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Construction of novel P-Si/TiO_(2)/HfO_(2)/MoS_(2)/Pt heterophotocathode for enhanced photoelectrochemical water splitting

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Nano Research 2024年第5期17卷 4428-4436页

作者： Jiaru Li Jiayu Bai Songjie Hu Wenyu Yuan Yuyu bu Xiaohui Guo Key Lab of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education Shaanxi Key Laboratory for Carbon Neutral TechnologyThe College of Chemistry and Materials ScienceNorthwest UniversityXi'an 710069China Key Lab of Wide Band-Gap Semiconductor Materials and Devices School of MicroelectronicsXidian UniversityXi’an 710071China Key Lab of Macromolecular Science of Shaanxi Province Key Laboratory of Applied Surface and Colloid ChemistryMinistry of EducationSchool of Chemistry&Chemical EngineeringShaanxi Normal UniversityXi'an 710062China

Photoelectrochemical devices have been developed to enable the conversion of solar ***,their commercial potential is restricted by the limited stability of the materials *** enhance the stability of photocathode and its solar water splitting performance,a P-Si/TiO_(2)/HfO_(2)/MoS_(2)/Pt composite photocathode is developed in this *** novel TiO_(2)/HfO_(2)/MoS_(2) serial nanostructure provides excellent stability of the photocathode,and optimizes the interface energy barrier to further facilitate the transfer process of photogenerated carriers within the *** best P-Si/TiO_(2)/HfO_(2)/MoS_(2)/Pt photocathode demonstrates an initial potential of 0.5 V(***)and a photocurrent density of-29 mA/cm^(2) at 0 V(***).Through intensity modulated photocurrent spectroscopy and photoluminescence test,it is known that the enhanced water splitting performance is attributed to the optimized carrier transfer *** findings provide a feasible strategy for the stability and photon quantum efficiency enhancement of silicon-based photocathode devices.

关键词： photoelectrochemical water splitting stability surface/interface engineering HfO_(2)layer

Effects of acid mine drainage on photochemical and biological degradation of dissolved organic matter in karst river water

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Journal of Environmental Sciences 2024年第1期135卷 26-38页

作者： Linwei Li Xingxing Cao Chujie bu Pan Wu Biao Tian Yongheng Dai Yeye Ren College of Resources and Environmental Engineering Guizhou UniversityGuiyang 550025China Key Laboratory of Karst Georesources and Environment Ministry of EducationGuizhou UniversityGuiyang 550025China Guizhou Karst Environmental Ecosystems Observation and Research Station Ministry of EducationGuizhou UniversityGuiyang 550025China

Dissolved organic matter(DOM)can be removed or transformed by photochemical and biological processes,producing the negative effect of transforming organic carbon into inorganic carbon,which plays a vital role in the karst carbon ***,acid mine drainage(AMD)will affect this process,so the degradation of DOM in karst river water(KRW)needs to be studied in this *** this study,to reveal the evolution processes of DOM under photochemical and biological conditions in AMD-impacted KRW,AMD and KRW were mixed in different ratios under conditions of visible light irradiation(VL),biodegradation(BD),ultraviolet irradiation(UV)and ultraviolet irradiation+biodegradation(UV+BD).The average DOC concentrations in samples after mixing AMD and KRW in different proportions decreased significantly(by 23%)in UV+BD,which was 1.2–1.4 times higher than under the other conditions and would lead to a significant release of inorganic *** analysis of the fluorescence parameters via parallel factor analysis(PARAFAC)revealed that the DOM fluorescence components in AMD comprised mainly protein-like substances derived from autochthonous components,while the DOM fluorescence components in KRW were mainly humic-like substances with both autochthonous and allochthonous ***,AMD could promote both the photochemical and biological degradation of DOM in karst receiving streams,resulting in the conversion of DOC to inorganic *** results showed that the synergistic effects of UV+BD and AMD accelerated the degradation of DOM and the release of inorganic carbon in KRW,thus affecting the stability of the karst carbon cycle.

