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Science China(Information Sciences) 2024年第3期67卷 182-196页

作者： ruiming xie Shengyuan XU Nanjing University of Science and Technology School of Automation

In this paper, we solve the output feedback control problem of stochastic high-order planar nonlinear systems with output constraint and stochastic integral input-to-state stability(SiISS) inverse dynamics. By employing a key coordinate transformation, a stochastic nonlinear system with output constraint and SiISS inverse dynamics is converted into an unconstrained system. By skillfully constructing an observer and adopting SiISS small-gain conditions, we develop a new output feedback control design and analysis method, and prove that all the closed-system signals are bounded almost surely, the output constraint is not violated almost surely, and the equilibrium point of the closed-loop system is stochastically asymptotically stable.

关键词： stochastic high-order planar nonlinear system outputconstraint stochastic inverse dynamics output feedbackstabilization stochastic integral input-to-state stability(SiISS)

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Fixed-time stabilization of output-constrained stochastic high-order nonlinear systems

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Science China(Information Sciences) 2024年第4期67卷 5-20页

作者： ruiming xie Shengyuan XU Nanjing University of Science and Technology School of Automation

In this study, the fixed-time stabilization problem of stochastic high-order nonlinear systems with output constraint and high-order and low-order nonlinearities is addressed. A new coordinate transformation is employed to directly convert output-constrained stochastic systems into an equivalent unconstrained *** fully extracting the characteristics of system nonlinearities and using the stochastic fixed-time stability theorem, a new design and analysis method is constructed to guarantee that the trivial solution of the closed-loop system is stochastically fixed-time stable while fulfilling the output constraint.

关键词： stochastic high-order nonlinear system outputconstraint high-order and low-order nonlinearity fixed-timestabilization finite-time stabilization

Preassigned Finite-Time Control of High-Order Nonlinear Systems with Time-Varying Powers and Full-State Constraints

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Preassigned Finite-Time Control of High-Order Nonlinear Syst...

SEPARATION OF RARE EARTH ELEMENTS (REE) BY THIN-LAYER CHROMATOGRAPHY——STUDY OF MONO TETRADECYL PHOSPHORIC ACID SYSTEM

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作者： ruiming xie Yungang Liu School of Control Science and Engineering Shandong University

This paper studies adaptive preassigned finite-time control of high-order nonlinear systems with unknown timevarying powers and full-state constraints. Neural network approximation is employed to remove frequently used assumptions imposed on unknown system nonlinearities. By introducing lower and higher powers, finite-time performance functions and nonlinear transformed functions into dynamic surface control design, full-state constrained controller is designed without imposing feasibility conditions on virtual controllers in traditional barrier Lyapunov function-based control methods. It is proved that all the closed-system signals are semi-globally bounded, full-state constraints are not violated, and system states converge to prescribed small regions around zero after a preassigned finite-time.

关键词： High-order nonlinear systems unknown time-varying powers full-state constraints adaptive neural networks preassigned finite-time control feasibility conditions

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Chinese Science Bulletin 1987年第15期32卷 1041-1045页

作者：罗焕光谢瑞明 Laboratory of Analytical Chemistry Wuhan University

In the last ten years, the study of thin-layer chromatographic separation of the rare earth elements （REE） has been developed rapidly. H. Specker et *** separated successfully 14 REEs by TLG on stationary phase silanised silica gel and the developing solvent dietbyl ether-tetrahydrofuran-bis-（2-ethylhexyl）phosphate-concentrated *** a previous paperr, we described the satisfactory separation of 5 light REEs by TLG using mono-tetradecyl phosphoric acid as a developing solvent.

关键词： stationary silica ethylhexyl satisfactory separated REE ACID concentrated spots nitrate

浅探央企国外项目HSE管理与欧美企业HSE管理模式接轨

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城市建筑 2014年第17期11卷 393-393页

作者：谢瑞明中国水利水电第八工程局有限公司长沙410000

HSE更加注重企业的安全管理。近些年来，我国央企海外投资不断扩张，很多企业按照 HSE 的管理体系来进行海外项目的管理。本文就 HSE 管理体系的现状进行了分析，并提出了央企在海外与欧美企业在 HSE 安全管理上接轨的策略。

关键词：央企欧美企业安全管理

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滚动轴承钢碳氮共渗工艺研究

大连交通大学学报 2024年第1期45卷 84-91页

作者：刘德义谢卿东任瑞铭大连交通大学材料科学与工程学院辽宁大连116028 辽宁省轨道交通关键材料重点实验室辽宁大连116028

以GCr15和GCr15SiMn轴承钢为研究对象,进行不同工艺的碳氮共渗热处理实验研究。利用光学显微镜观察试样热处理后的显微组织、晶粒度,利用X-射线衍射仪分析热处理后残余奥氏体的含量,利用硬度仪测量试样热处理后的硬度变化规律,研究共渗... 详细信息

