Results 141 to 150 of about 724,958 (380)

The Isolation and Spectroscopic Characterization of Products from the Metatheses of Alkyl Oleates [PDF]

open access: yes, 1994
The products from the metathesis reactions of methyl and ethyl oleate were isolated using column chromatography. The various components obtained were characterized using infrared (IR), 1Hand 13C nuclear magnetic resonance spectroscopy (NMR) and gas ...
Buang, Nor Aziah   +2 more
core  

Quantification of bromide ion in biological samples using headspace gas chromatography–mass spectrometry

open access: gold, 2021
Takenori Yamauchi   +4 more
openalex   +1 more source

Identification of CS Degradation Products in Objects Delivered from the Zone of a Special Military Operation

open access: yesВестник войск РХБ защиты
The formation of a CS aerosol during the combustion of a pyrotechnic mixture in gas grenades is accompanied by the formation of numerous thermolytic degradation products.
A. S. Iarlychenko   +3 more
doaj   +1 more source

Peptide Sequencing With Single Acid Resolution Using a Sub‐Nanometer Diameter Pore

open access: yesAdvanced Functional Materials, EarlyView.
To sequence a single molecule of Aβ1−42–sodium dodecyl sulfate (SDS), the aggregate is forced through a sub‐nanopore 0.4 nm in diameter spanning a 4.0 nm thick membrane. The figure is a visual molecular dynamics (VMD) snapshot depicting the translocation of Aβ1−42–SDS through the pore; only the peptide, the SDS, the Na+ (yellow/green) and Cl− (cyan ...
Apurba Paul   +8 more
wiley   +1 more source

Isotope Ratio Monitoring Gas Chromatography Mass Spectrometry (IRM-GCMS) [PDF]

open access: yes
On Earth, the C-13 content of organic compounds is depleted by roughly 13 to 23 permil from atmospheric carbon dioxide. This difference is largely due to isotope effects associated with the fixation of inorganic carbon by photosynthetic organisms.
Freeman, K. H.   +3 more
core   +1 more source

Real-time 2D separation by LC × differential ion mobility hyphenated to mass spectrometry [PDF]

open access: yes, 2018
The liquid chromatography-mass spectrometry (LC-MS) analysis of complex samples such as biological fluid extracts is widespread when searching for new biomarkers as in metabolomics.
Hopfgartner, Gérard   +2 more
core  

Strategic Design of Oxophilic Dopants for Active and Durable Alkaline Hydrogen Evolution Reaction Under Seawater

open access: yesAdvanced Functional Materials, EarlyView.
This study explores a cost‐effective alternative by incorporating oxophilic dopants into non‐precious metal hosts to enhance water dissociation and catalyst stability. Computational screening identified Ni─V, Ni─Mo, and Co─V as top candidates. Subsequent experiments confirmed Ni20V exhibits superior HER activity, achieving 76 mV lower overpotential ...
Hyeonjung Jung   +13 more
wiley   +1 more source

Metabolomics : a tool for studying plant biology [PDF]

open access: yes, 2005
In recent years new technologies have allowed gene expression, protein and metabolite profiles in different tissues and developmental stages to be monitored.
Gullberg, Jonas
core  

Harmonizing the Pyrene and Ether Groups in Covalent Triazine Polymers for Highly Effective H2O2 Photosynthesis via One‐Step Two‐Electron Oxygen Reduction

open access: yesAdvanced Functional Materials, EarlyView.
The pyrene and ether groups are incorporated into the covalent triazine polymer (CTP) structure. The synergistic effect of the two functional groups endows CTP with better electron transfer, light absorption, and oxygen activation properties. An impressive apparent quantum yield (13.2% @420 nm) and a remarkable solar‐to‐chemical conversion efficiency ...
Chong Wang   +10 more
wiley   +1 more source

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