79 results on '"Cheng, Yi‐li"'
Search Results
2. Towards a Holistic Framework for Multimodal Large Language Models in Three-dimensional Brain CT Report Generation.
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Cheng-Yi Li, Kao-Jung Chang, Cheng-Fu Yang, Hsin-Yu Wu, Wenting Chen, Hritik Bansal, Ling Chen, Yi-Ping Yang, Yu-Chun Chen, Shih-Pin Chen, Jiing-Feng Lirng, Kai-Wei Chang, and Shih-Hwa Chiou
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- 2024
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3. Asclepius: A Spectrum Evaluation Benchmark for Medical Multi-Modal Large Language Models.
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Wenxuan Wang 0001, Yihang Su, Jingyuan Huan, Jie Liu 0044, Wenting Chen, Yudi Zhang 0005, Cheng-Yi Li, Kao-Jung Chang, Xiaohan Xin, Linlin Shen, and Michael R. Lyu
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- 2024
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4. Sustainable removal of soil arsenic by naturally-formed iron oxides on plastic tubes
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Yuan, Zhao-Feng, Pu, Tong-Yao, Jin, Chen-Yu, Feng, Wei-Jia, Wang, Jia-Yue, Gustave, Williamson, Bridge, Jonathan, Cheng, Yi-Li, Tang, Xian-Jin, Zhu, Yong-Guan, and Chen, Zheng
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- 2022
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5. Emerging connectivity of programmed cell death pathways and pulmonary vascular remodelling during pulmonary hypertension.
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Yuan, Meng‐nan, Liu, Ting, Cai, An‐qi, Zhan, Zibo, Cheng, Yi‐li, Wang, Qi‐yue, Xia, Yu‐xuan, Shen, Nong‐er, Huang, Ping, and Zou, Xiao‐zhou
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VASCULAR remodeling ,APOPTOSIS ,VASCULAR resistance ,PULMONARY hypertension ,PULMONARY artery - Abstract
Pulmonary hypertension (PH) is a chronic progressive vascular disease characterized by abnormal pulmonary vascular resistance and pulmonary artery pressure. The major structural alteration during PH is pulmonary vascular remodelling, which is mainly caused by the imbalance between proliferation and apoptosis of pulmonary vascular cells. Previously, it was thought that apoptosis was the only type of programmed cell death (PCD). Soon afterward, other types of PCD have been identified, including autophagy, pyroptosis, ferroptosis and necroptosis. In this review, we summarize the role of the above five forms of PCD in mediating pulmonary vascular remodelling, and discuss their guiding significance for PH treatment. The current review could provide a better understanding of the correlation between PCD and pulmonary vascular remodelling, contributing to identify new PCD‐associated drug targets for PH. [ABSTRACT FROM AUTHOR]
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- 2024
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6. Urban-rural differences in the prevalence and correlates of mild cognitive impairment in community-dwelling older adults in Taiwan: The EMCIT study
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Yi-Fang Chuang, Yi-Chien Liu, Hsin-Yi Tseng, Pei-Xuan Lin, Cheng-Yi Li, Ming-Hsiung Shih, Kuan-Chia Lin, TienYu Owen Yang, Sui-Hing Yan, and Yen-Ling Chiu
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Mild cognitive impairment ,Prevalence ,Epidemiology ,Rural population ,Medicine (General) ,R5-920 - Abstract
Background: Taiwan is a rapidly aging society. The elderly with mild cognitive impairment (MCI) have increased risk of dementia, and this is a population-based report using standard neuropsychological tests and expert consensus diagnosis to assess the MCI prevalence and its associated factors in Taiwan. Method: The Epidemiology of Mild Cognitive Impairment study in Taiwan (EMCIT) is a community-based, prospective cohort study. Independently-living individuals aged ≧60 years in a rural area (n = 122) and in an urban area (n = 348) of New Taipei City, Taiwan, completed detailed neuropsychological tests at the cohort baseline. Diagnosis of MCI was ascertained through expert consensus based on 2011 NIA-AA criteria. Results: Of 470 participants recruited between 2017 and 2019 (mean age 71.2 ± 5.4 years), the prevalence of MCI was higher in the rural area than in the urban area (25.1% vs. 10.8%, p
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- 2021
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7. Genetics behind Cerebral Disease with Ocular Comorbidity: Finding Parallels between the Brain and Eye Molecular Pathology
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Kao-Jung Chang, Hsin-Yu Wu, Aliaksandr A. Yarmishyn, Cheng-Yi Li, Yu-Jer Hsiao, Yi-Chun Chi, Tzu-Chen Lo, He-Jhen Dai, Yi-Chiang Yang, Ding-Hao Liu, De-Kuang Hwang, Shih-Jen Chen, Chih-Chien Hsu, and Chung-Lan Kao
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genome-wide association study ,phenome-wide association study ,genetic diagnosis ,pathology ,cerebral visual impairment ,multiple sclerosis ,Biology (General) ,QH301-705.5 ,Chemistry ,QD1-999 - Abstract
Cerebral visual impairments (CVIs) is an umbrella term that categorizes miscellaneous visual defects with parallel genetic brain disorders. While the manifestations of CVIs are diverse and ambiguous, molecular diagnostics stand out as a powerful approach for understanding pathomechanisms in CVIs. Nevertheless, the characterization of CVI disease cohorts has been fragmented and lacks integration. By revisiting the genome-wide and phenome-wide association studies (GWAS and PheWAS), we clustered a handful of renowned CVIs into five ontology groups, namely ciliopathies (Joubert syndrome, Bardet–Biedl syndrome, Alstrom syndrome), demyelination diseases (multiple sclerosis, Alexander disease, Pelizaeus–Merzbacher disease), transcriptional deregulation diseases (Mowat–Wilson disease, Pitt–Hopkins disease, Rett syndrome, Cockayne syndrome, X-linked alpha-thalassaemia mental retardation), compromised peroxisome disorders (Zellweger spectrum disorder, Refsum disease), and channelopathies (neuromyelitis optica spectrum disorder), and reviewed several mutation hotspots currently found to be associated with the CVIs. Moreover, we discussed the common manifestations in the brain and the eye, and collated animal study findings to discuss plausible gene editing strategies for future CVI correction.
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- 2022
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8. Learning Performance Evaluation in eLearning with the Web-Based Assessment.
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Cheng-Ying Yang, Tsai-Yuan Chung, Min-Shiang Hwang, Cheng-Yi Li, and Jenq-Foung J. F. Yao
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- 2017
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9. Direct Bilirubin Detection Using Surface-Enhanced Raman Spectroscopy
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Sandy Huey-Jen Hsu, Cheng-Chung Chang, Cheng-Yi Li, and Gou-Jen Wang
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Detection limit ,Reproducibility ,Materials science ,Analytical chemistry ,Substrate (electronics) ,Surface-enhanced Raman spectroscopy ,medicine.disease ,Fluorescence ,symbols.namesake ,Biliary atresia ,medicine ,symbols ,Electrical and Electronic Engineering ,Raman spectroscopy ,Instrumentation ,Raman scattering - Abstract
Biliary atresia is the most common cause of childhood liver disease and is the main cause of liver replacement. The use of an effective early screening technique can efficiently improve the therapeutic effect on children with biliary atresia, especially those in the remote rural areas. This study introduces a novel method for detecting direct bilirubin by Raman spectroscopy using composite surface-enhanced Raman spectroscopy (SERS) chips. These chips were created by spreading silver nanowires on the nanostructure surface of an anodic aluminum oxide substrate. Experimental results demonstrated that the detection limit of direct bilirubin concentration vastly improved far below the disease criteria of bilirubin in adults and infants. Meanwhile, using only $10~\mu \text{L}$ of direct bilirubin, a wide detection range from 10−7 to 10−4 M was obtained, covering the clinic reference range with R2 of 0.98336 at the peak value of 1.616 cm−1. Furthermore, the results revealed that the proposed composite SERS substrates possessed good statistical relative standard deviation and reproducibility (N = 3) of 4.6% and 2.2%, respectively. Thus, the composite SERS chip combined with the Raman spectroscopy approach can be integrated with portable Raman spectrometer for the effective clinical detection of direct bilirubin.
