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Prediction of Rolling Load in Hot Strip Mill byInnovations Feedback Neural Networks

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Journal of Iron and Steel Research International 2007年第2期14卷 42-45,51页

作者： zhang li zhang li-yong WANG Jun MA Fu-ting School of Electronic and Information Engineering Dalian University of Technology Dalian 116023 Liaoning China State Key Laboratory of Rolling an.d Automation Northeastern University Shenyang 110006 Liaoning China

Because the structure of the classical mathematical model of rolling load is simple, even with the self-adapting technology, it is difficult to accommodate the increasing dimensional accuracy. Motivated by this fact, an Innovations Feedback Neural Networks （IFNN） was presented based on the idea of Kalman prediction. The neural networks used the Back Propagation （BP） algorithm and applied it to the prediction of rolling load in hot strip mill. The theoretical results and the off-line simulation show that the prediction capability of IFNN is better than that of normal BP networks, namely, for the prediction of the rolling load in hot strip mill, the prediction precision of IFNN is higher than that of normal BP networks. Finally, a relative complete rolling load prediction system was developed on Windows 2003/XP platform using the OOP programming method and the SQL server2000 database. With this sys- tem, the rolling load of a 1700 strip mill was calculated, and the prediction results obtained correspond well with the field data. It shows that IFNN is valid for rolling load prediction.

关键词： rolling load prediction innovation neural network hot strip mill

Novel Synthetic Method for Triacetylbenzene

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Chinese Chemical Letters 2006年第9期17卷 1165-1168页

作者： Bin zhang yong GAO Jian li li Zhen SHI Department of Chemistry Northwest University Xi＇an 710069

Triacetylbenzene was prepared from tribenzimidazolium salt and Grignard reagent. The addition-hydrolysis reaction of tribenzimidazolium salt with Grignard reagent is reported and a novel method for preparation of tria... 详细信息

关键词： Triacetylbenzene tribenzimidazolium salt Grignard reagent synthesis.

NUMERICAL STUDY OF PERIODICAL FLOWS OF PIEZOELECTRIC VALVELESS MICROPUMP FOR BIOCHIPS

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Applied Mathematics and Mechanics(English Edition) 2005年第8期26卷 1026-1033页

作者： zhang yong-li（张永立） WU Jian-kang（吴健康） Mechanics Department Huazhong University of Science and Technology Wuhan 430074 P. R. China

Shallow water model was employed to approximate the three-dimensional flows of a thin micropump to a two-dimensional thickness-averaged flows. The finite element method and pressure correction algorithm were used to solve the two- dimensional flows of the pump and calculate the pump flow rate. The numerical results indicate that： 1 ） Phase differences in time of flow velocities and backflows occur across section of diffuser connecting to pump chamber; 2 ） A pair of symmetric vortexes appear inside the pump chamber at the end of suction flow phase; 3 ） The directional flow rate of the pump is dominated by nonlinearity of Navier-Stokes equations. Quantitative relations of the pump flow rate versus the ratio of diffuser length to width, the ratio of diffuser thickness to width, fluid viscosity and backpressure were also given. Possibly maximal flow rate can be achieved by optimizing the pump parameters.

关键词： micro-pump diffuser finite element method

Electrical bioimpedance gastric motility measurement based on an electrical-mechanical composite mechanism

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World Journal of Gastroenterology 2012年第25期18卷 3282-3287页

作者： Shu Zhao Hong Sha zhang-yong li, Chao-Shi Ren Institute of BiomedicalEngineering Chinese Academy of Medical Sciences and PekingUnion Medical College Tianjin 300192 China College of Bioinformation Chongqing Univer-sity of Posts and Telecommunications Chongqing 400065 China

