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In-situ surface decoration of RuO_(2) nanoparticles by laser ablation for improved oxygen evolution reaction activity in both acid and alkali solutions

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Journal of Energy Chemistry 2021年第3期30卷 510-518页

作者： Zongpeng Wang Beibei Xiao Zhiping Lin Shijie Shen aijiao xu Zexin Du Yuchao Chen Wenwu Zhong School of Advanced Study Taizhou UniversityTaizhou 318000ZhejiangChina School of Pharmau and Material Engineering Taizhou UniversityTaizhou 318000ZhejiangChina School of Energy and Power Engineering Jiangsu University of Science and TechnologyZhenjiang 212003JiangsuChina

Improving the OER activity of noble metal-based materials is of profound importance to minimize the usage of noble metals and lower the ***,we report considerable improvement on the catalytic activity of RuO_(2) particles for OER in both alkali and acid *** RuO_(2) nanoparticles were treated with a method of pulse laser *** Ru and RuO_(2) clusters were generated at the surface of RuO_(2) nanoparticles after the laser ablation,forming a lychee-shaped *** larger pulse energy RuO_(2) nanoparticles are treated with,the better the OER activity can *** calculations shows that the surface tension induced by the lychee-shaped morphology benefits the OER *** best sample gives an overpotential of 172 mV(at 10 mA cm^(-2))and a Tafel slope of 53.5 mV dec^(-1) in KOH,while an overpotential of 219 mV and a Tafel slope of 44.9 mV dec^(-1) in H_(2)SO_(4),which are of topclass *** work may inspire a new way to develop high-performance electrocatalysts for OER.

关键词： Oxygen evolution reaction Laser ablation RuO_(2)

Ultralow-temperature assisted synthesis of single platinum atoms anchored on carbon nanotubes for efficiently electrocatalytic acidic hydrogen evolution

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Journal of Energy Chemistry 2020年第12期29卷 280-292页

作者： Wenwu Zhong Wenguang Tu Zongpeng Wang Zhiping Lin aijiao xu Xiufang Ye Dongchu Chen Beibei Xiao Department of Materials Taizhou UniversityTaizhou 318000ZhejiangChina School of Energy and Power Engineering Jiangsu University of Science and TechnologyZhenjiang 212003JiangsuChina School of Material Science and Energy Engineering Foshan UniversityFoshan 528001GuangdongChina School of Mechanical df Aerospace Engineering Nanyang Technological UniversitySingapore637459Singapore

Although platinum(Pt) is highly active for hydrogen evolution reaction(HER)[1], it is crucial to explore the effective approach for minimizing the Pt loading amount in the practical application. Herein, one ultralow-temperature solution reduction approach is developed to anchor atomically dispersed Pt atoms on carbon nanotubes(Pt-CNTs), which decelerates the diffusion rate of Pt Cl2-6 ion reached onto the carbon nanotubes and lowers the free energy of Pt atoms in the solution to reduce the probability of the Pt aggregation. The obtained Pt-CNTs exhibits a low overpotential of 41 mV@10 mA cm^(-2) for HER in acidic media. The calculation results revealed that the improvement of the electrocatalytic activity is contributed by the interaction between CNTs and Pt atoms, which descreases the the Pt d band cneter referred to the Fermi level and lowers the Gibbs free energy of H*adsorption. This work may provide one easy and convenient strategy for the large-scale use of Pt catalysts in practical applications.

关键词： Hydrogen evolution reaction Single-atom catalysts Ultralow-temperature Platinum Carbon nanotubes

Genetic Analysis of a Dwarf Vine and Small Fruit Watermelon Mutant

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Horticultural Plant Journal 2016年第4期2卷 224-228页

作者： LI Yuge xu aijiao DONG Wei LI Zhi LI Guoshen College of Science Biology Henan UniversityPlant Genetics Laboratory

The dwarf vine and small fruit watermelon, referred to as ‘dsh' in this study, is a natural mutant of the ordinary watermelon, ‘Hanxuan Lvyuan'.Morphological assessment indicated that its main vine length, internode length, and single-fruit weight were significantly lower than those of the ordinary watermelon(P 0.05), respectively. It was suggested that this dwarf and small fruit mutation was a single recessive gene trait that followed a Mendel's inheritance.

