Time-resolved and multiple-angle Thomson scattering on gas-puff Z-Pinch plasmas at pinch time.

A 526.5 nm Thomson scattering diagnostic laser enables probing of the plasma conditions of neon gas-puff z-pinch implosions with temporal resolution. Splitting the laser into two 2.

Quantifying patient bacterial exposure risk from reusable phlebotomy tourniquets in a New Zealand secondary level hospital.

Aim: This study aimed to assess for the presence of multi-drug resistant organisms (MDROs) on tourniquets and quantify the number of bacteria to which patients might be exposed with each blood collection episode.

Methods: Tourniquets were randomly sampled in a 246-bed, secondary level, New Zealand hospital, which is currently non-endemic for MDROs. A 6-cm length of each tourniquet sampled was applied to the surface of an agar plate and the colony forming units (CFUs) were enumerated.

A doubly curved elliptical crystal spectrometer for the study of localized x-ray absorption in hot plasmas.

X-ray absorption spectroscopy is a powerful tool for the diagnosis of plasmas over a wide range of both temperature and density. However, such a measurement is often limited to probing plasmas with temperatures well below that of the x-ray source in order to avoid object plasma emission lines from obscuring important features of the absorption spectrum. This has excluded many plasmas from being investigated by this technique.

Study of nanosecond pulsed magnetic fields using temporally resolved Faraday rotation through a magneto-optical waveguide.

We have measured magnetic fields up to 17.7 T with a rise time of 75 ns using temporally resolved Faraday rotation of a single longitudinal mode laser beam through a magneto-optically active bulk waveguide. We believe this to be the first time that such large, rapidly varying magnetic fields have been measured with this class of materials (multicomponent terbium borate glass).

Murine typhus and febrile illness, Nepal.

Murine typhus was diagnosed by PCR in 50 (7%) of 756 adults with febrile illness seeking treatment at Patan Hospital in Kathmandu, Nepal. Of patients with murine typhus, 64% were women, 86% were residents of Kathmandu, and 90% were unwell during the winter. No characteristics clearly distinguished typhus patients from those with blood culture-positive enteric fever.

Determination of the size and structure of an X-pinch x-ray source from the diffraction pattern produced by microfabricated slits.

X-pinch plasma emits subnanosecond bursts of x rays in the 3-10-keV energy range from a small source. As such, it has been used for high-resolution point-projection imaging of small, dense, rapidly changing plasmas as well as for submillimeter-thick biological samples. In addition to the effect of source size on geometric resolution, a small source size can also provide high spatial coherence of x rays, enabling the rays to be used for imaging weakly absorbing objects with excellent spatial resolution by a method called phase-contrast imaging.