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Optimization of Product Distribution for MIP Units Using Data Mining

China Petroleum Processing & Petrochemical Technology 2024年第2期26卷 146-157页

作者： Wang Qing Zhang Xiaoguo Mei Junwei gao Zhibo Yang Kuizhi Yang dawei Ouyang Fusheng International Joint Research Center of Green Energy Chemical Engineering East China University of Science and TechnologyShanghai 200237China SINOPEC Changling Petrochemical Co. LtdYueyang 414012China

Based on data from a petrochemical company’s MIP unit over the past three years,19 input variables and 2 output variables were selected for modeling using the maximum information coefficient and Pearson correlation coefficient among 155 variables,which included properties of feedstock oil and spent catalyst,operational variables,and material *** distillation range variables were reduced using factor analysis,and the feedstock oils were clustered into three types using the K-means++*** feedstock oil type was then used as an input variable for *** XGBoost model and a back propagation(BP)neural network model with a structure of 20-15-15-2 were developed to predict the combined yield of gasoline and propylene,as well as the coke *** the test set,the BP neural network model demonstrated better fitting and generalization abilities with a mean absolute percentage error and determination coefficient of 1.48%and 0.738,respectively,compared to the XGBoost *** was therefore chosen for further optimization *** genetic algorithm was utilized to optimize operational variables in order to increase the combined yield of gasoline and propylene while controlling the growth of coke *** commercial test results in the MIP unit showed an average increase of 1.39 percentage points for the combined yield of gasoline and propylene and an average decrease of 0.11 percentage points for coke *** results indicate that the model effectively improves the combined yield of gasoline and propylene while controlling the increase in coke yield.

关键词： MIP process K-Means++ BP neural network model XGBoost algorithm genetic algorithm

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Decade Milestone Advancement of Defect-Engineered g-C_(3)N_(4) for Solar Catalytic Applications

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Nano-Micro Letters 2024年第4期16卷 153-218页

作者： Shaoqi Hou Xiaochun gao Xingyue Lv Yilin Zhao Xitao Yin Ying Liu Juan Fang Xingxing Yu Xiaoguang Ma Tianyi Ma dawei Su School of Mathematical and Physical Sciences Faculty of ScienceUniversity of Technology Sydney(UTS)SydneyNSW 2007Australia Laboratory of Plasma and Energy Conversion School of Physics and Optoelectronic EngineeringLudong University186 Middle Hongqi RoadYantai 264025People’s Republic of China School of Energy and Environmental Engineering University of Science and Technology BeijingBeijing 100083People’s Republic of China Department of Chemistry The University of Tokyo7‑3‑1 HogoBunkyoTokyoJapan School of Science STEM CollegeRMIT UniversityMelbourneVIC 3000Australia

Over the past decade, graphitic carbon nitride(g-C_(3)N_(4)) has emerged as a universal photocatalyst toward various sustainable carbo-neutral technologies. Despite solar applications discrepancy, g-C_(3)N_(4) is still confronted with a general fatal issue of insufficient supply of thermodynamically active photocarriers due to its inferior solar harvesting ability and sluggish charge transfer dynamics. Fortunately, this could be significantly alleviated by the “all-in-one” defect engineering strategy, which enables a simultaneous amelioration of both textural uniqueness and intrinsic electronic band structures. To this end, we have summarized an unprecedently comprehensive discussion on defect controls including the vacancy/non-metallic dopant creation with optimized electronic band structure and electronic density, metallic doping with ultraactive coordinated environment(M–N_(x), M–C_(2)N_(2), M–O bonding), functional group grafting with optimized band structure, and promoted crystallinity with extended conjugation π system with weakened interlayered van der Waals interaction. Among them, the defect states induced by various defect types such as N vacancy, P/S/halogen dopants, and cyano group in boosting solar harvesting and accelerating photocarrier transfer have also been emphasized. More importantly, the shallow defect traps identified by femtosecond transient absorption spectra(fs-TAS) have also been highlighted. It is believed that this review would pave the way for future readers with a unique insight into a more precise defective g-C_(3)N_(4) “customization”, motivating more profound thinking and flourishing research outputs on g-C_(3)N_(4)-based photocatalysis.

