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

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

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High patatin like phospholipase domain containing 8 expression as a biomarker for poor prognosis of colorectal cancer

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World Journal of Gastrointestinal Oncology 2024年第3期16卷 787-797页

作者： Peng-Yang Zhou De-Xiang Zhu Yi-Jiao Chen Qing-Yang Feng Yi-hao Mao Ao-Bo zhuang Jian-Min Xu Department of General Surgery Zhongshan Hospital Fudan UniversityShanghai 200032China

BACKGROUND Patatin like phospholipase domain containing 8(PNPLA8)has been shown to play a significant role in various cancer *** studies have focused on its roles as an antioxidant and in lipid ***,the role of PNPLA8 in colorectal cancer(CRC)progression is *** To explore the prognostic effects of PNPLA8 expression in *** A retrospective cohort containing 751 consecutive CRC patients was ***8 expression in tumor samples was evaluated by immunohistochemistry staining and semi-quantitated with immunoreactive *** patients were divided into high and low PNPLA8 expression groups based on the cut-off va-lues,which were calculated by X-tile *** prognostic value of PNPLA8 was identified using univariate and multivariate Cox regression *** over-all survival(OS)rates of CRC patients in the study cohort were compared with Kaplan-Meier analysis and Log-rank *** PNPLA8 expression was significantly associated with distant metastases in our cohort(P=0.048).CRC patients with high PNPLA8 expression indicated poor OS(median OS=35.3,P=0.005).CRC patients with a higher PNPLA8 expression at either stage I and II or stage III and IV had statistically significant shorter *** patients with left-sided colon and rectal cancer,the survival curves of two PN-PLA8-expression groups showed statistically significant *** analysis also confirmed that high PNPLA8 expression was an independent prog-nostic factor for overall survival(hazard ratio HR=1.328,95%CI:1.016-1.734,P=0.038).

关键词： Biomarker Colorectal cancer Expression level Overall survival Patatin like phospholipase domain containing 8 Prognosis

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Molecular solid solution of lanthanide-titanium-oxo clusters with enhanced photocatalytic hydrogen evolution

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Science China Chemistry 2024年第2期67卷 529-535页

作者： Rong Chen Chao-Long Chen Hui Zhang Zi-Han Wang Fu-Li Sun Ming-hao Du Gui-Lin zhuang Cheng Wang La-Sheng Long Lan-Sun Zheng Xiang-Jian Kong Collaborative Innovation Centre of Chemistry for Energy Materials State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry College of Chemistry and Chemical EngineeringXiamen UniversityXiamen361005China College of Chemical Engineering Zhejiang University of TechnologyHangzhou310032China

Molecular solid solutions of metal clusters containing different metal centers with well-defined structures can accurately regulate the HOMO-LUMO gap,but are rarely ***,a series of colorless lanthanide-titanium-oxo clusters Ln_(2)Ti_4(μ_(2)-O)_(2)(μ_(3)-O)_4(Piv)_(10)(THF)_(2)(Ln_(2)Ti_4,Ln = Eu,Gd,Tb,and Ce,HPiv = pivalic acid) were synthesized by the reaction of pivalic acid with Ln(Ac)_(3) and titanium *** light yellow crystal of cluster solid solutions Eu_(2)Ti_(4-x)Cd_(x),containing a mixture of Eu_(2)Ti_4 and Eu_(2)Ti_(3)Cd,was obtained by in situ doping Cd^(2+) and S^(2–).Eu_(2)Ti_(3.92)Cd_(0.08) displays efficient photocatalytic hydrogen evolution activity without a co-catalyst,which is up to 2.6 times that of Eu_(2)Ti_*** time-resolved transient absorption spectroscopy and spin-polarized density functional calculations showed that the enhanced photocatalytic performance of Eu_(2)Ti_(4-x)Cd_(x) can be attributed to the narrower HOMO-LUMO gap and lower LUMO position than that of Eu_(2)Ti_*** studyprovides an in situ doping method to realize the simple preparation of cluster solid solution.