以GCr15和GCr15SiMn轴承钢为研究对象,进行不同工艺的碳氮共渗热处理实验研究。利用光学显微镜观察试样热处理后的显微组织、晶粒度,利用X-射线衍射仪分析热处理后残余奥氏体的含量,利用硬度仪测量试样热处理后的硬度变化规律,研究共渗温度对渗层组织和性能的影响。研究结果表明:考虑碳氮共渗层深度、显微组织、晶粒度以及硬度综合因素,碳氮共渗温度控制在820℃,碳势控制在1.18%,进行淬火和低温回火的组织和性能较好。该工艺下增加冷处理,GCr15SiMn试样表面硬度从64.5 HRC提高至66.1 HRC,表面残余奥氏体量从22.1%下降至12.5%。冷处理有效降低了表面残余奥氏体含量。

关键词：碳氮共渗 GCr15钢 GCr15SiMn钢显微组织

河南省乡镇尺度冬小麦灌溉碳排放强度空间格局及影响因素分析

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中国农业科学 2024年第5期57卷 950-964页

作者：朱瑞明赵荣钦焦士兴李小建肖连刚谢志祥杨青林王帅张慧芳华北水利水电大学测绘与地理信息学院河南大学地理与环境学院安阳师范学院资源环境与旅游学院

【目的】探索不同乡镇和灌溉模式的农业碳排放空间格局及其影响机制，揭示农业水资源和能源消耗的组合特征差异，为农业灌溉模式优化、水资源与能源节约以及低碳可持续发展提供参考依据。【方法】利用遥感影像、气象数据、统计资料和问... 详细信息

【目的】探索不同乡镇和灌溉模式的农业碳排放空间格局及其影响机制，揭示农业水资源和能源消耗的组合特征差异，为农业灌溉模式优化、水资源与能源节约以及低碳可持续发展提供参考依据。【方法】利用遥感影像、气象数据、统计资料和问卷调研等多源数据，对河南省乡镇尺度冬小麦灌溉碳排放强度及其空间分布格局进行分析，对比不同灌溉模式(雨养为主的灌溉模式，PI模式；地表水灌溉为主的灌溉模式，SWI模式；引水灌溉工程为主的灌溉模式，WDI模式；地下水灌溉为主的灌溉模式，GI模式)下的碳排放强度差异，并通过地理探测器探究其影响机制。【结果】(1)2018年河南省乡镇尺度冬小麦灌溉碳排放强度均值为15.05 kg·t-1，并呈现出由西向东波动下降和从北向南减少的空间分布格局。碳排放强度高(>20.64 kg·t-1)的乡镇主要集中在西部高海拔地区，碳排放强度低(<13.76 kg·t-1)的乡镇主要分布在东南部地区。(2)4种灌溉模式中，冬小麦单位产量灌溉碳排放强度最高的是PI模式(22.22 kg·t-1)，最低的是SWI模式(11.05 kg·t-1)。(3)平均海拔与有效降水量对碳排放强度空间分异的解释力分别达到49%和39%，是影响冬小麦灌溉碳排放强度的关键因素。同一驱动因素在不同灌溉模式下的影响具有差异性，能源消耗对WDI模式下的冬小麦灌溉碳排放强度空间分异格局的影响力最强，土地投入强度在GI模式下的驱动作用最为显著。此外，不同驱动因素交互作用后具有双因子增强效应和非线性增强效应。【结论】河南省乡镇尺度冬小麦灌溉碳排放强度存在空间异质性和灌溉模式差异，PI模式的冬小麦灌溉碳排放强度最高，WDI模式的碳排放量最高。平均海拔与降水是主导河南省乡镇尺度冬小麦灌溉碳排放强度空间分异格局形成的主要原因，人为因素则是不同灌溉模式下灌溉碳排放强度空间分异的主导力量。

关键词：碳排放乡镇尺度灌溉模式冬小麦碳排放强度驱动因素河南省

1.5T光纤磁共振ASL、DTI、DWI及MRS评价急性缺血性脑梗死缺血半暗带的应用价值

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影像研究与医学应用 2018年第21期2卷 28-30页

作者：李启原小军谢瑞明孔建忠王增马晓亮王旭包头市第八医院医学影像科内蒙古包头014040

目的:对1.5T光纤磁共振三维动脉自旋标记(ASL)、磁共振弥散张量成像(DTI)、弥散加权成像(DWI)及氢质子波谱(MRS)评价急性缺血性脑梗死缺血半暗带(IP)的应用价值进行分析和比较。方法:以我院2016年4月—2018年1月期间收治的30例初诊为急... 详细信息

