The Effect of Recombinant Human Bone Morphogenetic Protein-4 Concentration on Bone Regeneration in Rat Calvarial Defects

( Eun Kyoung Pang ),( Se Ung Im ),( Chang Sung Kim ),( Seong Ho Choi2 ),( Jung Kiu Chai1 ),( Chong Kwan Kim ),( Soo Boo Han ),( Kyoo Sung Cho ) 대한치주과학회 2003 대한치주과학회 학술대회자료집 Vol.2003 No.2

Rheology of Decamethylceclopentasiloxane (cyclomethicone) W/O Emulsion System

Choi, Min-Hyung,Jeong, So-Ra,Nam, Sang-In,Shim, Sang-Eun,Chang, Yoon-Ho The Polymer Society of Korea 2009 Macromolecular Research Vol.17 No.12

A highly dispersed W/O emulsion of silicone oil (cyclomethicone)/water system was prepared with a nonionic surfactant. The surface and interfacial tension between the oil and water were characterized in terms of the droplet size distribution and viscosity change of the emulsion. When the dispersed phase concentration was relatively high, the viscosity of the emulsion was rapidly increased and the droplet size of the emulsion was decreased. The rheological behavior of the emulsion system showed non-Newtonian and shear thinning phenomena depending upon the content of the dispersed phase. The droplet size of the emulsion was decreased with increasing surfactant content and water concentration. The relative viscosity of the emulsion was better predicted with the Choi-Schowalter model than with the Taylor model. The value of the complex modulus increased with increasing surfactant concentration. The linear viscoelastic region was expanded with a dispersed phase concentration. According to the change in the viscosity, the behavior was classified into three distinct regions: [I] linear viscoelastic, [II] partially viscoelastic, and [III] viscous. The creep/recovery behaviors in each region were characterized.

A Multi-Center Educational Research Regarding Breastfeeding for Pediatrics Residents in Korea

Yong Sung Choi,정성훈,김은선,Eun Sun Kim,Eunhee Lee,Euiseok Jung,So-Yeon Lee,이우령,Hye Sun Yoon,Yong Joo Kim,Ji Kyoung Park,Son Moon Shin,Ellen Ai-Rhan Kim 대한신생아학회 2022 Neonatal medicine Vol.29 No.1

Purpose: Pediatricians have a significant responsibility to educate mothers about the importance of breastfeeding. However, there have been minimal efforts in the courses of resident training in Korea. The purpose of this study is to evaluate the change in knowledge and attitude before and after a 4-week breastfeeding educational intervention among multicenter residents. Methods: Prospective interventional educational research was designed for residents at eight training hospitals in Korea. Institutional reviews were obtained in each hospital. The education curriculum consisted of 14 courses regarding breastfeeding theory and practice. These materials were used to teach pediatric residents for 4 weeks. Knowledge-based tests were administered before the course, and re-tests were administered after the course using different test items of similar levels. Test scores and survey responses were compared before and after the intervention. Results: A total of 73 residents (1st year 20, 2nd year 23, 3rd year 16, and 4th year residents 14) from eight training hospitals completed the intervention. Their average age was 30.3±2.9 years, 17 (23.3%) were male, 22 (30.1%) were married, and eight had more than one child of their own. The mean pre-test score was 61.8±13.4 and the mean post-test score was 78.3±7.5 (P<0.001). The inter-grade difference in the score was significant in the pre-test (P=0.005), but not significant in the post-test (P=0.155). There were more responses of obtaining confidence after the intervention (P<0.001). Conclusion: In our study, pediatric residents showed improvement in their knowledge and confidence level after 4 weeks of the breastfeeding curriculum. This will provide a basis for future policymaking in the training of pediatric residents regarding breastfeedReceived: 6 January 2022 Revised: 15 February 2022 Accepted: 15 February 2022 Correspondence to: Ellen Ai-Rhan Kim, MD Department of Pediatrics, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Korea Tel: +82-2-3010-3390 Fax: +82-2-3010-6978 E-mail: arkim@amc.seoul.kr A Multi-Center Educational Research Regarding Breastfeeding for Pediatrics Residents in Korea Yong-Sung Choi, MD,PhD1, Sung-Hoon Chung, MD, PhD2, Eun Sun Kim, MD, PhD3, Eun Hee Lee, MD4, Euiseok Jung, MD5, So Yeon Lee, MD, PhD5, Wooryoung Lee, MD6, Hye Sun Yoon, MD, PhD7, Yong Joo Kim, MD, PhD8, Ji Kyoung Park, MD, PhD9, Son Moon Shin, MD, PhD9, and Ellen Ai-Rhan Kim, MD, PhD5 1Department of Pediatrics, Kyung Hee University Hospital, Seoul, Korea 2Department of Pediatrics, Kyung Hee University Hospital at Gangdong, Seoul, Korea 3Department of Pediatrics, Kangwon National University Hospital, Chuncheon, Korea 4Department of Pediatrics, Korea University Anam Hospital, Seoul, Korea 5Department of Pediatrics, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea 6Department of Pediatrics, Soonchunhyang University Seoul Hospital, Seoul, Korea 7Department of Pediatrics, Nowon Eulji Medical Center, Eulji University, Seoul, Korea 8Department of Pediatrics, Hanyang University Seoul Hospital, Seoul, Korea 9Department of Pediatrics, Inje University Busan Paik Hospital, Busan, Korea Neonatal Med 2022 February;29(1):28-35 https://doi.org/10.5385/nm.2022.29.1.28 pISSN 2287-9412 . eISSN 2287-9803 Copyright(c) 2022 By Korean Society of Neonatology This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http:// creativecommons.org/licenses/by-nc/4.0), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. Original Article 29 Neonatal Med 2022 February;29(1):28-35 https://doi.org/10.5385/nm.2022.29.1.28 ing in Korea.