关键词： molecular solid solution lanthanide-titanium-oxo clusters photocatalytic hydrogen evolution

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Characteristics and drivers of the soil multifunctionality under different land use and land cover types in the drylands of China

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Regional Sustainability 2024年第3期5卷 99-110页

作者： SONG Boyi ZHANG Shihang LU Yongxing GUO hao GUO Xing WANG Mingming ZHANG Yuanming ZHOU Xiaobing zhuang Weiwei College of Life Sciences Xinjiang Normal UniversityUrumqi830054China State Key Laboratory of Desert and Oasis Ecology Key Laboratory of Ecological Safety and Sustainable Development in Arid LandsXinjiang Institute of Ecology and GeographyChinese Academy of SciencesUrumqi830011China Xinjiang Key Laboratory of Biodiversity Conservation and Application in Arid Lands Xinjiang Institute of Ecology and GeographyChinese Academy of SciencesUrumqi830011China Xinjiang Field Scientific Observation Research Station of Tianshan Wild Fruit Forest Ecosystem Ili Botanical GardenXinjiang Institute of Ecology and GeographyChinese Academy of SciencesIli844900China University of Chinese Academy of Sciences Beijing100049China

The drylands of China cover approximately 6.6×106 km2 and are home to approximately 5.8×10^(8)people,providing important ecosystem services for human survival and ***,dryland ecosystems are extremely fragile and sensitive to external environmental *** use and land cover(LULC)changes significantly impact soil structure and function,thus affecting the soil multifunctionality(SMF).However,the effect of LULC changes on the SMF in the drylands of China has rarely been *** this study,we investigated the characteristics of the SMF changes based on soil data in the 1980s from the National Tibetan Plateau Data *** explored the drivers of the SMF changes under different LULC types(including forest,grassland,shrubland,and desert)and used structural equation modeling to explore the main driver of the SMF *** results showed that the SMF under the four LULC types decreased in the following descending order:forest,grassland,shrubland,and *** main driver of the SMF changes under different LULC types was mean annual temperature(MAT).In addition to MAT,pH in forest,soil moisture(SM)and soil biodiversity index in grassland,SM in shrubland,and aridity index in desert are crucial factors for the SMF ***,the SMF in the drylands of China is regulated mainly by MAT and pH,and comprehensive assessments of the SMF in drylands need to be performed regarding LULC *** results are beneficial for evaluating the SMF among different LULC types and predicting the SMF under global climate change.

关键词： Soil multifunctionality(SMF) Land use and land cover(LULC)changes Structural equation modeling(SEM) Climate change Dryland ecosystems

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联合连通拓扑下的二阶多自主体系统有限时间包容控制

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智能系统学报 2017年第2期12卷 188-195页

作者：庄昊杨洪勇鲁东大学信息与电气工程学院山东烟台264025

针对具有多领航者的二阶网络化系统群集运动问题,提出了一种有限时间收敛的包容控制算法。在此基础上,运用现代控制理论、代数图论和矩阵论等分析工具对所提出的控制算法进行理论分析,得到了当通信拓扑为动态联合连通时,二阶网络化系统... 详细信息

针对具有多领航者的二阶网络化系统群集运动问题,提出了一种有限时间收敛的包容控制算法。在此基础上,运用现代控制理论、代数图论和矩阵论等分析工具对所提出的控制算法进行理论分析,得到了当通信拓扑为动态联合连通时,二阶网络化系统在有限时间内实现群集运动的收敛条件。通过此包容控制算法,使得系统在静态拓扑和联合连通条件下均在有限时间内收敛到目标区域内。最后,应用系统仿真验证了所得结论的正确性。

关键词：多领航者群集运动有限时间联合连通包容控制

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Optical conductivity-based ultrasensitive mid-infrared biosensing on a hybrid metasurface

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Light(Science & Applications) 2018年第1期7卷 405-415页

