987 research outputs found
Direct Measurement of the Magnetocaloric Effect through Time-Dependent Magnetometry
The magnetocaloric effect of a given material is typically assessed through indirect estimates of the isothermal magnetic entropy change, ΔSM. While estimating the adiabatic temperature difference, ΔTad, is more relevant from the standpoint of refrigeration device engineering, this requires specialized experimental setups. We here present an approach to directly measure ΔTad through time-dependent magnetometry in a commercial superconducting quantum interference device (SQUID) device. We use as reference material gadolinium under a 20-kOe field change, and compare our results with those of the literature. Under nonadiabatic experimental conditions, a remarkably similar ΔTad(T) curve profile is obtained; however, its peak amplitude is underestimated. With a simple compensation methodology we are able to further approximate the profile of the ΔTad(T) curve obtaining the peak amplitude, the maximizing temperature, and the FWHM within relative errors of -4%, -0.7%, and 11%, respectively. Our reported approach makes the measurement of both ΔSM(T) and ΔTad(T) possible with a single instrument, enabling accelerated progress towards new, competitive, and industry-ready materials.publishe
Dois Casos de Quérion por Trichophyton Mentagrophytes
Introdução: O Quérion é uma forma rara e infl amatória de tinea capitis causada por fungos dermatófi tos. O diagnóstico é difi
cultado pela demora no exame cultural e possibilidade de várias etiologias no diagnóstico diferencial. O tratamento é prolongado e implica o recurso a antifúngicos sistémicos. Novos fármacos
têm sido considerados após a descontinuação da griseofulvina
em Portugal.
Casos clínicos: Apresentamos duas crianças com lesões dolorosas do couro cabeludo com reação infl amatória exuberante,
exsudativa e alopécia local acompanhadas de febre. O exame bacteriológico foi negativo e o micológico revelou Trichophyton mentagrophytes. Foram medicados com fl ucloxacilina endovenosa,
antifúngicos orais (griseofulvina e itraconazol), corticoide e antifúngico tópicos. A resposta foi favorável com evolução lenta para a cura com área de alopécia residual.
Conclusão: Estes casos destacam -se pela sua raridade e ilustram a exuberância das manifestações clínicas desta entidade.
O diagnóstico precoce, a identificação e tratamento da fonte de contágio e as medidas de higiene e vigilância sanitária são primordiais para o controlo da infecção
Engaging the community in transforming maternal care
With 48% of girls married before the age of 18 and 46% of girls aged 15-19 already having at least one child, sexual and reproductive health education and support for adolescents is paramount. The research goal was to develop and implement community engagement interventions that promote better maternal and infant outcomes. Recommendations include developing a manual for teachers who conduct traditional initiation rites for training adolescents on sexual reproductive health, and regular radio broadcasts of key sexual and reproductive health messages in rural areas. The policy brief outlines successful actions taken to increase sexual and reproductive health by engaging communities, and through information campaigns.Global Affairs Canada (GAC)Canadian Institutes of Health Research (CIHR
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Attraction and Passage Efficiency of a Vertical-Slot Fish Pass for Sea Lamprey
On the mutual effect of ion temperature gradient instabilities and impurity peaking in the reversed field pinch
The presence of impurities is considered in gyrokinetic calculations of ion
temperature gradient (ITG) instabilities and turbulence in the reversed field
pinch device RFX-mod. This device usually exhibits hollow Carbon/Oxygen
profiles, peaked in the outer core region. We describe the role of the
impurities in ITG mode destabilization, and analyze whether ITG turbulence is
compatible with their experimental gradients.Comment: 19 pages, 9 figures, accepted for publication in Plasma Phys.
Control. Fusio
Enhancing access to safe and timely caesarian sections by prioritizing quality care and building strong partnerships in Nakitiri, Mozambique
The Alert Community Prepared Hospital (ACPH) project team designed a strategy for the provision of safe and timely C-sections at Marrere General Hospital (MGH) in Nakitiri, Mozambique. The MGH surgery department introduced a second operating room through a joint undertaking: the ACPH project paid for equipment, the MGH facilitated the implementation measures and private Canadian donors covered construction costs. This briefing paper provides a synopsis of the project aims, background and activities.Global Affairs Canada (GAC)Canadian Institutes of Health Research (CIHR
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