The Biotypes, Wing-forms and the Immigration of Brown Planthopper, Nilaparvata lugens Stal, in Zhejiang Province, China

Yu, Xiaoping,Lu, Zhongxian,Wu, Guorui,Tao, Linyong,Chen, Jianming,Zheng, Xusong,Xu, Hongxing Korean Society of Applied Entomology 2001 Journal of Asia-Pacific Entomology Vol.4 No.2

The virulence change (biotype), wing form development and immigration of brown planthopper (BPH) Nilaparvata lugens Stal, population in Zhejiang province was studied as compared to these BPH populations collected from Guangxi and Yunnan province, China and Philippines. The results indicate that the Zhejiang population could successfully infest variety IR26 and Mudgo after 1989, and ASD7 and IR36 after 1998, showing the characters of BPH biotype 2 and biotypes 3. The BPH tropical populations such as Guangxi population, however, adapted the resistant varieties IR26, Mudgo and ASD7 earlier. In 1997, the nymphal survival indices of Guangxi and Yunnan populations on Rathu Heenati (Bph3) were up to 70.9 and 66.7 respectively, higher than Zhejiang population. The Zhejiang populations show low brachupterous rates and have a negative correlation with nymphal density, belonging to the temperate type. The Philippine populations are almost brachypterous, however, the brachypterous rates of BPH males raise with the increase of nymphal density. The Guangxi population has a high brachypterous rate, being similar to the tropical type. On the other hand, tests showed that the lowest survival rate, longer duration of nymphs and the lightest weight of brachypterous female occurred in the $2^{nd}$ generation of BPH after continuously feeding on resistant variety. Physiologically, the highest activities of superoxide dismutase (SOD) and catalase (CAT) were detected in the second generation of the BPH feeding on resistant rice variety.

论杭州大运河水文化

余小平(Xiaoping Yu) 세계문화관광학회 2012 International Journal of Culture and tourism Resea Vol.5 No.2

从某种程度说, 水是城市的灵魂。杭州的环境优势就在于“水”, 它集江、河、湖、海、溪于一城, 是一座著名的“五水共导”的江南水城。千年运河从隋朝流淌至今, 带给a杭州千百年来的繁华, 并由此促成a杭州中国古都的地位, 构成a杭州城市重要的历史文化遗产和文化景观。而杭州城市发展的历史, 就是与京杭大运河的开拓、发展和繁荣紧密相关的。 本次交流论文试图通过京杭大运河对于杭州城市的形成与发展的历史作用, 以及与运河相伴而生的桥、船、码头等漕运文化物质遗存, 还有由运河产生的独特民居民俗风情和大量的运河诗词篇章等非物质文化角度, 对京杭大运河(杭州段)的水文化遗存进行系统、全面的整理和发掘, 全面展示大运河(杭州段)水文化的独特魅力, 为大运河(杭州段)水文化的开发提供必要的基础, 也为现代旅游发展中如何整理、发掘、弘扬历史文化提供一些新的思路。 To some extent, water is the soul of the city. The environmental advantages of Hangzhou, is the “water”, it set the rivers, lakes, sea and river in the city, is a well-known “Five Waters” Jiangnan Watertown. Millennium Canal flow far from the Sui Dynasty, bringing the downtown of Hangzhou thousands of years, and thus contributed to the position of the ancient capital of Hangzhou, China, constitute the Hangzhou city is an important historical and cultural heritage and cultural landscapes. The history of urban development in Hangzhou, with the exploration, development and prosperity of the Beijing-Hangzhou Grand Canal is closely related to theThe exchange of paper tried by the Beijing-Hangzhou Grand Canal the history of the formation and development of Hangzhou city, born of the bridge, boats, docks and other water transport canal accompanied by cultural material remains, as well as unique residential folk customs generated by the canal and a large number of the canal poetry chapter and other non-material cultural point of view, the Beijing-Hangzhou large Canal (Hangzhou section) of water cultural relics system, full finishing and excavation, comprehensive display large Canal (Hangzhou paragraph) the unique charm of the water culture, for the Grand Canal (Hangzhou above) and water culture developed to provide the necessary foundation, but also for the development of modern tourism in how to organize, explore and promote the history and culture to provide some new ideas.