作者： Yibo Zhu Zhaoyi Li zhuang hao Christopher DiMarco Panita Maturavongsadit Yufeng hao Ming Lu Aaron Stein Qian Wang James Hone Nanfang Yu Qiao Lin Department of Mechanical Engineering Columbia UniversityNew YorkNY 10027USA Department of Applied Physics and Applied Math Columbia UniversityNew YorkNY 10027USA Department of Chemistry and Biochemistry University of South CarolinaColumbiaSC 29208USA National Laboratory of Solid State Microstructures College of Engineering and Applied Sciencesand Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093China Center for Functional Nanomaterials Brookhaven National LaboratoryUptonNY 11973USA

Optical devices are highly attractive for biosensing as they can not only enable quantitative measurements of analytes but also provide information on molecular ***,typical refractive index-based optical sensors do not have sufficient sensitivity to probe the binding of low-molecular-weight ***-optical devices such as field-effect transistors can be more sensitive but do not offer some of the significant features of optical devices,particularly molecular *** present optical conductivity-based mid-infrared(mid-IR)biosensors that allow for sensitive and quantitative measurements of low-molecular-weight analytes as well as the enhancement of spectral *** sensors employ a hybrid metasurface consisting of monolayer graphene and metallic nano-antennas and combine individual advantages of plasmonic,electronic and spectroscopic ***,the hybrid metasurface sensors can optically detect target molecule-induced carrier doping to graphene,allowing highly sensitive detection of low-molecular-weight analytes despite their small ***,the resonance shifts caused by changes in graphene optical conductivity is a well-defined function of graphene carrier density,thereby allowing for quantification of the binding of ***,the sensor performance is highly stable and consistent thanks to its insensitivity to graphene carrier mobility ***,the sensors can also act as substrates for surfaceenhanced infrared *** demonstrated the measurement of monolayers of sub-nanometer-sized molecules or particles and affinity binding-based quantitative detection of glucose down to 200 pM(36 pg/mL).We also demonstrated enhanced fingerprinting of minute quantities of glucose and polymer molecules.

关键词： conductivity surface Optical

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突出需求导向扩大西藏公共服务有效供给——基于拉萨市城区公共服务满意度的调查分析

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西藏研究 2018年第4期 76-86页

作者：庄皓王静西藏自治区旅游发展委员会西藏拉萨850000 西藏自治区人民政府新闻办公室西藏拉萨850000

伴随着我国社会主要矛盾已经转化为人民日益增长的美好生活需要和不平衡不充分的发展之间的矛盾,如何满足人民日益增长的美好生活需要,已成为当前推进基本公共服务均等化的最大挑战。目前,拉萨市城区居民的基本公共服务整体满意度在藏... 详细信息

伴随着我国社会主要矛盾已经转化为人民日益增长的美好生活需要和不平衡不充分的发展之间的矛盾,如何满足人民日益增长的美好生活需要,已成为当前推进基本公共服务均等化的最大挑战。目前,拉萨市城区居民的基本公共服务整体满意度在藏汉民族间不存在显著差异,但在医疗卫生、义务教育、就业和社会保障、公共安全、文化服务等不同领域则存在着类别差异和结构差异,且在各个领域都存在着明显的短板。立足西藏公共服务供给地方政府责任,当前迫切需要建立需求导向的精细化公共服务供给体系,充分发挥市场在公共服务建设中的积极作用,切实强化公共服务人才支撑,不断扩大公共服务有效供给,持续提升公共服务投入效率和发展水平。

关键词：公共服务需求供给

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Biomaterials-based anti-inflammatory treatment strategies for Alzheimer's disease

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Neural Regeneration Research 2024年第1期19卷 100-115页

作者： Jianjian Chu Weicong Zhang Yan Liu Baofeng Gong Wenbo Ji Tong Yin Chao Gao Danqi Liangwen Mengqi hao Cuimin Chen Jianhua zhuang Jie Gao You Yin Department of Neurology Second Affiliated Hospital(Shanghai Changzheng Hospital)of Naval Medical UniversityShanghaiChina School of Pharmacy University College LondonLondonUK Department of Clinical Pharmacy Xinhua HospitalShanghai Jiao Tong University School of MedicineClinical Pharmacy Innovation InstituteShanghai Jiao Tong University School of MedicineShanghaiChina School of Health Science and Engineering University of Shanghai for Science and TechnologyShanghaiChina Changhai Clinical Research Unit Shanghai Changhai HospitalNaval Medical UniversityShanghaiChina

