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A study on relationship of nitric oxide,oxidation,peroxidation,lipoperoxidation with chronic cholecystitis

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World Journal of Gastroenterology 2000年第4期6卷 501-507页

作者： jun fu Zhou Dong Cai You Gen Zhu Jin Lu Yang Cheng Hong peng Yang Hai Yu The Second Affiliated Hospital of Medical College of Zhejiang University Hangzhou 310009ZhejiangChina The People’s Hospital of Jinhua City Jinhua 321000ZhejiangChina

AIM:To study relationship of injury induced by nitric oxide, oxidation, peroxidation,lipoperoxidation with chronic ***:The values of plasma nitric oxide (P-NO), plasma vitamin C (P-VC), plasma vitamin E (P-VE), plasma beta-carotene (P-beta-CAR), plasma lipoperoxides (P-LPO), erythrocyte superoxide dismutase (E-SOD), erythrocyte catalase (E-CAT), erythrocyte glutathione peroxidase (E-GSH-Px) activities and erythrocyte lipoperoxides (E-LPO) level in 77 patients with chronic cholecystitis and 80 healthy control subjects were determined, differences of the above average values between the patient group and the control group and differences of the average values between preoperative and postoperative patients were analyzed and compared, linear regression and correlation of the disease course with the above determination values as well as the stepwise regression and correlation of the course with the values were ***:Compared with the control group, the average values of P-NO, P-LPO, E-LPO were significantly increased (P<0.01), and of P-VC, P-VE, P-beta-CAR, E-SOD, E-CAT and E-GSH-Px decreased (P <0.01) in the patient group. The analysis of the linear regression and correlation showed that with prolonging of the course, the values of P-NO, P-LPO and E-LPO in the patients were gradually ascended and the values of P-VC,P-VE, P-beta-CAR, E-SOD, E-CAT and E-GSH-Px descended (P<0.01). The analysis of the stepwise regression and correlation indicated that the correlation of the course with P-NO, P-VE and P-beta-CAR values was the closest. Compared with the preoperative patients, the average values of P-NO, P-LPO and E-LPO were significantly decreased (P <0.01) and the average values of P-VC, E-SOD, E-CAT and E-GSH-Px in postoperative patients increased (P <0.01) in postoperative patients. But there was no significant difference in the average values of P-VE, P-beta-CAR preoperative and postoperative ***:Chronic cholec

关键词： nitric oxide oxidation peroxidation lipoperoxidation chronic cholecystitis

Active disturbance rejection control for hydraulic width control system for rough mill

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2007年第9期8卷 1429-1434页

作者： ZOU jun fu Xin YANG Hua-yong Institute State Key Laboratoty of Fhtid Power Transmission and Control. Zhejiang University Hangzhou 310027 China

The highly nonlinear behavior of the system limits the performance of classical linear proportional and integral （PI） controllers used for hot rolling. An active disturbance rejection controller is proposed in this paper to deal with the nonlinear problem of hydraulic servo system in order to preserve last response and small overshoot of control system. The active disturbance rejection （ADR） controller is composed of nonlinear tracking differentiator （TD）, extended state observer （ESO） and nonlinear feedback （NF） law. An example of the hydraulic edger system case study is investigated to show the effectiveness and robustness of the proposed nonlinear controller, especially, in the circumstance of foreign disturbance and working condition variation, compared with classic PI controller.

关键词： Active disturbance rejection (ADR) Hydraulic servo system Width control Rough mill

Post-silking nitrogen accumulation and remobilization are associated with green leaf persistence and plant density in maize

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Journal of Integrative Agriculture 2019年第8期18卷 1882-1892页

作者： ZHANG Li-li ZHOU Xiang-li FAN Ye fu jun HOU peng YANG Hai-long QI Hua Agronomy College Shenyang Agricultural University Shenyang 110866 P.R.China Dandong Academy of Agricultural Sciences Fengcheng 118109 P.R.China College of Life Sciences Northwest A&F University Yangling 712100 P.R.China Institute of Crop Sciences Chinese Academy of Agricultural Sciences Beijing 100081 P.R.China

Stay green(SG) maize was found to have higher grain yield and post-silking nitrogen(N) uptake(PostN) compared with a non-stay green(NSG) hybrid. To understand the effects of plant density on grain yield(GY) and N efficiency in modern maize hybrids, we compared two modern hybrids(SG hybrid DY508 and NSG hybrid NH101) with similar maturity ratings at three plant densities(45 000, 60 000, and 75 000 pl ha^–1) in 2014 and 2015. GY, leaf senescence, dry matter(DM) accumulation,N accumulation, PostN, and post-silking N remobilization(RemN) were analyzed. DY508 and NH101 had similar GY, but DY508 had higher thousand kernel weight(TKW) and lower kernel number(KN) than NH101. Plant density significantly increased GY in the two hybrids. On average, over the two years, plant density improved GY in DY508 and NH101 by 18.5 and 11.1%, respectively, but there were no differences in total dry matter(TDM) and post-silking DM(PostDM) between the two hybrids. Plant density improved leaf N, stem N, and grain N at the silking and maturity stages in 2014 and 2015. DY508 was lower in harvest index(HI), nitrogen harvest index(NHI), and grain N concentration(GNC) than NH101. Grain N in DY508 was 2.61 kg ha^–1 less than in NH101, and this was caused by lower GNC and leaf RemN. On the average, DY508 was 1.62 kg ha^–1 less in leaf remobilized N(leaf RemN) than NH101, but was similar in stem remobilized N(stem RemN;2.47 kg ha^–1 vs. 3.41 kg ha^–1). Maize hybrid DY508 shows delayed leaf senescence in the upper and bottom canopy layers in the later stages of growth. The present study provides evidence that the NH101, which has rapid leaf senescence at the late grain-filling stage, has gained equivalent GY and higher leaf RemN, and was more efficient in N utilization.

