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A Real-time Prediction System for Molecular-level Information of Heavy Oil Based on Machine Learning

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China Petroleum Processing & Petrochemical Technology 2024年第2期26卷 121-134页

作者： yuan Zhuang Wang yuan Zhang Zhibo yuan Yibo Yang zhe Xu Wei Lin Yang Yan Hao Zhou Xin Zhao Hui Yang Chaohe State Key Laboratory of Chemical Safety SINOPEC Research Institute of Safety Engineering Co.LtdQingdaoShandong 266000People’s Republic of China State Key Laboratory of Heavy Oil Processing China University of PetroleumQingdaoShandong 266580People’s Republic of China College of Chemistry and Chemical Engineering Ocean University of ChinaQingdaoShandong 266100People’s Republic of China

Acquiring accurate molecular-level information about petroleum is crucial for refining and chemical enterprises to implement the“selection of the optimal processing route”*** the development of data prediction systems represented by machine learning,it has become possible for real-time prediction systems of petroleum fraction molecular information to replace analyses such as gas chromatography and mass ***,the biggest difficulty lies in acquiring the data required for training the neural *** address these issues,this work proposes an innovative method that utilizes the Aspen HYSYS and full two-dimensional gas chromatography-time-of-flight mass spectrometry to establish a comprehensive training ***,a deep neural network prediction model is developed for heavy distillate oil to predict its composition in terms of molecular *** training,the model accurately predicts the molecular composition of catalytically cracked raw oil in a *** validation and test sets exhibit R2 values of 0.99769 and 0.99807,respectively,and the average relative error of molecular composition prediction for raw materials of the catalytic cracking unit is less than 7%.Finally,the SHAP(SHapley Additive ExPlanation)interpretation method is used to disclose the relationship among different variables by performing global and local weight comparisons and correlation analyses.

关键词： heavy distillate oil molecular composition deep learning SHAP interpretation method

高速公路生态环境保护基础设施建设示范与经验——以建兴高速生物多样性(鸟类)观测站为例

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环境监控与预警 2024年第5期16卷 37-41页

作者：薛岭邓飞宇袁哲陆凯朱德明殷宝生江苏省交通工程建设局江苏南京210004 江苏环保产业技术研究院股份公司江苏南京210019 江苏省生态环境厅江苏南京210036

高速公路作为关系民生福祉的基础设施,具有促进经济发展、加快区域发展等重要意义,但由于其分割生境、产生噪声等因素,高速公路基础设施的快速发展对沿线生态系统和生物多样性保护带来不利影响,有必要建立生物多样性观测站进行观测评估... 详细信息

高速公路作为关系民生福祉的基础设施,具有促进经济发展、加快区域发展等重要意义,但由于其分割生境、产生噪声等因素,高速公路基础设施的快速发展对沿线生态系统和生物多样性保护带来不利影响,有必要建立生物多样性观测站进行观测评估,科学指导生态保护和管理。建兴高速生物多样性(鸟类)观测站是整合多方力量建成的多样性观测站。探讨了观测站各设计阶段,观测站点的选择原则和空间定位方法,并对观测区域进行了生态系统类型聚类分析。截至2024年5月底,观测站已记录兴化里下河湿地鸟类51种、63万余只(次)。初步分析结果表明,人为干扰低的站点鸟类多样性程度最高。根据该观测站建设实际,提出生物多样性观测站建设因地制宜、长期运营、深化科研、公众参与等4个方面的经验。

关键词：高速公路生物多样性观测站建设经验鸟类

Measurement of solar pp neutrino flux using electron recoil data from PandaX-4T commissioning run

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Chinese Physics C 2024年第9期48卷 1-7,300页