Skin entrance dose for digital and film radiography in Korean dental schools

Cho, Eun-Sang,Choi, Kun-Ho,Kim, Min-Gyu,Lim, Hoi-Jeong,Yoon, Suk-Ja,,Kang, Byung-Cheol 대한구강악안면방사선학회 2005 Imaging Science in Dentistry Vol.35 No.4

Purpose : This study was aimed to compare skin entrance dose of digital radiography with that of film radiography and to show the dose reduction achievement with digital systems at 11 dental schools in Korea. Materials and Methods : Forty six intraoral radiographic systems in 11 dental schools were included in this study. Digital sensors were used in 33 systems and film was used in 13 systems. Researchers and the volunteer visited 11 dental schools in Korea. Researchers asked the radiologic technician (s) at each school to set the exposure parameters and aiming the x-ray tube for the periapical view of the mandibular molar of the volunteer. The skin entrance doses were measured at the same exposure parameters and distance by the technician for each system with a dosimeter (Multi-O-Meter : Unfors instruments, Billdal, Sweden). Results : The median dose was 491.2 μGy for digital radiography and 1,205.0 μGy for film radiography. The skin entrance dose digital radiography was significantly lower than that of film radiography (p<0.05). Conclusion : Fifty-nine percent skin entrance dose reduction with digital periapical radiography was achieved over the film radiography in Korean dental schools.

곽영은의 작품을 평론한다

곽영은(Young eun-Kwak),최성옥(Sung ok-Choi) 한국콘텐츠학회 2018 한국콘텐츠학회 종합학술대회 논문집 Vol.2018 No.5

간호대학생의 영적안녕에 관한 연구

강은실(Kang Eun-Sil),김숙자(Kim Sook-Ja),강성년(Kang Sung-Nyun),최성은(Choi Sung-Eun) 고신대학교 전인간호과학연구소 2008 전인간호과학학술지 Vol.3 No.-

