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116 results on '"Chen, Xingfu"'

7. A Pectic Polysaccharide from Codonopsis pilosula Alleviates Inflammatory Response and Oxidative Stress of Aging Mice via Modulating Intestinal Microbiota-Related Gut–Liver Axis

Author

Zou, Yuanfeng, primary, Yan, Hong, additional, Li, Cenyu, additional, Wen, Fang, additional, Jize, Xiaoping, additional, Zhang, Chaowen, additional, Liu, Siqi, additional, Zhao, Yuzhe, additional, Fu, Yuping, additional, Li, Lixia, additional, Liu, Fan, additional, Chen, Ji, additional, Li, Rui, additional, Chen, Xingfu, additional, and Tian, Mengliang, additional

Published
2023
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14. Application of BP Neural Network for the Abnormity Monitoring in Slab Continuous Casting

Author

Wang, Xudong, Yao, Man, Chen, Xingfu, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Yin, Fu-Liang, editor, Wang, Jun, editor, and Guo, Chengan, editor

Published
2004
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20. Commercial TMR heads for hard disk drives: characterization and extendibility at 300 Gbit/[in.sup.2]

Author

Mao, Sining, Chen, Yonghua, Liu, Feng, Chen, Xingfu, Xu, Bin, Lu, Puling, Patwari, Mohammed, Xi, Haiwen, Chang, Clif, Miller, Brad, Menard, Dave, Pant, Bharat, Loven, Jay, Duxstad, Kristin, Li, Shaoping, Zhang, Zhengyong, Johnston, Alan, Lamberton, Robert, Gubbins, Mark, McLaughlin, Tom, Gadbois, Jason, Ding, Juren, Cross, Bill, Xue, Song, and Ryan, Pat

Subjects
Hard disks -- Magnetic properties, Magnetoresistance -- Analysis, 10GB - 14.99GB hard disk drive, 15GB - 19.99GB hard disk drive, 20GB - 25GB hard disk drive, 5GB - 9.99GB hard disk drive, Hard disk drive, Over 25GB hard disk drive, Under 5GB hard disk drive, Business, Electronics, Electronics and electrical industries
Abstract

Tunneling magnetoresistive (TMR) reading heads at an areal density of 80-100 Gbit/[in.sup.2] in a longitudinal magnetic recording mode have for the first time been commercialized for both laptop and desktop Seagate hard disk drive products. The first generation TMR products utilized a bottom TMR stack and an abutted hard bias design. These TMR heads have demonstrated three times the amplitude of comparable giant magnetoresistive (GMR) devices, resulting in a 0.6 decade bit error rate gain over GMR. This has enabled high component and drive yields. Due to the improved thermal dissipation of current-perpendicular-to-plane geometry, TMR runs cooler and has better lifetime performance, and has demonstrated the similar electrical static discharge robustness as GMR. TMR has demonstrated equivalent or better process and wafer yields compared to GMR. The TMR heads is proven to be a mature and capable reader technology. Using the same TMR head design in conjunction with perpendicular recording, 274 Gbit/ [in.sup.2] has been demonstrated. Advanced design can reach 311 Gbit/[in.sup.2]. Index Terms--Areal density, disk drives, electrical static discharge (ESD), longitudinal recording, noise, perpendicular recording, reliability, signal-to-noise ratio (SNR), tunneling magnetoresistive (TMR) heads.

Published
2006

23. Combinative Method Using Multi-components Quantitation and HPLC Fingerprint for Comprehensive Evaluation of Gentiana crassicaulis

Author

Song, Jiuhua, Chen, Fengzheng, Liu, Jiang, Zou, Yuanfeng, Luo, Yun, Yi, Xiaoyan, Meng, Jie, and Chen, Xingfu

Subjects
Gentiana crassicaulis, Original Article, multi-components quantitation, HPLC fingerprint, quality evaluation
Abstract

Background: Gentiana crassicaulis () is an important traditional Chinese herb. Like other herbs, its chemical compounds vary greatly by the environmental and genetic factors, as a result, the quality is always different even from the same region, and therefore, the quality evaluation is necessary for its safety and effective use. In this study, a comprehensive method including HPLC quantitative analysis and fingerprints was developed to evaluate the quality of Cujingqinjiao and to classify the samples collected from Lijiang City of Yunnan province. A total of 30 common peaks including four identified peaks, were found, and were involved for further characterization and quality control of Cujingqinjiao. Twenty-one batches of samples from Lijiang City of Yunnan Province were evaluated by similarity analysis (SA), hierarchical cluster analysis (HCA), principal component analysis (PCA) and factor analysis (FA) according to the characteristic of common peaks. Results: The obtained data showed good stability and repeatability of the chromatographic fingerprint, similarity values were all more than 0.90. This study demonstrated that a combination of the chromatographic quantitative analysis and fingerprint offered an efficient way to quality consistency evaluation of Cujingqinjiao. Consistent results were obtained to show that samples from a same origin could be successfully classified into two groups. Conclusion: This study revealed that the combinative method was reliable, simple and sensitive for fingerprint analysis, moreover, for quality control and pattern recognition of Cujingqinjiao. SUMMARY HPLC quantitative analysis and fingerprints was developed to evaluate the quality of Gentiana crassicaulisSimilarity analysis, hierarchical cluster analysis, principal component analysis and factor analysis were employed to analysis the chromatographic dataset.The results of multi-components quantitation analysis, similarity analysis, hierarchical cluster analysis, principal component analysis and factor analysis were consistent.All samples could be classified into two groups, which could to some extent reflect the quality differences of theses samples. Abbreviations used: SA: Similarity analysis, HCA: Hierarchical cluster analysis, PCA :Principal component Analysis, FA :Factor analysis

