نتایج جستجو برای: edge chipping
تعداد نتایج: 112965 فیلتر نتایج به سال:
Pharmaceutical tablets can be susceptible to damage such as edge chipping or erosion of the core during tablet coating process. The intersection certain process parameters, equipment design, and properties may induce more significant complete fracture. In this work, a hybrid predictive approach was developed using discrete element method (DEM) modeling lab-based impact experiments identify cond...
PURPOSE The aim of the study was to report the long-term clinical performance of esthetic primary molar crowns and compare them to that of stainless steel crowns (SSC). METHODS Twenty crowns (10 conventional and 10 esthetic) placed in 10 children who had participated in a previously reported study, were assessed again after 4 years. The crowns were evaluated clinically and radiographically ac...
This study investigates the optimal supply chain design for commodity chemicals (BTX, etc.) production via woody biomass fast pyrolysis and hydroprocessing pathway. The locations and capacities of distributed preprocessing hubs and integrated biorefinery facilities are optimized with a mixed integer linear programming model. In this integrated supply chain system, decisions on the biomass chipp...
Abstract Nanoparticles such as graphene have been added to various polymer matrices enhance the mechanical, thermal, and electrical properties of materials that require complex designs on a microscopic scale. Micro-machining is used process these nanocomposite achieve high surface quality dimensional accuracy while maintaining productivity. In this study, systematic micro-milling experiment was...
Here we show how a migratory songbird, the chipping sparrow (Spizella passerina), achieves prompt and precise vocal imitation. Juvenile chipping sparrow males develop five to seven potential precursor songs; the normal development of these songs requires intact hearing but not imitation from external models. The potential precursor songs conform with general species-typical song parameters but ...
OBJECTIVE The aim of this multicenter randomized controlled clinical trial was to test posterior zirconia-ceramic fixed dental prostheses (FDPs) veneered with a computer-aided design/computer- assisted manufacture (CAD/CAM) lithium disilicate veneering ceramic (CAD-on) and manually layered zirconia veneering ceramic with respect to survival of the FDPs, and technical and biologic outcomes. ME...
The study determined the time consumption, fuel consumption and chip size obtained with two different industrial chippers, working with logging residues (tops and branches), thinning material and pulpwood. Specific time consumption per oven dry tons (odt) was 83% higher for the less powerful disc chipper, and chipping forest residues resulted in a 35% increase in specific time consumption compa...
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