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A substructure-aware graph neural network incorporating relation features for drug-drug interaction prediction

Quantitative Biology 2024年第3期12卷 255-270页

作者： liangcheng dong Baoming Feng Zengqian Deng Jinlong Wang Peihao Ni Yuanyuan Zhang School of Information and Control Engineering Qingdao University of TechnologyQingdaoChina

Identifying drug–drug interactions(DDIs)is an important aspect of drug design research,and predicting DDIs serves as a crucial guarantee for avoiding potential adverse *** substructure-based prediction methods still have some limitations:(i)The process of substructure extraction does not fully exploit the graph structure information of drugs,as it only evaluates the importance of different radius substructures from a single perspective.(ii)The process of constructing drug representations has overlooked the significant impact of relation embedding on optimizing drug *** this work,we propose a substructure-aware graph neural network incorporating relation features(RFSA-DDI)for DDI prediction,which introduces a directed message passing neural network with substructure attention mechanism based on graph self-adaptive pooling(GSP-DMPNN)and a substructure-aware interaction module incorporating relation features(RSAM).GSP-DMPNN utilizes graph self-adaptive pooling to comprehensively consider node features and local drug information for adaptive extraction of *** interacts drug features with relation representations to enhance their respective features individually,highlighting substructures that significantly impact ***-DDI is evaluated on two real-world *** to existing methods,RFSA-DDI demonstrates certain advantages in both transductive and inductive settings,effectively handling the task of predicting DDIs for unseen drugs and exhibiting good generalization *** experimental results show that RFSA-DDI can effectively capture valuable structural information of drugs more accurately for DDI prediction,and provide more reliable assistance for potential DDIs detection in drug development and treatment stages.

关键词： drug-drug interaction relation features self-adaptive pooling

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施工期铁路隧道软岩大变形快速分级方法研究

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铁道工程学报 2024年第2期41卷 20-25页

作者：张广泽贾哲强罗良成王栋任利袁传保中铁二院工程集团有限责任公司成都610031 四川大学深地科学与工程教育部重点实验室成都610065

研究目的:西南复杂艰险山区等典型构造活跃区的构造地质环境复杂,断裂、褶皱发育,构造应力显著,铁路隧道围岩大变形问题突出,随着构造活跃区铁路隧道工程日益增加,将面临更严峻的大变形问题。在隧道施工开挖过程中,快速判别可能发生的... 详细信息

研究目的:西南复杂艰险山区等典型构造活跃区的构造地质环境复杂,断裂、褶皱发育,构造应力显著,铁路隧道围岩大变形问题突出,随着构造活跃区铁路隧道工程日益增加,将面临更严峻的大变形问题。在隧道施工开挖过程中,快速判别可能发生的大变形等级,有利于施工工法的调整和支护措施的制定。研究结论:(1)深入分析构造软岩大变形工程案例,以施工期掌子面开挖揭示围岩分级数据为基准,结合区域地应力、岩层厚度、岩性等大变形关键控制因素,快速判定大变形等级,提出了施工期铁路隧道围岩大变形快速分级方法,并结合典型工程案例对分级方法的有效性和准确性进行了验证;(2)本研究成果可应用于施工期间铁路隧道开挖围岩大变形的快速分级,适用于工程地质勘察领域。

关键词：构造活跃区铁路隧道软岩大变形快速分级

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A novel pathogen Fusarium cuneirostrum causing common bean(Phaseolus vulgaris)root rot in China

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Journal of Integrative Agriculture 2024年第1期23卷 166-176页

作者： dong Deng Wenqi Wu Canxing Duan Suli Sun Zhendong Zhu Institute of Crop Sciences Chinese Academy of Agricultural SciencesBeijing 100081China

