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Synergistic Promotion of Electrical, Mechanical and Thermal Properties for Silicone Rubber-based Field Grading Material via Compound Modification

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CSEE Journal of Power and Energy Systems 2024年第1期10卷 337-350页

作者： Jiale wu Yangzhi Gong Peiqi xiong Zexi Xing Xiaofeng Xue Xiao Yang Boyang Shen Xingming Bian State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University102206 BeijingChina State Grid Fuzhou Electric Power Supply Company Fuzhou 350009Fujian ProvinceChina Electrical Engineering division University of CambridgeCambridge CB30FAUK

Use of nonlinearconductive SiC/silicone rubber(SR)field grading material(FGM)can improve the local field concentration of composite *** large volume fraction and large-size SiC particles(SiCp)into SR can obtain a good field grading effect,but it is accompanied by the deterioration of mechanical *** SiC with different shapes can solve this *** incorporating one-dimensional SiC whiskers(SiCw)to synergize with granular SiCp,SiC/SR FGM with better field-dependent conductivity,mechanical properties and thermal conductivity than large-size SiCp and large volume fraction filling case can be obtained by using smaller size SiCp and lower filling *** simulations of 500 kv line insulators show that the modified SiC/SR FGM can reduce the maximum field strength along the insulator surface and at sheath-core rod interfaces by 55%and 71.4%,*** combined application of FGM and grading ring can achieve a complementary *** FGM to partially replace the role of the grading rings,the field strength indicators can still meet the operational requirements after the tube radius and shielding depth of the grading rings at both ends are reduced by 36.2%and 40%separately,which is a benefit to alleviating the problems of high weight and large volume faced by traditional field grading methods.

关键词： Compound modification electric field regulation field grading material field-dependent conductivity mechanical properties thermal conductivity

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Evolution of Cenozoic sedimentary architecture in Central and Southern South China Sea basins

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Journal of Palaeogeography 2024年第1期13卷 35-53页

作者： wu Tang Xiao-Jun Xie Yi-Bo Wang Lian-Qiao xiong Jia Guo Xin Li China National offshore oil Corporation Research Institute Beijing 100028China

The Central and Southern South China Sea(CSSCS) has a complex tectonic dynamic background and abundant oil and gas resources, which has always been a hot topic of academic and industrial ***, systematic analyses are still lacking regarding its sediment filling structure and evolution, mostly due to limited borehole penetration and poor quality of seismic reflection data for deeply buried sequences. No consensus has been reached yet on the sedimentary infilling processes, which impeded the reconstruction of the palaeogeography of Southeast Asia and the oil-and-gas exploration undertakings. Here, we illustrate the Cenozoic sedimentary evolution of the CSSCS region by synthesizing relevant data from previous literature and.our own observations and displaying the evolution of depositional systems in sequential reconstructions. Besides, the controlling factors of preferred sedimentary scenarios in the CSSCS incorporate the latest interpretations of the spreading of South China Sea(SCS) as well as the demise of the hypothetical Proto-South China Sea(PSCS). The results show that there are three types of sedimentary basins in the CSSCS(foreland,strike-slip, and rift basins) with different sedimentary filling structures. The foreland basins formed a depositional pattern of ‘transition from deep water to shallow water environments', dominated by deep-water depositional systems which were formed before the Early oligocene with submarine fans developed. Later,the foreland basins were gradually dominated by shallow-water depositional systems with deltas and shallow marine facies. The strike-slip basins showed the depositional architecture of ‘transition from lake to marine environments', i.e. the basins were dominated by lacustrine deposits during the Eocene and evolved into the marine depositional environment since oligocene with delta developed in the western part of the basin. The depositional evolution of rift basins illustrated the characteristics of 'transiti

关键词： Central and Southern South China Sea Sedimentary filling Main controlling factors Proto-South China Sea South China Sea

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Inhaled multilevel size-tunable,charge-reversible and mucus-traversing composite microspheres as trojan horse:Enhancing lung deposition and tumor penetration

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Chinese Chemical Letters 2024年第9期35卷 273-278页

