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Jecheon, South Korea

Choi J.S.,Gachon University | Kim K.M.,Semyung University
American Journal of Infection Control

Background This study investigated the self-perceived infection control (IC) knowledge and practice levels of professional standards competency (PSC) among Korean infection control nurses (ICNs) to identify factors that may influence PSC. Methods Using a self-reporting questionnaire method, we collected data from a total of 104 ICNs. Results The average self-perceived IC knowledge level was 3.1 ± 0.8, with hand hygiene scoring the highest at 3.7 ± 0.8. The total proportion of responders who did not meet the expected standard in 4 future-oriented domains was 51.7%. Of the 4 domains, technology had the highest number of respondents meeting the desired standard (57%). There were significant differences in self-perceived levels of PSC in relation to ICN specialist certification and continuing education (eg, extra coursework, conference attendance) in the field. Self-perceived practice levels of PSC also were significantly correlated with age, years of total clinical experience, years of ICN experience, hospital bed count, and IC knowledge. Predictors of self-perceived practice levels of PSC were knowledge and years of ICN experience. Conclusion Educational programs are needed to promote knowledge and competency, the lack of which was recognized by the ICNs. Also, various efforts are needed to prevent turnover of ICNs with a high level of competency. © 2014 by the Association for Professionals in Infection Control and Epidemiology, Inc. Source

The aim of this study was to provide accurate anatomical descriptions of the overall anatomy of the superior thyroid artery (STA), its relationship to other structures, and its driving patterns. Detailed dissection was performed on thirty specimens of adult's cadaveric neck specimens and each dissected specimen was carefully measured the following patterns and distances using digital and ruler. The superior thyroid, lingual, and facial arteries arise independently from the external carotid artery (ECA), but can also arise together, as the thyrolingual or linguofacial trunk. We observed that 83.3% of STAs arose independently from the major artery, while 16.7% of the cases arose from thyrolingual or linguofacial trunk. We also measured the distance of STA from its major artery. The origin of the STA from the ECA was 0.9±0.4 mm below the hyoid bone. The STA was 4.4±0.5 mm distal to the midline at the level of the laryngeal prominence and 3.1±0.6 mm distal to the midline at the level of the inferior border of thyroid cartilage. The distance between STA and the midline was similar at the level of the hyoid bone and the thyroid cartilage. Also, when the STA is near the inferior border of the thyroid cartilage, it travels at a steep angle to the midline. This latter point may be particularly important in thyroidectomies. We hope that anatomical information provided here will enhance the success of, and minimize complications in, surgeries that involve STA. © 2016. Anatomy & Cell Biology. Source

Jung J.-S.,Semyung University
International Journal of Bio-Science and Bio-Technology

Volatile components in the root peels, stem peels, and fruit peels of pomegranate (Punica granatum) were analyzed by thermal desorption gas chromatography/mass spectrometry (TD GC/MS). Twenty-four compounds including 17 hydrocarbons, 1 aldehyde, 1 ketone, 2 heterocyclics, and 3 others were identified in the root peels. Thirty compounds including 5 hydrocarbons, 8 alcohols, 3 aldehydes, 2 ketones, 11 esters, and 1 other were identified in the stem peels. Sixty-two compounds including 10 hydrocarbons, 18 alcohols, 6 aldehydes, 4 ketones, 1 carboxylic acid, 17 esters, 1 heterocyclic, and 5 others were identified in the fruit peels. Monoterpene hydrocarbons such as α-pinene (13.49%), 2-β-pinene (16.31%), δ-3-carene (22.94%), and dl-limonene (17.33%) were found to be the major volatile compounds in the root peels. The main volatile compound in the stem peels and fruit peels was ethanol of alcohol, which represented 40.76% and 42.12% of the total concentration of volatiles, respectively. Other compounds dominating the stem peels and fruit peels were all acetic acids and ethyl ester of ester, which represented 21.29% and 19.59% of the total concentration of volatiles, respectively. © 2014 SERSC. Source

Park S.,Semyung University | Shin W.-S.,Hanyang University
Physiology and Behavior

This study aimed to determine whether there might be differences in masticatory performance and eating behaviors by gender and obesity status. Forty eight (24 males; 24 females) non-obese and pre-obese young adults were matched for age, gender, and dental health. Eating behaviors were assessed using the Three-Factor Eating Questionnaire (TFEQ), and chewing performance while eating 152. g of boiled rice was measured using electromyography (EMG). Compared with non-obese participants, pre-obese participants had significantly higher levels of disinhibition according to the TFEQ (P < 0.05 for males; P. < 0.01 for females). Microstructures of chewing performance were significantly different by gender but not by obesity status. Males had a greater bite size (P < 0.05), greater chewing power (P < 0.001) and a faster eating rate (P < 0.05) than females. Females habitually chewed more (P < 0.05) and had a longer meal duration (P < 0.01) than males. Eating rate was positively associated with disinhibition (r=0.490, P. < 0.05) score in males. Bite size (r=- 0.449, P. < 0.05 for non-obese) and chewing power (r=- 0.581, P. < 0.01 for non-obese and r=- 0.446, P. < 0.05 for pre-obese) were negatively associated with disinhibition score. Results suggest that the effects of gender and, in part, obesity on eating responses may be explained as chewing performance. Therefore, gender-specific interventions and counseling aimed at slowing the rate of ingestion could be promising behavioral treatments for obese persons. © 2014 Elsevier Inc. Source

The alkaline niobate-based perovskite ceramics (Li,Na,K)(Nb,Ta,Sb)O 3 has been regarded as a new candidate of lead-free piezoelectric materials due to its excellent piezoelectric properties. In this study, Li 0.02(Na0.55K0.45)0.98(Nb 0.77Ta 0.18 Sb0.05)O3 (abbreviated as LNKNTS) piezoelectric ceramics were fabricated by a conventional solidstate reaction method at various calcinations temperature and then, their dielectric and piezoelectric properties were investigated. At the calcinations temperature of 870°C and sintering temperature of 1140°C, the optimum values of density = 4.736g/cm3, kp = 0.423, Qm = 65, εr = 1545 and d33 = 256 pC/N, were obtained, respectively. Taking into consideration above physical properties, it is considered that this composition is applicable to lead-free haptic piezoelectric actuators. Copyright © Taylor & Francis Group, LLC. Source

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