복강경 충수절제술에서 개복술 전환의 위험인자

윤형식,백용해,최원용,곽범석,김연대,박영진,오민구,김홍용 대한내시경복강경외과학회 2010 Journal of Minimally Invasive Surgery Vol.13 No.2

Purpose: Laparoscopic appendectomy has recently been performed more frequently than open appendectomy because of its advantages. Yet laparoscopic appendectomy has the risk of converting to open appendectomy. We evaluated the preoperative evaluation factors that can influence the rate of conversion to open appendectomy. Methods: For the 255 patients admitted to our hospital, we reviewed their medical history, their clinical and laboratory examination etc. and the final diagnosis was made by CT scan. The preoperative characteristics of the patients who underwent laparoscopic appendectomy and the patients who were converted to open appendectomy were compared using univariate and multivariate analysis. Results: Out of 255 patients who underwent laparoscopicappendectomy,15 patients (5.8%) were converted to open appendectomy. The main reasons were adhesion and periappendiceal abscess formation. Periappendiceal fat infiltration (p=0.030) seen in the CT scan and perforation (p=0.019) were significant risk factors associated with converting to open appendectomy. Conclusion: Periappendiceal fat infiltration and perforation seen on preoperative CT scanning are important when considering performing laparoscopic appendectomy. Identifying the potential preoperative factors for conversion may assist surgeons when making decisions concerning the management of patients with appendicitis and for the judicious use of LA.

動物의 部位에 따르는 水溶性遊離 Amino酸의 分布에 對한 硏究(第三報) : 韓國産 在來種 山羊의 骨에 對하여 on bone of Korean Goats

尹衡植,毛麒喆,朴元吉 慶北大學校 1963 論文集 Vol.7 No.2

The authors carried out the studies on the distribution of water soluble free amino acid in bones and marrow of korean native goat, by using paper chromatography method. The results obtained may be summarized as follows: 1. Amino acid detected in common in both marrow and bones are Arginine and Glutamic acid. 2. Varieties of amino acid are more in the bones than in the marrow. 3. The reis no considerable difference in varieties of amino acid between bone and catrilage, but generally more in bones than in cartilage. 4. In the vertebrae thoracale more varieties and amounts of amino acid are estimated in comparison with other bones. 5. In the medulla osseum less varieties of amino acid is detected compared with bones: Arginine and Glutamic acid are negrigible.

한국의 코칭학 발전방향에 관한 탐색적 연구

윤형식,도미향 한국코칭학회 2016 코칭연구 Vol.9 No.1

This study aimed to seek the direction for the development of the coaching science in Korea. In order to achieve this objective, the research trends on coaching, reported from 1995 to 2015, were analyzed. This study also reviewed and analyzed the activities of academic associations to support the theoretical basis of coaching science and to examine current tendency and the future of the coaching industry. In conclusion of these analyses, we have identified three directions for the sustainable development of coaching science. First, coaching science should respond more actively to escalating social needs for coaching. It is expected to be further developed through this social role. Second, it is very necessary to expand collaborative research between the industries and universities beyond what it is now, especially in terms of the objective verification of coaching effect, building a process for each type of coaching that is more fragmented by market segmentation, and increasing the expertise of coaches. Third, coaching science can be identified and characterized as a convergence study. It is closely connected with the study of various adjacent fields. This is because coaching science is based on a deeper understanding of what a human being is, and it provokes inner experience and insights. Studies from the perspective of neuroscience have supported this fact. Coaching science should be elaborated as a more systematic theory through continuous research. It will be an area of convergence studies to understand people by creating empirical results through continuous research. 본 연구는 한국 코칭학의 지속적인 발전방향을 탐색하기 위한 목적으로 연구하였다. 이를위해 1995년 이후부터 2015년까지 20년간의 국내의 코칭연구 경향을 살펴보았다. 그리고 코칭학의 이론적 근거를 뒷받침하는 코칭관련 학회의 활동내용과 실제 코칭학이 현장에서 적용되고 있는 코칭산업계의 동향 및 코칭학에 기대하는 사회적 요구를 조사 분석하였다. 본 연구의 주요한 결과는 다음과 같다. 첫째, 사회 구성원들의 삶에 대한 가치 기준이 바뀌고 있고, 급속한 고령화 사회로의 진입과 베이비붐 세대의 대량 은퇴 등으로 인구․사회 구조가 빠르게 변화하고 있으며 이 과정에서 코칭에 대한 사회적 요구(Social needs)가 더욱 증대되고 있음을 알 수 있었다. 둘째, 코칭산업계가 현재 학계의 지원을 가장 필요로 하는 분야는코칭효과의 객관적 검증방법, 세분화되고 있는 코칭유형에 따른 적합한 프로세스의 구축, 코치의 역량 증대, 국내 실정에 맞는 한국형 코칭 모델의 개발인 것으로 나타났다. 셋째, 융합 학문으로서의 코칭학의 발전 가능성을 파악할 수 있었다. 인근 학문들과의 융합적 연구가 인문학분야와 뇌 과학분야로까지 확대되고 있는데, 특히 뇌괴학 분야에서의 연구결과들은 코칭의 효과에 대해 분명한 과학적 근거를 제시하고 있다는 점에서 주목할 만하다. 이는 코칭학이 사람에 대한 깊은 이해를 바탕으로 내면 체험과 통찰을 촉진함으로써 변혁적 성장을 이루어 내는데 매우 유용한 융합학문의 한 영역으로 발전해 가고 있음을 나타내는 것이라 할 수 있다.

