A Human Case of Lumbosacral Canal Sparganosis in China

Jian-Feng Fan,Sheng Huang,Jing Li,Ren-Jun Peng,He Huang,Xi-Ping Ding,Li-Ping Jiang,Jian Xi 대한기생충학열대의학회 2021 The Korean Journal of Parasitology Vol.59 No.6

Design and Implementation of Campus Information System with Android and Web Dual-mode Based on MVC Pattern

Feng Jian,Ren Jian,Fan Ren-Yi,Lei Jing 보안공학연구지원센터 2015 International Journal of u- and e- Service, Scienc Vol.8 No.7

Mobile application for campus is an integral part of the construction of wisdom campus. CampusService - a campus information service system is designed, and is comprised of three parts, Android client, Web client and server, which are all designed according to MVC pattern. C/S architecture is adopted between the Android client and the server, B/S architecture is adopted between the Web client and the server, and JSON is used as a unified data interface for accomplishing the interactions. The architectures of three parts are described, and key technologies are represented, including database access optimization, Android display, transaction management and authentication, among which database access optimization technology has two respects: using C3P0 to maintain connection pool and prefetching data based on their popularity. According to testing, the system implements functions of user management, intramural announcements, interaction with friends, activity participation, and campus maps, and it has good performance. The system provides an efficient platform for real-time communication among teachers, students and school authority.

Decoding Tropospheric Ozone in Hangzhou, China: from Precursors to Sources

Feng Rui,Luo Kun,Fan Jian-ren 한국기상학회 2020 Asia-Pacific Journal of Atmospheric Sciences Vol.56 No.3

For the purpose of providing a tropospheric O3 control strategy for Hangzhou, China, we investigate the influential factors of it using observed data and the WRF-CMAQ model. The result indicates that temperature and relative humidity are the dominant factors and Hangzhou belongs to VOC-limited regime. Long-range/regional transport accounts for 15.4% and 17.4% of O3 in autumn and winter, respectively, showing a north-to-south transport pattern while 14.5% and 19.7% of O3 in spring and summer, respectively, showing a southwest-to-northeast transport pattern. Annual contribution of local industry to local O3 was 59.2%, followed by residence, traffic and agriculture. Ethylene, m/p-xylene, toluene and propylene are the main O3 producers. Therefore, controlling VOCs species that possess the highest ozone formation potentials, afforestation, implementing artificial precipitation and shutdown local industry are the most effective ways to mitigate ozone pollution in Hangzhou.

Analysis of Shear Connector of Steel–Concrete Composite Box-Girder Bridge Considering Interfacial Bonding and Friction

Jian-Ping Lin,ZhiBo Wu,Ying Yin,Fan Feng 한국강구조학회 2020 International Journal of Steel Structures Vol.20 No.2

Steel–concrete composite bridges consist of steel and concrete parts which are connected by shear connector such as the widely-used headed stud. Through the chemistry bonding, interface friction and mechanical action the two different materials parts are combined as a composite structure system. Because of the structural mechanism, longitudinal and lateral relative slip and normal separation between the concrete deck and steel girder flange will inevitably exist during the loading process. Further, the complex interface mechanical behavior causes difficulties with nonlinear numerical analysis. Multiple broken lines mode cohesive zone model considering bonding and friction is used in this paper to describe the tangent slip and normal crack of the interface. A zero thickness cohesive element was implemented via the user-defined element subroutine UEL in ABAQUS. Using this method, numerical simulation analysis of a two span composite continuous box-girder was carried out. Results showed load–displacement curves of the structure, relative displacement between the steel girder and the concrete slab interface, interface stress distribution, and internal force of shear studs. Discontinuous deformation numerical simulation has been realized, and effectiveness of the proposed method and accuracy of the program were verified. Although shear stress was assumed to be transmitted by shear connector in the design stage, interface bonding and friction resistance can affect the force state of the shear connector. Results of this study can be used for detailed analysis and evaluation of the composite box-girder bridge without the need to rely on the constitutive laws of shear connectors obtained from push-out tests.

