Structurally and electronically driven uniaxial negative thermal expansion in BaIrO.

Negative thermal expansion is known to exist in a range of structure types but is extremely rare in hexagonal perovskites. Here we demonstrate that BaIrO displays negative linear thermal expansion in the direction of its face-shared IrO trimers, and apparent zero volume thermal expansion below 100 K. We present evidence that this anomalous thermal expansion is driven by an unusual form of rigid body phonon behaviour governed by the effective trimer valence state and therefore has structural and electronic components to the underlying mechanism.

Pilot cluster randomised controlled trial of Stepping Stones and Creating Futures Plus to reduce emotional dysregulation among young men in rural areas and urban informal settlements in KwaZulu-Natal Province, South Africa.

Aim: Emotional dysregulation (ED) - the difficulty to control emotional responses to stressors - is a potential driver of intimate partner violence (IPV) perpetration among young men in HIV endemic resource-limited settings. This two-armed pilot cluster randomised controlled trial investigated the effectiveness of Stepping Stones and Creating Futures Plus (SSCF+), a participatory gender transformative and livelihood strengthening intervention, on the emotional dysregulation (ED) among young men in South Africa (SA).

Methods: A total of 163 young men ages 18 to 30 years were recruited in 30 clusters (friendship groups) in urban informal settlements and rural areas in KwaZulu-Natal, SA.

Morphology of the First Tarsometatarsal Joint and the Incidence of Arthritis and Post-operative Complications.

Introduction The first tarsometatarsal joint (TMTJ) is often overlooked regarding foot pathology or a secondary measure in most studies, despite its heavy involvement in surgical procedures and foot stability. The primary aim of this study is to assess the effect of the first TMTJ morphology on the incidence of arthritis and post-operative complications following a Lapidus procedure. Materials and methods A total of 39 feet/subjects (19 left and 20 right) were assessed by two independent reviewers.

Young Men's Experiences of Being Fathered and Absent Father's Experience: A Case Study from Urban Informal Settlements in South Africa.

The impact of absent fathers can be a significant challenge for young people, but particularly for young men. Our study drew on 19 in-depth interviews with young men living in urban informal settlements in South Africa, to understand how they understood the impact of biological father absence. Young men described an idealized fatherhood role in which biological fathers provided economic support, active fathering (including emotional support), and social recognition of children.