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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)

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

Review of the research on the development and utilization of clay-type lithium resources

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Particuology 2024年第4期87卷 46-53页

作者： Ruiqi xie Zhihui Zhao Xiong Tong Xian xie Qiang Song Peiqiang Fan Faculty of Land Resource Engineering Kunming University of Science and TechnologyKunming650093China Yunnan Engineering Research Center for Metal Tailings Resource Utilization Kunming650093China

Since the demands for lithium have been in explosive growth recently and several great clay lithium resources were founded in China,the development and utilization of clay-type lithium resources become a hot *** order to provide a guidance for the concentration and extracting lithium of clay-type lithium resources,this review systematically summarized the main types and characteristics of clay-type lithium resources and the research status of lithium extraction from clay lithium ***,the flotation research status of the main mineral of clay lithium ore was also ***,we discussed the difficulties in the development and utilization of clay-type lithium ore and put forward the subsequent research *** paper can provide a guidance for the con-centration and extracting lithium of clay-type lithium resources in the future.

关键词： Clay lithium Clay mineral flotation Lithium extraction Leaching

麻醉诱导后不同维持麻醉方法对老年肿瘤患者手术后认知功能的影响

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中国社区医师 2017年第20期33卷 42-43页

作者：谢洪元山东省莒县中医医院 276500

目的:探讨麻醉诱导后不同维持麻醉方法对老年肿瘤患者手术后认知功能的影响。方法:收治外科手术肿瘤患者108例(60岁以上),分为A组和B组。A组采用持续静脉泵注丙泊酚维持麻醉,B组采用静脉泵注丙泊酚+吸入异氟醚维持麻醉,比较两组苏醒情... 详细信息

目的:探讨麻醉诱导后不同维持麻醉方法对老年肿瘤患者手术后认知功能的影响。方法:收治外科手术肿瘤患者108例(60岁以上),分为A组和B组。A组采用持续静脉泵注丙泊酚维持麻醉,B组采用静脉泵注丙泊酚+吸入异氟醚维持麻醉,比较两组苏醒情况和认知功能。结果:两组术后苏醒时间、拔管时间、话语时间和认知功能障碍发生率比较,差异无统计学意义(P>0.05)。A组认知功能恢复正常时间明显低于B组(P<0.05)。结论:静脉麻醉维持对老年肿瘤患者术后认知功能的影响小于静吸复合麻醉维持。

关键词：全凭静脉麻醉维持静吸复合麻醉维持老年肿瘤认知功能

Conductive and stable polyphenylene/CNT composite membrane for electrically enhanced membrane fouling mitigation

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Frontiers of Environmental Science & Engineering 2024年第1期18卷 35-47页

作者： Huijuan xie Haiguang Zhang Xu Wang Gaoliang Wei Shuo Chen xie Quan Key Laboratory of Industrial Ecology and Environmental Engineering(Ministry of Education) School of Environmental Science and TechnologyDalian University of TechnologyDalian 116024China

Nanocarbon-based conductive membranes, especially carbon nanotube (CNT)-based membranes, have tremendous potential for wastewater treatment and water purification because of their excellent water permeability and selectivity, as well as their electrochemically enhanced performance (e.g., improved antifouling ability). However, it remains challenging to prepare CNT membranes with high structural stability and high electrical conductivity. In this study, a highly electroconductive and structurally stable polyphenylene/CNT (PP/CNT) composite membrane was prepared by electropolymerizing biphenyl on a CNT hollow fiber membrane. The PP/CNT membrane showed 3.4 and 5.0 times higher electrical conductivity than pure CNT and poly(vinyl alcohol)/CNT (PVA/CNT) membranes, respectively. The structural stability of the membrane was superior to that of the pure CNT membrane and comparable to that of the PVA/CNT membrane. The membrane fouling was significantly alleviated under an electrical assistance of −2.0 V, with a flux loss of only 11.7% after 5 h filtration of humic acid, which is significantly lower than those of PP/CNT membranes without electro-assistance (56.8%) and commercial polyvinylidene fluoride (PVDF) membranes (64.1%). Additionally, the rejection of negatively charged pollutants (humic acid and sodium alginate) was improved by the enhanced electrostatic repulsion. After four consecutive filtration-cleaning cycle tests, the flux recovery rate after backwashing reached 97.2%, which was much higher than those of electricity-free PP/CNT membranes (67.0%) and commercial PVDF membranes (61.1%). This study offers insights into the preparation of stable conductive membranes for membrane fouling control in potential water treatment applications.