Three New 29 Carbon Skeletons Pentacyclic Triterpenoids and S-equol from Biogas Slurry

Jian-Feng Xu,Hui-Bin Wu,Ding-Cai Liu,Long Sha,Wen-Hui Wu,Hua Fan,Yishan Song,Hong-Guang Zhu 대한화학회 2015 Bulletin of the Korean Chemical Society Vol.36 No.12

Bioactive natural products were firstly obtained from biogas slurry. Three new 29 carbon skeletons of the pentacyclic triterpenoid compounds 24-norolean-12-ene-3,22-dione (1), 3β-hydroxy-24-norolean-12-ene-22-one (2), 3α-hydroxy-24-norolean-12-ene-22-one (3), as well as one known compound S-equol (4) were isolated and purified from the MeOH extract of chicken manure biogas slurry. The molecular structures of the four compounds were elucidated based on the extensive spectroscopic data analysis, and the structure of Compound 1 was further confirmed by single-crystal X-ray diffraction. The structures of Compounds 1, 2, and 3 are similar with oleanolicum and hederagenin that has excellent anti-tumor activities. The cytotoxicity against five cancer cell lines (Hela, A549, MCF7, PC3, and B16) of Compounds 1–4 was tested. Similar to Compound 4 (S-equol), Compounds 1–3 (pentacyclic triterpenoids) showed cytotoxicity activity against different tumor cell lines. Compounds 1–3 showed slightly lower cytotoxicity activities than Compound 4. The IC50 of Compound 4 was determined to be 9.7–27.6 μM, while the IC50 values of 1–3 were 17.6–65.3 μM. There are no significant differences in the cytotoxicity capacities between Compounds 1, 2, and 3.

Experimental and Simulation Study of PEMFC based on Ammonia Decomposition Gas as Fuel

Zhao, Jian Feng,Liang, Yi Fan,Liang, Qian Chaos,Li, Meng Jie,Hu, Jin Yi The Korean Electrochemical Society 2022 Journal of electrochemical science and technology Vol.13 No.1

Compared with hydrogen, ammonia has the advantages of high gravimetric hydrogen densities (17.8 wt.%), ease of storage and transportation as a chemical hydrogen storage medium, while its application in small-scale on-site hydrogen production scenarios is limited by the need for complex separation equipment during high purity hydrogen production. Therefore, the study of PEMFC, which can directly utilize ammonia decomposition gas, can greatly expand the application of fuel cells. In this paper, the output characteristics, fuel efficiency and the variation trend of hydrogen concentration and local current density in the anode channel of fuel cell with the output voltage of PEMFC fueled by ammonia decomposition gas were studied by experiment and simulation. The results indicate that the maximum output power of the hybrid fuel decreases by 9.6% compared with that of the pure hydrogen fuel at the same inlet hydrogen equivalent. When the molar concentration of hydrogen in the anode channel is less than 0.12, the output characteristics of PEMFC will be seriously affected. Employing ammonia decomposition gas as fuel, the efficiency corresponding to the maximum output power of PEMFC is approximately 47%, which is 10% lower than the maximum efficiency of pure hydrogen.

Dynamic Pricing Trading Market for Resources Sharing in IIU Federated Cloud

Tongrang Fan,Jian Liu,Feng Gao 보안공학연구지원센터(IJUNESST) 2013 International Journal of u- and e- Service, Scienc Vol.6 No.3

Antibacterial Activity of Organic Acids in Aqueous Extracts from Pine Needles (Pinus massoniana Lamb.)

