The Effect of Surface Engineering on Nanoscale Adhesion and Friction of Nano and Energy Materials

박정영 한국표면공학회 2013 한국표면공학회 학술발표회 초록집 Vol.2013 No.5

난연제의 최근 개발 동향

박정영 한국염색가공학회 2006 염색가공 Vol.1 No.-

Metallic Discoloration on the Right Shin Caused by Titanium Alloy Prostheses in a Patient with Right Total Knee Replacement

박정영,신동훈,최종수,김기홍 대한피부과학회 2013 Annals of Dermatology Vol.25 No.3

The differential diagnosis of bluish-gray pigmentation of the skin includes dermal melanocytosis, malignant melanoma and metallic discoloration. Of these disorders, metallic discoloration, which develops from deposits of fine metallic particles on the skin, is an uncommon dermatologic disease. We report a case of metallic discoloration of the right shin caused by titanium alloy prostheses in a patient with right total knee replacement. The patient had bluish-gray pigmentation on her right shin as well as pain while walking. Histopathologic findings of the skin lesion showed abundant black particles in the perivascular area of the lower dermis. Polarizing microscopy revealed refractile foreign materials in the dermis. An energy dispersive X-ray spectrophotometer unit attached to a transmission electron microscope detected titanium and aluminium peaks in the specimen.

조리종사자의 손 씻기 의식과 실천 및 손의 지표미생물 오염도에 관한 연구

박정영,김중순,김종규,Park, Jeong-Yeong,Kim, Joong-Soon,Kim, Jong-Gyu 한국환경보건학회 2010 한국환경보건학회지 Vol.36 No.2

Hand-washing is one of the major factors in personal hygiene and public health. This study was undertaken to investigate the hygienic behavior of food-service employees, focusing on awareness of hand washing, hand washing practices, and the load of index microorganisms (aerobic plate count, total and fecal coliforms, Escherichia coli, and Staphylococcus aureus) on the hands of food-service employees. A questionnaire survey completed by direct interview, direct observation of restrooms by the researcher and trained observers, and microbiological examination according to the Food Code of Korea were carried out. In the survey, a positive attitude toward hand washing compliance was reported; however, improper hand washing and poor hand hygiene of the food-service employees were seen under direct observation. Significant differences (p<0.05) were found between the questionnaire survey and the direct observations in hand washing compliance after using the toilet, duration of hand washing, use of hand washing agents, use of hand washing tools, washing of different parts of the hands, hand-drying method, temperature of water, and method of turning off the water. Samples taken from employees' hands before washing showed higher levels of bacteria than those taken during work and/or after washing (p<0.05). Poor hand washing practices were indicated by the positive results for total and fecal coliforms, E. coli, and S. aureus on the hands of some food-service employees. This study showed that there is a marked difference between the food-service employees' awareness of hand-washing and their actual hand-washing practices. The poor hand hygiene of and improper hand washing by the food-service employees should be addressed for improved food safety.

패션 샵 서비스의 고객만족에 영향을 미치는 요인에 관한 연구

박정영,이종주 경기대학교 부설 소성종합관광연구소 2002 여가관광연구 Vol.6 No.-

The purpose of this paper is to find the key factors related to satisfaction and dissatisfaction to effect customer satisfaction through CIT(Critical Incident Technique) When customers visit the fashion ship, which helps to improve the fashion shop services to the right way on the actual circumstance. The Critical Incident Technique is applied to find and confirm the key factors that affect customer satisfaction and dissatisfaction in fashion shop. The authors believe that this result helps the fashion shop managers and employees to enhance their service levels by using the key factors as a guidelines

