statement of problem: the achievement of a good and durable dentin/composite resin bond is an important task in restorative dentistry. the application of acid conditioners and dentin bonding agents is an accepted method to enhance this bond strength. pretreating of dentin surface by laser irradiation seems to be a supplemental way to obtain better results, since lased dentin is more roughened a...

background: polymerization of resin‑modified glass‑ionomers (rmgis) is mediated through two competing mechanisms: an acid‑base reaction and a light‑dependent resin polymerization. furthermore, pre‑conditioning with acid has resulted in an increase in enamel bond strength of some rmgis. this in vitro study evaluated the effect of pre‑conditioning and/or delayed irradiation on bond strength of th...

The effect of hygrothermal conditions (air temperature and relative humidity) on the dehydration of theophylline monohydrate was investigated. Firstly, the equilibrium states of theophylline were investigated. The data from gravimetric analysis at constant temperature and humidity were reported as desorption isotherms. The PXRD analysis was used to identify the different polymorphic forms of th...

The majority of contemporary insulation materials commonly used in the building industry is made from non-renewable raw materials; furthermore, their production often brings high energy costs. A long-term trend as far as sustainable development is concerned has been the reduction of energy and material demands of building material production. One of the solutions is the possibility of using eas...

In the present study, abrasive wear tests were conducted to investigate effect of hygrothermal ageing on friction and resistance glass/Polytetrafluoroethylene (PTFE) composites. Non-hybrid hybrid composites manufactured with PTFE coated two-dimensional plain weave (2D), three-dimensional knitted (3D), satin (SW) fabrics a steel metal mesh (MM). Hybrid glass MM by placing it top bottom laminate....

• Hygrothermal material properties of bio-based insulators were determined. Bio-based materials provide high thermal resistance and water vapour permeability. Properties insulations are comparable with conventional materials. performance buildings is one key element to the sustainable design, health, comfort indoor environment. Building sustainability depends on all associated lifespan stages, ...