Results 21 to 30 of about 402,101 (149)

Bridging the divide in language and approach between pedagogy and programming: the case of IMS Learning Design [PDF]

, 2008
Even though the IMS Learning Design (IMS LD) specification has offered a way for expressing multiple-learner scenarios, the language thus provided is far from the language, teaching practitioners use.
Oberhuemer, Petra, Neumann, Susanne
core   +5 more sources

Research Progress in the Application of Gas Chromatography-Ion Mobility Spectrometry in Food Authentication [PDF]

Shipin Kexue
Gas chromatography-ion mobility spectrometry (GC-IMS) is a sensitive analytical technology for the detection, identification and monitoring of trace substances in different matrices, which enables secondary rapid separation and high-precision qualitative
ZHANG Biying, SUI Yumeng, ZHANG Xin, LI Yongjie, KONG Baohua, LIU Haotian, CHEN Qian
doaj   +1 more source

The Discrimination and Characterization of Volatile Organic Compounds in Different Areas of Zanthoxylum bungeanum Pericarps and Leaves by HS-GC-IMS and HS-SPME-GC-MS

Foods, 2022
The pericarps of Zanthoxylum bungeanum (ZBP) and leaves of Zanthoxylum bungeanum (ZBL) are popular spices in China, and they have pharmacological activities as well.
Xinlong Wu, Jiaxin Yin, Hui Ding, Wei Li, Lifeng Han, Wenzhi Yang, Fangyi Li, Xinbo Song, Songtao Bie, Xingchu Gong, Heshui Yu, Zheng Li   +11 more
doaj   +1 more source

Characterization of volatile metabolites in Pu-erh teas with different storage years by combining GC-E-Nose, GC–MS, and GC-IMS

Food Chemistry: X, 2023
Storage time is one of the important factors affecting the aroma quality of Pu-erh tea. In this study, the dynamic changes of volatile profiles of Pu-erh teas stored for different years were investigated by combining gas chromatography electronic nose ...
Yuting Rong, Jialing Xie, Haibo Yuan, Lilei Wang, Fuqiao Liu, Yuliang Deng, Yongwen Jiang, Yanqin Yang   +7 more
doaj   +1 more source

Analyzing changes of volatile components in dried pork slice by gas chromatography-ion mobility spectroscopy

CyTA - Journal of Food, 2020
The volatile organic compounds (VOCs) in different processing stages of dried pork slices (DPS) were analyzed by gas chromatography-ion mobility spectrometry (GC-IMS), which was used to construct the GC-IMS odor fingerprint spectrometry.
Mingjie Chen, Tong Chen, Xingpu Qi, Daoli Lu, Bin Chen   +4 more
doaj   +1 more source

Combined LC-MS-based metabolomics and GC-IMS analysis reveal changes in chemical components and aroma components of Jujube leaf tea during processing

Frontiers in Plant Science, 2023
Making tea from jujube leaves changed the chemical composition and aroma composition of jujube leaves. Here, Through LC-MS, GC-IMS, and GC-MS technology, we have revealed the effect of jujube leaf processing changes on metabolites.
Nan Jiang, Nan Jiang, Shujuan Hou, Yuye Liu, Peixing Ren, Nuoyu Xie, Ye Yuan, Qing Hao, Mengjun Liu, Mengjun Liu, Zhihui Zhao, Zhihui Zhao, Zhihui Zhao   +12 more
doaj   +1 more source

Identification of Characteristic Flavor Substances of Jingyang Fu Brick Tea by Gas Chromatography-Ion Mobility Spectrometry and Headspace Solid Phase Microextraction-Gas Chromatography-Mass Spectrometry [PDF]

Shipin Kexue, 2023
In order to determine the characteristic flavor of Jingyang Fu brick tea, a national geographical indication product, the volatile compounds of Jingyang Fu brick tea, Anhua Fu brick tea and four other dark teas were analyzed by gas chromatography-ion ...
HOU Xiaohui, ZHANG Ting, ZHANG Meng, LUO Haojie, YUE Yuan, XIAO Chunge, YUE Tianli
doaj   +1 more source

IMS Based Mobile Presence Service. [PDF]

, 2008
One of the key factors associated with mobile data services is the ability to provide greater contextualization of user activity through information such as personal presence.
Lei, Zhang, Coulton, Paul
core   +4 more sources

Application of Gas Chromatography-Ion Mobility Spectroscopy for Honey Quality Evaluation

Shipin gongye ke-ji
Honey is rich in nutrients and has a wide range of biological activities. However, due to the different botanical origins, geographical origins, entomological origins, and maturity, honey shows significant differences in their endogenous compositions and
Daoqi LONG, Zhenping LIU, Fangyuan GAN, Xuejian ZHANG, Xiaohua XIA, Rong JIANG, Kejing PANG, Qingyu NIE   +7 more
doaj   +1 more source

Comparison of the applications of GC-IMS and SPME-GC-MS in the analysis of volatile flavor compounds in strong-flavor Baijiu [PDF]

Zhongguo niangzao
In order to compare the application differences of solid-phase microextraction-gas chromatography-mass spectrometry (SPME-GC-MS) and gas chromatography-ion mobility spectrometry (GC-IMS) techniques in the detection of flavor compounds in strong-flavor ...
WANG Yihong, ZHENG Jia, ZHU Lizheng, PU Peijuan, WU Yuanxin, YUAN Fang
doaj   +1 more source