Oxygen reduction at the silver/hydroxide-exchange membrane interface

A solid-state cell is used to study the electrocatalysis of oxygen reduction at the silver/hydroxide-exchange membrane interface. The catalyst/membrane interface exhibits improved performance in comparison to a catalyst/aqueous sodium hydroxide interface. Surprisingly, the half-wave potential for oxygen reduction is shown to shift 185 mV higher at the silver/hydroxide-exchange membrane interface than for the silver/aqueous hydroxide solution interface, and the exchange current density is significantly higher at 1.02 × 10−6 A m−2. On a cost per performance basis, silver electrocatalysts in a hydroxide-exchange membrane fuel cell may provide better performance than platinum in a proton-exchange membrane fuel cell. Keywords: Oxygen reduction reaction, Electrocatalyst, Alkaline membrane, Solid-state cell, Silve

Circadian regulation of reproduction: From gamete to offspring

P01326625; Grants: GNT0519315Few challenges are more critical to the survival of a species than reproduction. To ensure reproductive success, myriad aspects of physiology and behaviour need to be tightly orchestrated within the animal, as well as timed appropriately with the external environment. This is accomplished through an endogenous circadian timing system generated at the cellular level through a series of interlocked transcription/translation feedback loops, leading to the overt expression of circadian rhythms. These expression patterns are found throughout the body, and are intimately interwoven with both the timing and function of the reproductive process. In this review we highlight the many aspects of reproductive physiology in which circadian rhythms are known to play a role, including regulation of the estrus cycle, the LH surge and ovulation, the production and maturation of sperm and the timing of insemination and fertilisation. We will also describe roles for circadian rhythms in support of the preimplantation embryo in the oviduct, implantation/placentation, as well as the control of parturition and early postnatal life. There are several key differences in physiology between humans and the model systems used for the study of circadian disruption, and these challenges to interpretation will be discussed as part of this review.M.J. Boden, T.J. Varcoe, D.J. Kennawa

The skin project

Welcome to this very special issue of FFM (Future Fashion Magazine). This month we've sent our savvy team of fashionistas on a mission to unfold everything you need to know about the hottest, newest, latest trend to take the fashion would by storm. It’s called The Skin Project and it’s about to turn the fash pack into a frenzy. In this special issue you'll meet the lady herself, Ms L.E Varlo. She's responsible for the Skin Folding technique that The Skin Project is famous for. She says "Skin Folding is a technique that involves temporarily modifying your skin to make a garment for yourself." Wild huh. L.E says she's interested in what it is that makes us feel dressed and what clothing could be. Fashion critics are skeptical and others are finding it hard to imagine feeling dressed in their own skin. But Adele Varcoe FFM editor says that “ fashion is changing what we believe clothing to be and The Skin Project is a great example of this. The fact that people are feeling dressed in their own skin demonstrates that fashion can make us feel dressed in almost anything. Today I’m wearing my skin folded similar to Angelina at the Oscars. Wearing my skin folded transforms me into the me I’d rather be.” So, whether you're searching for something to wear or making folds in your own skin, it seems The Skin Project is going to get us thinking about what the future holds for fashion

The Creation and Detection of Arbitrary Photon Number States Using Cavity QED

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