Update of the CLRP TG-43 parameter database for low-energy brachytherapy sources.

Purpose: To update the Carleton Laboratory for Radiotherapy Physics (CLRP) TG-43 dosimetry database for low-energy (≤50 keV) photon-emitting low-dose rate (LDR) brachytherapy sources utilizing the open-source EGSnrc application egs_brachy rather than the BrachyDose application used previously for 27 LDR sources in the 2008 CLRP version (CLRPv1). CLRPv2 covers 40 sources ( Pd, I, and Cs). A comprehensive set of TG-43 parameters is calculated, including dose-rate constants, radial dose functions with functional fitting parameters, 1D and 2D anisotropy functions, along-away dose-rate tables, Primary-Scatter separation dose tables (for some sources), and mean photon energies at the surface of the sources.

Helicopter Hoist Performance in Novice and Experienced Hoist Operators.

Helicopter hoist operators are highly skilled and critical crewmembers in search and rescue. However, hoist operator training programs are relatively underdeveloped in comparison to helicopter pilot training. It is critical that this simulator teaches the necessary skills for high-level performance given the dangers associated with helicopter hoist operation.

Effect of Biological Maturation on Performance of the Athletic Ability Assessment in Australian Rules Football Players.

Purpose: To determine the effect of biological maturation on athletic movement competency as measured using the Athletic Ability Assessment-6.

Methods: Fifty-two junior Australian Rules football players were split into 3 groups based on proximity to peak height velocity, while 46 senior players were split into 2 groups based on playing status. The subjects completed the Athletic Ability Assessment-6 (inclusive of the overhead squat, double lunge, single-leg Romanian dead lift, push-up, and chin-up).

A Chip-Scale Oscillation-Mode Optomechanical Inertial Sensor Near the Thermodynamical Limits.

Modern navigation systems integrate the global positioning system (GPS) with an inertial navigation system (INS), which complement each other for correct attitude and velocity determination. The core of the INS integrates accelerometers and gyroscopes used to measure forces and angular rate in the vehicular inertial reference frame. With the help of gyroscopes and by integrating the acceleration to compute velocity and distance, precision and compact accelerometers with sufficient accuracy can provide small-error location determination.

Short-term Outcomes After Very Low-Dose Intravitreous Bevacizumab for Retinopathy of Prematurity.

Importance: Intravitreous bevacizumab (0.25 mg to 0.625 mg) is commonly used to treat type 1 retinopathy of prematurity (ROP), but there are concerns about systemic toxicity, particularly the risk of neurodevelopmental delay.

Dewar Benzenoids Discovered In Carbon Nanobelts.

The synthesis of cyclacene nanobelts remains an elusive goal dating back over 60 years. These molecules represent the last unsynthesized building block of carbon nanotubes and may be useful both as seed molecules for the preparation of structurally well-defined carbon nanotubes and for understanding the behavior and formation of zigzag nanotubes more broadly. Here we report the discovery that isomers containing two Dewar benzenoid rings are the preferred form for several sizes of cyclacene.

Type species designation for Archaebranchinecta Rogers amp; Coronel (Branchiopoda: Anostraca).

Over the course of my career I have described nine Branchiopod genera and one subgenus, either alone or with other researchers. From these, four genera and the subgenus belong to Anostraca. But I was remiss in designating type species for one of those taxa which caused the name to become unavailable.

Sleep disturbance in pediatric intracranial hypertension.

Study Objectives: There is a well-established association between headache disorders and sleep disturbances in children, but it is unknown whether sleep disturbance plays a role in pediatric intracranial hypertension. The objective of this study was to examine sleep issues related to pediatric intracranial hypertension.

Methods: Patients with intracranial hypertension in the Pediatric Intracranial Hypertension Clinic were recruited between July 2017 and September 2018.

Sleep Disturbance in Pediatric Intracranial Hypertension.

Study Objectives: There is a well-established association between headache disorders and sleep disturbances in children, but it is unknown if sleep disturbance plays a role in pediatric intracranial hypertension. The objective of this study was to examine sleep issues related to pediatric intracranial hypertension.

Methods: Patients with intracranial hypertension who were followed in the Pediatric Intracranial Hypertension Clinic were recruited between July 2017 and September 2018.

Measuring Mobility in Low Functioning Hospital Patients: An AM-PAC Replenishment Project.

Objective: To expand an existing validated measure of basic mobility (Activity Measure for Post-Acute Care [AM-PAC]) for patients at the lowest levels of function.

Design: Item replenishment for existing item response theory (IRT) derived measure via (1) idea generation and creation of potential new items, (2) item calibration and field testing, and (3) longitudinal pilot test.

Setting: Two tertiary acute care hospitals.

Radiographic and Endoscopic Features of Pancreaticoduodenal Malakoplakia.

Malakoplakia is a rare, granulomatous disorder that is typically triggered by infections in immunocompromised patients. Although it most commonly affects the urinary tract, cases may occasionally occur in the gastrointestinal tract. There are case reports of malakoplakia of the pancreas with associated pathologic description, but none with detailed imaging and endoscopic findings.

Acute Ureteral Obstruction by Deeply Inserted Menstrual Cup.

