원발성 장간막 정맥 혈전증

정기용,김영석,김유사,박창근,김중신 대한혈관외과학회 1987 Vascular Specialist International Vol.3 No.1

Primary mesenteric venous thrombosis causes a hemorrhagic infarction of the intestine from spontaneous occlusion of the superior, or less commonly inferior, mesenteric veins in patients without specific hematologigic, liver or heart disease or antecedent trauma. It is a distinct entity from emsenteric arterial occlusions and from more common secondary venous thromboses. The rarity of the condition, the difficulty in making a correct preoperative diagnosis and the tendency of mesenteric thrombosis to recur after apparent adequate surgical therapy have been emphasized in the literature. Early surgical treatment and postoperative anticoagulation therapy improved the outlook of the disease but the mortality is still high especially if there is a recurrent thrombosis which is expected in about 29% of patients. We have successfully treated, in February of 1986, a 37 year old male with a past history of deep vein thrombophlebitis who presented with intermittent epigastric pain and vomiting of 9 day's duration. At laparotomy on the 2nd day of amission extensive hemorrhagic infarction of the small intestine from the point 30 cm distal to the ligament of Treitz was found requiring excision of a total of 220 cm of small bowel. Twelve hours postoperatively, intravenous heparin was initiated and continued for 48 hours but was forced to discontinue because of intraperitoneal bleeding. On the 10th postoperative day, the second laparotomy was performed because of suspicion of recurrent thrombosis and an additional 100 cm of small bowel was resected leaving only about 70 cm of small bowel. The recurrent venous thrombosis was obviously from the area of previous anastomosis. Postoperatively the patient was treated with heaprin for 10 days and then changed to oral coumadin. The patient did have symptoms resulting from short bowel first few months but gradually improved to the present level of the to two formed bowel movements daily with no subjective symptoms about 16 months after the surgery.

炭酸칼슘의 分散에 관한 硏究

鄭琦溶 梨花女子大學校 韓國生活科學硏究院 1986 韓國生活科學硏究院 論叢 Vol.37 No.-

炭酸칼슘의 分散에 관한 연구 Rheometer를 사용하여 외용무기약제인 탄산칼슘의 분산을 실험하였다. 분산제로서는 Tragacanth Gum, Soadium Carboxymethyl Cellulose, Methyl Celluose, Sodium Slginate, Gelatin, Span 20 등을 사용하였다. 일역학적으로 안정한 탄산칼슘의 서스펜젼을 얻기 위하여 상온에서 분산제의 혼합쌍을 여러가지로 변화시켜, 그 shelf time에 따르는 Floculated Phenomena를 측정하고 또 그 Pseudoplasticity를 관찰하였다. 그 결과 Tragacanth Gum, Methyl Cellulose 및 Gelatin의 혼합쌍이 탄산칼슘을 균일하게 분산시킴을 나타내었다. The dispersion of calcium carbonate, a surgical inorganic medicamentum, was studied by using a rheometer in this experiment. Tragacanth gum, sodium carboxymethyl cellulose, methyl cellulose, sodium alginate, gelatin, span 20 etc. were used as suspending agents. Various combined couples of suspending agents were studied to get a suspension of calcium carbonate which is thermodynamically stable at the room temperature, and then the flocculated phenomena according to its shelf time and its pseudoplasticities were observed. As a result, it showed that the combined couple of tragacanth gum and methyl cellulose made calcium carbonate disperse uniformly.

첨가물에 의한 석고스케일의 억제

정기용 梨花女子大學校 韓國生活科學硏究院 1971 韓國生活科學硏究院 論叢 Vol.6 No.-

This expsriment showed that the additives such as sodium dihyrogen phosphate,polyoxyethylene sorbitan monostearate, sodium hexamtaphosphate and tetrasodium pyrophosphate presented the inhibition effdct to calcium sulfate and especially tetrasodium pyrophosphate was s predominant inhibiting agent. Also this experiment tetrasodium pyrophosphate which concentrations were 0.05ppm respectivel,at pH8 even in high concentration such as 0.03M CaSO_4 solution could almost completely be inhibited the calcium sulfate scale deposition.