关键词： Defect engineering g-C_(3)N_(4) Electronic band structures Photocarrier transfer kinetics Defect states

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复合变性淀粉在速食冷冻面条中的应用研究

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农产品加工 2024年第7期 24-27,32页

作者：李艳民王利利王旭东王小军温贯虹王博高大伟甘肃丰收农业科技有限公司甘肃天水741020

为开发出一种实用性强,且能提高冷冻面条的抗冻性和复水性,有效改善面条品质的复合变性淀粉,先以冻融稳定性为考查指标,对马铃薯、玉米、木薯、蜡质玉米、小麦和豌豆等原料淀粉的冻融析水率分析检测,选出最佳原料(木薯淀粉);然后以木薯... 详细信息

为开发出一种实用性强,且能提高冷冻面条的抗冻性和复水性,有效改善面条品质的复合变性淀粉,先以冻融稳定性为考查指标,对马铃薯、玉米、木薯、蜡质玉米、小麦和豌豆等原料淀粉的冻融析水率分析检测,选出最佳原料(木薯淀粉);然后以木薯淀粉为原料,制备羟丙基二淀粉磷酸酯、羟丙基淀粉、醋酸酯淀粉、乙酰化二淀粉磷酸酯等不同变性方式的变性淀粉,以冻融稳定性和保水性为考查指标,选出最适宜的2种不同变性方式的产品(木薯羟丙基淀粉和木薯醋酸酯淀粉);以不同取代度为考核指标(羟丙基含量和乙酰基含量),试验制备不同取代度的木薯羟丙基淀粉和木薯醋酸酯淀粉,从而确定产品工艺;最后通过应用试验确定复合变性淀粉的最佳复配比例,即在速食冷冻面条中的添加系数。

关键词：复合变性淀粉冷冻面条乙酰基羟丙基

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Camellia sinensis CsMYB4a participates in regulation of stamen growth by interaction with auxin signaling transduction repressor CsAUX/IAA4

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The Crop Journal 2024年第1期12卷 188-201页

作者： Guoliang Ma Mingzhuo Li Yingling Wu Changjuan Jiang Yifan Chen dawei Xing Yue Zhao Yajun Liu Xiaolan Jiang Tao Xia Liping gao School of Life Science Anhui Agricultural UniversityHefei 230036AnhuiChina Plant for Human Health Institute Department of Plant and Microbial BiologyNorth Carolina State UniversityKannapolisNC 28081USA State Key Laboratory of Tea Plant Biology and Utilization/Key Laboratory of Tea Biology and Tea Processing of Ministry of Agriculture/Anhui Provincial Laboratory of Tea Plant Biology and Utilization Anhui Agricultural UniversityHefei 230036AnhuiChina

Subgroup 4(Sg4)members of the R2R3-MYB are generally known as negative regulators of the phenylpropanoid pathway in *** previous research showed that a R2R3-MYB Sg4 member from Camellia sinensis(CsMYB4a)inhibits expression of some genes in the phenylpropanoid pathway,but its physiological function in the tea plant remained ***,CsMYB4a was found to be highly expressed in anther and filaments,and participated in regulating filament *** analysis and exogenous auxin treatment showed that the target of CsMYB4a might be the auxin signal ***/indole-3-acetic acid 4(AUX/IAA4),a repressor in auxin signal transduction,was detected from a yeast two-hybrid screen using CsMYB4a as *** silencing assays showed that both CsIAA4 and CsMYB4a regulate filament *** plants overexpressing CsIAA4 were insensitive to exogenous a-NAA,consistent with overexpression of ***-protein interaction experiments revealed that CsMYB4a interacts with N-terminal of CsIAA4 to prevent CsIAA4 *** out of the endogenous NtIAA4 gene,a CsIAA4 homolog,in tobacco alleviated filament growth inhibition and a-NAA insensitivity in plants overexpressing *** results strongly suggest that CsMYB4a works synergistically with CsIAA4 and participates in regulation of the auxin pathway in stamen.

关键词： AUX/IAA4 Auxin signaling CsMYB4a Subgroup 4 R2R3-MYB

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Hairy Leaf 6, an AP2/ERF Transcription Factor, Interacts with OsWOX3B and Regulates Trichome Formation in Rice

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Molecular Plant 2017年第11期10卷 1417-1433页

作者： Wenqiang Sun dawei gao Yin Xiong Xinxin Tang Xiongfeng Xiao Chongrong Wang Sibin Yu National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural University Wuhan 430070 China College of Plant Science and Technology Huazhong Agricultural University Wuhan 430070 China

Trichome formation has been extensively studied as a mechanistic model for epidermal cell differentiation and cell morphogenesis in plants. However, the genetic and molecular mechanisms underlying trichome formation （i.e., initiation and elongation） in rice remain largely unclear. Here, we report an AP2/ERF transcription factor, Hairy Leaf 6 （HL6）, which controls trichome formation in rice. Functional analyses revealed that HL6 transcriptionally regulates trichome elongation in rice, which is dependent on functional OsWOX3B, a homeodomain-containing protein that acts as a key regulator in trichome initiation. Biochemical and molecular genetic analyses demonstrated that HL6 physically interacts with OsWOX3B, and both of them regulate the expression of some auxin-related genes during trichome formation, in which OsWOX3B likely enhances the binding ability of HL6 with one of its direct target gene, OsYUCCA5. Popu- lation genetic analysis indicated that HL6 was under negative selection during rice domestication. Taken together, our findings provide new insights into the molecular regulatory network of trichome formation in rice.