Mechanical complications from menstrual cups are rare, with only four reported cases of ureteral obstruction. Clinicians should be aware of gynecologic devices in patients with acute abdominopelvic pain because simple removal may obviate the need for further expensive work-up or exposure to ionizing radiation.

sp. nov., A New Laevicaudatan Clam Shrimp with Asymmetrically Modified Thoracopods from Yunnan, China (Crustacea: Branchiopoda).

Laevicaudata has a nearly global distribution, but only a few records from China. We present a new (Crustacea: Branchiopoda: Laevicaudata) species, sp. nov.

Enabling Domain Expertise in Scientific Visualization With CinemaScience.

Scientific users present unique challenges to visualization researchers. Their high-level tasks require them to apply domain-specific expertise. We introduce a broader audience to the CinemaScience project and demonstrate how CinemaScience enables efficient visualization workflows that can bring in scientist expertise and drive scientific insight.

Factors Contributing to the Status of Group Programming at Psychology Internship Sites.

Previous research has explored administrative factors that may predict the health of group programs in college counseling centers. The current study seeks to extend this research to a more diverse set of mental health agencies. Directors of training (N = 171) at mental health agencies that host doctoral interns in psychology completed a survey about their site's group offerings, attitudes about group, and training opportunities for interns.

The American Association for the Surgery of Trauma renal injury grading scale: Implications of the 2018 revisions for injury reclassification and predicting bleeding interventions.

Background: In 2018, the American Association for the Surgery of Trauma (AAST) published revisions to the renal injury grading system to reflect the increased reliance on computed tomography scans and non-operative management of high-grade renal trauma (HGRT). We aimed to evaluate how these revisions will change the grading of HGRT and if it outperforms the original 1989 grading in predicting bleeding control interventions.

Methods: Data on HGRT were collected from 14 Level-1 trauma centers from 2014 to 2017.

Cinema:Bandit: a visualization application for beamline science demonstrated on XFEL shock physics experiments.

A new visualization tool, Cinema:Bandit, and its demonstration with a continuous workflow for analyzing shock physics experiments and visually exploring the data in real time at X-ray light sources is presented. Cinema:Bandit is an open-source, web-based visualization application in which the experimenter may explore an aggregated dataset to inform real-time beamline decisions and enable post hoc data analysis. The tool integrates with experimental workflows that process raw detector data into a simple database format, and it allows visualization of disparate data types, including experimental parameters, line graphs, and images.

Equivalence of Oral Fluorescein Angiography to Intravenous Fluorescein Angiography in Evaluating Pediatric Optic Nerve Pathology.

Differentiating true optic nerve edema from pseudo-optic nerve edema is a diagnostic dilemma faced by pediatric ophthalmologists. This case series suggests that oral fluorescein angiography is equivalent to intravenous fluorescein angiography in making this distinction. [J Pediatr Ophthalmol Strabismus.

Atomically Defined Nanopropeller FeCoSe(PhPNTol): Functional Model for the Electronic Metal-Support Interaction Effect and High Catalytic Activity for Carbodiimide Formation.

Atomically defined interfaces that maximize the density of active sites and harness the electronic metal-support interaction are desirable to facilitate challenging multielectron transformations, but their synthesis remains a considerable challenge. We report the rational synthesis of the atomically defined metal chalcogenide nanopropeller FeCoSeL (L = PhPNTol) featuring three Fe edge sites, and its ensuing catalytic activity for carbodiimide formation. The complex interaction between the Fe edges and CoSe support, including the interplay between oxidation state, substrate coordination, and metal-support interaction, is probed in detail using chemical and electrochemical methods, extensive single crystal X-ray diffraction, and electronic absorption and Mössbauer spectroscopy.

Nanoharvesting of bioactive materials from living plant cultures using engineered silica nanoparticles.

Plant secondary metabolites are valuable therapeutics not readily synthesized by traditional chemistry techniques. Although their enrichment in plant cell cultures is possible following advances in biotechnology, conventional methods of recovery are destructive to the tissues. Nanoharvesting, in which nanoparticles are designed to bind and carry biomolecules out of living cells, offers continuous production of metabolites from plant cultures.

Validation of the Postnatal Growth and Retinopathy of Prematurity Screening Criteria.

Importance: The first Postnatal Growth and Retinopathy of Prematurity Study (G-ROP-1) developed new screening criteria with 100% sensitivity for type 1 retinopathy of prematurity (ROP) and 30% reduction of infants requiring examinations in a retrospective development cohort of 7483 infants from 29 North American hospitals in 2006-2012. Infants meeting 1 or more of the following criteria undergo examinations: gestational age less than 28 weeks or birth weight less than 1051 g; weight gain less than 120 g during age 10 to 19 days, weight gain less than 180 g during age 20 to 29 days, or weight gain less than 170 g during age 30 to 39 days; or hydrocephalus.

Objective: To evaluate the generalizability of the G-ROP screening criteria in a new cohort of at-risk infants.

Barriers and facilitators to recommended physical activity in lower-limb osteoarthritis: protocol for a qualitative study exploring patients and physiotherapist perspectives using the theoretical domains framework and behaviour change taxonomy.

Introduction: Osteoarthritis (OA) is the leading cause of disability and pain in older adults. Although increasing physical activity (PA) can help reduce symptoms, patients with lower-limb OA are less active than the general public. Although physiotherapists commonly deliver PA programmes, they lack knowledge of key barriers and facilitators to adherence to prescribed PA that patients with lower-limb OA experience while attending physiotherapy appointments (treatment period) and after discharge (post-treatment period).