作者： Lishan xiong Xinyuan Li Xiaojie Lu Zhendong Zhang Yan Zhang Wen wu Chenhui Wang Chongqing Key Laboratory of Natural Product Synthesis and drug Research School of Pharmaceutical SciencesChongqing UniversityChongqing 401331China Chongqing Key Laboratory of High Active Traditional Chinese drug delivery System Chongqing Engineering Research Center of Pharmaceutical SciencesChongqing Medical and Pharmaceutical CollegeChongqing 404120China

dry powder inhalation represents a promising approach for the treatment of lung cancer,offering several advantages such as enhanced targeting,improved bioavailability,and reduced ***,traditional dry powder formulations suffer from limitations,notably low pulmonary delivery efficiency and inadequate penetration into tumor tissues,thereby limiting their therapeutic *** response to these challenges,we have developed an innovative trojan horse strategy,harnessing an inhalable nanoparticlein-microsphere system characterized by tunable size,reversible charge,and mucus-penetrating *** inhalable nanoparticle-in-microsphere system exhibit stable structural properties,excellent environmental responsiveness and high *** importantly,the therapeutic effect of MTX@PAMAM@HA@Gel(MPHG)was demonstrated in vitro and in *** system offers improved pulmonary delivery efficiency,enhanced drug retention within tumor tissues,and effective penetration,thus representing a promising strategy in lung cancer treatment.

关键词： Pulmonary delivery Size-tunable nanoparticles Charge-reversible nanoparticles Mucus penetration Lung cancer

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Evaluation of molecular residual disease in operable non-small cell lung cancer with gene fusions,MET exon skipping or de novo MET amplification

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Frontiers of Medicine 2024年第4期18卷 735-743页

作者： Rui Fu Yuanyuan xiong Miao Cai Fang Li Rongrong Chen Yilong wu Wenzhao Zhong School of Medicine South China University of TechnologyGuangzhou510006China Guangdong Lung Cancer Institute Guangdong Provincial Key Laboratory of Translational Medicine in Lung CancerGuangdong Provincial People’s Hospital(Guangdong Academy of Medical Sciences)Southern Medical UniversityGuangzhou510080China Geneplus-Beijing Beijing102206China

Gene fusions and MET alterations are rare and difficult to detect in plasma *** clinical detection efficacy of molecular residual disease(MRd)based.on circulating tumor dNA(ctdNA)in patients with non-small cell lung cancer(NSCLC)with these mutations remains *** prospective,non-intervention study recruited 49 patients with operable NSCLC with actionable gene fusions(ALK,RoS1,RET,and FGFR1),MET exon 14 skipping or de novo MET *** analyzed 43 tumor tissues and 111 serial perioperative plasma samples using 1021-and 338-gene panels,*** MRd correlated with a significantly higher recurrence rate(Pding positive predictive values of 100%and 90.9%,and negative predictive values of 82.4%and 86.4%at landmark and longitudinal time points,*** with detectable MRd showed reduced disease-free survival(dFS)compared to those with undetectable MRd(Po harbored tissue-derived fusion/MET alterations in their MRd had reduced dFS compared to those who did not(P=0.05).To our knowledge,this is the first comprehensive study on ctdNA-MRd clinical detection efficacy in operable NSCLC patients with gene fusions and MET *** with detectable tissue-derived fusion/MET alterations in postoperative MRd had worse clinical outcomes.

关键词： ctdNA molecular residual disease operable NSCLC gene fusion MET exon skipping MET amplification

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High performance 2T0C dRAM cells based.on atomic-layer-deposited InAlZno FETs

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Science China(Information Sciences) 2024年第9期67卷 344-345页

作者： Wen xiong Binbin LUo Wei MENG Bao ZHU Xiaohan wu Shi-Jin dING School of Microelectronics Fudan University

Recently, the oxide semiconductor-based 2T0C dynamic random-access memory(dRAM) has shown great potential in monolithic three-dimensional(M3d)-integrated memory,owing to some unique advantages of oxide semiconductors,such as high electron mobility, wide band gap, and compatibility with back-end.of-line(BEoL) processes [1, 2].

