objective: this study aimed to compare the effect of using casein phosphopeptide – amorphous calcium phosphate (cpp-acp) paste, remin-pro and fluoride varnish on remineralization of enamel lesions. methods: in this experimental-in vitro study, 60 intact premolars and molars were used and flat enamel surfaces were prepared. the specimens were divided into 6 groups (n=10). after primary diagnoden...

objective(s): yu-ping-feng-san (ypfs) is a classical traditional chinese medicine that is widely used for treatment of the diseases in respiratory systems, including chronic obstructive pulmonary disease (copd) recognized as chronic inflammatory disease. however, the molecular mechanism remains unclear. here we detected the factors involved in transforming growth factor beta 1 (tgf-β1)/smad2 si...

Vehicle coating is an important component of automotive manufacturing. The paint shop constitutes the plurality of initial investment in an automotive assembly plant, consumes the majority of energy used in the plant's operation, and generates significant waste from paint overspray. The coating process also results in the emission of polluting volatile organic compounds (VOCs). New paint techno...

Biogas is produced when organic matter is degraded in the absence of oxygen. The process, from degradation to gas production is called anaerobic digestion. The research in this study focuses on the feasibility of the design and implementation of an operational digester, the monitoring and control of the different biodegradation process variables and experiments to boost or maximize the gas prod...

Vehicle coating is an important component of automotive manufacturing. The paint shop constitutes the plurality of initial investment in an automotive assembly plant, consumes the majority of energy used in the plant’s operation, and generates significant waste from paint overspray. The coating process also results in the emission of polluting volatile organic compounds (VOCs). New paint techno...

Praised for its revolutionary technique and studied for its perplexing imagery, Jan van Eyck’s Arnolfini Portrait has remained a riddle since the 19th century. Completed in 1434 in Bruges, the work showcases a skilled use of oil paints and impressively realistic details. More famous and perhaps more important, however, than van Eyck’s technique are the two figures and the objects which decorate...

Organic solids such as polymethylrnr, polyrthylznr. polyoxymethylenr. aliphrrtic and cyclic paraffins, naphthalcnc, anthraccnc and krrogen wt’rc irr~l~li~il~~j at 77 K with IO-20 Me\’ cyclotron ions tp. ‘Hc) aul up to 10 CS photons. The pro&c!s were analyseci by qu;~drupole mass spectromctry (OMS). Fourier tnmsform infrared spectroscopy (m-1 R). Raman <pectroscopy ;tnd gas chromatography (CX‘)....