关键词： rice trichome development auxin AP2/ERF transcription factor WOX transcription factor

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水稻品种恶苗病抗性评价与筛选

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农学学报 2024年第7期14卷 1-5页

作者：于艳敏武洪涛刘海英徐振华吴立成杨忠良张书利高大伟闫平黑龙江省农业科学院生物技术研究所/黑龙江省作物与家畜分子育种实验室哈尔滨150028 国家耐盐碱水稻技术创新中心东北中心/黑龙江省水稻分子育种工程技术研究中心哈尔滨150028

为了探讨黑龙江省南部稻区水稻品种对恶苗病的抗性级别及水稻恶苗病田间发病情况,筛选水稻恶苗病抗性品种,采用芽期人工接种的方法,调查分析了60份常规粳稻田间恶苗病发病率。结果表明:不同水稻品种恶苗病田间发生程度不同,水稻恶苗病... 详细信息

为了探讨黑龙江省南部稻区水稻品种对恶苗病的抗性级别及水稻恶苗病田间发病情况,筛选水稻恶苗病抗性品种,采用芽期人工接种的方法,调查分析了60份常规粳稻田间恶苗病发病率。结果表明:不同水稻品种恶苗病田间发生程度不同,水稻恶苗病发病率范围为0.8%~39.9%,平均发病率14.6%,筛选到1个高抗水稻品种,26个抗性水稻品种,抗性品种共占73.3%,总体抗感比为11:4,黑龙江省南部水稻品种对恶苗病抗性存在品种间差异,生产上应该提倡种植抗性强的品种以防止病害发生,本研究为病害绿色防控以及水稻恶苗抗病育种提供一定依据。

关键词：水稻品种水稻恶苗病抗性评价品种筛选

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基于动态扩散算法的直流微电网简化分布式二层控制

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电力自动化设备 2024年第1期44卷 119-125页

作者：廖达威高飞上海交通大学电力传输与功率变换控制教育部重点实验室上海200240 上海交通大学电气工程系上海200240

孤岛直流微电网采用下垂控制实现电流均分时,均流效果受馈线阻抗影响且带来电压跌落。为实现电压恢复和电流精确均分,提出了一种采用动态扩散算法的简化分布式二层控制策略。相比于传统二层控制,该简化二层控制策略仅包含1台积分控制器... 详细信息

孤岛直流微电网采用下垂控制实现电流均分时,均流效果受馈线阻抗影响且带来电压跌落。为实现电压恢复和电流精确均分,提出了一种采用动态扩散算法的简化分布式二层控制策略。相比于传统二层控制,该简化二层控制策略仅包含1台积分控制器和1个通信变量,简化了控制结构,减轻了通信链路负担。策略采用动态扩散算法进行分布式通信,改善了系统的收敛速度以及稳定性。考虑到不可忽略通信采样时间对系统稳定性的影响,建立了系统的离散时间小信号模型,绘制根轨迹图分析了二层控制增益和通信采样周期等关键参数对系统稳定性的影响。最后,基于MATLAB/Simulink的仿真结果验证了所提策略在动态性能和稳定性上的优越性。

关键词：直流微电网分布式控制扩散算法离散时间模型二层控制

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夹江二郎庙历史及其与地方社会关系之考析——以清代碑刻为中心

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宗教学研究 2022年第2期 100-109页

作者：盖建民高大伟四川大学道教与宗教文化研究所

夹江二郎庙历史上经历了复杂的祠庙演变,主祀神祇也多有变迁。二郎庙宇在清代有僧人住持,且是僧会司所在地。在地方士绅主导下的庙产经理团体,不仅积极维护庙宇“正祀”地位、稳定庙宇经济来源,而且在庙产管理、庙宇营建中发挥了重要作... 详细信息

夹江二郎庙历史上经历了复杂的祠庙演变,主祀神祇也多有变迁。二郎庙宇在清代有僧人住持,且是僧会司所在地。在地方士绅主导下的庙产经理团体,不仅积极维护庙宇“正祀”地位、稳定庙宇经济来源,而且在庙产管理、庙宇营建中发挥了重要作用,进而对保持庙宇传统祠庙性质产生决定性影响。在对隋嘉州太守赵昱的传统信仰基础上,二郎庙宇形成了“川主二郎神”信仰传统,川主崇拜与二郎神信仰被整合为一体,并由此形成了诸多传统民俗文化。庙中三位“二郎神”共祀一殿的现象是地方民众信仰聚合体的鲜活展现。

