희토류원소에 의한 탈황 및 개재물 형태변화에 관한 연구

박종우,문인기,송규섭 대한금속재료학회(대한금속학회) 1983 대한금속·재료학회지 Vol.21 No.4

Together with the deoxidation and desulphurizaton behaviors of RE (rare earth element) treated molten steel, the changes in shape, size, and constitution of the RE inclusions after RE treatment were studied in 0.3%C-1.3%Mn-0.02%S steel using high frequency induction furnace with magnesia crucible. It was found that little additional deoxidation occurred when RE addition was made to the molten steel pre-deoxidized with 0.05% Al, whilst considerable desulphurization was observed. The effectiveness of desulphurization increased with the amount of RE added. It is believed that the desulphurization occurred mainly by the formation of RE-sulphide rather than RE-oxysulphide and the growth of RE-sulphide was accelerated by the induction stirring. During holding after RE treatment, resulphurization and fading of globular RE-inclusions, accompanied by the formation of MnS, occurred possibly due to the reoxidation of the molten steel.

초소성 8090 Al-Li 합금판의 성형성

박종우,문인기,유재은 대한금속재료학회(대한금속학회) 1992 대한금속·재료학회지 Vol.30 No.2

A series of blow formings was performed to develop a forming limit diagram of a superplastic 8090 Al-Li alloy sheet. The forming limit showed minimum in major strains at. a plane strain state, and increased with increasing the absoulte value of minor strains. It was found that the grain size and volume fraction of cavities were samall, and they had little effect on the forming limit, while diffuse necking and localized necking had some influence. The minor effect of the cavitation was considered to be due to the back pressure and somewhat high strain rate during forming.

전문직 이론에 관한 일 고찰 : 사회사업을 중심으로

박종우 慶星大學校 社會科學硏究所 1997 社會科學硏究 Vol.13 No.1

移行上皮癌을 同伴한 巨大 水腎症

朴鍾雨,李泰淑 충남대학교 의과대학 지역사회의학연구소 1977 충남의대잡지 Vol.4 No.1

The patient, 65 year old male, admitted Chungnam National University Hospital because of left flank pain and urinary frequency. Gross finding of nephrectomized specimen show atrophy of renal parenchyma and marked dilatation of renal pelvis with about 1,500 cc of urine. Microscopic findings are showing well differentiatiated papillary transitional cell carcinoma with chronic pyelonephritis. We have experienced a case of giant hydronephrosis combined with transitional cell carcinoma of renal pelvis, and report this case with brief review on the literatures.