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- 2021
10. [Effect of Nitrogen Addition on Soil Fungal Diversity in a Degraded Alpine Meadow at Different Slopes]
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Xiao-Xue, Su, Xi-Lai, Li, Cheng-Yi, Li, and Hua-Fang, Sun
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Soil ,Bacteria ,Nitrogen ,Grassland ,Soil Microbiology ,Mycobiome - Abstract
This study proposed nitrogen addition experiments to analyze the effects of exogenous nitrogen addition on soil fungal diversity in alpine meadow. All the experiments were performed in degraded alpine meadow with two different slopes (gentle slope and steep slope) in Guoluo Prefecture of the Sanjiangyuan Region, and the sequence and analysis of ITS of soil fungi were performed using MiSeq PE250 sequencing technology. Comparative analysis was carried out with three nitrogen addition levels on soil fungal diversity in degraded grassland with different slopes, which included low nitrogen (LN, 2 g·m
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- 2022
11. Urban-rural differences in the prevalence and correlates of mild cognitive impairment in community-dwelling older adults in Taiwan: The EMCIT study
- Author
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Yen-Ling Chiu, Sui Hing Yan, Hsin Yi Tseng, Ming Hsiung Shih, Yi Fang Chuang, Kuan Chia Lin, Tien Yu Owen Yang, Yi Chien Liu, Cheng Yi Li, and Pei Xuan Lin
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Male ,Gerontology ,medicine.medical_specialty ,Medicine (General) ,Epidemiology ,Population ,Taiwan ,Neuropsychological Tests ,03 medical and health sciences ,0302 clinical medicine ,R5-920 ,Risk Factors ,medicine ,Prevalence ,Humans ,Dementia ,Cognitive Dysfunction ,Prospective Studies ,Prospective cohort study ,education ,Depression (differential diagnoses) ,Aged ,education.field_of_study ,business.industry ,Neuropsychology ,Mild cognitive impairment ,General Medicine ,medicine.disease ,030220 oncology & carcinogenesis ,Cohort ,Rural population ,030211 gastroenterology & hepatology ,Independent Living ,Rural area ,business - Abstract
Background: Taiwan is a rapidly aging society. The elderly with mild cognitive impairment (MCI) have increased risk of dementia, and this is a population-based report using standard neuropsychological tests and expert consensus diagnosis to assess the MCI prevalence and its associated factors in Taiwan. Method: The Epidemiology of Mild Cognitive Impairment study in Taiwan (EMCIT) is a community-based, prospective cohort study. Independently-living individuals aged ≧60 years in a rural area (n = 122) and in an urban area (n = 348) of New Taipei City, Taiwan, completed detailed neuropsychological tests at the cohort baseline. Diagnosis of MCI was ascertained through expert consensus based on 2011 NIA-AA criteria. Results: Of 470 participants recruited between 2017 and 2019 (mean age 71.2 ± 5.4 years), the prevalence of MCI was higher in the rural area than in the urban area (25.1% vs. 10.8%, p
- Published
- 2021
12. [Changes in Soil Bacterial Community Diversity in Degraded Patches of Alpine Meadow in the Source Area of the Yellow River]
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Hua-Fang, Sun, Xi-Lai, Li, Li-Qun, Jin, Yu-Rong, Zhao, Cheng-Yi, Li, Jing, Zhang, Zi-Han, Song, Xiao-Xue, Su, and Kai, Liu
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Soil ,Bacteria ,Rivers ,Nitrogen ,Grassland ,Soil Microbiology - Abstract
MiSeq sequencing technology was used to investigate the bacterial compositions and diversities of active patch, non-active patch, recovered patch, and healthy alpine meadows so as to understand the changes in soil bacterial community diversity during altitude change and alpine meadow degradation. The relationship between bacterial diversity and environmental factors was analyzed using redundancy analysis (RDA). The results showed that the dominant bacterial phyla in the soil included Proteobacteria, Actinobacteriota, and Acidobacteriota in the study areas. The dominant bacterial genera that were identified via the MiSeq were
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- 2022
13. Genetics behind Cerebral Disease with Ocular Comorbidity: Finding Parallels between the Brain and Eye Molecular Pa-thology
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Kao-Jung Chang, Hsin-Yu Wu, Aliaksandr Yarmishyn, Cheng-Yi Li, Yu-Jer Hsiao, Yi-Chun Chi, Tzu-Chen Lo, He-Jhen Dai, Yi-Chiang Yang, Ding-Hao Liu, De-Kuang Hwang, Shih-Jen Chen, Chih-Chien Hsu, and Chung-Lan Kao
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Neuromyelitis Optica ,Organic Chemistry ,Comorbidity ,General Medicine ,Catalysis ,Computer Science Applications ,Inorganic Chemistry ,Cerebellum ,Animals ,Pathology, Molecular ,Physical and Theoretical Chemistry ,Bardet-Biedl Syndrome ,Molecular Biology ,Spectroscopy - Abstract
Table S1: Pathomechanics of Joubert Syndrome Table S2: Pathomechanics of Bardet Biedl Syndrome Table S3: Pathomechanics of Neuromyelitis Optica Spectrum Disorder, Genome-wide association study; Phenome-wide association study; Genetic diagnosis; Molecular mechanisms; Cerebral visual impairment; Multiple sclerosis; Joubert syndrome; Mowat Wilson disease; Zellweger spectrum disorder; Neuromyelitis optica spectrum disorder
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- 2022
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14. The Grading of Prostatic Cancer in Biopsy Image Based on Two Stages Approach.
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Shao-Kuo Tai, Cheng-Yi Li, Yee-Jee Jan, and Shu-Chuan Lin
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- 2010
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15. Design of Wireless Sensor Networks with Filtering Duplicate Audio Signals.
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Ning-Han Liu, Cheng-Yi Li, and Shu-Ju Hsieh
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- 2009
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16. Effects of degradation succession of alpine wetland on soil organic carbon and total nitrogen in the Yellow River source zone, west China
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Cheng-yi Li, Jing Zhang, Hua-fang Sun, Juan Zhang, Yu-xing Zhang, Chun-ying Lin, Xilai Li, Xue-qian Ma, Hui-bang Han, Cheng-biao Ma, and Qi-hua Wang
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Total organic carbon ,Hydrology ,Global and Planetary Change ,geography ,Topsoil ,geography.geographical_feature_category ,Marsh ,010504 meteorology & atmospheric sciences ,Geography, Planning and Development ,Geology ,Wetland ,Soil carbon ,Ecological succession ,010502 geochemistry & geophysics ,01 natural sciences ,Soil water ,Soil horizon ,Environmental science ,0105 earth and related environmental sciences ,Nature and Landscape Conservation ,Earth-Surface Processes - Abstract
Wetland is an important carbon pool, and the degradation of wetlands causes the loss of organic carbon and total nitrogen. This study aims to explore how wetland degradation succession affects soil organic carbon (SOC) and total nitrogen (TN) contents in alpine wetland. A field survey of 180 soil-sampling profiles was conducted in an alpine wetland that has been classified into three degradation succession stages. The SOC and TN contents of soil layers from 0 to 200 cm depth were studied, including their distribution characteristics and the relationship between soil water content (SWC) and microtopography. The results showed that SOC and TN of different degradation succession gradients followed the ranked order of Non Degradation (ND) > Light Degradation (LD) > Heavy Degradation (HD). SWC was positively correlated with SOC and TN (p
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- 2021
17. Spatial Distribution of Anopheles sinensis and Its Relationship with Natural Environmental Factors in Wanning County on Hainan Island, China
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Wenyi Zhang, Shenlong Li, Qinghua Li, Shaowen Weng, Minghe Lin, Liang Wen, Cheng-Yi Li, Chenyi Chu, and Yong Wang
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business.industry ,Ecology ,Range (biology) ,ved/biology ,ved/biology.organism_classification_rank.species ,Distribution (economics) ,Disease cluster ,Spatial distribution ,Spatial heterogeneity ,Anopheles sinensis ,Geography ,parasitic diseases ,China ,business - Abstract
Anopheles sinensis is widely distributed in Wanning County, it is necessary to understand the spatial distribution characteristics of Anopheles sinensis in order to maintain the elimination of malaria in Wanning. During May and October 2009, we sampled adult mosquitoes at 36 villages within Wanning County on Hainan island, and collected meteorological and geographical data at each sampling site. We used these data to analyze the spatial distribution of adult Anopheles sinensis mosquitoes, and logistic regression analysis was applied to explore the association of the spatial distribution of Anopheles sinensis with the geographical and meteorological factors. We found that the density of Anopheles sinensis showed a significant positive spatial correlation. From May to October, on the whole, the high-density area was located in the central part of Wanning County. But each month there was a relatively high-density cluster, and their location and range were not exactly the same. From east to west, the density of Anopheles sinensis increased initially and then decreased, but from south to north, there were different trends in the periods of May to August and September to October. Logistic regression analysis showed that the main environmental factors related with the distribution of Anopheles sinensis were land use type, soil type, distance to road, air pressure and relative humidity. These analysis results showed that the distribution of Anopheles sinensis had obvious spatial heterogeneity in Wanning County, which was related with geographical and meteorological factors. The mechanism of these environmental factors on the distribution of Anopheles sinensis needs to be further studied.