오배자(Rhus japonica Linne ) Methanol 추출물의 항산화 효과

윤형식,이기동,김태철 한국식품위생안전성학회 1992 한국식품위생안전성학회지 Vol.7 No.2

Free-, soluble- and insoluble phenolic adds were extracted from defatted Galla Rhois. The extracts were then dissolved in equal amounts of an soybean oil, and POV (peroxide value) of the resulting substrates, portion of the soybean oil (control) and 0.02% BHT were measured by AOM (active oxygen method) test at 97.8℃ for 40 hours through Rancimat method. Induction period of control, BHT, free phenolic acids, soluble phenolic adds end insoluble phenolic adds by the Rancimat method were 4.8, 10.5, 23.9 and 30.5 hr. The phenolic acids separated and tentatively identified by gas chromatography were catechol, Baltic add, vanillin, protocatechuic add, syringic add, ferulic add.

머리염색이 인체에 미치는 영향

윤형식,황성호,이현륭,김수호,박연석,권낙현,정호진,김동훈,노현주,홍성호,박병찬,이관,정해관 東國大學校醫學硏究所 2002 東國醫學 Vol.9 No.1

일상생활에서 모발염색은 흔히 접할 수 있는 미용의 한 종류로 특히 젊은층을 중심으로 폭발적으로 유행하고 있다. 염색을 위항 사용하는 약제는 표백제와 발색제 등 각종 화학약품이 사용되고 있으나 이로 인한 건강장해에 대한 연구는 그리 많지 않다. 저자들은 염색이 인체의 모발건강에 미치는 영향을 파악하기 위하여 염색과 관련된 주관적 증상과 모발의 변화에 대한 실험적 연구를 시행하였다. 동국대학교 경주 캠퍼스 재학생 80명을 대상으로 설문조사를 시행하여 염색 유 ·무 및 염색 후에 경험한 증상에 대해 설문 조사하였고, 의과대학 재학생 46명을 대상으로 피부 반응 테스트를 실시하였다. 또한 염색 전후의 모발 탄성도를 측정하였고 모발의 상태를 파악하기 위해 전자 현미경검사를 실시하였다. 설문조사 결과 염색 전에 비하여 염색 후 안구혼탁, 안구건조, 시력저하, 발진 및 접촉성 피부염, 모발손상, 모근손상 등의 증상을 더 많이 경험한다고 호소하였다(p<0.05). 모발손상과 모근손상은 헤어드라이어 사용 빈도에 따라 증가하는 것으로 조사되었다(p<0.05). 피부반응검사에서 가려움증이 가장 많은 증상이었으며 이는 여성보다는 남성에서 높은 것으로 조사되었다. 염색 전후의 모발장력은 염색 전 134.5±10.37g, 염색 128.0±30.69g, 염색 이틀 후 112.5±19.69g으로 나타났다. 염색 전후의 모발의 전자현미경 케라틴 층이 현저히 감소하고 모발이 가늘어지는 차이를 보였다. 염색은 모발손상, 모발 케라틴 손상 및 모근 손상, 발진 및 접촉성 피부반응, 안구혼탁, 안구건조, 시력 저하를 유발한다. 따라서 염색약으로 인한 손상에 대한 주의와 예방이 필요하다고 생각한다. 예방대책으로 염색 전 피부테스트를 통한 적합성 여부를 판단하는 것이 필요하며 가급적 염색을 피하는 것이 좋을 것이다. 염색약에 발암물질이 포함되어있다는 보고도 있어 염색 제조사의 철저한 실험과 염색 물질의 선별이 염색으로 인한 부작용을 최소화하는데 중요한 역할을 할 것이다. Hair coloring has became one of the most popular cosmetic activities to younger generations during last decade. However, there are few studies on the health effect of widespread use of chemical dyes. This study was conducted to study the effects of hair coloring dye on hair and other systems. We conducted a questionnaire survey of 80 persons in Kyongju campus, Dongguk University. We have done open patch skin test on 46 medical students. We also conducted scanning electron microscopy to examine the hair strength and structure before and after hair coloring process. Injury of hair and hair bulb, contact dermatitis, turbid eyes, xerophthalmia, and poor visual acuity were the main symptoms complained after hair coloring (p<0.05). Injury of hair and hair bulb were increased by frequency of hair-dryer use(p<0.05). In open patch test, pruritus was complanined by more than half of the subjects. Mean strength of hairs before and after hair coloring was as follows; 134.5 (SD 10.37)g before hair coloring, 128.0 (SD 30.69)g immediately after hair coloring, and 112.5 (SD 19.69)g after two days. The scanning electron microscopic findings of hair surface before and after hair coloring showed decreased keratin layer and thinning of the hair. Hair coloring induces injury to hair, its keratin layer, and hair bulb as well as contact dermatitis, turbid eyes, xerophthalmia, and poor visual acuity. Therefore, we think that precaution is needed in use of hair coloring dye. To prevent complications induced by hair coloring dye, it is necessary, especially to those with allergy or skin disorders, to perform skin test before action and avoid hair coloring whenever possible. Longterm health effects of hairdye should be studied and manufacturing companies should try to minimize complications induced by hair coloring dye.

