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Journal of Energy Chemistry 2024年第5期92卷 233-239页

作者： Chongchong Liu Peifang Wang Bin hu xiaoli Liu Rong huang Gang Zhou Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education College of EnvironmentHohai UniversityNanjing 210098JiangsuChina

Urea oxidation reaction(UOR)is proposed as an exemplary half-reaction in renewable energy applications because of its low thermodynamical potential.However,challenges persist due to sluggish reaction kinetics and complex by-products separation.To this end,we introduce the lattice oxygen oxidation mechanism(LOM),propelling a novel UOR route using a modified CoFe layered double hydroxide(LDH)catalyst termed CFRO-7.Theoretical calculations and in-situ characterizations highlight the activated lattice oxygen(O_(L))within CFRO-7 as pivotal sites for UOR,optimizing the reaction pathway and accelerating the kinetics.For the urea overall electrolysis application,the LOM route only requires a low voltage of 1.54 V to offer a high current of 100 mA cm^(-2) for long-term utilization(>48 h).Importantly,the by-product NCO^(-)−is significantly suppressed,while the CO_(2)2/N_(2) separation is efficiently achieved.This work proposed a pioneering paradigm,invoking the LOM pathway in urea electrolysis to expedite reaction dynamics and enhance product selectivity.

关键词： Lattice oxygen Urea oxidation reaction Overall electrolysis Products selectivity

Two-Dimensional Conductive Metal-Organic Framework Reinforced Spinterface in Organic Spin Valves

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CCS Chemistry 2024年第1期6卷 208-217页

作者： Xiaoyu Song Chao Jin Hongliang Chen Shuaishuai Ding Zhongyi Liu Yang Li xiaoli Yan Wenbo Mi Long Chen Wenping hu Department of Chemistry Tianjin Key Laboratory of Molecular Optoelectronic ScienceTianjin UniversityTianjin 300072 School of Chemistry and Chemical Engineering Yantai UniverisityYantaiShandong 264005 Tianjin Key Laboratory of Low Dimensional Materials Physics and Processing Technology School of ScienceTianjin UniversityTianjin 300072 State Key Laboratory of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchunJilin 130012

Interface engineering in device fabrication is a significant but complicated issue.Although great successes have been achieved by conventional physical in situ or ex situ methods,it still suffers from complicated procedures.In this work,we present a facile method for fabricating phthalocyanine(Pc)-based two-dimensional conductive metal–organic framework(MOF)films.Based on PcM-Cu(M=Ni,Cu,H_(2))MOF films,spin valves with a vertical configuration of La_(0.67)Sr_(0.33)MnO_(3)/PcM-Cu MOFs/Co were constructed successfully,and exhibited notably high negative magnetoresistance(MR)up to -22% at 50 K.The penetrated Co atoms coordinated with the dehydrogenated hydroxy groups in the MOFs resulting in an antiferromagnetic layer of the PcM-Cu-Co hybrid structure.Interestingly,a significant exchange bias effect was demonstrated at the PcM-Cu MOF/Co interface,beneficial for the MR behavior.Thus,our present study provides new insights into developing high-performance organic spin valves via de novo molecular design.

关键词： two-dimensional conductive metal-organic framework two-dimensional polymer phthalocyanine spintronics organic spin valve

多度对寄生型网络嵌套结构的影响大于食草型网络

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Journal of Plant Ecology 2022年第6期15卷 1133-1141页

作者： Bin Lan xiaoli hu Ying Wang Shucun Sun Department of Ecology School of Life ScienceNanjing UniversityNanjing 210023China

因为物种多度显著影响种间互作频率,分析食物网结构对物种多样性和稳定性影响时,应基于能够反映物种真实偏好的网络(即偏好网),而不是直接观察得到的网络(即观察网)。食草网络中(植物为低营养级)的植物资源多度大于寄生网络中(动物为低... 详细信息

因为物种多度显著影响种间互作频率,分析食物网结构对物种多样性和稳定性影响时,应基于能够反映物种真实偏好的网络(即偏好网),而不是直接观察得到的网络(即观察网)。食草网络中(植物为低营养级)的植物资源多度大于寄生网络中(动物为低营养级)寄主资源多度,因此我们假设:寄生网络的结构比食草网络的结构更易受到多度效应的影响。为验证这一假设,我们从已发表的文献中收集了80个定量观察网络(包括34个植物-食草昆虫网络和46个寄生网络),应用有效多度模型去除物种多度对观察网络的影响,从而得出偏好网络。然后,我们应用weighted NODF和spectral radius两个嵌套系数表征网络嵌套性,分析了观察网和偏好网的物种链接数分布、相互作用均匀度、加权连通度和稳健性的差异。结果表明,在偏好网中,寄生网络的嵌套程度要低于食草网络,这可能是因为去除多度影响增加了种间作用频率的均匀度。偏好网的加权连通度和稳健性显著高于相应的观察网,表明偏好网比观察网具有更高的网络稳定性。未来的食物网研究不仅应关注互惠和拮抗网络的结构差异,还应该关注食草和寄生等不同类型拮抗食物网的结构差异。

