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.

Shield Disk 상의 Ag-Cu 공정계 합금 도금기술 개발

윤경도,차동관,심기종,민봉기,최순돈,이상기 嶺南大學校 工業技術硏究所 2003 工業技術硏究所論文集 Vol.31 No.1

The composition and the microstructure of the Ag-Cu alloy electrodeposits electroplated in Succinimide bath were investigated varying the electrolysis conditions such as bath composition, current density and additive agents etc. The cathode overpotential increased with the increase of Succinimide concentration and current density ratio in the bath. The Ag content of the alloy deposits decreased with the increase of current density and pH and temperature in the bath. The optimum condition for 78wt.%Ag-22wt.%Cu code position alloy is an follows : pH10(adjusted by NH_4OH), 0.03M AgNO_3, 0.27M Cu(NO_3)_2 3H_2O, 0.5M Succinimide in bath and 3.5A/dm^2∼5.5A/dm^2 current density.

제2형 당뇨병 환자에서 QUICKI법을 이용하여 측정한 인슐린 저항성과 비만도와의 관계

성윤경,최웅환,이창범,박용수 대한비만학회 2003 The Korean journal of obesity Vol.12 No.3

연구배경: 인슐린 저항성은 제2형 당뇨병의 중요한 병인으로서 비만과 밀접한 관계가 있으며, 이와 연관된 고지혈증. 고혈압의 발생은 결과적으로 혈관 합병증의 빈도를 높이는 것으로 알려져 있다. 본 연구에서는 한국인 제2형 당뇨병 환자를 대상으로 하여 새로운 인슐린 저항성 평가법인 QUICKI법을 이용하여 인슐린 저항성을 측정하고, 이와 비만도 및 체지방 분포, 지질 등의 대사성 인자들과의 상관 관계를 평가하고자 하였다. 방법: 연구 대상은 2000년 5월부터 2002년 10월까지 한양대학병원 내분비대사내과에서 당뇨병으로 치료 받은 환자 중 인슐린과 경구혈당 강하차를 투여하지 않은 103명을 차상으로 하였으며, 인슐린 저항성은 공복시 측정한 인슬린치와 포도당치를 이용하여 계산하는 QUICKI법을 이용하였다. 비만도는 입원시 키와 몸무게를 통하여 체질량지수를 측정하였으며, 체지방의 정량화와 분포를 알아보기 위하여QDR4500의 DEXA system (Hlologic, USA)을 이용하여 지방량과 건체중. 총 체지방률, 복부 지방률 등을 측정하였다. 측정 결과는 평균, 표준편차, 백분율 등으로 제시하였고 남녀간평균값의 비교 분석은 independent t-test를 시행하였다. 인슐린 저항성과 각 변수들과의 상관 관차는Pearson 상관 차수를 통해 비교하였고, 단계별 다중회귀분석을 통하여 인슐린 저항성에 가장 영향을 미치는 인자를 평가하였다. 이상의 모든 통계 분석은 SPSS (version 11.0)를 사용하였으며, 통계학적 유의 수준은 p값을 0.05 이하로 하였다. 결과: (1) 평균 연령은 55.7±12.8세, HbA_(IC)는 9.9±2.7%로 측정되었고, 체질량지수는 23.8±3.7kg/㎡', QUICKI값은 0.38±0.07로 계산되었다. (2) 남녀간에 체질량지수. EHA_(IC), 연령 등에서는 유의한 차이가 없었던 반면 QUICKI값. 총 체지방량 및 복부 지방량. 총 체지방률과 복부 지방률, 그리고 각각의 지질치에 있어서 유의한 차이가 있었다. (3) QUICKl법으로 측정된 인슐린 저항성은 HDL 콜레스테롤과 양호한 양의 상관 관계(r=0.456, p<0.01)를 보인 반면, 체질량지수(r=0.407, p<0.001), 총 체지방량(r=0.458, p<0.001), 복부 지방량((r=0.475, p<0.001), 총 체지방률(r=0.438, p<.0.01), 복부 지방률(r=0.457, p<0.01) 그리고 건체중과 대비한 총 체지방량(r=0.392, p<0.01)과 복부 지방량(r=0.423, p<0.01)과도 양호한 음의 상관 관계를 보였으며, 총 콜레스테롤(r=0.281, p<0.01), TG (r=0.333, p<0.01), LBL 콜레스테롤(r=0.326, p<0.01)과도 음의 상관 관계를 보였다. 그러나 수축기 및 이완기 혈압, HbA_(IC)와는 유의한 상판 관차를 보이지 않았다. 한편, 이러한 대사성 인자들과 QUICKI값과의 상관 관계의 정도는 HOMA_(IR)값과의 상관 관계에 비해 약간 높은 것으로 나타났다 (4) 단계별 다중회귀분석을 통하여 인슐린 저항성에 가장 영향을 미치는 인자를 분석한 결과 복부 지방률(R²=0.209, p<0.001), HDL 콜레스테롤(R²=0.135, p<0.001), 총 콜레스테롤 (R²=0.056, p<0.01) 등의 기여율이 가장 높은 것으로 나타났다. 결론: 한국인 제2형 당뇨병 환자의 인슐린 저항성을 QUICKI법을 이용하여 측정하였으며, 단순한 체질량지수나 전체 및 복부의 절대적인 지방량 보다는 복부를 구성하는 체성분중 지방이 차지하는 비율인 복부 지방률과 혈중HDL 콜레스테롤 및 총 콜레스테롤 수치가 인슐린 저항성을 가장 잘 설명하는 것으로 나타났다 따라서 이러한 인자들에 대한 개선 노력은 인슐린 저항성의 개선 및 제2형 당뇨병 발현의 억제에 기여할 것으로 판단된다. Background : Insulin resistance plays an important role in the pathophysiology of diabetes and is associated with obesity and cardiovascular disease. The aim of this study was to investigate the relationships between insulin resistance generated by quantitative insulin sensitivity check index(QUICKI) and regional adiposity, body mass index (BMI), and serum lipid profile in Korean type 2 diabetic patients. Method: Study subjects included fat mass and lean body mass by dual energy x-ray absorptiometry(DEXA) system. Insulin resistance was estimated by the QUICKI. Result :50 were women and 53 were men, with a mean (±SD) age of 54.2 years(±12.8). The mean(±SD) score of QUICKI was 0.38(±0.07). Insulin resistance was positively correlated with total body fat percent, abdominal fat percent, BMI, total cholesterol, LDL-cholesterol, and triglyceride, and negatively correlated with the HDL-cholesterol. In multivariate model, the predicting variables on insulin resistance were abdominal fat percent, HDL cholesterol, and total cholesterol. Conclusion: In this study, we observed that the abdominal fat percent, HDL cholesterol and total cholesterol were meaningful variables correlated with insulin resistance among variables. Therefore, to improve insulin sensitivity in Korean type 2 diabetic patients, we should reduce the abdominal fat percent and total cholesterol and increase the level of HDL-cholesterol.