패밀리 레스토랑의 핵심${\cdot}$고품질${\cdot}$기본서비스 요인과 요인 별 고객관리 차별화 전략에 관한 연구

박정영,Park, Jung-Young 한국식생활문화학회 2008 韓國食生活文化學會誌 Vol.23 No.2

The purpose of this study was to determine the detailed customer satisfaction and dissatisfaction factors of family restaurants in Korea, and to then classify the factors into 3 groups, inlcuding core service, quality service, and basic service. ‘Core service’ represents the critical factors that generate both satisfaction and dissatisfaction; ‘quality service’ generates only satisfaction; and ‘basic service’ generates only dissatisfaction. This categorization is based on Herzberg’s motivation-hygiene theory (1976) as well as Cadotte & Turgeon (1988). Based on the characteristics of the three groups, differentiation strategies in managing customer service were suggested to the family restaurant managers. A qualitative research method, termed the critical incident technique (CIT), was used in the study. This method helps researchers find new factors or attributes by grouping key issues from the anecdotes (critical incidents) and then categorizing common factors from the key issues. This research categorized key satisfiers and dissatisfiers into 33 factors, which were from 402 critical incidents described by 261 respondents. Eleven factors (response to service failures, food taste and quality, attention paid to customers, coupon/mileage point/discount card, customer’s ordinary requests, waiting, food diversity, food price, facility sanitation, checking out, customer’s special requests) were classified into core service, which required maximum management not regarding the level of customer satisfaction. Six factors (employee attitude, event, education and explanation, complementary food, customer’s mistakes, attention paid to children) were classified into quality service, which required differentiation strategy management. Finally, nine factors (speed of food service, employee’s mistakes, food sanitation, atmosphere and interior, seating, forcing orders, parking, other customers, reservations) were classified into basic service, which required minimum management at the level of the industry standards.

한국산 마늘에 의한 Aspergillus parasiticus의 성장 억제 효과

박정영,김종규,Park, Jeong-Yeong,Kim, Jong-Gyu 한국환경보건학회 2009 한국환경보건학회지 Vol.35 No.2

This study was performed to investigate the possible effect of garlic produced in Korea on the inhibition/reduction of growth of A. parasiticus, a toxigenic strain. The effect was studied using different concentrations of freeze-dried garlic in potato-dextrose agar (PDA) and/or in yeast-extract sucrose (YES) broth at $25^{\circ}C$ for 15 days. While inhibition of the fungal growth due to increasing the concentration of garlic was observed, the more remarkable effect was observed on the ninth day. Reduction of fungal diameter as a result of addition of garlic on PDA was observed to range between 3.4% to 20.1 % while reduction of mycelial weight in YES broth ranged from 9.9% to 30.5%. The 0.5% and 1.0% concentrations of garlic significantly reduced fungal diameter in PDA on the 9th day, while 0.1 %, 0.5%, and 1.0% concentrations of garlic significantly reduced the mycelial weight in YES broth (p<0.05). Dose-response relationships were observed between the concentration of garlic and inhibition of growth both in solid culture and in liquid culture. This study indicates that garlic could be an effective inhibitor at a human consumption level of the growth of A. parasiticus. More research is needed to study the inhibitory effects of the main active component of garlic.

경동맥 협착증에 대한 외번 내막절제술의 결과

박정영,권우형,서보양 대한혈관외과학회 2012 Vascular Specialist International Vol.28 No.1

Purpose: Potential benefits of eversion carotid endarterectomy (eCEA) compared with conventional carotid enderterectomy (cCEA) are more simple and faster reanastomosis with a low risk of restenosis. However, in Korea, eCEA is not popular having only one report of eCEA. This study aimed to investigate the results of eCEA. Methods: From July 2008 to September 2010, authors performed 36 eCEAs for patients with carotid artery stenosis in our hospital. Patients' demographics and clinical data were retrospectively reviewed. Regarding early (<30 days) results including the frequency of postoperative stroke, myocardial infarction, cerebral hyperperfusion syndrome, bleeding, cranial nerve palsy, new brain lesions (NBLs) on diffuse-weighted MRI (DW-MRI) and mortality were examined. Mid-term results such as stroke, death and restenosis after over thirty days were also examined. Results: Mean age was 66.6 years old and 88.9% of the patients were male. Twenty-four patients (66.7%) had a previous neurological event in the preceding 6 months. A carotid shunt was used in 3 cases (8.3%) and mean carotid clamping time was 25.4 minutes. One case (2.8%) of non-disabling ipsilateral stroke, 1 case (2.8%) of wound hematoma and 1 case (2.8%) of cranial nerve palsy developed after operation. DW-MRI was conducted in 27 patients (75.0%) and NBLs were detected in 4 patients (11.1%). One case (2.8%) of restenosis was discovered during the follow-up period (mean, 9.0 months), and there were no strokes or death. Conclusion: Early and mid-term postoperative stroke and complication rates of eCEA were acceptable in our series. However, to assess efficacy of eCEA, further large-volumed and long-term follow-up studies are needed.

Fabrication and Characterization of Microcolumn Array Aligned by Field Emission Array ( FEA )

박정영,Jared D. Lera,이용재,전국진,이종덕,M. Yakshin,최성수,국양 대한전자공학회 1998 대한전자공학회 학술대회 Vol.1998 No.1

동래단층 북부지역 양산층의 단열 특성

박정영,임명혁 대한지질공학회 2017 대한지질공학회 학술발표회논문집 Vol.2017 No.2