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Reversible Plasticity Shape Memory Effect in SEBS/Crystallizable Paraffin: Influence of Paraffin Content

Chinese Journal of Polymer Science 2022年第12期40卷 1697-1705,I0011页

作者： shao-quan zhao Jia-Chun Feng State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular ScienceFudan UniversityShanghai 200433China Yiwu Research Institute of Fudan University Yiwu 322000China

Polymers with reversible plasticity shape memory effect(RPSME)have attracted considerable attention due to their simple programming and large ***,the exact mechanisms of RPSME are still not thoroughly *** this work,the RPSME of SEBS/crystallizable paraffin was investigated by comparatively analyzing the performances and microstructures of samples with different paraffin *** was found the shape fixing ratios(Rfs)of samples increased with the paraffin content,and interestingly,a significant improvement in Rf was observed when the paraffin content exceeded 60 wt%.Tensile test results showed that the deformation characteristics of samples changed from elastic to plastic as the paraffin content increased above 60 wt%.By exploring the crystallization behaviors of paraffin in various SEBS/paraffin samples,it was revealed that the microstructures of SEBS/paraffin were different when the paraffin content was below 50 wt%and above 60 wt%.In samples with low paraffin content(below 50 wt%),nearly all paraffin was co-crystallized with ethylene-co-butylene(EB)chains and its crystallization was severely restricted;while in samples with high paraffin content(above 60 wt%),“excess”paraffin appeared and this part of paraffin crystallized on the template of the EB/paraffin co-crystals,which might be responsible for the elastic-to-plastic transition and the sharp increase in *** on the above results,a possible structural model was proposed to explain the exact mechanism of RPSME in SEBS/paraffin.

关键词： Reversible plasticity shape memory effect Poly(styrene-b-(ethylene-co-butylene)-b-styrene) Crystallizable paraffin Paraffin content

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Effects of the Antiferromagnetic Spin Coupling and Interdot Coulomb Repulsion on Kondo Effects in Serial Double quantum Dots

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Chinese Physics Letters 2014年第4期31卷 139-142页

作者： LI Zeng-Peng WU shao-quan zhao Guo-Ping College of Physics and Electronic Engineering Siehuan Normal University Chengdu 610086

We theoretically study the effects of the antiferromagnetic （AF） spin coupling and the interdot Coulomb repulsion on the Kondo effects in serial double quantum dots by means of the slave-boson mean-field approximation. Our results indicate that in the weak coupling regime, the AF spin coupling strengthens the Kondo resonance, while the interdot Coulomb repulsion suppresses them for the equilibrium case. In the non-equilibrium case, the AF spin coupling strengthens the Kondo resonance only when J 〉 2.5TK0, while the interdot Coulomb repulsion does not suppress Kondo peaks. In the strong coupling regime, the bias voltage has no effects on the Kondo resonance in this system, and the AF spin coupling increases the height of Kondo peaks only when J 〈 2.5TK0. However, the inter-dot Coulomb repulsion suppresses the spin Kondo effect, which induces the orbit Kondo effect. Moreover, the relevant underlying physics of these problems are discussed.

关键词： ANTIFERROMAGNETIC resonance SPIN-spin interactions COULOMB potential KONDO effect quanTUM dots

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Petrogenesis of late Cretaceous high Ba-Sr granodiorites,SE Lhasa block,China:implications for the reworking of juvenile crust and continental growth

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Acta Geochimica 2025年第1期44卷 86-111页

作者： Li-Hang Lin Ren-Zhi Zhu shao-Cong Lai Jiang-Feng Qin Yu Zhu shao-Wei zhao Min Liu State Key Laboratory of Continental Dynamics Department of GeologyNorthwest UniversityXi’an 710069China Ministry of Education Key Laboratory of Western China’s Mineral Resources and Geological Engineering School of Earth Science and ResourcesChang’an UniversityXi’an 710054China

