This study concerns the use of fused filament fabrication technique to create models landing gear an unmanned aircraft. These components are made with short fibers (chopped fibers) carbon fiber and fiberglass. In order identify material high mechanical strength, designed were subjected a finite element analysis three-point bending test, followed by microscopic examination tested components. Fol...

Lignin is a valuable biomaterial. It is both naturally abundant and readily available as a byproduct of the pulping processes, and the proper reprocessing of lignin is an effective way to achieve waste recovery. Lignin fiber mats with web structures can be produced using electrospinning techniques. Such fiber mats are a promising material for use in the production of filter products. This study...

Apple pomace is a rich source of dietary fiber that can be easily incorporated in bakery products to enhance the nutritional quality product. In present study, apple powder was utilized for formulating fiber-enriched muffin pre-mix. (APP) supplemented refined wheat flour at different concentration and 33% found highly acceptable by sensory panelists on 9 point hedonic scale. Samples were analyz...

A number of treatment options, ranging from Maryland bridges to implants, are available for the replacement of congenitally or traumatically missing permanent anterior teeth. But, there are several limitations of these therapeutic options when they have to be used before the completion of the growth, particularly in children. Reinforcement of composite resins with polyethylene fibers significan...

The aim of this study was to develop electrospun chitosan/polyethylene oxide-based randomly oriented fiber mats reinforced with chitin nanocrystals (ChNC) for wound dressing. Microscopy studies showed porous mats of smooth and beadless fibers with diameters between 223 and 966 nm. The addition of chitin nanocrystals as well as crosslinking had a positive impact on the mechanical properties of t...

OBJECTIVE The reattachment of the crown fragment to a fractured tooth is a conservative treatment that should be considered for young patients with crown-root fractures to the maxillary incisors if the subgingival fracture can be exposed to provide isolation. Gingivectomy, the surgical or orthodontic extrusion of the apical fragment is necessary to expose the subgingival fracture. This report d...

In the present research, occurrence of contamination by microplastics in water column was investigated 15 sample sites along rivers Guapimirim, Macacu and Maracanã—important that flow into Guanabara Bay, a very polluted estuarine environment Brazil. The correctidentified polymers were manually counted classified as to their morphology color using binocular stereomicroscope characterized ATR-FTI...

PURPOSE The aim of this in-vitro investigation was to describe the effect of reinforcement with different fibers on impact strength of heat polymerized polymethyl methacrylate (PMMA) denture base resin and to analyze the effect of surface treatment of the fibers on the impact strength. MATERIALS AND METHODS The specimens were fabricated from the dies formed as per standard ASTM D4812. 2% by w...

The pursuit for lightweight personal protection (helmets, body armor, etc.) has been a key issue for the Army in recent years. Previous efforts have shown that the variation of orientation and architecture in ultra-high molecular weight polyethylene (UHMWPE) composite panels can significantly affect ballistic performance characteristics. In our experiments, an architecture now referred to as “A...