关键词： Acid mine drainage Dissolved organic matter Karst river water Photochemical degradation Biological degradation

Dispersed Wind Power Planning Method Considering Network Loss Correction with Cold Weather

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Energy Engineering 2024年第4期121卷 1027-1048页

作者： Hanpeng Kou Tianlong bu Leer Mao Yihong Jiao Chunming Liu Hulunbeier Power Supply Company State Grid Inner Mongolia East Power Co.Ltd.Hulunbeier021100China College of Electrical and Electronic Engineering North China Electric Power UniversityBeijing102206China

In order to play a positive role of decentralised wind power on-grid for voltage stability improvement and loss reduction of distribution network,a multi-objective two-stage decentralised wind power planning method is proposed in the paper,which takes into account the network loss correction for the extreme cold ***,an electro-thermal model is introduced to reflect the effect of temperature on conductor resistance and to correct the results of active network loss calculation;secondly,a two-stage multi-objective two-stage decentralised wind power siting and capacity allocation and reactive voltage optimisation control model is constructed to take account of the network loss correction,and the multi-objective multi-planning model is established in the first stage to consider the whole-life cycle investment cost of WTGs,the system operating cost and the voltage quality of power supply,and the multi-objective planning model is established in the second *** model,and the second stage further develops the reactive voltage control strategy of WTGs on this basis,and obtains the distribution network loss reduction method based on WTG siting and capacity allocation and reactive power control ***,the optimal configuration scheme is solved by the manta ray foraging optimisation(MRFO)algorithm,and the loss of each branch line and bus loss of the distribution network before and after the adoption of this loss reduction method is calculated by taking the IEEE33 distribution system as an example,which verifies the practicability and validity of the proposed method,and provides a reference introduction for decision-making for the distributed energy planning of the distribution network.

关键词： Decentralised wind power network loss correction siting and capacity determination reactive voltage control two-stage model manta ray foraging optimisation algorithm

Track Defects Recognition Based on Axle-Box Vibration Acceleration and Deep- Learning Techniques

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Structural Durability & Health Monitoring 2024年第5期18卷 623-640页

作者： Xianxian Yin Shimin Yin Yiming bu Xiukun Wei School of Transportation Engineering Shandong Jianzhu UniversityJinan250101China China Construction Eighth bureau(Shandong)Design Consulting Co. Ltd.Jinan250100China State Key Laboratory of Rail Traffic Control and Safety Beijing Jiaotong UniversityBeijing100044China

As an important component of load transfer,various fatigue damages occur in the track as the rail service life and train trafﬁc increase gradually,such as rail corrugation,rail joint damage,uneven thermite welds,rail squats fas-tener defects,***-time recognition of track defects plays a vital role in ensuring the safe and stable operation of rail *** this paper,an intelligent and innovative method is proposed to detect the track defects by using axle-box vibration acceleration and deep learning network,and the coexistence of the above-mentioned typical track defects in the track system is ***,the dynamic relationship between the track defects(using the example of the fastening defects)and the axle-box vibration acceleration(ABVA)is investigated using the dynamic vehicle-track ***,a simulation model for the coupled dynamics of the vehicle and track with different track defects is established,and the wavelet power spectrum(WPS)analysis is performed for the vibra-tion acceleration signals of the axle box to extract the characteristic ***,using wavelet spectrum photos as input,an automatic detection technique based on the deep convolution neural network(DCNN)is sug-gested to realize the real-time intelligent detection and identiﬁcation of various track ***ﬁndings demonstrate that the suggested approach achieves a 96.72%classiﬁcation accuracy.

关键词： Track defects intelligent detection deep convolution neural network acceleration of axle-box vibration

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多核信息融合模型及其应用

仪器仪表学报 2010年第2期31卷 248-252页

作者：杨勃卜英勇黄剑飞中南大学机械电子工程学院长沙410083 湖南理工学院岳阳414000

针对单核学习方法不能充分获取对象非线性特征的问题,提出一种核采样空间中的多核融合模型。与工作于隐式核空间的常见多核融合模型不同,该融合模型本质上是一种矩阵融合模型,其融合参数不受融合核矩阵半正定性要求的约束。在该模型基础... 详细信息

针对单核学习方法不能充分获取对象非线性特征的问题,提出一种核采样空间中的多核融合模型。与工作于隐式核空间的常见多核融合模型不同,该融合模型本质上是一种矩阵融合模型,其融合参数不受融合核矩阵半正定性要求的约束。在该模型基础上,进一步提出一种多核正则化Ho-Kashyap分类器,并设计了相应的迭代优化算法。最后,将该多核融合算法应用到水下钴结壳超声识别领域。实验结果表明,与单核学习方法相比,采用核采样空间多核信息融合模型的钴结壳超声识别分类正确率提高了7%,说明了该融合模型的有效性。

关键词：多核学习多核信息融合 Ho-Kashyap分类器水下钴结壳识别

The acyclic chromatic index of planar graphs without 4-,6-cycles and intersecting triangles

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Frontiers of Mathematics in China 2024年第3期19卷 117-136页

作者： Yuehua bu Qi JIA Hongguo ZHU College of Mathematics and Computer Science Zhejiang Normal UniversityJinhua 321004China Xingzhi College Zhejiang Normal UniversityJinhua 321004China

A proper edge k-coloring is a mappingΦ:E(G)-→{1,2,...,k}such that any two adjacent edges receive different colors.A proper edge k-coloringΦof G is called acyclic if there are no bichromatic cycles in *** acyclic chromatic index of G,denoted by Xa(G),is the smallest integer k such that G is acyclically edge *** this paper,we show that if G is a plane graph without 4-,6-cycles and intersecting 3-cycles,△(G)≥9,then Xa(G)≤△(G)+1.