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- 2021
18. Seismic performance assessments of naturally buckling braced frame building structures
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Po-Chien Hsiao and Cheng-Yi Li
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Mechanics of Materials ,Architecture ,Building and Construction ,Safety, Risk, Reliability and Quality ,Civil and Structural Engineering - Published
- 2023
19. Long-term Audio Observation by Wireless Sensor Networks with Filtering Strategies.
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Ning-Han Liu, Cheng-Yi Li, Shu-Ju Hsieh, Cheng-Fa Tsai, and Min-Hua Shao
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- 2011
20. Design and Implementation of Intelligent Automated Production-Line Control System
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Cheng-Yi Li, Hsu Hung-Yu, Jun-Yi Yang, and Jeng-Dao Lee
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Production line ,IoT ,TK7800-8360 ,Computer Networks and Communications ,Computer science ,business.industry ,media_common.quotation_subject ,Control (management) ,graphical control ,process control ,Process automation system ,Control flow ,Hardware and Architecture ,Control and Systems Engineering ,Control system ,Embedded system ,Signal Processing ,communication integration ,Process control ,Electrical and Electronic Engineering ,User interface ,Electronics ,business ,Function (engineering) ,media_common - Abstract
Owing to the different consumption habits of people, the market has rapidly changed, and customized demands have increased in recent years. This issue has led to the need for manufacturing industry to improve their production-process automation system control to become faster and more flexible. An intelligent automated production-line control system (IAPLCS) is proposed in this study, in which a graphic control system (GCS) is designed to integrate equipment communications in automated production. This system runs complex packaged programs for function blocks, which enable users to easily build function blocks in GCS. Users can plan the control flow of the system to control the machine operation. Not only is a web interface set in the IAPLCS, which makes it easier for users to operate and monitor, but also Internet-of-Things (IoT) sensors can be added for data collection and analysis based on the characteristics of the production line and equipment. Finally, the proposed control system was implemented in an actual production line to verify its feasibility.
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- 2021
21. ATP-Binding Cassette Transporter VcaM from Vibrio cholerae is Dependent on the Outer Membrane Factor Family for Its Function
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Wen-Jung Lu, Hsuan-Ju Lin, Thamarai K. Janganan, Cheng-Yi Li, Wei-Chiang Chin, Vassiliy N. Bavro, and Hong-Ting Victor Lin
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ATP-binding cassette transporter ,VcaM ,V. cholerae ,TolC ,multidrug efflux pumps ,Biology (General) ,QH301-705.5 ,Chemistry ,QD1-999 - Abstract
Vibrio cholerae ATP-binding cassette transporter VcaM (V. cholerae ABC multidrug resistance pump) has previously been shown to confer resistance to a variety of medically important drugs. In this study, we set to analyse its properties both in vitro in detergent-solubilised state and in vivo to differentiate its dependency on auxiliary proteins for its function. We report the first detailed kinetic parameters of purified VcaM and the rate of phosphate (Pi) production. To determine the possible functional dependencies of VcaM on the tripartite efflux pumps we then utilized different E. coli strains lacking the principal secondary transporter AcrB (Acriflavine resistance protein), as well as cells lacking the outer membrane factor (OMF) TolC (Tolerance to colicins). Consistent with the ATPase function of VcaM we found it to be susceptible to sodium orthovanadate (NaOV), however, we also found a clear dependency of VcaM function on TolC. Inhibitors targeting secondary active transporters had no effects on either VcaM-conferred resistance or Hoechst 33342 accumulation, suggesting that VcaM might be capable of engaging with the TolC-channel without periplasmic mediation by additional transporters. Our findings are indicative of VcaM being capable of a one-step substrate translocation from cytosol to extracellular space utilising the TolC-channel, making it the only multidrug ABC-transporter outside of the MacB-family with demonstrable TolC-dependency.
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- 2018
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22. Geographic Co-distribution of Influenza Virus Subtypes H7N9 and H5N1 in Humans, China
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Liya Wang, Wenyi Zhang, Ricardo J. Soares Magalhaes, Archie C.A. Clements, Wenbiao Hu, Fan Ding, Hailong Sun, Shenlong Li, Qiyong Liu, Zeliang Chen, Yansong Sun, Liuyu Huang, and Cheng-Yi Li
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geographic co-distribution ,influenza ,subtypes ,H7N9 ,H5N1 ,humans ,Medicine ,Infectious and parasitic diseases ,RC109-216 - Published
- 2013
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23. [Responses of Different Degradation Stages of Alpine Wetland on Soil Microbial Community in the Yellow River Source Zone]
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Chun-Ying, Lin, Xi-Lai, Li, Yu-Xin, Zhang, Hua-Fang, Sun, Cheng-Yi, Li, Li-Qun, Jin, Xin-Guang, Yang, and Kai, Liu
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China ,Soil ,Rivers ,Nitrogen ,Microbiota ,Wetlands ,Carbon ,Soil Microbiology - Abstract
MiSeq sequencing technology was used to analyze the microbial community diversity of soil in alpine wetlands to understand the degradation processes and environmental factors in these areas. The results showed that the severity of soil degradation changed the species diversity of soil microorganisms at the level of OTUs, and grass patches contained more species than frozen-thawing patches. The soil fungi species of OTUs changed significantly. The diversity indexes of bacteria (between the frozen-thawing patches and the grass patches) were higher than that of fungi. The dominant microbial species were consistent among different degradation stages. The dominant species of bacteria and fungi were Proteobacteria and RB41, and Ascomycota and
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- 2021
24. Non-Enzymatic and Electrodeless Detection of Direct Bilirubin Using Metal Enhanced Fluorescence Effect
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Gou-Jen Wang, Chang-I Peng, Cheng-Chung Chang, Sandy Huey-Jen Hsu, and Cheng-Yi Li
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Metal ,chemistry.chemical_classification ,Enzyme ,Non enzymatic ,Chemistry ,visual_art ,Nanowire ,visual_art.visual_art_medium ,Direct bilirubin ,Photochemistry ,Fluorescence - Abstract
In this study, a metal enhanced fluorescence (MEF) approach using the homemade Ag nanowires for enzyme free and electrodeless detection of direct bilirubin (d-BLR) was successfully developed. The average diameter and length of the fabricated Ag nanowires were measured to be around 80 nm and 25 μm, respectively. Solvent effect experiments found that EtOH is more suitable as the solvent for d-BLR. The experimental results found that the linear detection range is from 1 to 10 μM, which can be used for detecting abnormal d-BLR concentration from 5 to 10 μM. The MEF approach not only enhanced the bilirubin fluorescence, but also improved the linearity of the standard curve. Furthermore, we also found that the fluorescence intensity of the chip-based MEF is much higher than that of the solution-based MEF. It is believed that the proposed enzyme free and electrodeless d-BLR detection platform is highly feasible for clinical applications.
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- 2021
25. Spatiotemporal Clustering Analysis and Risk Assessments of Human Cutaneous Anthrax in China, 2005-2012.
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Wen-Yi Zhang, Li-Ya Wang, Xiu-Shan Zhang, Zhi-Hai Han, Wen-Biao Hu, Quan Qian, Ubydul Haque, Ricardo J Soares Magalhaes, Shen-Long Li, Shi-Lu Tong, Cheng-Yi Li, Hai-Long Sun, and Yan-Song Sun
- Subjects
Medicine ,Science - Abstract
To investigate the epidemic characteristics of human cutaneous anthrax (CA) in China, detect the spatiotemporal clusters at the county level for preemptive public health interventions, and evaluate the differences in the epidemiological characteristics within and outside clusters.CA cases reported during 2005-2012 from the national surveillance system were evaluated at the county level using space-time scan statistic. Comparative analysis of the epidemic characteristics within and outside identified clusters was performed using using the χ2 test or Kruskal-Wallis test.The group of 30-39 years had the highest incidence of CA, and the fatality rate increased with age, with persons ≥70 years showing a fatality rate of 4.04%. Seasonality analysis showed that most of CA cases occurred between May/June and September/October of each year. The primary spatiotemporal cluster contained 19 counties from June 2006 to May 2010, and it was mainly located straddling the borders of Sichuan, Gansu, and Qinghai provinces. In these high-risk areas, CA cases were predominantly found among younger, local, males, shepherds, who were living on agriculture and stockbreeding and characterized with high morbidity, low mortality and a shorter period from illness onset to diagnosis.CA was geographically and persistently clustered in the Southwestern China during 2005-2012, with notable differences in the epidemic characteristics within and outside spatiotemporal clusters; this demonstrates the necessity for CA interventions such as enhanced surveillance, health education, mandatory and standard decontamination or disinfection procedures to be geographically targeted to the areas identified in this study.