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A Research Progress of Co_(2)-Responsive Plugging Channeling Gels

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Energy Engineering 2024年第7期121卷 1759-1780页

作者： Yang xiong Jianxin Liu Xianhao Yi Bangyan Xiao dan wu Biao wu Chunyu Gao Key Laboratory of drilling and Production Engineering for oil and Gas Yangtze UniversityWuhan430100China School of Petroleum Engineering Yangtze UniversityWuhan430100China

In the heterogeneous reservoirs,Co_(2) flooding easily leads to Co_(2) gas channeling,which can seriously affect sweeping efficiency and reduce oil *** thoroughly investigating the advantages and shortcomings of various Co_(2) plugging technologies,this paper focuses on the feasibility of improving conventional water-alternating gas(WAG)through Co_(2)-responsive gel *** on the different chemical reaction mechanisms between the unique chemical structure and Co_(2),changes in the material’s physical and chemical properties can respond to Co_(2).The feasibility of utilizing these property changes for Co_(2)-responsive plugging is *** Co_(2)-responsive gels and gel nanoparticles have been extensively researched in different fields,such as energy,medicine,and *** paper surveys the molecular structures,chemical compositions,response mechanisms,and changes of these Co_(2)-responsive gels,aiming to draw insights into the carbon d.oxide-enhanced.oil recovery(Co_(2)-EoR)***,the key issues and future development direction of Co_(2)-responsive plugging gels were analyzed.

关键词： Gas channeling sweep efficiency Co_(2)-responsive gel Co_(2)-EoR

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Photo-enhanced uranium recovery from spent fuel reprocessing wastewater via S-scheme 2d/0d C_(3)N_(5)/Fe_(2)o_(3) heterojunctions

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SusMat 2024年第2期4卷 41-50页

作者： Qi Meng Linzhen wu Xiaoyong Yang Ying xiong Fanpeng Kong Tao duan State Key Laboratory of Environment-friendly Energy Materials NuclearWaste and Environmental Safety Key Laboratory of DefenseSouthwest University of Science and TechnologyMianyangSichuanChina MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage Harbin Institute of TechnologyHarbinHeilongjiangChina department of Materials Science and Engineering KTH Royal Institute of TechnologyStockholmSweden

Re-extracting environmentally transportable hexavalent uranium from wastew-ater produced by spent fuel reprocessing using the photocatalytic technology is a crucial strategy to avoid uranium pollution and recover nuclear fuel strategic ***,we have designed S-scheme 2d/0d C_(3)N_(5)/Fe_(2)o_(3)heterojunction photocatalysts based.on the built-in electric field and the energy band bend-ing theory,and have further revealed the immobilization process of hexavalent uranium conversion into relatively insoluble tetravalent uranium in terms of thermodynamics and *** to the results,the hexavalent uranium removal and recovery ratios in wastewater are as high as 93.38%and 83.58%,***,C_(3)N_(5)/Fe_(2)o_(3)heterojunctions also exhibit satisfactory cat-alytic activity and selectivity even in the presence of excessive impurity cations(including Na^(+),K^(+),Ca^(^(2+)),Mg^(2+),Sr^(2+),and Eu^(3+))or various organics(such as xylene,tributylphosphate,pyridine,tannic acid,citric acid,and.oxalic acid).It is believed that this work can provide a potential opportunity for S-scheme heterojunction photocatalysts to re-enrich uranium from spent fuel wastewater.

关键词： nuclear wastewater S-scheme heterostructure uranium recovery

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Efficient No_x abatement by passive ad.orption over a Pd-SAPo-34 catalyst prepared by solid-state ion exchange

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Chinese Chemical Letters 2024年第4期35卷 210-213页

作者： Linhui Liu wuwan xiong Mingli Fu Junliang wu Zhenguo Li daiqi Ye Peirong Chen National Engineering Laboratory for VoCs Pollution Control Technology and Equipment Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution ControlSchool of Environment and EnergySouth China University of TechnologyGuangzhou 510006China National Engineering Laboratory for Mobile Source Emission Control Technology China Automotive Technology&Research Center Co.Ltd.Tianjin 300300China

