Work-related injuries and illnesses and their association with hour of work: Analysis of the Oregon construction industry in the US using workers' compensation accepted disabling claims, 2007-2013.

Objectives: This study aimed to characterize injuries and illnesses among construction workers in the State of Oregon in the US and examine the association between injury frequency and severity with hour of work by using Workers' Compensation (WC) accepted disabling claims data in the construction industry from 2007 to 2013.

Methods: Injury frequency, rate, medical cost, and lost work days were analyzed by year, demographics, employment, injury nature, and temporal factors including hour of work. Multiple linear regression models were used to quantify adjusted associations between hour of work and medical cost and lost work days (indicating injury severity).

The distribution of implant fixation for femoral components of TKA: a postmortem retrieval study.

Aseptic loosening of total knee arthroplasty (TKA) components is the foremost cause of implant failure in the long term. While tibial component loosening is of primary concern, femoral loosening may become a clinical problem due to younger, more active patients seeking TKA, and also high-flexion designs. In this study, we analyzed the fixation for 19 non-revised, postmortem retrieved, femoral components of TKA with time in service ranging from 1 to 22 years.

A novel in vitro loading system to produce supraphysiologic oscillatory fluid shear stress.

A multi-well fluid loading (MFL) system was developed to deliver oscillatory subphysiologic to supraphysiologic fluid shear stresses to cell monolayers in vitro using standard multi-well culture plates. Computational fluid dynamics modeling with fluid-structure interactions was used to quantify the squeeze film fluid flow between an axially displaced piston and the well plate surface. Adjusting the cone angle of the piston base modulated the fluid pressure, velocity, and shear stress magnitudes.

An evaluation of the PALS after treatment modelling intervention to reduce dental anxiety in child dental patients.

Aim: The aim of this study was to assess the effectiveness of the passivity to activity through live symbolic (PALS) after treatment modelling intervention to reduce child dental anxiety.

Methods: A convenience sample of consecutive 5- to 10-year-old dental patients were randomly assigned to intervention or control groups. Self-reported child dental anxiety was assessed at the start of each visit.

Quantitative analysis of cyanobacterial toxins by matrix-assisted laser desorption ionization mass spectrometry.

Microcystins (MCs) are a growing problem in drinking water supplies worldwide. Common analytical techniques used to determine MC concentrations have several shortcomings, including extensive sample handling and lengthy analysis times. A simple, rapid method for quantitation of MCs by matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS) is presented.

Reliability and validity of a faces version of the Modified Child Dental Anxiety Scale.

Background: A new version of the Modified Child Dental Anxiety Scale (MCDAS) was formed by adding a faces rating scale to the original numeric form.

Aims: To describe the psychometric properties of the faces version of the Modified Child Dental Anxiety Scale (MCDAS(f)), and to provide normative data for dental anxiety for children using the MCDAS(f).

Design: To determine the test-retest reliability, 287 schoolchildren aged 8-10 years completed the MCDAS(f) on two separate occasions 17 weeks apart.

Adduct simplification in the analysis of cyanobacterial toxins by matrix-assisted laser desorption/ionization mass spectrometry.

A novel method for simplifying adduct patterns to improve the detection and identification of peptide toxins using matrix-assisted laser desorption/ionization (MALDI) time-of-flight (TOF) mass spectrometry is presented. Addition of 200 microM zinc sulfate heptahydrate (ZnSO(4) . 7H(2)O) to samples prior to spotting on the target enhances detection of the protonated molecule while suppressing competing adducts.

Depressive symptoms in and type of classroom placement for adolescents with LD.

This study investigated the relationship of depressive symptomatology to type of classroom placement in a sample of adolescents with learning disabilities who attended an urban public high school. Fifty-two students, half of whom were in self-contained classrooms and half of whom were in general education classrooms with resource room, self-rated their depressive symptoms. Their guidance counselors also rated these students' depressive symptoms.