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- 2015
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26. Spatiotemporal transmission dynamics of hemorrhagic fever with renal syndrome in China, 2005-2012.
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Wen-Yi Zhang, Li-Ya Wang, Yun-Xi Liu, Wen-Wu Yin, Wen-Biao Hu, Ricardo J Soares Magalhaes, Fan Ding, Hai-Long Sun, Hang Zhou, Shen-Long Li, Ubydul Haque, Shi-Lu Tong, Gregory E Glass, Peng Bi, Archie C A Clements, Qi-Yong Liu, and Cheng-Yi Li
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Arctic medicine. Tropical medicine ,RC955-962 ,Public aspects of medicine ,RA1-1270 - Abstract
Hemorrhagic fever with renal syndrome (HFRS) is a rodent-borne disease caused by many serotypes of hantaviruses. In China, HFRS has been recognized as a severe public health problem with 90% of the total reported cases in the world. This study describes the spatiotemporal dynamics of HFRS cases in China and identifies the regions, time, and populations at highest risk, which could help the planning and implementation of key preventative measures.Data on all reported HFRS cases at the county level from January 2005 to December 2012 were collected from Chinese Center for Disease Control and Prevention. Geographic Information System-based spatiotemporal analyses including Local Indicators of Spatial Association and Kulldorff's space-time scan statistic were performed to detect local high-risk space-time clusters of HFRS in China. In addition, cases from high-risk and low-risk counties were compared to identify significant demographic differences.A total of 100,868 cases were reported during 2005-2012 in mainland China. There were significant variations in the spatiotemporal dynamics of HFRS. HFRS cases occurred most frequently in June, November, and December. There was a significant positive spatial autocorrelation of HFRS incidence during the study periods, with Moran's I values ranging from 0.46 to 0.56 (P
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- 2014
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27. Sustainable removal of soil arsenic by naturally-formed iron oxides on plastic tubes
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Yuan, Zhao-Feng, primary, Pu, Tong-Yao, additional, Jin, Chen-Yu, additional, Feng, Wei-Jia, additional, Wang, Jia-Yue, additional, Gustave, Williamson, additional, Bridge, Jonathan, additional, Cheng, Yi-Li, additional, Tang, Xianjin, additional, Zhu, Yong-Guan, additional, and Chen, Zheng, additional
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- 2021
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28. Quarantine Methods and Prevention of Secondary Outbreak of Pandemic (H1N1) 2009
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Chen-Yi Chu, Cheng-Yi Li, Hui Zhang, Yong Wang, Dong-Hui Huo, Liang Wen, Zhi-Tao Yin, Shao-Lun Zhai, and Hong-Bin Song
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Outbreak ,pandemic (H1N1) 2009 ,influenza ,viruses ,quarantine ,isolation ,Medicine ,Infectious and parasitic diseases ,RC109-216 - Abstract
During the 2009 influenza (H1N1) pandemic, some countries used quarantine for containment or mitigation. Of 152 quarantined university students we studied, risk for illness was higher for students quarantined in a room with a person with a confirmed case; we found no difference between students quarantined in double or single rooms.
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- 2010
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29. Spatiotemporal patterns of Japanese encephalitis in China, 2002-2010.
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Li-Ya Wang, Wen-Yi Zhang, Fan Ding, Wen-Biao Hu, Ricardo J Soares Magalhaes, Hai-Long Sun, Yi-Xing Li, Wen Zou, Yong Wang, Qi-Yong Liu, Shen-Long Li, Wen-Wu Yin, Liu-Yu Huang, Archie C A Clements, Peng Bi, and Cheng-Yi Li
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Arctic medicine. Tropical medicine ,RC955-962 ,Public aspects of medicine ,RA1-1270 - Abstract
OBJECTIVE: The aim of the study is to examine the spatiotemporal pattern of Japanese Encephalitis (JE) in mainland China during 2002-2010. Specific objectives of the study were to quantify the temporal variation in incidence of JE cases, to determine if clustering of JE cases exists, to detect high risk spatiotemporal clusters of JE cases and to provide evidence-based preventive suggestions to relevant stakeholders. METHODS: Monthly JE cases at the county level in mainland China during 2002-2010 were obtained from the China Information System for Diseases Control and Prevention (CISDCP). For the purpose of the analysis, JE case counts for nine years were aggregated into four temporal periods (2002; 2003-2005; 2006; and 2007-2010). Local Indicators of Spatial Association and spatial scan statistics were performed to detect and evaluate local high risk space-time clusters. RESULTS: JE incidence showed a decreasing trend from 2002 to 2005 but peaked in 2006, then fluctuated over the study period. Spatial cluster analysis detected high value clusters, mainly located in Southwestern China. Similarly, we identified a primary spatiotemporal cluster of JE in Southwestern China between July and August, with the geographical range of JE transmission increasing over the past years. CONCLUSION: JE in China is geographically clustered and its spatial extent dynamically changed during the last nine years in mainland China. This indicates that risk factors for JE infection are likely to be spatially heterogeneous. The results may assist national and local health authorities in the development/refinement of a better preventive strategy and increase the effectiveness of public health interventions against JE transmission.
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- 2013
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30. Scrub typhus in mainland China, 2006-2012: the need for targeted public health interventions.
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Wen-Yi Zhang, Li-Ya Wang, Fan Ding, Wen-Biao Hu, Ricardo J Soares Magalhaes, Hai-Long Sun, Yun-Xi Liu, Qi-Yong Liu, Liu-Yu Huang, Archie C A Clements, Shen-Long Li, and Cheng-Yi Li
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Arctic medicine. Tropical medicine ,RC955-962 ,Public aspects of medicine ,RA1-1270 - Published
- 2013
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31. [Study on low temperature moisture regain drying characteristics of different grades of Angelicae Sinensis Radix based on Weibull distribution function]
- Author
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Bo, Li, Zheng-Ze, Qiang, Jun-Gang, He, Jun-Wen, Zhang, Cheng-Yi, Li, and Gui-Sen, Zheng
- Subjects
Cold Temperature ,Angelica sinensis ,Temperature ,Desiccation ,Plant Roots ,Drugs, Chinese Herbal - Abstract
The drying process of different grades of Angelicae Sinensis Radix under low temperature and resurgence conditions was simulated based on the Weibull distribution function,in order to clarify the low-temperature moisture regain drying characteristics of different grades of Angelicae Sinensis Radix,and explore the effect of grade and drying conditions on the drying process of Angelicae Sinensis Radix. Research results indicated that the Weibull function can be used to simulate different grades of Angelicae Sinensis Radix low-temperature moisture regain drying process,and the lower the drying temperature,the smaller the grade,and the better the simulation effect. The grade and drying temperature showed a significant effect on the low-temperature moisture regain drying process of Angelicae Sinensis Radix,and the effect of temperature on the relative moisture regain rate of Angelicae Sinensis Radix was greater than the grade. The relative moisture regain rate of different grades of Angelicae Sinensis Radix at 40 ℃ was higher than 55 ℃,and the relative moisture regain rate at 40 ℃ was first classsecond classthird class. After drying,the moisture ratio at 40 ℃ was lower than that at 55 ℃; the effect of the grade on the effective diffusion coefficient of dry water was greater than the temperature. Under different conditions of 40 ℃ and 55 ℃ moisture regain,the effective diffusion coefficient of water was between 2. 941 6×10
- Published
- 2019
32. Toward Low-Temperature Coal Gasification: Experimental and Numerical Studies of Thermochemical Coal Conversion Considering the Interactions between Volatiles and Char Particles
- Author
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Shinji Kudo, Li Xin Zhang, Jun Ichiro Hayashi, Cheng Yi Li, and Koyo Norinaga
- Subjects
Materials science ,Waste management ,business.industry ,020209 energy ,General Chemical Engineering ,General Engineering ,Coal conversion ,02 engineering and technology ,General Chemistry ,020401 chemical engineering ,0202 electrical engineering, electronic engineering, information engineering ,Coal gasification ,General Materials Science ,Char ,0204 chemical engineering ,Process engineering ,business - Published
- 2017
33. [Study on history of processing and drying of Angelicae sinensis]
- Author
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Bo, Li, Zheng-Ze, Qiang, and Cheng-Yi, Li
- Subjects
Angelica sinensis ,Desiccation ,Drugs, Chinese Herbal - Abstract
Angelicae sinensis Radix( ASR) is a commonly used medicinal material in Chinese medicine,widely used in clinical practice of Chinese medicine,Gansu province is the genuine production area of ASR. This paper studies the evolution law of drying method of ASR,the results showed that drying process was the key affection of the medicinal properties and quality of ASR,and it was an important reflection of the authentic properties of ASR. The drying history of ASR has gradually changed from the earliest shade drying to various drying methods. The Chinese Pharmacopoeia stipulates that the drying method of ASR is"fumigation drying",and the traditional drying method can not meet the processing needs of the origin. In recent years,the new drying methods and drying effects on the quality of ASR are more.