무주 프로젝트- 공공건축과 건축의 공공성

정기용 열린전북 2007 열린전북 Vol.2007 No.12

환자의 영양상태가 면역에 미치는 영향

정기용 啓明大學校 醫科大學 1983 계명의대학술지 Vol.2 No.2

갑상선암의 진단과 치료

정기용 啓明大學校 醫科大學 1997 계명의대학술지 Vol.16 No.4

갑상선단독결절에서 악성여부를 감별하는 완벽한 검사방법은 없으나 세침흡입세포검사가 현재까지 알려진 최선의 검사이나 약 10%의 위음성율을 보이고 악성의 진단율은 약40%에 지나지 않아 한계점을 보이고 있다. 따라서 갑상선암의 의심이 있다면 다각적인 임상적 검사 및 환자의 추적검사가 필요할것으로 생각된다. 갑상선단독결절의 치료선택에 있어 가장 중요한 점은 역시 결절의 악성여부라는 사실은 이론의 여지가 없다. 양성결절의 수술 후 합병증이나 수술에 따른 절개선 반흔 역시 최소화 할 수 있어 악성종양의 부담감을 가질 필요없이 또한 수술의 적응증을 너무 좁게 결정하여 악성종양을 놓치거나 종양을 가지고 생활한다는 환자의 심리적 부담감을 가중시킬 필요없이 수술을 권장하는 것이 좋다고 생각되며 갑상선 악성종양의 경우 수술방법의 선택은 수술전 평가 혹은 수술시 육안적 소견에 따라 결정되어야 할것으로 사료된다. 따라서 갑상선수술 특히 악성종양인 경우에는 경험이 많은 갑상선수술 전문의에 의해 시행 되어 져야 한다고 생각된다.

청년의 인구사회경제적 요인에 따른 정책영역별 이질성과 동질성에 관한 연구

정기용,이성욱,민효상 성균관대학교 국정전문대학원 2022 국정관리연구 Vol.17 No.2

After the Framework Act on Youth was enacted in February 2020, the youth support policy began to be systematically implemented. In addition, as the youth policy budget increases significantly, the importance of youth is increasing. As young people are defined as 19 to 34 years of age, they are regarded as a group of policy targets. However, there are limitations in considering youth as a homogeneous group and pursuing policies. Therefore, this study attempted to determine whether the youth are homogeneous. This study classified adolescents by applying population, socio-economic factors. In addition, a comparative analysis was conducted on policy areas and perceptions to confirm the homogeneity and heterogeneity of each youth type. As a result of the analysis, the youth were classified into five groups: ‘average’, ‘achievement’, ‘future preparation’, ‘self-satisfaction’, and ‘anxiety’. And the homogeneity and heterogeneity of each youth type were analyzed. Homogeneity was confirmed as all youth types preferred financial and economic policy support the most. However, the preferred policies other than financial and economic policy support differed for each type of youth. In addition, the proportion of preferred policies was different. Based on these analysis results, the youth were identified as a group with both homogeneity and heterogeneity. And based on this, a plan for improvement of youth policy was suggested. 2020년 2월 「청년기본법」이 제정되면서 청년을 위한 종합적이고 체계적인 지원 정책이 추진되기 시작하였으며, 특히 청년정책 관련 예산이 크게 증가하면서 정책대상자인 청년의 중요성이 증가하고 있다. 청년정책에 대한 관심과 지원정책 증가와 함께, 「청년기본법」에서 정의한 만19세 이상 34세 이하인 청년을 하나의 정책대상자 집단으로 간주하고 정책이 추진되고 있다. 하지만, 청년을 하나의 동질한 집단으로 간주하고 정책을 추진하는 것에 한계가 있어 정책대상자인 청년이 균질한가에 대한 심층적 논의가 필요한 시점이다. 본 연구는 이러한 문제의식을 바탕으로 청년을 인구사회경제적 요인을 적용하여 유형화하였으며, 각 청년 유형별 동질성 및 이질성을 확인하기 위하여 정책 영역별 인식차이 비교분석을 실시하였다. 분석결과 청년을 인구사회경제적 요인을 기준으로 ‘평균형’, ‘성취형’, ‘미래준비형’, ‘자기만족형’, ‘불안형’ 총 5개 집단으로 유형화하였다. 각 청년 유형별 이질성과 동질성을 파악하기 위해 정책 영역 및 인식에 대한 차이분석을 실시한 결과 모든 청년 유형은 공통적으로 금전적 및 경제적 정책지원 가장 선호하는 것으로 나타났다. 하지만, 금전적 및 경제적 정책지원 이외의 선호하는 정책 순위 및 선호 비율 등에서 차이가 발생하였으며, 주거, 금융, 문화·여가 등 영역에서의 인식 차이를 확인하였다. 이러한 결과를 통해 청년층은 금전적 및 경제적 지원 정책 추구라는 동질성과 선호하는 정책 및 비율, 다양한 인식에서 차이점을 보이는 이질성을 확인하였다. 이러한 분석결과를 토대로 향후 청년정책의 개선방안을 제시하였다.