有機農業의 實態와 發展에 관한 事例 硏究 : 忠南 洪城郡 洪東面 有機農家를 中心으로

尹英相,洪性贊,金成敏,具漢謨,申東一,金昌護,姜熙慶 公州大學校 資源科學硏究所 1997 資源科學硏究論文集 Vol.5 No.-

This study was carried out to improve the organic farming system about crop cultivation, compost production and application, plant diseases & pest control, weed control and marketing system of organic farming products to the case study in Chungnam Hongdong area. Agricultural technologies concerning pest & diseases control, weed control and compost production are not established due to lacks of systemized researches by the agricultural scientist, and agricultural machines profitable to this works had not developed yet. In cropping system, reasonable crop rotation had not conducted. The related cultivation of vegetables on the same ground for a long time cause a various plant disease easily. So crop rotation is a reasonable method about soil nutrient utility and soil disease control. It is a good method that introduce the barley and wheat in this field crop system. Those crop have a long root, so can use the other nutrient against the vegetable. In organic farming products, the safety and quality of products by the National Agricultural Products Inspection Center had not inspected except rice, lettus and apple. Inspection is needed for the development of organic farming and mutual confidence between producer and consumer, because the mutual confidence is a major thing to sustain the organic farming. In products marketing, it is more need for the information of organic farming products. Nowaday most products are marketed in Seoul region, but it is not a good method. To search the consumer in near region is a good method for decrease the cost of conveyance and maintain the quality of products. The varieties of distribution structure of organic farming products are required. The products are sold to department store in large city and the prices are about 30% higher than normal products. But when those are supplied in near region, the prices of those are similar to normal products. Direct transactions in near regions is a good method for decrease the cost of conveyance and strength the mutual confidence between producer and consumer.