Expression pattern of genes involved in maternal immune regulation during the peri-implantation and midgestation in Meishan pigs

Xiaoping Li,Zongping Zhang,Jiangnan Huang,Lijie Su,Mengjin Zhu,Mei Yu 한국유전학회 2013 Genes & Genomics Vol.35 No.3

In pigs, complex molecular cross-talk between the mother and embryo(s) especially maternal immunotolerance at the maternal-fetal interface has been postulated to play important roles on embryo/fetal loss during the peri-implantation and midgestation. In this study, we collected the endometrium samples in implantation sites at gestational day 15 (gd15), 26 (gd26)) and 50 (gd50)from Meishan pigs to evaluate the contribution of the genes participating in immune response by using porcine Affymetrix GeneChip.The results showed that totally 68immune related genes showed significantly differential expression at three stages, and the expression of these genes underwent drastic changes during the peri-implantation period (between gd15 and gd26). The identified genes including IL6 proinflammatory cytokine family,inflammatory chemokines (CCL28), IGF/IGFBP system,growth factors (FGF7) and adhesion molecules (ITGB3,PCDH15) may prove valuable for further investigations of porcine prenatal mortality.

Temporal Autocorrelation Properties of Three Dimensional Vehicle-to -Vehicle Channels in the Presence of Moving Scatterers

Xiaoping Zeng,Yu Zhou,Xin Jian,Jie Huang,Jing Li 보안공학연구지원센터 2015 International Journal of Future Generation Communi Vol.8 No.2

This paper derives the analytical expression of the temporal autocorrelation function (ACF) of the non-stationary three dimensional (3D) multipath scattering channels, in which scatterers move with constant velocities in random directions around transceivers. The analytical expression involves high dimensional integration within finite interval, thus a methodology based on ray-tracing is proposed to carry out its numerical solution. The analytical expression and the corresponding ray-tracing based model serve as the canonical forms for the correlation analysis of non-stationary 3D multipath scattering channels, which include two special cases: two dimensional (2D) multipath scattering and stationary multipath scattering. Numerical results show that: in case of non-stationary 3D multipath scattering, with the increase of the velocity and the density of scatterers, the temporal ACF would attenuate more rapidly. These results would allow engineers more appropriate determination on coherence time and coherence bandwidth for vehicle-to-vehicle communication systems.

Fetal ECG Extraction by Combining Single-Channel SVD and Cyclostationarity-Based Blind Source Separation

XiaoPing Zeng,ShaoHua Li,GuoJun Li,Yu Zhou,DaiHui Mo 보안공학연구지원센터(IJSIP) 2013 International Journal of Signal Processing, Image Vol.6 No.4

MicroRNA-766-3p Inhibits Tumour Progression by Targeting Wnt3a in Hepatocellular Carcinoma

Yu You,Keting Que,Yun Zhou,Zhen Zhang,Xiaoping Zhao,Jianpin Gong,Zuojin Liu 한국분자세포생물학회 2018 Molecules and cells Vol.41 No.9

Recent studies have indicated that microRNAs (miRNAs) play an important role in hepatocellular carcinoma (HCC) progression. In this study, we showed that miR-766-3p was decreased in approximately 72% of HCC tissues and cell lines, and its low expression level was significantly correlated with tumour size, TNM stage, metastasis, and poor prognosis in HCC. Ectopic miR-766-3p expression inhibited HCC cell proliferation, colony formation, migration and invasion. In addition, we showed that miR-766-3p repressed Wnt3a expression. A luciferase reporter assay revealed that Wnt3a was a direct target of miR-766-3p, and an inverse correlation between miR-766-3p and Wnt3a expression was observed. Moreover, Wnt3a up-regulation reversed the effects of miR-766-3p on HCC progression. In addition, our study showed that miR-766-3p up-regulation decreased the nuclear β-catenin level and expression of Wnt targets (TCF1 and Survivin) and reduced the level of MAP protein regulator of cytokinesis 1 (PRC1). However, these effects of miR-766-3p were reversed by Wnt3a up-regulation. In addition, PRC1 upregulation increased the nuclear β-catenin level and protein expression of TCF1 and Survivin. iCRT3, which disrupts the β-catenin-TCF4 interaction, repressed the TCF1, Survivin and PRC1 protein levels. Taken together, our results suggest that miR-766-3p down-regulation promotes HCC cell progression, probably by targeting the Wnt3a/PRC1 pathway, and miR-766-3p may serve as a potential therapeutic target in HCC.

