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La-doped NiFe-LDH coupled with hierarchical vertically aligned MXene frameworks for efficient overall water splitting

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Journal of Energy Chemistry 2022年第7期31卷 472-479,I0012页

作者： Mengzhou Yu Jiqi Zheng ming guo School of Chemical Engineering Dalian University of TechnologyDalian 116024LiaoningChina College of Environment and Chemical Engineering Dalian UniversityDalian 116622LiaoningChina Shanghai Institute of Space Power-Sources Shanghai 200245China

The development of stable electrocatalysts with high hydrogen and oxygen evolution reactions (HER and OER) activity in alkaline electrolytes is critical to renewable energy conversion technologies,such as electrochemical water *** this work,a novel strategy for engineering water splitting electrocatalysts in alkaline electrolyte was developed by synergistically coupling La-doped Ni Fe-layered double hydroxides (Ni Fe-LDH) nanosheets onto three-dimensional (3D) vertically aligned MXene nanosheets on macroporous nickel foam (NF) substrates (Ni Fe La-LDH/v-MXene/NF).The electrocatalytic performance of the prepared Ni Fe La-LDH/v-MXene/NF is enhanced by the synergy of strong electronic interaction among multiple metal centers and unique vertically aligned porous MXene with increased active surface area,accelerated reaction kinetics and improved water adsorption and dissociation *** reach the commercially required current density (500 m A cm^(-2)),the Ni Fe La-LDH/v-MXene/NF exhibits greatly reduced overpotentials of 233 and 255 m V for HER and OER,respectively,along with excellent ***,an alkaline electrolyzer driven by Ni Fe La-LDH/v-MXene/NF delivers a lower cell voltage(1.71 V) compared with that of Pt/C-RuO_(2) couple to achieve the current density of 500 m A cm^(-2).

关键词： Bifunctional electrocatalyst MXene Layered double hydroxide Lanthanum Overall water splitting

Physical Properties of Polymers under Soft and Hard Nanoconfinement: A Review

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Chinese Journal of Polymer Science 2020年第6期38卷 565-578页

作者： ming-Chao Ma Yun-Long guo University o f Michigan-Shanghai Jiao Tong University Joint Institute Shanghai Jiao Tong UniversityShanghai 200240China School of Materials Science and Engineering Shanghai Jiao Tong UniversityShanghai200240China

Polymeric materials under nanoconfinements have substantially deviated physical properties with respect to the bulk,especially glass transition temperature,physical aging,and crystallization *** we highlight the leading methods for creating various confinement *** these systems,recent advances on hard and soft confinement effect for glass transition,physical aging,mechanical properties and crystallization of polymers are reviewed in ***,as nanoconfined systems in extreme conditions are experimentally inaccessible,simulation results describing confinement effect on such systems are also discussed.

关键词： Nanoconfinement Glass transition temperature Physical aging Mechanical properties Crystallization

丹酚酸B调控脂质代谢改善非酒精性脂肪肝实验研究

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中国药理学通报 2025年第1期41卷 107-115页

作者：张佳健郭梦茹梅金玉陈明安徽医科大学基础医学院药理学教研室安徽合肥230032 安徽医科大学第二附属医院耳鼻喉科安徽合肥230601

目的探讨丹酚酸B(SalB)可能通过调控Lcn2改善非酒精性脂肪肝的作用。方法体内实验,8周龄♂C57BL/6J小鼠用普通维持饲料喂养,作为对照组,8周龄ApoE-/-小鼠用高脂饲料喂养,随机分为模型组和SalB组。在饲养8周后,SalB组小鼠用SalB灌胃,低... 详细信息