필터뱅크를 이용한 적응노치필터의 설계 ( A Design of Adaptive Notch Filter Using Filter Bank )

윤형식,김윤호,임재환,박상희 대한전자공학회 1992 대한전자공학회 학술대회 Vol.1992 No.1

데이터 베이스를 이용한 자기구성 퍼지 제어기 ( Self-Organizing Fuzzy Controller Using Data Base )

윤형식,이평기,전기준 대한전자공학회 1991 대한전자공학회 학술대회 Vol.1991 No.01

시각 패턴의 특징추출을 위한 신경회로망 ( neural Network Model Feature Extraction of Visual pattern )

윤형식,고용훈,박상희 대한전자공학회 1985 대한전자공학회 학술대회 Vol.1985 No.1

고(故) 영암 김응조목사의 설교 주제 변천에 관한 연구

윤형식 한국설교학회 2011 설교한국 Vol.3 No.1

栽培中 Tomato 果實의 窒酸鹽 및 亞窒酸鹽과 Ascorbic acid의 含量變化

尹衡植,申大休,崔載春,權重浩 慶北大學校 1982 論文集 Vol.33 No.-

This experiment was carried cut to investigate the relationship between nitrite and ascorbic acid contents in two kinds of tomato fruits namely, Bokwang, Suekwang, which were different distinguished in growth periods during culture. The results obtained were as follows. The nitrate content in two kinds of tomato fruits was relatively higher in Bokwang than Suekwang. It indicated high content as 5.8-12.5 ppm in flesh and 0.3-2.5 ppm in gelatinous pulp. In the beginning of growth period, nitrate content in flesh was 50-62.5ppm, and in the latter period was 21.3-38.4ppm. In the case of gelatinous pulp, it was decreased from 14.0-16.2ppm in the beginnig period to 9.3-10.7ppm in the latter period. In the case of nitite, there was no difference between two varieties. Nitrite content during growth increased from 0.15ppm to 0.21ppm in flesh and from 0.06ppm to 0.1ppm in gelatinous pulp. There was no difference between two varieties during growth in total ascorbic acid content and its concentration was 24.2-27.5mg in gelatinous pulp and was 13.8-18.6mg in flesh. The difference between two parts was about 10mg. In the changes of nitrate and nitrite content in tomato fruits, nitrate was decreased, whereas nitrite content was increased. In the changes of nitrate and ascorbic acid content in tomato fruits, nitrate content was decreased but that of ascorbic acid was increased slightly. In the changes of nitrite and ascorbic acid content in tomato fruits, nitrite content was increased and that of ascorbic acid was slightly increased too.