关键词： watermelon dwarf small fruit short vine mutant

磁控溅射WO_x-Ti(Mo,Ni,V)薄膜的电致变色性能

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材料导报 2007年第4期21卷 144-146,154页

作者：黄佳木徐爱娇蔡明重庆大学材料科学与工程学院重庆400045

采用反应磁控溅射工艺分别制备掺杂Ti、Mo、Ni、V的WOx薄膜,研究了掺杂对其电致变色性能的影响机理。实验结果表明,适量的掺杂可以提高薄膜的电致变色性能,Mo的掺杂可以调节光谱吸收范围,Ni、V的掺杂可以提高记忆存储能力,Ti的掺杂可以... 详细信息

采用反应磁控溅射工艺分别制备掺杂Ti、Mo、Ni、V的WOx薄膜,研究了掺杂对其电致变色性能的影响机理。实验结果表明,适量的掺杂可以提高薄膜的电致变色性能,Mo的掺杂可以调节光谱吸收范围,Ni、V的掺杂可以提高记忆存储能力,Ti的掺杂可以延长循环寿命;磁控溅射制备的掺杂WOx薄膜均为非晶态。

关键词： WOx 薄膜电致变色掺杂磁控溅射

腔内三维自由成像与二维超声对节育器异位诊断比较

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影像研究与医学应用 2019年第20期3卷 36-38页

作者：熊可江丹火徐爱娇景德镇市妇幼保健院超声科

目的:腔内三维自由成像技术与二维超声对节育器异位诊断比较。方法:对106例经取环术或宫腔镜手术明确节育器异位病例,术前均行二维超声及三维自由成像技术检查,对其检查结果进行比较。结果:106例节育器异位病例中,三维自由成像技术对节... 详细信息

目的:腔内三维自由成像技术与二维超声对节育器异位诊断比较。方法:对106例经取环术或宫腔镜手术明确节育器异位病例,术前均行二维超声及三维自由成像技术检查,对其检查结果进行比较。结果:106例节育器异位病例中,三维自由成像技术对节育器异位的诊断率为100%(106/106),二维超声诊断率为85%(90/106),两者差异有统计学意义(P<0.05);而在异位类型判断中,节育器下移及穿孔差异没有统计学意义,在节育器转位及嵌顿,差异有统计学意义(P<0.05)。结论:三维自由成像技术在节育器异位诊断方面明显优于二维超声,异位类型中,在节育器转位及嵌顿类型诊断优势明显,能为临床手术方式的选择及术中处理提供指导性意见。

关键词：三维自由成像二维超声节育器异位比较

Aquaporin-4-IgG-seropositive neuromyelitis optica spectrum disorders:progress of experimental models based on disease pathogenesis

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Neural Regeneration Research 2025年第2期20卷 354-365页

作者： Li xu Huiming xu Changyong Tang Department of Neurology The Third Affiliated Hospital of Sun Yat-sen UniversityGuangzhouGuangdong ProvinceChina

Neuromyelitis optica spectrum disorders are neuroinflammatory demyelinating disorders that lead to permanent visual loss and motor *** date,no effective treatment exists as the exact causative mechanism remains ***,experimental models of neuromyelitis optica spectrum disorders are essential for exploring its pathogenesis and in screening for therapeutic *** most patients with neuromyelitis optica spectrum disorders are seropositive for IgG autoantibodies against aquaporin-4,which is highly expressed on the membrane of astrocyte endfeet,most current experimental models are based on aquaporin-4-IgG that initially targets *** experimental models have successfully simulated many pathological features of neuromyelitis optica spectrum disorders,such as aquaporin-4 loss,astrocytopathy,granulocyte and macrophage infiltration,complement activation,demyelination,and neuronal loss;however,they do not fully capture the pathological process of human neuromyelitis optica spectrum *** this review,we summarize the currently known pathogenic mechanisms and the development of associated experimental models in vitro,ex vivo,and in vivo for neuromyelitis optica spectrum disorders,suggest potential pathogenic mechanisms for further investigation,and provide guidance on experimental model *** addition,this review summarizes the latest information on pathologies and therapies for neuromyelitis optica spectrum disorders based on experimental models of aquaporin-4-IgG-seropositive neuromyelitis optica spectrum disorders,offering further therapeutic targets and a theoretical basis for clinical trials.