目的探讨丹酚酸B(SalB)可能通过调控Lcn2改善非酒精性脂肪肝的作用。方法体内实验,8周龄♂C57BL/6J小鼠用普通维持饲料喂养,作为对照组,8周龄ApoE-/-小鼠用高脂饲料喂养,随机分为模型组和SalB组。在饲养8周后,SalB组小鼠用SalB灌胃,低剂量为15 mg·kg^(-1)·d^(-1),高剂量为30 mg·kg^(-1)·d^(-1),对照组和模型组用等剂量生理盐水灌胃。肝脏转录组测序结果揭示模型组和SalB组的差异表达基因,HE染色、油红O染色观察肝组织的病理变化,试剂盒检测血清和肝组织的脂质、氧化应激和炎症指标,RT-qPCR检测Lcn2、SREBP-1C以及脂质合成相关酶的mRNA水平。体外实验,用棕榈酸(PA)诱导L02和LX-2细胞24 h建立NAFLD模型,用SalB(30μmol·L^(-1))和PA(0.2 mmol·L^(-1))共孵育检测SalB体外改善NAFLD的情况。试剂盒检测L02细胞TC、TG的含量,细胞油红O染色试剂盒检测L02细胞的脂质积累,RT-qPCR检测LX-2细胞Lcn2、SREBP-1C以及脂质合成相关酶基因的mRNA水平。结果模型组血清、肝脏的生化指标异常,肝组织脂质、炎症和氧化应激水平升高,出现大面积脂肪空泡和大量的脂质沉积,PA诱导的L02细胞也出现大量的脂质积累,在SalB干预后均有明显改善。转录组测序结果表明SalB可以调控肝脏脂质代谢和炎症。肝脏和LX-2细胞mRNA水平显示模型组Lcn2、SREBP-1C以及脂质合成相关酶基因表达明显上调,SalB干预后均能降低这些基因的表达。结论丹酚酸B可以明显改善非酒精性脂肪肝,其机制可能是通过下调Lcn2、SREBP-1C和脂质合成酶的表达。

关键词： SalB 非酒精性脂肪肝脂质代谢 Lcn2 SREBP-1C 脂质合成相关酶

A distribution prior model for airplane segmentation without exact template

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Journal of Systems Engineering and Electronics 2020年第1期31卷 56-63页

作者： DAI ming ZHOU Zhiheng guo Yongfan School of Electronics and Information Engineering South China University of Technology

In many practical applications of image segmentation problems,employing prior information can greatly improve segmentation *** paper continues to study one kind of prior information,called prior *** this research,there is no exact template of the object;instead only several samples are *** proposed method,called the parametric distribution prior model,extends our previous model by adding the training procedure to learn the prior distribution of the *** this paper establishes the energy function of the active contour model(ACM)with consideration of this parametric form of prior ***,during the process of segmenting,the template can update itself while the contour *** are performed on the airplane data *** results demonstrate the potential of the proposed method that with the information of prior distribution,the segmentation effect and speed can be both improved efficaciously.

关键词： image segmentation active contour model(ACM) prior distribution level set method

EXPERIMENTAL STUDY ON THE EFFECTS OF AIR ENTRAINMENT ON A PLANE JET DIFFUSION IN A PLUNGE POOL

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Journal of Hydrodynamics 1999年第2期11卷 32-37页

作者： guo, Yakun Luo, ming Sichuan univ Chengdu China

Laboratory experimental results about the effects of air entrainment on the jet diffusion in a plunge pool were presented. The results indicate that the air entrainment has little effect on the maximum mean impinging pressure generated by the jet at pool bottom. The maximum fluctuating pressure is increased with the increase of the air entrainment. Air entrainment also reduces jet spreading.

