2,004 research outputs found
Identifications of polyphenols and quantification of anthocyanidins in grapes and grape-derived products
No full textPolyphenols in grapes and grape-derived products have attracted public and scientific attention due to their numerous protective roles to human health. A rapid and comprehensive qualitative method was developed to characterize the different classes of polyphenols, such as anthocyanins, flavonols, phenolic acids and flavanols/proanthocyanidins, in grapes and grape-derived products. The detection was achieved by two runs with same HPLC gradient in different MS ionization modes and mobile phase modifiers (positive mode and 0.4% trifluoroacetic acid for anthocyanins and flavonols, negative mode and 0.1% formic acid for phenolic acids and flavanols). Under the optimized LC/MS conditions and based on the analysis of the MS and UV data and in comparison with the authenticated standards, a total of 53 polyphenolic compounds were successfully separated and individually identified including 33 anthocyanins, 12 flavonols, 4 phenolic acids and 4 flavanols/proanthocyanidins. With the method developed, a survey was conducted to qualitatively assess and compare the composition of polyphenols among 29 grapes and grape-derived products. To facilitate the quantitation of the major class of polyphenolic anthocyanidins, a simple and precise acid assisted hydrolysis method was established for the quantitation of anthocyanidins in grape juice samples, grape berries and grape skins using LC/MS. Five most common anthocyanidins of delphenidin, petunidin, cyanidin, malvidin, and peonidin in the hydrolyzed grape extracts were included in the quantification study. The validation of this method showed that the recovery percentages of five anthocyanidins ranged from 98.59 % to 103.20% with the relative standard deviation (RSD) less than 5.03%. The qualitative method provided complete insight into the composition of polyphenols in grapes, and other grape-derived products. This quantitative method provides a rapid and accurate tool to quantitatively study individual anthocyanidin in grapes or grape juice samples for quality control and to facilitate the evaluation and comparison of new commercial grapes or grape juice products in market.M.S.Includes bibliographical referencesby Yanping X
Web-spline finite elements
No full textCao, Yanping; Terlyga, Olga; Laarhoven, Jon Van; Wu, Jianbao; Xue, Guangri; Zhang, Ping; Grandine, Thomas. (2006). Web-spline finite elements. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/3727
Overcoming Barriers for Breast Cancer Detection in Women with High Breast Density [Letter]
Full text linkXiaopeng Wu, Yanping Miao Department of Radiology, The Affiliated Hospital of Inner Mongolia Medical University, Hohhot, Inner Mongolia, People’s Republic of ChinaCorrespondence: Yanping Miao, Email [email protected]
sj-pdf-2-imr-10.1177_03000605231213221 - Supplemental material for Diagnostic value of a logistic model of occupational lead poisoning using hematological parameters
No full textSupplemental material, sj-pdf-2-imr-10.1177_03000605231213221 for Diagnostic value of a logistic model of occupational lead poisoning using hematological parameters by Guokang Sun, Pinpin Xiang, Yiping Chen, Zheng Li, Bo Wu, Yanping Rao and Zheng Zhu in Journal of International Medical Research</p
Supplemental Material, sj-tif-1-cll-10.1177_09636897211055046 - Systematic Analyses of a Chemokine Family-Based Risk Model Predicting Clinical Outcome and Immunotherapy Response in Lung Adenocarcinoma
No full textSupplemental Material, sj-tif-1-cll-10.1177_09636897211055046 for Systematic Analyses of a Chemokine Family-Based Risk Model Predicting Clinical Outcome and Immunotherapy Response in Lung Adenocarcinoma by Jiarui Chen, Xingyu Liu, Qiuji Wu, Xueping Jiang, Zihang Zeng, Jiali Li, Yanping Gao, Yan Gong and Conghua Xie in Cell Transplantation</p
sj-pdf-1-imr-10.1177_03000605231213221 - Supplemental material for Diagnostic value of a logistic model of occupational lead poisoning using hematological parameters
No full textSupplemental material, sj-pdf-1-imr-10.1177_03000605231213221 for Diagnostic value of a logistic model of occupational lead poisoning using hematological parameters by Guokang Sun, Pinpin Xiang, Yiping Chen, Zheng Li, Bo Wu, Yanping Rao and Zheng Zhu in Journal of International Medical Research</p
Charging unplugged: Will distributed laser charging for mobile wireless power transfer work?
No full textIncreasing the battery-recharge period of smartphones is becoming a challenge since their power consumption is increased as a result of enhanced functions that require sophisticated multimedia signal processing. An attractive solution is constituted by wireless charging, which is capable of replenishing the battery over the ether. Given this motivation, we present the fundamental physics and the related system structure of a promising wireless charging technique, i.e., distributed laser charging (DLC). Relying on DLC's unique features, we may be capable of transmitting approximately 2 W of power up to a distance of about 10 m. Following the comparison of the other three major wireless charging techniques, i.e., inductive coupling, magnetic resonance coupling, and microwave radiation, we demonstrate the benefits of DLC in the context of mobile applications. We then propose a pair of wireless charging network architectures, i.e., a DLC-aided, infrastructure-based network and a DLC-based ad-hoc network. These network architectures illustrate the potential of DLC in realizing the fully charged utopia for any device, anywhere, and anytime
One Hundred Days of Coronavirus Disease 2019 Prevention and Control in China
No full textAuteurs : Lei Zhou, Zunyou Wu, Zhongjie Li, Yanping Zhang, Jennifer M McGoogan, Qun Li, Xiaoping Dong, Ruiqi Ren, Luzhao Feng, Xiaopeng Qi, Jingjing Xi, Ying Cui, Wenjie Tan, Guoqing Shi, Guizhen Wu, Wenbo Xu, Xiaoqi Wang, Jiaqi Ma, Xuemei Su, Zijian Feng, George F Gao, China COVID-19 Task Force Production : Clinical Infectious Diseases, une revue médicale à comité de lecture publiée par Oxford University Press couvrant la recherche sur la pathogenèse, l'investigation clinique, la microbiol..
Multiscale asymptotic method for Steklov eigenvalue equations in composite media
No full textAuthor name used in this publication: Yanping Lin2012-2013 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishedVoR allowe
Developing finite element methods for maxwell's equations in a cole-cole dispersive medium
No full textAuthor name used in this publication: Yanping Lin2011-2012 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishedVoR allowe
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