No abstract

http://radiology.rsna.org/lookup/suppl/doi:10.1148/radiol.13130046/-/DC1.

No abstract

N-butyl cyanoacrylate is a safe and effective agent for embolization in patients with major hemoptysis.

Korea's rapid population aging has been considered as a major factor in increase of healthcare expenditure (HCE). However, there were no clear empirical evidences in Korea that show if population aging has a significant impact on HCE. To examine the 'red herring' argument, this study used Heckman, two-part, and augmented model with Korean National Health Insurance claim data for the deceased and survivors of aged 20 years and over verified by Korean National Health Insurance Service between January 1 and December 31, 2010. Our results suggest that when time to death is controlled for as explanatory variable, HCE decreases as a function of age, and HCE during the terminal year increases as a function of time to death, and HCE in the last quarter of life decreases with age. Therefore, this study affirms that there is no age effect in Korea experiencing the most rapid population aging among Asian countries. An increase in the number of elderly, due to the aging of baby boomers, may not increase a share of HCE out of gross domestic product (GDP) in Korea. Copyright © 2015 John Wiley & Sons, Ltd.

Monodisperse polystyrene particles crosslinked with different concentrations of divinylbenzene were synthesized in the 3.2–9.1 μm size range by dispersion polymerization in an isopropyl alcohol/toluene mixed‐dispersion medium with poly(N‐vinylpyrrolidone) as a steric stabilizer and 2,2′‐azobisisobutyronitrile as a radical initiator. The effects of the reaction parameters such as the crosslinking agent concentration, media solvency (controlled by varying the amount of toluene addition), the initiator concentration, and the stabilizer concentration on the particle size and size distribution were investigated with reference particles with a monodisperse size distribution and crosslinked by 1.5 wt % divinylbenzene. The appropriate increase in media solvency was a prerequisite for preparing crosslinked particles without coagulated and/or odd‐shaped particles. The investigation of the effects of the polymerization parameters also shows that only specific sets of conditions produce particles with a monodisperse size distribution. The glass‐transition temperatures of the particles increased with increasing divinylbenzene concentration. © 2002 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 40: 4368–4377, 2002

No abstract

A novel sliding mode harmonic compensation (SMHC) scheme is proposed for the enhanced power quality in distributed generation systems under distorted grid condition. The harmonic pollution caused by non-linear loads in electrical networks brings about distorted grid voltage, power losses and heating in electrical equipments. The proposed SMHC scheme is composed of a harmonic detector and a sliding mode harmonic current controller based on the integral sliding mode control. By using the fourth order band pass filter, the proposed harmonic detector can effectively extract harmonic components without phase delay. These harmonic components can be notably suppressed by adopting the sliding mode harmonic current controller with fast dynamic response. Whereas the conventional sliding mode schemes have been developed to control the entire current value, the proposed SMHC scheme controls only the harmonic components by dividing inverter voltage model into the fundamental and harmonic models. Since the fundamental component in charge of power flow is controlled by proportional-integral controller, the chattering can be quite reduced. The proposed scheme is a non-selective harmonic compensation, which reduces the computational burden than the conventional selective schemes. The validity of the proposed scheme is demonstrated through simulations and experiments using 2 kVA laboratory prototype grid-connected inverter.