关键词： maize N remobilization post-silking N uptake stay green plant density

Synthesis and thermoelectric properties of Rashba semiconductor BiTeBr with intensive texture

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Rare Metals 2018年第4期37卷 274-281页

作者： Jia-Zhan Xin Chen-Guang fu Wu-jun Shi Guo-Wei Li Gudrun Auffermann Yan-peng Qi Tie-jun Zhu Xin-Bing Zhao Claudia Felser Max Planck Institute for Chemical Physics of Solids 01187 Dresden Germany State Key Laboratory of Silicon Materials School of Materials Science and Engineering Zhejiang UniversityHangzhou 310027 China School of Physical Science and Technology ShanghaiTech University Shanghai 200031 China

Bismuth tellurohalides with Rashba-type spin splitting exhibit unique Fermi surface topology and are developed as promising thermoelectric materials. However, BiTeBr, which belongs to this class of materials, is rarely investigated in terms of the thermoelectric transport properties. In the study, polycrystalline bulk BiTeBr with intensive texture was synthesized via spark plasma sintering （SPS）. Additionally, its thermoelectric properties above room temperature were investigated along both the inplane and out-plane directions, and they exhibit strong anisotropy. Low sound velocity along two directions is found and contributes to its low lattice thermal conductivity. Polycrystalline BiTeBr exhibits relatively good thermoelectric performance along the in-plane direction, with a maximum dimensionless figure of merit （ZT） of 0.35 at 560 K. further enhancements of ZT are expected by utilizing systematic optimization strategies.

关键词： Bismuth tellurohalides BiTeBr Thermoelectric properties Texture

Application of Adaptive fuzzy Spiking Neural P Systems in Fault Diagnosis of Power Systems

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Chinese Journal of Electronics 2014年第1期23卷 87-92页

作者： TU Min WANG jun peng Hong SHI peng School of Electrical and Information Engineering Xihua University Center for Radio Administration and Technology Development Xihua University Department of Computing and Mathematical Sciences University of Glamorgan PontypriddCF37 1DL UK School of Engineering and Science Victoria University MelbourneVic 8001 Australia

Adaptive fuzzy spiking neural P systems(AFSN P systems) are a novel kind of computing models with parallel computing and learning ability. Based on our existing works, AFSN P systems are applied to deal with the fault diagnosis problems of power systems and the uncertainty of action messages about protective relays and breakers, and a new fault diagnosis model of power systems is proposed with simple reasoning process and fast speed with parallel processing capabilities. The effectiveness of the fault diagnosis model is verified by some examples of fault diagnosis. furthermore, the learning ability of AFSN P systems can be applied to adjust the weights in the fault diagnosis model automatically.

关键词： Membrane computing Spiking neural P systems Fault diagnosis Power systems

Expression Profiling of Cassava Storage Roots Reveals an Active Process of Glycolysis/Gluconeogenesis

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Journal of Integrative Plant Biology 2011年第3期53卷 193-211页

作者： jun Yang Dong An peng Zhang Shanghai Center for Cassava Biotechnology National Laboratory of Plant Molecular Genetics Institute of Plant Physiology & Ecology Shanghai Institutes for Biological Sciences the Chinese Academy of Sciences Shanghai 200032 China Key Laboratory of Synthetic Biology Institute of Plant Physiology & Ecology Shanghai Institutes for Biological Sciences the Chinese Academy of Sciences Shanghai 200032 China Shanghai Chenshan Plant Science Research Center the Chinese Academy of Sciences Chenshan Botanical Garden Shanghai 201602 China

Mechanisms related to the development of cassava storage roots and starch accumulation remain largely unknown. To evaluate genome-wide expression patterns during tuberization, a 60 mer oligonucleotide microarray representing 20 840 cassawl genes was designed to identify differentially expressed transcripts in fibrous roots, developing storage roots and mature storage roots. Using a random variance model and the traditional twofold change method for statistical analysis, 912 and 3 386 upregulated and downregulated genes related to the three developmental phases were identified. Among 25 significantly changed pathways identified, glycolysis/gluconeogenesis was the most evident one. Rate-limiting enzymes were identified from each individual pathway, for example, enolase, L-lactate dehydrogenase and aldehyde dehydrogenase for glycolysis/gluconeogenesis, and ADP-glucose pyrophosphorylase, starch branching enzyme and glucan phosphorylase for sucrose and starch metabolism. This study revealed that dynamic changes in at least 16% of the total transcripts, including transcription fac- tors, oxidoreductases/transferases/hydrolases, hormone-related genes, and effectors of homeostasis. The reliability of these differentially expressed genes was verified by quantitative real-time reverse transcription-polymerase chain reaction. Tlhese studies should facilitate our understanding of the storage root formation and cassava improvement.

