Low duty cycle pulsed UV technique for spectroscopy of aluminum monochloride.

We present what we believe to be a novel technique to minimize UV-induced damage in experiments that employ second-harmonic generation cavities. The principle of our approach is to reduce the duty cycle of the UV light as much as possible to prolong the lifetime of the used optics. The low duty cycle is achieved by ramping the cavity into resonance for a short time during the experimental cycle when the light is used and tuning it to an off-resonant state otherwise.

A feature-based qualitative assessment of smoking cessation mobile applications.

Understanding users' acceptance of smoking cessation interventions features is a precursor to mobile cessation apps' uptake and use. We gauged perceptions of three features of smoking cessation mobile interventions (self-monitoring, tailored feedback and support, educational content) and their design in two smoking cessation apps, Quit Journey and QuitGuide, among young adults with low socioeconomic status (SES) who smoke. A convenience sample of 38 current cigarette smokers 18-29-years-old who wanted to quit and were non-college-educated nor currently enrolled in a four-year college participated in 12 semi-structured virtual focus group discussions on GoTo Meeting.

The risk of revision surgery after trainee-led primary total hip replacement.

Introduction: The aim of this study was to determine the impact of operating surgeon grade and level of supervision on the incidence of one-year patient mortality and all-cause revision following elective primary total hip replacement (THR).

Methods: National Joint Registry data from 2005 to 2020 for a single University Teaching Hospital were used, with analysis performed on the 15-year dataset divided into 5-year block periods (B1, 2005-2010; B2, 2010-2015; B3, 2015-2020). Outcome measures were mortality and revision surgery at one year, in relation to lead surgeon grade, and level of supervision for trainee-led (TL) operations.

Perceptions of the Use of Mobile Technologies for Smoking Cessation: Focus Group Study With Individuals of Low Socioeconomic Status Who Smoke.

Background: The use of mobile technologies to deliver behavioral health interventions, including smoking cessation support, has grown. Users' perceptions are important determinants of the adoption and use of new technologies. However, little is known about users' perceptions of mobile technologies as smoking cessation aids, particularly among disadvantaged individuals who smoke.