- Published
- 2019
34. Implementation of Automated Gluing and Assembly Workstation
- Author
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Chang Chen-Huan, Jeng-Dao Lee, Chia-Ying Hsieh, Ying-Jie Jhao, Li Wei-Chuan, and Cheng-Yi Li
- Subjects
Production line ,Workstation ,business.industry ,Computer science ,law ,business ,Automation ,Robotic arm ,Field (computer science) ,Process line ,Manufacturing engineering ,Visualization ,law.invention - Abstract
According to industry4.0, every different field not only factories but companies are achieving the goal of intelligence manufacturing and going to be transformation to promote their competition. Therefore, system provider firstly put forward upgrading automation production line. After this condition, it could achieve the goal on optimization and efficiency. In order to realize planning and designing of automation manufacturing, it established an automation checking with visualization and use robotic arms to glue and assemble on our workstation. In the end, we achieve the planning and designing of automation manufacturing unit. This working station could produce in automation process line.
- Published
- 2018
35. Modeling of gas/particle flow in coal conversion with a drop tube reactor using a lumped kinetic model accounting volatiles–char interaction
- Author
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Shinji Kudo, An Ni Huang, Jun Ichiro Hayashi, Hsiu-Po Kuo, Srinivas Appari, Li Xin Zhang, Cheng Yi Li, and Koyo Norinaga
- Subjects
Wood gas generator ,business.industry ,Chemistry ,General Chemical Engineering ,Nuclear engineering ,Energy Engineering and Power Technology ,Tar ,Partial pressure ,medicine.disease_cause ,Soot ,Fuel Technology ,Chemical Engineering(all) ,medicine ,Combustor ,Coal ,Char ,Downer ,business - Abstract
Coal conversion including reforming of nascent tar over the char surface in a drop tube reactor (DTR) was studied both experimentally and numerically. Victorian brown coal and char prepared from the same coal were co-fed into an atmospheric DTR. The effects of reaction temperature (973–1173 K), solid hold-up (8.31 × 10− 6–2.50 × 10− 4), residence time (0–4.6 s for gas; 0–0.78 s for solid particles), and steam partial pressure (0–0.05 MPa) on the conversion characteristics were investigated. A 4-lump kinetic model consisting of tar, gases, char, and soot with 6 global reactions was developed based on the experimental results. The lumped kinetic model was integrated with a computational fluid dynamics (CFD) simulation using an Eulerian–Eulerian approach for mixed phase flow to simulate the coal conversion experiments in the DTR. The CFD results for product distribution during coal conversion in the DTR showed reasonable agreement with the experimental results. The CFD approach presented is suitable for use in designing and optimizing a pyrolyzer for a triple-bed combined circulating fluidized-bed coal gasifier, consisting of a downer (pyrolyzer), a bubbling fluidized bed (gasifier), and a riser (combustor).
- Published
- 2015
36. The role of environmental factors in the spatial distribution of Japanese encephalitis in mainland China
- Author
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Ricardo J. Soares Magalhães, Wenyi Zhang, Yansong Sun, Shilu Tong, Wenbiao Hu, Fan Ding, Shenlong Li, Lan Wei, Hailong Sun, Liu-Yu Huang, Peng Bi, Qiyong Liu, Ubydul Haque, Wenwu Yin, Cheng-Yi Li, Archie C. A. Clements, and Li-Ya Wang
- Subjects
Risk ,Mainland China ,lcsh:GE1-350 ,China ,medicine.medical_specialty ,Public health ,Viral encephalitis ,Temperature ,Environment ,Japanese encephalitis ,medicine.disease ,Population density ,law.invention ,Environmental niche modelling ,Transmission (mechanics) ,Geography ,law ,medicine ,Humans ,Encephalitis, Japanese ,lcsh:Environmental sciences ,General Environmental Science ,Demography - Abstract
Japanese encephalitis (JE) is the most common cause of viral encephalitis and an important public health concern in the Asia-Pacific region, particularly in China where 50% of global cases are notified. To explore the association between environmental factors and human JE cases and identify the high risk areas for JE transmission in China, we used annual notified data on JE cases at the center of administrative township and environmental variables with a pixel resolution of 1 km × 1 km from 2005 to 2011 to construct models using ecological niche modeling (ENM) approaches based on maximum entropy. These models were then validated by overlaying reported human JE case localities from 2006 to 2012 onto each prediction map. ENMs had good discriminatory ability with the area under the curve (AUC) of the receiver operating curve (ROC) of 0.82–0.91, and low extrinsic omission rate of 5.44–7.42%. Resulting maps showed JE being presented extensively throughout southwestern and central China, with local spatial variations in probability influenced by minimum temperatures, human population density, mean temperatures, and elevation, with contribution of 17.94%–38.37%, 15.47%–21.82%, 3.86%–21.22%, and 12.05%–16.02%, respectively. Approximately 60% of JE cases occurred in predicted high risk areas, which covered less than 6% of areas in mainland China. Our findings will help inform optimal geographical allocation of the limited resources available for JE prevention and control in China, find hidden high-risk areas, and increase the effectiveness of public health interventions against JE transmission. Keywords: Japanese encephalitis, Ecological niche model, MaxEnt, China
- Published
- 2014
37. Learning Performance Evaluation in eLearning with the Web-Based Assessment
- Author
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Jenq-Foung \\'Jf\\' Yao, Cheng-Yi Li, Cheng-Ying Yang, Tsai-Yuan Chung, and Min-Shiang Hwang
- Subjects
business.industry ,Computer science ,Learning environment ,05 social sciences ,Traditional classroom ,050301 education ,Formative assessment ,Summative assessment ,Statistical analyses ,ComputingMilieux_COMPUTERSANDEDUCATION ,Mathematics education ,The Internet ,0509 other social sciences ,050904 information & library sciences ,business ,0503 education - Abstract
With the prevalence of Internet, eLearning provides a platform for education that enables students to take classes online. While eLearning provides a flexible learning environment, it also has drawbacks. This research investigated the potential benefit of the proposed method in an informal formative web-based assessment. The data were collected from college students in three separated groups. The statistical analyses showed mixed results. Some possible reasons were discussed along with other methods that could be further explored in the future.
- Published
- 2017
38. Solvothermal Method Preparation of Nano Y2O2S:Eu3+ and Research of Luminescence Property and Cytotoxicity
- Author
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Y. Li, Cheng Yi Li, Yi Li, Lu Lu, Yi Zhou Du, and Zhi Long Wang
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Materials science ,White powder ,General Engineering ,Analytical chemistry ,Nanoparticle ,Solvent ,Rhodamine ,chemistry.chemical_compound ,chemistry ,Cell toxicity ,Nano ,Luminescence ,Cytotoxicity ,Nuclear chemistry - Abstract
Series sample were prepared with solvothermal method using ethylene-diomine as solvent, at 220°C for 24h. All samples are white powder and XRD proofs that all of them are single phases. Using the Laser granularity cryoscopy (rise 2008) to measure the samples size , and most samples sizes are from 150nm to 200nm. SEM photo shows that the Y2O2S:Eu3+morphologies are spherical but have some aggregation. And Y2O2S:Eu3+has a better a anti-decay property compared with Rhodamine B. The Cell toxicity test (MTT) shows that when concentration range in 20-80mg/ml, the cytotoxicity of sample is relatively small ,but as a good bio-marker materials in tumors diagnosis , its toxicity is still high.
- Published
- 2013
39. Liquid-Phase Method Preparation of Water-Soluble ZnS:Cu2+ Nanoparticles and Luminous Performance Research
- Author
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Zhi Long Wang, Xin Yuan Zhang, Xu Sheng Zhang, Yi Zhou Du, Yan Liang, Li Jiao Wei, Yi Li, and Cheng Yi Li
- Subjects
chemistry.chemical_compound ,Absorption spectroscopy ,Surface-area-to-volume ratio ,Chemistry ,General Engineering ,Analytical chemistry ,Nanoparticle ,Particle size ,Thioglycolic acid ,Emission spectrum ,Absorption (chemistry) ,Ion - Abstract
Series samples ZnS: Cu2+ have been prepared by Liquid-phase method and the final productivity has a great improvement compared with traditional method. Different concentration thioglycolic acid (TGA) modified combining nanoparticle makes water soluble ability better. When precipitating agent water and ethanol volume ratio is 3:1, sample production rate is the highest. Under XRD theoretical calculation ,the size of the series of samples are about 16nm , and the sample size is 18 nm while using Laser Particle Size Analyzers(Rise - 2208)measured. Series sample shows strong absorption under 200 nm to 340 nm range. Through absorption spectrum calculating the forbidden band width is about 3.58 eV. Under 210 nm of excitation, the emission spectrum shows that the strongest peak locates in 425 nm which belongs to Cu2 + ions’ t2 transition.