The high Ba-Sr rocks can provide significant clues about the evolution of the continent lithosphere,but their petrogenesis remains *** the Late Cretaceous high Ba–Sr granodiorites in the SE Lhasa Block could potentially provide valuable insights into the continent evolution of the Qinghai-Tibet *** U–Pb ages suggest that the granodiorites were emplaced at 87.32±0.43 ***,the high Ba–Sr granodiorites are characterized by elevated K_(2)O+Na_(2)O contents(8.18-8.73 wt%)and K_(2)O/Na_(2)O ratios(0.99-1.25,mostly>1),and belong to high-K calc-alkaline to shoshonitic *** Yonglaga granodiorites show notably high Sr(653-783 ppm)and Ba(1346-1531 ppm)contents,plus high Sr/Y(30.92-38.18)and(La/Yb)_(N)(27.7-34.7)ratios,but low Y(20.0-22.8 ppm)and Yb(1.92-2.19 ppm)contents with absence of negative Eu anomalies(δEu=0.83-0.88),all similar to typical high Ba–Sr *** variable zirconεHf(t)values of-4.58 to+12.97,elevated initial^(87)Sr/^(86)Sr isotopic ratios of 0.707254 to 0.707322 and lowεNd(t)values of-2.8 to-3.6 with decoupling from the Hf system suggest that a metasomatized mantle source included significant recycled ancient *** occurrence of such high Ba–Sr intrusions indicates previous contributions of metasomatized mantle-derived juvenile material to the continents,which imply the growth of continental crust during the Late Cretaceous in the SE *** with regional data,we infer that the underplated mafic magma provides a significant amount of heat,which leads to partial melting of the juvenile *** melting of the metasomatized mantle could produce a juvenile mafic lower crust,from which the high Ba–Sr granitoids were derived from reworking of previous mafic crust during the Late Cretaceous(ca.100-80 Ma)in the SE Lhasa.

关键词： Late Cretaceous High Ba-Sr granodiorites SE Lhasa Growth of continental crust Juvenile crust

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MXene Hybridized Polymer with Enhanced Electromagnetic Energy Harvest for Sensitized Microwave Actuation and Self‑Powered Motion Sensing

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Nano-Micro Letters 2025年第3期17卷 265-279页

作者： Yu‑Ze Wang Yu‑Chang Wang Ting‑Ting Liu quan‑Liang zhao Chen‑Sha Li Mao‑Sheng Cao School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081People’s Republic of China School of Materials Science and Engineering Peking UniversityBeijing 100871People’s Republic of China School of Mechanical and Material Engineering North China University of TechnologyBeijing 100144People’s Republic of China Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education of the People’s Republic of ChinaHeilongjiang UniversityHarbin 150080People’s Republic of China

Polymeric microwave actuators combining tissue-like softness with programmablemicrowave-responsive deformation hold great promise for mobile intelligentdevices and bionic soft robots. However, their application is challenged by restricted electromagneticsensitivity and intricate sensing coupling. In this study, a sensitized polymericmicrowave actuator is fabricated by hybridizing a liquid crystal polymer with Ti3C2Tx(MXene). Compared to the initial counterpart, the hybrid polymer exhibits unique spacechargepolarization and interfacial polarization, resulting in significant improvements of230% in the dielectric loss factor and 830% in the apparent efficiency of electromagneticenergy harvest. The sensitized microwave actuation demonstrates as the shortenedresponse time of nearly 10 s, which is merely 13% of that for the initial shape memory polymer. Moreover, the ultra-low content of MXene (upto 0.15 wt%) benefits for maintaining the actuation potential of the hybrid polymer. An innovative self-powered sensing prototype that combinesdriving and piezoelectric polymers is developed, which generates real-time electric potential feedback (open-circuit potential of ~ 3 mV) duringactuation. The polarization-dominant energy conversion mechanism observed in the MXene-polymer hybrid structure furnishes a new approachfor developing efficient electromagnetic dissipative structures and shows potential for advancing polymeric electromagnetic intelligent devices.

关键词： Microwave absorption Electromagnetic response Energy harvest Self-sensing Soft actuator

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Study and application of the influence of inclination angle on the cross-fusion mechanism of high gas thick coal seam

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International Journal of Mining Science and Technology 2025年第1期35卷 69-85页

作者： Pengxiang zhao Zechen Chang Shugang Li Risheng Zhuo Yongyong Jia Qiudong shao Wen Lei College of Safety Science and Engineering Xi'an University of Science and TechnologyXi’an 710054China Western Mining Gas Intelligent Extraction Engineering Research Centre Xi’an 710054China Xinjiang Coal and Coalbed Methane Engineering Technology Research Centre Urumqi 830091China Xinjiang Key Laboratory of Coal Mine Disaster Intelligent Prevention and Emergency Response Xinjiang Institute of EngineeringUrumqi 830023China Xinjiang Uygur Autonomous Region Coal Science Research Institute Urumqi 830091China Xinjiang Changji Heze Tengda Mining Co. Ltd.Changji 831100China

In this study,to better decide the effect of coal seam dip angle upon the dynamic change of the crossfusion in gas transport and storage areas during the progress of working face in the high gas thick coal seam,a two-dimensional physical simulation experiment regarded as the theoretical research was conducted to properly explore the variation law of overburden *** results demonstrated that the boundary of the gas transport zone was located in the region of fracture *** boundary of the gas storage area was located in the abrupt penetration ***,according to the information theory,the state of the gas transport and storage areas was determined by the changing trend of the fracture rate and fracture *** mathematical representation model of the dip effect in gas transport and storage areas was *** criteria upon which the regional location of the gas transport area and gas storage area can be based were put *** cross-fusion evolution process of the dip effect in gas transport and storage areas was revealed as *** research results could provide guidance for realising directional and accurate gas extraction.

