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面向数据要素流通的区块链数据加速交换方法

计算机研究与发展 2024年第10期61卷 2554-2569页

作者：李振宇丁勇易晨梁海桂林电子科技大学计算机与信息安全学院广西桂林541004 广西密码学与信息安全重点实验室(桂林电子科技大学) 广西桂林541004 港专学院中国香港999077

随着新一轮科技革命和产业变革的深入发展,安全可靠的数据要素流通已成为当前迫切需要解决的问题.从而,数据交易所已开始使用区块链技术进行数据要素流通,能一定程度提升数据要素流通过程中的信任和监管能力.但区块链技术在面对海量的... 详细信息

随着新一轮科技革命和产业变革的深入发展,安全可靠的数据要素流通已成为当前迫切需要解决的问题.从而,数据交易所已开始使用区块链技术进行数据要素流通,能一定程度提升数据要素流通过程中的信任和监管能力.但区块链技术在面对海量的数据要素交换时仍需进一步研究以提升效率.因此,针对当前基于区块链的数据要素流通过程中效率偏低问题,提出区块链数据加速交换方法.首先,提出数据要素流通动态位置模型,方便数据交易所进行数据流通方向管理.其次,提出数据要素聚合上传方法,实现针对数据要素附带流通目的地的深层次聚合,以进一步加速区块链数据交换.随后,提出可选自动去重下载方法,以解决数据经区块链流通面临的应用问题.最后,通过一系列实验验证,提出的区块链数据加速交换方法能在已启用区块链交易打包等技术的条件下,进一步提升数据要素交换的效率,其相比于区块链框架所提供的异步数据交换方法,能获取约9.24倍的额外数据交换性能.

关键词：数据要素区块链数据流通数据聚合加速交换

Yields,growth and water use under chemical topping in relations to row configuration and plant density in drip-irrigated cotton

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Journal of Cotton Research 2024年第2期7卷 123-136页

作者： Wang Xuejiao Hu yanping Ji Chunrong chen yongfan Sun Shuai Zhang Zeshan Zhang Yutong Wang Sen Yang Mingfeng Ji Fen Guo Yanyun Li Jie Zhang Lizhen Xinjiang Agriculture Network Information Center Xinjiang Agrometeorological ObservatoryUrumqi 830002China College of Resources and Environmental sciences Xinjiang Agricultural UniversityUrumqi 830091China College of Resources and Environmental sciences China Agricultural UniversityBeijing 100193China china Meteorological Administration Institute of Desert MeteorologyUrumqi 830002China Wulanwusu Agrometeorological Station Shihezi 832199China Xinjiang Academy of Agricultural sciences China National Cotton R&D CenterUrumqi 830091China

Background Water deficit is an important problem in agricultural production in arid *** the advent of wholly mechanized technology for cotton planting in Xinjiang,it is important to determine which planting mode could achieve high yield,fiber quality and water use efficiency(WUE).This study aimed to explore if chemical topping affected cotton yield,quality and water use in relation to row configuration and plant *** Experiments were carried out in Xinjiang china,in 2020 and 2021 with two topping method,manual topping and chemical topping,two plant densities,low and high,and two row configurations,i.e.,76 cm equal rows and 10+66 cm narrow-wide rows,which were commonly applied in matching harvest *** topping increased seed cotton yield,but did not affect cotton fiber quality comparing to traditional manual *** equal row spacing,the WUE in higher density was 62.4%higher than in the lower ***,under narrow-wide row spacing,the WUE in lower density was 53.3%higher than in higher one(farmers’practice).For machine-harvest cotton in Xinjiang,the optimal row configuration and plant density for chemical topping was narrow-wide rows with 15 plants m-2 or equal rows with 18 plants *** The plant density recommended in narrow-wide rows was less than farmers’practice and the density in equal rows was moderate with local *** results provide new knowledge on optimizing agronomic managements of machine-harvested cotton for both high yield and water efficient.

