Primary hip arthroplasty is a surgical procedure through which the coxofemoral joint is replaced with a prosthetic implant. Arthroplasties can be total or partial, cemented or uncemented. These procedures are generally indicated as a form of treatment for arthritic pain or in the case of severe trauma, such as femoral neck fractures. The most commonly used approaches are: Smith Peterson, Watson...

Maintaining and preserving fungal cultures are essential elements of systematics and biodiversity studies. Because fungi are such a diverse group, several methods of cultivation and preservation are required to ensure the viability and morphological, physiological, and genetic integrity of the cultures over time. The cost and convenience of each method, however, also must be considered. We enco...

OBJECTIVE To compare preservation with the division of the splenic vessels in the surgical management of laparoscopic spleen-preserving distal pancreatectomy. DESIGN Bicentric retrospective study. SETTING Prospectively maintained databases. PATIENTS Between January 1997 and January 2011, 140 patients who underwent laparoscopic spleen-preserving distal pancreatectomy for benign or lowgrade...

This paper proposes a new medium access protocol (MAC) protocol for future wireless multimedia personal communication systems, denoted hybrid and adaptive multiple access control (HAMAC) protocol. The HAMAC protocol integrates fixed assignment TDMA protocol, reservation-based protocols, and contention-based protocols into a single wireless network so as to simultaneously and efficiently support...

In percutaneous collagen induction, an alternative to laser resurfacing, the skin receives multiple punctures with a drum-shaped device that has fine protruding needles, to encourage the production of collagen and elastin. According to the author, advantages include preservation of the epidermis, thicker skin, a short healing phase, and use of local anesthetic alone. (Aesthetic Surg J 2002;22:3...

An exact solution of a system of coupled di erential equations describing the dynamics of a special class of winner-take-all networks is given. From the solution two properties of the short-termmemory traces are derived: (1) information preservation and (2) a discrimination measure. These properties justify a biologically inspired fault tolerant extension of the network using di erentiating neu...

Pulsed electric field (PEF) processing is a emerging method of food preservation that uses short bursts of electricity for microbial inactivation (cell-lysis) and causes minimal or no detrimental effect on food quality attributes. PEF can be used for processing liquid and semiliquid food products.