作者： Xiaoying Lu Abdusalam Abdukerim Zihao Bo Wei Chen Xun Chen Yunhua Chen Chen Cheng Zhaokan Cheng Xiangyi Cui Yingjie Fan Deqing Fang Lisheng Geng Karl Giboni Xuyuan Guo Chencheng Han Ke Han Changda He Jinrong He Di Huang Junting Huang Zhou Huang Ruquan Hou Yu Hou Xiangdong Ji Yonglin Ju Chenxiang Li Jiafu Li Mingchuan Li Shuaijie Li Tao Li Qing Lin Jianglai Liu Congcong Lu Lingyin Luo Yunyang Luo Wenbo Ma Yugang Ma Yajun Mao Yue Meng Xuyang Ning Binyu Pang Ningchun Qi Zhicheng Qian Xiangxiang Ren Nasir Shaheed Xiaofeng Shang Xiyuan Shao Guofang Shen Manbin Shen Lin Si Wenliang Sun Yi Tao Anqing Wang Meng Wang Qiuhong Wang Shaobo Wang Siguang Wang Wei Wang Xiuli Wang Xu Wang Zhou Wang Yuehuan Wei Mengmeng Wu Weihao Wu yuan Wu Mengjiao Xiao Xiang Xiao Kaizhi Xiong Binbin Yan Xiyu Yan Yong Yang Chunxu Yu Ying yuan zhe yuan Youhui Yun Xinning Zeng Minzhen Zhang Peng Zhang Shibo Zhang Shu Zhang Tao Zhang Wei Zhang Yang Zhang Yingxin Zhang yuanyuan Zhang Li Zhao Jifang Zhou Ning Zhou Xiaopeng Zhou Yubo Zhou Zhizhen Zhou Research Center for Particle Science and Technology Institute of Frontier and Interdisciplinary ScienceShandong UniversityQingdao 266237China Key Laboratory of Particle Physics and Particle Irradiation of Ministry of Education Shandong UniversityQingdao 266237China School of Physics and Astronomy Shanghai Jiao Tong UniversityKey Laboratory for Particle Astrophysics and Cosmology(MoE)Shanghai Key Laboratory for Particle Physics and CosmologyShanghai 200240China New Cornerstone Science Laboratory Tsung-Dao Lee InstituteShanghai Jiao Tong UniversityShanghai 200240China Shanghai Jiao Tong University Sichuan Research Institute Chengdu 610213China Jinping Deep Underground Frontier Science and Dark Matter Key Laboratory of Sichuan Province Liangshan 615000China Yalong River Hydropower Development Company Ltd.288 Shuanglin RoadChengdu 610051China School of Physics Sun Yat-Sen UniversityGuangzhou 510275China Sino-French Institute of Nuclear Engineering and Technology Sun Yat-Sen UniversityZhuhai 519082China Department of Physics Yantai UniversityYantai 264005China Key Laboratory of Nuclear Physics and Ion-beam Application(MOE) Institute of Modern PhysicsFudan UniversityShanghai 200433China School of Physics Beihang UniversityBeijing 102206China Beijing Key Laboratory of Advanced Nuclear Materials and Physics Beihang UniversityBeijing 102206China Peng Huanwu Collaborative Center for Research and Education Beihang UniversityBeijing 100191China Southern Center for Nuclear-Science Theory(SCNT) Institute of Modern PhysicsChinese Academy of SciencesHuizhou 516000China School of Mechanical Engineering Shanghai Jiao Tong UniversityShanghai 200240China Department of Physics University of MarylandCollege ParkMaryland 20742USA State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China Department of Modern Physics University of Science and Technology of ChinaHefei 230026China School of Physics Peking UniversityBeijing 100871Ch

The proton-proton(pp)fusion chain dominates the neutrino production in the *** uncertainty of the predicted pp neutrino flux is at the sub-percent level,whereas that of the best measurement is O(10%).In this study,for the first time,we measure solar pp neutrinos in the electron recoil energy range from 24 to 144 keV using the PandaX-4T commissioning data with 0.63 tonne×year *** pp neutrino flux is determined as(8.0±3.9(stat)±10.0(syst))×1010 s^(-1)cm^(-2),which is consistent with the Standard Solar Model and existing measurements,corresponding to an upper flux limit of 23.3×10^(10)s^(-1)cm^(-2)at 90%C.L..

关键词： solar pp neutrino flux PandaX-4T electron recoil spectrum

High cerium content(Nd-Pr-Ce)_(2)Fe_(14)B melt-spun ribbons with high coercivity

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Journal of Rare Earths 2024年第4期42卷 690-695页

作者： Yujiang Zhong Junming Wang Zikai yuan Ruijin Liu Minggang Zhu zhe Liu Xin Chen Wei Li Zhaohui Guo Division of Functional Materials Central Iron and Steel Research InstituteBeijing100081China Ningbo Jinji Strong Magnetic Material Co. Ltd.Ningbo315172China Jiangxi Jiangwu Rare Metal New Material Co. Ltd.Nanchang330013China

The effects of wheel speeds on the magnetic properties and microstructures of[(Nd,Pr)_(1-x)Ce_(x)]-Fe-B meltspun ribbons were *** to melt-spun ribbons with low cerium(Ce)content(x=0.2),amorphous formation can be suppressed at high wheel speed in the ribbons with a relatively high Ce content(x=0.8),and with the increase of the wheel speed,the magnetic properties of the ribbons with high Ce content raise *** high wheel speed,the coercivity mechanism of melt-spun ribbons is mainly pinning field,and the high wheel speed introduces a large number of defects into the matrix as pinning ***,ribbons with high Ce content form a fine and uniform grain structure,so the grain boundary area enlarges,which further hinders the movement of domain *** combined effects of the above factors enable ribbons with high Ce content to have excellent magnetic properties(Hcj=0.977 T,Mr=64 m^(2) A/kg)at the wheel speed of 35 m/s.

