Results 131 to 140 of about 439,053 (379)

Espectrometria de massas com ionização por "electrospray": processos químicos envolvidos na formação de íons de substâncias orgânicas de baixo peso molecular

open access: yesQuímica Nova, 2006
An overview of the current literature on the chemical processes involved in the ion formation from low molecular weight organic compounds by electrospray ionization mass spectrometry is given.
Crotti Antônio Eduardo Miller   +3 more
doaj  

Further characterization of glycine-containing microcystins from the McMurdo Dry Valleys of Antarctica [PDF]

open access: yes, 2015
Microcystins are hepatotoxic cyclic peptides produced by several cyanobacterial genera worldwide. In 2008, our research group identified eight new glycine-containing microcystin congeners in two hydro-terrestrial mat samples from the McMurdo Dry Valleys ...
Cary, S. Craig   +5 more
core   +3 more sources

Artificial Intelligent‐Enhanced Metabolite Profiling for Intraoperative IDH1 Genotyping in Glioma Using an Orthogonally Responsive SERS Probe

open access: yesAdvanced Science, EarlyView.
This study presents a novel approach for intraoperative identification of the IDH1 genotype in glioma patients using a surface‐enhanced Raman scattering (SERS) probe to measure glutathione and hydrogen peroxide. By integrating AI‐driven deep learning algorithms, the method achieves rapid and accurate genotype differentiation, offering the potential to ...
Hang Yin   +14 more
wiley   +1 more source

Isotope Techniques in Chemical Wastewater Treatment: Opportunities and Uncertainties

open access: yesAngewandte Chemie, EarlyView.
In this review, we would first introduce basic knowledge about isotopic compounds and then scrutinize the physical and chemical influence induced by isotope changes. Special attention will be paid to the uncertainties in explaining the isotope results.
Hongyu Zhou   +7 more
wiley   +2 more sources

Revisiting Membrane‐Free Zn–Mn Redox Flow Batteries: An Innovative Universal Aspartic Acid Additive for Superior Stability

open access: yesAdvanced Energy Materials, EarlyView.
An all‐aqueous, membrane‐free Zn–Mn redox flow battery utilizing deposition chemistry can be a promising alternative to conventional aqueous redox flow systems. Since it uses a combined electrolyte in which the catholyte and anolyte are mixed, issues affecting both the cathode and anode can be addressed simultaneously with the simple addition of an ...
Hyeokjun Jang   +7 more
wiley   +1 more source

The Interplay Between Component Denticity and Flexibility Promotes the Formation of [AgI⋅⋅⋅AgI]‐stabilised Links and Knots

open access: yesAngewandte Chemie, EarlyView.
The interplay between the diamine‘s flexibility and the coordination domain‘s denticity governed the self‐assembly of four distinct [AgI⋅⋅⋅AgI]‐stabilised architectures. Reactions with 2,6‐diformylpyridine produced molecular tweezer, trefoil knot, and Solomon link, while 1,8‐naphthyridine‐based dialdehyde promoted the formation of [2]catenanes and ...
Aleksandra Sarwa   +6 more
wiley   +2 more sources

Determination of serum cortisol by isotope-dilution liquid-chromatography electrospray ionization tandem mass spectrometry with on-line extraction [PDF]

open access: yes, 2001
A liquid chromatographic-mass spectrometric method for the determination of cortisol in serum using atmospheric pressure electrospray ionization and tandem mass spectrometry is described.
Briegel, Josef   +2 more
core   +1 more source

Circularly Polarized Luminescence Inversion in AIE‐Active Crystal Enabled by Solvent‐Induced Transition Dipole Moment Regulation

open access: yesAggregate, EarlyView.
Crystals of chiral AIEgens exhibit achiral solvent‐induced CPL sign inversion with good optical waveguide properties, while the same helical structure and molecular chirality are retained in the crystalline state. Nonbonding interactions between the cocrystallized solvent molecules and AIEgens affect the θμ,m (S1 → S0) of electric and magnetic ...
Xiaofei Niu   +13 more
wiley   +1 more source

Cocrystallization of Binary Silver Clusters Into Supramolecular Assembly to Regulate Aggregation‐Induced Emission and Thermally Activated Delayed Fluorescence

open access: yesAggregate, EarlyView.
Cocrystallizing Ag6 and Ag11 structures into supramolecular assembly in a 1: 2 ratio results in a binary tricluster Ag6·(Ag11)2, exhibiting both significant AIE and TADF properties. The separated two unitary Ag11 clusters confirm the critical role of Ag11 structures in AIE and TADF behavior, which are regulated by intercluster interactions and ...
Wei‐Yi Liang   +6 more
wiley   +1 more source

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