差异,值得深入研究。

关键词：过敏性紫癜儿童 Th17细胞 Treg细胞 IL-17 IL-23

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Double [5]carbohelicene: facile synthesis, chiroptical properties,isomerization study, and lasing application

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Science China Chemistry 2025年第1期 233-240页

作者： Peipei Liu Yantong Li Meng-Xiang Wu Hao Kang Xiao-Li zhao Lin Xu Linlin Liu Xiaodong Li Junfeng Fang Zhiwei Fang Ya Cheng Hai-bo Yang Huakang Yu Xueliang Shi State Key Laboratory of Petroleum Molecular & Process Engineering Shanghai Key Laboratory of Green Chemistry and Chemical ProcessesSchool of Chemistry and Molecular Engineering East China Normal University School of Physics and Optoelectronics South China University of Technology Institute of Polymer Optoelectronic Materials & Devices State Key Laboratory of Luminescent Materials & Devices South China University of Technology School of Physics and Electronic Science Engineering Research Center of Nanophotonics & Advanced Instrument Ministry of EducationEast China Normal University State Key Laboratory of Precision Spectroscopy School of Physics and Electronic Science East China Normal University

Double carbohelicenes have attracted considerable attention due to their aesthetic structures, distinct π-conjugation extension, inherent chirality, and intriguing optical and electronic properties. Herein, the concise de novo synthesis of a new double[5]carbohelicene 1 together with its chiroptical properties, isomerization process and lasing application is presented. 1 was synthesized by a simple protocol involving the formation of a 6,6′-bipentacene as the key intermediate. It is worth noting that1 existed as two diastereomers 1-PP/MM and 1-PM, which were successfully isolated and unambiguously confirmed by Xray crystallography. The optical resolution of the racemic 1-PP/MM was successfully achieved by chiral-phase highperformance liquid chromatography（HPLC）, and 1-PP and 1-MM were characterized by circular dichroism. Interestingly, it was found that 1-PP/MM could be completely isomerized to 1-PM upon heating, and the detailed thermodynamics and kinetics of the isomerization process were systematically investigated. 1-PM exhibited deep-red luminescence with emission maximum at 723 nm and fluorescence quantum yield as high as 32.95%. Consequently, we can showcase the lasing application of 1-PM by doping with epoxy resin to assemble a bottle microlaser spontaneously, which the lasing wavelength is 796.6 nm at a threshold of 0.8 m J cm-2. We believe that our studies, including the facile synthesis methodology, detailed isomerization studies, and lasing application, will shed some light on the design and synthesis of novel carbohelical systems with more functions.

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Moment Redistribution Effect of the Continuous Glass Fiber Reinforced Polymer-Concrete Composite Slabs Based on Static Loading Experiment

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Structural Durability & Health Monitoring 2025年第1期19卷 105-123页

作者： zhao-Jun Zhang Wen-Wei Wang Jing-Shui Zhen bo-Cheng Li De-Cheng Cai Yang-Yang Du Hui Huang Offshore Oil Engineering Co.Ltd. Tianjin300461China Department of Bridge Engineering School of TransportationSoutheast UniversityNanjing211189China

This study aimed to investigate the moment redistribution in continuous glass fiber reinforced polymer(GFRP)-concrete composite slabs caused by concrete cracking and steel bar yielding in the negative bending moment *** experimental bending moment redistribution test was conducted on continuous GFRP-concrete composite slabs,and a calculation method based on the conjugate beam method was *** composite slabs were formed by combining GFRP profiles with a concrete layer and supported on steel beams to create two-span continuous composite slab *** methods,epoxy resin bonding,and stud connection,were used to connect the composite slabs with the steel *** experimental findings showed that the specimen connected with epoxy resin exhibited two moments redistribution phenomena during the loading process:concrete cracking and steel bar yielding at the internal *** contrast,the composite slab connected with steel beams by studs exhibited only one-moment redistribution phenomenon throughout the loading *** the concrete at the internal support cracked,the bending moment decreased in the internal support section and increased in the midspan *** the steel bars yielded,the bending moment further decreased in the internal support section and increased in the mid-span *** GFRP profiles do not experience cracking,there was no significant decrease in the bending moment of the mid-span *** test specimens experienced compressive failure of concrete at the mid-span *** results showed good agreement between the calculated and experimental values of bending moments in the mid-span section and internal support *** proposed model can effectively predict the moment redistribution behavior of continuous GFRP-concrete composite slabs.

关键词： Moment redistribution GFRP-concrete composite slabs bending moment experimental study analysis model

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Crystallographic Texture Evolution of ■-Fe_4N and Its Influences on Tribological Property of Nitrided Steel

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Acta Metallurgica Sinica(English Letters) 2018年第4期31卷 371-379页

作者： Yi-Xue Wang Mu-Fu Yan zhao-bo Chen Cheng-Song Zhang Yuan you National Key Laboratory for Precision Hot Processing of Metals School of Materials Science and Engineering Harbin Institute of Technology School of Mechatronics Engineering Harbin Institute of Technology School of Materials Science and Engineering Southwest Jiaotong University School of Materials Science and Engineering Qiqihar University

