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基于EMD的锅炉燃烧系统自适应动态模型优化研究

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粘接 2024年第1期51卷 117-120页

作者：辛超孙成田张效源孙凯孙凯进国家能源费县发电有限公司山东费县276001 东南大学江苏南京210096

锅炉燃烧系统的建模是实现锅炉节能减排的基础,为实现燃煤锅炉节能减排,针对现有建模方法多步预测精度不足问题,采用经验模态分解算法把复杂的输出信号转化为多个具有周期性规律或趋势相对平稳的模态信号,降低数据复杂度,基于K近邻联合... 详细信息

锅炉燃烧系统的建模是实现锅炉节能减排的基础,为实现燃煤锅炉节能减排,针对现有建模方法多步预测精度不足问题,采用经验模态分解算法把复杂的输出信号转化为多个具有周期性规律或趋势相对平稳的模态信号,降低数据复杂度,基于K近邻联合互信息法得出迟延时间,提出基于动态时间规整距离进行在线更新的最小二乘支持向量机算法,并进行锅炉燃烧系统的建模,基于锅炉实际运行数据的仿真结果表明,该方法可以有效提高模型的自适应能力和多步预测精度,为后续实现闭环燃烧优化控制打下了良好基础。

关键词：锅炉燃烧系统经验模态分解算法 K近邻联合互信息最小二乘支持向量机

Somite-specific expression of a novel fibronectin variant FN3 is negatively regulated by SHH

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Chinese Science Bulletin 2002年第21期47卷 1807-1811,1850页

作者： ZHAO chengtian zhang Yu SU Ying MENG Anming Department of Biological Science and Biotechnology The Protein Science Laboratory of the Ministry of EducationTsinghua UniversityBeijing 100084China

Fibronectins (FNs) are major extracellular proteins in blood plasma and many tissues of vertebrates, and play important roles in adhesion, migration and differentiation of cells. We have identified a novel variant (FN3) of fibronectin in zebrafish. FN3 mRNA is abundant, as detected by whole-mount in situ hybridization, in the presomitic mesoderm and the newly formed somites, but less abundant in mature somites. Ectopic expression of Sonic Hedgehog (SHH) results in a decrease of FN3 expression, whereas the expression level of FN3 increases in the flhi mutants that lack the notochord. Our results suggest that FN3 may be involved in the formation of somites, but during somite differentiation its expression needs to be downregulated by signals derived from the axial tissues.

关键词： zebrafish fibronectin somite somitogenesis extracellu-lar matrix SHH flh.

Influence of Orifice Position Deviations on Distribution Performance of Gravity-Type Liquid Distributor Analyzed Through Mathematical Pathway

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Transactions of Tianjin University 2018年第2期24卷 152-159页

作者： Jinsheng Sun Zhiwei zhang chengtian Cui Tianpei Li Sheng Fu School of Chemical Engineering and Technology Tianjin University

The distribution performance of the gravity-type liquid distributor(GTLD) significantly affects column operation efficiency and the consequent product quality. In industrial settings, maldistribution is normally considered to be caused by vertical positional or coplanarity errors stemming from deflections associated with manufacture and installation, or even by excessive weight. The lack ofestimation protocols or standards impedes the description ofthis error, which influences the corresponding outflow rates. Given this situation, the paper proposes a lumped parameter, orifice position deviation(OPD), to facilitate the calculation of the relative discharge rate error(RDRE)based on a formula derivation, which allows the systematic analysis of the influence ofa single orifice or weir *** paper introduces a sensitivity factor K as a concise and unified expression in theoretical RDREs for calibrating the influence of OPD on the RDREs ofgeometrically different orifices and weirs. With respect to the GTLD, a larger K indicates the need for more strict OPD requirements. The paper verifies that the extent of GTLD outflow nonuniformity is associated with diverging tendencies regarding its morphology, especially in the orifice and weir, which can be determined using our proposed procedures.

