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Image Processing and Parameters Measurement of Internal Taper Thread Based on Industrial CT Technology

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Image Processing and Parameters Measurement of Internal Tape...

第三届国际仪器科学技术学术研讨会

作者： LIU Qing-min WANG Long-shan CHEN Xiang-wei CUI Zhi college of Mechanical science and engineering Jilin University Changchun 130025 China

In order to perform non-damage detection and parameters measurement on internal taper thread of electrode in one system, a new non-contact measurement method based on industrial CT technique is put fo

关键词： industrial CT image processing measurement internal taper thread error

Preparation and Characterization of Chitosan/Carboxymethylated Konjac Glucomannan Blend Films

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Wuhan University Journal of Natural sciences 2002年第1期7卷 107-112页

作者： Zheng Hua 1 , Du Yu-min 2 1. Department of Chemical engineering, Wuhan University of Technology, Wuhan 430070, Hubei, China 2. college of Chemistry and Molecular sciences, Wuhan University, Wuhan 430072, Hubei, China Wuhan University of Technology Department of Chemical Engineering Wuhan Hubei China (GRID:grid.162110.5) (ISNI:***) Wuhan University College of Chemistry and Molecular Sciences Wuhan Hubei China (GRID:grid.49470.3e) (ISNI:***)

In order to improve the mechanical and water swelling properties of the chitosan (CS) film, a series of transparent films were prepared by blending 2%(weight) chitosan acetic acid solution with 1.5%(weight) carboxymethylated konjac glucomannan (CMKGM) aqueous solution according to predetermined ratio and drying at 30°C. The morphological structure, miscibility, thermal stability, mechanical properies, and swelling capacity of the blend films were studied by infrared (IR), X-ray diffraction (XRD), differential thermal analysis (DTA), scanning electron micrograph (SEM), and measurements of the mechanical properties and swelling properties. The results demonstrated that there was strong interaction and good miscibility between CS and CMKGM resulted from intermolecular hydrogen bonding and electrostatic force. The mechanical properties in dry state and wet state, thermostability, and water swelling properties of the blend films were obviously improved. The best values of the tensile strength in the dry and wet state achieved 89 MPa and 49 MPa, respectively, when the CMKGM content was 30%(weight). The CS/ CMKGM blend films provided promising biomedical applications.

关键词： Key words chitosan carboxymethylated konjac glucomannan blend films structure characterization

The Study of Plasma Etching Processing Based on OES

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The Study of Plasma Etching Processing Based on OES

第二届国际测量仪器与测试自动化学术会议

作者： Sun Jianghong Xu Xiaoli (School of ElectroMechanical engineering Beijing Information science & Technology University Beijing 100192 China) Wang Wei (college of Electroning engineering Chongqing University of Posts and Telecommun-ications Chongqing 400065 China)

＜正＞Optical emission spectroscopy（OES）diagnostics is a key technique for high density plasma *** can be used as a real-time sensor to qualify and predict the etching performance in an integrated circuit manufacturing *** on our developed ICP high density plasma etching reactors with Ocean optical emission spectroscopy systems,the OES data is collected from the polysilicon etching process,and principle component analysis（PCA）method be used to compress real time OES data,in order to implement real time processing of OES *** results show that the 405nm can relate to the degree of etching process,so it is suitable wavelength for state diagnostic and endpoint detection of polysilicon etching in high density ***,endpoint detection algorithm based on PCA was proposed to judge the endpoint of plasma etching.

关键词： plasma etching OES endpoint detection PCA

Support vector machine applied in QSAR modelling

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science Bulletin 2005年第20期 37-42页

作者： MEI Hu1,2, ZHOU Yuan3, LIANG Guizhao3 & LI Zhiliang1,2 1. college of Chemistry and Chemical engineering, Chongqing Univer- sity, Chongqing 400044, China 2. Key Laboratory of biomedical engineering of Ministry of Education and Chongqing City, Chongqing 400044, China 3. college of Bioengineering, Chongqing University, Chongqing 400044, China

Support vector machine (SVM), partial least squares (PLS), and Back-Propagation artificial neural net- work (ANN) were employed to establish QSAR models of 2 dipeptide datasets. In order to validate predictive capabilities on external dataset of the resulting models, both internal and external validations were performed. The division of dataset into both training and test sets was carried out by D-optimal design. The results showed that support vector machine (SVM) behaved well in both calibration and prediction. For the dataset of 48 bitter tasting dipeptides (BTD), the results obtained by support vector regression (SVR) were superior to that by PLS in both calibration and prediction. When compared with BP artificial neural network, SVR showed less calibration power but more predictive capability. For the dataset of angiotensin-converting enzyme (ACE) inhibitors, the results obtained by support vector machine (SVM) re- gression were equivalent to those by PLS and BP artificial neural network. In both datasets, SVR using linear kernel function behaved well as that using radial basis kernel func- tion. The results showed that there is wide prospect for the application of support vector machine (SVM) into QSAR modeling.