关键词：网络嵌套性食草网络寄生网络偏好网物种多度效应

针刺联合重复经颅磁刺激治疗轻中度卒中后抑郁：随机对照试验

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中国针灸 2024年第7期44卷 765-769页

作者：胡晓丽李佳慧辽宁中医药大学附属医院脑病康复科辽宁中医药大学第一临床学院

目的：探讨针刺联合重复经颅磁刺激（r TMS）治疗轻中度卒中后抑郁的临床疗效。方法：将90例轻中度卒中后抑郁患者随机分为联合组（30例，脱落4例）、针刺组（30例，脱落3例）、r TMS组（30例，脱落5例）。3组患者均接受基础治疗，联合... 详细信息

目的：探讨针刺联合重复经颅磁刺激（r TMS）治疗轻中度卒中后抑郁的临床疗效。方法：将90例轻中度卒中后抑郁患者随机分为联合组（30例，脱落4例）、针刺组（30例，脱落3例）、r TMS组（30例，脱落5例）。3组患者均接受基础治疗，联合组予针刺（穴取百会、印堂、膻中及双侧神门、太冲、内关）联合r TMS治疗，针刺组予针刺治疗，rTMS组予r TMS治疗。均每日1次，每周5次，共治疗4周。比较各组患者治疗前后汉密尔顿抑郁量表（HAMD-17）评分、匹兹堡睡眠质量指数（PSQI）评分及事件相关电位。结果：治疗后，3组患者HAMD-17、PSQI评分均较治疗前降低（P<0.01），联合组低于针刺组和r TMS组（P<0.05）。治疗后，3组患者事件相关电位[（视觉P300、失匹配负波（MMN）]的潜伏期较治疗前缩短（P<0.05），且联合组短于针刺组和r TMS组（P<0.05）。结论：针刺联合重复经颅磁刺激能够有效缓解轻中度卒中后抑郁患者的抑郁情绪，提高患者的睡眠质量，改善事件相关电位P300、MMN的潜伏期。

关键词：卒中后抑郁针刺重复经颅磁刺激汉密尔顿抑郁量表随机对照试验

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大棚用蔬菜移苗栽种一体机设计

机械设计 2024年第5期41卷 70-75页

作者：侯晓莉胡胜西安理工大学机械与精密仪器工程学院陕西西安710048 东南大学机械工程学院江苏南京211189

蔬菜钵苗自动化移栽技术可以解放生产力,提高效率,进而获得更大的经济收益。为适应我国新疆区域大棚蔬菜种植的情况,文中提出了一种钵苗移栽装置原型机方案。整机采用X-Y横纵向移动机构实现带动仿手指形夹板有效运动从而完成夹取苗过程... 详细信息

蔬菜钵苗自动化移栽技术可以解放生产力,提高效率,进而获得更大的经济收益。为适应我国新疆区域大棚蔬菜种植的情况,文中提出了一种钵苗移栽装置原型机方案。整机采用X-Y横纵向移动机构实现带动仿手指形夹板有效运动从而完成夹取苗过程,并采用杠杆原理设计双鸭嘴式定点竖直打孔下苗结构。该装置实现了取苗、打孔和栽苗的一体化操作,集成度较高。

关键词：蔬菜机械化移栽装置取苗机构打孔下苗机构运动仿真

Histopathological Features Predicting Long-term Clinical Outcomes in Patients with Vanishing Bile Duct Syndrome

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Journal of Clinical and Translational Hepatology 2023年第5期11卷 1161-1169页