关键词： Coal seam dip angle Cross fusion High gas thick coal seam Overburden fracture Gas transport and storage areas

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Bending Stiffness of Concrete-Filled Steel Tube and Its Influence on Concrete Placement Timing of Composite Beam-String Structure

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Structural Durability & Health Monitoring 2025年第1期19卷 55-75页

作者： Zhenyu Zhang quan Jin Haitao Zhang zhao Liu Yuyang Wu Longfei Zhang Renzhang Yan CCCC Third Highway Engineering Co. Ltd.Beijing101300China School of Civil Engineering Chongqing Jiaotong UniversityChongqing400074China

When the upper chord beam of the beam-string structure(BSS)is made of concrete-filled steel tube(CFST),its overall stiffness will change greatly with the construction of concrete placement,which will have an impact on the design of the tensioning plans and selection of control measures for the *** order to accurately obtain the bending stiffness of CFST beam and clarify its impact on the mechanical properties of composite BSS during construction,the influence of some factors such as height-width ratio,wall thickness of steel tube,elasticity modulus of concrete,and friction coefficient on the bending stiffness are analyzed parametrically by the numerical simulation technology based on an actual *** calculation formula of the equivalent bending stiffness of CFST is also established through mathematical statistical ***,the equivalent bending stiffness is introduced into the construction and use stages of the composite BSS,respectively,and the mechanical properties such as prestress-tensioning control value,structural deformation,and internal force of key members are comparatively analyzed when adopting two different construction ***,the optimal construction plan of concrete placement first and then prestress-tensioning is proposed.

关键词： Concrete panels freeze-thaw damage compression-shear crack tension-shear crack

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Persistent luminescence encoding for rapid and accurate oral-derived bacteria identification

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Chinese Chemical Letters 2025年第1期36卷 459-463页

作者： Chaohui Zheng Jing Xi Shiyi Long Tianpei He Rui zhao Xinyuan Luo Na Chen quan Yuan The Second Affiliated Hospital of Fujian Medical University Quanzhou 362000China Renmin Hospital of Wuhan University College of Chemistry and Molecular SciencesInstitute of Molecular MedicineSchool of MicroelectronicsWuhan UniversityWuhan 430072China Molecular Science and Biomedicine Laboratory(MBL) State Key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical EngineeringHunan UniversityChangsha 410082China

The dysbiosis of oral microbiota contributes to diseases such as periodontitis and certain cancers by triggering the host inflammatory *** methods for the immediate and sensitive identification of oral microorganism is crucial for the rapid diagnosis and early interventions of associated *** methods for microbial detection primarily include the plate culturing,polymerase chain reaction and enzyme-linked immunosorbent assay,which are either time-consuming or ***,we reported a persistent luminescence-encoded multiple-channel optical sensing array and achieved the rapid and accurate identification of oral-derived *** results demonstrate that electrostatic attractions and hydrophobic-hydrophobic interactions dominate the binding of the persistent luminescent nanoprobes to oral microorganisms and the microbial identification process can be finished within 30 ***,a total of 7 oral-derived microorganisms demonstrate their own response patterns and were differentiated by linear discriminant analysis(LDA)with the accuracy up to 100%both in the solution and artificial saliva ***,the persistent luminescence encoded array sensor could also discern the microorganism mixtures with the accuracy up to 100%.The proposed persistent luminescence encoding sensor arrays in this work might offer new ideas for rapid and accurate oralderived microorganism detection,and provide new ways for disease diagnosis associated with microbial metabolism.

关键词： Oral microorganisms Persistent luminescent nanoprobes Optical sensing array Fingerprint physicochemical properties Linear discriminant analysis

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Impact of human activities on the long-term change and seasonal variability of Ebinur Lake,Northwest China

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Science China Earth Sciences 2025年第2期68卷 473-486页

作者： Haoxin DENG Qiuhong TANG Zhidong ZHANG Xingcai LIU Gang zhao Shibo CUI Zhiping ZHANG Shuai shao Jianbao LIU Fahu CHEN Key Laboratory of Water Cycle and Related Land Surface Processes Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Hydroscience and Engineering Department of Hydraulic EngineeringTsinghua UniversityBeijing 100084China School of Geography Nanjing Normal UniversityNanjing 210023China Group of Alpine Paleoecology and Human Adaptation(ALPHA) State Key Laboratory of Tibetan Plateau Earth SystemEnvironment and Resources(TPESER)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China

