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Surface sulfur vacancies enhanced electron transfer over Co-ZnS quantum dots for efficient degradation of plasticizer micropollutants by peroxymonosulfate activation

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Chinese Chemical Letters 2022年第8期33卷 3829-3834页

作者： yuting gu Tingting Gao Fagen Zhang Chao Lu Wenrui Cao Ziwei Fu Chun Hu Lai Lyu Key Laboratory for Water Quality and Conservation of the Pearl River Delta Ministry of EducationInstitute of Environmental Research at Greater BayGuangzhou UniversityGuangzhou 510006China Shandong Key Laboratory of Water Pollution Control and Resource Reuse School of Environmental Science and EngineeringShandong UniversityQingdao 266237China School of Environmental Science and Engineering Guangzhou UniversityGuangzhou 510006China Institute of Rural Revitalization Guangzhou UniversityGuangzhou 510006China

Peroxymonosulfate(PMS)activation in heterogeneous processes is a promising water treatment ***,the high energy consumption and low efficiency during the reaction are ineluctable,due to electron cycling rate ***,a new strategy is proposed based on a quantum dots(QDs)/PMS ***-ZnS QDs are synthesized by a water phase coprecipitation *** inequivalent lattice-doping of Co for Zn leads to the generation of surface sulfur vacancies(SVs),which modulates the surface of the catalyst to form an electronic nonequilibrium ***,the plasticizer micropollutants can be completely degraded within only tens of seconds in the Co-Zn S QDs/PMS system due to this type of surface *** interfacial reaction mechanism is revealed that pollutants tend to be adsorbed on the cobalt metal sites as the electron donors,where the internal electrons of pollutants are captured by the metal species and transferred to the surface ***,PMS adsorbed on the SVs is reduced to radicals by capturing electrons,achieving effective electron *** oxygen(DO)molecules are also easily attracted to catalyst defects and are reduced to O_(2)^(·-),further promoting the degradation of pollutants.

关键词： Peroxymonosulfate activation Sulfur vacancy Quantum dots ZnS Plasticizer

Fast-chargingand dendrite-free lithiummetal anodeeenabledby partial lithiation ofgraphene aerogel

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Nano Research 2022年第11期15卷 9792-9799页

作者： Yong Ma yuting gu Ying He Le Wei Yuebin Lian Weiyi Pan Xinjian Li Yanhui Su Yang Peng Zhao Deng Zhongfan Liu College of Energy Soochow Institute for Energy and Materials Innovations(SIEMIS)Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu ProvinceSoochow UniversitySuzhou 215006China School of Photoelectric Engineering Changzhou institute of technologyChangzhou 213032China Beijing Graphene Institute(BGI) Beijing 100095China Center for Nanochemistry(CNC) College of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China

The development of deeply cyclable lithium metal batteries with fast-charging capability offers a promising solution to relieve the“range anxiety”in driving electric *** lithium metal anodes suffered from low operating current densities and shallow charge/discharge depths,owing to the intrinsic dendrite growth governed by Sand’s ***,we come up with a novel design of heavy-duty lithium metal anode fabricated by partially infusing the three-dimensional(3D)porous graphene aerogel with molten *** electroanalytical measurements and simulations show that the unique electrode architecture brings notable advantages in mediating smooth Li plating/stripping,including reduced local current density,inhibited dendrite growth,buffered volume fluctuation,as well as more efficient Li ***,a remarkable cycling performance in symmetric cells for over 400 cycles(800 h)with an ultrahigh cycling capacity of 15 mAh·cm^(−2) at 15 mA·cm^(−2) is achieved,which,to our best knowledge,has been never seen in ***4 full cells demonstrate a superb rate capability up to 10 C and a prolonged cycling of 1,600 cycles at 2 C with the per-cycle capacity decay of only 0.023%.This study paves the way for the ultimate deployment of lithium metal batteries in real-world applications that require fast charging and deep cycling.