关键词： support vector machine (SVM) partial least squares (PLS) back-propagation (BP) artificial neural network (ANN) quantitative structure-activity relationship (QSAR).

Analysis of a 2D “liquid”plasma lattice

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science China(Physics,Mechanics & Astronomy) 2004年第1期47卷 129-136页

作者： HUA Jianjun1, LIU Yanhong1 & ZHANG Zhihe2 1. Institute of Physics, Chinese Academy of sciences, Beijing 100080, China 2. college of biomedical engineering, Capital University of Medical sciences, Beijing 100054, China Correspondence should be addressed to Hua Jianjun (email: jj_hua@***) Received September 20, 2003 1. Institute of Physics Chinese Academy of Sciences 100080 Beijing China 2. college of biomedical engineering Capital University of Medical Sciences 10054 Beijing China

To study the structural and dynamical properties of a 2D dusty plasma lattice, a set of experiments were performed in an environment of radio frequency discharge. Based on the results of one of the experiments, pair correlation function, bond-orientational correlation function and mean square displacement of such a system were computed and analyzed. The bond-orientational correlation function is found to fit in with the law of e?r , and the mean square displacement is found to increase monotonously with time, both of which, together with the pair correlation function, indicate that the two-dimensional dusty plasma lattice formed in the experiment stayed in a “liquid” state.

关键词： plasma lattice, pair correlation function, bond-orientational correlation function, mean square displacement.

A new filtering algorithm for infrared image

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A new filtering algorithm for infrared image

2010 3rd International Conference on Future biomedical Information engineering (FBIE 2010)

作者： Meng Ting Department of Information and Communication engineering college Harbin engineering University Harbin China Li Yi-bing Li Ao Department of Information and Communication engineering college Harbin engineering University Harbin China

The image filtering technology is widely used in many fields, such as environmental monitoring and assessment, space remote sensing, recognition and tracking of infrared target. In this paper, aiming at the problem of poor generalization capability and over-fitting with artificial neutral network for infrared image filtering, a new filtering method is presented. It uses the structure elements to set up the training samples, and then, based on support vector machine theory, it builds the learning machine with proper model and trains the samples. The result can be used to suppress the background SNR of following image. The experiment result with infrared image shows that the method can get higher SNR than traditional neutral network and fixed Top-Hat operator method, especially in low SNR.

关键词： Image filtering Neutral Network Support Vector Machine Top-Hat operator

A facil and simple synthesis of 1,2-arylsulfonyl hydrazides under solvent-free conditions

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A facil and simple synthesis of 1,2-arylsulfonyl hydrazides ...

第七届全国磷化学化工暨第四届海峡化学生物学、生物技术与医药发展讨论会

作者： Zhao Na Li Yanqiu Wang Yulu Wang Jinye college of Chemistry and Environmental science Key Laboratory of Environmental Pollution Control Technology of Henan Province Henan Normal University Xinxiang Henan 453007 biomedical engineering Shanghai Jiao Tong University 1954 Huashan Road Shanghai 200030

The original research results suggest that a series of sulfonyl hydrazides are valuable as inhibitors,agrochemical fungicides, insecticides and photographic ***, they are prepared by the reaction of sulphonyl chloride and hydrazines or reduction of azocompounds. Under their conditions,they gave a mixture of 1,1- and 1,2-sulfonylhydrazines, which associated with difficult separation and low yields. Thus, simple, convenient and

关键词： A facil and simple synthesis of 1,2-arylsulfonyl hydrazides under solvent-free conditions

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链传动的计算机辅助设计

陕西师范大学学报（自然科学版） 2001年第S1期29卷 42-44页

作者：马建辉杨铁牛西安理工大学机械与精密仪器工程学院陕西西安710048 西北农林科技大学农业机械系陕西杨凌712100

根据链传动的特点 ,设计开发了实用的链传动的计算机辅助设计系统 .提出了采用开放式、易操作、便于使用的设计思想 .详细说明了系统开发的具体方法与步骤 .

关键词：链传动计算机辅助设计接口

STUDIES ON THE PREPARATION AND APPLICATION OF PROGESTERONE IMMUNOLOGICAL LATEX

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Chinese Journal of biomedical engineering(English Edition) 1999年第3期8卷 26-27页

作者： Mao Jinshu Chang Jin(college of Material science, Tianin University, Tianjin(300072), China)