- Published
- 2013
40. Word form encoding in Chinese word naming and word typing
- Author
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Jenn Yeu Chen and Cheng Yi Li
- Subjects
China ,Linguistics and Language ,Cognitive Neuroscience ,media_common.quotation_subject ,Speech recognition ,Experimental and Cognitive Psychology ,Vocabulary ,Language and Linguistics ,Encoding specificity principle ,Asian People ,Phonetics ,Reaction Time ,Developmental and Educational Psychology ,Humans ,Language ,media_common ,Rhyme ,Stimulus onset asynchrony ,Phonology ,Linguistics ,Pattern Recognition, Visual ,Reading ,Word recognition ,Syllable ,Psychology ,Priming (psychology) ,Psychomotor Performance ,Word (computer architecture) - Abstract
The process of word form encoding was investigated in primed word naming and word typing with Chinese monosyllabic words. The target words shared or did not share the onset consonants with the prime words. The stimulus onset asynchrony (SOA) was 100ms or 300ms. Typing required the participants to enter the phonetic letters of the target word, which correspond roughly to the onset and the rhyme of the word's syllable. Regardless of SOAs, response times were shorter in the related condition than in the unrelated condition (an onset priming effect) for word typing, but were similar for word naming. The results suggest that naming and typing in Chinese may involve somewhat different word form encoding processes (syllable driven in naming, but segment driven in typing) even though both tasks require accessing the phonological codes. It appears, then, that the kind of outputs a production system is designed to produce can flexibly and adaptively alter the way the system is organized and operates.
- Published
- 2011
41. Low-temperature purification process of metallurgical silicon
- Author
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Zhi Wang, Lixin Zhao, Cheng-yi Li, and Zhancheng Guo
- Subjects
Materials science ,Silicon ,Metallurgy ,Metals and Alloys ,chemistry.chemical_element ,Geotechnical Engineering and Engineering Geology ,Condensed Matter Physics ,Lower temperature ,Metal ,Metallurgical silicon ,chemistry ,Impurity ,visual_art ,Scientific method ,Materials Chemistry ,visual_art.visual_art_medium ,Melting point ,Mass fraction - Abstract
The removal of B and P consumes most of heat energy in Si metallurgical purification process for solar-grade Si. Metal-liquating purification of metallurgical grade silicon (MG-Si), also called Si-recrystallization from metal liquid, was a potential energy-saving method for the removal of B and P efficiently, since Si could be melted at lower temperature by alloying with metal. The selection criteria of metal-liquating system was elaborated, and Al, Sn and In were selected out as the optimum metallic mediums. For Sn-Si system, the segregation coefficient of B decreased to 0.038 at 1 500 K, which was much less than 0.8 at the melting point of Si. The mass fraction of B was diminished from 15x10(-6) to 0.1x10(-6) as MG-Si was purified by twice, while that of most metallic elements could be decreased to 0.1x10(-6) by purifying just once. During the metal-liquating process, the formation of compounds between impurity elements and Si was also an important route of impurity removal. Finally, one low-temperature metallurgical process based on metal-liquating method was proposed.
- Published
- 2011
42. ATP-Binding Cassette Transporter VcaM from Vibrio cholerae is Dependent on the Outer Membrane Factor Family for Its Function
- Author
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Vassiliy N. Bavro, Cheng-Yi Li, Wen-Jung Lu, Wei-Chiang Chin, Hong-Ting Victor Lin, Hsuan-Ju Lin, and Thamarai K. Janganan
- Subjects
V. cholerae ,0301 basic medicine ,TolC ,ATPase ,ATP-binding cassette transporter ,VcaM ,multidrug efflux pumps ,medicine.disease_cause ,lcsh:Chemistry ,Gene Knockout Techniques ,Adenosine Triphosphate ,Cytosol ,Drug Resistance, Multiple, Bacterial ,Cloning, Molecular ,Vibrio cholerae ,lcsh:QH301-705.5 ,Spectroscopy ,biology ,Chemistry ,Escherichia coli Proteins ,Hydrolysis ,General Medicine ,Computer Science Applications ,Cell biology ,Colicin ,Efflux ,Multidrug Resistance-Associated Proteins ,Bacterial outer membrane ,Bacterial Outer Membrane Proteins ,Article ,Catalysis ,Phosphates ,Inorganic Chemistry ,03 medical and health sciences ,Escherichia coli ,medicine ,Physical and Theoretical Chemistry ,Molecular Biology ,Organic Chemistry ,Membrane Transport Proteins ,Transporter ,Periplasmic space ,030104 developmental biology ,lcsh:Biology (General) ,lcsh:QD1-999 ,biology.protein ,ATP-Binding Cassette Transporters ,Vanadates ,Extracellular Space - Abstract
Vibrio cholerae ATP-binding cassette transporter VcaM (V. cholerae ABC multidrug resistance pump) has previously been shown to confer resistance to a variety of medically important drugs. In this study, we set to analyse its properties both in vitro in detergent-solubilised state and in vivo to differentiate its dependency on auxiliary proteins for its function. We report the first detailed kinetic parameters of purified VcaM and the rate of phosphate (Pi) production. To determine the possible functional dependencies of VcaM on the tripartite efflux pumps we then utilized different E. coli strains lacking the principal secondary transporter AcrB (Acriflavine resistance protein), as well as cells lacking the outer membrane factor (OMF) TolC (Tolerance to colicins). Consistent with the ATPase function of VcaM we found it to be susceptible to sodium orthovanadate (NaOV), however, we also found a clear dependency of VcaM function on TolC. Inhibitors targeting secondary active transporters had no effects on either VcaM-conferred resistance or Hoechst 33342 accumulation, suggesting that VcaM might be capable of engaging with the TolC-channel without periplasmic mediation by additional transporters. Our findings are indicative of VcaM being capable of a one-step substrate translocation from cytosol to extracellular space utilising the TolC-channel, making it the only multidrug ABC-transporter outside of the MacB-family with demonstrable TolC-dependency.
- Published
- 2018
43. Whole-genome Sequencing for Tracing the Transmission Link between Two ARD Outbreaks Caused by a Novel HAdV Serotype 7 Variant, China
- Author
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Zhengjie Jiang, Zhengquan Yuan, Rongzhang Hao, Hui Ma, Hao Li, Zhihao Wu, Hongbin Song, Yansong Sun, Jian Wang, Shenlong Li, Leili Jia, Ligui Wang, Huandong Sun, Nan Liu, Peng Li, Cheng-Yi Li, Chaojie Yang, Yong Wang, Jing Xie, Shaofu Qiu, Liuyu Huang, Hongbo Liu, Shengjie Yi, Ying Li, and Ming Li
- Subjects
Adult ,Male ,Serotype ,China ,Genetic Linkage ,Genome, Viral ,Biology ,Serogroup ,Risk Assessment ,Article ,Virus ,Disease Outbreaks ,Adenovirus Infections, Human ,Risk Factors ,Prevalence ,Humans ,Respiratory Tract Infections ,Gene ,Genetics ,Whole genome sequencing ,Cross Infection ,Multidisciplinary ,Respiratory tract infections ,Transmission (medicine) ,Adenoviruses, Human ,Incidence ,Chromosome Mapping ,virus diseases ,Outbreak ,Virology ,eye diseases ,Viral replication ,Acute Disease ,Female - Abstract
From December 2012 to February 2013, two outbreaks of acute respiratory disease caused by HAdV-7 were reported in China. We investigated possible transmission links between these two seemingly unrelated outbreaks by integration of epidemiological and whole-genome sequencing (WGS) data. WGS analyses showed that the HAdV-7 isolates from the two outbreaks were genetically indistinguishable; however, a 12 bp deletion in the virus-associated RNA gene distinguished the outbreak isolates from other HAdV-7 isolates. Outbreak HAdV-7 isolates demonstrated increased viral replication compared to non-outbreak associated HAdV-7 isolate. Epidemiological data supported that the first outbreak was caused by introduction of the novel HAdV-7 virus by an infected recruit upon arrival at the training base. Nosocomial transmission by close contacts was the most likely source leading to onset of the second HAdV-7 outbreak, establishing the apparent transmission link between the outbreaks. Our findings imply that in-hospital contact investigations should be encouraged to reduce or interrupt further spread of infectious agents when treating outbreak cases and WGS can provide useful information guiding infection-control interventions.