The crystallographic texture of γ′-Fe4N in compound layer and its influences on the tribological properties of nitrided steel 38CrMoA1 are investigated in the *** preferred orientation of（200）γ′is produced by low-temperature nitriding in atmosphere with low nitrogen-hydrogen ratio and increases with the nitriding *** preferred orientation of（220）γ′appears after 72 h cyclic *** orientation relationships（0001）ε,/（101）α′,and[ll0]J/[111]γ′（Ill）γ′/（0001）α′ and[011]γ′//[1210]ε,（200）γ′//（l10）α′,and[011]γ′//[111]α′,as well as（1T03）J（220）γ′,and[0100]J/[110]γ′,are established by first-principles *** misfit of interatornic distance（δ）,determining the phase transition resistance,is ***,two reaction pathways during nitriding,and α′→γ′and α′→ε→γ′,are assumed,which determines the preferred orientations of γ′-*** of wear tests demonstrate that the specimen with preferred orientation of（200）γ′ exhibits lower frictional coefficient and lower wear rate in comparison with the specimen with（220）γ′ preferred orien-tation.（111）γ′ texture usually relates to the lower frictional coefficient but higher wear rate due to the main slip system parallel to the sliding ***,the（200）γ′ preferred orientation has a positive significance in improving the wear properties of steels.

关键词： Crystallographic orientation First-principles calculation Plasma nitriding Tribologicaiproperty

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Establishment and verification of theoretical model for underwater light-sheet Scheimpflug LiDAR system

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Science China Technological Sciences 2025年第1期 54-61页

作者： Fei FENG Guojun WU bo LIU Xu zhao Yafeng WU Jinghan XU Xi'an Institute of Optics and Precision Mechanics Chinese Academy of Sciences University of Chinese Academy of Sciences

The Scheimpflug imaging in the air can increase the depth-of-view and has been well studied with an accurate Scheimpflug imaging model. However, there is no corresponding underwater light-sheet Scheimpflug(ULSS) imaging *** a result, imaging accuracy cannot be ensured in the design phase, which mainly relies on the post-calibration. In this paper,the ULSS imaging model is firstly established, which gives the relationship between the pixel number and target distance, as well as that between the target distance and range resolution. A new experimental bracket and an underwater Scheimflug imaging lens were designed and developed. Based on this new device, several experiments were carried out in a pool to study the range resolution of this ULSS LiDAR, by which the correctness of the imaging model was verified. It also shows that the newly designed ULSS LiDAR can achieve a millimeter-level resolution within 8 m.

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Pathology of pain and its implications for therapeutic interventions

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Signal Transduction and Targeted Therapy 2024年第7期9卷 2851-2899页

作者： bo Cao Qixuan Xu Yajiao Shi Ruiyang zhao Hanghang Li Jie Zheng Fengyu Liu you Wan bo Wei Department of General Surgery First Medical CenterChinese PLA General HospitalBeijing 100853China Medical School of Chinese PLA Beijing 100853China Neuroscience Research Institute and Department of Neurobiology School of Basic Medical SciencesKey Laboratory for NeuroscienceMinistry of Education/National Health CommissionPeking UniversityBeijing 100191China

Pain is estimated to affect more than 20%of the global population,imposing incalculable health and economic *** pain management is crucial for individuals suffering from ***,the current methods for pain assessment and treatment fall short of clinical *** from advances in neuroscience and biotechnology,the neuronal circuits and molecular mechanisms critically involved in pain modulation have been *** research achievements have incited progress in identifying new diagnostic and therapeutic *** this review,we first introduce fundamental knowledge about pain,setting the stage for the subsequent *** review next delves into the molecular mechanisms underlying pain disorders,including gene mutation,epigenetic modification,posttranslational modification,inflammasome,signaling pathways and *** better present a comprehensive view of pain research,two prominent issues,sexual dimorphism and pain comorbidities,are discussed in detail based on current *** status quo of pain evaluation and manipulation is summarized.A series of improved and innovative pain management strategies,such as gene therapy,monoclonal antibody,brain-computer interface and microbial intervention,are making strides towards clinical *** highlight existing limitations and future directions for enhancing the quality of preclinical and clinical *** to decipher the complexities of pain pathology will be instrumental in translating scientific discoveries into clinical practice,thereby improving pain management from bench to bedside.

关键词： pain thereby summarized

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Optimal Neuro-Control Strategy for Nonlinear Systems With Asymmetric Input Constraints

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IEEE/CAA Journal of Automatica Sinica 2020年第2期7卷 575-583页

作者： Xiong Yang bo zhao School of Electrical and Information Engineering Tianjin UniversityTianjin 300072China School of Systems Science Beijing Normal UniversityBeijing 100875China

In this paper,we present an optimal neuro-control scheme for continuous-time(CT)nonlinear systems with asymmetric input ***,we introduce a discounted cost function for the CT nonlinear systems in order to handle the asymmetric input ***,we develop a Hamilton-Jacobi-Bellman equation(HJBE),which arises in the discounted cost optimal control *** obtain the optimal neurocontroller,we utilize a critic neural network(CNN)to solve the HJBE under the framework of reinforcement *** CNN's weight vector is tuned via the gradient descent *** on the Lyapunov method,we prove that uniform ultimate boundedness of the CNN's weight vector and the closed-loop system is ***,we verify the effectiveness of the present optimal neuro-control strategy through performing simulations of two examples.

关键词： Adaptive critic designs(ACDs) asymmetric input constraint critic neural network(CNN),nonlinear systems optimal control reinforcement learning(RL)

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