Results 91 to 100 of about 16,321,452 (239)

Propionsav származékok hatóanyag - és szennyező tartalmának meghatározása GC-MS módszerrel

, 2013
DMB-S-MMP minták hatóanyag tartalmának vizsgálata GC-MS módszerrel. Agilent HP-1MS és HP-5MS kolonnák felhasználásával kapott kromatogramok összehasonlítása. A TEVA Gyógyszergyár Zrt.
Miskolczi, Janka
core  

Gradient‐Conductivity Architecture Enables Synchronous Enhancement of Sensitivity and Detection Range in Multifunctional All‐Paper Sensors

Advanced Functional Materials, EarlyView.
A gradient‐engineered all‐paper sensor is fabricated by integrating MXene and in situ grown AgNPs within hierarchical cellulose networks. The device breaks the sensitivity–detection range trade‐off through cascaded conductive pathways, enabling ultrahigh pressure sensitivity, humidity–pressure decoupled dual‐mode sensing, and outstanding EMI shielding,
Ao Li, Jun Xu, Dezhong Xu, Zhaohui Zhang, Jiyi Li, Daxian Cao, Kefu Chen, Mizi Fan   +7 more
wiley   +1 more source

Influência da amostragem e do tempo de armazenamento de resíduos de incêndios sobre a detecção de agentes acelerantes usando SPMEGC- MS [PDF]

, 2005
TCC (graduação) - Universidade Federal de Santa Catarina. Centro de Ciências Físicas e Matemáticas. Curso de Química.Este trabalho teve como objetivo avaliar a aplicação da microextração em fase sólida (SPME) na determinação de resíduos de líquidos ...
FERNANDES, Maria Eulália
core  

Identification of Key Aroma-Active Compounds in Plum, Jujube, and Grape Extracts via GC×GC-O-TOF-MS, GC-MS, Aroma Recombination and Omission Tests

Separations
Fruity natural flavors are widely used in food, cosmetics, and tobacco products, and their flavor profiles directly affect the sensory quality of the final products.
Ruiyang Chen, Qinghui Jia, Anzhen Fu, Fan Yang, Yixin Dai, Jingzhe Sun, Liya Liu, Ye Liu, Shuang Bi   +8 more
doaj   +1 more source

Mechanical Programming of PEGDA‐β‐CD Polyrotaxane‐Based Hydrogels via Host–Guest Molecular Recognition

Advanced Functional Materials, EarlyView.
A mechanically programmable hydrogel for tissue engineering is developed by modulating the molecular threading density of poly(ethylene glycol) diacrylate‐β‐cyclodextrin (PEGDA‐β‐CD) polyrotaxane and combining it with β‐CD‐modified gelatin. The polyrotaxane‐guided transition from disordered pores to laminar microstructures enables precise tuning ...
Shiyi Chen, Xudan Xing, Haopu Su, Dominik Voll, Xiaohe Xu, Jiafeng Wan, Tongtong Cui, Christian W. Schmitt, Stefan Bräse, Peng Li, Patrick Théato   +10 more
wiley   +1 more source

GC-MS and DART-MS study of essential oils of spices

, 2016
In this study, we applied certain analytical techniques in the analysis of three aromatic plants belonging to the Apiaceae (Umbelliferae) family: Petroselinum crispum (Parsley), Anethum graveolens (Dill) and Apium graveolens (Celery).
Jibrin, Sadiq Garba
core  

CO2‐to‐CO Conversion in a Gas‐Fed, Zero‐Gap, PEM Electrolyzer Enabled by Polycations and Nitrogen‐Doped Carbon‐Supported Cobalt Nanoparticles

Advanced Functional Materials, EarlyView.
A gas‐fed, zero‐gap, PEM CO2 electrolyzer is realized by incorporating PDDA+ ions onto the carbonaceous Co/N‐C electrocatalyst, with gaseous H2 and CO2 fed into the anode and cathode, respectively. Operating without an aqueous electrolyte, the system sustains a peak FECO of 65.1% at 100 mA cm−2. ABSTRACT Electrochemical carbon dioxide reduction (ECO2R)
Yuen Leong Chow, Hsi‐Wen Wu, Aimin Li, Yalou Guo, Duhong Chen, Jie Zhang, Paul A. Webley   +6 more
wiley   +1 more source

Comprehensive sensory and chemical data on the flavor of 16 red wines from two varieties: Sensory descriptive analysis, HS-SPME-GC-MS volatile compounds quantitative analysis, and odor-active compounds identification by HS-SPME-GC-MS-O

Data in Brief, 2019
This paper describes data collected on 2 sets of 8 French red wines from two grape varieties: Pinot Noir (PN) and Cabernet Franc (CF). It provides, for the 16 wines, (i) sensory descriptive data obtained with a trained panel, (ii) volatile organic ...
Angélique Villière, Ronan Symoneaux, Alice Roche, Aïda Eslami, Nathalie Perrot, Yves Le Fur, Carole Prost, Philippe Courcoux, Evelyne Vigneau, Thierry Thomas-Danguin, Laurence Guérin   +10 more
doaj   +1 more source

Rapid Microwave Plasma Engineering of HfO2/C@C Core‐Shell Fibrous Membrane Toward Flexible High‐Performance Electromagnetic Wave Absorption

Advanced Functional Materials, EarlyView.
Rapid microwave plasma torch engineering tunes crystal phases, carbon graphitization and oxygen‐vacancy defects in HfO2/C@C core‐shell fibrous membranes. Synergistic multi‐loss effects optimize impedance matching to deliver −65.75 dB reflection loss and a 7.37 GHz effective bandwidth for flexible electromagnetic wave absorption.
Qichao Ding, Limeng Song, Wei Li, Jiangtao Hao, Xuewen Jiang, Mengru Li, Xinglai Yuan, Gang Wang, Yanqiu Zhu, Mi Tian, Hailong Wang, Hongxia Li, Biao Zhao, Rui Zhang, Bingbing Fan   +14 more
wiley   +1 more source

Analysis of the Major Characteristic Aroma Compounds in Different Grades of Jingshan Tea [PDF]

Chaye kexue
To characterize the difference of odorants among different grades of Jingshan tea, we investigated the super grade, the first grade, the second grade and the third grade of Jingshan tea by stir bar sorptive extraction gas chromatography-mass spectrometry
ZHANG Huiyuan, MA Kuan, GAO Jing, JIN Yugu, WANG Yujie, SU Zhucheng, NING Jingming, CHEN Hongping, HOU Zhiwei
doaj   +1 more source