Cycle-to-cycle flow variations in a square duct with a symmetrically oscillating constriction.

Spatially and temporally resolved Digital Particle Image Velocimetry (DPIV) measurements are presented of flow complexities in a nominally two-dimensional, symmetric, duct with an oscillating constriction. The motivation for this research lies in advancing the state-of-the-art in applying integral control volume analysis to modeling unsteady internal flows. The specific target is acoustic modeling of human phonation.

Vitamin D deficiency in older men.

Context: Vitamin D deficiency is not adequately evaluated in older men.

Objective: The aim of the study was to determine the prevalence of vitamin D deficiency and identify risk factors for its occurrence.

Design And Setting: We conducted a cross-sectional evaluation of 1606 older men in the general community who were enrolled in the Osteoporotic Fractures in Men Study.

Lower urinary tract symptoms increase the risk of falls in older men.

OBJECTIVE To evaluate the association of lower urinary tract symptoms (LUTS) with the risk of falls in elderly community-dwelling men. SUBJECTS AND METHODS We evaluated 5872 participants in the Osteoporotic Fractures in Men, a prospective cohort study of risk factors for falls and osteoporotic fractures among community-dwelling men aged > or =65 years. The primary outcome was the 1-year cumulative incidence of falls in men with moderate or severe, vs mild LUTS at baseline, as measured by the American Urological Association Symptom Index.

The association between advertising and calls to a tobacco quitline.

Objective: This study assessed the cost effectiveness of different types of television and radio advertisements and the time of day in which advertisements were placed in generating calls to the Oregon tobacco quitline.

Design: Cost effectiveness was measured by cost per call, calculated as the cost of advertising divided by the number of quitline calls generated by that advertising. Advertising was bought in one-week or two-week blocks and included 27 daytime television buys, 22 evening television buys and 31 radio buys.

Identification of vertebral fracture and non-osteoporotic short vertebral height in men: the MrOS study.

Unlabelled: Non-osteoporotic SVH may mimic VF but is excluded in ABQ. In men, this led to discordance between ABQ and other methods, but SVH was not linked to low bone density. Exclusion of SVH could reduce false positives.

Prevalence, severity, and health correlates of lower urinary tract symptoms among older men: the MrOS study.

Objectives: To describe the prevalence, severity, and health correlates of lower urinary tract symptoms (LUTS) in older community-dwelling U.S. men.

Endogenous testosterone levels, physical performance, and fall risk in older men.

Background: Gonadal steroid levels decline with age in men. Whether low testosterone levels affect the development of common age-related disorders, including physical functioning and falling, is unclear.

Methods: This longitudinal, observational follow-up study sought to determine whether low testosterone levels are associated with physical performance and fall risk in older men.

Dimensions and volumetric BMD of the proximal femur and their relation to age among older U.S. men.

Unlabelled: We measured femoral neck and shaft dimensions and volumetric BMD with QCT. Relations of these measures to age were quantified in a cross-sectional study among 3358 men 65-100 years old. Relations of femoral neck dimensions and vBMD to age differed from those in the shaft, indicating that patterns of bone modeling and remodeling in the neck and shaft are distinct.

Testosterone and estradiol among older men.

Context: Testosterone and estradiol levels decline with age in men. This change may affect multiple clinical outcomes, but there have been few reports of the distribution and correlates of testosterone and estradiol concentrations in elderly men.

Objective: The purpose of these studies was to assess sex steroid levels in a large cohort of older men.

Predictors of glucose control in children and adolescents with type 1 diabetes mellitus.

Aims: To evaluate the glucose control [(as measured by hemoglobin A1c (HbA1c)], the factors associated with glycemic control, and possible explanations for these associations in a sample of children and adolescents with type 1 diabetes.

Methods: Data were collected on 155 children and adolescents, with type 1 diabetes mellitus, attending a multidisciplinary diabetes clinic in Portland, OR. Patients' hospital charts were reviewed to determine demographic factors, disease-related characteristics, and HbA1c level.