Results 21 to 30 of about 1,961,451 (191)

Hygiene status of food contact surfaces in public school canteens in the city of Novi Sad, Serbia [PDF]

open access: yesVojnosanitetski Pregled, 2022
Background/Aim. Establishing a food safety control system is extremely important in preventing diseases associated with foodborne pathogens. The aim of this study was to examine the hygiene status of food contact surfaces and the application of good ...
Popović Milka   +7 more
doaj   +1 more source

Poly(urethane-siloxane)s based on hyperbranched polyester as crosslinking agent: Synthesis and characterization [PDF]

open access: yesJournal of the Serbian Chemical Society, 2012
A series of novel polyurethane crosslinked structures (PUs) was prepared from α,ω-dihydroxy-(ethylene oxide-poly(dimethylsiloxane)-ethylene oxide) (EO-PDMS-EO), 4,4’-methylenediphenyl diisocyanate and Boltorn® hyperbranched polyester of the third ...
Pergal Marija V.   +5 more
doaj   +1 more source

Optical Properties and Surface Morphology of Zinc Telluride Thin Films Prepared by Stacked Elemental Layer Method

open access: yesMedžiagotyra, 2012
ZnTe thin films were prepared by Stacking of elemental (Zn and Te) layers (SEL) followed by inert gas annealing. The optical parameters were calculated from the transmission spectra.
Subramani SHANMUGAN, Devarajan MUTHARASU
doaj   +1 more source

Physicochemical, structural, and adsorption characteristics of DMSPS-co-DVB nanopolymers

open access: yesFrontiers in Chemistry, 2023
The aim of this work is the synthesis and characterization of the series of S,S′-thiodi-4,1-phenylene bis(thio-methacrylate)-co-divinylbenzene (DMSPS-co-DVB) nanomaterials.
Alicja Bosacka   +6 more
doaj   +1 more source

Assessment Of Usability Of Molten Salt Mixtures In Metallurgy Of Aluminum Alloys And Recycling Of Composite Materials Based On The Matrix Of Al Alloys

open access: yesArchives of Metallurgy and Materials, 2015
Effectiveness of the slags used in metallurgy of aluminum alloys and in recycling of composite materials containing these alloys depends on their surface properties at the phase boundaries they are in contact with.
Jackowski J., Suchora-Kozakiewicz M.
doaj   +1 more source

Precursor type affecting surface properties and catalytic activity of sulfated zirconia [PDF]

open access: yesActa Periodica Technologica, 2007
Zirconium-hydroxide precursor samples are synthesized from Zr-hydroxide, Zr-nitrate, and Zr-alkoxide, by precipitation/impregnation, as well as by a modified sol-gel method. Precursor samples are further sulphated for the intended SO4 2- content of 4 wt.%
Zarubica Aleksandra R.   +1 more
doaj   +1 more source

A numerical approach for fluid deformable surfaces with conserved enclosed volume [PDF]

open access: yes, 2022
We consider surface finite elements and a semi-implicit time stepping scheme to simulate fluid deformable surfaces. Such surfaces are modeled by incompressible surface Navier-Stokes equations with bending forces. Here, we consider closed surfaces and enforce conservation of the enclosed volume.
arxiv   +1 more source

Impact of particle shape on electron transport and lifetime in zinc oxide nanorod-based dye-sensitized solar cells

open access: yesAIMS Materials Science, 2016
Owing to its high electron mobility, zinc oxide represents a promising alternative to titanium dioxide as the working electrode material in dye-sensitized solar cells (DSCs).
Roger Chang   +2 more
doaj   +1 more source

Uniformization of surfaces with boundary and the application to the triple junction surfaces with negative Euler characteristic [PDF]

open access: yesarXiv, 2021
The conformal structure on minimal surfaces plays a key role in studying the properties of minimal surfaces. Here we extend the results of uniformization of surfaces with boundary to get the (weak) uniformization results for triple junction surfaces.
arxiv  

Effects of liquids immersion and drying on the surface properties of HTV silicone rubber: characterisation by contact angle and surface physical morphology

open access: yesHigh Voltage, 2019
High-temperature vulcanised (HTV) silicone rubber composite insulator has been widely used in extra-high and ultra-high transmission lines due to its excellent electrical and mechanical performance.
Yanfeng Gao   +6 more
doaj   +1 more source

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