http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Fan Dong Kong,Li Man Zhou,Qing Yun Ma,Sheng Zhuo Huang,Pei Wang,Hao Fu Dai,You-Xing Zhao 대한약학회 2017 Archives of Pharmacal Research Vol.40 No.1
Three new compounds named penicitor A,aculene E and penicitor B, as well as four known compounds,were isolated from the fermentation broth ofPenicillium sp. SCS-KFD08 associated with a marineanimal Sipunculus nudus from the Haikou bay of China. Their planar structures and absolute configurations wereunambiguously elucidated by spectroscopic data, Mosher’smethod, CD spectrum analysis along with quantumECD calculation. Among them, compounds 2–7 showedquorum sensing inhibitory activity against Chromobacteriumviolaceum CV026, and could significantly reduceviolacein production in N-hexanoyl-l-homoserine lactone(C6-HSL) induced C. violaceum CV026 cultures at subinhibitoryconcentrations.
Optimization dynamic responses of laminated multiphase shell in thermo-electro-mechanical conditions
Fan, Linyuan,Kong, Degang,Song, Jun,Moradi, Zohre,Safa, Maryam,Khadimallah, Mohamed Amine Techno-Press 2022 Advances in nano research Vol.13 No.1
The optimization for dynamic response associated with a cylindrical shell which is made of laminated composites embedded in a piezoelectric layer which is subjected to temperature rises and is resting on an elastic foundation is investigated for the first time. The first shear order theory (FSDT) is utilized in order to obtain the strain relations of the shell. Then, using the energy method, the equations of motions as well as boundary condition of the problem are attained. The formulation of this study together with the solution procedure which is a numerical solution method, differential quadrature method (DQM) is validated using other researches. This paper presents a thorough study on the parameters which impacts the vibration frequency of the laminated shell. The results of this paper shows that any type of laminated composite shell can reduce the vibration frequency providing that the angle related to layer are higher than 85 degrees. Also, in order to reduce the effect of temperature rises, the laminated composites instead of orthotropic one can be used.
Preparation and evaluation of enrofloxacin microspheres and tissue distribution in rats
Fan Yang,Jijun Kang,Fang Yang,Zhensheng Zhao,Tao Kong,Zhenling Zeng 대한수의학회 2015 Journal of Veterinary Science Vol.16 No.2
New enrofloxacin microspheres were formulated, and their physical properties, lung-targeting ability, and tissue distribution in rats were examined. The microspheres had a regular and round shape. The mean diameter was 10.06 μm, and the diameter of 89.93% of all microspheres ranged from 7.0 μm to 30.0 μm. Tissue distribution of the microspheres was evaluated along with a conventional enrofloxacin preparation after a single intravenous injection (7.5 mg of enrofloxacin/kg bw). The results showed that the elimination half-life (t1/2β) of enrofloxacin from lung was prolonged from 7.94 h for the conventional enrofloxacin to 13.28 h for the microspheres. Area under the lung concentration versus time curve from 0 h to ∞ (AUC0-∞) was increased from 11.66 h·μg/g to 508.00 h·μg/g. The peak concentration (Cmax) in lung was increased from 5.95 μg/g to 93.36 μg/g. Three lung-targeting parameters were further assessed and showed that the microspheres had remarkable lung-targeting capabilities.
Kong, S.M.,Fan, R.,Jung, S.H.,Chung, C.W. Korean Society of Industrial and Engineering Chemi 2013 Journal of industrial and engineering chemistry Vol.19 No.4
Cu(In<SUB>1-x</SUB>Ga<SUB>x</SUB>)Se<SUB>2</SUB> (CIGS) thin films were prepared using a single quaternary target by RF magnetron sputtering. The effects of deposition parameters on the structural, compositional and electrical properties of the films were examined in order to develop the deposition process without post-deposition selenization. From X-ray diffraction analysis, as the substrate temperature and Ar pressure increased and RF power decreased, the crystallinity of the films improved. The scanning electron microscopy revealed that the grains became uniform and circular shape with columnar structure with increasing the substrate temperature and Ar pressure, and decreasing the RF power. The carrier concentration of CIGS films deposited at the substrate temperature of 500<SUP>o</SUP>C was 2.1x10<SUP>17</SUP>cm<SUP>-3</SUP> and the resistivity was 27Ωcm. At the substrate temperature above 500<SUP>o</SUP>C, In and Se contents in CIGS films decreased due to the evaporation and it led to the deterioration of crystallinity. It was confirmed that CIGS thin films deposited at optimal condition had similar atomic ratio to the target value even without post-deposition selenization process.
Lateral stiffness of corner-supported steel modular frame with splice connection
Yi-Fan Lyu,Guo-Qiang Li,Ke Cao,Si-Yuan Zhai,De-Yang Kong,Xuan-Yi Xue,Heng Li 국제구조공학회 2023 Steel and Composite Structures, An International J Vol.48 No.3
This paper proposes a comprehensive investigation on lateral stiffness of corner-supported steel modular frame using splice connection. A full-scale modular frame with two stacked steel modules under lateral load is tested. Ductile pattern in the transfer of lateral load is found in the final failure mode. Two types of lateral stiffness, including tangent stiffness and secant stiffness, are defined from the load-displacement due to the observed nonlinearity. The difference between these two types of stiffness is found around 20%. The comparisons between the experimental lateral stiffness and the predictions of classical methods are also conducted. The D-value method using hypothesis of independent case is a conservative option for predicting lateral stiffness, which is more recommended than method of contraflexural bending moment. Analyses on two classical shortrod models, including fix-rod model and pin-rod model, are further conducted. Results indicate that fix-rod model is more recommended than pin-rod model to simplify splice connection for simulation on lateral stiffness of modular frame in elastic design stage.
New Calibration Method of Two-Dimensional Laser Scanner and Camera Based on LM-BP Neural Network
Jianlei Kong,Li Fan,Jinhao Liu,Lei Yan,Xiaokang Ding 보안공학연구지원센터 2016 International Journal of Signal Processing, Image Vol.9 No.7
The calibration between a camera and a two-dimensional laser scanner (2DLS) is an essential step in the object detecting system. Many algorithms with linear model have been proposed. But these tend to solve intrinsic and extrinsic calibration parameters separately and are influenced seriously by the poor initial data, which leads to unstable and inaccurate results. Hence, a new nonlinear model based on the Back Propagation neural network trained by the Levenberg-Marquardt algorithm (LM-BP) is presented for calibration in this paper. Before the calibration, the original laser data is fitted linearly to avoid the ranging error and is optimized by an angular increment to reduce the step-angular error. Then, the calibration network with 4 inputs composed of the lasers points’ coordinates and constant 1, and 2 outputs are obtained, expected values of which are the coordinates of corresponding points in the image coordinates. The sum of square of errors between the network outputs and expected values is taken to adjust the modifications of the weights and thresholds with the Levenberg-Marquardt method to optimize the calibration model. Finally, compared with related researches, experimental results show that the accuracy of calibration between camera and 2DLS is significantly improved, and the detecting system is more suitable for actual measurement situations.