at the final stages of a coronary artery bypass graft operation on a 64-year-old man, an experienced physician attempted to insert an intra-aortic balloon pump into the femoral artery via the seldinger technique. however, while the balloon pump was being passed over the guide wire, the latter was completely lost. the guide wire should be held at the tip at all times to prevent passage into the ...

the effects of steel wire patenting process parameters on very fine interlamellar spacing in the pearlitic steel wire were investigated and the optimized condition of the process was achieved. in this work, the initial nanopearlitic structure was obtained in a 0.72 wt% carbon steel wire before the wire drawing process. the results were the minimum interlamellar spacing of 35 nm and maximum ulti...

Self-ligating braces offer shorter orthodontic treatment, more comfortable follow-up and less chair time. Passive are preferred in self-ligating systems as they cause friction. Damon system is also one of the most popular passive braces. In addition to protrusion incisors, it important advantages this bracket that provides expansion dental arches. The purpose these case reports present treatmen...

I examine whether education increases patience. Admission decisions in a public college in Mexico are determined through a lottery. I find that applicants who were successful in the draw were more likely to study in the following years. I surveyed the applicants to this college almost two years after the admission decision was made and measured their time preferences with a series of hypothetic...

the micro wire electrical discharge machining (micro wire-edm) process is a modern machining process with various applications in manufacturing micro-parts. the recast layer remaining on the machined surfaces is an inevitable complication of this process. this layer can subsequently affect the machined parts performance. to optimize the recast layer in the micro wire-edm of the molybdenum micro...

Genetics and Molecular Biology Branch, Genetic Diseases Research Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD; Department of Biochemistry, Dartmouth Medical School, Hanover, NH; Division of Veterinary Resources, Office of Research Services, National Institutes of Health, Bethesda, MD. M.K. is a recipient of a Damon-Runyon Cancer Research Fund Fel...

Diane Ruge,1 Li-Min Liou,1,2,3 and Damon Hoad1 1Sobell Department of Motor Neuroscience and Movement Disorders, UCL–Institute of Neurology, University College London, London WC1N3BG, United Kingdom, and 2Department of Neurology, Kaohsiung Municipal Hsiao-Kang Hospital, Kaohsiung 812, Taiwan, and 3Department of Neurology, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan Review of Buc...

The size and length effects of an inclusion on multi-pass copper shaped-wire drawing were investigated. For this purpose, an experimental investigation on optimal die half-angle was conducted. Based on experimental data of optimal die half-angle, wire and inclusion deformations, drawing and hydrostatic stress of copper shaped-wires that contain an inclusion were calculated by two-dimensional fi...