关键词： graphene aerogel partial infusion fast-charging dendrite-free Li metal anodes

Characterization of combined blast-and fragments-induced synergetic damage in polyurea coated liquid-filled container

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Defence Technology(防务技术) 2025年第1期43卷 201-224页

作者： Chen Tao Chong Ji Xin Wang Juan gu yuting Wang Changxiao Zhao College of Field Engineering Army Engineering University of PLANanjing210007China College of Defense Engineering Army Engineering University of PLANanjing211101China

Liquid-filled containers(LFC)are widely used to store and transport petroleum,chemical reagents,and other *** an important target of military strikes and terrorist bombings,LFC are vulnerable to blast waves and *** explore the protective effect of polyurea elastomer on LFC,the damage characteristics of polyurea coated liquid-filled container(PLFC)under the combined loading of blast shock wave and fragments were studied *** microstructure of the polyurea layer was observed by scanning electron microscopy,and the fracture and self-healing phenomena were *** simulation approach was used to explain the combined blast-and fragments-induced on the PLFC in ***,the effects of shock wave and fragment alone and in combination on the damage of PLFC were comprehensively *** showed that the polyurea reduces the perforation rate of the fragment to the LFC,and the self-healing phenomenon could also reduce the liquid loss rate inside the *** polyurea reduces the degree of depression in the center of the LFC,resulting in a decrease in the distance between adjacent fragments penetrating the LFC,and an increase in the probability of transfixion and fracture between *** the close-in blast,the detonation shock wave reached the LFC before the *** does not all have an enhanced effect on the protection of *** presence of internal water enhances the anti-blast performance of the container,and the hydrodynamic ram(HRAM)formed by the fragment impacting the water aggravated the plastic deformation of the *** combined action has an enhancement effect on the deformation of the *** depth of the container depression was 27%higher than that of the blast shock wave alone;thus,it cannot be simply summarized as linear superposition.

关键词： Polyurea Prefabricated fragment Liquid-filled container Hydrodynamic ram Cumulative effect

ECM-mimicking composite hydrogel for accelerated vascularized bone regeneration

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Bioactive Materials 2024年第12期42卷 241-256页

作者： guanglong Li Fei Gao Donglei Yang Lu Lin Weijun Yu Jiaqi Tang Ruhan Yang Min Jin yuting gu Pengfei Wang Eryi Lu Department of Stomatology Renji HospitalShanghai Jiao Tong University School of Medicine160 Pujian RoadShanghai200127China Institute of Molecular Medicine Shanghai Key Laboratory for Nucleic Acid Chemistry and NanomedicineRenji HospitalShanghai Jiao Tong University School of Medicine160 Pujian RoadShanghai200127China

Bioactive hydrogel materials have great potential for applications in bone tissue ***,fabrication of functional hydrogels that mimic the natural bone extracellular matrix(ECM)remains a challenge,because they need to provide mechanical support and embody physiological cues for angiogenesis and *** by the features of ECM,we constructed a dual-component composite hydrogel comprising interpenetrating polymer networks of gelatin methacryloyl(GelMA)and deoxyribonucleic acid(DNA).Within the composite hydrogel,the GelMA network serves as the backbone for mechanical and biological stability,whereas the DNA network realizes dynamic capabilities(e.g.,stress relaxation),thereby promoting cell proliferation and osteogenic ***,functional aptamers(Apt19S and AptV)are readily attached to the DNA network to recruit bone marrow mesenchymal stem cells(BMSCs)and achieve sustained release of loaded vascular endothelial growth factor towards *** results showed that the composite hydrogel could facilitate the adhesion of BMSCs,promote osteogenic differentiation by activating focal adhesion kinase(FAK)/phosphatidylinositol 3-kinase(PI3K)/protein kinase B(Akt)/β-Catenin signaling pathway,and eventually enhance vascularized bone *** study shows that the multifunctional composite hydrogel of GelMA and DNA can successfully simulate the biological functions of natural bone ECM and has great potential for repairing bone defects.