The purpose of this study was to describe the spiritual well-being of nursing students to provide a basic data for the development the curriculum of Spiritual Nursing Care in nursing collages. The subjects for this study were consist of 58 nursing students in K University of Pusan city in Korea. All of them were educated about Spiritual Nursing Care for 100 minutes in a week, during totally 8 weeks in one semester. The data were collected during 7days from July 11 to July 18,2004 by using structured questionnaire method. The measurement of the spiritual well-being was performed with 6 points-index which is composed of 21 items and is modified by Sang-Soon Choi(1990)from Palau tzian & Ellison(1983) s. Its high score means that the degree of spiritual well-being of the subject is high. The data were analyzed by using the SPSS WIN 10.1 program according to the purpose of this study. The general characteristics of the subjects were analyzed by calculating the real quantity and the percentage, and the spiritual well-being scores were identified through calculating the mean value of individual domain. The significant difference of the general characteristics with the spiritual well-being was analyzed by t-test and ANOVA, Scheffe s test. The results of this study were as follow; 1.The spiritual well-being of the subjects The average value for the spiritual well-being of the subjects was 97.78(SD=±10.53) among the possible ranges of 21-126. The mean value of all items was 4.66(SD=±0.502) and high relatively. 2. The spiritual well-being according to general characteristics of subjects The analysis of the spiritual well-being according to general characteristics of the subjects showed statistically significant difference on the degree of life satisfaction in faith(F=4.327, P= .004),the degree of recognition about God s initiation in their daily life(F=3.933, P= .013),the degree of satisfaction about Nursing as their major(F=6.608, P= .000), their assurance of salvation(t=4.557,P= .037). among the personal religious actions, praising(F=3.32,p= .017), The group of nursing students responded that they were satisfied in their faith life, always God has the initiative in their daily lives personally, they were satisfied about Nursing as their major very much, and they have their assurance of salvation showed the highest degree of the spiritual well-being than any other group. In conclusion, in this study we observed that the spiritual well-being of nursing students was high relatively. The general characteristics of subjects were related to the spiritual well-being of them were the degree of satisfaction in their faith lives,their recognition about God s initiation in their daily life, their satisfaction about Nursing as their major, among the personal religious actions, regular praising and their assurance of salvation. Therefore this study s results can be used for developing a spiritual nursing education and program to strengthen nursing student s spirituality to practice in spiritual nursing care.

장기요양노인병원에서 발생한 보라색 오줌 증후군 또는 Purple Urine Bag Syndrome 16예 보고 및 문헌 리뷰

최규동(Gyu-Dong Choi),가혁(Hyuk Ga),박기호(Ki-Ho Park),유병익(Byung-Ik Yoo),김성민(Sung-Min Kim),강문철(Moon-Chul Kang),이은자(Eun-Jah Lee),박승태(Seung-Tae Park) 대한임상노인의학회 2007 대한임상노인의학회지 Vol.8 No.2

연구배경: 1978년 란셋 잡지에 보라색 소변에 대한 보고가 최초로 있은 이래, 이 현상에 대한 생화학적, 미생물학적, 임상적 규명이 있었다. 보라색 소변은 환자나 환자 가족에게 불편하거나 걱정스러운 질병이다. 그러나 대개의 경우 환자의 건강에 실제적인 위험이 되는 경우는 거의 없다. 심지어 보라색 소변은 열심히 치료할 필요가 없다고 주장하는 사람도 있다. 이에 대조군 연구를 통하여 보라색 소변의 위험요인과 임상적인 의미(심각성)에 대하여 평가를 하고자 한다. 방법: 2007년 2월부터 4월 사이에 인천은혜병원에 입원하고 있는 381명의 환자들 중 도뇨관을 삽입하고 있는 65명을 대상으로 하였다. 이 65명은 65세 이하이거나 1개월 이하동안 도뇨관을 갖고있는 환자는 제외한 숫자이다. 대상 환자는 모두 실리콘제의 폴리카테터와 일회용 소변주머니를 사용하였고 카테터의 교환주기는 특별한 경우 외에는 1개월마다 교환하였다. 대상환자 중 16명이 보라색 소변을 보여, 멸균생리식염수로 방광세척을 한 뒤 카테터와 소변 주머니를 소독된 새 것으로 무균적으로 교환한 뒤 소변배양을 실시하였다. 관련 환자와 대조군의 비교항목들을 통계처리하여 통계적인 유의성을 확인하였으며, 변수의 분석은 신뢰도 95%로(P value 0.05) 카이스퀘어 가설검정과 만-휘트니 U검사를 실시하였다. 결과: 보라색 소변을 보였던 환자들의 나이 평균은 80세였고 전원이 와상상태의 할머니였다. 대상환자의 진단명 중 가장 많은 것은 치매였다. 평균 도뇨기간은 22개월 이었다. 보라색소변을 보인환자군은 보이지 않은 환자들 보다 평균 도뇨기간이 길었으며, 변비가 더 심하였고 변비치료용 좌약 사용빈도가 높았다. 대조군에서는 조사기간 전 1개월 이내에 항생제를 사용한 빈도가 약간 더 높았으나 통계적인 의미는 확실하지 않았다. 결론: 보라색소변은 장기요양노인병원에서 흔히 발생하는 문제이다. 이전 연구들에서 없었던 보라색 소변과 항생제사용과의 관련성 및 변비치료제로 bisacodyl 좌약사용과의 관련성, 소변 카테터의 삽입기간 등에 대한 정보를 추가하여 얻을 수 있었다. Background: Since the first report of purple urine bag syndrome (PUBS) by Barlow and Dickson in 1978, many researchers have tried to reveal the clinical and bacteriological background of this phenomenon. To the best of our knowledge, most of them were case or case series reports and only three were case-control studies which compared the clinical, biochemical, or bacteriological background between patients with and without PUBS. It is certain that PUBS is an uncomfortable or troubling issue for some patients and their families. However, most of the patients who presented with PUBS were, largely, asymptomatic and it is apparent that PUBS is not a disease per se, nor does it appear to represent any real danger to patient's health, and some authors go so far as to even advocate that it is unnecessary to treat PUBS-affected patients aggressively. In this case-control study, we reviewed risk factors and clinical significance of PUBS in geriatric wards. Methods: Of the 381 hospitalized patients in a hospital specialized in the long term care of the elderly handicapped (Incheon Eun-Hye Hospital, Incheon, Korea), 65 patients who featured urinary catheterization during the period from February 2007 and April 2007 were enrolled in this study. Subjects who were younger than 65 or catheterized duration was less than one month were excluded. The same types of silicone Foley balloon catheter and disposable plastic urine bag were used for all patients. Routine Foley catheter change interval was one month. For the 16 patients who exhibits PUBS, bladder irrigation with normal saline and immediate change of urine bag and catheter were performed. And urine culture was done. Variables were statistically analyzed by chi square test or Mann-Whitney's U-test. P values less than 0.05 were considered statistically significant. Results: The PUBS patients mean age was 80, and bed ridden female. Most common diagnosis was dementia. Mean duration of the catheterization was 22 months. The PUBS patients were more constipated than non-PUBS control group and used more bisacodyl suppository. Antibiotics usage within one month before this survey in PUBS group is more frequent than control group with borderline statistical significance. Conclusion: PUBS is frequently occurring problem in long-term care geriatric wards. Causative factors are tryptophan putrefaction (decreased intestinal absorption, motility), alkaline urine, oxygen (air, Foley catheterization). All factors are bacterial infection related. Our results were the same as previous results. Relationship with antibiotics usage, bisacodyl suppository and constipation, long term usage of the Foley catheter notified also. Female predomination is related with easy, frequent urinary infection, and more population in old age.