Su Feng,Weicai Zeng,Fan Luo,Jian Zhao,Zhirong Yang,Qun Sun 한국식품과학회 2010 Food Science and Biotechnology Vol.19 No.1

Pine needle (Pinus massoniana Lamb.) of large quantity in China and health benefit makes its application on pharmaceutical and food industry in high demand. The chemical composition of pine needle aqueous extract (PNAE) analyzed by gas chromatograph-mass spectrometry revealed that among more than 10 compounds in PNAE,organic acids were over 76.92%, with acetic acid being 25.20%, hexadecanoic acid 18.19%, and 2-methoxy-4-vinylphenol 16.44%. Ultra-performance liquid chromatography-mass spectrometry disclosed other 5 short chain organic acids, including citric acid, succinic acid, malonic acid, malic acid, and oxalic acid. The antibacterial activity of PNAE on common spoilages and pathogenic bacteria showed that the growth of Bacillus subtilis, Staphylococcus aureus, Bacillus cereus, Micrococcus luteus, Escherichia coli, and Proteus vulgaris were inhibited significantly, with minimum inhibitory concentrations and minimum bactericidal concentrations being 3.8-15 and 7.5-30 mg/mL, respectively. Our findings suggested that pine needles with effective and safe antibacterial components possess the potential to be developed into efficacious natural antiseptic products for food disinfection and medical purpose.

Analysis of Geographic and Pairwise Distances among Chinese Cashmere Goat Populations

Liu, Jian-Bin,Wang, Fan,Lang, Xia,Zha, Xi,Sun, Xiao-Ping,Yue, Yao-Jing,Feng, Rui-Lin,Yang, Bo-Hui,Guo, Jian Asian Australasian Association of Animal Productio 2013 Animal Bioscience Vol.26 No.3

This study investigated the geographic and pairwise distances of nine Chinese local Cashmere goat populations through the analysis of 20 microsatellite DNA markers. Fluorescence PCR was used to identify the markers, which were selected based on their significance as identified by the Food and Agriculture Organization of the United Nations (FAO) and the International Society for Animal Genetics (ISAG). In total, 206 alleles were detected; the average allele number was 10.30; the polymorphism information content of loci ranged from 0.5213 to 0.7582; the number of effective alleles ranged from 4.0484 to 4.6178; the observed heterozygosity was from 0.5023 to 0.5602 for the practical sample; the expected heterozygosity ranged from 0.5783 to 0.6464; and Allelic richness ranged from 4.7551 to 8.0693. These results indicated that Chinese Cashmere goat populations exhibited rich genetic diversity. Further, the Wright's F-statistics of subpopulation within total (FST) was 0.1184; the genetic differentiation coefficient (GST) was 0.0940; and the average gene flow (Nm) was 2.0415. All pairwise FST values among the populations were highly significant (p<0.01 or p<0.001), suggesting that the populations studied should all be considered to be separate breeds. Finally, the clustering analysis divided the Chinese Cashmere goat populations into at least four clusters, with the Hexi and Yashan goat populations alone in one cluster. These results have provided useful, practical, and important information for the future of Chinese Cashmere goat breeding.

Profiling Gene Expression During Gland Morphogenesis of a Glanded and a Glandless Upland Cotton

Ying-Fan Cai,Min Chen,Quan Sun,Yong-Fang Xie,Sheng-Wei Li,Jian-Chuan Mo,Ming-Feng Jiang,You-Lu Yuan,Yu-Zhen Shi,Huai-Zhong Jiang,Zheng Pan,Yun-Ling Gao,Peng-Sheng Ye,Hua-Lan Zeng 한국식물학회 2009 Journal of Plant Biology Vol.52 No.6

The pigment gland is an important character of the Gossypium plant. With the aim of identifying genes involved in pigment gland morphogenesis in cotton, gene expression during pigment gland morphogenesis in Chuan 2802, which is glanded both in seed and plant, and a glandless line N5 was profiled using Affymetrix Cotton microarray. The results showed that there were 564 differentially expressed genes greater than twofold during gland morphogenesis. About 60.2% of these genes shares similarity with known genes on GenBank and about 39.8% with no functional description in the database. These described genes may play roles in defense response, response to oxidative stress, peroxidase activity, and the other metabolic pathways. The KEGG Orthology-Based Annotation System indicated that these above twofold expressed genes involved seven biochemical pathways on KEGG. These findings suggest that a complicated regulation is associated with pigment gland morphogenesis and the associated defense response including gossypol biosynthesis in cotton.