AIM： To introduce a bioimpedance gastric motility mea- surement method based on an electrical-mechanical composite concept and a preliminary clinical application. METHODS： A noninvasive gastric motility measure- ment method combining electrogastrograrn （EGG） and impedance gastric motility （IGM） test was used. Prelim- inary clinical application studies of patients with func- tional dyspepsia （FD） and gastritis, as well as healthy controls, were carried out. Twenty-eight FD patients （mean age 40.9±9.7 years） and 40 healthy volun- teers （mean age 30.9±7.9 years） were involved. IGM spectrum was measured for both the healthy subjects and FD patients, and outcomes were compared in the FD patients before treatment and 1 wk and 3 wk after treatment. IGM parameters were obtained from 30 erosive gastritis patients （mean age 50.5±13.0 years） and 40 healthy adults, and IGM and EGG results were compared in the gastritis patients before treatment and 1 wk after ***： There were significant differences in the IGM parameters between the FD patients and healthy subjects, and FD patients had a poorer gastric motility [percentage of normal frequency （PNF） 70.8±25.5 in healthy subjects and 28.3 =t= 16.9 in FD patients, P 〈 0.01]. After 1 wk administration of domperidone 10 mg, tid, the gastric motility of FD patients was not im- proved, although the EGG of the patients had returned to normal. After 3 wk of treatment, the IGM rhythm of the FD patients became normal. There was a significant difference in IGM parameters between the two groups （PNF 70.4：1：25.5 for healthy subjects and 36.1 4- 21.8 for gastritis patients, P 〈 0.05）. The EGG rhythm of the gastritis patients returned to normal （frequency insta- bility coefficient 2.22±0.43 before treatment and 1.77 ：t： 0.19 one wk after treatment, P 〈 0.05） after 1 wk of treatment with sodium rabeprazole tablets, 10 mg, qd, po, qm, while some IGM parameters showed a tenden- cy toward improvement but had not reached statistical si

关键词： Gastric motility Electrical bioimpedance Electrical-mechanical composite Electrogastrogram

Research of novel complex optical network routing architecture

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The Journal of China Universities of Posts and Telecommunications 2010年第5期17卷 93-99页

作者： HAN Da-hai zhang Jie ZHAO yong-li ZHAO Shi-yu Key Laboratory of Information Photonics and Optical Communications Ministry of Education Beijing University of Posts & Telecommtmications Beijing 100876 China

This article puts forward a novel routing architecture for complex optical network,which core component is path calculation element （PCE）.As is well known,the PCE-based distributed path computation structure is making the routing control and computation loosely coupled from traditional control *** the study,the resource allocation and routing algorithm are the critical part of PCE *** compare the performance of new architecture and the traditional one,the user uses the flooding suppression,routing delay,resource utilization and traffic blocking probability as performance simulation parameters and taking the verification simulation on objective modular network testbed （OMNeT） platform against to source-node routing *** numerical analysis,computer simulation and experiment work indicate that the operation of PCE-based routing architecture can reduce the flooding information of path calculation request as well as the routing hops significantly and improve the quality of service （QoS） by decreasing the blocking probability when failure happened.

关键词： complex optical network PCE routing architecture

Repetitive DNA Sequences in Wheat and Its Relatives

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Agricultural Sciences in China 2001年第1期 5-13页

作者： zhang Xue-yong li Da-yong ICGR of Chinese Academy of Agricultural Sciences Key Laboratory of Crop Germplasm Resources & BiotechnologyMinistry of Agoriculture Beijing 100081 College of Life Science Beijing University Beiing 100871

Repetitive DNA sequences form a large portion of eukaryote genomes. Using wheat ( Triticum )as a model, the classification, features and functions of repetitive DNA sequences in the Tritieeae grass tribe is reviewed as well as the role of these sequences in genome differentiation, control and regulation of homologous chromosome synapsis and pairing. Transposable elements, as an important portion of dispersed repetitives,may play an essential role in gene mutation of the host. Dynamic models for change of copy number and sequences of the repetitive family are also presented after the models of Charlesworth et al. Application of repetitive DNA sequences in the study of evolution, chromosome fingerprinting and marker assisted gene transfer and breeding are described by taking wheat as an example.

