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Detection of Transmissible Gastroenteritis Virus by RT-PCR

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Detection of Transmissible Gastroenteritis Virus by RT-PCR

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

作者： Ming Li 1 Guang-jun Song and Yuan Guo college of Computer and Control engineering University of Qiqihar Qiqihar Heilongjiang Province China Tian-fei Yu 1 college of Life science and Agriculture Forestry University of Qiqihar Qiqihar Heilongjiang Province China college of Computer and Control engineering University of Qiqihar college of Life science and Agriculture Forestry University of Qiqihar

Transmissible gastroenteritis virus （TGEV） is the causative agent of porcine transmissible gastroenteritis （TGE）.In this research,a reverse transcription-polymerase chain reaction （RT-PCR） method was developed to detect *** field faecal samples from ten piglets about two months old which showed up clinical symptom used for *** was detected in 10 samples （100%） by RT-PCR *** method could provide a means of confirming positive results in the detection of TGEV antigens in gut *** study indicates that the assay is rapid,reliable and sensitive and it has the potential for use as a molecular method for TGEV diagnosis.

关键词： Transmissible gastroenteritis virus Spike protein RT-PCR.

Monitoring Radar Signal with Digital Alias-free Signal Processing Techniques

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Monitoring Radar Signal with Digital Alias-free Signal Proce...

第三届国际仪器科学技术学术研讨会

作者： LIU Xian-yong a c SHANG Li-ping b a School of Information and Control engineering Southwest University of science and Technology China b college of electrical engineering Yanshan University China c Department of Automatic Control Beijing Institute of Technology China

A novel radar signal monitor is developed for appointed D-Band radars so as to enhance their maintenance. By fully using the characteristics of the radar signal pulses and the 300ps aperture time of t

关键词： Radar Digital Alias-free Signal Processing Monitor Virtual instrumentation maintenance

Elasticity imaging for regularly spaced structures utilizing WT matched filtering method

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Progress in Natural science:Materials International 2002年第8期 50-56页

作者： CUI Yaoyao, WAN Mingxi, ZHEN Bin, LI Junbo and WANG Supin(Department of biomedical engineering, Xi’an Jiaotong University, Xi’an 710049, China) Department of biomedical engineering Xi'an Jiaotong University Xi'an 710049 China

Based on wavelet transform of time-scale domain, a new strain estimation method is presented to position the regular scatterers, calculate the local scatterer spacing and its change, and estimate the internal strain distribution of tissue mimicking phantom. Simulation and experiment results for uniform and nonuniform phantoms show the internal strain of regularly spaced structures can be estimated accurately using this method and the influence of global boundary condition on the estimated strain distribution can be eliminated by reconstructing the real elasticity distribution. This approach has the potentials to become a valuable tool for the regularly spaced structures.

关键词： elastography local scatterer spacing wavelet transform strain imaging.

Preparation and Characterization of Electrochemical Glucose Sensor Based on Nickel electrodes Supported by Silicon Microchannel Plates

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Preparation and Characterization of Electrochemical Glucose ...

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

作者： Bairui Tao Fengjuan Miao college of Communications and Electronics engineering Qiqihar University Qiqihar Heilongjiang Province China Yongjie Zheng science and Technology Department Qiqihar University Qiqihar Heilongjiang Province China

A novel nickel nanocomposite electrode supported by 3D ordered silicon microchannel plates （MCP） had been reported and its electrocatalytic toward the oxidation of glucose for sensor had been studied. The 3D ordered Si MCP electrodes were first fabricated by electrochemical etching and then Nickel nanoparticles were deposited onto the sidewall of the MCP via electroless deposition followed by annealing at 300?C for 300 s under argon to stabilize the structure. The morphology of the Ni/Si-MCP electrode was characterized by Scanning electron microscope （SEM） and X-ray diffraction （XRD）. The electrochemical methods were employed to investigate the Ni/Si-MCP materials. The Ni/Si-MCP nanocomposites exhibit superior electrocatalytic properties towards glucose electro- oxidation in alkaline solutions, in addition to showing excellent long-term stability and good reproducibility.

关键词： glucose electro-oxidation Ni/Si-MCP electrode Electroless plating 3D ordered array

Merging SoC and LOC Together

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Merging SoC and LOC Together

2008 9th International Conference on Solid-State and Integrated-Circuit Technology

作者： Zhihong Li1, Xu Ji 1, Lu Wang 2, Jianzhong Xi 2 (1. National Key Laboratory of Nano/Micro Fabrication Technology, Institute of Microelectronics, Peking University, Beijing, 100871, China 2 biomedical engineering Center, college of engineering, Peking University, Beijing, 100871, CHINA)

A promising combination of the semiconductor integrated System-on-a-Chip （SoC） with the Lab-on-a-Chip （LOC） is brought in this paper. In this paper, we propose a new technology which enables monolithic integration of the self-assembled biological system, the MEMS structure, the microfluidic system, and CMOS electronic circuits together. Utilizing this approach, more functionality is introduced into the SoC, while the LOC becomes more intelligent and controllable. A Post-CMOS fabrication approach that meets the requirements is demonstrated to validate the idea.