关键词： Yield components Fiber quality Transpiration Water use efficiency Heat ratio method(HRM)

Pyrotinib and chrysin synergistically potentiate autophagy in HER2-positive breast cancer

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Signal Transduction and Targeted Therapy 2024年第1期9卷 295-307页

作者： Xiaoxiao Liu Xing Zhang Zhiying Shao Xiaorong Zhong Xin ding Liang Wu Jie chen Ping He Yan cheng Kunrui Zhu Dan Zheng Jing Jing Ting Luo Institute for Breast Health Medicine Cancer CenterBreast CenterWest China HospitalSichuan University610041 ChengduSichuanChina department of Radiation Oncology Cancer CenterAffiliated Hospital of Xuzhou Medical UniversityJiangsu Center for the Collaboration and Innovation of Cancer BiotherapyCancer InstituteXuzhou Medical University221000 XuzhouChina department of Orthopedics Trauma and Reconstructive SurgeryUniversity Hospital RWTH AachenAachen 52074Germany Cancer Institute Xuzhou Medical University221000 XuzhouJiangsuChina Division of Nephrology and Transplantation Department of Internal MedicineUniversity Medical Center Rotterdam Erasmus MCRotterdam 3015 GDThe Netherlands Institute for Breast Health Medicine Department of General SurgeryBreast CenterWest China HospitalSichuan University610041 ChengduSichuanChina Institute for Breast Health Medicine West China HospitalSichuan University610041 ChengduSichuanChina

Human epidermal growth factor receptor 2(HER2)-positive breast cancer(BC)has been the most challenging subtype of BC,consisting of 20%of BC with an apparent correlation with poor *** that pyrotinib,a new HER2 inhibitor,has led to dramatic improvements in prognosis,the efficacy of pyrotinib monotherapy remains largely restricted due to its acquired ***,identifying a new potential antitumor drug in combination with pyrotinib to amplify therapeutic efficacy is a pressing ***,we reported a novel combination of pyrotinib with chrysin and explored its antitumor efficacy and the underlying mechanism in HER2-positive *** determined that pyrotinib combined with chrysin yielded a potent synergistic effect to induce more evident cell cycle arrest,inhibit the proliferation of BT-474 and SK-BR-3 BC cells,and repress in vivo tumor growth in xenograft mice *** may be attributed to enhanced autophagy induced by endoplasmic reticulum ***,the combined treatment of pyrotinib and chrysin induced ubiquitination and glucose-6-phosphate dehydrogenase(G6PD)degradation by upregulating zinc finger and BTB/POZ domain-containing family protein 16(ZBTB16)in tumorigenesis of ***,we identified that miR-16-5p was a potential upstream regulator of ZBTB16,and it showed a significant inverse correlation with *** of miR-16-5p overexpression by restoring ZBTB16 significantly potentiated the overall antitumor efficacy of pyrotinib combined with chrysin against HER2-positive ***,these findings demonstrate that the combined treatment of pyrotinib and chrysin enhances autophagy in HER2-positive BC through an unrecognized miR-16-5p/ZBTB16/G6PD axis.

关键词： HER2 synergistic Together

The boundedness for commutators of maximal hypersingular integrals with rough kernels

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science china mathematics 2013年第4期56卷 707-728页

作者： chen yanping ding yong LI Ran department of Applied mathematics University of Science and Technology Beijing School of Mathematical sciences Beijing Normal University Laboratory of mathematics and Complex Systems(BNU) Ministry of Education

In this paper,we prove that the commutators of maximal hypersingular integrals with rough kernels are bounded from the Sobolev space Lpγ(Rn) to the Lebesgue space Lp(Rn),which is a substantial improvement and an exte... 详细信息

关键词： commutator maximal hypersingular integrals rough kernel BMO sobolev space

Experimental and Simulation Study on Enhancing Thermal Energy Storage and Heat Transfer Performance of Ternary Chloride Eutectic Salt by Doping MgO Nanoparticles

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Journal of Thermal science 2024年第06期33卷 2221-2234页

作者： WEI Xiaolan chen Dandan ZHANG Xuechuan WANG Weilong LU Jianfeng ding Jing LIU Shule School of Chemistry and Chemical Engineering South China University of Technology School of Materials science and Engineering Sun Yat-sen University