특발성 자발성 신장 파열 1예

윤재철,김원,조규종,홍정석,이미우,장성은,오세현,임경수 대한응급의학회 2001 대한응급의학회지 Vol.12 No.4

Primary aldosteronism is a syndrome characterized by hypertension, hypokalemia, suppressed plasma renin activity, and elevated serum aldosterone levels. Conn first described it 1955 in association with adrenal cortical adenoma(Conn's syndrome). Today, it can be divided into at least six distinctive sub-groups. The diagnosis of primary aldosteronism is usually suspected when the patient presents with poorly controlled hypertension with hypokalemia. The main issues in the evaluation of primary aldosteronism are to differentiate an adenoma from hyperplasia and to localize the adenoma. Basic hormonal studies and computed tomographic(CT) scanning can be used effectively for that differentiation. An adenoma is one of a few potentially curable forms of hypertension, and it is best treated by removing the adrenal tumor. We experienced a case of a typical adrenal adenoma. The patient was a 37-year-old male who had experienced in both his legs over a period of several days a weakness due to hypokalemia. He was diagnosed using basic hormonal studies and adrenal CT scanning. After, he received laparoscopic adrenalectomy and was discharged with improved condition.

열가소성 Wood-Plastic Composites의 기계적 물성에 미치는 커플링제의 영향

윤태호,신경섭,황택성,이존태 공주대학교 자원재활용 신소재 연구센터 1999 1차년도 센터 성과집 Vol.1999 No.-

목분 충진제의 함량을 달리 하고 PE수지를 매티릭스로 하여 wood plastic composites(WPC)를 제조하였다. 또한 매트릭스와 충진제간의 계면결합력을 증가시키기 위하여 커플링제로 phthalic anhydride(PA)를 사용하였으며, 충진제의 충진률과 커플링제 처리가 복합재의 기계적 물성에 미치는 영향과 계면현상을 관찰하였다. 목분의 충진률 30wt%, PA커플링제농도 3wt%일 때 인장강도는 26.37MPa로 최대값을 나타내었으며, 이때 충격강도는 46.24J/m의 최대값을 나타냈다. 또한 WPC는 주사전자현미경 관찰을 통해서 커플링제의 처리농도의 증가에 따라 목분과 PE 수지와의 분산과 결합이 잘 이루어졌으을 확인할 수 있었다. Wood powder as reinforcing fillers and polyethylene as a matrix have been used for wood plastic composites(WPC). In preparing WPC, the coupling agent, phthalic anhy dride(PA) was used in order to increase the interfacial bonding force between matrix and fillers. In this study, the effect of wood powder, PA concentration on the mechanical properties and interfcial phenomena on the composites was eveluated. The tensile strength of 3wt% PA-treated composites reached its maximum value of 25.91 MPa when the wood powder content was 30wt%, and the mximum impact strength of PA-treated composites was 46.24H/m. SEM observation showed that wood powder was well dispersed and bonded well with PE matrix by increasing the coupling agent concentration.

STI571 (Glivec^(�))에 의하여 빠른 치료 반응을 보인 불응성 Gastrointestinal stromal tumor

윤경원,이제중,김여경,황호인,이병환,조상희,정익주,김형준 全南大醫大 2001 전남의대학술지 Vol.37 No.4

음낭외상시 고환파열에 대한 초음파 검사의 진단적 유용성

김경영,한동준,신대은,노준,문형윤,임동훈,김철성,박성운 朝鮮大學校 附設 醫學硏究所 2007 The Medical Journal of Chosun University Vol.32 No.3