Several fungal pathogens cause root rot of common bean,among which Fusarium *** the most common pathogens causing Fusarium root rot(FRR)*** has been becoming an increasingly severe disease of common bean in China,but the species of Fusarium *** remained ***,this study was performed to identify the pathogen causing common bean root rot in liangcheng County,Inner Mongolia,*** Fusarium-like isolates were obtained after pathogen isolation and *** pathogenicity test indicated that eight isolates caused severe disease symptoms on common bean,while 11 other isolates were not *** eight pathogenic isolates,FCL1–FCL8,were identified as Fusarium cuneirostrum by morphological characterization and phylogenetic analysis using partial sequences of EF-1α,ITS,28S,and IGS *** range test showed that the representative *** isolate FCL3 was also pathogenic to mung bean,while not pathogenic to adzuki bean,chickpea,cowpea,faba bean,pea,and ***,50 common bean and 50 mung bean cultivars were screened for resistance to FRR,and seven highly resistant or resistant cultivars of common bean were identified,while no resistant cultivars of mung bean were *** study revealed that *** was one of common bean FRR pathogens in Inner Mongolia and it could induce mung bean root rot as *** our knowledge,this is the first report of *** causing FRR of common bean in China.

关键词： Fusarium cuneirostrum fusarium root rot pathogenicity molecular phylogenetic analysis Phaseolus vulgaris

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污水泵内颗粒通过性能及流动损失特性研究

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流体机械 2024年第4期52卷 28-35页

作者：刘梁成倪子建刘栋范佳宁尤保健江苏大学能源与动力工程学院江苏镇江212013 上海凯泉泵业(集团)有限公司上海201804

为了研究柱状颗粒参数对污水泵内固液两相流动特性以及通过性能的影响规律,采用CFD-DEM耦合方法计算了离心泵内固液两相流动,基于熵产理论分析了不同颗粒物性条件下泵内的流动损失特性,并通过试验对其进行了验证。结果表明:柱状颗粒长... 详细信息

为了研究柱状颗粒参数对污水泵内固液两相流动特性以及通过性能的影响规律,采用CFD-DEM耦合方法计算了离心泵内固液两相流动,基于熵产理论分析了不同颗粒物性条件下泵内的流动损失特性,并通过试验对其进行了验证。结果表明:柱状颗粒长径比、体积分数和密度影响了污水泵内颗粒的通过性能以及流动损失;固相浓度从1%增大至5%,泵的扬程降低1.97 m,效率降低2.2%,颗粒通过能力逐渐降低;颗粒密度从1000 kg/m^(3)增大至2500 kg/m^(3),泵的扬程降低1.63 m,效率降低3.76%,颗粒通过能力略有增强;在各工况下,总熵产变化规律与泵性能变化规律一致,高熵产区域主要集中在叶片进口边附近,说明熵产分析能够有效反映泵内的流动损失特性。研究结果可为污水泵的优化设计提供理论依据。

关键词：污水泵柱状颗粒 CFD-DEM 通过性能熵产

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The selection of a primary marker for the Anthropocene

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Science Bulletin 2019年第22期64卷 1643-1645页

作者： Tianli Wang liangcheng Tan Hai Xu Jingjie Zang dong Li Jianghu Lan Yongming Han Li Li State Key Laboratory of Loess and Quaternary Geology Institute of Earth EnvironmentChinese Academy of SciencesXi'an 710061China University of Chinese Academy of Sciences Beijing 100049China Center for Excellence in Quaternary Science and Global Change Chinese Academy of SciencesXi'an 710061China Institute of Global Environment Change Xi'an Jiaotong UniversityXi'an 710049China Open Studio for Oceanic-Continental Climate and Environment Changes Qingdao Pilot National Laboratory for Marine Science and TechnologyQingdao 266061China institute of Surface-Earth System Science Tianjin UniversityTianjin 300072China

Since Homo sapiens appeared,the planet has experienced continuing environmental changes[1,2].In 2000,Crutzen and Stoermer[3]systematically analysed the global changes caused by human activity over the previous 300 years and suggested that the Holocene epoch ended in the 1750s and a new geological age,the Anthropocene,***,the Anthropocene drew a lot of attention from both scientific community and the general *** recognition and placement of the Anthropocene/Holocene boundary has been a subject of heated debates over the past two *** the 35th International Geological Congress(2016;IGC),the Anthropocene Working Group(AWG)recommended the Anthropocene to be formalised with an epoch rank,with the 1950s as its lower boundary[4].