Palladium-exchanged chabazite(Pd-CHA) zeolites as passive No_x ad.orbers(PNAs) enable efficient purification of nitrogen oxides(No_x) in cold-start diesel exhausts. Their commercial application, however,is limited by the lack of facile preparation method. Here, high-performance CHA-type Pd-SAPo-34 zeolite was synthesized by a modified solid-state ion exchange(SSIE) method using Pdo as Pd precursor,and demonstrated superior PNA performance as compared to Pd-SAPo-34 prepared by conventional wetchemistry strategies. Structural characterization using Raman spectroscopy and X-ray diffraction revealed that the SSIE method avoided water-induced damage to the zeolite framework during Pd loading. Mechanistic investigations on the SSIE process by in situ infrared spectroscopy and X-ray photoelectron spectroscopy disclosed that, while Pdo precursor was mainly converted to Pd^(2+) cations coordinated to the zeolite framework by consuming the-oH groups of the zeolite, a portion of Pdo could also undergo thermal decomposition to form highly dispersed Pd~0 clusters in the pore channels. This simplified and scalable SSIE method paves a new way for the cost-effective synthesis of defect-free high-performance Pd-SAPo-34 zeolites as PNA catalysts.

关键词： Pd-SAPo-34 Passive No_x ad.orber Pd loading Solid-state ion exchange Pd transformation

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Metal complexes of bipyridine-functionalized covalent organic frameworks as efficient electrocatalysts for oxygen evolution reaction

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Rare Metals 2024年第7期43卷 3096-3106页

作者： Zhuang-Zhuang wu Tian Xia Ying Liang Yong-Peng Li Zhu-Yin Sui Li-Juan Feng d.o-xiong wu Xin-Long Tian Qi Chen State Key Laboratory of Marine Resource Utilization in South China Sea School of Marine Science and EngineeringHainan UniversityHaikou 570228China School of Chemistry and Chemical Engineering Yantai UniversityZhuhai519041China School of Bioengineering Zhuhai Campus of Zunyi Medical UniversityZhuhai519041China

Electrocatalytic water splitting is considered a clean and practic al method for producing *** this study,CoF-Bpy,a bipyridine-functionalized covalent organic framework(CoF),was prepared via post-synthetic modification,after which electrocatalysts for the oxygen evolution reactions(oER)were formed through coordination to single-or double-transition metals(Fe,Co,Ni,FeCo,FeNi or CoNi).CoF-Bpy@FeNi delivered the best oER performance among the studied electrocatalysts,with an overpotential of 399 mV at 10 mA·cm^(-2)in an alkaline electrolyte(1.0 mol·L^(-1)KoH aqueous).Notably,the electrocatalytic performance of CoF-Bpy@FeNi showed slight degradation during durability testing,which is ascribable to its irreversible benzoquinoline structure and strong metal *** expected,CoF-Bpy@FeNi exhibited a low overpotential of 347 mV at a turnover frequency(ToF)of 0.1 s^(-1),which suggests that CoF-Bpy@FeNi possesses excellent intrinsic electroc atalytic oER ***,density functional theory(dFT)calculations reveal that the Ni site plays a major role,while the Fe site adjusts the electronic structure of the Ni ions,which rationalizes the excellent oER properties of CoF-Bpy@*** study not only provides a simple and efficient method for complexing CoFs with transition metals,but also offers a novel strategy for designing porous organic polymer electrocatalysts.

关键词： Covalent organic framework oxygen evolution reactions(oER)electrocatalyst Nickel-iron synergy Water splitting

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A zero-sum hybrid stochastic differential game with impulse controls

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Science China(Information Sciences) 2024年第11期67卷 285-299页

作者： Siyu LV Zhen wu Jie xiong School of Mathematics Southeast University School of Mathematics Shandong University department of Mathematics and SUSTech International Center for Mathematics Southern University of Science and Technology

In this paper, we study a zero-sum stochastic differential game with the following salient features:(i) the system state is dictated by a hybrid diffusion,(ii) both players use impulse controls, and(iii) the game takes place on an infinite time horizon. First, the dynamic programming principle for the problem is ***, the lower and upper value functions of the game are characterized as the unique viscosity solution of the associated Hamilton-Jacobi-Bellman-Isaacs(HJBI) equation, which turns out to be a coupled system of variational inequalities with bilateral obstacles. Moreover, a verification theorem as a sufficient condition to identify a Nash equilibrium is established. The Nash equilibrium strategies for the two players, indicating when and how it is optimal to intervene, are given in terms of the obstacle part of the HJBI equation.

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