Purpose: We determined the use of scrotal ultrasonography in the initial diagnosis and management of testicular injuries due to blunt scrotal trauma. Mateiials and Methods: We reviewed 54 patients of scrotal trauma in the last 8 years. Forty patients were evaluated by ultrasonography preoperatively. A heterogeneous echo pattern of the testicular parenchyma with loss of oval shape, contour definition was the basis for diagnosis of testicular rupture. Among them, 33 cases underwent scrotal exploration and 7 cases were managed conservatively. The remaining 14 patients were evaluated only by physical examination, 8 patients of them were explored immediately because of suspicious testicular mpture. The accuracy of ultrasonography were determined by comparing radiographic interpretations with intraoperative findings. Results: Among the 33 patients who were evaluated by ultrasonography and explored immediately, there were 26 suspected testicular ruptures on ultrasonography. Surgical exploration revealed testicular rupture in 23 and simple hematoma in 10. The testicular rupture was correctly diagnosed by ultrasonography in the 22 cases, and there were 4 false-positive and 1 false-negative diagnoses of testicular rupture. The sensivity and specificity for the diagnosis of testicular rupture are 96% and 60%, and the positive and negative predictive values are 85% and 86%, respectively, Conclusions: Scrotal ultrasonography, with the main radiographic finding of a heterogeneous echo pattern of the testicular parenchyma with loss of oval shape, contour definition, is highly sensitive on the diagnosis of testicular rupture. And it increases the salvage rate for testicular rupture with preservation of the testicular function and prevents delayed complications of chronic pain, atrophy and orchiectomy associated with missed testicular rupture.

親環境農業을 위한 有機農業의 作付體系 確立에 관한 硏究

홍성찬,강희경,윤영상 공주대학교 자원과학연구소 2000 資源科學硏究論文集 Vol.8 No.-

This study was carried out to produce safe agricultural product and to improve the soil environment of crop cultivation using the reasonable cropping system in organic farming to the case study of organic farmhouse in Chungnam Hongdong area for sustainable agriculture. In the ratio of farming forms in these organic farmhouses, paddy field-upland field-greenhouse form, paddy field-upland field form, crop-livestock form and only greenhouse form were 23.8%, 23.8%, 23.8% and 19.0% respectively. In the greenhouse area of organic farmhouse, the 50% of total greenhouse number were 600~1,000 pyung(200~330a) and the 40% of total were 1,000~1,500 pyung(330~500a). In the area of upland field, the 80% of total upland field number were 500~1,000 pyung(167~330a). In the cropping systems of surveyed farmhouses, the number of crop-combination patterns were twenty-seven and the 96.3% of those was combined with vegetable. Vegetable-vegetable pattern, cereal crops-vegetable pattern and root and tuber crop-vegetable pattern were 44.4%, 18.5% and 14.8% respectively. Leguminous crop combined pattern was 7.4%, but patterns combined with barley or wheat did not exist. Among the vegetable combined patterns, leaf vegetables combined pattern, fruit vegetables combined pattern and root vegetables combined pattern were 66.7%, 31.0% and 22.2% respectively. Among the vegetable-vegetable patterns, the portion of fruit vegetables-leaf vegetables pattern was the highest and that of root and tuber vegetables-root and tuber vegetables pattern was the lowest. Among the twenty-seven crop-combination patterns, unreasonable crop rotation pattern was 50% over and especially the almost crop-combination pattern of greenhouse was unreasonable to crop rotation pattern. The farmhouse that control the amount of compost application by means of periodical soil analysis did not exist in this area.

조밀한 다이아몬드 막의 성장

박상현,박재윤,구효근,김경환 경남대학교 신소재연구소 1999 論文集 Vol.11 No.-

RF-MW 혼합프로세스를 사용하여 다이아몬드 막을 만들 때, 우선 RF 플라즈마CVD법으로 실리콘 기판 위에 다이아몬드 시드를 증착시키고, 그 시드로부터 MW 플라즈마CVD법에 의해 다이아몬드 막을 성장시켰다. RF-MW 혼합프로세스를 사용하여 성장된 다이아몬드 막은 MW 프로세스만으로 성장된 막에 비해 결정입계의 크기는 작고, 조밀해졌으며, 결정성 또한 더 좋아졌다. 성장된 다이아몬드 막은 전자현미경, X-선 회절기, Raman분광기 등으로 분석하였다. In case of making the diamond films by using RF-MW mix-process, at first. diamond seeds were deposited on silicon substrate by RF plasma CVD, and then diamond layer grown by MW plasma CVD from the seeds. The grain-size of diamond films deposited by using RF-MW mix-process was smaller and denser, in addition, crystallity of diamond films was better than MW plasma CVD process. The deposited diamond films were analyzed by SEM, XRD, and Raman spectroscopy.