关键词： Polyphenylene CNTs Membrane Electro-assistance Membrane fouling mitigation

Extract lithium from clay-type lithium ore by mixed acid and its mechanism Author links open overlay panel

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Particuology 2024年第8期91卷 323-332页

作者： Wuchang Zhou Ruiqi xie Xiong Tong Xian xie Yang Liu Zhihui Zhao Faculty of Land Resource Engineering Kunming University of Science and TechnologyKunming650093China Technology Innovation Center for Comprehensive Utilization of Strategic Mineral Resources Ministry of Natural ResourcesChengdu610041China National&Regional Engineering Research Center for Green comprehensive Utilization of Tailing Resources from Metal Minerals Kunming650093China

A roasting-leaching test was carried out for the efficient utilization of clay-type lithium ore in the central region of Yunnan *** test used the mixed acid of sulfuric acid and phosphoric acid as the leaching *** the conditions of roasting temperature of 600℃,roasting time of 1 h,liquid-solid ratio of 5:1,volume ratio of H_(2)SO_(4)solution to H_(3)PO_(4)solution of 45:5,leaching time of 2 h and leaching temperature of 80℃,the leaching rate of lithium was as high as 97.83%.The leaching mechanism was studied by SEM,pore property analysis,XRD and *** was found that the morphology of the ore changed obviously after roasting and leaching,and a certain degree of collapse and fragmentation occurred,which provided favorable spatial conditions for the leaching of *** porosity,total intrusion volume and total pore area also increased after roasting and leaching,thus promoting the leaching of Li^(+).The results showed that chemical reaction taken placed during the roasting and *** phase of the sample changed from chlorite,kaolinite and diaspore(boehmite)mainly to corundum,hematite,periclase and quartz after ***,after leaching,no new phase was produced in the ore sample,and no S and P elements were found on the surface of the ore sample,indicating that the leaching mechanism of lithium might be the ion exchange between H^(+)and Li^(+).

关键词： Clay-type lithium ore Lithium extraction Roasting Leaching

全身麻醉复合硬膜外麻醉对胃癌根治术患者肺功能的影响研究

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中国社区医师 2021年第22期37卷 25-26页

作者：谢洪元山东省日照市莒县中医医院山东日照276500

目的:探讨全身麻醉复合硬膜外麻醉在胃癌根治术中的临床应用价值。方法:2018年1月-2020年2月收治实施胃癌根治术的患者57例,随机分为两组。研究组采用全身麻醉复合硬膜外麻醉;对照组实施全身麻醉。比较两组临床效果。结果:研究组术后3d... 详细信息

目的:探讨全身麻醉复合硬膜外麻醉在胃癌根治术中的临床应用价值。方法:2018年1月-2020年2月收治实施胃癌根治术的患者57例,随机分为两组。研究组采用全身麻醉复合硬膜外麻醉;对照组实施全身麻醉。比较两组临床效果。结果:研究组术后3d的MVV-ME/FEV1、MVV/FEV1水平均高于对照组,RV/TLC水平低于对照组,差异有统计学意义(P<0.05);研究组自主呼吸恢复时间、睁眼时间和拔管时间均低于对照组,差异有统计学意义(P<0.05);研究组肺部感染率低于对照组,差异有统计学意义(P<0.05)。结论:对胃癌根治术患者实施全身麻醉复合硬膜外麻醉,相对于单纯的全身麻醉,能够更好减轻麻醉对患者肺功能的影响,降低肺部感染率,为患者的术后康复打下坚实基础。

关键词：胃癌根治术全身麻醉硬膜外麻醉肺功能肺部感染

Game-theoretic multi-agent motion planning in a mixed environment

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Control Theory and Technology 2024年第3期22卷 379-393页

作者： Xiaoxue Zhang Lihua xie School of Electrical and Electronic Engineering Nanyang Technological UniversitySingapore City 639798Singapore

