Results 81 to 90 of about 45,125 (278)

Some neutron and gamma radiation characteristics of plutonium cermet fuel for isotopic power sources [PDF]

open access: yes, 1972
Gamma and neutron measurements on various types of plutonium sources are presented in order to show the effects of O-17, O-18 F-19, Pu-236, age of the fuel, and size of the source on the gamma and neutron spectra.
Anderson, M. E.   +3 more
core   +2 more sources

Dynamic Control of Nucleic Acids Self‐Assembly and Expression Using Photoswitches

open access: yesChemistry – A European Journal, EarlyView.
We review here the recent progress made in the design of molecular photoswitches, and highlight their implementation for the dynamic control over nucleic acids self‐assembly and expression. ABSTRACT Synthetic nucleic acids have become readily available and now constitute versatile building blocks in materials science—where they can be used to engineer ...
Noemí Nogal   +4 more
wiley   +1 more source

Stilbenes: chemistry and pharmacological properties

open access: yesJournal of Applied Pharmaceutical Research, 2015
Medicinal plants are the most important source of life saving drugs for the majority of the Worlds’ population. The compounds which synthesized in the plant from the secondary metabolisms are called secondary metabolites; exhibit a wide array of ...
Chetana Roat, Meenu Saraf
doaj  

Screening of Natural Stilbene Oligomers from Vitis vinifera for Anticancer Activity on Human Hepatocellular Carcinoma Cells

open access: yesAntioxidants, 2020
The characterization of bioactive resveratrol oligomers extracted from Vitis vinifera canes has been recently reported. Here, we screened six of these compounds (ampelopsin A, trans-ε-viniferin, hopeaphenol, isohopeaphenol, R2-viniferin, and R-viniferin)
Iris Aja   +5 more
doaj   +1 more source

Coherent photodissociation reactions: Observation by a novel picosecond polarization technique [PDF]

open access: yes, 1986
In this communication, we wish to report on a novel picosecond polarization method for measuring the degree of rotational coherence that is preserved in photodissociation reactions.
Baskin, J. S., Semmes, D., Zewail, A. H.
core   +1 more source

Energy Landscapes in Chemical Reactions and Transport

open access: yesChemPhysChem, Volume 26, Issue 6, March 15, 2025.
Kinetics/dynamics of chemical reactivity and transport of chemical species in a solid are both determined by the energy landscape in which they take place. Discussing common grounds but also distinct differences may help in advancing the understanding in both fields.
Karl‐Michael Weitzel
wiley   +1 more source

Determining the Effect of Pterostilbene on Insulin Secretion Using Chemoproteomics

open access: yesMolecules, 2020
Pterostilbene, the 3,5-dimethoxy derivative of resveratrol, is a well-known polyphenolic compound, mainly found in blueberries, grapevines, and Pterocarpus marsupium heartwood, which has recently attracted a great deal of attention due to its wide bio ...
Chiara Cassiano   +5 more
doaj   +1 more source

Model-based Design Evaluation of a Compact, High-Efficiency Neutron Scatter Camera

open access: yes, 2017
This paper presents the model-based design and evaluation of an instrument that estimates incident neutron direction using the kinematics of neutron scattering by hydrogen-1 nuclei in an organic scintillator.
Brubaker, Erik   +3 more
core   +1 more source

Mechanochemical Hydrodeoxygenations

open access: yesEuropean Journal of Organic Chemistry, EarlyView.
A silver‐catalyzed mechanochemical hydrodeoxygenation with triethylsilane as reductant allows to convert ketones to the corresponding methylene derivatives in good yields after a short reaction time. Selected examples show that also alcohols, ethers, and sulfoxides can react. In this work, a mechanochemical hydrodeoxygenation (HDO) was developed. Using
Lena M. Hanek, Carsten Bolm
wiley   +1 more source

Synthesis and Reactivity of Iodepinium Salts

open access: yesEuropean Journal of Organic Chemistry, EarlyView.
An efficient oxidative cyclization of (Z)‐iodostilbenes grants access to the long‐elusive class of seven‐membered diaryliodonium salts — the iodepinium triflates. X‐ray analysis reveals their distinctly nonplanar geometry, while reactivity studies uncover unprecedented pathways, including copper‐mediated conversion to phenanthrene and chalcogen‐induced
Jan Rick Koch   +3 more
wiley   +1 more source

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