This paper presents the results of lab-simulated tests on longwall powered supports under dynamic loading conditions. The were carried out a test site, where tested prop was subjected to load using controlled mass falling gravity onto support. support therefore determined based weight used and distance freefall before impact. operating characteristics valve determined, specifying temporary chan...

Currently, conventional motorcycles that utilize hazardous fossil fuels are expanding rapidly in Indonesia's major cities. Especially campus environments, the increase motorcycle usage has potential to raise emissions of greenhouse gases and toxic microparticles. The green concept entails living must implement low-emission energy efficiency, conserve resources, enhance environmental quality by ...

Foot drop is the inability to dorsiflex ankle (raise toes) due neuromuscular impairment, and this common condition can cause trips falls. Current treatments for chronic foot provide dorsiflexion support, but they either impede push off or are not suitable all patients. Powered ankle-foot orthosis (AFO) counteract without these drawbacks, heavy bulky have short battery life. To drawbacks of curr...

We develop an approach to utilize anisotropic metamaterials to solve one of the fundamental problems of modern plasmonics--parasitic scattering of surface waves into free-space modes, opening the road to truly two-dimensional plasmonic optics. We illustrate the developed formalism on the examples of plasmonic refractor and plasmonic crystal, and discuss limitations of the developed technique an...

Nowadays, engineering is working side by side with medical sciences to design and create devices which could help to improve medical processes. Physiotherapy is one of the areas of medicine in which engineering is working. There, several devices aimed to enhance and assist therapies are being studied and developed. Mechanics and electronics engineering together with physiotherapy are developing...

The dayside cusp/cleft region is known as a major source of upflowing ionospheric ions to the magnetosphere. Since the ions are supposed to be energized by an input of energy from the dayside magnetospheric boundary region, we examined the possible influence of the interplanetary conditions on dayside ion beams and conics observed by the polarorbiting Exos-D (Akebono) satellite. We found that b...

* Corresponding author, Phone: (716) 645-1430, Fax: (716) 645-3668. ABSTRACT Exoskeletons are a new class of articulated mechanical systems whose performance is realized while in intimate contact with the human user. The overall performance depends on many factors including selection of architecture, device, parameters and the nature of the coupling to the human, offering numerous challenges to...

OBJECTIVE To determine whether multiple examiners can demonstrate consistent plaque removal advantages for an oscillating-rotating power toothbrush versus a manual toothbrush. METHODS This was a replicate-use, single brushing, examiner-blind, randomized, two-treatment, four-period crossover clinical trial involving four examiners. Subjects were randomized to one of four treatment sequences in...