Results 81 to 90 of about 122,896 (296)

The crystal structure of Pneumolysin at 2.0 Å resolution reveals the molecular packing of the pre-pore complex [PDF]

open access: yes, 2015
Pneumolysin is a cholesterol-dependent cytolysin (CDC) and virulence factor of Streptococcus pneumoniae. It kills cells by forming pores assembled from oligomeric rings in cholesterol-containing membranes.
Andrew, Peter W   +8 more
core   +1 more source

Metformin promotes mitochondrial integrity through AMPK‐signaling in Leber's hereditary optic neuropathy

open access: yesFEBS Open Bio, EarlyView.
Metformin mediates mitochondrial quality control in Leber's hereditary optic neuropathy (LHON) fibroblasts carrying mtDNA mutations. At therapeutic levels, metformin activates AMPK signaling to restore mitochondrial dynamics by promoting fusion and restraining fission, while preserving mitochondrial mass, enhancing autophagy/mitophagy and biogenesis ...
Chatnapa Panusatid   +3 more
wiley   +1 more source

['تعزیز المیکروویف - راتنج الاکریلیک مادة قاعدة أسنان مع الألیاف الزجاجیة', 'Reinforced Microwave - Cured Acrylic Resin Denture Base Material with Glass Fibers']

open access: yesAl-Rafidain Dental Journal, 2010
0.0001)among the four groups and Duncan's multiple range test showed that microwave cured + fibers significantly higher transverse strength followed by heat cured +fibers, microwave alone, while heat alone shows significantly lowest transverse strength ...
Radhwan H. Hasan, Mohammed A Abdulla
doaj  

Effects of composite restorations on oxidative stress in saliva: An in vivo study

open access: yesJournal of Dental Sciences, 2015
Background/purpose: This study is aimed at detecting and quantifying monomers from dental composite filling materials and investigating effects of the released monomers in saliva malondialdehyde (MDA) levels and in two antioxidant enzyme levels after ...
Pinar Gul   +3 more
doaj   +1 more source

Determination of residual monomer content in dental acrylic polymers and effect after tissues implantation

open access: yesBiotechnology & Biotechnological Equipment, 2020
The aim of the present study was to determine the content of residual monomer methyl methacrylate (MMA) in cold and hot polymerized poly(methyl methacrylate) (PMMA), both widely applicable in dentistry, by using MHE-GC-MS (multiple headspace extraction ...
Milena Kostić   +7 more
doaj   +1 more source

Modeling the vapor-liquid equilibrium and association of nitrogen dioxide/dinitrogen tetroxide and its mixtures with carbon dioxide [PDF]

open access: yes, 2008
We have used in this work the crossover soft-SAFT equation of state to model nitrogen dioxide/dinitrogen tetraoxide (NO2/N2O4), carbon dioxide (CO2) and their mixtures.
Belkadi, Abdelkrim   +3 more
core   +1 more source

Enzymatic degradation of biopolymers in amorphous and molten states: mechanisms and applications

open access: yesFEBS Open Bio, EarlyView.
This review explains how polymer morphology and thermal state shape enzymatic degradation pathways, comparing amorphous and molten biopolymer structures. By integrating structure–reactivity principles with insights from thermodynamics and enzyme engineering, it highlights mechanisms that enable efficient polymer breakdown.
Anđela Pustak, Aleksandra Maršavelski
wiley   +1 more source

Local chain ordering in amorphous polymer melts: Influence of chain stiffness

open access: yes, 1999
Molecular dynamics simulation of a generic polymer model is applied to study melts of polymers with different types of intrinsic stiffness. Important static observables of the single chain such as gyration radius or persistence length are determined ...
Faller, Roland   +2 more
core   +1 more source

Residual monomer in denture base acrylic

open access: yes, 2012
published_or_final_version ; Dentistry ; Doctoral ; Doctor of ...
openaire   +2 more sources

Understanding bio‐based polymers: A study of origins, properties, biodegradation and their impact on health and the environment

open access: yesFEBS Open Bio, EarlyView.
This review provides an overview of bio‐based polymer sources, their unique functional properties and their environmental impact, and addresses their role as sustainable alternatives. It discusses end‐of‐life options, including composting and anaerobic digestion for renewable energy.
Sabina Kolbl Repinc   +8 more
wiley   +1 more source

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