The current therapeutic drugs for Alzheimer's disease only improve symptoms,they do not delay disease *** re,there is an urgent need for new effective *** underlying pathogenic factors of Alzheimer's disease are not clear,but neuroinflammation can link various hypotheses of Alzheimer's disease;hence,targeting neuroinflammation may be a new hope for Alzheimer's disease *** inflammation can restore neuronal function,promote neuro regeneration,reduce the pathological burden of Alzheimer's disease,and improve or even reverse symptoms of Alzheimer's *** review focuses on the relationship between inflammation and various pathological hypotheses of Alzheimer's disease;reports the mechanisms and characteristics of small-molecule drugs(e.g.,nonsteroidal anti-inflammatory drugs,neurosteroids,and plant extracts);macromolecule drugs(e.g.,peptides,proteins,and gene therapeutics);and nanocarriers(e.g.,lipid-based nanoparticles,polymeric nanoparticles,nanoemulsions,and inorganic nanoparticles)in the treatment of Alzheimer's *** review also makes recommendations for the prospective development of anti-inflammatory strategies based on nanocarriers for the treatment of Alzheimer's disease.

关键词： Alzheimer's disease anti-inflammation blood-brain barrier drug delivery microglia nanoparticles neuroinflammation plant extracts

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一种快速分形图像编码算法

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信号处理 2008年第1期24卷 152-156页

作者：杨好庄赵耀北京交通大学信息科学研究所北京100044

目前,分形图像编码技术最主要的缺点仍然是编码时间太长。因此,如何提高分形图像编码速度成为当前分形图像编码技术的研究热点。本文从分形图像编码通用公式推导出一个不等式,利用此不等式,可以预先排除大量不可能与值域块匹配的定义域... 详细信息

目前,分形图像编码技术最主要的缺点仍然是编码时间太长。因此,如何提高分形图像编码速度成为当前分形图像编码技术的研究热点。本文从分形图像编码通用公式推导出一个不等式,利用此不等式,可以预先排除大量不可能与值域块匹配的定义域块,从而减少值域块与定义域块的匹配计算,以此达到缩短编码时间的目的。实验结果表明,在解码图像质量基本不变情况下,本文的方法所使用的编码时间比Fisher方案所需的编码时间减少了很多。

关键词：分形图像编码不等式算法值域块

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基于深度学习的GPS水准拟合方法

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测绘科学 2021年第4期46卷 57-62页

作者：董洲洋徐卫明庄昊孟浩海军大连舰艇学院军事海洋与测绘系辽宁大连116000 32023部队辽宁大连116000

针对数学拟合法在进行全球定位系统(GPS)水准拟合时,因受自身模型限制,导致GPS水准拟合精度不高的问题,该文提出了一种基于EGM2008模型和深度学习的GPS水准拟合法。首先使用深度学习中的分段线性整流函数(ReLU)作为神经元激活函数加快... 详细信息

针对数学拟合法在进行全球定位系统(GPS)水准拟合时,因受自身模型限制,导致GPS水准拟合精度不高的问题,该文提出了一种基于EGM2008模型和深度学习的GPS水准拟合法。首先使用深度学习中的分段线性整流函数(ReLU)作为神经元激活函数加快网络的收敛速度,然后利用自适应矩估计函数(Adam)作为优化函数加速获取最优解,并采用正则化丢弃法(Dropout)增强深度学习网络的泛化能力。通过实测数据计算表明:该文方法相比常用的多项式拟合法,丘陵地区外符合精度提高了约65%,达到1.7 cm;高差变化较大的山地外符合精度提高了约90%,达到1.2 cm。

关键词： EGM2008模型 GPS水准拟合 “移去-恢复”法深度学习

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