Results 41 to 50 of about 167,736 (380)

Ultrastructure of the elementary fibril in extended and condensed chromatin and in metaphase chromosomes

open access: yesActa Societatis Botanicorum Poloniae, 2015
The chromatin Ultrastructure of nuclei in ultrathin sections of root meristem in Cucurbita pepo - the species poor in DNA, and in Haemanthus katharinae - rich in DNA was compared.
M. J. Olszewska
doaj   +1 more source

Anti-Caries Effects of Dental Adhesives Containing Quaternary Ammonium Methacrylates with Different Chain Lengths

open access: yesMaterials, 2017
The objectives of this study were to investigate the effects of dental adhesives containing quaternary ammonium methacrylates (QAMs) with different alkyl chain lengths (CL) on ecological caries prevention in vitro.
Q. Han   +14 more
semanticscholar   +1 more source

Cytotoxicity and Pro-/Anti-inflammatory Properties of Cinnamates, Acrylates and Methacrylates Against RAW264.7 Cells

open access: yesIn Vivo, 2018
Background/Aim: Periodontitis is a chronic inflammatory disease linked to various systemic age-related conditions. It is known that α,β-unsaturated carbonyl compounds such as dietary cinnamates (β-phenyl acrylates) and related (meth)acrylates can have ...
Y. Murakami   +3 more
semanticscholar   +1 more source

Influence of incorporation of fluoroalkyl methacrylates on roughness and flexural strength of a denture base acrylic resin [PDF]

open access: yes, 2009
Fluorinated denture base acrylic resins can present more stable physical properties when compared with conventional polymers. This study evaluated the incorporation of a fluoroalkyl methacrylate (FMA) mixture in a denture base material and its effect on ...
BONATTI, Marília Rodrigues   +3 more
core   +4 more sources

Thermal Stability and Kinetics of Thermal Decomposition of Statistical Copolymers of N-Vinylpyrrolidone and Alkyl Methacrylates Synthesized via RAFT Polymerization

open access: yesJournal of Chemistry, 2021
The thermal stability and the kinetics of thermal decomposition of statistical copolymers of N-vinylpyrrolidone (NVP) with the alkyl methacrylates, hexyl methacrylate (HMA) and stearyl methacrylate (SMA), were studied by Thermogravimetric Analysis (TGA ...
Theodoros Gikarakis   +6 more
doaj   +1 more source

Effect of the zwitterion structure on the thermo-responsive behaviour of poly(sulfobetaine methacrylates)

open access: yes, 2017
A series of new sulfobetaine methacrylates, including nitrogen-containing saturated heterocycles, was synthesised by systematically varying the substituents of the zwitterionic group. Radical polymerisation via the RAFT (reversible addition–fragmentation
Viet Hildebrand   +4 more
semanticscholar   +1 more source

Chain-Length-Dependent Termination in Radical Polymerization of Acrylates [PDF]

open access: yes, 2011
The technique of SP PLP EPR, which is single-pulse pulsed-laser polymerization (SP PLP) in conjunction with electron paramagnetic resonance (EPR) spectroscopy, is used to carry out a detailed investigation of secondary (chain-end) radical termination ...
Barth, J.   +3 more
core   +1 more source

C2α‐carbanion‐protonating glutamate discloses tradeoffs between substrate accommodation and reaction rate in actinobacterial 2‐hydroxyacyl‐CoA lyase

open access: yesFEBS Open Bio, EarlyView.
Enzymes of the 2‐hydroxyacyl‐CoA lyase group catalyze the condensation of formyl‐CoA with aldehydes or ketones. Thus, by structural adaptation of active sites, practically any pharmaceutically and industrially important 2‐hydroxyacid could be biotechnologically synthesized. Combining crystal structure analysis, active site mutations and kinetic assays,
Michael Zahn   +4 more
wiley   +1 more source

Embedding of fibre optic sensors within flexible host [PDF]

open access: yes, 2009
This work deals with the establishment of a UV polymerisation procedure combined with moulding technology towards the development of a mass production technology for the fabrication of flexible polymers with optical fibres embedded.
Dubruel, Peter   +7 more
core  

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