- Published
- 2015
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44. Spatiotemporal Clustering Analysis and Risk Assessments of Human Cutaneous Anthrax in China, 2005-2012
- Author
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Shilu Tong, Cheng Yi Li, Ricardo J. Soares Magalhães, Hai Long Sun, Wen Yi Zhang, Zhi Hai Han, Shen Long Li, Yan Song Sun, Wenbiao Hu, Quan Qian, Li Ya Wang, Ubydul Haque, and Xiu Shan Zhang
- Subjects
Male ,China ,medicine.medical_specialty ,Public health interventions ,lcsh:Medicine ,Cutaneous anthrax ,History, 21st Century ,Risk Assessment ,Anthrax ,Spatio-Temporal Analysis ,Environmental health ,Epidemiology ,medicine ,Cluster Analysis ,Humans ,County level ,lcsh:Science ,Disease surveillance ,Multidisciplinary ,business.industry ,lcsh:R ,Skin Diseases, Bacterial ,Population Surveillance ,Female ,lcsh:Q ,Seasons ,Risk assessment ,Spatio temporal clustering ,business ,Research Article - Abstract
Objective To investigate the epidemic characteristics of human cutaneous anthrax (CA) in China, detect the spatiotemporal clusters at the county level for preemptive public health interventions, and evaluate the differences in the epidemiological characteristics within and outside clusters. Methods CA cases reported during 2005–2012 from the national surveillance system were evaluated at the county level using space-time scan statistic. Comparative analysis of the epidemic characteristics within and outside identified clusters was performed using using the χ2 test or Kruskal-Wallis test. Results The group of 30–39 years had the highest incidence of CA, and the fatality rate increased with age, with persons ≥70 years showing a fatality rate of 4.04%. Seasonality analysis showed that most of CA cases occurred between May/June and September/October of each year. The primary spatiotemporal cluster contained 19 counties from June 2006 to May 2010, and it was mainly located straddling the borders of Sichuan, Gansu, and Qinghai provinces. In these high-risk areas, CA cases were predominantly found among younger, local, males, shepherds, who were living on agriculture and stockbreeding and characterized with high morbidity, low mortality and a shorter period from illness onset to diagnosis. Conclusion CA was geographically and persistently clustered in the Southwestern China during 2005–2012, with notable differences in the epidemic characteristics within and outside spatiotemporal clusters; this demonstrates the necessity for CA interventions such as enhanced surveillance, health education, mandatory and standard decontamination or disinfection procedures to be geographically targeted to the areas identified in this study.
- Published
- 2015
45. Spatiotemporal Transmission Dynamics of Hemorrhagic Fever with Renal Syndrome in China, 2005–2012
- Author
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Ubydul Haque, Hai-Long Sun, Wenbiao Hu, Qiyong Liu, Ricardo J. Soares Magalhães, Archie C. A. Clements, Cheng Yi Li, Shen Long Li, Wen Wu Yin, Shilu Tong, Yun Xi Liu, Wenyi Zhang, Li-Ya Wang, Gregory E. Glass, Fan Ding, Hang Zhou, and Peng Bi
- Subjects
Adult ,Male ,medicine.medical_specialty ,China ,lcsh:Arctic medicine. Tropical medicine ,Epidemiology ,lcsh:RC955-962 ,Bioinformatics ,Spatio-Temporal Analysis ,Basic research ,Medicine and Health Sciences ,Medicine ,Cluster Analysis ,Humans ,Public and Occupational Health ,business.industry ,Transmission (medicine) ,Incidence ,lcsh:Public aspects of medicine ,Public Health, Environmental and Occupational Health ,Correction ,virus diseases ,lcsh:RA1-1270 ,Middle Aged ,Infectious Diseases ,Family medicine ,Hemorrhagic Fever with Renal Syndrome ,Female ,business ,Research Article - Abstract
Background Hemorrhagic fever with renal syndrome (HFRS) is a rodent-borne disease caused by many serotypes of hantaviruses. In China, HFRS has been recognized as a severe public health problem with 90% of the total reported cases in the world. This study describes the spatiotemporal dynamics of HFRS cases in China and identifies the regions, time, and populations at highest risk, which could help the planning and implementation of key preventative measures. Methods Data on all reported HFRS cases at the county level from January 2005 to December 2012 were collected from Chinese Center for Disease Control and Prevention. Geographic Information System-based spatiotemporal analyses including Local Indicators of Spatial Association and Kulldorff's space-time scan statistic were performed to detect local high-risk space-time clusters of HFRS in China. In addition, cases from high-risk and low-risk counties were compared to identify significant demographic differences. Results A total of 100,868 cases were reported during 2005–2012 in mainland China. There were significant variations in the spatiotemporal dynamics of HFRS. HFRS cases occurred most frequently in June, November, and December. There was a significant positive spatial autocorrelation of HFRS incidence during the study periods, with Moran's I values ranging from 0.46 to 0.56 (P, Author Summary Hemorrhagic fever with renal syndrome (HFRS) is a rodent-borne viral disease caused by many serotypes of hantaviruses. In China, HFRS has been recognized as a severe public health problem and accounts for 90% of the reported cases in the world. We examined the spatiotemporal dynamics of HFRS cases in China during 2005–2012 and compared characteristics between cases from high-risk and low-risk counties. Several distinct HFRS cluster areas were identified, concentrated in northeastern, central, and eastern of China. Compared with cases from low-risk areas, a higher proportion of cases were younger, non-farmer, and floating residents in high-risk counties. These findings suggest preventative strategies for HFRS should be focused on the identified clusters in order to achieve the most cost-effective outcomes.
- Published
- 2014
46. Clinical Characteristics, Management and Prognostic Factors in Patients with Probable Severe Acute Respiratory Syndrome (SARS) in a SARS Center in Taiwan
- Author
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Chung-Hsu Lai, Cheng-Yi Li, Chunyu Liu, Hsin-Pai Chen, Te-Li Chen, Lin-Ju Huang, and Chang-Phone Fung
- Subjects
medicine.medical_specialty ,Pleural effusion ,medicine.medical_treatment ,Article ,C-reactive protein ,Internal medicine ,medicine ,Intubation ,Intensive care medicine ,clinical characteristics ,Medicine(all) ,lcsh:R5-920 ,biology ,business.industry ,severe acute respiratory syndrome (SARS) ,prognostic factors ,Retrospective cohort study ,General Medicine ,Odds ratio ,medicine.disease ,Respiratory failure ,Atypical pneumonia ,biology.protein ,Severe acute respiratory syndrome ,business ,lcsh:Medicine (General) - Abstract
Background Severe acute respiratory syndrome (SARS) is an emerging viral infectious disease. We report our experience in treating SARS patients. Methods From April 27 to May 24, 2003, a total of 36 patients with probable SARS were admitted and treated in a hospital rearranged as a special center for the management of SARS patients. Medical records for the patients were retrospectively reviewed. Univariate and multivariate analyses were performed to determine factors associated with respiratory failure and intubation. Results Of the 36 patients with probable SARS (median age, 37 years; range, 22-66 years), 9 were male and 27 were female. Thirty-two patients (88.9%) were infected in the hospital setting. All patients presented with fever, and 33 eventually developed lymphopenia during hospitalization. Chest radiography showed no unique pattern, but pleural effusion was not seen. All patients initially received empiric antibacterial therapy against common causative pathogens of atypical pneumonia. Ribavirin was given to all except 1 patient. Twenty-two patients received immunoglobulin therapy, and 32 were given corticosteroids. A total of 20 patients (55.6%) required supplemental oxygen, and 8 (22.2%) were intubated with mechanical ventilatory support. Two of these patients died. A higher body temperature at presentation (median 39.5 vs 38.6°C), and higher peak values of lactate dehydrogenase (410 vs 282 U/L) and C-reactive protein (10.2 vs 2.5 mg/dL), were associated with subsequent respiratory failure. Multivariate analysis showed that peak level of C-reactive protein was the only independent predictor of respiratory failure and intubation (odds ratio for every increment of 1 mg/dL = 1.45; 95% confidence interval=1.003, 2.097; p = 0.048). Conclusion All patients with probable SARS who were admitted to hospital presented with fever and lymphopenia. While the efficacy of different treatments could not be evaluated from this retrospective study, a higher value of C-reactive protein was associated with the development of respiratory failure and subsequent intubation.
