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A New Representation for Second Order Stochastic Integral-differential Operators and Its Applications

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Acta Mathematicae Applicatae Sinica 2015年第1期31卷 59-70页

作者： guang-yan jia Na ZHANG Qilu Securities Institute for Financial Studies Shandong University College of Management and Economics Tianjin University China Center for Social Computing Tianjin University

In this paper, we＇ll prove new representation theorems for a kind of second order stochastic integral- differential operator by stochastic differential equations （SDEs） and backward stochastic differential equatio... 详细信息

关键词： backward stochastic differential equation with jumps representation theorem stochastic integral-differential operator f-expectation

Temperature-sensitive Micelles as Artificial Chaperones for Insulin Protection

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Chinese Journal of Polymer Science 2025年第2期43卷 350-359页

作者： jia-Wen Chen yan Xiao Mei-Dong Lang Shanghai Key Laboratory of Advanced Polymeric Materials Key Laboratory for Ultrafine Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and TechnologyShanghai200237China

Insulin is an essential and versatile protein taking part in the control of blood glucose levels and protein ***,under prolonged storage or high temperature stress,insulin tends to unfold and aggregate into toxic amyloid fibrils,leading to loss of physiological *** by natural chaperones,a series of temperature-sensitive polycaprolactone-based micelles were designed to prevent insulin from *** micelles were fabricated through the self-assembly of amphiphilic copolymers of methoxy poly(ethylene glycol)-poly(4-diethylformamide caprolactone-co-caprolactone)(mPEG_(17)-P(DECL-co-CL)),which had a regular spherical morphology with particle sizes of about 100 *** addition,the lower critical solution temperature(LCST)of the micelles could be tuned to 9 and 29℃by changing the ratio of DECL to *** from the temperature-sensitivity of DECL segment,the binding ability of micelles to insulin could be modulated by changing the *** LCST,micelles effectively inhibited insulin aggregation and protected it from thermal inactivation due to the strong binding ability between the hydrophobic segment DECL and *** LCST,DECL segment returned to hydrophilic and bound weakly with insulin,leading to the release of insulin and assisting in its recovery of secondary ***,these temperature-sensitive micelles provided an effective strategy for insulin protection.

关键词： Temperature-sensitive Insulin Micelles Chaperones

Assessing microcatheter-assisted 360-degree trabeculotomy combined with trabeculectomy for refractory glaucoma:1-year results

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International Journal of Ophthalmology(English edition) 2025年第1期18卷 94-102页

作者： jia-Yin Qin yan Liu Tao Wang Department of Ophthalmology Peking University International HospitalBeijing 102206China Beijing Key Laboratory of Ophthalmology and Visual Science Beijing Tongren Eye CenterBeijing Tongren HospitalCapital Medical UniversityBeijing 100730China

AIM:To evaluate the efficacy and safety of microcatheterassisted 360-degree trabeculotomy combined with trabeculectomy(MATT-Trab)for treating refractory ***:Patients with refractory glaucoma who underwent MATT-Trab were retrospectively *** indicators for research statistics included the intraocular pressure(IOP)level,degree of decrease,changes in medication dosage,and success *** indicators included the best-corrected visual acuity and incidence of ***:This study comprised 31 patients,including 11 males and 20 females,with ages ranging from 8mo to 67y(mean age:29.40±22.10y).The average postoperative IOP at 1d,1wk,1mo,3mo,6mo,1y,and the last followup was significantly lower than the average preoperative IOP(31.33±9.24 mm Hg,P<0.05).The average number of postoperative medications at 1y was 0.48±1.51,which was significantly reduced compared to that used preoperatively(3.77±0.99,P=0.00).The absolute and qualified success rates were 45.16% and 83.87%,*** acuity exhibited no statistically significant difference between the postoperative and preoperative follow-up time points,except for the first day after *** most common postoperative complications were anterior chamber hemorrhage(25 cases,86.21%)and high IOP(10 cases,34.48%).CONCLUSION:Our results indicate that MATT-Trab is effective and safe for treating refractory glaucoma.

关键词： glaucoma refractor y glaucoma trabeculotomy trabeculectomy microcatheter

Catalytic production of high-energy-density spiro polycyclic jet fuel with biomass derivatives

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Journal of Energy Chemistry 2025年第2期101卷 760-768页

作者： Wen-Jing Zhang yan-Cheng Hu yan-Hong Tan jia Li Ning Li Jing-Pei Cao School of Chemical Engineering and Technology China University of Mining and Technology CAS Key Laboratory of Science and Technology on Applied Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences

High-energy-density（HED） fuel（*** used JP-10 and RJ-4）,featuring compact 3D polycyclic structure with high strain,is of critical importance for volume-limited military aircraft,since their high density and combustion heat can provide more propulsion *** reduce the reliance on petroleum source,it is highly desirable to develop renewable alternatives for the production of strained polycyclic HED fuel,but which remains a big challenge because of the inaccessibility caused by the high strain,We herein demonstrate a three-step catalytic route towards highly strained C17and C18spirofuel with biomass *** process includes catalytic aldol condensation of renewable cyclohexanone/cyclopentanone with benzaldehyde,catalytic spiro Diels-Alder（D-A） reaction of aldol adduct with isoprene,and catalytic *** key spiro D-A reaction is enabled by the catalysis of heterogeneous Lewis acidic ionic *** chloroaluminate IL,formed by benign urea and AICl3,exhibits good catalytic performance and reusability for this *** eventual hydrodeoxygenation（HDO）over Pd/C and H-Y produces strained tricyclic spirofuel with density>0.93 g/mL,combustion heat>41 MJ/L and freezing point <-40℃,which are better than the properties of tactical fuel ***,it is anticipated that the as-prepared renewable fuels have the potential to replace traditional petroleum-derived HED fuels.

关键词： Biomass derivatives Cycloaddition High-energy-density Lewis acidic ionic liquid Spiro polycyclic fuel

Health risks of rare earth elements exposure:Impact on mitochondrial DNA copy number and micronucleus frequency

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Journal of Environmental Sciences 2025年第5期151卷 150-160页

作者： Shiyi Hong Yali Zhang Qiaojian Zhang Zekang Su Guiping Hu Li Wang Shanfa Yu Xiaojun Zhu guang jia Department of Occupational and Environmental Health Sciences School of Public HealthPeking UniversityBeijing 100083China School of Engineering Medicine and Beijing Advanced Innovation Center for Big Data-Based Precision Medicine Beihang UniversityBeijing 100083China Department of Toxicology School of Public HealthBaotou Medical CollegeBaotouInner Mongolia 014040China Henan Institute for Occupational Medicine Zhengzhou 450052China National Center for Occupational Safety and Health Beijing 102308China Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety School of Public HealthPeking UniversityBeijing 100083China

Toxic effects in terms of mitochondria and hereditary substances have been characterized in vitro for individual rare earth elements,while,the joint effects of mixed elements exposure in the population remain *** on the Occupational Chromate Exposure Dynamic Cohort of China,this study investigated the relationship between 15 blood rare earth elements(cerium,dysprosium,erbium,europium,gadolinium,holmium,lanthanum,lutetium,neodymium,praseodymium,samarium,terbium,thulium,yttrium,and ytterbium)and mitochondrial DNA copy number(MtDNACN)as well as peripheral blood lymphocyte micronucleus frequency(MNF).The elastic net was used to select elements highly correlated with effect indicators,whose dose-response relationships were further illustrated by restricted cubic *** kernel regressionwas employed to explore the combined effects of elements and the contributions of single *** results showed that most rare earth elementswere positively correlatedwith effect indicators,with yttrium showing the strongest association(β(95%CI):0.139(0.1089–0.189)for MtDNACN,0.937(0.345–1.684)for MNF).In the mixed exposure model,with the exposure level fixed at the 50th percentile as the reference,the effect estimates on MtDNACN and MNF increased by 0.228 and 0.598 units,respectively,at the 75th *** single effect analysis implied that yttrium,lanthanum and terbium contributed the most to the elevation of MtDNACN,while yttrium posed the highest risk for genetic damage,accordingly,we provided recommendations to prioritize these elements of *** addition,we observed a chief mediating effect of MtDNACN on the elevation of MNF caused by lanthanum,whereas further mechanistic exploration is required to confirm this finding.

关键词： Rare earth elements Mitochondrial DNA copy number Micronucleus frequency Mixed effect

Analytical study of stationary soliton excitations in diamond-structure chain with quartic anharmonicity

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原子与分子物理学报 2001年第2期18卷 143-149页

作者： XIA Qing lin 1, ZHOU guang hui 2, yan jia ren 2 (1.Department of Applied Physics and Heat Engineering, Central South University, Hunan Changsha 410083 2.Department of Physics, Hunan Normal University, Hunan Changsha 410081) 中南大学湖南长沙 410083 湖南师范大学湖南长沙 410081

This work analytically study soliton excitations in an one dimensional chain with the same mass but two alternating force constants between the nearest neighbors by means of multiple scales method plus quasi discrete approximation. This model simulates a row of atoms in the 〈111〉 direction of a diamond structure type of crystals. The explicit expressions of the stationary soliton solutions are obtained at some special wave vectors of the carrier wave ( q =±π/ a for acoustic mode and q=0 , ±π/ a for optical mode). The configuration of the atomic displacements of this model is different from that of diatomic chain with quartic anharmonicity.