Molten salt-based nanofluids exhibit more efficient heat storage and transfer performance than the same pure base molten salt（BS）.In this work,nanofluids were prepared by dispersing nano-MgO in chloride BS（NaCl:CaCl2:MgCl2=53:15:32,mole fraction） to improve its thermophysical properties,and the improvement mechanism was explored by molecular dynamics（MD） *** all the nanofluids,the nanofluid doped with 2.5%（mass fraction） 20-nm MgO has the best thermal property,with its specific heat capacity cpincreased by 38.2%.After heating at 600℃ for 1000 hours,the heat storage performance of the nanocomposite samples did not *** analysis of microstructures by MD shows that there exists a semi-solid liquid layer at the interface between nano-MgO and the molten salt due to the strong interactions between nanoparticles and molten *** contributes to enhancing the thermal storage capacity of *** number density and specific heat capacity both decrease as particle size *** the experimental and simulation result analysis,the possible mechanism of enhancing the specific heat capacity of nanofluids is *** nanofluid prepared in this work can serve as potential heat storage/transfer materials in concentrating solar power systems,and the heat storage/transfer mechanism proposed in this work is also helpful for understanding the thermophysical properties of other molten salt nanofluids.

关键词： chloride molten salt nanofluid specific heat capacity molecular dynamics simulation TRANSPORT-PROPERTIES NANOFLUIDS DYNAMICS CONDUCTIVITY DISPERSION CAPACITY

Inhibiting the phase transition of WO_(3)for highly stable aqueous electrochromic battery

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Journal of Energy Chemistry 2024年第8期95卷 86-95,I0003页

作者： Zhisheng Wu Zhendong Lian Ting ding Jielei Li Jincheng Xu Jinxiao Wang Liangxing Zhang Bo Wang Shi chen Peng Xiao Hua Xu Shuang-Peng Wang Kar Wei Ng Joint Key Laboratory of the Ministry of Education Institute of Applied Physics and Materials EngineeringUniversity of MacaoAvenida da UniversidadeMacao 999078China School of Applied Physics and Materials Wuyi UniversityJiangmen 529020GuangdongChina Guangdong-Hong Kong-Macao Joint Laboratory for Intelligent Micro-Nano Optoelectronic technology School of Physics and Optoelectronic EngineeringFoshan UniversityFoshan 528225GuangdongChina Guangzhou New Vision Optoelectronic technology Co. Ltd.Guangzhou 510530GuangdongChina

Aqueous electrochromic battery(ECB)has shown intense potential for achieving energy storage and saving *** tungsten oxide(WO_(3))is the most promising EC material for commercialization,the cycling stability of WO_(3)-based aqueous ECBs is currently unsatisfactory due to the repeated phase transition during the redox process and the corrosion by acidic ***,we present a titanium-tungsten oxide alloy(Ti-WO_(3))with controllable morphology and crystal phase synthesized by a facile hot injection method to overcome the *** contrast to conventional monoclinic WO_(3),the Ti-WO_(3)nanorods can stably maintain their cubic crystal phase during the redox reaction in an acidic electrolyte,thus leading to dramatically enhanced response speed and cycling stability,Specifically,when working in a well-matched hybrid Al^(3+)/Zn^(2+)aqueous electrolyte,our phasetransition-free cubic Ti-WO_(3)exhibits an ultra-high cycling stability(>20000 cycles),fast response speed(3,95 s/4,65 s for bleaching/coloring),as well as excellent discharge areal capacity of 214.5 mA h m^(-2),We further fabricate a fully complementa ry aqueous electrochromic device,for the first time,using a Ti-WO_(3)/Prussian blue device ***,the complementary ECB shows>10000 stable operation cycles,attesting to the feasibility of our Ti-WO_(3)for practical *** work validates the significance of inhibiting the phase transitions of WO_(3)during the electrochromic process for realizing highly cyclable aqueous ECB,which can possibly provide a generalized design guidance for other high-quality metallic oxides for electrochemical applications.