关键词：夹江二郎庙川主二郎神清代碑刻庙宇经济地方民众信仰聚合体

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新中国成立前美国在新疆的活动与美苏博弈(1945-1949)

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边界与海洋研究 2022年第5期7卷 109-124页

作者：高大为浙江大学马克思主义学院浙江杭州310058

二战后期,新疆政局发生变化,中苏在新疆问题上的矛盾凸显。此时,美国注重平衡中苏矛盾,以保证反法西斯同盟团结。冷战开始后,美国企图将新疆打造成反苏反共的基地,美苏开始了在新疆的博弈。美国在与苏联争夺新疆政治资源的同时,还逐步... 详细信息

二战后期,新疆政局发生变化,中苏在新疆问题上的矛盾凸显。此时,美国注重平衡中苏矛盾,以保证反法西斯同盟团结。冷战开始后,美国企图将新疆打造成反苏反共的基地,美苏开始了在新疆的博弈。美国在与苏联争夺新疆政治资源的同时,还逐步渗透新疆的社会经济领域,以求通过与国民政府合作控制新疆的石油和矿产资源。同时,美国利用援助手段提升在新疆影响力。美国还积极拉拢反苏势力煽动反苏情绪,挤压苏联在新疆的政治空间。新中国成立前夕,美国作为幕后主使,策动民族分裂分子负隅顽抗,阻挠新疆和平解放,但这些活动均未成功。1949年驻迪化(今乌鲁木齐)领事馆的撤离标志着美国新疆政策的失败。

关键词：美国新疆美苏博弈包懋勋

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Dimensionality-driven metal to Mott insulator transition in two-dimensional 1T-TaSe2

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National Science Review 2024年第3期11卷 108-118页

作者： Ning Tian Zhe Huang Bo Gyu Jang Shuaifei Guo Ya-Jun Yan Jingjing gao Yijun Yu Jinwoong Hwang Cenyao Tang Meixiao Wang Xuan Luo Yu Ping Sun Zhongkai Liu Dong-Lai Feng Xianhui Chen Sung-Kwan Mo Minjae Kim Young-Woo Son dawei Shen Wei Ruan Yuanbo Zhang Advanced Light Source Lawrence Berkeley National Laboratory ShanghaiTech Laboratory for Topological Physics Key Laboratory of Materials Physics Institute of Solid State Physics Hefei Institutes of Physical ScienceChinese Academy of Sciences High Magnetic Field Laboratory Hefei Institutes of Physical Science Chinese Academy of Sciences Collaborative Innovation Centre of Advanced Microstructures Nanjing University Department of Physics University of Science and Technology of China and Key Laboratory of Strongly Coupled Quantum Matter Physics Chinese Academy of Sciences National Synchrotron Radiation Laboratory University of Science and Technology of China State Key Laboratory of Surface Physics New Cornerstone Science Laboratory and Department of PhysicsFudan University Shanghai Qi Zhi Institute Shanghai Research Center for Quantum Sciences Institute for Nanoelectronic Devices and Quantum Computing Fudan University Zhangjiang Fudan International Innovation Center Fudan University State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information Technology(SIMIT)Chinese Academy of Sciences School of Physical Science and Technology ShanghaiTech University Korea Institute for Advanced Study School of Emerging Technology and Department of Physics University of Science and Technology of China

Two-dimensional materials represent a major frontier for research into exotic many-body quantum phenomena. In the extreme two-dimensional limit, electron-electron interaction often dominates over other electronic energy scales, leading to strongly correlated effects such as quantum spin liquid and unconventional *** dominance is conventionally attributed to the lack of electron screening in the third dimension. Here, we discover an intriguing metal to Mott insulator transition in 1T-TaSe2that defies conventional wisdom. Specifically, we find that dimensionality crossover, instead of reduced screening, drives the transition in atomically thin 1T-TaSe2. A dispersive band crossing the Fermi level is found to be responsible for the bulk metallicity in the material. Reducing the dimensionality,however, effectively quenches the kinetic energy of these initially itinerant electrons, and drives the material into a Mott insulating *** dimensionality-driven metal to Mott insulator transition resolves the long-standing dichotomy between metallic bulk and insulating surface of 1T-TaSe2. Our work further reveals a new pathway for modulating two-dimensional materials that enables exploring strongly correlated systems across uncharted parameter space.

关键词： two-dimensional materials 1T-TaSe2 dimensionality crossover metal to Mott insulator transition

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