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Alternative photoinitiator system reduces the rate of stress development without compromising the final properties of the dental composite
(Elsevier Sci LtdOxfordInglaterra, 2009)
Study of metallocene supported on porous and nonporous silica for the polymerization of ethylene
(BALTZER SCI PUBL BV, 1997)
Porous and nonporous silicas are good supports for the synthesis of coordinative heterogeneous catalysts for ethylene polymerization. The catalytic activity of nonporous Aerosil depends critically on the percentage of ...
DNA Psi-condensation and reentrant decondensation: Effect of the PEG degree of polymerization
(Amer Chemical Soc, 2005-12-15)
psi-Condensation of DNA fragments of about 4 kbp was induced by poly(ethylene glycol) (PEG), with degrees of polymerization ranging from 45 to 182, and univalent salt (NaCl). Using circular dichroism spectroscopy, we were ...
DNA Psi-condensation and reentrant decondensation: Effect of the PEG degree of polymerization
(Amer Chemical Soc, 2005-12-15)
psi-Condensation of DNA fragments of about 4 kbp was induced by poly(ethylene glycol) (PEG), with degrees of polymerization ranging from 45 to 182, and univalent salt (NaCl). Using circular dichroism spectroscopy, we were ...
Factors Affecting Photopolymerization Stress in Dental Composites
(INT AMER ASSOC DENTAL RESEARCHI A D R/A A D R, 2008)
Polymerization stress development results from the complex interplay of volumetric shrinkage, reaction kinetics, and viscoelastic properties. The objective of this study was to examine the relationships among volumetric ...
Influence of irradiant energy on degree of conversion, polymerization rate and shrinkage stress in an experimental resin composite system
(ELSEVIER SCI LTD, 2008)
Objective. This study evaluated the degree of conversion (DC), maximum rate of cure (R(p)(max)), and polymerization stress (PS) developed by an experimental dental composite subjected to different irradiant energies (3,6,12, ...
Influence of pretreatment severity on structural changes, lignin content and enzymatic hydrolysis of sugarcane bagasse samples
(2017-01-01)
The structural changes, lignin content and enzymatic hydrolysis of dilute acid pretreated bagasse from 19 varieties of sugarcane were investigated. Chemical compositions varied significantly between the materials. Glucose ...
REDUCED TITANIUM-DIOXIDE AS SUPPORT FOR ZIEGLER-NATTA CATALYSTS
(John Wiley & Sons IncNew York, 1994)
Photopolymerized hybrids containing TiO2 nanoparticles for gradient-index lens
(2019-10-01)
An ultra violet (UV)-cured nanocomposite material, based on TiO2 nanoparticles was prepared by sol-gel process from 3-(methacryloxy)propyltrimethoxysilane (MPTS) and 1,12-dodecanediol dimethacrylate (DDDMA). The evolution ...