- Published
- 2005
47. Quarantine Methods and Prevention of Secondary Outbreak of Pandemic (H1N1) 2009
- Author
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Dong Hui Huo, Chenyi Chu, Hong-Bin Song, Yong Wang, Zhi-Tao Yin, Cheng-Yi Li, Liang Wen, Feng Li, and Hui Zhang
- Subjects
Microbiology (medical) ,China ,Epidemiology ,education ,lcsh:Medicine ,medicine.disease_cause ,lcsh:Infectious and parasitic diseases ,law.invention ,Young Adult ,Influenza A Virus, H1N1 Subtype ,law ,Influenza, Human ,Quarantine ,Pandemic ,Influenza A virus ,Humans ,Medicine ,Infection control ,viruses ,lcsh:RC109-216 ,Students ,Pandemics ,Chi-Square Distribution ,business.industry ,lcsh:R ,Dispatch ,quarantine ,Outbreak ,Influenza a ,pandemic (H1N1) 2009 ,medicine.disease ,Virology ,Infectious Diseases ,Disease prevention ,Medical emergency ,influenza ,business ,isolation ,Disease transmission - Abstract
Quarantine Methods and Secondary Outbreak Prevention, During the 2009 influenza (H1N1) pandemic, some countries used quarantine for containment or mitigation. Of 152 quarantined university students we studied, risk for illness was higher for students quarantined in a room with a person with a confirmed case; we found no difference between students quarantined in double or single rooms.
- Published
- 2010
48. Association between Hemorrhagic Fever with Renal Syndrome Epidemic and Climate Factors in Heilongjiang Province, China
- Author
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Bao-Long Wang, Jun Ma, Changping Li, Cui Zhang, Shen-Long Li, Wenyi Zhang, Cheng-Yi Li, Hai-Long Sun, Ricardo J. Soares Magalhães, Zhuang Cui, and Liuyu Huang
- Subjects
Veterinary medicine ,China ,Orthohantavirus ,Endemic Diseases ,Lag ,Biology ,law.invention ,Climatic data ,law ,Virology ,Humans ,Autoregressive integrated moving average ,Maximum temperature ,Models, Statistical ,Temperature ,Endemic area ,virus diseases ,Humidity ,Articles ,Infectious Diseases ,Transmission (mechanics) ,El Niño Southern Oscillation ,Hemorrhagic Fever with Renal Syndrome ,Parasitology ,Seasons - Abstract
The purpose of this study was to quantify the relationship between climate variation and transmission of hemorrhagic fever with renal syndrome (HFRS) in Heilongjiang Province, a highly endemic area for HFRS in China. Monthly notified HFRS cases and climatic data for 2001-2009 in Heilongjiang Province were collected. Using a seasonal autoregressive integrated moving average model, we found that relative humidity with a one-month lag (β = -0.010, P = 0.003) and a three-month lag (β = 0.008, P = 0.003), maximum temperature with a two-month lag (β = 0.082, P = 0.028), and southern oscillation index with a two-month lag (β = -0.048, P = 0.019) were significantly associated with HFRS transmission. Our study also showed that predicted values expected under the seasonal autoregressive integrated moving average model were highly consistent with observed values (Adjusted R(2) = 83%, root mean squared error = 108). Thus, findings may help add to the knowledge gap of the role of climate factors in HFRS transmission in China and also assist national local health authorities in the development/refinement of a better strategy to prevent HFRS transmission.
- Published
- 2013
49. Geographic Co-distribution of Influenza Virus Subtypes H7N9 and H5N1 in Humans, China
- Author
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Fan Ding, Wenbiao Hu, Archie C. A. Clements, Wenyi Zhang, Qiyong Liu, Shenlong Li, Cheng-Yi Li, Zeliang Chen, Li-Ya Wang, Yansong Sun, Ricardo J. Soares Magalhães, Hai-Long Sun, and Liuyu Huang
- Subjects
Adult ,Male ,Microbiology (medical) ,Mainland China ,China ,Veterinary medicine ,medicine.medical_specialty ,Letter ,Epidemiology ,Population ,highly pathogenic ,lcsh:Medicine ,Biology ,Influenza A Virus, H7N9 Subtype ,medicine.disease_cause ,Virus ,lcsh:Infectious and parasitic diseases ,H7N9 ,Young Adult ,low pathogenicity ,Influenza, Human ,medicine ,viruses ,lcsh:RC109-216 ,Geography, Medical ,Letters to the Editor ,influenza A ,humans ,education ,Aged ,education.field_of_study ,Influenza A Virus, H5N1 Subtype ,Transmission (medicine) ,subtypes ,Public health ,lcsh:R ,geographic co-distribution ,virus diseases ,Spatial epidemiology ,H5N1 ,Middle Aged ,Influenza A virus subtype H5N1 ,Infectious Diseases ,Relative risk ,Female ,avian influenza ,influenza ,Demography - Abstract
To the Editor: Human infection with a novel low pathogenicity influenza A(H7N9) virus in eastern China has recently raised global public health concerns (1). The geographic sources of infection have yet to be fully clarified, and confirmed human cases from 1 province have not been linked to those from other provinces. While some studies have identified epidemiologic characteristics of subtype H7N9 cases and clinical differences between these cases and cases of highly pathogenic influenza A(H5N1), another avian influenza affecting parts of China (2–4), the spatial epidemiology of human infection with influenza subtypes H7N9 and H5N1 in China has yet to be elucidated. To test the hypothesis of co-distribution of high-risk clusters of both types of infection, we used all available data on human cases in mainland China and investigated the geospatial epidemiologic features. Data on individual confirmed human cases of influenza (H7N9) from February 19, 2013, through May 17, 2013, and of influenza (H5N1) from October 14, 2005, through May 17, 2013, were collected from the Chinese Center for Disease Control and Prevention. The definitions of these cases have been described (3,5). A total of 129 confirmed cases of influenza (H7N9) (male:female ratio 2.39:1) and 40 confirmed cases of influenza (H5N1) (male:female ratio 0.90:1) were included in the analysis. The median age of persons with influenza (H7N9) was higher than for persons with influenza (H5N1) (58 years vs. 27 years; z = −7.73; p2 family members with laboratory-confirmed cases, was found for influenza (H7N9) cases during March–April 2013 in Shanghai and Jiangsu Provinces and for influenza (H5N1) cases during December 2007 in Jiangsu Province. Family clustering may indicate person-to-person viral transmission or may reflect common exposure to infected poultry or their excrement in the household or in a contaminated environment (7). No evidence supports person-to-person viral transmission as the means of transmission in family clusters. In conclusion, we found compelling evidence that the high-risk areas for human infection with subtype H7N9 and H5N1 viruses are co-distributed in an area bordering the provinces of Anhui and Zhejiang, which suggests that this area might be a common ground for the transmission of emerging avian influenza viruses in China. We also found that visits to live poultry markets or exposure to contaminated environments are a pathway to infection with influenza (H7N9) virus, whereas infection with influenza (H5N1) is more tied to occupational hazards. These differences may reflect the differences in the pathogenicity of the viruses in poultry, which influences disease progression and identification of clinical signs further down the poultry market chain. Further empirical investigation into our findings could identify risk factors that might be involved in disease transmission to humans in high-risk areas and could help public health authorities develop targeted control and surveillance strategies to prevent disease transmission.
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- 2013
50. Epidemiologic features of severe fever with thrombocytopenia syndrome in China, 2011-2012
- Author
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Wenwu Yin, Qiyong Liu, Qun Li, Cheng-Yi Li, Wenyi Zhang, Fan Ding, Shenlong Li, Liuyu Huang, Li-Ya Wang, Weizhong Yang, Hang Zhou, Sha Sha, Ricardo J. Soares Magalhães, Hai-Long Sun, and Wenbiao Hu
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Microbiology (medical) ,Adult ,Male ,Phlebovirus ,Pediatrics ,medicine.medical_specialty ,China ,Adolescent ,Fever ,Disease ,Tick ,Bunyaviridae Infections ,Leukocytopenia ,medicine ,Humans ,Vector (molecular biology) ,Child ,Aged ,Aged, 80 and over ,biology ,business.industry ,Transmission (medicine) ,SFTS virus ,Infant ,Middle Aged ,medicine.disease ,biology.organism_classification ,Thrombocytopenia ,Severe fever with thrombocytopenia syndrome ,Infectious Diseases ,Child, Preschool ,Female ,Haemaphysalis longicornis ,business - Abstract
Severe fever with thrombocytopenia syndrome (SFTS), an emerging vector-borne disease, is caused by a novel bunyavirus belonging to the genus Phlebovirus [1, 2]. SFTS infections can be life-threatening and are characterized by sudden onset of fever, thrombocytopenia, gastrointestinal symptoms, and leukocytopenia. The tick Haemaphysalis longicornis is generally considered to be the vector of SFTS, which is widely distributed in China [2]. Person-to-person transmission through direct contact with contaminated blood has also been reported as a possible means of SFTS transmission [3–5]. Currently, there is no specific treatment other than supportive care [6]...
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- 2013
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