关键词： Composite hydrogel DNA hydrogel Stress relaxation Osteogenesis Vascularization

Inflammation-induced inhibition of chaperone-mediated autophagy maintains the immunosuppressive function of murine mesenchymal stromal cells

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Cellular & Molecular Immunology 2021年第6期18卷 1476-1488页

作者： Jie Zhang Jiefang Huang yuting gu Mingxing Xue Fengtao Qian Bei Wang Wanlin Yang Hongshuang Yu Qiwei Wang Xin guo Xinyuan Ding Jina Wang Min Jin Yanyun Zhang CAS Key Laboratory of Tissue Microenvironment and Tumor Shanghai Institute of Nutrition and HealthShanghai Institutes for Biological SciencesChinese Academy of SciencesShanghaiChina Pediatric Institute of Soochow University Institutes for Translational MedicineSoochow UniversitySuzhouChina Shanghai Institute of Immunology Shanghai Jiao Tong University School of MedicineShanghaiChina Department of Urology and Shanghai Key Laboratory of Organ Transplantation Zhongshan HospitalFudan UniversityShanghaiChina

Macroautophagy has been implicated in modulating the therapeutic function of mesenchymal stromal cells(MSCs).However,the biological function of chaperone-mediated autophagy(CMA)in MSCs remains ***,we found that CMA was inhibited in MSCs in response to the proinflammatory cytokines interferon-γ(IFN-γ)and tumor necrosis factor-α(TNF-α).In addition,suppression of CMA by knocking down the CMA-related lysosomal receptor lysosomal-associated membrane protein 2(LAMP-2A)in MSCs significantly enhanced the immunosuppressive effect of MSCs on T cell proliferation,and as expected,LAMP-2A overexpression in MSCs exerted the opposite effect on T cell *** effect of CMA on the immunosuppressive function of MSCs was attributed to its negative regulation of the expression of chemokine C-X-C motif ligand 10(CXCL10),which recruits inflammatory cells,especially T cells,to MSCs,and inducible nitric oxide synthase(iNOS),which leads to the subsequent inhibition of T cell proliferation via nitric oxide(NO).Mechanistically,CMA inhibition dramatically promoted IFN-γplus TNF-α-induced activation of NF-κB and STAT1,leading to the enhanced expression of CXCL10 and iNOS in ***,we found that IFN-γplus TNF-α-induced AKT activation contributed to CMA inhibition in *** interestingly,CMA-deficient MSCs exhibited improved therapeutic efficacy in inflammatory liver *** together,our findings established CMA inhibition as a critical contributor to the immunosuppressive function of MSCs induced by inflammatory cytokines nd highlighted a previously unknown function of CMA.

关键词： chaperone-mediated autophagy mesenchymal stromal cells immunosuppressive capacity inflammatory microenvironment

话语视角下大学生社会主义核心价值观认同建构研究

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国家教育行政学院学报 2016年第6期 66-71页

作者：顾瑜婷江苏大学江苏镇江212013

社会主义核心价值观"话语"是孕育和产生社会主义核心价值观说服力、吸引力、引导力的根本,亦是当代大学生对已被构型的价值理想生发自觉认同并付诸实践的关键。在溯源"话语"概念的基础上,分析了话语转换之于社会主义核心价值观"回归生... 详细信息

社会主义核心价值观"话语"是孕育和产生社会主义核心价值观说服力、吸引力、引导力的根本,亦是当代大学生对已被构型的价值理想生发自觉认同并付诸实践的关键。在溯源"话语"概念的基础上,分析了话语转换之于社会主义核心价值观"回归生活教育"的重要意义,凝练提出了话语转换过程中"原创性与诠释性、崇高性与平凡性、民族性与世界性相统一"的基本原则,并结合大学生的"生活世界"提出了社会主义核心价值观话语转换策略。

关键词：社会主义核心价值观话语转换大学生价值观认同

随机波动率模型下基于精确模拟算法的期权计算理论

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同济大学学报（自然科学版） 2017年第10期45卷 1539-1548页