关键词： Liquid distributor Installation Orifice position deviation Relative discharge rate error Sensitivity factor

用N235从独居石优溶渣浸出液中萃取铁的动力学研究

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湿法冶金 2023年第2期42卷 127-132页

作者：梁耕宇苏学斌刘康王桂硕程浩张承天刘忠臣刘会武向秋林核工业北京化工冶金研究院北京101149 中国铀业有限公司北京100013

采用恒界面池法研究了N235从独居石优溶渣浸出液中萃取铁的萃取动力学,在室温下考察了搅拌速度、比界面积、N235体积分数、改性剂仲辛醇体积分数、初始铁质量浓度和盐酸浓度对铁的正向萃取速率的影响。结果表明:搅拌速度小于90 r/min时... 详细信息

采用恒界面池法研究了N235从独居石优溶渣浸出液中萃取铁的萃取动力学,在室温下考察了搅拌速度、比界面积、N235体积分数、改性剂仲辛醇体积分数、初始铁质量浓度和盐酸浓度对铁的正向萃取速率的影响。结果表明:搅拌速度小于90 r/min时,萃取过程由扩散反应控制,铁的萃取速率随搅拌速度增大而增大;搅拌速度大于90 r/min后,萃取速率不再变化,萃取过程为化学反应控制;随比界面积增加,萃取速率加快,萃取过程受界面混合控制;增大铁、盐酸和N235用量可加快萃取速率,增大仲辛醇用量可减缓萃取速率。在室温条件下,独居石优溶渣浸出液中铁的萃取动力学方程为:R 0=0.037[Fe]0.94[HCl]0.72[N235]0.52。

关键词：萃取动力学 N235 优溶渣浸出液恒界面池铁

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Zebrafish as a Model for Human Ciliopathies

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Journal of Genetics and Genomics 2016年第3期43卷 107-120页

作者： Zhu Song Xiaoli zhang Shuo Jia Pamela C.Yelick chengtian Zhao Institute of Evolution & Marine Biodiversity College of Marine Life Science Ocean University of China Department of Orthodontics Division of Craniofacial and Molecular Genetics Tufts University Laboratory for Marine Biology and Biotechnology Qingdao National Laboratory for Marine Science and Technology

Cilia, microtubule-based structures found on the surface of almost all vertebrate cells, play an array of diverse biological functions. Abnormal ciliary axonemal structure and function can result in a class of genetic disorders that are collectively termed ciliopathies. Model organisms, including Chlamydomonas reinhardtii and Caenorhabditis elegans have been widely used to study the complex genetic basis of ciliopathies. Here, we review the advantages of the zebrafish as a vertebrate model for human ciliopathies. We summarize the features of zebrafish cilia, and the major findings and contributions of the zebrafish model in recent studies of human ciliopathies. We also discuss the new genome editing approaches being efficiently used in zebrafish, and the exciting prospects of these approaches in modeling human ciliopathies.

关键词： Cilia Zebrafish Ciliopathy Disease model

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再论澶渊之盟

中州学刊 2024年第1期 125-132页

作者：张希清北京大学历史学系北京100089 北京大学中国古代史研究中心北京100089

北宋景德元年,辽承天太后与圣宗率大军20万南下攻宋,同时命宋降将王继忠致书宋真宗,表示“愿修旧好”。辽军围攻瀛州失败后,绕过大名府,兵临澶州城下。宋真宗亲征至澶州,登上北城门楼,宋军皆呼万岁,气势百倍。辽南京统军使萧挞览(凛)率... 详细信息