Inland lakes in arid Central Asia are particularly susceptible to the impact of climate change and human *** Lake,the largest salt inland lake in Xinjiang,Northwest China,has experienced rapid shrinkage,with human activities identified as the primary influencing ***,it remains unclear how human water use in different sectors,such as irrigation,husbandry,and industry,is responsible for the long-term change and seasonal variability of the lake area under changing *** study aims to address this knowledge gap by developing an integrated hydrological-socioeconomic-lake model that simulates the changes in the Ebinur Lake area during the period of 1950–*** simulated lake area changes under different model experiments were then compared with separate the impacts of climate change and human water use of different *** results indicate that climate change,irrigation,husbandry,and industry water uses have contributed+5%,-79%,-25%,and-1%of the long-term change in the lake area,*** climate change alone increasing the lake area,the increase in human water use has resulted in the persistent decline of Ebinur ***,husbandry water use emerges as a significant contributor to lake shrinkage,accounting for approximately one-third of the impact of ***,irrigation water use has contributed to the enhanced seasonal variability,as indicated by the difference between the maximum and minimum monthly lake area in a *** difference has increased from 120 km2in the 1950s to 183 km2in the 2010s.

关键词： Ebinur Lake Climate change Irrigation Seasonal variability Hydrological-socioeconomic-lake model

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Acellular fish skin grafts in diabetic foot ulcer care:Advances and clinical insights

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World Journal of Diabetes 2025年第1期16卷 34-38页

作者： Yu zhao quan-quan Shen Geriatric Medicine Center Department of EndocrinologyZhejiang Provincial People's Hospital(Affiliated People's Hospital)Hangzhou Medical CollegeHangzhou 310014Zhejiang ProvinceChina Department of Nephrology Zhejiang Provincial People’s Hospital Bijie HospitalBijie 551700Guizhou ProvinceChina Urology&Nephrology Center Department of NephrologyZhejiang Provincial People's Hospital(Affiliated People's HospitalHangzhou Medical College)Hangzhou 310014Zhejiang ProvinceChina

Diabetic foot ulcers(DFUs)represents a significant public health issue,with a rising global prevalence and severe potential complications including *** treatments often fall short due to various limitations such as high recurrence rates and extensive resource *** editorial explores the innovative use of acellular fish skin grafts as a transformative approach in DFU *** studies and a detailed case report highlight the efficacy of acellular fish skin grafts in accelerating wound closure,reducing dressing changes,and enhancing patient outcomes with a lower socio-economic *** their promise,challenges such as limited availability,patient acceptance,and the need for further research *** these through more extensive randomized controlled trials and fostering a multidisciplinary treatment approach may optimize DFU care and reduce the global health burden associated with these complex wounds.

关键词： Diabetic foot ulcer Acellular matrix tissues Acellular fish skin grafts Wound healing Bioengineered materials

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Regulation and function of endoplasmic reticulum autophagy in neurodegenerative diseases

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Neural Regeneration Research 2025年第1期20卷 6-20页

作者： Xiu-Yun zhao De-En Xu Ming-Lei Wu Ji-Chuan Liu Zi-Ling Shi quan-Hong Ma Department of Neurology and Clinical Research Center of Neurological Disease the Second Affiliated Hospital of Soochow UniversitySuzhouJiangsu ProvinceChina Institute of Neuroscience&Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases Soochow UniversitySuzhouJiangsu ProvinceChina Department of Neurology Jiangnan University Medical CenterWuxiJiangsu ProvinceChina

The endoplasmic reticulum,a key cellular organelle,regulates a wide variety of cellular *** reticulum autophagy,one of the quality control systems of the endoplasmic reticulum,plays a pivotal role in maintaining endoplasmic reticulum homeostasis by controlling endoplasmic reticulum turnover,remodeling,and *** this review,we briefly describe the endoplasmic reticulum quality control system,and subsequently focus on the role of endoplasmic reticulum autophagy,emphasizing the spatial and temporal mechanisms underlying the regulation of endoplasmic reticulum autophagy according to cellular *** also summarize the evidence relating to how defective or abnormal endoplasmic reticulum autophagy contributes to the pathogenesis of neurodegenerative *** summary,this review highlights the mechanisms associated with the regulation of endoplasmic reticulum autophagy and how they influence the pathophysiology of degenerative nerve *** review would help researchers to understand the roles and regulatory mechanisms of endoplasmic reticulum-phagy in neurodegenerative disorders.

关键词： autophagy endoplasmic reticulum endoplasmic reticulum autophagy endoplasmic reticulum quality control system endoplasmic reticulum receptors endoplasmic reticulum-associated degradation neurodegeneration neurodegenerative disease selective autophagy unfolded protein response

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