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5. Block-Level Image Service for the Cloud

Author

Li, Huiba, primary, Zhang, Zhihao, additional, Yuan, Yifan, additional, Du, Rui, additional, Ma, Kai, additional, Liu, Lanzheng, additional, Zhang, Yiming, additional, and Hsu, Windsor, additional

Published
2023
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6. Block-level Image Service for the Cloud.

Author

Li, Huiba, Zhang, Zhihao, Yuan, Yifan, Du, Rui, Ma, Kai, Liu, Lanzheng, Zhang, Yiming, and Hsu, Windsor

Subjects
IMAGING systems, COMPUTER network architectures, ELECTRONIC commerce
Abstract

Businesses increasingly need agile and elastic computing infrastructure to respond quickly to real-world situations. By offering efficient process-based virtualization and a layered image system, containers are designed to enable agile and elastic application deployment. However, creating or updating large container clusters is still slow due to the image downloading and unpacking process. In this article, we present DADI Image Service (DADI), a block-level image service for increased agility and elasticity in deploying applications. DADI replaces the waterfall model of starting containers (downloading image, unpacking image, starting container) with fine-grained on-demand transfer of remote images, realizing instant start of containers. To accelerate the cold start of containers,DADI designs a pull-based prefetching mechanism that allows a host to read necessary image data beforehand at the granularity of image layers. We design a peer-to-peer–based decentralized image sharing architecture to balance traffic among all the participating hosts and propose a pull-push collaborative prefetching mechanism to accelerate cold start.DADI efficiently supports various kinds of runtimes including cgroups, QEMU, and so on, further realizing "build once, run anywhere."DADI has been deployed at scale in the production environment of Alibaba, serving one of the world's largest ecommerce platforms. Performance results show thatDADI can cold start 10,000 containers on 1,000 hosts within 4 s. [ABSTRACT FROM AUTHOR]

Published
2024
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8. Disease-Specific and Gender-Dependent Gut-Microbiome Features in Chinese Colon Polyps Patients

Author

Chen, Binbin, primary, Liu, Ming, additional, Liu, Hui, additional, Shen, Yang, additional, Li, Jiaorong, additional, Wang, Yanan, additional, Song, Xintong, additional, Wei, Zhixing, additional, Liu, Jingyao, additional, Wei, Xiangrui, additional, Liu, Lanzheng, additional, Zhao, Xiulan, additional, Zhang, Mingbao, additional, and Zhou, Jun, additional

Published
2023
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13. A CRISPR-Cas12a-based specific enhancer for more sensitive detection of SARS-CoV-2 infection

Author

Huang, Weiren, primary, Yu, Lei, additional, Wen, Donghua, additional, Wei, Dong, additional, Sun, Yangyang, additional, Zhao, Huailong, additional, Ye, Yu, additional, Chen, Wei, additional, Zhu, Yongqiang, additional, Wang, Lijun, additional, Wang, Li, additional, Wu, Wenjuan, additional, Zhao, Qianqian, additional, Xu, Yong, additional, Gu, Dayong, additional, Nie, Guohui, additional, Zhu, Dongyi, additional, Guo, Zhongliang, additional, Ma, Xiaoling, additional, Niu, Liman, additional, Huang, Yikun, additional, Liu, Yuchen, additional, Peng, Bo, additional, Zhang, Renli, additional, Zhang, Xiuming, additional, Li, Dechang, additional, Liu, Yang, additional, Yang, Guoliang, additional, Liu, Lanzheng, additional, Zhou, Yunying, additional, Wang, Yunshan, additional, Hou, Tieying, additional, Gao, Qiuping, additional, Li, Wujiao, additional, Chen, Shuo, additional, Hu, Xuejiao, additional, Han, Mei, additional, Zheng, Huajun, additional, Weng, Jianping, additional, Cai, Zhiming, additional, Zhang, Xinxin, additional, Song, Fei, additional, Zhao, Guoping, additional, and Wang, Jin, additional

Published
2020
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14. Fatal avian influenza (H5N1) infection in human, China

Author

Zhang, Ji, Geng, Xingyi, Ma, Yanhui, Ruan, Shiman, Xu, Shuhui, Liu, Lanzheng, Xu, Huaru, Yang, Guoliang, Wang, Chunrong, Liu, Chong, Han, Xiuyun, Yu, Qiuyan, Cheng, Hongqi, and Li, Zhan

Subjects
Influenza -- Health aspects, Poultry industry -- Health aspects, Health
Abstract

To the Editor: Since the first avian influenza virus (H5N1) was isolated from a goose in the southern region of the People's Republic of China a decade ago (1), no [...]