作者： Tingting Lv Haitian Yu Xiao Han Aileen Wee Jimin Liu Min Li Jinghang Xu xiaoli hu Jia Li Weijia Duan Tailing Wang Jidong Jia Xinyan Zhao Liver Research Center Beijing Friendship HospitalCapital Medical UniversityNational Clinical Research Center for Digestive DiseasesBeijingChina Department of Pathology Yong Loo Lin School of MedicineNational University of SingaporeNational University HospitalSingapore Department of Pathology and Molecular Medicine Faculty of Health SciencesMcMaster UniversityHamiltonOntarioCanada Clinical Epidemiology and Evidence-Based Medicine Unit National Clinical Research Center for Digestive DiseasesBeijing Friendship HospitalCapital Medical UniversityBeijingChina Department of infectious disease Peking University First HospitalBeijingChina Department of infectious disease Heilongjiang Province HospitalHeilongjiangChina Department of Hepatology Tianjin Second People’s HospitalTianjinChina Department of Pathology China-Japan Friendship HospitalBeijingChina

Background and Aims:The clinicopathological features and long-term outcomes of patients with vanishing bile duct syndrome(VBDS)have yet to be elucidated.The study aims to investigate these features and identify factors associated with poor prognosis.Methods:This multicenter retrospective study recruited patients with liver biopsy-proven VBDS who were followed up at five hospitals in northern China from January 2003 to April 2022.Clinical and pathological data at time of biopsy were reviewed.Clinical outcomes including cirrhosis,decompensation events,liver transplantation(LT),and liver-related death were recorded.Cox regression analysis was used to identify the risk factors associated with poor outcomes.Results:A total of 183 patients were included.The median age was 47 years,with 77.6%being women.During a median follow-up of 4.8 years,88 patients developed compensated or decompensated cirrhosis,27 died,and 15 received LT.Multivariate Cox regression analysis showed that hepatocellular cholestasis(HR 2.953,95%CI:1.437–6.069),foam cells(HR 2.349,95%CI:1.092–5.053),and advanced fibrosis(HR 2.524,95%CI:1.313–4.851)were independent predictors of LT or liver-related deaths.A nomogram formulated with the above factors showed good consistency with a concordance index of 0.746(95%CI:0.706–0.785).Conclusions:Nearly half of VBDS patients studied progressed to end-stage liver disease and 23%of them had LT or liver-related death within two years of diagnosis.Hepatocellular cholestasis,foam cells and advanced fibrosis rather than the degree of bile duct loss or underlying etiologies were independently associated with poor prognosis in VBDS patients.

关键词： Bile duct loss Prognosis Cholestasis Foam cells Advanced fibrosis

Spectrofluorimetric analysis of captopril based on its obstruction effect of the nanomaterial surface energy transfer between acridine orange and gold nanoparticles

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Science China Chemistry 2015年第5期58卷 885-891页

作者： Jingfang Guo Yamei Yang xiaoli hu Yuanfang Li Key Laboratory of Luminescent and Real-Time Analytical Chemistry Ministry of Education College of Chemistry and Chemical Engineering Southwest University

A simple and sensitive method for detection of captopril was established based on its obstructive effect on nanomaterial surface energy transfer(NSET). It was found that the acridine orange(AO) could be adsorbed onto the surface of citrated-gold nanoparticles(Au NPs) through electrostatic interaction. Incidentally, the fluorescence of AO was quenched owing to the dipole-dipole interaction of NSET between AO fluorophore and the Au NPs. However, captopril could obstruct the occurrence of NSET between AO and Au NPs effectively with the formation of Au-S covalent bonds between it and the Au NPs. Consequently, AO molecules were moved away from the surface of Au NPs leading to a decline of the energy transfer efficiency. Moreover, the fluorescence of AO could be gradually restored with the addition of captopril. Under the optimal conditions, the recovered fluorescence intensity correlated linearly with the concentration of captopril in the range of 400 nmol/L–2.0 μmol/L with a detection limit of 71 nmol/L. Besides, the proposed method was successfully applied for the detection of captopril in troches with the recovery of 93%–102% and the RSD lower than 2.24%. The results were in good agreement with those obtained from the HPLC method.

关键词：金纳米颗粒卡托普利材料表面阻塞效应荧光法吖啶橙能量转移金纳米粒子

Remanufacturing Scheme Design for Used Parts Based on Incomplete Information Reconstruction

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Chinese Journal of Mechanical Engineering 2020年第3期33卷 72-85页

作者： Wenhao huang Zhigang Jiang Teng Wang Yan Wang xiaoli hu hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering Wuhan University of Science&TechnologyWuhan 430081China Key Laboratory of Metallurgical Equipment and Control Technology Wuhan University of Science&TechnologyWuhan 430081China Department of Computing Engineering and MathematicsUniversity of BrightonBrighton BN24GJUK School of Mechanical Engineering Shanghai Dianji UniversityShanghai 201306China.

