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Science China(Information Sciences) 2022年第11期65卷 196-216页

作者： gui-hua zhao Shu-Jun LIU College of Science University of Shanghai for Science and Technology College of Mathematics Sichuan University

In this study, we investigate the stochastic finite-time stability theory and finite-time stabilization of stochastic time-varying nonlinear systems with Markovian switching in the sense of weak solutions. First,we present the stochastic finite-time stability theory under the framework of weak solutions: the existence of weak solutions and stochastic finite-time stability theorems for stochastic time-varying nonlinear systems with Markovian switching. Second, for a class of high-order stochastic nonlinear systems with Markovian switching, a finite-time stabilization controller is constructively designed, and the trivial weak solution of a closed-loop system is proven to be globally finite-time stable in probability. The effectiveness of the proposed finite-time control method is illustrated by a numerical example.

关键词： stochastic time-varying nonlinear systems Markovian switching weak solutions stochastic finite-time stability finite-time control

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Growth factors induce the improved cardiac remodeling in autologous mesenchymal stem cell-implanted failing rat hearts

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2010年第4期11卷 238-248页

作者： Ze-wei TAO Long-gui LI zhao-hua GENG Tao DANG Shan-jun ZHU Department of Cardiovascular Diseases Xinqiao Hospital Third Military Medical University Chongqing 40003 7 China

Therapeutically delivered mesenchymal stem cells (MSCs) improve ventricular remodeling. However,the mechanism underlying MSC cardiac remodeling has not been clearly determined. Congestive heart failure (CHF) was induced in rats by cauterization of the left ventricular free wall. MSCs were cultured from autologous bone marrow and injected into the border zone and the remote myocardium 5 d after injury. Ten weeks later,when compared with sham operation,CHF significantly increased nucleus mitotic index,capillary density,and expression of insulin-like growth factor 1,hepatocyte growth factor and vascular endothelial growth factor in the border zone (P<0.01) and decreased each of them in the remote myocardium (P<0.05 or P<0.01). MSC implantation in CHF dramatically elevated ex-pression of these growth factors in the remote myocardium and further elevated their expression in the border zone when compared with CHF without MSC addition (P<0.05 or P<0.01). This was paralleled by a higher nucleus mitotic index and a significantly increased capillary density both in the remote myocardium and in the border zone,and by a lower percentage of area of collagen and a higher percentage of area of myocardium in the border zone (P<0.05 or P<0.01),and cardiac remodeling markedly improved. Autologous MSC implantation promoted expression of growth factors in rat failing myocardium,which might enhance cardiomyogenesis and angiogenesis,and improved cardiac remodeling.

关键词： Mesenchymal stem cells Growth factor Myocardium Cardiac remodeling

Rapidly counting atomic planes of ultra-thin MoSe2 nanosheets(1≤n≤4)on SiO2/Si substrate

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Rare Metals 2016年第8期35卷 632-636页

作者： Yi-Ping Wang Hui-Jun Zhou gui-hua zhao Tian-Long Xia Lei Wang Le Wang Li-Yuan Zhang Department of Physics Renmin University of ChinaBeijing 100872China Beijing Key Laboratory of Opto-electronic Functional Materialsand Micro-nano Devices Renmin University of China Department of Power and Electrical Engineering Northwest A&F UniversityYangling 712100ShaanxiChina

The optical, thermal and electrical properties of ultra-thin two-dimensional （2D） crystal materials are highly related to their thickness. Therefore, identifying the atomic planes of few-layer crystal materials rapidly is crucial to fundamental study. Here, a simple technique was demonstrated based on optical contrast for counting atomic planes （n） of few-layer MoSe2 on SiO2/Si substrates. It is found that the optical contrast of single-layer MoSe2 depends on light wavelength and thickness of SiO2 on Si substrate. The data calculated based on a Fresnel law-based model as well as atomic force microscopy （AFM） mea- surements fit well with the values measured by spectro- scopic ellipsometer. Furthermore, the calculated and measured contrasts were integral and plotted, which can be used to determine the MoSe2 atomic planes （1 ≤ n ≤ 4） accurately and rapidly.

关键词： Thickness identification Optical contrast MoSe2 Optical microscopy

Stochastic input-to-state stability of stochastic nonlinear systems with Markovain switching

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Stochastic input-to-state stability of stochastic nonlinear ...

第三十九届中国控制会议

作者： gui-hua zhao College of Science University of Shanghai for Science and Technology Department of Mathematics Jiangsu University of Science and Technology

The stochastic input-to-state stability（SISS） of stochastic nonlinear systems with Markovian switching（SNSwMS）is studied in this paper. Firstly, the notion of SISS for SNSwMS is introduced. And then SISS for SNSwMS is studied. Finally,by the method of changing the supply functions, the stability of cascaded stochastic input-to-state stable stochastic nonlinear subsystems with Markovian switching is investigated.