关键词： CASSAVA ROOTS (Botany) -- Formation GLYCOLYSIS GLUCONEOGENESIS LACTATE dehydrogenase REVERSE transcriptase polymerase chain reaction PLANT gene expression OLIGONUCLEOTIDE arrays

Spin-orbit coupling in Bose-Einstein condensate and degenerate Fermi gases

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Frontiers of physics 2014年第5期9卷 598-612页

作者： peng-jun Wang Jing Zhang State Key Laboratory of Quantum Optics and Quantum Optics Devices Institute of Opto-Electronics Shanxi University Taiyuan 030006 China

We review our recent experimental realization and investigation of a spin orbit （SO） coupled Bose Einstein condensate （BEC） and quantum degenerate Fermi gas. By using two counter-propagathlg Ranlan lasers and controlling the different frequency of two R,aman lasers to engineer the atom light interaction, we first study the SO coupling in BEC. Then we study SO coupling in Fermi gas. We, observe the spin dephasing in spin dynamics and momentum distribution asymmetry of the equilibrium state as halhnarks of SO coupling in a Fermi gas. To clearly reveal the, property of SO coupling Fermi gas, we also study the momentmn-resolved radio-frequency spectroscopy which characterizes the energy momentum dispersion and spin composition of the quantum states. We observe the change of errmion surfaces in different helieity branches with different atomic density, which indicates that a Lifshitz transition of the Fermi surface topology change can be found by further cooling the system. At last, we study the momentum-resolved Raman spectroscopy of an ultracoht Fermi gas.

关键词： spin-orbit coupling Bose Einstein condensate Fermi gases topological change momentum-resolved radio-frequency spectroscopy momentum-resolved Raman spectroscopy

Neural learning control for discrete-time nonlinear systems in pure-feedback form

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Science China(Information Sciences) 2022年第2期65卷 124-138页

作者： Min WANG Haotian SHI Cong WANG jun fu School of Automation Science and Engineering South China University of Technology State Key Laboratory of Synthetical Automation for Process Industries Northeastern University School of Control Science and Engineering Shandong University

This study focuses on state-feedback and output-feedback neural learning control problems for discrete-time nonlinear systems in the pure-feedback form. First, an extended result for the exponential stability for a class of discrete-time linear time-varying(LTV) systems with n-step delays is proposed to verify the exponential convergence of estimated weights. Subsequently, both state-feedback and outputfeedback adaptive neural network(NN) controllers are constructed by combining the classical n-step and n-step input-output predictors. After ensuring convergence of the system output to a recurrent reference signal, the radial basis function subvector of NN is verified to satisfy the persistent exciting condition using the system state equation and the implicit function theorem. By combining the extended stability corollary of an LTV system, the estimated weights are verified to exponentially converge to their optimal values. By constructing "learning rules" and using a "mod" function, the estimated weights with a convergent sequence are synthetically represented and stored as the experience knowledge, which is reused to construct neural learning controllers. The proposed neural learning controllers not only accomplish similar control tasks but also reduce the burden of online computation compared with the conventional adaptive NN ***, simulation results are presented to demonstrate the effectiveness of the presented schemes.

关键词： discrete-time nonlinear systems pure-feedback systems learning control neural networks persistent excitation

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Research Progress on Solar Flare Forecast Methods Based on Data-driven Models

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Research in Astronomy and Astrophysics 2023年第6期23卷 12-27页

作者： Ke Han Meng-Yao Yu jun-Feng fu Wen-Bin Ling De-quan Zheng Jie Wan peng E School of Computer and Information Engineering Heilongjiang Provincial Key Laboratory of Electronic Commerce and Information ProcessingHarbin University of CommerceHarbin 150028China Laboratory for Space Environment and Physical Sciences Harbin Institute of TechnologyHarbin 150001China

Eruption of solar flares is a complex nonlinear process,and the rays and high-energy particles generated by such an eruption are detrimental to the reliability of space-based or ground-based *** far,there are not reliable physical models to accurately account for the flare outburst mechanism,but a lot of data-driven models have been built to study a solar flare and forecast *** the paper,the status of solar-flare forecasting is reviewed,with emphasis on the machine learning methods and data-processing techniques used in the *** first,the essential forecast factors strongly relevant to solar flare outbursts,such as classification information of the sunspots and evolution pattern of the magnetic field,are reviewed and ***,methods of resampling for data preprocessing are introduced to solve the problems of class imbalance in the solar flare ***,typical model structures adopted for flare forecasting are reviewed from the aspects of the single and fusion models,and the forecast performances of the different models are ***,we herein summarize the current research on solar flare forecasting and outline its development trends.

关键词： Sun:activity Sun:flares (Sun:)sunspots Sun:magnetic fields