目的:对1.5T光纤磁共振三维动脉自旋标记(ASL)、磁共振弥散张量成像(DTI)、弥散加权成像(DWI)及氢质子波谱(MRS)评价急性缺血性脑梗死缺血半暗带(IP)的应用价值进行分析和比较。方法:以我院2016年4月—2018年1月期间收治的30例初诊为急性脑梗死的患者为研究对象,对所有患者行1.5T光纤磁共振常规扫描及DWI、ASL、DTI及MRS扫描,对比分析不同方法的检测结果。结果:在DWI图像上,患者中心梗死区与IP区、对侧镜像区的ADC值存在显著差异(P 0.05);在ASL图像上中心梗死区与IP区、对侧镜像区两两之间CBF值均有显著性差异(P <0.05);DTI检测中心梗死区、IP区与镜面对侧区两两之间的FA值均具有显著差异(P <0.05);1H-MRS检测,脑梗死病灶NAA值由正常组织至核心区逐步下降,与此同时Lac逐步增高。结论:1.5T光纤磁共振ASL、DTI、DWI及MRS的联合应用是评价急性缺血性脑梗死缺血半暗带的有效途径,能够在判断患者缺血半暗带是否存在的基础上,准确界定患者缺血半暗带范围,临床应用价值显著。

关键词： ASL DTI DWI MRS 急性缺血性脑梗死缺血半暗带

Nobiletin and its derivatives overcome multidrug resistance(MDR) in cancer:total synthesis and discovery of potent MDR reversal agents

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Acta Pharmaceutica Sinica B 2020年第2期10卷 327-343页

作者： Senling Feng Huifang Zhou Deyan Wu Dechong Zheng Biao Qu ruiming Liu Chen Zhang Zhe Li Ying xie Hai-Bin Luo School of Pharmacy State Key Laboratory for Quality Research in Chinese MedicinesMacao University of Science and TechnologyAvenida Wai LongTaipaMacaoChina School of Pharmaceutical Sciences Sun Yat-Sen UniversityGuangzhou 510006China

Our recent studies demonstrated that the natural product nobiletin(NOB)served as a promising multidrug resistance(MDR)reversal agent and improved the effectiveness of cancer chemotherapy in ***,low aqueous solubility and difficulty in total synthesis limited its application as a therapeutic *** tackle these challenges,NOB was synthesized in a high yield by a concise route of six steps and fourteen derivatives were synthesized with remarkable solubility and *** the compounds showed improved sensitivity to paclitaxel(PTX)in P-glycoprotein(P-gp)overexpressing MDR cancer *** them,compound 29 d exhibited water solubility 280-fold higher than NOB.A drug-resistance A549/T xenograft model showed that 29 d,at a dose of 50 mg/kg co-administered with PTX(15 mg/kg),inhibited tumor growth more effective than NOB and remarkably increased PTX concentration in the tumors via P-gp ***,Western blot experiments revealed that 29 d inhibited expression of NRF2,phosphorylated ERK and AKT in MDR cancer cells,thus implying 29 d of multiple mechanisms to reverse MDR in lung cancer.

关键词： Nobiletin Cancer multidrug resistance Mechanism P-gp inhibition Reversal agents Solubility Total synthesis

Mapping of wheat stripe rust resistance gene Yr041133 by BSR-Seq analysis

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The Crop Journal 2022年第2期10卷 447-455页

作者： Yahui Li ruiming Lin Jinghuang Hu Xiaohan Shi Dan Qiu Peipei Wu Gebremedhin Habteab Goitom Siqi Wang Hongjun Zhang Li Yang Hongwei Liu Qiuhong Wu Jingzhong xie Yang Zhou Zhiyong Liu Hongjie Li The National Engineering Laboratory of Crop Molecular Breeding Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China Institute of Genetics and Developmental Biology The Innovative Academy of Seed DesignChinese Academy of SciencesBeijing 100101China State Key Laboratory for Biology of Diseases and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193China College of Humanities and Development Studies China Agricultural UniversityBeijing 100083China

Puccinia striiformis Westend. f. sp. tritici(Pst) pathotype CYR34 is widely virulent and prevalent in ***, we report identification of a strpie rust resistance(Yr) gene, designated Yr041133, in winter wheat line 041133. This line produced a hypersensitive reaction to CYR34 and conferred resistance to 13 other pathotypes. Resistance to CYR34 in line 041133 was controlled by a single dominant gene. Bulked segregant RNA sequencing(BSR-Seq) was performed on a pair of RNA bulks generated by pooling resistant and susceptible recombinant inbred lines. Yr041133 was mapped to a 1.7 c M genetic interval on the chromosome arm 7 BL that corresponded to a 0.8 Mb physical interval(608.9–609.7 Mb) in the Chinese Spring reference genome. Based on its unique physical location Yr041133 differred from the other Yr genes on this chromosome arm.

关键词： Bulked segregant analysis Genetic mapping Puccinia striiformis f.sp.tritici Triticum aestivum Yellow rust