Construction of Stably Transformed Bm 5 Cells by Using Autographa californica Nuclear Polyhedrosis Virus IE 0 Gene

Cho, Eun Sook,Jin, Byung Rae,Sohn, Hung Dae,Choi, Kwang Ho,Kim, Soung Ryul,Kang, Seok Woo,Yun, Eun Young,Kim, Sang Hyun,Kim, Keun Young,Je, Yeon Ho,Kang, Seok Kwon 한국잠사학회 1998 한국잠사곤충학회지 Vol.40 No.2

To construct transfurmed Bm5 cells, Autographa californica nuclear polyhedrosis virus(AcNPV) IE1 gene, an immediate early viral gene was firstly used in this study. AcNPV IE1 gene, which shares on 95.3% nucleotide sequence homology with Bombyx mori nuclear polyhedrosis virus (BmNPV) IE1 gene, was isolated and cloned into pBluescript. Neomycin gene from pKO-neo was inserted under the control of the IE1 promoter to yield pAcIE1-neo. The plasmid pAcIE1-neo was transfected into Bm5 or Sf9 cells, and neomycin-resistant cells were selected in TC100 medium containing 10% fetal bovine serum (FBS) and 1 mg/ml G4l8 for two weeks. Individual clones were picked and each was amplified for further characterization. The genomic DNA from neomycin-resistant cells was isolated and characterized by PCR using AcNPV IEI gene-specific primers and by Southern blot analysis using neomycin gene probe. We concluded that AcNPV IE1 gene was functional in B. mori-derived Bm5 cells as well as Spodoptera fugjprrda-derived Sf9 cells to produce stably-transformed insect cells

Influence of Thermal Aging on Pyrolysis Pattern of Carbon Black-Filled NR Composite

Sung Seen Choi,Ji Eun Ko 한국고분자학회 2007 Macromolecular Research Vol.15 No.5

A Case of Malignant Fibrous Histiocytoma (Case Reports)

Sung Eun Chang,Il Jung Park,Jee Ho Choi,Kyung Jeh Sung,Kee Chan Moon,Jai Kyoung Koh 대한피부과학회 2000 Annals of Dermatology Vol.12 No.1