Sea lice infestations have become a major health problem for farmed salmonids throughout the world including Chile. In southern Chile, 6 geographical areas, divided into 22 geographical zones with a total of 127 salmon farming centers and 1519 sea pens, were regularly sampled from December 1999 to April 2002. A linear mixed-effects model (LME) approach was used to describe the infestations of a...

The authors present a simple classroom experiment that can be used as a teaching device to introduce important concepts of organizational economics and incentive contracting. First, students take the role of a principal and design a contract that consists of a fixed payment and an incentive component. Second, students take the role of agents and decide on an effort level. The experiment illustr...

Understanding of joint dysfunction requires some knowledge of normality and the comparison of the diseased state to the physiologic situation (Fig. 173.2). The most important requirements for normal joint function are the freedom of the opposed articular surfaces to move pain free—and largely frictionlessly—over each other within the required range of motion as well as the correct distribution ...

Patients and methods: A prospective, open-label study was conducted in 20 patients undergoing CRRT. Blood and dialysate-ultrafiltrate samples were obtained after administration of 500 mg, 1000 mg or 2000 mg of meropenem every 6 or 8 hours by intravenous infusion. The data were analysed under the population approach using NONMEM version V software. Age, bodyweight, dialysate plus ultrafiltrate f...

Peyronie's disease (PD) is fibrosis localized in the tunica albuginea that is characterized by penile deformity and curvature. The pathogenesis of this disease remains unclear even though transforming growth factor-β (TGF-β)/smad signalling has been reported to be associated with PD. Recent studies have shown that phosphoinositide 3-kinase (PI3K)/Akt signalling regulates fibrotic responses incl...

I. Definition of the ArizonaGroup.155 II. History of the Arizona 6 III. Serologic Differentiation of ArizonaTypes. 158 IV. Occurrence and Distribution of the Arizona Group.162 A. Outbreaks of Infection Involving Multiple Cases..... 170 B. Observations Concerning Certain Serotypes............................................ 171 V. Comment............................................ 173 VI. Ackno...