Results 1 to 10 of about 12,665 (217)

On (semi)topology L-algebras [PDF]

open access: yesCategories and General Algebraic Structures with Applications, 2023
Here, we define (semi)topological L-algebras and some related results are approved. Then we deduce conditions that mention an L-algebra to be a semi-topological or a topological L-algebra and we check some attributes of them.
Mona Aaly Kologani
doaj   +1 more source

The 100th anniversary of fractal geometry: From Julia and Fatou through Hausdorff and Besicovitch to Mandelbrot [PDF]

open access: yesИзвестия высших учебных заведений: Прикладная нелинейная динамика, 2020
The purpose of this article is to present the biographies of the main creators of fractal geometry from the moment the first ideas arose, when the term «fractal» did not exist, to the present day.
Vdovina, Galina Mihajlovna   +1 more
doaj   +1 more source

Plane Parallel Barrier Discharges for Carbon Dioxide Splitting: Influence of Discharge Arrangement on Carbon Monoxide Formation

open access: yesPlasma, 2023
A planar volume dielectric barrier discharge (DBD) in pure carbon dioxide (CO2) for the formation of carbon monoxide (CO) is examined by combined electrical and CO density measurements.
Ronny Brandenburg   +5 more
doaj   +1 more source

Assessment of Phycocyanin Extraction from Cyanidium caldarium by Spark Discharges, Compared to Freeze-Thaw Cycles, Sonication, and Pulsed Electric Fields

open access: yesMicroorganisms, 2021
Phycocyanin is a blue colored pigment, synthesized by several species of cyanobacteria and red algae. Besides the application as a food-colorant, the pigmented protein is of high interest as a pharmaceutically and nutritionally valuable compound.
Marie-Christine Sommer   +5 more
doaj   +1 more source

Inspired by Nature—Functional Analogues of Molybdenum and Tungsten-Dependent Oxidoreductases

open access: yesMolecules, 2022
Throughout the previous ten years many scientists took inspiration from natural molybdenum and tungsten-dependent oxidoreductases to build functional active site analogues.
Sebastian Pätsch   +4 more
doaj   +1 more source

Influence of plasma-treated air on surface microbial communities on freshly harvested lettuce

open access: yesCurrent Research in Food Science, 2023
Plant-based foods like lettuce are an important part of the human diet and worldwide industry. On a global scale, the number of food-associated illnesses increased in the last decades.
Hauke Winter   +4 more
doaj   +1 more source

A Mixed-Valence Tetra-Nuclear Nickel Dithiolene Complex: Synthesis, Crystal Structure, and the Lability of Its Nickel Sulfur Bonds

open access: yesInorganics, 2020
In this study, by employing a common synthetic protocol, an unusual and unexpected tetra-nuclear nickel dithiolene complex was obtained. The synthesis of the [Ni4(ecpdt)6]2− dianion (ecpdt = (Z)-3-ethoxy-3-oxo-1-phenylprop-1-ene-1,2-bis-thiolate) with ...
Mohsen Ahmadi   +3 more
doaj   +1 more source

Structural Basis for (2R,3R)-Taxifolin Binding and Reaction Products to the Bacterial Chalcone Isomerase of Eubacterium ramulus

open access: yesMolecules, 2022
The bacterial chalcone isomerase (CHI) from Eubacterium ramulus catalyses the first step in a flavanone-degradation pathway by a reverse Michael addition.
Gottfried J. Palm   +3 more
doaj   +1 more source

Combining a Low Valent Molybdenum(0) Center with a Strongly σ-Donating Mesoionic Carbene Chelate Ligand—Synthesis and Structural Characterization

open access: yesInorganics, 2022
Triazolylidene ligands belong to a class of N-heterocyclic carbenes of growing chemical interest. Their precursors are readily available using Click chemistry and, therefore, highly modular for tuning their electronic characteristics.
Benedict Josua Elvers   +4 more
doaj   +1 more source

Coupling Pyrazine to Dithiocarbonates for Molybdopterin Model Ligands—Indispensable Tin

open access: yesInorganics, 2023
Several synthetic cross-coupling procedures were (re-)evaluated for the tethering of pyrazine to dithiocarbonates. The resultant species constitute pro-ligands and can be converted by removal of the C=O moiety into ene-dithiolate ligand systems that ...
Siva Sankar Murthy Bandaru   +3 more
doaj   +1 more source

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