Photopolymerization of UV Curable Coatings Monitored by Raman Spectroscopy

Fengguo Liu,Ying Wang,Xiangxin Xue,He Yang 한국고분자학회 2016 폴리머 Vol.40 No.3

Photopolymerization process of UV curable coatings based on epoxy acrylate/tripropylene glycol diacrylate was monitored by Raman spectroscopy. The consumption of C=C double bond in coatings was observed under UV irradiation. Quantitative analysis of curing degree versus UV irradiation time was investigated by fitting Raman spectra. The results indicated that the initiation efficiency of cleavage type photoinitiators and Irgacure 184 are superior to that of hydrogen-abstraction type photoinitiator. High photoinitiator concentration is beneficial for achieving fast photopolymerization rate and high final conversion. However, when the concentration of photoinitiator exceeds a certain value, the polymerization rate and final conversion will not increase evidently because of initiation efficiency and free volume effect.

Establishment of a special pathogen free Chinese Wuzhishan Minipigs Colony

Pan, Jinchun,Min, Fangui,Wang, Xilong,Chen, Ruiai,Wang, Fengguo,Deng, Yuechang,Luo, Shuming,Ye, Jiancong Korean Society of Animal Science and Technology 2015 한국축산학회지 Vol.57 No.3

To meet the increasing demands of specific pathogen free (SPF) minipigs in biomedical researches, 8 pregnant Chinese Wuzhishan minipigs (WZSP) sows with clear background were chosen to obtain SPF WZSP by hysterectomy. At $111{\pm}days2$ of the pregnancy, piglets were aseptically taken out from the sows and artificially suckled for 40 to 45 days in the positive isolators. Then, the piglets defined as F0 were transferred to barrier environment and fed with standard feeds. The original SPF colony was formed for breeding by selected piglets from F0 group of 6-8 months old. Biological characteristics of SPF WZSP were collected and further compared to those of conventional (CV) WZSP, including growth performance, reproductive performance, hematology and blood biochemistry, and major pathogens detection. As a result, 61 F0 piglets were obtained from 8 candidate sows, and 55 out of them survived. After strictly selection, 35 F0 piglets were used to form the original SPF colony, which produced 14 litters of SPF piglets defined as F1. Piglet survival rates, growth performance, and reproductive performance of SPF WZSP were similar to CV WZSP. Some hematology and blood biochemistry parameters showed significant differences between SPF and CV WZSP. Eighteen kinds of pathogens were identified to be free in F0 and F1 SPF colony by repeated pathogen detections. In conclusion, we established a satisfied SPF WZSP colony maintaining original characteristics, free of controlled diseases, and being proved to be a suitable laboratory animal.

Establishment of a special pathogen free Chinese Wuzhishan Minipigs Colony

Jinchun Pan,Fangui Min,Xilong Wang,Ruiai Chen,Fengguo Wan,Yuechang Deng,Shuming Luo,Jiancong Ye 한국축산학회 2015 한국축산학회지 Vol.57 No.3

To meet the increasing demands of specific pathogen free (SPF) minipigs in biomedical researches, 8 pregnantChinese Wuzhishan minipigs (WZSP) sows with clear background were chosen to obtain SPF WZSP byhysterectomy. At 111 ± 2 days of the pregnancy, piglets were aseptically taken out from the sows and artificiallysuckled for 40 to 45 days in the positive isolators. Then, the piglets defined as F0 were transferred to barrierenvironment and fed with standard feeds. The original SPF colony was formed for breeding by selected pigletsfrom F0 group of 6–8 months old. Biological characteristics of SPF WZSP were collected and further compared tothose of conventional (CV) WZSP, including growth performance, reproductive performance, hematology and bloodbiochemistry, and major pathogens detection. As a result, 61 F0 piglets were obtained from 8 candidate sows, and55 out of them survived. After strictly selection, 35 F0 piglets were used to form the original SPF colony, whichproduced 14 litters of SPF piglets defined as F1. Piglet survival rates, growth performance, and reproductiveperformance of SPF WZSP were similar to CV WZSP. Some hematology and blood biochemistry parameters showedsignificant differences between SPF and CV WZSP. Eighteen kinds of pathogens were identified to be free in F0 andF1 SPF colony by repeated pathogen detections. In conclusion, we established a satisfied SPF WZSP colonymaintaining original characteristics, free of controlled diseases, and being proved to be a suitable laboratory animal

Establishment of a special pathogen free Chinese Wuzhishan Minipigs Colony

( Jin Chun Pan ),( Fang Ui Min ),( Xilong Wang ),( Ruiai Chen ),( Fengguo Wang ),( Yuechang Deng ),( Shuming Luo ),( Jiancong Ye ) 한국동물자원과학회(구 한국축산학회) 2015 한국축산학회지 Vol.57 No.7

To meet the increasing demands of specific pathogen free (SPF) minipigs in biomedical researches, 8 pregnant Chinese Wuzhishan minipigs (WZSP) sows with clear background were chosen to obtain SPF WZSP by hysterectomy. At 111 ± 2 days of the pregnancy, piglets were aseptically taken out from the sows and artificially suckled for 40 to 45 days in the positive isolators. Then, the piglets defined as F0 were transferred to barrier environment and fed with standard feeds. The original SPF colony was formed for breeding by selected piglets from F0 group of 6-8 months old. Biological characteristics of SPF WZSP were collected and further compared to those of conventional (CV) WZSP, including growth performance, reproductive performance, hematology and blood biochemistry, and major pathogens detection. As a result, 61 F0 piglets were obtained from 8 candidate sows, and 55 out of them survived. After strictly selection, 35 F0 piglets were used to form the original SPF colony, which produced 14 litters of SPF piglets defined as F1. Piglet survival rates, growth performance, and reproductive performance of SPF WZSP were similar to CV WZSP. Some hematology and blood biochemistry parameters showed significant differences between SPF and CV WZSP. 18 kinds of pathogens were identified to be free in F0 and F1 SPF colony by repeated pathogen detections. In conclusion, we established a satisfied SPF WZSP colony maintaining original characteristics, free of controlled diseases, and being proved to be a suitable laboratory animal.

Study on Global Optimization and Control Strategy Development for a PHEV Charging Facility

Feng Guo,Inoa, E.,Woongchul Choi,Jin Wang IEEE 2012 IEEE Transactions on Vehicular Technology VT Vol.61 No.6

<P>This paper provides a full study of a photovoltaic (PV)-aided plug-in hybrid electric vehicle (PHEV) charging facility by investigating the two most challenging technical issues: 1) sizing of the local energy storage (LES) unit and 2) control strategies of the facility. First, the paper proposes a method for determining the optimal size of LES for a charging facility. Second, the paper develops a control strategy for the integration of the PHEV charging stations with the proposed LES and PVs. The proposed LES-sizing method, which is based on optimal control theory, minimizes a cost function based on the average value of kilowatt-hour price, irradiance, and PHEVs' usage patterns. A power-loss/temperature-based battery model and a temperature-based charging strategy previously developed by the authors are utilized to determine the optimal LES size. Afterward, with the optimized facility parameters, a detailed circuit model of the charging facility, including PVs, PHEVs, and LES, is constructed with a real-time simulation system. While an experimental setup for this kind of complex and high-cost system was not readily feasible, real-time simulation was carried out to prove the effectiveness of the proposed control strategy. To validate the effectiveness and accuracy of the real-time simulation, control hardware-in-the-loop (HIL) and power-inverter-based experiments have been carried out at the subsystem level.</P>