Results 71 to 80 of about 1,114,638 (302)

Revolutionizing organic synthesis through green chemistry: metal-free, bio-based, and microwave-assisted methods

open access: yesFrontiers in Chemistry
The growing emphasis on sustainable development has propelled green chemistry into a vital framework for designing environmentally benign chemical processes.
Sayani Banerjee   +4 more
doaj   +1 more source

Data-Driven Astrochemistry: One Step Further within the Origin of Life Puzzle

open access: yesLife, 2018
Astrochemistry, meteoritics and chemical analytics represent a manifold scientific field, including various disciplines. In this review, clarifications on astrochemistry, comet chemistry, laboratory astrophysics and meteoritic research with respect to ...
Alexander Ruf   +2 more
doaj   +1 more source

Big Data meets Quantum Chemistry Approximations: The $\Delta$-Machine Learning Approach

open access: yes, 2015
Chemically accurate and comprehensive studies of the virtual space of all possible molecules are severely limited by the computational cost of quantum chemistry.
Dral, Pavlo O.   +3 more
core  

Bioavailability of pesticides in freshwater sediments [PDF]

open access: yes, 2007
In ecological risk assessment standardized sediment toxicity tests are used to predict the hazard of chemicals for sediment-living organisms. Feeding is a prerequisite in these long-term tests to avoid starvation of test organisms.
Åkerblom, Nina
core  

The Caenorhabditis elegans DPF‐3 and human DPP4 have tripeptidyl peptidase activity

open access: yesFEBS Letters, EarlyView.
The dipeptidyl peptidase IV (DPPIV) family comprises serine proteases classically defined by their ability to remove dipeptides from the N‐termini of substrates, a feature that gave the family its name. Here, we report the discovery of a previously unrecognized tripeptidyl peptidase activity in DPPIV family members from two different species.
Aditya Trivedi, Rajani Kanth Gudipati
wiley   +1 more source

Flipping the class – University chemistry students’ experiences from a new teaching and learning approach

open access: yesChemistry Teacher International, 2019
University chemistry courses have for a long time had a similar conventional approach to teaching, with chemistry professors lecturing in a traditional manner.
Broman Karolina, Johnels Dan
doaj   +1 more source

When Stereochemistry Raised Its Ugly Head in Coordination Chemistry—An Appreciation of Howard Flack

open access: yesChemistry, 2020
Chiral compounds have played an important role in the development of coordination chemistry. Unlike organic chemistry, where mechanistic rules allowed the establishment of absolute configurations for numerous compounds once a single absolute ...
Edwin C. Constable   +1 more
doaj   +1 more source

Molecular bases of circadian magnesium rhythms across eukaryotes

open access: yesFEBS Letters, EarlyView.
Circadian rhythms in intracellular [Mg2+] exist across eukaryotic kingdoms. Central roles for Mg2+ in metabolism suggest that Mg2+ rhythms could regulate daily cellular energy and metabolism. In this Perspective paper, we propose that ancestral prokaryotic transport proteins could be responsible for mediating Mg2+ rhythms and posit a feedback model ...
Helen K. Feord, Gerben van Ooijen
wiley   +1 more source

Expression and DNA methylation of 20S proteasome subunits as prognostic and resistance markers in cancer

open access: yesMolecular Oncology, EarlyView.
Comprehensive analysis of genomic mutations, gene expression, DNA methylation, and pathway analysis of TCGA data was carried out to define cancer types in which proteasome subunits expression is associated with worse survival. Albeit the effect of specific proteasome subunits on cellular function, the main role of the proteasome is better evaluated ...
Ruba Al‐Abdulla   +5 more
wiley   +1 more source

Dichloromethylation of enones by carbon nitride photocatalysis

open access: yes, 2020
Small organic radicals are ubiquitous intermediates in photocatalysis and are used in organic synthesis to install functional groups and to tune electronic properties and pharmacokinetic parameters of the final molecule.
Antonietti, M.   +4 more
core   +1 more source

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