Adolescent perspectives of bedtime social media use: A qualitative systematic review and thematic synthesis.

Adolescence is often characterised by changes in sleep patterns, with reports that the average adolescent does not get the recommended sleep time. Recent qualitative research has identified the use of electronics at bedtime and engagement with social media platforms as barriers to gaining sufficient time and quality of sleep during adolescence. A systematic review and thematic synthesis was undertaken following the three-step thematic synthesis framework.

Ultrafast photochemistry produces superbright short-wave infrared dots for low-dose in vivo imaging.

Optical probes operating in the second near-infrared window (NIR-II, 1,000-1,700 nm), where tissues are highly transparent, have expanded the applicability of fluorescence in the biomedical field. NIR-II fluorescence enables deep-tissue imaging with micrometric resolution in animal models, but is limited by the low brightness of NIR-II probes, which prevents imaging at low excitation intensities and fluorophore concentrations. Here, we present a new generation of probes (AgS superdots) derived from chemically synthesized AgS dots, on which a protective shell is grown by femtosecond laser irradiation.

Publisher Correction: Femtosecond laser fabrication of silver nanostructures on glass for surface enhanced Raman spectroscopy.

An amendment to this paper has been published and can be accessed via a link at the top of the paper.

A Randomized Crossover Trial of Conventional versus Modified "Koch" Chest Compressions in a Height-Restricted Aeromedical Helicopter.

Low overhead height can negatively affect chest compression performance. An adapted compression technique has been proposed by paramedic H. Koch (pron.

Femtosecond laser fabrication of silver nanostructures on glass for surface enhanced Raman spectroscopy.

We report on an optimized fabrication protocol for obtaining silver nanoparticles on fused silica substrates via laser photoreduction of a silver salt solution. We find that multiple scans of the laser over the surface leads to a more uniform coverage of densely packed silver nanoparticles of approximately 50 nm diameter on the fused silica surface. Our substrates yield Raman enhancement factors of the order of 10 of the signal detected from crystal violet.

Professional Competencies ToolKit: Using Flash Cards to Teach Reflective Practice to Medical Students in Clinical Clerkship.

Introduction: Early clinical experiences can be overwhelming to medical students. The Professional Competencies ToolKit (ProComp ToolKit) gives medical students a framework on which to build these early experiences and reflect on issues related to professionalism as each patient encounter unfolds.

Methods: The ProComp ToolKit is a set of 28 flash cards, grouped within six domains of professional competency.

Rapid Laser Manufacturing of Microfluidic Devices from Glass Substrates.

Conventional manufacturing of microfluidic devices from glass substrates is a complex, multi-step process that involves different fabrication techniques and tools. Hence, it is time-consuming and expensive, in particular for the prototyping of microfluidic devices in low quantities. This article describes a laser-based process that enables the rapid manufacturing of enclosed micro-structures by laser micromachining and microwelding of two 1.

Learning From Patients: Why Continuity Matters.

Purpose: Patient continuity, described as the student participating in the provision of comprehensive care of patients over time, may offer particular opportunities for student learning. The aim of this study was to describe how students experience patient continuity and what they learn from it.

Method: An interpretive phenomenological study was conducted between 2015 and 2016.

Utilization Criteria for Prehospital Ultrasound in a Canadian Critical Care Helicopter Emergency Medical Service: Determining Who Might Benefit.

Unlabelled: Introduction Prehospital ultrasound (PHUS) assessments by physicians and non-physicians are performed on medical and trauma patients with increasing frequency. Prehospital ultrasound has been shown to be of benefit by supporting interventions. Problem Which patients may benefit from PHUS has not been clearly identified.

Slanted channel microfluidic chip for 3D fluorescence imaging of cells in flow.

Three-dimensional cellular imaging techniques have become indispensable tools in biological research and medical diagnostics. Conventional 3D imaging approaches employ focal stack collection to image different planes of the cell. In this work, we present the design and fabrication of a slanted channel microfluidic chip for 3D fluorescence imaging of cells in flow.

Five-year Retrospective Review of Physician and Non-physician Performed Ultrasound in a Canadian Critical Care Helicopter Emergency Medical Service.

Objective: To describe the use of prehospital ultrasonography (PHUS) to support interventions, when used by physician and non-physician air medical crew (AMC), in a Canadian helicopter emergency medical service (HEMS).

Methods: A retrospective review was conducted of consecutive patients who underwent ultrasound examination during HEMS care from January 1, 2009 through March 10, 2014. An a priori created data form was used to record patient demographics, type of ultrasound scan performed, ultrasound findings, location of scan, type of interventions supported by PHUS, factors that affected PHUS completion, and quality indicator(s).