关键词：

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高频补偿倾斜电极型宽带声光叉指换能器

中国激光 2004年第1期31卷 33-36页

作者：林航友宁继平胡鸿璋王顺权耿凡天津大学精密仪器与光电子工程学院天津大学应用物理系天津300072 航天部8358研究所第三院天津300192

提出了一种新型的宽带声光表面波叉指换能器 (SAW IDT) ,该换能器应用双梯形倾斜电极 ,可对单梯形倾斜电极IDT通带的高频成分进行补偿 ,使通带更宽更平直 ,并无需外补偿网络。通过计算机模拟得出IDT的优化高频补偿因子 ρ=0 12 及其他... 详细信息

提出了一种新型的宽带声光表面波叉指换能器 (SAW IDT) ,该换能器应用双梯形倾斜电极 ,可对单梯形倾斜电极IDT通带的高频成分进行补偿 ,使通带更宽更平直 ,并无需外补偿网络。通过计算机模拟得出IDT的优化高频补偿因子 ρ=0 12 及其他的优化参数。该器件以Y切X传Ti扩散LiNbO3 作为光波导 ,以～ 15 0nm厚的SiO2 /In2 O3 薄膜作为声波导 ,声孔径W0 =110 μm ,叉指对数 N =9。IDT的中心频率为 187 7MHz,Bragg声光带宽为 5 5 3MHz,通带斜率为 0 0 0 ,通带凹陷深度 <1 0dB。当模转换效率为 99%时 ,测得射频 (RF)驱动功率为 4 5mW ,该器件可望作为 1 15～ 1 6 5

关键词：集成光学声光可调谐滤波器声光表面波叉指换能器声光频谱分析仪高频补偿倾斜电极型

RESEARCH OF A NEW PORTABLE GC instrumentATION AND ITS APPLICATION IN biomedical engineering

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Chinese Journal of biomedical engineering(English Edition) 1997年第4期6卷 243-248页

作者： Li Fucheng Li Zhiyi Pan Qi (college of Precision instrumentation and photoelectron engineering Tianjin University, Tianjin, 300072, China)

-A Portable gas chromatograPhy (GC) instrument is presented in this paper. In this GC instrument a new gaseous sampling device was used in place of conventional sampling *** has no quantitative tube or movable components in the sample Path. The sampling size si determined by time with a high precision,which is not sensitive to the sample temperature and ***,the sample can not only inject into the column head,but also the carrier gas blow the column reversely and clean *** portable GC instrument based on the sampling device can be used in enviromental and biomedical monitoring.

关键词： Gas Chromatograpky Sampling Device Portable instrument.

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旋转中空角体棱镜式实时自相关器

中国激光 2000年第2期27卷 131-134页

作者：邢岐荣孙涛王明伟柴路张伟力王清月天津大学精仪学院超快激光研究室光电信息技术科学教育部重点实验室天津300072

提出并实验研究了采用旋转中空角体棱镜作为光学延迟器的二阶实时光学自相关器。用于飞秒锁模掺钛蓝宝石激光器输出的脉冲测试表明,该相关器运转稳定、可靠。提出了用计算机对所测相关曲线进行误差补偿的概念。

关键词：飞秒激光自相关器中空角体棱镜脉宽测量

A NEW DESCRIPA NEW DESCRIPTOR OF AMINO ACIDS BASED ON THE THREEDIMENSIONAL VECTOR OF ATOMIC INTERACTION FIELD

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Chinese science Bulletin 2006年第5期51卷 524-529页

作者： ZHOU Peng1,2, ZHOU Yuan2,3, WU Shirong1,2, LI Bo1,2, TIAN Feifei1,2 & 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 Municipality, Chongqing 400044, China 3. college of Bioengineering, Chongqing University, Chongqing 400044, China

A noval molecular structural expression method, three-dimensional vector of atomic interac- tion field (3D-VAIF), has been newly developed based on electrostatic and steric interaction between different types of atoms. Feature descriptors of single amino acid, i.e. principal component scores of struc- tural information for amino acids (SSIA), are obtained through calculation of structural information of 20 coded amino acids using principal component analy- sis (PCA) method, and the strict tests are performed on the property of SSIA by three quantitative struc- ture-activity relationships (QSARs)/quantitative se- quence-activity models (QSAMs) models of 58 ngio- tensin-converting enzymes (ACE), 48 bitter tasting thresholds (BTT) and 31 bradykinin potentiating pentapeptides (BPP). Cumulative multiple correlation coefficients (Rc2um) are 0.789, 0.856 and 0.838; and corresponding cross-validated correlation coefficients (QL2OO) are 0.773, 0.837 and 0.815, respectively. Good results indicate that SSIA are better than tradi- tional descriptors of amino acid in quantitative se- quence-activity relationships of peptide analogues.

关键词：氨基酸结构信息原子间相互作用力场定量构效关系量子化学主成分分析多重回归分析偏最小二乘回归