The source is covered by a watertight steel cylinder which is fixed inside a 0.65 m long piece of ASEA-ATOM type BWR fuel channel. Inside the cylinder there is a 37 GBq Cs-137 pellet fixed to a wagon which can be driven up and down by means of a stepping motor. By moving the source, the repeatability of the geometrical positioning is attained. The amplitude and scanning speed are controlled by ...

PURPOSE This study evaluated the deformation of a metallic framework connected to 15 stone casts fabricated using 3 transfer techniques to determine the most accurate impression procedure. MATERIALS AND METHODS Five stone casts were made from polyether impressions of an epoxy resin master model for each transfer technique. Group 1 samples were created by the direct splinted technique (square ...

Pediatric dentists should always aim for esthetic and functional rehabilitation of decayed/traumatized primary teeth. The most common method for restoring such teeth involves the use of "strip crowns" with composites, while the recent trend is toward using other extracoronal restorations including preve-neered stainless steel crowns and zirconia crowns. All these restorative options have shown ...

hepatitis b (hb) disease occurs with high risk behaviors in the different communities. aim of this study was to find out some of local customs in lifestyle that might be risk factors for transmitting this disease in order to design the educational programs and control it periodically in chaharmahal va bakhtiari, iran. this was a case-control study, carried out on patients with hb and the contro...

Wrought and additively manufactured (AM) 316 L stainless steel samples were exposed to a simulated Brayton cycle supercritical CO2 (sCO2) environment, at temperature of 450 °C pressure 76 bar in 99.999% for 2 weeks. The ground surfaces wrought AM specimens had average oxide thickness 95 51 µm, respectively, composed primarily Fe Cr oxides. An as-printed sample was also the sCO2 environment exhi...

The brushing simulator assists researchers and dentists in conducting investigations on human teeth plaque removal. In this paper, the development of a is studied. Which focuses life expectancy shaft material used process future. aim study to analyse stress distribution aluminium simulator’s stainless steel threaded shafts. Besides, expectancy. motor speed Set 1 can be modified 450 rpm, 480 510...

Biomass feedstocks have been utilized for the commercial production of a wide range fuels and chemicals through pyrolysis process. Broom weed is abundant but it has not widely used in Nigeria as means useful fuel chemical thereby constituting an environmental menace. This study aimed to determine effects selected process parameters on product yields during broom fixed bed reactor. was obtained ...