Results 41 to 50 of about 100,661 (193)

On the Dynamics of Euclidean Space–Time at the Planck Scale

open access: yesReports in Advances of Physical Sciences, 2022
In this study, a radical hypothesis concerning the wave-particle duality exhibited by extremely small objects in nature is explored by developing a Planck lattice model of space–time that grapples with the uncertain dynamic quantum structure of space ...
Lewis Nash
doaj   +1 more source

Refinement of amino‐acid conformation vs. difference density maps in time‐resolved serial femtosecond crystallography data analysis

open access: yesFEBS Open Bio, EarlyView.
The dFoCC pipeline starts with observed DED and resting‐state coordinates, which are then used to generate a library of triggered states. Correlation analysis of the calculated DED features of each candidate vs observed DED permits quantitative evaluation of candidate structural quality.
Meng Iao Fong   +3 more
wiley   +1 more source

Quantum-Enhanced K-Medoids Clustering: Comparative Analysis of Stroke Medical Data

open access: yesJurnal RESTI (Rekayasa Sistem dan Teknologi Informasi)
Stroke is a severe medical condition that occurs when the blood supply to parts of the brain is interrupted or reduced, resulting in brain tissue that lacks oxygen and nutrients. This causes brain cells to start to die in minutes.
Ricardo Siahaan   +4 more
doaj   +1 more source

The crystal structure of the Borrelia burgdorferi nicotinamidase BBE22 resolves a long‐standing annotation error

open access: yesFEBS Open Bio, EarlyView.
The crystal structure of Borrelia burgdorferi nicotinamidase (PncA/BBE22) reveals the correct full‐length protein initiated from a non‐canonical AUU start codon. The structure validates previous biochemical findings and resolves a long‐standing annotation error, demonstrating that the truncated database sequence is structurally incompatible with the ...
Kalvis Brangulis
wiley   +1 more source

On the Existence Problem of Finite Bases of Identities in the Algebras of Recursive Functions

open access: yesМоделирование и анализ информационных систем, 2020
Raphael Robinson showed that all primitive recursive functions depending on one argument, and only they could be obtained from two functions s(x) = x +1 and q(x) = x - [√x]² by using operations of addition +, superposition ∗ and iteration i.
Valery A. Sokolov
doaj   +1 more source

Heterotropic regulation and negative homotropic cooperativity

open access: yesFEBS Open Bio, EarlyView.
We identified a structural module common to some proteins that couple negative cooperativity with heterotropic regulation, two features that rarely coexist. These proteins are ring‐like and present an ordered asymmetry whereby noncontacting subunits are symmetric, and their tertiary structure differs from that of contacting subunits.
Veronica Morea   +5 more
wiley   +1 more source

Crystal structures and Hirshfeld surface analyses of diphenylmethyl 2-(3,5-dimethoxyphenyl)acetate and diphenylmethyl 2-(3,4,5-trimethoxyphenyl)acetate

open access: yesActa Crystallographica Section E: Crystallographic Communications
The title compounds, C23H22O4, (I), and C24H24O5, (II), differ in the presence of a methoxy group instead of a hydrogen atom between two methoxy groups attached to the phenyl ring of the phenyl acetate moiety, which affects not only the symmetry and ...
Manivel Kavitha   +5 more
doaj   +1 more source

Corrigendum to: V. A. Sokolov, “On the Existence Problem of Finite Bases of Identities in the Algebras of Recursive Functions”, Modeling and analysis of information systems, vol. 27, no. 3, pp. 304-315, 2020. DOI: https://doi.org/10.18255/1818-1015-2020-3-304-315

open access: yesМоделирование и анализ информационных систем, 2020
The author regrets that in the original list the references [3] and [4] are in the wrong places and they should be rearranged. In addition, [3] has the wrong article title.
Valery Anatolyevich Sokolov
doaj   +1 more source

Generalized superposition

open access: yesInformation and Control, 1967
Die Arbeit behandelt die Klassifizierung einer großen Anzahl nichtlinearer Systeme. Jede Klasse wird dabei durch ein Prinzip definiert, das dem Superpositionsprinzip für lineare Systeme ähnlich ist. Dann hat jede Kiasse eine kanonische Darstellung, die ein lineares System enthält, and Systeme innerhalb einer Klasse unterscheiden sich nur im linearen ...
openaire   +1 more source

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

open access: yesAdvanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios   +5 more
wiley   +1 more source

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