MicroRNA-766-3p Inhibits Tumour Progression by Targeting Wnt3a in Hepatocellular Carcinoma

You, Yu,Que, Keting,Zhou, Yun,Zhang, Zhen,Zhao, Xiaoping,Gong, Jianpin,Liu, Zuojin Korean Society for Molecular and Cellular Biology 2018 Molecules and cells Vol.41 No.9

Recent studies have indicated that microRNAs (miRNAs) play an important role in hepatocellular carcinoma (HCC) progression. In this study, we showed that miR-766-3p was decreased in approximately 72% of HCC tissues and cell lines, and its low expression level was significantly correlated with tumour size, TNM stage, metastasis, and poor prognosis in HCC. Ectopic miR-766-3p expression inhibited HCC cell proliferation, colony formation, migration and invasion. In addition, we showed that miR-766-3p repressed Wnt3a expression. A luciferase reporter assay revealed that Wnt3a was a direct target of miR-766-3p, and an inverse correlation between miR-766-3p and Wnt3a expression was observed. Moreover, Wnt3a up-regulation reversed the effects of miR766-3p on HCC progression. In addition, our study showed that miR-766-3p up-regulation decreased the nuclear ${\beta}-catenin$ level and expression of Wnt targets (TCF1 and Survivin) and reduced the level of MAP protein regulator of cytokinesis 1 (PRC1). However, these effects of miR-766-3p were reversed by Wnt3a up-regulation. In addition, PRC1 upregulation increased the nuclear ${\beta}-catenin$ level and protein expression of TCF1 and Survivin. iCRT3, which disrupts the ${\beta}-catenin-TCF4$ interaction, repressed the TCF1, Survivin and PRC1 protein levels. Taken together, our results suggest that miR-766-3p down-regulation promotes HCC cell progression, probably by targeting the Wnt3a/PRC1 pathway, and miR-766-3p may serve as a potential therapeutic target in HCC.

Statistical Description and Analysis of the Concurrent Data Transmission from Massive MTC Devices

Xin Jian,Xiaoping Zeng,Jie Huang,Yunjian Jia,Yu Zhou 보안공학연구지원센터 2014 International Journal of Smart Home Vol.8 No.4

Monitoring Failure Behaviour of Pultruded CFRP Composites by Electrical Resistance Measurement

Mao, Yaqin,Yu, Yunhua,Wu, Dezhen,Yang, Xiaoping Korean Carbon Society 2004 Carbon Letters Vol.5 No.1

The failure behaviours of unidirectional pultruded carbon fiber reinforced polymer (CFRP) composites were monitored by the electrical resistance measurement during tensile loading, three-point-bending, interlaminar shear loading. The tensile failure behaviour of carbon fiber tows was also investigated by the electrical resistance measurement. Infrared thermography non-destructive evaluation was performed in real time during tensile test of CFRP composites to validate the change of microdamage in the materials. Experiment results demonstrated that the CFRP composites and carbon fiber tows were damaged by different damage mechinsms during tensile loading, for the CFRP composites, mainly being in the forms of matrix damage and the debonding between matrix and fibers, while for the carbon fiber tows, mainly being in the forms of fiber fracture. The correlation between the infrared thermographs and the change in the electrical resistance could be regarded as an evidence of the damage mechanisms of the CFRP composites. During three-point-bending loading, the main damage forms were the simultaneity fracture of matrix and fibers firstly, then matrix cracking and the debonding between matrix and fiber were carried out. This results can be shown in Fig. 9(a) and (b). During interlaminar shear loading, the change in the electrical resistance was related to the damage degree of interlaminar structure. Electrical resistance measurement was more sensitive to the damage behaviour of the CFRP composites than the stress/time curve.

Carbon dioxide (CO2) concentrations and activated carbon fiber filters in passenger vehicles in urban areas of Jeonju, Korea

Hong Gun Kim,Yunhua Yu,Xiaoping Yang,Seung Kon Ryu 한국탄소학회 2018 Carbon Letters Vol.26 No.-

The South Korean Ministry of the Environment has revised the laws relating to the management of interior air quality for multiple use facilities, and recommends maintaining carbon dioxide (CO2) concentration in passenger vehicles below 1000 ppm during operation in urban areas of large cities. However, the interior CO2 concentration of passenger vehicles can rapidly increase and exceed 5000 ppm within 30 min, as observed when two passengers are traveling in urban areas of the South Korean city of Jeonju with the air conditioner blower turned off and the actuator mode set to internal circulation mode. With four passengers, CO2 concentration can reach up to 6000 ppm within 10 min. To counter this, when the actuator is set to external mode, CO2 concentration can be maintained below 1000 ppm, even after a long period of running time. As part of the air conditioning system, alkali-treated activated carbon fiber filters are considered to be far superior to the commercial non-woven filters or combination filters currently commonly in use.