Published
2017

25. A pectic polysaccharide from water decoction of Xinjiang Lycium barbarum fruit protects against intestinal endoplasmic reticulum stress

Author

Huang, Chao, primary, Yao, Ruyu, additional, Zhu, Zhongkai, additional, Pang, Dejiang, additional, Cao, Xiyue, additional, Feng, Bin, additional, Paulsen, Berit Smestad, additional, Li, Lixia, additional, Yin, Zhongqiong, additional, Chen, Xingfu, additional, Jia, Renrong, additional, Song, Xu, additional, Ye, Gang, additional, Luo, Qihui, additional, Chen, Zhengli, additional, and Zou, Yuanfeng, additional

Published
2019
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28. Two complement fixing pectic polysaccharides from pedicel of Lycium barbarum L. promote cellular antioxidant defense

Author

Yao, Ruyu, primary, Huang, Chao, additional, Chen, Xingfu, additional, Yin, Zhongqiong, additional, Fu, Yuping, additional, Li, Lixia, additional, Feng, Bin, additional, Song, Xu, additional, He, Changliang, additional, Yue, Guizhou, additional, Jing, Bo, additional, Lv, Cheng, additional, Su, Gang, additional, Ye, Gang, additional, and Zou, Yuanfeng, additional

Published
2018
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37. Development of Prediction Method for Abnormalities in Slab Continuous Casting Using Artificial Neural Network Models

Author

Wang Xudong, Yao Man, and Chen Xingfu

Subjects
Engineering, Breakout, Artificial neural network, business.industry, Mechanical Engineering, Metals and Alloys, Mechanical engineering, Continuous casting, Mechanics of Materials, Casting (metalworking), Materials Chemistry, Lubrication, Slab, Foundry, business, Casing
Abstract

The breakout and other abnormalities in the mould have a critical influence on strand surface and casting productivity in continuous casting. Prediction of these mould abnormalities is an essential prerequisite for producing a good quality product with minimal disruption and defects. It is also important for optimization of casing process and operating safety. The mould friction (MDF) between strand and mould is one of the most important parameters that can be used to describe frictional behavior and mechanical interaction between the strand and the mould. Monitoring MDF online can contribute to evaluation of the powder lubrication, optimization of casting variables, prediction to breakout and other abnormities. In this work, based on the measurement data of mould friction on two strands slab caster in a steel plant, the prediction method for MDF abnormalities has been investigated by using artificial neural network models in combination with two auxiliary algorithms, one for ramp and the other for pulse variation of MDF. A set of software to predict the MDF abnormalities of continuous casting has been developed. The results of simulating prediction for online measurement MDF data are found to be basically consistent with those collected from the abnormal records of steel plant.

Published
2006

38. Overexpression of chitinase PbChia1from Plasmodiophora brassicaeimproves broad-spectrum disease resistance of Arabidopsis

Author

Zhao, Yanli, Li, Chao, Chen, Xingfu, Cheng, Jiasen, Xie, Jiatao, lin, yang, Fu, Yanping, Jiang, Daohong, and Chen, Tao

Abstract

ABSTRACTChitinase plays an important role in plant resistance against chitin-containing pathogens through hydrolysis of chitin. Clubroot caused by Plasmodiophora brassicaeis a major disease for cruciferous crops and vegetables worldwide. The cell wall of P. brassicaeresting spores contains chitin. Chitinase is regarded as capable of improving plant resistance to fungal diseases. However, there has been no report about the function of chitinase in P. brassicae. Here, wheat germ agglutinin staining and commercial chitinase treatment demonstrated that chitin is a functional component in P. brassicae. In addition, Chitinase PbChia1 was identified by chitin pull-down assay combined with LC-MS/MS. PbChia1 was found to be a typical secreted chitinase, which could bind chitin with chitinase activity in vitro. PbChia1 could significantly decrease the resting spores of P. brassicaeand therefore relieve the severity of clubroot symptom, with a biocontrol effect of 61.29%. Overexpression of PbChia1in Arabidopsis thalianaimproved its resistance to P. brassicae, increased host survival rate and seed yield, enhanced PAMPs-triggered reactive oxygen species burst, MAPK activation and expression of immune-related genes. PbChia1transgenic plants also showed resistance to other pathogens, such as biotrophic bacterium PstDC3000, necrotrophic fungi Sclerotinia sclerotiorumand Rhizoctonia solani. These findings indicate that chitinase PbChia1is a candidate gene that can confer broad-spectrum disease resistance in breeding.

Published
2023
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48. A comparison of volatile fractions obtained from Lonicera macranthoidesvia different extraction processes: ultrasound, microwave, Soxhlet extraction, hydrodistillation, and cold maceration

Author

Wu, Chun, Wang, Feng, Liu, Jiang, Zou, Yuanfeng, and Chen, Xingfu

Abstract

Hydrodistillation has been traditionally used to extract volatile fraction in traditional Chinese medicine. However, with the development of Soxhlet extraction (SE), microwave (MW), ultrasound (US), and cold maceration (CM), hydrodistillation (HD) is being replaced to meet some practical requirements. In this study, we investigated the effect of the five methods on the volatile fraction extract of Lonicera macranthoides.

Published
2015
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