From the early Copper Age several millennia ago, to the beginning of the Steel Age in the 19th century, our capacity to access and manipulate metals has created the foundation for the modern world. Today, metal structures are ubiquitous— from the tallest skyscrapers to the most elegant of jewelry—that we often forget much of it originated from metal containing ores, comprised of metal compounds...

BACKGROUND Conventional investing and casting techniques are time-consuming and usually requires 2-4 h for completion. Accelerated nonstandard, casting techniques have been reported to achieve similar quality results in significantly less time, namely, in 30-40 min. During casting, it is essential to achieve compensation for the shrinkage of solidifying alloy by investment expansion. The metal ...

Solidification rate of the casting affects greatly on the microstructure, quality as well as the mechanical properties of the casting. In centrifugal castings solidification rate is faster compared to gravity casting but still solidification depends on various process parameters like, die wall temperature, pouring temperature of the molten metal, wall thickness of the die and also rotational sp...

Titanium (Ti) foams with relative densities of 0.32, 0.37, and 0.49 were processed via freeze casting. The mechanical characteristics samples different porosities studied in uniaxial compression tests at initial strain rates between 0.001 0.5 s−1. According to the results, stress–strain response does not significantly depend on rate, least up applied maximum stress, which corresponds 0.1–0.3 en...

In this work, we investigate gaze selection in the context of mid-air hand gestural manipulation of 3D rigid bodies on monoscopic displays. We present the results of a user study with 12 participants in which we compared the performance of Gaze, a Raycasting technique (2D Cursor) and a Virtual Hand technique (3D Cursor) to select objects in two 3D mid-air interaction tasks. Also, we compared se...

This paper introduces a new technique to detect the coronary arteries as well as other heart’s peripheral vessels. After finding the location of the myocardium through a graph theoretic segmentation method, the algorithm models the heart with a biaxial ellipsoid. For each point of this ellipsoid, we compute the collection of intensities that are normal to the surface. This collection is then fi...

this study was conducted to evaluate the effects of freeze-thaw cycles on some quality parameters of silver carp fillets. the prepared fillets were packaged in zip lock bags and were subjected to 0, 1, 2, 3, 4 and 5 freeze-thaw cycles, respectively. heme iron content decreased, and dry matter increased as the number of freeze-thaw cycles increased (p

The ability of now-casting and eventuality is the most crucial and vital achievement of big data analytics in the area of policy-making. To recognize the trends and to render a real image of the current condition and alarming immediate indicators, the significance and the specific positions of big data in policy-making are undeniable. Moreover, the requirement for policy-making institutions to ...

BACKGROUND Although botulinum toxin A is frequently used to augment serial casting in the treatment of soft-tissue contractures in children with cerebral palsy, its effectiveness for this purpose has not been evaluated. The purpose of the present study was to determine whether botulinum toxin A injection increases the efficacy of serial casting. METHODS A prospective, randomized trial was und...