关键词： aquaporin-4 experimental model neuromyelitis optica spectrum disorder pathogenesis

Rock fracture mechanism of buffer blasting with cushion layer at the borehole bottom

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 325-334页

作者： Xinguang Zhu Chenxi Ding Zhe Sui Hong Su xu Guo School of Civil and Resources Engineering University of Science and Technology BeijingBeijing 100083China Key Laboratory for Mechanics in Fluid Solid Coupling Systems Institute of MechanicsChinese Academy of SciencesBeijing 100190China School of Mechanics and Civil Engineering China University of Mining and Technology(Beijing)Beijing 100083China School of Chemical and Blasting Engineering Anhui University of Science and TechnologyHuainan 232001China

This study primarily investigates the rock fracture mechanism of bottom cushion layer blasting and explores the effects of the bottom cushion layer on rock *** involves analyses of the evolution patterns of blasting stress,characteristics of crack distribution,and rock fracture features in the ***,blasting model experiments were carried out using the dynamic caustics principle to investigate the influence of bottom cushion layers and initiation methods on the integrity of the bottom rock *** experimental results indicate that the combined use of bottom cushion layers and inverse initiation effectively protects the integrity of the bottom rock ***,the process of stress wave propagation and dynamic crack propagation in rocks was simulated using the continuum-discontinuum element method(CDEM)and the Landau explosion source model,with varying thicknesses of bottom cushion *** numerical simulation results indicate that with increasing cushion thickness,the absorption of energy generated by the explosion becomes more pronounced,resulting in fewer cracks in the bottom rock *** illustrates the positive role of the cushion layer in protecting the integrity of the bottom rock mass.

关键词： bottom cushion layer blasting crack propagation continuum-discontinuum element method dynamic stress intensity factor

Superhydrophobic and corrosion-resistant siloxane-modified MgAl-LDHs coatings on magnesium alloy prepared under mild conditions

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 450-463页

作者： Wenxi Zhang Zhangzelong Zhuo Dan xu Liang Wu Zhihui Xie Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province College of Chemistry and Chemical EngineeringChina West Normal UniversityNanchong 637002China College of Materials Science and Engineering/National Engineering Research Center for Magnesium Alloys Chongqing UniversityChongqing 400044China

We have developed a superhydrophobic and corrosion-resistant LDH-W/PFDTMS composite coating on the surface of Mg *** composite comprised a tungstate-intercalated(LDH-W)underlayer that was grown at low temperature(relative to hydrothermal reaction conditions)under atmospheric pressure and an outer polysiloxane layer created from a solution containing perfluorodecyltrimethoxysilane(PFDTMS)using a simple immersion *** successful intercalation of tungstate into the LDH phase and the following formation of the polysiloxane layer were confirmed through X-ray diffraction(XRD),Fourier transform infrared(FTIR)spectroscopy,and X-ray photoelectron spectroscopy(XPS).The corrosion resistance of the LDH-W film,both before and after the PFDTMS modification,was evaluated using electrochemical impedance spectroscopy(EIS),Tafel curves,and immersion *** results showed that Mg coated with LDH-W/PFDTMS exhibited significantly enhanced corrosion protection compared to the unmodified LDHW film,with no apparent signs of corrosion after exposure to 3.5wt%NaCl solution for 15 ***,the LDH-W/PFDTMS coating demonstrated superior superhydrophobicity and self-cleaning properties against water and several common beverages,as confirmed by static contact angle and water-repellency *** results offer valuable insights into preparing superhydrophobic and corrosion-resistant LDH-based composite coatings on Mg alloy surfaces under relatively mild reaction conditions.

关键词： Mg alloy corrosion coating layered double hydroxide

Reducing the measurement errors in nonadiabatic holonomic quantum computers

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 64-70页

作者： Guo-Fu xu Department of Physics Shandong University

Nonadiabatic holonomic quantum computers serve as the physical platform for nonadiabatic holonomic quantum *** quantum computation has entered the noisy intermediate-scale era, building accurate intermediate-scale nonadiabatic holonomic quantum computers is clearly necessary. Given that measurements are the sole means of extracting information, they play an indispensable role in nonadiabatic holonomic quantum computers. Accordingly, developing methods to reduce measurement errors in nonadiabatic holonomic quantum computers is of great importance. However, while much attention has been given to the research on nonadiabatic holonomic gates, the research on reducing measurement errors in nonadiabatic holonomic quantum computers is severely lacking. In this study, we propose a measurement error reduction method tailored for intermediate-scale nonadiabatic holonomic quantum computers. The reason we say this is because our method can not only reduce the measurement errors in the computer but also be useful in mitigating errors originating from nonadiabatic holonomic gates. Given these features,our method significantly advances the construction of accurate intermediate-scale nonadiabatic holonomic quantum computers.

关键词： quantum holonomy quantum computation measurement errors