Results 81 to 90 of about 459,634 (341)

Ammonia gas: an improved reagent for chemical ionization mass spectrometry of bile acid methyl ester acetates

Journal of Lipid Research, 1981
The ammonia chemical ionization mass spectra of 28 methyl ester acetate derivatives of bile acids and related compounds have been determined by gas-liquid chromatography-mass spectrometry.
B R DeMark, P D Klein
doaj  

Gas chromatography - Mass spectrometry

, 2012
Podeu consultar el llibre complet a: http://hdl.handle.net/2445 ...
Berdié Rabanaque, Lourdes, Fernández Vidal, Irene, Teixidor Casamitjana, Pilar   +2 more
openaire   +1 more source

Thiol‐Modulation‐Induced Mesoporous Nanosheets with an Alloy/Intermetallic Heterophase for Efficient Electrochemical Ethylene Glycol‐Assisted Water Splitting

Advanced Functional Materials, EarlyView.
Sulfur‐capped mesoporous PtPbBi nanosheets (S‐PtPbBi MNSs) with an alloy/intermetallic compound heterophase and inhomogeneous tensile strain (≈3%) were synthesized by a thiol modification strategy, which exhibited excellent electrocatalytic performance for ethylene glycol oxidation reaction (EGOR).
Fukai Feng, Sumei Han, Chaoqun Ma, Xiao Ma, Gang Lin, Huaifang Zhang, Caihong He, Xinran Jiao, Xiangmin Meng, Wenbin Cao, Chongyi Ling, Lijie Zhu, Jing Xia, Qinbai Yun, Qipeng Lu   +14 more
wiley   +1 more source

Multifunctional Polyfluoride Ionogel‐Encapsulated Lithium Anodes for Durable and Safe Pouch Cells under Harsh Conditions

Advanced Functional Materials, EarlyView.
In this work, it is developed a multifunctional polyfluoride ionogel via in situ thermal polymerization to encapsulate lithium metal anodes, integrating flame‐retardant capability, hydrophobicity, dynamic self‐healing behavior, and high ionic conductivity.
Ting Li, Anjun Hu, Yuanjian Li, Borui Yang, Kun Li, Kai Chen, Jingyun Jiang, Fei Li, Zhi Wei Seh, Jian Wang, Jianping Long   +10 more
wiley   +1 more source

Untargeted Soil Metabolomics Using Liquid Chromatography–Mass Spectrometry and Gas Chromatography–Mass Spectrometry [PDF]

, 2018
The molecular composition of soil organic matter (SOM) sets the foundation for terrestrial microbial community structures and carbon cycling dynamics. However, the specific chemical constituents of SOM are underexplored. In this chapter we present a protocol for the extraction of small molecule metabolites from soil followed by compound detection and ...
Tami L. Swenson, Trent R. Northen, Trent R. Northen   +2 more
openaire   +4 more sources

Covalent Adaptable Networks with Associative Siloxane Exchange Enabled by Amide‐Based Internal Catalysis: Designing for Reprocessability and Extrudability by Increasing the Cross‐Link Density

Advanced Functional Materials, EarlyView.
Internally catalyzed siloxane dynamic chemistry is demonstrated resulting from amides covalently linked through alkyl chains to siloxanes. The alkyl length in the siloxane‐containing monomer tunes the network cross‐link density. Siloxane exchange dynamics are faster with increasing cross‐link density, because associative exchange is second order in ...
Nathan S. Purwanto, Tong Wang, Xiaoyang Liu, Linda J. Broadbelt, Tapas Debsharma, John M. Torkelson   +5 more
wiley   +1 more source

Comparison among single-phase test, automated screening method and GC/MS for the traceability of ketamine in urine

Epidemiology, Biostatistics and Public Health, 2016
BACKGROUND The use of ketamine, for non-medical purpose, results widespread also in Italy. This drug is not searched by institutional centers, charged of the responsibility to realize the execution of toxicological analysis based on the article 187 of ...
Alice Visione, Giovanni Michele Lagravinese   +1 more
doaj   +1 more source

Metal‐Organic Nanosheet Gels: Hierarchically Porous Materials for Selective Loading and Differential Release

Advanced Functional Materials, EarlyView.
A suspension of metal‐organic nanosheets was centrifuged to form self‐healing gels with a hierarchically porous structure. The prepared gels were used to selectively capture small molecules from solutions and differentially release them based on their size and charge. Abstract Metal‐organic nanosheets (MONs) are intrinsically porous 2D materials with a
Jiangtian Tan, Jonathan A. Foster
wiley   +1 more source

Analysis of human skin emanations by gas chromatography/mass spectrometry. 2. Identification of volatile compounds that are candidate attractants for the yellow fever mosquito (Aedes aegypti).

Analytical Chemistry, 2000
Volatile compounds emanated from human skin were studied by gas chromatography/mass spectrometry (GC/MS). The purpose of this study was to identify compounds that may be human-produced kairomones which are used for host location by the mosquito, Aedes ...
Ulrich R. Bernier, Daniel L. Kline, Donald R. Barnard, Carl E. Schreck, Richard A. Yost   +4 more
semanticscholar   +1 more source

Highly Sensitive Electrochemical Biosensor Based on Hairy Particles with Controllable High Enzyme Loading and Activity

Advanced Functional Materials, EarlyView.
For the first time, a highly sensitive electrochemical biosensor based on SiO2‐based hairy particles with a grafted PDMAEMA polymer brush containing a quantifiable and large amount of immobilized Laccase is reported. The fabricated biosensor exhibits a sensitivity of 0.14 A·m⁻¹, a limit of detection (LOD) of 0.1 µm, and a detection range of 0.3–750 µm,
Pavel Milkin, Anila Antony, Hongtao Cai, Antonia Debevc, Ceyda Topal, Anne Linhardt, Alla Synytska, Leonid Ionov   +7 more
wiley   +1 more source