BACKGROUND The potential requirement for hardware removal originally fueled the development of bioabsorbable pins as an alternative to metal screws for fixing osteotomy sites in foot surgery. More recently, the concern regarding the adverse effects of metal implants may provide further grounds for using bioabsorbable rather than metal fixation. METHODS This is a prospective study of 383 conse...

plate heat exchangers are widely used in industries due to their special characteristics, such as high thermal efficiency, small size, light weight, easy installation, maintenance, and cleaning. the purpose of this study is to consider the effect of depth, angle, and pitch of hemispheric chevrons on the convective heat transfer coefficient and pressure drop. in the simulation of the heat exchan...

We performed basal chevron metatarsal osteotomy on 32 feet (31 patients) for painful hallux valgus associated with an increased intermetatarsal 1/2 angle (> 12 degrees). Pedobarographic and radiological examinations were done preoperatively and at a minimum of six months postoperatively. The average hallux valgus angle was improved from 40.9 degrees to 19.2 degrees and the intermetatarsal 1/2 a...

Shaoyi Jiang,† Rawls Frazier,‡ Elaine S. Yamaguchi,§ Mario Blanco,† Siddharth Dasgupta,† Yanhua Zhou,† Tahir Cagin,† Yongchun Tang,| and William A. Goddard, III*,† Materials and Process Simulation Center, Beckman Institute (139-74), DiVision of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, CheVron Research and Technology Company, 100 CheVron...