This study investigated the temporal behavior of grand piano actions from different manufacturers under different touch conditions and dynamic levels. An experimental setup consisting of accelerometers and a calibrated microphone was used to capture key and hammer movements, as well as the sound signal. Five selected keys were played by pianists with two types of touch ("pressed touch" versus "...

53 year old female patient with left food critical limb ischaemia underwent CT-angiography investigation. The CT angio­graphy confirmed sub-occlusion of the abdominal aortia. lesion was treated from femoral and radial artery access two balloon-expandable Bentley BeGraft successfully, without complication. wound has been healed after procedure remained asymptomatic.

A graph G = (V, E) is called a split graph if there exists a partition V = I ∪K such that the subgraphs G[I ] and G[K] of G induced by I and K are empty and complete graphs, respectively. In 1980, Burkard and Hammer gave a necessary condition for a split graph G with |I | < |K| to be hamiltonian. We will call a split graph G with |I | < |K| satisfying this condition a Burkard-Hammer graph. Furt...

Hammer-throw has a long-standing history in track and field, but unlike some other sports events, men's hammer throw has not seen a new world record since 1986. One of the possible reasons for this stagnation could be the lack of real-time biomechanical feedback training. In this study, we proposed to establish scientifically described training targets and routes, which in turn required tools t...

Vibratory installation of piles and casings can be extremely economical and therefore the contractors’ preferred method of pile driving. Compared to impact pile driving it also has the advantage of reduced noise pollution. Unfortunately, this installation method is still fraught with uncertainties. The foremost question is driveability and equally important is the question of bearing capacity o...

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...