Published
2010
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15. Contamination of Cronobacter spp. in Chinese Retail Spices

Author

Hu Guangchun, Jinrui Hu, Liu Lanzheng, Liu Hui, Jinghua Cui, Shan Xiaoying, Shi Yuwen, Li Jian, and Liu Ming

Subjects
0301 basic medicine, Veterinary medicine, China, 030106 microbiology, Food Contamination, Microbial Sensitivity Tests, Biology, Applied Microbiology and Biotechnology, Microbiology, 03 medical and health sciences, Cronobacter turicensis, Cronobacter dublinensis, Pulsed-field gel electrophoresis, Cronobacter, Spices, Cronobacter malonaticus, biology.organism_classification, Cronobacter sakazakii, Anti-Bacterial Agents, Bacterial Typing Techniques, Electrophoresis, Gel, Pulsed-Field, Cronobacter muytjensii, 030104 developmental biology, Food Microbiology, Multilocus sequence typing, Animal Science and Zoology, Food Science, Multilocus Sequence Typing
Abstract

Crononbacter spp. is an opportunistic foodborne pathogen that causes infections in neonates, infants, and immunocompromised adults. Although the contamination of spices with Cronobacter has been previously reported in some countries, there have been no studies on Cronobacter contamination in China. Therefore, this study aimed to investigate the prevalence of Cronobacter spp. in Chinese retail spices. Fifty-six packaged Chinese spices were collected from different markets, and 32 of these were found to be contaminated with Cronobacter. Five species were identified from the 54 isolates of the 32 positive samples: Cronobacter sakazakii (n = 35), Cronobacter muytjensii (n = 8), Cronobacter malonaticus (n = 6), Cronobacter turicensis (n = 3), and Cronobacter dublinensis (n = 2). Pulsed-field gel electrophoresis demonstrated high genetic diversity, as 53 PFGE profiles were revealed for the 54 isolates. Multilocus sequence typing analysis revealed 46 sequence types, and of these, 26 were newly identified. Most of the isolates were sensitive to antibiotics (n = 15), with the exception of cefazolin. This study revealed that the contamination of Chinese retail spices by Cronobacter spp. poses a potential risk to the consumer.

Published
2018

19. RT-PCR for NoV v1

Author

Guan, Hengyun, primary, Wang, Chunrong, additional, Liu, Lanzheng, additional, and Yang, Guoliang, additional

Published
2018
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21. Evaluation and implementation of a membrane filter method for Cronobacter detection in drinking water

Author

Li Jian, Shi Yuwen, Liu Lanzheng, Yuelian Yang, Liu Hui, Hu Guangchun, Jinghua Cui, and Huiyuan Liu

Subjects
biology, Drinking Water, Micropore Filters, Portable water purification, Membrane filter, Contamination, biology.organism_classification, Peptide Elongation Factor G, Microbiology, Cronobacter sakazakii, Isolation rate, Water Purification, Total coliform, Potable water, Cronobacter, Genes, Bacterial, Environmental chemistry, Genetics, Food science, Molecular Biology, Phylogeny
Abstract

A membrane filter (MF) method was evaluated for its suitability for qualitative and quantitative analyses of Cronobacter spp. in drinking water by pure strains of Cronobacter and non-Cronobacter, and samples spiked with chlorinated Cronobacter sakazakii ATCC 29544. The applicability was verified by the tests: for pure strains, the sensitivity and the specificity were both 100%; for spiked samples, the MF method recovered 82.8 ± 10.4% chlorinated ATCC 29544 cells. The MF method was also applied to screen Cronobacter spp. in drinking water samples from municipal water supplies on premises (MWSP) and small community water supplies on premises (SCWSP). The isolation rate of Cronobacter spp. from SCWSP samples was 31/114, which was significantly higher than that from MWSP samples which was 1/131. Besides, the study confirmed the possibility of using total coliform as an indicator of contamination level of Cronobacter spp. in drinking water, and the acquired correct positive rate was 96%.