关键词： Wheel speed Cecontent Microstructure Magnetic properties Rare earths

Imaging Carotid Plaque Burden in Living Mice via Hybrid Semiconducting Polymer Nanoparticles-Based Near-Infrared-II Fluorescence and Magnetic Resonance Imaging

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Research 2024年第3期2023卷 71-81页

作者： Li Xu zhe Li yuan Ma Lingling Lei Renye Yue Hui Cao Shuangyan Huan Wei Sun Guosheng Song State Key Laboratory for Chemo/Bio-Sensing and Chemometrics College of Chemistry and Chemical EngineeringEngineeringHunan UniversityChangsha 410082China. Key Laboratory of Targeted Intervention of Cardiovascular Disease Collaborative Innovation Center for Cardiovascular Disease Translational MedicineNanjingMedical University Department of Cardiology The First Affiliated Hospital of Nanjing Medical UniversityNanjing Medical UniversityNanjing 210029JiangsuChina.

The majority of atherothrombotic events (e.g., cerebral or myocardial infarction) often occur as a result of plaque rupture or erosion in the carotid, and thereby it is urgent to assess plaque vulnerability and predict adverse cerebrovascular events. However, the monitoring evolution from stable plaque into life-threatening high-risk plaque in the slender carotid artery is a great challenge, due to not enough spatial resolution for imaging the carotid artery based on most of reported fluorescent probes. Herein, copolymerizing with the small molecules of acceptor-donor-acceptor-donor-acceptor (A-D-A′-D-A) and the electron-donating units (D′), the screened second near-infrared (NIR-II) nanoprobe presents high quantum yield and good stability, so that it enables to image slender carotid vessel with enough spatial resolution. Encouragingly, NIR-II nanoprobe can effectively target to intraplaque macrophage, meanwhile distinguishing vulnerable plaque in carotid atherosclerosis in living mice. Moreover, the NIR-II nanoprobe can dynamically monitor the fresh bleeding spots in carotid plaque, indicating the increased risk of plaque instability. Besides, magnetic resonance imaging is integrated with NIR-II fluorescence imaging to provide contrast for subtle structure (e.g., narrow lumen and lipid pool), via incorporating ultrasmall superparamagnetic iron oxide into the NIR-II nanoprobe. Thus, such hybrid NIR-II/magnetic resonance imaging multimodal nanoprobe provides an effective tool for assessing carotid plaque burden, selecting high-risk plaque, and imaging intraplaque hemorrhage, which is promising for reducing cerebral/ myocardial infarction-associated morbidity and mortality.

关键词： enough conducting Infrared

Research advancement of DNA-based intelligent hydrogels:Manufacture, characteristics, application of disease diagnosis and treatment

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Chinese Chemical Letters 2024年第10期35卷 92-101页

作者： zhe-Han Yang Jie Yin Lei Xin yuanfang Li Yijie Huang Ruo yuan Ying Zhuo Chongqing Key Laboratory of Catalysis and Functional Organic Molecules College of Environment and ResourcesChongqing Technology and Business UniversityChongqing 400067China Key Laboratory of Luminescence and Real-Time Analytic Chemistry(Southwest University) Ministry of EducationCollege of Chemistry and Chemical EngineeringSouthwest UniversityChongqing 400715China

DNA-based hydrogels are exceptional materials for biological applications because of their numerous advantages such as biodegradability,biocompatibility,hydrophilicity,super absorbency,porosity,and *** these advantages,the ability of DNA-based hydrogels to respond to specific physical and chemical triggers and undergo reversible phase transitions has garnered significant attention in the fields of disease diagnosis(biosensors)and treatment(drug delivery).This article focuses on the recent advancements in the research of DNA-based hydrogels and discusses the different types of these hydrogels,the synthetic methods,their unique properties,and their applications in biosensors and drug *** types of DNA hydrogels are categorized based on their building blocks,and the process of synthesis as well as the unique characteristics of DNA-based hydrogels are ***,DNA-based responsive hydrogels utilized as intelligent materials for the development of biosensors are ***,this article also presents the current status of DNA-based responsive hydrogels in drug delivery for cancer treatment,wound healing,and other therapeutic ***,this paper discusses the current challenges in expanding the practical application of DNA-based hydrogels.