关键词： Stochastic Input-to-state Stability Stochastic Nonlinear Systems with Markovian Switching Cascaded Stochastic Input-to-state Stable Subsystems

Adaptive Finite-time Stabilization of Weak Solutions for a Class of Stochastic Nonlinear Systems with Parametric Uncertainty

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Adaptive Finite-time Stabilization of Weak Solutions for a C...

第37届中国控制会议

作者： gui-hua zhao Shu-Jun Liu College of Mathematics Southeast University Department of Mathematics Jiangsu University of Science and Technology College of Mathematics Sichuan University

In this paper,the finite-time stabilization for a class of stochastic nonlinear systems with parametric uncertainty is studied under the framework of weak solutions.A Lyapunov function is constructed by the method of adding a power integrator and a finite-time controller is constructively *** is proved that the closed-loop system has a global weak solution,states and control input of the closed-loop system reach the origin in a finite time and the parameter estimate is bounded with probability ***,a numerical simulation is given to illustrate the efficiency of the proposed design procedure.

关键词： Weak Solution Adaptive Control Finite-time Stability in Probability Stochastic Nonlinear Systems

Primary culture of cat intestinal epithelial cells in vitro and the cDNA library construction

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Primary culture of cat intestinal epithelial cells in vitro ...

2021中国畜牧兽医学会兽医寄生虫学分会第16次学术研讨会

作者： gui hua zhao Ye Liu Yun tang Cheng Qing song zhao Xiao Qiu Chao Xu Ting Xiao Song Zhu Gong zhen Liu Kun Yin

Objective To lay a foundation for screening the ***-felids interaction factors,we have developed a reproducible primary culture method for cat intestinal epithelial cells(IECs).Methods The primary IECs were isolated from a new born cat's small intestine jejunum region without food ingress,and respectively in vitro cultured by tissue cultivation and combined digestion method with collagenase XI and dispase I,then purified by *** identification,the ds cDNA of cat IECs was synthesized for constructing pGADT7 homogenization three-frame plasmid,and transformed into the yeast Y187 for generating the cDNA *** Our results indicated that cultivation of primary cat IECs relays on combined digestion to form polarized and confluent monolayers within 3 days with typical features of normal epithelial *** purified cells cultured by digestion method were identified to be nature intestinal epithelial cells using immunohistochemical analysis and were able to maintain viability for at least 15 *** homogenizable ds cDNA,which is synthesized from the total RNA extracted from our cultured IECs,distributed among 0.5-2.0 kb,and generated satisfying three-frame cDNA library with the capacity of 1.2 × 10～6 and the titer of 5.2 × 10～7 pfu/*** Our results established an optimal method for the culturing and passage of cat IECs model in vitro,and laid a cDNA library foundation for the subsequent interaction factors screening by yeast two-hybrid.

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Machine Vision Based Flotation Froth Mobility Analysis

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Machine Vision Based Flotation Froth Mobility Analysis

第二十九届中国控制会议

作者： MU Xue-Min,Liu Jin-Ping,gui Wei-hua,TANG zhao-Hui,YANG Chun-hua,LI Jian-Qi School of Information Science&Engineering,Central South University,Changsha 410083,P.R.China

In a typical flotation cell circuit,the optimum cell performance depends largely on the ability of the operators to monitor and control the speed at which the froth crosses the lip of each ***,the froth flowrate is an essential tuning variable for flotation optimal monitoring and control system based on machine ***,the froth velocity is difficult to be measured accurately by traditional motion estimation algorithms in digital image processing,since the forth bubbles are stirred by the paddle of the flotation machine,which makes the bubbles lead to inevitable deformations such as rotation,scaling,bursting,coalescence and ***（Scaling Invariant Feature Transform）is a robust local descriptor,invariant to geometric *** advantage of the SIFT,the froth velocity field reporting to the cell lip is measured precisely by the displacement estimation of the feature points with SIFT feature registration in the successive *** relation between the froth flowrate and flotation production performance indexes is discussed after the froth velocity field has been extracted,in order to accumulate the operation knowledge based on the judgment of froth surface visual *** results executed in industrial case demonstrate that this method can extract the froth velocity field precisely and it is insensitive to bubble *** method to froth velocity extraction and the operation knowledge accumulated provide guidance for the automatic control in flotation operation and lay a foundation for the establishment of a flotation optimal automatic control system based on machine vision.

