Fabrication and Characterization of AlO-Siloxane Composite Thermal Pads for Thermal Interface Materials.

In this study, AlO-siloxane composite thermal pads were fabricated using a tape-casting technique, and the thermal conductivity effect of the AlO nanoparticle powder synthesized using a flame fusion process on siloxane composite thermal pads was investigated. Furthermore, various case studies were implemented, wherein the synthesized AlO nanoparticle powder was subjected to different surface treatments, including dehydration, decarbonization, and silylation, to obtain AlO-siloxane composite thermal pads with high thermal conductivity. The experimental results confirmed that the thermal conductivity of the AlO-siloxane composite pads improved when fabricated using surface-treated AlO nanoparticle powder synthesized with an optimally spheroidized crystal structure compared to that produced using non-treated AlO nanoparticle powder.

Associations of Metabolic Syndrome with Total Testosterone and Homocysteine Levels in Male Korean Workers.

Background: Low testosterone is associated with metabolic syndrome (MetS), and homocysteine (Hcy) is elevated in individuals with MetS. We investigated the relationships of total testosterone (TT) and serum Hcy levels with MetS in male Korean workers.

Methods: We conducted a cross-sectional study including 8,606 male workers, aged 20 to 58 years, who underwent a physical examination in 2015.

Discoid Medial Meniscus Tear, with a Literature Review of Treatments.

The present study reports our experience of treating four cases of symptomatic discoid medial meniscus, three of which were bilateral. We performed partial meniscectomy with a four-portal technique using a knife leaving a 6 mm peripheral margin after confirmation of magnetic resonance imaging findings. Clinical results were assessed at the end of 2-year follow-up using the Knee Injury and Osteoarthritis Outcome Score and a visual analogue scale.

Decreases in Smoking-Related Cancer Mortality Rates Are Associated with Birth Cohort Effects in Korean Men.

This study aimed to examine trends in smoking-related cancer mortality rates and to investigate the effect birth cohort on smoking-related cancer mortality in Korean men. The number of smoking-related cancer deaths and corresponding population numbers were obtained from Statistics Korea for the period 1984-2013. Joinpoint regression analysis was used to detect changes in trends in age-standardized mortality rates.

Trends and Age-Period-Cohort Effects on the Incidence and Mortality Rate of Cervical Cancer in Korea.

Purpose: This study was conducted to describe the trends and age-period-cohort effects on the incidence and mortality rate of cervical cancer in Korea.

Materials And Methods: The incidence and mortality rate of cervical cancer among ≥ 20-year-old women from 1993 to 2012 were obtained from the Korea Central Cancer Registry and the Korean Statistical Information Service. Age-standardized rates were calculated and Joinpoint regression was used to evaluate the trends in the incidence and mortality rate.

Prediction of Cancer Incidence and Mortality in Korea, 2016.

Purpose: To estimate of Korea's current cancer burden, this study aimed to report on projected cancer incidence and mortality rates for the year 2016.

Materials And Methods: Cancer incidence data from 1999 to 2013 were obtained from the Korea National Cancer Incidence Database, and cancer mortality data from 1993 to 2014 were acquired from Statistics Korea. Cancer incidence in 2016 was projected by fitting a linear regression model to observed age-specific cancer incidence rates against observed years, then multiplying the projected age-specific rates by the age-specific population.

Cancer Statistics in Korea: Incidence, Mortality, Survival, and Prevalence in 2013.

Purpose: This study described the 2013 nationwide cancer statistics in Korea, including cancer incidence, survival, prevalence, and mortality.

Materials And Methods: Cancer incidence data from 1999-2013 were obtained from Korea National Cancer Incidence Database and followed until December 31, 2014. Mortality data from 1983-2013 were obtained from Statistics Korea.

Serum uric acid level and the incidence of metabolic syndrome in middle-aged Korean men: a 5-year follow-up study.

Objectives: Elevated serum uric acid (UA) has been known to be associated with the prevalence of metabolic syndrome (MetS). However, no prospective studies have examined whether serum UA levels are actually associated with the development of MetS. We performed a prospective study to evaluate the longitudinal effects of baseline serum UA levels on the development of MetS.

Blood cadmium levels are associated with a decline in lung function in males.

Background: Cadmium exposure was found to cause a decline in lung function among the general population, but these findings were limited to smokers and gender differences were not explored.

Objectives: To examine the relationship between cadmium and chronic obstructive pulmonary disease (COPD) according to gender and smoking status in Korea.

Methods: Cross-sectional data from the Korean National Health and Nutrition Examination Survey from 2008 to 2011 were analyzed.

Modified rheokinetic technique to enhance the understanding of microcapsule-based self-healing polymers.

A modified rheokinetic technique was developed to monitor the polymerization of healing monomers in a microcapsule-based, self-healing mimicking environment. Using this modified technique, monomers active toward ring-opening metathesis polymerization (ROMP) were either identified or disregarded as candidates for incorporation in self-healing polymers. The effect of initiator loading on the quality and speed of healing was also studied.

Change of properties during storage of a UDMA/TEGDMA dental resin.

The aim of this study was to evaluate the changes in viscoelastic properties of a UDMA-based dental resin as a function of time after initial light exposure. Specimens of a UDMA/TEGDMA (70:30 wt%) resin were irradiated by a visible-light-curing unit. Immediately after the irradiation, the light-cured specimen was stored in the dark for different times from 1 to 120 h at 37 degrees C, and characterized by means of DMA, DSC, and FTIR spectroscopy.

Synthesis of chitooligosaccharide derivative with quaternary ammonium group and its antimicrobial activity against Streptococcus mutans.

A derivative of chitooligosaccharide (COS) with quaternary ammonium functionality was synthesized and characterized by means of FT-IR and NMR spectroscopy. Its amtimicrobial activity was evaluated against Streptococcus mutans, which is a principal etiological agent of dental caries in humans. Introduction of quaternary ammonium group to COS has been easily accomplished by coupling of glycidyl trimethylammonium chloride (GTMAC) to COS in aqueous solution without an additional catalyst.