Older adults' willingness to take magnesium to treat depression.

Context: Depression affects up to 15% of community-dwelling older adults. Late-life depression is frequently underdiagnosed and undertreated. When depression in older adults is identified, up to 80% of treatment occurs in primary care.

Computation of Burgers vectors from elastic strain and lattice rotation data.

A theoretical framework for computation of Burgers vectors from strain and lattice rotation data in materials with low dislocation density is presented, as well as implementation into a computer program to automate the process. The efficacy of the method is verified using simulated data of dislocations with known results. A three-dimensional dataset retrieved from Bragg coherent diffraction imaging (BCDI) and a two-dimensional dataset from high-resolution transmission Kikuchi diffraction (HR-TKD) are used as inputs to demonstrate the reliable identification of dislocation positions and accurate determination of Burgers vectors from experimental data.

Dislocation dynamics modelling of the creep behaviour of particle-strengthened materials.

Plastic deformation in crystalline materials occurs through dislocation slip and strengthening is achieved with obstacles that hinder the motion of dislocations. At relatively low temperatures, dislocations bypass the particles by Orowan looping, particle shearing, cross-slip or a combination of these mechanisms. At elevated temperatures, atomic diffusivity becomes appreciable, so that dislocations can bypass the particles by climb processes.

Malnutrition Risk, Rurality, and Falls among Community-Dwelling Older Adults.

Objectives: We aimed to evaluate if malnutrition and rurality are associated with fall risk and future falls in community-dwelling older adults.

Design: Prospective Cohort.

Setting: Community, Vermont.