Results 81 to 90 of about 42,763 (313)
Depolymerization of PMMA-Based Dental Resin Scraps on Different Production Scales
EnergiesThis research explores the depolymerization of waste polymethyl methacrylate (PMMAW) from dental material in fixed bed semi-batch reactors, focusing on three production scales: laboratory, technical and pilot.
Haroldo Jorge da Silva Ribeiro +12 more
doaj +1 more source
Orbital: The Electronic Journal of Chemistry, 2016 The objective of this study was to qualitatively analyze the polymerization of a nanoparticle resin; the method used combined a fluorescence spectroscopy technique with the use of Rhodamine dye. For comparative purposes, differential scanning calorimetry
Aline B. Denis +4 more
doaj +1 more source
Investigation of the Oven Process in Indirect Metal Laser Sintering [PDF]
, 2004 This paper deals with the optimization of Indirect Metal Laser Sintering. Different experimental analyses have proven that the oven process is highly responsible for the part distortion.
Seefried, M., Zaeh, M. F.
core +1 more source
Emergent Spin‐Glass Behavior in an Iron(II)‐Based Metal–Organic Framework Glass
Advanced Functional Materials, EarlyView.A one‐pot, solvent‐free synthesis yields an Fe2+‐based metal‐organic framework (MOF) glass featuring a continuous random network structure. The material exhibits spin‐glass freezing at 14 K, driven by topological‐disorder and short‐range magnetic frustration, showcasing the potential of MOF glasses as a plattform for cooperative magnetic phenomena in ...
Chinmoy Das +8 more
wiley +1 more source
Biodegradation of polycyclic aromatic hydrocarbons in soil contaminated with coal tar [PDF]
Acta Montanistica Slovaca, 2006 Polycyclic aromatic hydrocarbons (PAHs) are a group of serious contaminants of air, water soil and sediments. Persistence and accumulation of PAHs in the environment is due to their hydrophobicity and hence low solubility and bioavailability to microbial
Ondrej Tischler +3 more
doaj
Chemoselective Sequential Polymerization: An Approach Toward Mixed Plastic Waste Recycling
Advanced Functional Materials, EarlyView.Inspired by biological protein metabolism, this study demonstrates the closed‐loop recycling of mixed synthetic polymers via ring‐closing depolymerization followed by a chemoselective sequential polymerizations process. The approach recovers pure polymers from mixed feedstocks, even in multilayer formats, highlighting a promising strategy to overcome a
Gadi Slor +5 more
wiley +1 more source
Applied SciencesDark chocolate is a confectionery product traditionally made from cocoa beans, sugar, and vanilla essence. The aim of the study was to investigate the thermal properties of dark chocolates and fats extracted from these chocolates using thermal methods of
Ewa Ostrowska-Ligęza +6 more
doaj +1 more source
Synthesis of an active substance for microcapsules in a polymer composite with a self-healing effect [PDF]
Нанотехнологии в строительствеIntroduction. The aim of this study is to examine the properties of a synthesized epoxy resin hardener based on dicyclopentadiene and maleic anhydride. Materials and methods. The following chemical reagents were used for synthesis: dicyclopentadiene 98%
Natalia I. Cherkashina +4 more
doaj +1 more source
Some peculiarities of burnt birch wood pyrolysis [PDF]
, 2019 The results of thermal analysis of sound and burnt birch wood samples were compared. An attempt was made to establish a connection between the type of the TG, DTG and DSC curves and the mechanism of wood pyrolysis. The dependence of the exothermic effect
Khalimov, E., Shteba, T., Yuryev, Yu. L.
core
Absence of static phase separation in the high-Tc cuprate $YBa_{2}Cu_{3}O_{6+y}$
, 2002 We use 89Y NMR in $YBa_{2}Cu_{3}O_{6+y}$ in order to evaluate with high sensitivity the distribution of hole content p in the CuO2 planes. For y=1 and y=0.6, this hole doping distribution is found narrow with a full width at half maximum smaller than ...
A. Mahajan +14 more
core +1 more source