关键词： Holocene epoch boundary

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Preliminary Studies of Speleothem in Central Asia

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Acta Geologica Sinica(English Edition) 2016年第6期90卷 2279-2280页

作者： TAN liangcheng SONG Yougui CAI Yanjun AN Zhisheng Rustam OROZBAEV Yunus MAMADJANOV Lawrence R.EDWARDS CHENG Hai LI dong LI Yue State Key Laboratory of Loess and Quaternary Geology Institute of Earth EnvironmentChinese Academy of Sciences Institute of Global Environmental Change Xi’an Jiaotong University Research Center for Ecology and Environment of Central Asia (Bishkek) Chinese Academy of Sciences Institute of Geology National Academy of Sciences of Kyrgyz Republic Institute of Geology Earthquake Engineering and SeismologyAcademy of Sciences of the Republic of Tajikistan Department of Earth Sciences University of Minnesota

The Westerlies is important in linking the Northem high latitude, North Atlantic and East Asian monsoon. The location and intensity of the Westerly jet can not only control the climate of central Asia （including northwest arid China）, but also significantly influence the climate of the East Asian monsoon region. However, it remains unclear of the variability of the Westerlies in Asia on multiple timeseales and their global linkage.

关键词： Preliminary Studies of Speleothem in Central Asia

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Application of Avaatech X-ray fluorescence core-scanning in Sr/Ca analysis of speleothems

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Science China Earth Sciences 2019年第6期62卷 964-973页

作者： dong LI liangcheng TAN Fei GUO Yanjun CAI Youbin SUN Gang XUE Xing CHENG Hong YAN Hai CHENG R.Lawrence EDWARDS Yongli GAO Jessica KELLEY State Key Laboratory of Loess and Quaternary Geology Institute of Earth Environment Chinese Academy of Sciences University of Chinese Academy of Sciences Center for Excellence in Quaternary Science and Global Change Chinese Academy of Sciences Institute of Global Environmental Change Xi'an Jiaotong University Open Studio for Oceanic-Continental Climate and Environment Changes Pilot National Laboratory for Marine Science and Technology Department of Earth Sciences University of Minnesota Department of Geological Sciences University of Texas at San Antonio

Application of X-ray fluorescence core-scanning(XRF-CS) on both marine and lake sediments has achieved remarkable results. However, its application has not been widely extended to the research on speleothems. In this study, we measure the Sr abundance and the Sr/Ca ratios of three stalagmites(two aragonite stalagmites, one calcite stalagmite) using the state-of-the-art fourth-generation Avaatech high-resolution XRF core scanner. Through comparisons among different scan paths and among different scan resolutions, as well as comparisons with inductively coupled plasma optical emission spectrometer(ICP-OES), Itrax XRF, and Artax XRF results, we confirm that the Avaatech XRF core scanner could precisely, quickly, and nondestructively analyze the high-resolution Sr abundance of speleothems. Furthermore, we combine the stalagmite δ^(18)O records to explore the paleoclimatic significance of the measured stalagmite Sr/Ca.

关键词： Avaatech XRF Speleothem Sr/Ca Paleoclimate

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计及电动汽车辅助调频的负荷频率控制联合优化

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电力自动化设备 2019年第3期39卷 200-206页

作者：杨健维董鸿志廖凯蔡亮成西南交通大学电气工程学院四川成都610031

当电动汽车利用车网互动(V2G)技术参与电网一次调频时,其下垂控制特性会影响原负荷频率控制的调频性能。基于此,提出了一种计及电动汽车辅助调频的负荷频率控制联合优化方法。建立了含电动汽车的多区域多机组系统的负荷频率控制模型;在... 详细信息