北宋景德元年,辽承天太后与圣宗率大军20万南下攻宋,同时命宋降将王继忠致书宋真宗,表示“愿修旧好”。辽军围攻瀛州失败后,绕过大名府,兵临澶州城下。宋真宗亲征至澶州,登上北城门楼,宋军皆呼万岁,气势百倍。辽南京统军使萧挞览(凛)率军攻澶州北城,被宋军伏弩射死,辽军士气大挫。宋辽和议使节经过多次往返,终于订立澶渊之盟。双方相约为“兄弟之国”;“沿边州军,各守疆界”;宋朝岁遗辽朝“绢二十万匹、银一十万两”,作为“助军旅之费”。澶渊之盟结束了长达25年的宋辽战争局面,维持了此后将近120年的和平友好往来,对宋辽双方的社会稳定、经济发展、文化繁荣以及中华民族的融合与发展都起到了重要作用,对当代各民族的平等、团结、互助、和谐也具有借鉴和启迪意义。

关键词：宋真宗兄弟之国寇准澶渊之盟

Biodiversity-based development and evolution:the emerging research systems in model and non-model organisms

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Science China(Life Sciences) 2021年第8期64卷 1236-1280页

作者： Long Zhao Feng Gao Shan Gao Yujun Liang Hongan Long Zhiyi Lv Ying Su Naihao Ye Liusuo zhang chengtian Zhao Xiaoyu Wang Weibo Song Shicui zhang Bo Dong Institute of Evolution and Marine Biodiversity(IEMB) Ocean University of ChinaQingdao 266003China Laboratory for Marine Biology and Biotechnology Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237China College of Fisheries Ocean University of ChinaQingdao 266003China College of Marine Life Sciences Ocean University of ChinaQingdao 266003China Yellow Sea Fisheries Research Institute Chinese Academy of Fishery SciencesQingdao 266071China CAS Key Laboratory of Experimental Marine Biology Institute of OceanologyChinese Academy of SciencesQingdao 266071China

Evolutionary developmental biology,or Evo-Devo for short,has become an established field that,broadly speaking,seeks to understand how changes in development drive major transitions and innovation in organismal *** does so via integrating the principles and methods of many subdisciplines of *** we have gained unprecedented knowledge from the studies on model organisms in the past decades,many fundamental and crucially essential processes remain a *** the tremendous biodiversity of our planet,the current model organisms seem insufficient for us to understand the evolutionary and physiological processes of life and its adaptation to exterior *** currently increasing genomic data and the recently available gene-editing tools make it possible to extend our studies to non-model *** this review,we review the recent work on the regulatory signaling of developmental and regeneration processes,environmental adaptation,and evolutionary mechanisms using both the existing model animals such as zebrafish and Drosophila,and the emerging nonstandard model organisms including amphioxus,ascidian,ciliates,single-celled phytoplankton,and marine *** addition,the challenging questions and new directions in these systems are outlined as well.

关键词： Biodiversity evolutionary planet

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秦汉时期汉中郡乡里校补与地名学分析

陕西理工大学学报（社会科学版） 2024年第1期42卷 84-92页

作者：张新超西南大学历史文化学院重庆400715

随着简牍资料的不断公布,对秦汉乡里制度进行区域个案研究已成为可能。通过梳理和校补史料,新发现秦汉时期汉中郡的乡有5个,分别是西乡、訇乡、壻乡、平乡、汉阳乡,时间均为汉代;新发现的里有11个,其中秦里5个:畜园里、康乐里、州里、... 详细信息

随着简牍资料的不断公布,对秦汉乡里制度进行区域个案研究已成为可能。通过梳理和校补史料,新发现秦汉时期汉中郡的乡有5个,分别是西乡、訇乡、壻乡、平乡、汉阳乡,时间均为汉代;新发现的里有11个,其中秦里5个:畜园里、康乐里、州里、辨阳里、乘田里;汉里6个:析里、平乡里、市阳里、故道里、官里、竹里。加上前人收集的13里,共计5乡24里。通过地名学分析可知,汉中郡的乡名以人文地理类名称为主;里名方面,秦代是自然地理类和人文地理类并重,汉代则以人文地理类为主。秦汉时期里的稳定性问题需要辩证看待。相关结论不仅有助于推进秦汉乡里制度研究,而且具有现实意义。

关键词：秦汉时期汉中郡乡里地名学分析