Published
2012

24. Contamination of Cronobacterspp. in Chinese Retail Spices

Author

Liu, Ming, Hu, Guangchun, Shi, Yuwen, Liu, Hui, Li, Jian, Shan, Xiaoying, Hu, Jinrui, Cui, Jinghua, and Liu, Lanzheng

Abstract

AbstractCrononbacter spp. is an opportunistic foodborne pathogen that causes infections in neonates, infants, and immunocompromised adults. Although the contamination of spices with Cronobacterhas been previously reported in some countries, there have been no studies on Cronobactercontamination in China. Therefore, this study aimed to investigate the prevalence of Cronobacterspp. in Chinese retail spices. Fifty-six packaged Chinese spices were collected from different markets, and 32 of these were found to be contaminated with Cronobacter. Five species were identified from the 54 isolates of the 32 positive samples: Cronobacter sakazakii(n= 35), Cronobacter muytjensii(n= 8), Cronobacter malonaticus(n= 6), Cronobacter turicensis(n= 3), and Cronobacter dublinensis(n= 2). Pulsed-field gel electrophoresis demonstrated high genetic diversity, as 53 PFGE profiles were revealed for the 54 isolates. Multilocus sequence typing analysis revealed 46 sequence types, and of these, 26 were newly identified. Most of the isolates were sensitive to antibiotics (n= 15), with the exception of cefazolin. This study revealed that the contamination of Chinese retail spices by Cronobacterspp. poses a potential risk to the consumer.

Published
2018
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29. Renal impairment caused by chronic occupational chromate exposure

Author

Wang, Tiancheng, primary, Jia, Guang, additional, Zhang, Ji, additional, Ma, Yanhui, additional, Feng, Weiyue, additional, Liu, Lanzheng, additional, Zhang, Ning, additional, Yan, Lei, additional, Wang, Xiang, additional, Zhang, Xueyan, additional, Liu, Zihong, additional, Du, Xianmei, additional, and Zhen, Sen, additional

Published
2010
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30. Evaluation and implementation of a membrane filter method for Cronobacter detection in drinking water.

Author

Liu, Hui, Yang, Yuelian, Cui, Jinghua, Liu, Lanzheng, Liu, Huiyuan, Hu, Guangchun, Shi, Yuwen, and Li, Jian

Subjects
MEMBRANE filters, CRONOBACTER, CONTAMINATION of drinking water, CHLOROHYDROCARBONS, MUNICIPAL water supply, ELECTROPHORESIS, QUALITATIVE chemical analysis
Abstract

A membrane filter ( MF) method was evaluated for its suitability for qualitative and quantitative analyses of Cronobacter spp. in drinking water by pure strains of Cronobacter and non- Cronobacter, and samples spiked with chlorinated Cronobacter sakazakii ATCC 29544. The applicability was verified by the tests: for pure strains, the sensitivity and the specificity were both 100%; for spiked samples, the MF method recovered 82.8 ± 10.4% chlorinated ATCC 29544 cells. The MF method was also applied to screen Cronobacter spp. in drinking water samples from municipal water supplies on premises ( MWSP) and small community water supplies on premises ( SCWSP). The isolation rate of Cronobacter spp. from SCWSP samples was 31/114, which was significantly higher than that from MWSP samples which was 1/131. Besides, the study confirmed the possibility of using total coliform as an indicator of contamination level of Cronobacter spp. in drinking water, and the acquired correct positive rate was 96%. [ABSTRACT FROM AUTHOR]

Published
2013
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