The influence of pH on the corrosion rate of high-purity Mg, AZ91 and ZE41 in bicarbonate buffered Hanks' solution, Corrosion Science http://dx.

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This work investigates the influence of Ag (1 wt%) on the mechanical properties, in vitro and in vivo corrosion, and biocompatibility of Fe‐35Mn. The microstructure of Fe‐35Mn‐1Ag possesses a uniform dispersion of discrete silver particles. Slight improvements in compressive properties are attributed to enhanced density and low porosity volume. Fe‐35Mn‐1Ag exhibits good in vitro and in vivo corrosion rate of Fe‐35Mn due to an increase in microgalvanic corrosion. Gas pockets, which originate from an inflammatory response to the implants, are observed in the rats after 4 weeks implantation but are undetectable after 12 weeks. No chronic toxicity is observed with the Fe‐35Mn‐1Ag, suggesting acceptable in vivo biocompatibility. The high corrosion rate of the alloy triggers an increased level of nonadverse tissue inflammatory responses 4 weeks after implantation, which subsequently subsides at 12 weeks. The Fe‐35Mn‐1Ag displays properties that are suitable for orthopedic applications.

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Zinc is identified as a promising biodegradable metal along with magnesium and iron. In the last five years, considerable progress has been made on understanding the mechanical properties, biodegradability, and biocompatibility of zinc and its alloys. A majority of these studies focused on using zinc for absorbable cardiovascular and orthopedic device applications. However, it is likely that zinc is also suitable for other biomedical applications.In this work, the prospects for zinc in the fabrication of wound closure devices such as absorbable sutures, staples, and surgical tacks are critically assessed, with the aim of inspiring future research on biodegradable Zn for this medical application.

Liquid handling in the laboratory has unique challenges specific to the types of research being performed. The devices employed for purposes of performing liquid handling can be broken down into three general categories: bulk reagent dispensers, transfer devices, and plate washers. An overview of these types of liquid handlers, as well as common features and relevance to high‐throughput applications, are discussed in this article. Important topics such as sterility, ease of use, cost, and instrument design advantages and disadvantages are also covered. Curr. Protoc. Chem Biol. 1:43‐54. © 2009 by John Wiley & Sons, Inc.

Surgeons underestimate the incidence of PSH, but high-quality literature suggests that it may be nearly 40%.