关键词： Wheat Genome Repetitive DNA sequence Evolution Chromosome fingerprint Marker-assisted breeding

Gastric motility functional study based on electrical bioimpedance measurements and simultaneous electrogastrography

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2011年第12期12卷 983-989页

作者： zhang-yong li Chao-shi REN Shu ZHAO Hong SHA Juan DENG College of Bioinformation Chongqing University of Posts and Telecommunications Chongqing 400065 China nstitute of Biomedical Engineering Chinese Academy of Medical Sciences ＆ Peking Union Medical College Tianjin 300192 China

For some time now,the research on gastric motility and function has fallen behind in the amount of research on gastric endocrine,exocrine secretion,and gastric *** this paper,a noninvasive method to study gastric motility was developed,taking bioimpedance measurements over the gastric area simultaneously with the electrogastrography(EGG).This is based on the concept of observing and analyzing simultaneously the intrinsic electrical gastric activity(basic electric rhythm) and the mechanical gastric ***,preliminary clinical studies of healthy subjects and subjects with functional dyspepsia(FD) and gastritis were carried *** impedance gastric motility(IGM) measurements of the healthy and FD subjects were compared,along with the studies of the FD subjects before treatment and after one week and three weeks of *** also compared IGM measurements of healthy subjects and subjects with erosive gastritis,along with the studies of the subjects with erosive gastritis before treatment and after one week of *** show that FD subjects have poor gastric motility(Plity of FD subjects was not yet improved although the EGG had returned to normal by this *** three weeks of treatment,the regular IGM rhythm returned in FD *** was a significant difference of IGM parameters between the gastritis and healthy subjects(P0.05),These results suggest the possibility of clinic application of the proposed method.

关键词： Gastric motility Electrical bioimpedance Electrogastrography Functional dyspepsia Gastritis

Characteristics of Disorder and Defect in Hydrogenated Amorphous Silicon Nitride Thin Films Containing Silicon Nanograins

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Chinese Journal of Aeronautics 2006年第B12期19卷 173-178页

作者： DING Wen-ge YU Wei zhang Jiang-yong HAN li FU Guang-sheng College of Physics Science and Technology Hebei University Baoding 071002 China

The hydrogenated amorphous silicon nitride （SiNx） thin films embedded with nano-structural silicon were prepared and the micro- structures at the interface of silicon nano-grains/SiNx were identified by the optical absorption and Raman scattering measurements. Characterized by the exponential tail of optical absorption and the band-width of the Raman scattering TO mode, the disorder in the interface region increases with the gas flow ratio increasing. Besides, as reflected by the sub-gap absorption coefficients, the density of interface defect states decreases, which can be attributed to the structural mismatch in the interface region and also the changes of hydrogen content in the deposited films. Additional annealing treatment results in a significant increase of defects and degree of disorder, for which the hydrogen out-diffusion in the annealing process would be responsible.

关键词： silicon nanostructures disorder and defect role of hydrogen

A new phenanthraquinone from the roots of Peucedanum praeruptorum

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Chinese Chemical Letters 2010年第7期21卷 816-817页

作者： Cun zhang li li yong Qing Xiao Wen li Xiao Jie Yin Guo Fang Tian Dong Dong Chen Yun Wang Institute of Chinese Materia Madica China Academy of Traditional Chinese MedicineBeijing 100700China

A new compound,9,10-dihydrophenanthrinic acid,9,10-dione-3,4-methylenedioxy-8-methoxy（1） was isolated from the roots of Peucedanum praeruptorum Dunn on the basis of spectral evidences.

关键词： Peucedanum praeruptorum 9 10-Phenanthraquinone 9 10-Dihydrophenanthrinic acid 9 10-Dione-3 4-methylenedioxy-8-methoxy