Passivity and electrocatalysis of nanostructured nickel encapsulated in carbon.

Metallic nickel is a powerful electrocatalyst in alkaline solution and is able to be used in the alkaline fuel cell. However, in acidic solution, electrocatalysis is impossible because the metal is subject to rapid corrosion at low pH for all potentials at which an acidic fuel cell would operate. Here we report the synthesis and passive nature of a nickel-carbon nanostructured material which shows electrocatalytic activity.

Delayed therapeutic hypothermia following cardiac arrest secondary to chloroquine toxicity.

We describe a case of severe chloroquine intoxication resulting in a cardiac arrest requiring prolonged cardiopulmonary resuscitation. An excellent neurological outcome was achieved because the cardiac arrest occurred in a young patient lacking comorbidities in an environment where advanced life support was provided rapidly and effectively. Therapeutic hypothermia was instigated once profound shock and arrhythmias had resolved, and this may have contributed to her recovery.

Estimating the number of viable animal cells in multi-well cultures based on their lactate dehydrogenase activities.

A method is described for estimating the numbers ofanimal cells in multi-well culture by simultaneouslymeasuring the lactate dehydrogenase activity of thetotal culture and the medium. The difference betweenthe two reflects the dehydrogenase content of thecells and correlates with cell number. This LDH/INTmethod was tested using several lines of normal andtransformed suspension and adherent cells.

I-gel insertion by novices in manikins and patients.

The i-gel, a novel supraglottic airway, has been proposed for use during cardiopulmonary resuscitation. We evaluated the performance of this device in manikins and anaesthetised patients when used by novices: medical students, non-anaesthetist physicians and allied health professionals all unfamiliar with the i-gel. Fifty i-gels were placed in manikins.