当电动汽车利用车网互动(V2G)技术参与电网一次调频时,其下垂控制特性会影响原负荷频率控制的调频性能。基于此,提出了一种计及电动汽车辅助调频的负荷频率控制联合优化方法。建立了含电动汽车的多区域多机组系统的负荷频率控制模型;在此基础上,针对电动汽车电池特性及二次调频出力的有效工作范围,考虑系统内机组的特性等,以时间乘以误差绝对值积分(ITAE)为目标函数,建立了电动汽车辅助调频与传统机组二次调频的联合优化模型,并利用粒子群优化算法进行求解。在MATLAB/Simulink中针对阶跃负荷扰动及长时间随机负荷扰动的情况,对联合优化前、后系统的动态响应进行了对比分析。仿真结果表明:所提联合优化方法能有效地改善负荷频率控制的稳态响应速度、优化系统的调频性能,并且能够保证用户对电动汽车的用电需求。

关键词：电动汽车 V2G 负荷频率控制辅助调频下垂控制联合优化

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Simple Preparation of LaPO4:Ce, Tb Phosphors by an Ionic--Liquid--Driven Supported Liquid Membrane System

Simple Preparation of LaPO4:Ce, Tb Phosphors by an Ionic--Li...

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稀土元素镧铈钇应用研究研讨会暨广东省稀土产业技术联盟成立大会

作者： Jianguo Li Hongying dong Fan Yang liangcheng Sun Zhigang Zhao Ruixi Bai Hao Zhang School of Chemical Engineering Inner Mongolia University of Technology Xiamen Institute of Rare Earth Materials Chinese Academy of Sciences Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Provincial Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Baotou Research Institute of Rare Earths

In this work, LaPO:Ce, Tb phosphors were prepared by firing a LaPO:Ce, Tb precipitate using an ionic-liquid-driven supported liquid membrane system. The entire system consisted of three parts: a mixed rare earth ion supply phase, a phosphate supply phase, and an ionic-liquid-driven supporting liquid membrane phase. This method showed the advantages of a high flux, high efficiency, and more controllable reaction process. The release rate of POfrom the liquid film under different types of ionic liquid, the ratio of the rare earth ions in the precursor mixture, and the structure, morphology, and photoluminescence properties of LaPO:Ce, Tb were investigated by inductively coupled plasma-atomic emission spectroscopy, X-ray diffraction, Raman spectra, scanning electron microscopy, and photoluminescence emission spectra methods. The results showed that a pure phase of lanthanum orthophosphate with a monoclinic structure can be formed. Due to differences in the anions in the rare earth supply phase, the prepared phosphors showed micro-spherical(when using rare earth sulfate as the raw material) and nanoscale stone-shape(when using rare earth nitrate as the raw material) morphologies. Moreover, the phosphors prepared by this method had good luminescent properties, reaching a maximum emission intensity under 277 nm excitation with a predominant green emission at 543 nm which corresponded to the 5 D4-7 F5 transition of Tb.

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Research on Assembly Waterproofing Technology of Prefabricated Utility Tunnel

Research on Assembly Waterproofing Technology of Prefabricat...

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作者： liangcheng Li Tian Lu Rubin Jia Yuanyuan Li Wenyan Zhou Ahmed Khater dong Luo China Jikan Research Institute of Engineering Investigations and Design Co.Ltd. College of Civil Engineering and Architecture Xi’an Jiao Tong University

Prefabricated utility tunnel is the key development direction of urban infrastructure in the future because of its greater advantages of quality,construction period,cost and other aspects,compared with cast-in-place *** prefabricated utility tunnel,both of joint type and waterproofing construction could directly affect its function and normal *** paper introduces main types of prefabricated utility tunnels,and compares the performance of frequentlyused waterproof ***,the existing waterproof projects in prefabricated utility tunnel are summarized and analyzed,and the development trend of assembly waterproofing technology in the future is prospected based on the above research.

关键词： Prefabricated assembly Utility tunnel Joint type Waterproof material performance Waterproofing construction

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