关键词： Air ejectors Energy dissipators Jet engines Jets Pressure effects Pressure measurement Velocity measurement

Breaking the final barrier in reproductive animal cloning: macaque monkeys cloned

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National Science Review 2018年第3期5卷 301-303页

作者： Hongjun Song guo-li ming Department of Neuroscience and Mahoney Institute for Neurosciences Department of Cell and Developmental Biology Institute for Regenerative Medicine University of Pennsylvania

Animal models are essential in research aiming to understand human biology and diseases,yet far too often clinical trials fail with drugs and therapeutic approaches that have been developed through,tested and built up... 详细信息

关键词： Breaking the final barrier in reproductive animal cloning macaque monkeys cloned

A Mn-porphyrinic metal–organic framework immobilizing glucose oxidase for combined photodynamic/chemodynamic/starvation therapy

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Tungsten 2025年第1期 183-194页

作者： Xin-Ran Sun Hao-ming Yuan guo-Da Zhang Chao Wang Shu-Juan Sun Peng-Fei Shi Shandong Provincial Key Laboratory of Detection Technology for Tumor Markers School of Chemistry and Chemical Engineering Linyi University

The combination of photodynamic therapy（PDT） and chemodynamic therapy（CDT） in tumor treatment has attracted considerable ***,tumor hypoxia and glutathione（GSH） overproduction in the tumor tissue restricted the progress of their ***,a Mn-porphyrinic metal-organic framework（Mn-TCPP） was constructed by the one-pot method and further used for immobilizing glucose oxidase（GOx） to obtain GOx@*** would rapidly exhaust endogenous glucose into hydrogen peroxide（H2O2） and gluconic acid,thus shutting off the energy supply of tumor cells for starvation ***-TCPP catalyzed H2O2to produce oxygen,regulating the hypoxic tumor microenvironment and in turn improving1O2generation under laser ***,Mn-TCPP can reduce reactive oxygen species consumption owing to the redox reaction between Mn3+and GSH,thus greatly enhancing ***,benefiting from GOx-mediated starvation therapy,Mn2+produced by Mn3+reduction can react with sufficient intracellular H2O2to generate ·OH with high cytotoxicity through a Fenton-like *** treatment by GOx@Mn-TCPP under laser irradiation in vitro,the cell viability of 4T1 and A549 tumor cells reached to 20%,reflecting GOx@Mn-TCPP could give full play to the advantages of PDT/CDT/starvation *** results in vivo demonstrated that GOx@Mn-TCPP mediated synergistic cascade therapy could significantly inhibit tumor growth and improve the therapeutic effect.

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Research on three-dimensional trajectory parameter measurement of industrial products

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仪器仪表学报 2007年第6期28卷 999-1002页

作者： guo Qing guo ming Hu Jingquan Hu Hongzhi Guilin University of Electronic Technology Guilin 541004 China Surfcontrol Pty Ltd Australia

Three-dimensional trajectory parameter measurement of industrial products is the key technical criteria that drives the product *** has recently become one of the hotspots in the measurement *** paper presents a method for measuring the eyeglass frame parameters using the inner trajectory as measurement *** three-dimensional parameters can be measured and calculated from top view and front *** preprocessing is performed to ensure the reliability of data *** necessary derivation and explanation for formulas of important parameters are provided.A standard square board is used as the template and is measured multi-times to verify the measurement *** experimental data are processed and the type A uncertainty is calculated,which concludes that the measurement results are convincible and comply with the product standard,and the proposed method is correct and the design requirements are met.

关键词：工业产品三维轨迹参数曲率镜片结构测量

Designing Bézier surfaces minimizing the L^2-norm of the Gaussian curvature

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2007年第1期8卷 142-148页

作者： MO guo-liang WU ming-hua Department of Information and Computational Science Zhejiang University City College Hangzhou 310015 China

In freeform surface modelling, developable surfaces have much application value. But, in 3D space, there is not always a regular developable surface which interpolates the given boundary of an arbitrary piecewise smooth closed curve. In this paper, tensor product Bézier surfaces interpolating the closed curves are determined and the resulting surface is a minimum of the functional defined by the L2-integral norm of the Gaussian curvature. The Gaussian curvature of the surfaces is minimized by the method of solving nonlinear optimization problems. An improved approach trust-region form method is proposed. A simple application example is also given.

关键词： ensor product polynomial surfaces Gaussian curvature L^2-integral norm Texture mapping Nonlinear optimization