The aim of this study is to experimentally investigate the mechanical characteristics concrete combining silica fume (SF) and magnetized water (MW). A total nine mixes were prepared tested for workability, compressive strength, splitting tensile flexural strength. Ordinary tap (TW) MW that was with five proposed different methods utilized in mixes. by passing TW through a permanent magnetic fie...

Hammering with a hand tool appears early in life. Skillful hammering involves accommodating movements to properties of the hammer, orienting the hammer's head to the item to be struck, and maintaining stable posture during forceful action with the arm(s). We aimed to characterize development of these abilities in young children (12, 18, and 24 months old). Children struck at a peg with a hammer...

To cite: Gupta A, Gupta S, Harris S, et al. BMJ Case Rep Published online: [please include Day Month Year] doi:10.1136/bcr-2015213678 DESCRIPTION A 32-year-old man, a mason, presented with right hand pain of 2-week duration, but reported no acute injury. Ulcerative changes and blanching at the tips of right fourth/fifth digits were observed. Significant tenderness to palpation over the right di...

This work defines the previously undetermined contribution of ‘zero wear’ volume, that is geometry change due to material compression occurs before other mechanisms cause through actual loss are initiated during repetitive impact. Five metal alloys widely used in engineering applications, each with a different bulk hardness, were subjects experiments. Using reciprocating hammer type impact wear...

The uniaxial compressive strength (UCS) of rock is an essential property material in different relevant applications, such as slope, tunnel construction, and foundation. It takes enormous time effort to obtain the UCS values directly laboratory. Accordingly, indirect determination through conducting several index tests that are easy fast carry out interest importance. This study presents powerf...

Purpose. The research purpose is to study the effectiveness of artificial maintenance mined-out space based on use cable bolts reduce dilution coefficient when mining low-thickness ore bodies. Methods. Geotechnical mapping rock mass according Q, RMR, RQD and GSI rating classifications conducted, as well a linear survey fracture system in hanging wall footwall rocks performed using compass GEO I...

in this paper, we considered composition operators on weighted hilbert spaces of analytic functions and  observed that a formula for the  essential norm, gives a hilbert-schmidt characterization and characterizes the membership in schatten-class for these operators. also, closed range composition operators  are investigated.

The relationship between final hammer velocity and maximum amplitude of radiated piano sound was investigated. Piano tones with varying hammer velocities were produced by a computer-monitored acoustic piano containing optical sensors and solenoids, and the sounded tones were recorded and digitized for analysis. Maximum amplitudes over the duration of the sounded tones were linearly proportional...

equipment driven by the printer. When the two codes compare, the hammer is en~r­ gized. The important thing is to get the print hammer thyratron fired at the right time. As long as the sum total of all the operations you do beforehand achieves that, you get the right character. Lt. R. S. Weinberg (Air Materiel Command, United States Air Force): Can you relate something of the service experience...

Bleaching patterns along a faulted succession provides new insight into fluid migration pathways controlled by the fault zone and mechanical stratigraphy. In order to investigate this effect, we logged stratigraphic layers in Humbug Flats, Utah, USA both host rocks rocks, where 40 m offset normal cuts through Entrada Sandstone. We measured petrophysical properties using TinyPerm II, Schmidt Ham...