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Purpose: We aim to evaluate the repeatability of a new fluorescence lifetime imaging (FLIM) technique which measures time-resolved autofluorescence to assess metabolism of the retina. Materials and methods: We performed FLIM with two spectral channels (channel 1: 490–560 nm and channel 2: 560–700 nm) on 10 healthy volunteers, with 10 replicates per volunteer. From the 30 fundus FLIM images, we ...
With ever increasing use of imaging as a diagnostic tool in medicine, medical schools are being urged to further integrate imaging into their curricula. Ultrasound is one such way of doing so-enabling students to bridge the gap between form and function, medical school and clinical practice. As a non-invasive imaging technique, with low risk when compared to other methods of imaging, ultrasound...
Post Graduate Program in Health Sciences, Faculty of Medicine, Federal University of Uberlândia, Minas Gerais, Brazil, Department of Internal Medicine, Faculty of Medicine, Federal University of Uberlândia, Minas Gerais, Brazil, Nutrition course, Faculty of Medicine, Federal University of Uberlândia, Minas Gerais, Brazil, Department of Pediatrics, Faculty of Medicine, Federal University of Uber...
There are many theories that explain how adults learn and each has its own merits. This Guide explains and explores the more commonly used ones and how they can be used to enhance student and faculty learning. The Guide presents a model that combines many of the theories into a flow diagram which can be followed by anyone planning learning. The schema can be used at curriculum planning level, o...
Background: Most university faculty members are expected to teach. Many would benefit from instruction designed to improve lecturing. Aims: To explore the impact of a program in which video-recorded lectures were critiqued by peers. Method: Sixteen lecturers participated in this qualitative study. Four agreed to have an undergraduate lecture video-recorded for peer review. Twelve participated i...
Humans will again set foot on the moon. The moon is covered by a layer of fine dust, which can pose a respiratory hazard. We investigated the pulmonary toxicity of lunar dust in rats exposed to 0, 2.1, 6.8, 20.8 and 60.6mg/m of respirable-size lunar dust for 4weeks (6 h/day, 5 days/ week); the aerosols in the nose-only exposure chambers were generated from a jet-mill ground preparation of a lun...
Context: Electronic cigarettes (e-cigarettes) are becoming increasingly popular yet their effects on health remain unknown. Objective: To conduct the first comprehensive and standardized assessment of the acute impact of active and passive e-cigarette smoking on serum cotinine and lung function, as compared to active and passive tobacco cigarette smoking. Materials and methods: Fifteen smokers ...
Microcapsules produced by interfacial polycondensation of p-phenylenediamine (PPD) and sebacoyl chloride (SC) were studied. The products were characterized in terms of morphology, mean diameter and effectiveness of dodecane encapsulation. The use of Tween 20 as dispersion stabilizer, in comparison with polyvinyl alcohol (PVA), reduced considerably the mean diameter of the microcapsules and orig...
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