급성 상장간막 동맥 폐색증 : 증례 보고 Report of 5 cases

정기용,김성수,김유사,강중신,조원현,전석길 대한혈관외과학회 1993 Vascular Specialist International Vol.9 No.1

Acute Mesenteric ischemia results from sudden occlusion of the superior mesenteric artery due to embolus or thrombus. Because of recent increase in atherosclerotic vascular disease in Korea, we are experiencing more intestinal ischemic syndromes than in the past and we are required to pay more attention to the possibility of ischemic bowels when there is past history of unexplainable postprandial abdominal pains, weight loss of unknown cause and bloody stool of unidentified origin. From January 1990 through December l992, we have experienced five patients with acute intestinal ischemia. In three patients, the diagnosis was made prior to abdominal exploration by arteriography. In two patients, the diagnosis was made at the time of exploration which was performed under the impression of generalized peritonitis. Associated cardiovascular disease such as myocardial infarction, aortic regurgitation, and heart failure were present in three patients. One patient was undergoing hemodialysis for chronic renal failure and the remaining patient was on immunosuppressive medications(Cyclosporin and prednisolone) after recent renal transplantation. Three patients were treated with thromboembolectomy with vein patch grafts, one patient with thrombectomy with balloon angioplasty, and one patient with massive resection of necrotic bowels and end-to-end anastomosis. Three patients, two of vein patch graft patients and one with bowel resection, died postoperatively on the 7th, 15th and 16th day, respectively. Awareness of the presence of the problem, early diagnosis and aggressive management will probably contribute for the improvement of the survival of in these seriously ill patients.

無觸媒酸化에 依한 黃酸암모늄의 工業的 製法에 關한 硏究

정기용,Chung, Ki-Yong 대한화학회 1966 대한화학회지 Vol.10 No.2

Ammonium sulfate synthesized by the air oxidation methods without catalyst using the reaction vessel which was fitted with fritted glass at the bottom of it and introducing, through the bottom, ammonia and air with constant flow rates to sulfurous acid solution of constant concentrations at the given temperatures. The experiment showed that the oxidation process was accelerated in accord with the increase of the air flow rates when the ammonia flow rate was constantly kept at ca. 100ml/min. in high temperatures. When the pH of the solution reached 9.0, the oxidation was nearly completed. It is assumed that in the process of reaction, $[O_{2}{\to}HSO_{3}^-]^{\neq}$ would be produced as an activated complex and the reaction was thought to be first order. The experiment indicated that the 0.5M sulfurous solution could be oxidized up to 98.54% at the flow rates of ammonia and air, 100ml/min., and 4l/min., respectively at $50^{\circ}C$.

유방암에 있어서 ER, PR, P53, c-erbB-2 및 PCNA 단백발현과 병리학적 소견과의 상관성 및 예후와의 관계

정기용,강구정,손창용 계명대학교 의과학연구소 2000 계명의대학술지 Vol.19 No.1

Several potential prognostic factors are available for patients with breast cancer, and many more have been identified and studied. The prognostic factors including age, tumor size, axillary lymph node metastasis, stage of the tumor have been reported as useful prognostic factors. The purpose of this study was to evaluate for correlation between classical prognostic factors and steroid receptors, p53, c-erbB-2, PCNA (proliferating cell nuclear antigen). We analysed 64 cases of breast cancer patients who had been treated during January 1987 to December 1989 and currently followed up at the Department of General Surgery, Keimyung University. The paraffin blocks of 64 breast cancer patients were stained with monoclonal antibodies specific for steroid receptors, p53, c-erbB-2, PCNA. The positive rate of special stain for estrogen receptor was 23.3%, progesterone receptor; 46.6%, p53; 40.6%, c-erbB-2; 22.8%, and PCNA; 92.2%. The stages of the tumor was negatively related to progesterone receptor concentration(p=0.03). p53 positive rate of younger patient (below 50 years) was higher than older (above 50 years). But, no relationship was observed between c-erbB-2 and PCNA and other classical prognostic indicators. The survival rate was higher in patients with positive estrogen receptor patients(p=0.02) and c-erbB-2 negative patients(p=0.01). We suggest that estrogen receptor and c-erbB-2 are useful prognostic indicators for survival of breast cancer patients who have received adjuvant chemotherapies.