Determining the 3D orientation of optically trapped upconverting nanorods by in situ single-particle polarized spectroscopy.

An approach to unequivocally determine the three-dimensional orientation of optically manipulated NaYF4:Er(3+),Yb(3+) upconverting nanorods (UCNRs) is demonstrated. Long-term immobilization of individual UCNRs inside single and multiple resonant optical traps allow for stable single UCNR spectroscopy studies. Based on the strong polarization dependent upconverted luminescence of UCNRs it is possible to unequivocally determine, in real time, their three-dimensional orientation when optically trapped.

Mannitol dosing error during interfacility transfer for intracranial emergencies.

Object: Mannitol is commonly used to treat elevated intracranial pressure (ICP). The authors analyzed mannitol dosing errors at peripheral hospitals prior to or during transport to tertiary care facilities for intracranial emergencies. They also investigated the appropriateness of mannitol use based on the 2007 Brain Trauma Foundation guidelines for severe traumatic brain injury.

Cattle-derived microbial input to source water catchments: An experimental assessment of stream crossing modification.

The provision of safe drinking water is a global issue, and animal production is recognized as a significant potential origin of human infectious pathogenic microorganisms within source water catchments. On-farm management can be used to mitigate livestock-derived microbial pollution in source water catchments to reduce the risk of contamination to potable water supplies. We applied a modified Before-After Control Impact (BACI) design to test if restricting the access of livestock to direct contact with streams prevented longitudinal increases in the concentrations of faecal indicator bacteria and suspended solids.

Factors Associated with Failure of Non-invasive Positive Pressure Ventilation in a Critical Care Helicopter Emergency Medical Service.

Introduction: Non-invasive positive pressure ventilation (NIPPV) is used to treat severe acute respiratory distress. Prehospital NIPPV has been associated with a reduction in both in-hospital mortality and the need for invasive ventilation.

Hypothesis/problem: The authors of this study examined factors associated with NIPPV failure and evaluated the impact of NIPPV on scene times in a critical care helicopter Emergency Medical Service (HEMS).

Developing interprofessional health competencies in a virtual world.

Background: Virtual worlds provide a promising means of delivering simulations for developing interprofessional health skills. However, developing and implementing a virtual world simulation is a challenging process, in part because of the novelty of virtual worlds as a simulation platform and also because of the degree of collaboration required among technical and subject experts. Thus, it can be difficult to ensure that the simulation is both technically satisfactory and educationally appropriate.

Twelve tips for teaching in a provincially distributed medical education program.

Background: As distributed undergraduate and postgraduate medical education becomes more common, the challenges with the teaching and learning process also increase.

Aim: To collaboratively engage front line teachers in improving teaching in a distributed medical program.

Method: We recently conducted a contest on teaching tips in a provincially distributed medical education program and received entries from faculty and resident teachers.

Physical stability and resistance to peroxidation of a range of liquid-fill hard gelatin capsule products on extreme long-term storage.

Background: The industrial take-up of liquid-fill hard capsule technology is limited in part by lack of published long-term physical and chemical stability data which demonstrate the robustness of the system.

Objective: To assess the effects of extreme long-term storage on liquid-fill capsule product quality and integrity, with respect to both the capsules per se and a standard blister-pack type (foil-film blister).

Materials And Methods: Fourteen sets of stored peroxidation-sensitive liquid-fill hard gelatin capsule product samples, originating ~20 years from the current study, were examined with respect to physical and selected chemical properties, together with microbiological evaluation.

Do procedural skills workshops during family practice residency work?

Objective: To determine if participation in a procedural skills workshop during family practice residency affects future use of these skills in postgraduate clinical practice.

Design: Survey involving self-assessment of procedural skills experience and competence.

Setting: British Columbia.

Gaussian filters and filter synthesis using a Hermite/Laguerre neural network.

A neural network for calculating the correlation of a signal with a Gaussian function is described. The network behaves as a Gaussian filter and has two outputs: the first approximates the noisy signal and the second represents the filtered signal. The filtered output provides improvement by a factor of ten in the signal-to-noise ratio.

Asymmetric kernel regression.

Kernel regression is one model that has been applied to explain or design radial-basis neural networks. Practical application of the kernel regression method has shown that bias errors caused by the boundaries of the data can seriously effect the accuracy of this type of regression. This paper investigates the correction of boundary error by substituting an asymmetric kernel function for the symmetric kernel function at data points close to the boundary.