关键词： DNA-based hydrogel Intelligent hydrogel Manufacture Characteristics Diseasediagnosis and treatment

探索亚洲文学阐释系统的新向度——以王和达《亚洲现代文学的兴起与发展》为鉴

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河南大学学报（社会科学版） 2023年第1期63卷 80-85,154页

作者：袁喆四川大学文学与新闻学院四川成都610041

中国文学走向世界必然经过亚洲文学系统的诠释,因而探索以中国视角为向度的亚洲文学阐释系统能够完善世界文学研究体系。《亚洲现代文学的兴起与发展》是由东欧学者王和达等人集体编撰、分析亚洲民族解放运动背景下各国现代文学发生发... 详细信息

中国文学走向世界必然经过亚洲文学系统的诠释,因而探索以中国视角为向度的亚洲文学阐释系统能够完善世界文学研究体系。《亚洲现代文学的兴起与发展》是由东欧学者王和达等人集体编撰、分析亚洲民族解放运动背景下各国现代文学发生发展的著作。借鉴该著作的文学研究系统,能够以文学意识形态功能为框架,即审美意识形态引导的社会意识反映系统,关涉社会生产、生活与制度运行发展的文学阐释机制;以唯物史观的民族发展史为内容,即结合共时和历时的双重结构视野,书写民族文学与世界文学互动关系的历史;以中外文学互动发展为宗旨,即以变异学的理论方法构筑世界文学交流影响的动态阐释系统。最终,探索一条以中国为起点,以世界文学为终点的、由内向外的文学研究路径。

关键词：亚洲文学中国文学变异学唯物史观王和达

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输电线路对短波信号的二次辐射计算模型

高电压技术 2009年第4期35卷 861-865页

作者：张小武干喆渊国网电力科学研究院武汉430074

输电线路对邻近的无线台站的无源干扰目前没有成熟的计算方法,其主要原因在于实际的输电线路模型太过复杂,按照实体模型建模分析计算量过于庞大,计算机无法处理,为了解决此问题,从二次辐射产生的机理出发,采用等效干扰的思路对杆塔和线... 详细信息

输电线路对邻近的无线台站的无源干扰目前没有成熟的计算方法,其主要原因在于实际的输电线路模型太过复杂,按照实体模型建模分析计算量过于庞大,计算机无法处理,为了解决此问题,从二次辐射产生的机理出发,采用等效干扰的思路对杆塔和线路进行合理的简化,提出了可用于计算高压输电线路二次辐射场强的简化模型,实现了工程上无源干扰的模拟仿真。以短波测向台站为研究对象,通过与试验数据对比,证明了该简化模型有足够的准确度,可应用于今后高电压等级输电线路与相邻无线电台站间的电磁防护间距设计。

关键词：无源干扰输电线路二次辐射测向误差防护间距简化模型

超高效液相色谱-串联质谱法测定血清和尿液中有机磷酸酯及其代谢物

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分析化学 2024年第9期52卷 1346-1361页

作者：吴文琪王晓霞刘文彬高丽荣于洋贾天琪石喆元何蕴琛邓静霖陈春赐中国科学院生态环境研究中心环境化学与生态毒理学国家重点实验室中国科学院大学资源与环境学院北京医院内分泌科国科大杭州高等研究院

建立了一种通过少量人血清（1.0 mL）或尿液（1.5 mL）样本，同步分析血清和尿液中19种有机磷酸酯（OPEs）及其二酯代谢物（di-OPEs）的方法。采用乙腈进行液-液提取，ENVI-18固相萃取柱净化，通过超高效液相色谱-串联质谱联用仪（UPLC-... 详细信息

建立了一种通过少量人血清（1.0 mL）或尿液（1.5 mL）样本，同步分析血清和尿液中19种有机磷酸酯（OPEs）及其二酯代谢物（di-OPEs）的方法。采用乙腈进行液-液提取，ENVI-18固相萃取柱净化，通过超高效液相色谱-串联质谱联用仪（UPLC-MS/MS）对目标化合物进行测定。采用Shim-pack GIST C18色谱柱（100 mm×2.1 mm, 2μm）和Shim-pack GIST-HP（G）C18保护柱分离目标物，质谱采用电喷雾离子源（ESI），以多反应监测模式（MRM）的正/负离子模式进行检测。本方法可在15 min内实现所有目标化合物的基线分离，目标化合物在2～100 ng/mL浓度范围内均具有良好的线性关系，血清基质和尿液基质的方法检出限分别为0.001～0.178 ng/mL和0.001～0.119 ng/mL，加标回收率为30.5%～126.8%，相对标准偏差（RSDs）为1%～23%。应用本方法对11个受试者配对的血清和尿液样本进行检测。在所有测试样品中，OPEs的内标回收率为61%～114%, di-OPEs的内标回收率为43%～103%。OPEs及di-OPEs在血清和尿液样本中表现出较高的检出率，血清样本中的OPEs和di-OPEs总浓度为1.580～3.843 ng/mL，尿液样本中的总浓度为5.149～17.537 ng/mL。研究结果表明，本方法能够有效检测生物样本中的OPEs及di-OPEs，同时也揭示了OPEs类化合物在人体内普遍存在的情况及其潜在的暴露风险。

关键词：超高效液相色谱-串联质谱有机磷酸酯代谢产物血清尿液