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A Study of the λ10830 He I Line Among Red Giants in Messier 13
Two properties of Messier 13 are pertinent to the study of mass loss among metal-poor stars and the chemical evolution of globular clusters: (1) an extended blue horizontal branch, which seems to demand mass loss from red giant progenitor stars and possibly an enhanced helium abundance, and  the presence of internal abundance inhomogeneities of elements in the mass range from C to Al. A popul...


Effect of strain rate and temperature on the mechanical behavior of magnesium nanocomposites
Magnesium-based composites with high specific properties have been found to be promising candidate for automotive and aerospace applications where materials are subjected to impact and elevated temperature conditions. AZ31B Mg alloy reinforced by 1.0vol% silicon carbide nanoparticles was investigated under quasi-static and impact conditions. The impact tests were carried out on the split Hopkin...
Dynamic interaction of heat transfer, air flow and disc vibration of disc drives — Theoretical development and numerical analysis
Steady state air flow, heat transfer and thermoelastic dynamics in the multi-field coupling system of a rotating flexible disc in an enclosure filled with air are investigated within a large speed range. The system represents rotating discs in hard disc drives and optical disc drives. With Navier–Stokes and continuity equations and an improved penalty finite element method, air velocities and...


An elasticity solution for functionally graded thick-walled tube subjected to internal pressure
An elasticity solution for the functionally graded thick-walled tube subjected to internal pressure is given in terms of volume fractions of constituents. We assume that the tube consists of two linear elastic constituents and the volume fraction for one phase is a power function c ( r ) = c 0 [ 1 − k ( r / b ) n ] varied in the radial direction. By using the rule of mixture a...
Large aneurysm in renal angiomyolipoma causing life-threatening retroperitoneal hemorrhage
Large aneurysms occurring in renal angiomyolipomas (AML) may be encountered. When present, they have a higher propensity to hemorrhage and cause catastrophic intratumoral and perirenal hemorrhages. They also tend to occur more in tuberous sclerosis-associated AML rather than in the sporadic form. A 22-year-old female presented with sudden onset of acute right abdominal pain, hematuria and faint...


Urological outcome in patients with Currarino syndrome
Currarino syndrome is a type of caudal regression syndrome characterized by the association of hemisacrum, anorectal malformation and presacral mass. Only few studies on small series report the incidence of urinary dysfunction in Currarino syndrome. Our aim was to evaluate the urological outcome in patients with Currarino syndrome. We retrospectively reviewed all Currarino syndrome patients tre...
Irreducible inguinal hernia in children: how serious is it?
We evaluated the experience with irreducible inguinal hernias at our institution. We reviewed patients with an inguinal hernia operation at our institution between 1st January 2004 and 31st December 2013. Individuals with a failed manual reduction of an incarcerated hernia under sedation by the attending surgeon were included into the study group as irreducible hernia. Overall 2184 individuals ...

Time to First Use Among Daily Smokers and Smokeless Tobacco Users
Time to the first cigarette after waking up in the morning is the most validated measure of dependence among smokers, and its complement is also a good indicator of dependence for smokeless tobacco (ST) users. However, no studies have directly compared these measures. We used a multivariate logistic regression model to compare the time to first use (FU) of cigarettes and ST among white men 18+ ...
Withdrawal from Chronic Nicotine Reduces Thyroid Hormone Levels and Levothyroxine Treatment Ameliorates Nicotine Withdrawal-Induced Deficits in Hippocampus-Dependent Learning in C57BL/6J Mice
Cigarette smoking alters a variety of endocrine systems including thyroid hormones. Altered thyroid hormone signaling may lead to a subclinical or overt hypothyroid condition that could contribute to nicotine withdrawal-related symptoms, such as cognitive deficits. Thus, normalizing thyroid hormone levels may represent a novel therapeutic target for ameliorating nicotine withdrawal-associated c...

Characterizing Concurrent Tobacco Product Use among Homeless Cigarette Smokers
Cigarette smoking prevalence rates are high among homeless adults (>70%); however, little is known about concurrent tobacco or other nicotine product use (CU) in this population. CU may impact smoking quit rates and confer greater risk of health problems within this vulnerable population. This study characterized CU in a sample of homeless smokers, and compared cigarette-only smokers (C-OS) to ...
Ever use of nicotine and non-nicotine electronic cigarettes among high school students in Ontario, Canada
There are limited data on the use of e-cigarettes among youth, particularly with regard to the use of nicotine versus non-nicotine products. This study investigates ever use of nicotine and non-nicotine e-cigarettes and examines the demographic and behavioural correlates of e-cigarette use in Ontario, Canada. Data for 2892 high school students were derived from the 2013 Ontario Student Drug Use...

Opinions about Electronic Cigarette Use in Smoke-Free Areas among U.S. Adults, 2012
In the U. S., electronic cigarettes (e-cigarettes) are currently unregulated, extensively marketed, and experiencing a rapid increase in use. The purpose of this study was to examine the opinions of U. S. adults about e-cigarette use in smoke-free public areas. Data were obtained from the online HealthStyle survey administered to a probability sample of a nationally representative online panel....
Price support by bank-affiliated mutual funds
Fund managers are double agents; they serve both fund investors and owners of management firms. This conflict of interest may result in trading to support securities prices. Tests of this hypothesis in the Spanish mutual fund industry indicate that bank-affiliated mutual funds systematically increase their holdings in the controlling bank stock around seasoned equity issues, at the time of bad ...
Investigation of Efficiency and Droop Behavior Comparison for InGaN/GaN Super Wide-Well Light Emitting Diodes Grown on Different Substrates
In this work, efficiency droop of InGaN/GaN multiple-quantum-well LEDs with super wide well (WW) is discussed by comparing the external quantum efficiency (EQE) of GaN grown on sapphire and FS-GaN substrates. The luminescence and electrical characteristics of these WW LEDs are also experimentally and theoretically analyzed. With the increase of well width from 3 nm to 6 nm, high V-pits density ...
Microwave Photonics Filtering Technique for Interrogating a Very-Weak Fiber Bragg Grating Cascade Sensor
A system to interrogate photonic sensors based on a very weak fiber Bragg grating cascade fiber is presented and experimentally validated and dedicated to detecting the presence and location of a spot event. The distributed sensor proposed consists of a 5-m-long fiber, containing 500 9-mm-long Bragg gratings with a grating separation of 10.21 mm. The principle of operation is based on a techniq...