Results 51 to 60 of about 36,507 (220)

Síntese one-pot de a-arilideno- ð-lactonas a partir de brometos alílicos funcionalizados : estudo das etapas reacionais e caracterização dos intermediários [PDF]

open access: yes, 2014
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Programa de Pós-Graduação em Química, Florianópolis, 2014Neste trabalho foi estudada a síntese de a-arilideno-ð-lactonas utilizando alguns dos ...
Conceição, Henrique Pinheiro da
core  

Molecular dynamics simulations of positively selected codons in FcγRI reveal novel biochemical binding properties

open access: yesFEBS Open Bio, EarlyView.
Evolutionary analysis across 32 placental mammals identified positive selection at residues H148 and W149 in the immune receptor FcγR1. Ancestral reconstruction combined with molecular dynamics simulations reveals how these mutations may influence receptor structure and dynamics, providing insight into the evolution of antibody recognition and immune ...
David A. Young   +7 more
wiley   +1 more source

Four-dimensional generalized difference matrix and some double sequence spaces

open access: yesJournal of Inequalities and Applications, 2017
In this study, I introduce some new double sequence spaces B ( M u ) $B(\mathcal {M}_{u})$ , B ( C p ) $B(\mathcal{C}_{p})$ , B ( C b p ) $B(\mathcal{C}_{bp})$ , B ( C r ) $B(\mathcal {C}_{r})$ and B ( L q ) $B(\mathcal{L}_{q})$ as the domain of four ...
Orhan Tuǧ
doaj   +1 more source

Emerging insights into CC and CXC chemokines and their receptors in Mycobacterium tuberculosis infection

open access: yesFEBS Open Bio, EarlyView.
The dual roles of CC and CXC chemokines in distinguishing active, latent, and subclinical tuberculosis were reviewed, along with an evaluation of their potential as diagnostic biomarkers and therapeutic targets to advance precision medicine in tuberculosis management. The graphical abstract was generated with AI assistance (Gemini 3.0).
Xuying Yin, Dangsheng Xiao, Jiezuan Yang
wiley   +1 more source

β-Methoxy-γ-methylene-α,β-unsaturated-γ-butyrolactones from Artabotrys hexapetalus

open access: yes, 2002
The dichloromethane extract of the aerial parts of Artabotrys hexapetalus afforded three β-methoxy-γ-methylene-α,β-unsaturated-γ-butyrolactones, which are proposed to be derived from a C18 unsaturated fatty acid by a biosynthetic route similar to that ...
Brown, GD, Wong, HF
core   +1 more source

Regio‐ and Enantioselective α,γ‐Dialkylation of α,β‐Unsaturated Aldehydes Through Cascade Organocatalysis

open access: yes, 2020
The first regio- and enantioselective organocatalytic cascade α,γ-dialkylation of α,β-unsaturated aldehydes is achieved. Substrates scope is demonstrated with a variety of α,β-unsaturated aldehydes and alkylating agents. The absolute configuration of the
Venkata M. D. Padmaja   +5 more
core   +1 more source

Rafting of Ni‐Based Superalloys Under Multiaxial Load as Understood by Phase‐Field Simulations and Critical Experiments

open access: yesAdvanced Engineering Materials, EarlyView.
Phase‐field simulations coupled with dislocation‐density‐based crystal plasticity modeling reproduce γ′ rafting behavior in single‐crystal Ni‐based superalloys under varied loading conditions. The model captures both macroscopic creep and microscopic morphology evolution, with results matching high‐temperature creep experiments.
Micheal Younan   +5 more
wiley   +1 more source

Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading

open access: yesAdvanced Engineering Materials, EarlyView.
The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley   +1 more source

Karl Popper and the Mechanisms of Hydrogen Embrittlement

open access: yesAdvanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

On Neutrosophic α(γ,β)-Continuous Functions, Neutrosophic α(γ,β)-Open (Closed) Functions in Neutrosophic Topological Spaces

open access: yes
We explain the neutrosophic α(γ,β)-continuous function in the neutrosophic topological spaces. We analyze their behaviour; study the various relations and properties existing among them.
K. Fayaz Ur Rahman   +2 more
core   +1 more source

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