Ultrasonic welding workload on vertical roller components face-mask body machine in making masks has a highvibration of up to 20kHz. This high vibration causes the locking bolt loosen serrations, thus causing greater failure function, such as wear and tear teeth. If this function fails, it will cause downtime costs waiting process for cleat component be remanufactured. The damage prognosis syst...

Rolling-based seismic isolation systems, in which rollers of circular or non-circular section are used, are less expensive and easier to manufacture. However, this type of isolation suffers from either lack of restoring or re-centering capability, or weakness against uplift forces. To resolve the first shortcoming the use of elliptical as well as pillow-shape rolling parts has been suggested, a...

compared to other methods of vaccine production, (e.g. culture flask and bioreactor system), the roller culture method for producing rabies vaccine is simpler, and the equipment easier to install and maintain, and also in the event of contamination of one roller, the entire batch need not be discarded. this system provides a much larger surface area than the culture flask, and also ensures a mu...

Rollers crimpers have been used in conservation agriculture to terminate cover crops; however, excessive vibration generated by the original straight-bar roller design has delayed adoption of this technology in the United States. To avoid excessive vibration, producers generally reduce operating speeds that increase the time needed to perform the field operation. The objectives of this research...

OBJECTIVE To describe the circumstances, severity, and outcomes of skating-related injuries among children admitted to trauma centers. DESIGN A cross-sectional comparison of roller skaters (n = 154), in-line skaters (n = 190), and skateboarders (n = 254) aged 5 to 19 years who were hospitalized with injuries. SETTING Seventy-nine hospitals and pediatric trauma centers participating in the N...

The purpose of this study was to modify the sago grater roller, determine tool's effective capacity, calculate wet starch yield, and compare it with an unmodified machine. This research used tool modification experimental methods, including stages problem identification, refinement ideas. Based on results grating using Honda GX 160 gasoline motor 5.5 Hp 2200 rpm, average value capacity is 117.6...

Powder bed additive manufacturing (AM) processes, including binder jetting (BJAM) and powder fusion (PBF), can manufacture complex three-dimensional components from a variety of materials. A fundamental understanding the spreading thin layers is essential to develop robust process parameters for AM assess influence feedstock characteristics on subsequent outcomes. Toward meeting these needs, th...

[Purpose] The purpose of this study is to examine the influence of the vibration form-roller exercise on the pain in the hip joint and the joint performances. [Subjects and Methods] 30 adult patients were randomly sampled and divided into form-roller group (15) and the vibration form-roller group (15). The two groups were exposed to an exercise regimen of 3 sessions per week, over 4 weeks. Each...

Objective.-To describe circumstances, severity, and outcomes of skating-related injuries among children admitted to trauma centers. Design.-Cross-sectional comparison of roller skaters (N = 154), inline skaters (N = 190), and skateboarders (N = 254) age 5 to 19 who were hospitalized for their injuries. Setting.-79 hospitals and pediatric trauma centers participating in the National Pediatric Tr...

A prototype of a non-occlusive pressure-regulated blood pump (M-pump) was evaluated in-vitro for safety in a comparative study with the roller and centrifugal pumps. The M-pump consists of collapsible tubing of unique design wrapped under tension around a rotor without a stator. The prototype M-pumps were tested in vitro to evaluate performance with respect to flow/ pressure characteristics, he...