Biomedical subjects
Publications and source records attributed to G Archibald.
We describe a neutron radiography technique that can be used to map the distribution of 3He impurities in liquid 4He, providing direct and quantitative access to underlying transport processes. Images reflecting finite normal- and superfluid-component 4He velocity fields are presented.
The time-dependent diffusion of 3Heatoms perpendicular to the axis of a single macroscopically large cylindrical pore is studied using a steady (or constant) gradient-recalled echo sequence. Measurements of the effective 3Hediffusion coefficient extending from the free-diffusion regime to the motionally averaged regime are presented, and are well-described by analytic solutions to the Bloch-Torrey equation based on the gaussian phase approximation. Our data yield the value 0.140(6)m2/s for the self diffusion coefficient of 3Heat a temperature of 296 K and a pressure of 1.00 Torr. Adaptations of these methods should enable the study of complex pore geometries as model systems.
Nurses have a responsibility to meet the health needs of culturally diverse groups of patients. The health needs of patients with a terminal illness from the South Asian community are often not met. Nurses need to ensure that they have the knowledge and information available to meet the needs of this patient group.
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Explore the source record for details and available documents.
Explore the source record for details and available documents.
For some time, nursing has been based on the structure of the nursing process and nursing models. However, in an age where the old order of science and medicine can no longer answer all of society's questions, can a nursing model, with its roots firmly based in the modernist structure of the nursing process, be post-modern?