作者：马俊美杨宇婷顾桂定徐承龙上海财经大学数学学院上海200433 应用数学福建省高校重点实验室(莆田学院) 福建莆田351100 上海市金融信息技术研究重点实验室上海200433

基于两类随机波动率模型研究了欧式期权的价格和敏感性估计问题.在Broadie和Kaya的精确模拟算法基础上,讨论了舍取抽样技术在精确模拟算法中的有效应用.在此基础上研究条件蒙特卡罗、对偶变量技术等方差减小技术在欧式期权定价和敏感性G... 详细信息

基于两类随机波动率模型研究了欧式期权的价格和敏感性估计问题.在Broadie和Kaya的精确模拟算法基础上,讨论了舍取抽样技术在精确模拟算法中的有效应用.在此基础上研究条件蒙特卡罗、对偶变量技术等方差减小技术在欧式期权定价和敏感性Greeks计算中的加速问题.数值结果表明,相比欧拉离散和原始的蒙特卡罗模拟算法,基于精确模拟算法的条件蒙特卡罗加速技术能得到无偏且方差更小的估计值,具有较好的误差减小效果.该算法可以很方便地解决其他更加复杂的金融产品的计算问题,如障碍期权的定价和敏感性估计问题、篮子期权的计算问题等.

关键词：随机波动率精确模拟加速条件蒙特卡罗 Greeks

Breaking new ground in photocatalysis:lutetium texaphyrin as a trigger for pyroptosis through biomolecular photoredox reactions

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Science China Chemistry 2025年第1期68卷 1-2页

作者： Qihang Ding Mengrong He Meijia gu Department of Chemistry Korea UniversitySeoul 02841Republic of Korea Department of Ultrasound Medicine Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022China Key Laboratory of Combinatorial Biosynthesis and Drug Discovery(MOE) School of Pharmaceutical SciencesWuhan UniversityWuhan 430071China

Malignant neoplasms consistently pose a significant threat to global public health^([1,2]).In recent years,immunotherapy has demonstrated remarkable clinical success;however,its efficacy is limited by the scarcity of immune cell infiltration within tumor *** pyroptosis,a gasdermin-mediated process characterized by cellular swelling,rupture,and the release of intracellular contents such as IL-1β,IL-18,ATP,HMGB1,plays a crucial role in this context^([3,4]).

关键词： neoplasms clinical rupture

The dopaminergic system and Alzheimer's disease

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Neural Regeneration Research 2025年第9期20卷 2495-2512页

作者： Yuhan Zhang Yuan Liang Yixue gu International Medical College Chongqing Medical UniversityChongqingChina College of Pharmacy Chongqing Medical UniversityChongqingChina Department of Neurology The First Affiliated Hospital of Chongqing Medical UniversityChongqing Key Laboratory of NeurologyChongqingChina

Alzheimer's disease is a common neurodegenerative disorder in older *** its prevalence,its pathogenesis remains unclea *** addition to the most widely accepted causes,which in clude excessive amyloid-beta aggregation,tau hyperphosphorylation,and deficiency of the neurotransmitter acetylcholine,numerous studies have shown that the dopaminergic system is also closely associated with the occurrence and development of this *** is a crucial catecholaminergic neurotransmitter in the human ***-associated treatments,such as drugs that target dopamine receptor D and dopamine analogs,can improve cognitive function and alleviate psychiatric symptoms as well as ameliorate other clinical *** r,therapeutics targeting the dopaminergic system are associated with various adverse reactions,such as addiction and exacerbation of cognitive *** review summarizes the role of the dopaminergic system in the pathology of Alzheimer's disease,focusing on currently available dopamine-based therapies for this disorder and the common side effects associated with dopamine-related *** aim of this review is to provide insights into the potential connections between the dopaminergic system and Alzheimer's disease,thus helping to clarify the mechanisms underlying the condition and exploring more effective therapeutic options.

关键词： adverse drug reaction Alzheimer's disease catecholamine dopamine receptor dopamine receptor heterodimers dopaminergic system neurodegenerative disease neurotransmitter signaling pathways traditional Chinese medicine treatment