The different conditions of use of a component result in a variety of damage levels.Therefore,excluding differences in shape and size,used parts show a high degree of uncertainty regarding failure characteristics,quality conditions,and remaining life,which seriously affects the efficiency of a remanufacturing scheme design.Aiming to address this problem,a remanufacturing scheme design method based on the reconstruction of incomplete information of used parts is proposed.First,the remaining life of the reconstructed model is predicted by finite element analysis,and the demand for the next life cycle is determined.Second,the scanned 3D damage point cloud data are registered with the original point cloud data using the integral iterative method to construct a missing point cloud model to achieve the restoration of geometric information.Then,according to reverse engineering and laser cladding remanufacturing,the tool remanufacturing process path can be generated by the tool contact point path section line method.Finally,the proposed method is adopted for turbine blades to evaluate the effectiveness and feasibility of the proposed scheme.This study proposes a remanufacturing scheme design method based on the incomplete reconstruction of used part information to solve the uncertain and highly personalized problems in remanufacturing.

关键词： Remanufacturing Incomplete information Unit-step integration iteration method

Absorption,fluorescence and resonance Rayleigh scattering spectra of hydrophobic hydrogen bonding of eosin Y/Triton X-100 nanoparticles and their analytical applications

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Science China Chemistry 2010年第11期53卷 2363-2372页

作者： Ling Kong ZhongFang Liu xiaoli hu ShaoPu Liu Southwest Univ Sch Chem & Chem Engn Minist Educ Key Lab Luminescence & Real Time Anal Chongqing 400715 Peoples R China

In a weak acidic medium(pH 2.4-2.8),eosin Y molecules(H2L) could replace water molecules to associate with Triton X-100 to form hydrophobic hydrogen bonding complexes.These complexes could further aggregate to form nanoparticles through the squeezing action of the water phase and Van Der Waals force,resulting in changes in the absorption spectrum and fluorescence quenching of EY as well as the significant enhancement of resonance Rayleigh scattering.This enables the sensitive determination of Triton X-100 using the fading spectrophotometry,fluorescence quenching method and RRS method.Among them,the RRS method shows the highest sensitivity with a detection limit of 20.6 ng mL-1 for Triton X-100.The optimum experimental conditions and factors that affect the absorption,fluorescence and RRS spectra were tested.The effects of coexisting substances were investigated and the results showed good selectivity.Based on these results,new spectrophotometric methods,fluorescence quenching method and RRS method for the determination of Triton X-100,were established.The hydrogen bonding association of eosin Y with Triton X-100 and the formation of nanoparticles as well as their effects on related spectral characteristics were discussed utilizing infrared,transmission electron microscope technique and quantum chemical method.

关键词： eosin Y Triton X-100 resonance Rayleigh scattering fluorescence quenching absorption spectrum

Impact of land use change on water resource allocation in the middle reaches of the Heihe River Basin in northwestern China

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Journal of Arid Land 2014年第3期6卷 273-286页

作者： YanYun NIAN Xin LI Jian ZHOU xiaoli hu Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences College of Earth and Environmental Sciences Lanzhou University

In recent decades, China has been experiencing rapid economic development, population growth and urbanization. These processes have stressed the shortages of water resources in China, especially in the arid re- gions of northwestern China. In order to sustain the expanding cropland, people increased groundwater exploitation in these regions. The purpose of this study was to quantitatively analyze the changes in land use and water resources, and their relationship in the middle reaches of the Heihe River Basin, a typical inland river basin in northwest China. The data of land use change were interpreted using aerial photographs （1965） and Landsat TM images （1986 and 2007）. The data of irrigation water volume in the irrigation districts were spatialized in the middle reaches of the Heihe River Basin. The spatial variation of the groundwater depth was interpolated using the geo- statistical method. The results showed that the cultivated cropland area along oasis fringe increased by 15.38% and 43.60% during the periods 1965-1986 and 1986-2007, respectively. Surface water amount for irrigation had almost doubled from 1956 to 2010. The decrease of grassland area mainly occurred at the alluvial fan in front of the Qilian Mountains, with 36.47% during 1965-1986 and 38.56% during 1986-2007, respectively. The groundwater depth in front of the mountain constantly increased from 1986 to 2007. We found that the overuse of surface water and overexploitation of groundwater had direct consequences on the natural environments. We suggests that the efficiency of surface water resources use among different irrigation distdcts needs to be improved, which will significantly ease the conflicts between increasing water demand for irrigation and a shortage of water resources in the middle reaches of the Heihe River Basin.

关键词： watershed management land use groundwater irrigation arid region Heihe River Basin