关键词： Stationary soliton excitation Diamond structure Multiple scales method Quasi discrete approximation

16.48% Efficient solution-processed CIGS solar cells with crystal growth and defects engineering enabled by Ag doping strategy

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Journal of Energy Chemistry 2025年第1期100卷 59-65页

作者： Mengyu Xu Shaocong yan Ting Liang jia jia Shengjie Yuan Dongxing Kou Zhengji Zhou Wenhui Zhou Yafang Qi Yuena Meng Litao Han Sixin Wu Key Laboratory for Special Functional Materials of MOE National&Local Joint Engineering Research Centre for High-efficiency Display and Lighting TechnologySchool of Nanoscience and Materials EngineeringHenan UniversityKaifeng 475004HenanChina

Solution-processed Cu(In,Ga)Se_(2)(CIGS) solar cells suffer from serious carrier recombination and power conversion efficiency(PCE) loss because of the poor film properties and easy formation of ***, we propose Ag&Se co-selenization strategy to enhance the crystallization and passivate harmful defects of the CIGS films. The formation of Ag-Se phase during the selenization process enables the formation of large grains and suppresses the deep level defects. It is found that Ag doping can enlarge the depletion region width, lower the Urbach energy and prolong the carrier lifetime. As a result, a champion solution-processed CIGS solar cell presents a high efficiency of 16.48% with the highly improved opencircuit voltage(VOC) of 662 m V and fill factor(FF) of 75.8%. This work provides an efficient strategy to prepare high quality solution-processed CIGS films for high-performance CIGS solar cells.

关键词： CIGS solarcells Solution-processedmethod Ag doping Crystal growth Defects engineering

Construction and application of multicomponent fluorescent droplets

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Chinese Chemical Letters 2025年第1期36卷 137-146页

作者： Wei-Tao Dou Qing-Wen Zeng yan Kang Haidong jia Yulian Niu Jinglong Wang Lin Xu Shanghai Key Laboratory of Green Chemistry and Chemical Processes Shanghai Frontiers Science Center of Molecule Intelligent SynthesesSchool of Chemistry and Molecular EngineeringEast China Normal UniversityShanghai 200062China Shanghai Jahwa United Co. Ltd.Shanghai 200082China Chongqing Key Laboratory of Precision Optics Chongqing Institute of East China Normal UniversityChongqing 401120China

The rapid development of microfluidic technology has led to the evolution of microdroplets from simple emulsion structures to complex multilayered and multicompartmental *** advancements have endowed microdroplets with the capability to contain multiple compartments that remain isolated from one another,enabling them to carry different molecules of ***,researchers can now investigate intricate spatially confined chemical reactions and signal transduction pathways within subcellular ***,modern microdroplets often possess excellent optical transparency,allowing fluorescently labelled,multi-layered,and compartmental droplets to provide detailed insights through real-time,in situ,and dynamic fluorescence ***,this review systematically summarizes current methodologies for preparing multicomponent microdroplets and their applications,particularly focusing on fluorescent ***,it discusses existing critical challenges and outlines future research *** offering a comprehensive overview of the preparation methods and applications of fluorescent microdroplets,this review aims to stimulate the interest of researchers and foster their utilization in more complex and biomimetic environments.

关键词： Fluorescent Microfluidic Fluorescent droplets Multilayered droplets Multicompartmental droplets

Impact of warming and nitrogen addition on soil greenhouse gas fluxes:A global perspective

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Journal of Environmental Sciences 2025年第5期151卷 88-99页

作者： Hongze Ma Xiaoyu jia Weiguang Chen Jingyi yang Jin Liu Xiaoshan Zhang Ke Cui Zhouping Shangguan Weiming yan State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau College of Soil and Water Conservation Science and EngineeringNorthwest A&F UniversityYanglingShaanxi 712100China Institute of Soil and Water Conservation Chinese Academy of SciencesYanglingShaanxi 712100China University of Chinese Academy of Sciences Beijing 100049China Shaanxi Institute of Geo-Environment Monitoring Xi’an 710000China

Global warming and nitrogen(N)deposition have a profound impact on greenhouse gas(GHG)fluxes and consequently,they also affect climate ***,the global combined effects of warming and N addition on GHG fluxes remain to be fully *** address this knowledge gap,a globalmeta-analysis of 197 datasets was performed to assess the response of GHG fluxes to warming and N addition and their interactions under various climate and experimental *** results indicate that warming significantly increased CO_(2)emissions,while N addition and the combined warming and N addition treatments had no impact on CO_(2)***,both warming and N addition and their interactions exhibited positive effects on N_(2)O *** the combined warming and N addition treatments,warming was observed to exert a positive main effect on CO_(2)emissions,while N addition had a positive main effect on N_(2)O *** interactive effects of warming and N addition exhibited antagonistic effects on CO_(2),N_(2)O,and CH_(4)emissions,with CH_(4)uptake dominated by additive ***,we identified biome and climate factors as the two *** findings indicate that both warming and N addition substantially impact soil GHG fluxes and highlight the urgent need to investigate the influence of the combination of warming and N addition on terrestrial carbon and N cycling under ongoing global change.

关键词： Warming Nitrogen(N)addition Greenhouse gas(GHG)fluxes Interactive effects Biome