关键词： Acyclic edge coloring plane graph cycle

The Wnt-dependent and Wnt-independent functions of BCL9 in development,tumorigenesis,and immunity:Implications in therapeutic opportunities

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Genes & Diseases 2024年第2期11卷 701-710页

作者： Minjie Wu Heng Dong Chao Xu Mengqing Sun Haojin Gao Fangtian bu Jianxiang Chen College of Pharmacy and Department of Hepatology Institute of Hepatology and Metabolic DiseasesThe Affiliated Hospital of Hangzhou Normal UniversityHangzhou Normal UniversityHangzhouZhejiang 311121China Laboratory of Cancer Genomics Division of Cellular and Molecular ResearchNational Cancer CentreSingapore 169610Singapore Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines Engineering Laboratory of Development and Application of Traditional Chinese MedicinesCollaborative Innovation Center of Traditional Chinese Medicines of Zhejiang ProvinceHangzhou Normal UniversityHangzhouZhejiang 311121China

B-cell CLL/lymphoma 9(BCL9)is considered a key developmental regulator and a well-established oncogenic driver in multiple cancer types,mainly through potentiating the Wnt/β-catenin ***,increasing evidences indicate that BCL9 also plays multiple Wnt-independent ***,we summarized the updates of the canonical and non-canonical functions of BCL9 in cellular,physiological,or pathological ***,we also concluded that the targeted inhibitors disrupt the interaction ofβ-catenin with BCL9 reported recently.

关键词： BCL9 Development Immunity Multifaceted functions Therapeutic target Tumorigenesis

The burden of Hypertension-Related Chronic Kidney Disease—China,2010–2019

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China CDC weekly 2024年第14期6卷 282-288页

作者： Youyuan bu Yueru Liu Maigeng Zhou Peng Yin Kejun Liu Yamin Bai Xuancheng Lu Chinese Center for Disease Control and Prevention BeijingChina National Center for Chronic and Non-Communicable Disease Control and Prevention Chinese Center For Disease Control and PreventionBeijingChina China National Health Development Research Center BeijingChina

What is already known about this topic?The global burden of chronic kidney disease(CKD)is on the *** is added by this report?In 2019,5.58 million individuals in China were affected by CKD related to hypertension,leading to 70,260 fatalities and 1.69 million disability-adjusted life years(DALYs).The most affected groups were men,older individuals,and residents of western *** the period from 2010–2019,the age-standardized prevalence rate(ASPR)remained constant,and the agestandardized mortality rate(ASMR)and agestandardized DALY rate(ASDR)showed a decreasing ***,there was an increase in the number of cases,deaths,and DALYs associated with this *** are the implications for public health practice?Hypertension significantly contributes to the burden of CKD;therefore,raising awareness and implementing early screening measures are essential.

关键词： Kidney mortality burden

Cobalt-based heterogeneous catalysts for photocatalytic carbon dioxide reduction

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Tungsten 2024年第2期6卷 410-421页

作者： Hong Yuan Jian-Hua Mei Yun-Nan Gong Di-Chang Zhong Tong-bu Lu MOE International Joint Laboratory of Materials Microstructure Institute for New Energy Materials and Low Carbon TechnologiesSchool of Materials Science and EngineeringTianjin University of TechnologyTianjin 300384China

Solar light-driven CO_(2)reduction to high value-added chemicals has considered as an outstanding way to solve energy crisis and climate ***,various photocatalysts have been developed to achieve this *** them,cobaltbased heterogeneous catalysts have attracted great interest because of their promising performance,product selectivity and ***,we systematically summarize the research progress of various cobalt-based heterogeneous catalysts for the photoreduction of CO_(2),such as single-atom cobalt,and cobalt-based oxides,nitrides,sulfi des,phosphides,metal-organic frameworks and covalent-organic ***,the advantages and structure-activity relationship of these catalysts in photocatalytic CO_(2)reduction reaction are ***,the challenges and prospects for constructing cobaltbased heterogeneous catalysts with high effi ciency are highlighted.

关键词： Cobalt Heterogeneous catalysts CO_(2)reduction Photocatalysis