关键词： Aqueous electrochromic battery Ti-WO_(3) Phase transition Long-term stability

Study on Microstructure and Thermal Stability Behavior of Rapidly Solidified Al-Fe-Ce Alloy

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Rare Metals 2000年第3期19卷 178-页

作者： chen Yiqing,Su yong,ding Houfu and Zheng Yuchun (department of Materials science & technology,Hefei university of technology,Hefei 230009) department of Materials science & technology Hefei University of TechnologyHefei 230009

Rapidly solidified Al 8Fe 4Ce alloy was prepared by melt *** quenched and as annealed microstructures were studied by TEM and energy dispersive spectrum *** microhardness of the alloy at different annealing temperature was *** results obtained indicated that as quenched microstructure varied with different cooling *** microstructure annealed at 300℃ was much the same as that of the as *** dispersed phases at grain boundary of the microstructure annealed at 400℃ became *** annealing at 450℃ for 2 hours,the primary phase and the intercellular dispersed phases,metastable phase Al 6Fe and Al 20 Fe 5Ce respectively,coarsened *** soften temperature was deduced at over 300℃ by measuring microhardness.

关键词： Rapid solidification Al Fe Ce alloy Microstructure Annealed microstructure Microhardness

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先进压缩空气储能系统的基础研究与应用进展

Engineering 2024年第3期34卷 246-269页

作者： Xinjing Zhang Ziyu Gao Bingqian Zhou Huan Guo Yujie Xu Yulong ding Haisheng chen Institute of Engineering Thermophysics Chinese Academy of SciencesBeijing 100190China university of Chinese Academy of sciences Beijing 100049China Birmingham Centre for Energy Storage&School of Chemical Engineering University of BirminghamBirmingham B152TTUK

Decarbonization of the electric power sector is essential for sustainable ***-carbon generation technologies,such as solar and wind energy,can replace the CO_(2)-emitting energy sources(coal and natural gas plants).As a sustainable engineering practice,long-duration energy storage technologies must be employed to manage imbalances in the variable renewable energy supply and electricity *** air energy storage(CAES)is an effective solution for balancing this mismatch and therefore is suitable for use in future electrical systems to achieve a high penetration of renewable energy *** study introduces recent progress in CAES,mainly advanced CAES,which is a clean energy technology that eliminates the use of fossil fuels,compared with two commercial CAES plants at Huntorf and McIntosh which are conventional ones utilizing fossil *** CAES include adiabatic CAES,isothermal CAES,liquid air energy storage,supercritical CAES,underwater CAES,and CAES coupled with other *** principles and configurations of these advanced CAES technologies are briefly discussed and a comprehensive review of the state-of-the-art technologies is presented,including theoretical studies,experiments,demonstrations,and *** comparison and discussion of these CAES technologies are summarized with a focus on technical maturity,power sizing,storage capacity,operation pressure,round-trip efficiency,efficiency of the components,operation duration,and investment *** application trends were *** paper presents a comprehensive reference for developing novel CAES systems and makes recommendations for future research and development to facilitate their application in several areas,ranging from fundamentals to applications.

关键词： Compressed air energy storage Fundamentals Applications Technological parameters Comparison

WEIGHTED NORM INEQUALITIES FOR COMMUTATORS OF THE KATO SQUARE ROOT OF SECOND ORDER ELLIPTIC OPERATORS ON R^(n)

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Acta Mathematica Scientia 2022年第4期42卷 1310-1332页

作者： yanping chen yong ding Kai ZHU department of Applied mathematics School of Mathematics and PhysicsUniversity of Science and Technology BeijingBeijing 100083China Laboratory of mathematics and Complex Systems School of Mathematical SciencesBeijing Normal UniversityMinistry of Education of ChinaBeijing 100875China School of Mathematical sciences University of Chinese Academy of SciencesBeijing 100049China

Let L=-div(A▽) be a second order divergence form elliptic operator with bounded measurable coefficients in R^(n).We establish weighted L^(p) norm inequalities for commutators generated by √L and Lipschitz functions,where the range of p is different from(1,∞),and we isolate the right class of weights introduced by Auscher and *** this work,we use good-λ inequality with two parameters through the weighted boundedness of Riesz transforms ▽L^(-1/2).Our result recovers,in some sense,a previous result of Hofmann.

关键词： Muckenhoupt weights commutator Kato square root Lipschitz function elliptic operators