关键词： Froth Flotation Froth Images Motion Estimation Scale Invariant Feature Transform On-line Monitoring

Rapid and scalable preparation of highly quaternized polymer networks to achieve efficient simultaneous adsorption of iodide and pertechnetate

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Science China Chemistry 2025年第01期 337-349页

作者： Meiyun Xu Song Gu Fulong Chen Zhe zhao Peng Liu Daoben hua State Key Laboratory of Radiation Medicine and Protection School of Radiological and Interdisciplinary Sciences (RAD-X) Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions Soochow University

The efficient separation of fission products,such as TcO4-and I-,holds strategic significance for the management of radioactive wastes and environmental *** this study,we propose an ultrafast strategy for scalable preparation of a highly quaternized organic network to facilitate efficient and synchronous separation of iodide and *** network can be prepared within a few minutes at room temperature,using polyethylenimine and 1,2,4,5-tetrakis（bromomethyl）benzene as building *** chlorine replacement,the network,abundantly decorated with quaternary ammonium groups （Cl@QPN）,exhibits an ultrahigh positive charge density of 7.6 mmol/*** enables the rapid and efficient enrichment of target anions through strong electrostatic Coulomb *** a result,Cl@QPN exhibits significantly higher adsorption rate constants of 0.830 g/（mg min） for ReO4-（a nonradioactive surrogate of TcO4-） and 0.677 g/（mg min） for I-compared to other ***,it possesses high adsorption capacities,reaching 1,681 mg/g for ReO4-and 917.4 mg/g for I-.Cl@QPN also demonstrates good selectivity towards target ions and shows efficient adsorption for99TcO4-.Additionally,Cl@QPN exhibits high dynamic processing capacities,handling up to 3,100 and 7,400 kg of simulated streams per kilogram of material for I-and ReO4-,respectively.

关键词：

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饮酒促进TA2小鼠乳腺癌的发生及机制探讨

中国实验动物学报 2017年第5期25卷 563-566页

作者：徐陌陈志军桂照华陈丹蕾赵浩东杨帆汪思应安徽医科大学病理学与病理生理学教研室合肥230032 重庆市云阳县人民医院重庆4045000

目的探讨酒精是否促进小鼠乳腺癌的发生及可能的作用机制。方法建立饮酒TA2小鼠模型,用ANALOX AM1酒精分析仪检测TA2小鼠血液的酒精浓度,确保动物模型的建立;观察比较酒精组TA2小鼠(饮用含2%酒精的无菌水)与对照组TA2小鼠(饮用不含酒精... 详细信息

目的探讨酒精是否促进小鼠乳腺癌的发生及可能的作用机制。方法建立饮酒TA2小鼠模型,用ANALOX AM1酒精分析仪检测TA2小鼠血液的酒精浓度,确保动物模型的建立;观察比较酒精组TA2小鼠(饮用含2%酒精的无菌水)与对照组TA2小鼠(饮用不含酒精的无菌水)的乳腺癌发生率、肿瘤的生长速度以及肿瘤的大小;酶联免疫法(ELASA)检测两组小鼠血清中雌激素水平的差异。结果饮酒组TA2小鼠自发乳腺癌的比例显著增加(P0.05)。饮酒组TA2小鼠体内的雌激素水平明显升高(P<0.05)。结论酒精促进TA2小鼠乳腺癌的发生,该作用可能通过雌激素水平的增加来实现。

关键词：酒精 TA2小鼠乳腺癌雌激素

联合免疫组化检测不同类型的输卵管浆液性上皮病变的发生情况

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标记免疫分析与临床 2018年第9期25卷 1322-1325,1330页

作者：桂照华吴景程修强何杰安徽省肿瘤医院病理科安徽合肥230031

目的观察卵巢浆液性肿瘤中输卵管上皮的病理形态学改变.初步探讨输卵管上皮病变与卵巢浆液性癌发生的关系。方法对卵巢39例高级别浆液性癌、7例低级别浆液性癌、10例交界性浆液性肿瘤的输卵管按照广泛逐层切取检查法取材和切片,并用全... 详细信息

目的观察卵巢浆液性肿瘤中输卵管上皮的病理形态学改变.初步探讨输卵管上皮病变与卵巢浆液性癌发生的关系。方法对卵巢39例高级别浆液性癌、7例低级别浆液性癌、10例交界性浆液性肿瘤的输卵管按照广泛逐层切取检查法取材和切片,并用全自动免疫组化仪检测P53表达,观察输卵管上皮P53印记细胞、浆液性上皮内癌和浸润性浆液性癌的发生情况。结果 P53印记和STIC仅出现在卵巢高级别浆液性癌组,其发生率分别为33. 3%和10. 3%;SIC在卵巢高级别浆液性癌的发生率(64.1%)显著高于低级别浆液性癌(25.0%)(P><0.05)。13例存在P53印记的病例中,共计发现20个病灶,位于输卵管伞端15个,位于壶腹部5个;4例出现STIC的病例中共计发现6个病灶,均位于伞端。HGSC组输卵管上皮内癌和浸润性癌P53均呈强阳性或阴性表达,而LGSC组浸润性呈弱阳性表达。结论输卵管上皮浆液性病变与卵巢高级别浆液性癌的发生有一定关系,P53免疫组织化学染色对于识别这些输卵管病变有帮助。

关键词： P53印记细胞卵巢浆液性肿瘤输卵管上皮病变免疫组织化学