The motion planning problem for multi-agent systems becomes particularly challenging when humans or human-controlled robots are present in a mixed *** address this challenge,this paper presents an interaction-aware motion planning approach based on game theory in a receding-horizon manner Leveraging the framework provided by dynamic potential games for handling the interactions among agents,this approach formulates the multi-agent motion planning problem as a differential potential game,highlighting the effectiveness of constrained potential games in facilitating interactive motion planning among ***,online learning techniques are incorporated to dynamically learn the unknown preferences and models of humans or human-controlled robots through the analysis of observed *** evaluate the effectiveness of the proposed approach,numerical simulations are conducted,demonstrating its capability to generate interactive trajectories for all agents,including humans and human-controlled agents,operating within the mixed *** simulation results illustrate the effectiveness of the proposed approach in handling the complexities of multi-agent motion planning in real-world scenarios.

关键词： Motion planning Differential potential game Multi-agent systems Constrained potential game

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老年性溃疡患者临床与内镜特点分析

中国继续医学教育 2016年第17期8卷 87-88页

作者：解洪媛北大医疗鲁中医院消化内科山东淄博255400

目的分析老年性溃疡患者的临床特点和内镜特点。方法 2014年3月~2015年12月间本院收治的200例消化性溃疡患者进行入组研究,其中观察组（年龄〉60岁）和对照组（年龄〈60岁）,每组各100例患者,对两组患者的临床资料进行回顾性分析。结果... 详细信息

目的分析老年性溃疡患者的临床特点和内镜特点。方法 2014年3月~2015年12月间本院收治的200例消化性溃疡患者进行入组研究,其中观察组（年龄〉60岁）和对照组（年龄〈60岁）,每组各100例患者,对两组患者的临床资料进行回顾性分析。结果观察组中21%患者存在反酸嗳气症状,节律性或周期性上腹痛者占14%,与对照组（43%、58%）比较,差异有统计学意义,P〈0.05;观察组中癌变、幽门梗阻、穿孔、消化道出血分别占3%、6%、7%、27%,对照组分别为1%、3%、3%、9%,差异有统计学意义,P〈0.05。结论老年性溃疡患者具有较高的并发症发生率,临床症状不典型,对于怀疑消化性溃疡的患者应尽早进行胃镜检查,以尽早确诊并予以早期针对性治疗。

关键词：老年患者消化性溃疡临床特点内镜检查疾病症状

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辽宁杨木杆硼矿床地质地球化学特征

矿床地质 1998年第4期17卷 355-362页

作者：谢宏远冯本智邹日琚宜太中国科学院地质研究所长春科技大学地质系中国科学院广州地球化学研究所

杨木杆硼矿位于辽宁省宽甸县，产出于古元古代南辽河群下部里尔峪岩组中，为一中型硼镁石型硼矿。矿体走向ＳＥ，倾向ＮＥ，倾角７０°～８０°，直接赋矿岩石为蛇纹岩、蛇纹石化大理岩，矿体顶板出现有热水沉积的电英岩。硼矿石主要由... 详细信息

杨木杆硼矿位于辽宁省宽甸县，产出于古元古代南辽河群下部里尔峪岩组中，为一中型硼镁石型硼矿。矿体走向ＳＥ，倾向ＮＥ，倾角７０°～８０°，直接赋矿岩石为蛇纹岩、蛇纹石化大理岩，矿体顶板出现有热水沉积的电英岩。硼矿石主要由纤维硼镁石、板状硼镁石及蛇纹石、白云石等组成。常见的变余沉积及变质、交代等组构。硼矿石品位Ｂ２Ｏ３随ＭｇＯ含量增长先是稳步增长，然后在Ｂ２Ｏ３含量大于７％时，ＭｇＯ含量稳定在４５％～４８％范围内。矿石中富含Ｃｓ、Ｎｄ、Ｔａ、Ｓｎ、Ｃｄ等微量元素及Ｆ、ＣＨ４等挥发分，稀土总量从５．７３×１０－６～７０．９８×１０－６，具Ｅｕ负异常。δ１３Ｃ在－２．６‰～－１０．４‰，δ１１Ｂ在９．６‰～１１．１‰。杨木杆硼矿为受变质的与深源火山活动有关的热水沉积矿床，同时存在的蒸发气候条件提高了硼富集成矿的效率。

关键词：硼矿床地质地球化学古元古代硼矿石品位