In order to improve the ablation resistance of C/C composites, an AlSiB alloy (mass ratio Al/Si/B = 2:4:1) was used as a dissipative agent fill pores composites matrix by reactive melt infiltration prepare AlSiB-C/C composites. The microstructure evolution and behavior obtained under oxy-acetylene flame were investigated SEM after ablating for 25 s, 50 100 s 150 s. At beginning process, thermal...

OBJECTIVE To test the hypothesis that the quality of the dentinal sealing provided by two-step etch-and-rinse adhesives cannot be altered by the addition of an extra layer of the respective adhesive or the application of a more hydrophobic, non-solvated resin. MATERIAL AND METHODS full-crown preparations were acid-etched with phosphoric acid for 15 s and bonded with Adper Single Bond (3M ESPE...

Osteoclasts resorb bone through the formation of a unique attachment structure called the sealing zone. In this study, a role for thyroid hormone receptor-interacting protein 6 (TRIP6) in sealing zone formation and osteoclast activity was examined. TRIP6 was shown to reside in the sealing zone through its association with tropomyosin 4, an actin-binding protein that regulates sealing dimensions...

The emergence of Mineral Trioxide Aggregate (MTA) as endodontic repair filling material has generated a lot of interest due to its superior sealing ability and biocompatibility. Although MTA possesses superior sealing ability to traditional endodontic repair filling materials, such as calcium hydroxide, but it has poor handling characteristics. A novel endodontic repair filling materials with s...

The current study was designed to isolate and characterize urease-producing bacteria assess their ability precipitate calcium carbonate. Total eight were isolated from dung-rich soil samples collected Dakor, Gujarat. Out of these, two bacterial strains designated as DGDK-3 DGDK-4 found produce a considerable level urease in the initial screening on urea agar medium. Based morphological physiolo...

Analysis of laser assisted frit sealing processes for high CTE > 5x10/°C (coefficient of thermal expansion) glasses was done. The method is based on the thermal fusion of two glasses with a low melting point glass frit. This method is used when thermal sensitive materials such as OLED (organic light emissive device) are present in the glass package. The frit is selected to be highly absorbent a...

The aim of this study was to compare the genotypic diversity and virulence traits of Streptococcus mutans isolated from carious dentin before and after partial dentin caries removal (PDR) and sealing. Carious dentin samples were obtained three months before and after the PDR and cavity sealing. Up to seven isolates of each morphological type of S. mutans were selected and strain identity was co...

When a marine stern shaft is bent with shafting misalignment and stern bearing wear factors, etc., the sealing properties of a plane mechanical seal is declined with the increase of both contact pressure and temperature of sealing surface, so a spherical mechanical seal which can automatically adjust the contact state of sealing surfaces is proposed to replace the plane mechanical seal in order...