旅軒 詩에 있어서 ‘敬’의 이념과 형상화 방식

박종우 동양고전학회 2010 東洋古典硏究 Vol.41 No.-

이 논문은 旅獻 張顯光의 시에 있어서 ‘敬’의 이념이 어떻게 문학적으로 형상화되었는가에 대한 試論的 고찰이다. 우선 예비적 고찰로서 敬 개념의 사적 추이와 범주를 정리하면서 여헌이 생각한 ‘敬’ 이념은 무엇이었는지 살펴보았다. 이를 통해 여헌이 程頤에서 朱熹까지 이어지는 道學史的 맥락에서 실천 이념으로서 敬을 강조하였음을 확인하였다. 본고는 이러한 敬 이념의 시적 형상화를 ‘淸淨의 추구’와 ‘氣像의 강조’로 나누어 해명하고자 하였다. 잔잔하고 맑은 냇물과 같은 깨끗한 德性을 가진 사물은 여헌 시에 있어서 중요한 제재이다. 여기서 냇물의 ‘고요함’과 ‘청정함’의 이미지는 ‘敬’ 이념의 시적 형상화와 깊이 연계된 것임을 알 수 있었다. 아울러 깊은 산 속과 같은 속세와 분리된 無垢의 세계에 대한 希求도 그와 같은 삶의 태도를 형상화한 것으로 여헌 시의 특징적 일 국면을 이루고 있음을 밝혔다. 다음으로 혼탁한 속세를 거부하고 청정한 세계의 추구하려는 시적 화자와 더불어 孤高한 氣像의 강조도 여헌 시에 자주 보이는 특징임을 확인하였다. 대, 소나무, 鶴, 산 등 ‘孤高’의 이미지에 잘 부합하는 제재들이 여헌 시에 빈번하게 나타나는 것이 孤高한 氣像의 강조와 밀접한 관계가 있음을 살펴보았다. 이와 더불어 이러한 주제의 시에 나타나는 고양된 詩的 興趣와 그에서부터 비롯된 비약적 상상력 등은 여헌의 시 세계를 깊이 이해하는 단서임을 밝혔다. 이제 본격적인 연구와 함께 여헌의 시세계를 晦齋나 退溪 등 여타 도학파 문인들의 시세계와 비교하고 변별점을 考究하는 것이 남은 과제이다. 비슷한 시기의 도학자라고 하더라도 시대적 여건과 삶이 궤적이 상이했던 점을 고려해야 할 필요가 있다. 전란의 시대에 고향을 떠나 이주를 거듭했던 여헌의 경우 16세기에 出仕한 士林이나 在地的 基盤이 확고했던 士族들과는 문학적 사유나 형상화 방식에는 분명히 편차가 존재할 것이기 때문이다. This thesis is for clarifying a few aspects of ‘Kyung(敬)’ ideology and figures appearing in Yeheon(旅軒)'s poem. This ideology and figures is a kind of a imaginative thing that a poet designed. This feature is a very important subject of Yeheon(旅軒)'s poem world, so that we are going to make it clear. First, we focused his aspirations of virtual uncontaminated areas and found out his big store of life wisdom and knowledge. The second is we thought about a displaying a emphasis of proud spirit[氣像] in his own poem world, and we found that he saw things from an unworldly point of view. Finally we talked about several features of Yeheon(旅軒)'s poem world. Now we have to compare Yeheon(旅軒)'s poem and any other Dohakpa(道學派) poets for example Toegye(退溪), Hwejae(晦齋) etc. And we must clarify the whole poem world of Dohakpa(道學派). In the end, I'm so sure that we will get a prospect of their literature.

각종 혈액질환에서의 PDW에 관한 연구

박종우 충남대학교 의과대학 지역사회의학연구소 1985 충남의대잡지 Vol.12 No.2

The heterogeneity of platelet size is related with their functional and metabolic activity. Young platelets are larger, denser, and more active than the old ones. Recently, coulter counter model S plusⅡ was introduced and could calculate the platelet distribution width (PDW). Therefore this study was planned to evaluate the clinical significance of PDW in various hematologic diseases. The results were summarized as follow: 1. There was nonlinear inverse relation between PDW and platelet count. PDW was increased in thrombocytopenic patient and decreased in thrombocytosis. 2, PDW was high as increasing WBC count in thrombocytopenic patient. 3. There was nonlinear relation between MPV and PDW in healthy person. 4. The diseases that disclosed normal MPV and normal PDW: pure red cell aplasia, hemolytic anemia. 5. The diseases that disclosed normal MPV and high PDW: Polycythemia vera, Erythroid hyperplasia. 6. The diseases that disclosed low MPV and normal PDW : Hypoplast marrow, Metastatic tumor and lead poisoning. 7. The diseases that disclosed low MPV and high PDW: AML, ALL, preleukemia and essential thrombocythemia. 8. The diseases that disclosed high MPV and high PDW: Iron def. anemia, Reactive marrow. 9. The diseases that disclosed high MPV and low PDW: Idiopathic thrombocytopenic purpura.

충남대학병원에서 최근 정도관리

박종우,최석우,송만수 충남대학교 의과대학 지역사회의학연구소 1994 충남의대잡지 Vol.21 No.2

Nine trials of general chemistry and eight trials of blood gas were performed for external quality assessment of clinical chemistry using commercial control sera in 1994 in Korea. Test items of general chemistry were sodium, potassium, chloride, BUN, glucose, calcium, phosphorus, uric acid, creatinine, bilirubin, total protein, albumin, cholesterol, triglycerides, AST, ALT, and LDH. Test items of blood gas were pH, pO_2 and pCO_2. The mean of each item in general chemistry and in blood gas were used as designated target value for the calculation of Variance index score(VIS), respectively. Variance index score(VIS) system are used to evaluate the performance of participant's quality control. Also coefficient of variation(CV) was given as guidance of each method. Mean CV of 14 items except enzyme tests was 7.0% and the range was 2.4-12.7%. T he CV's of glucose, phosphorus, uric acid, creatinine, bilirubin, total protein, albumin, and cholesterol are better than last year. Mean VIS of 16 items in general chemistry was 57 and the performance of 11 items was improved than mean. In blood gas control, the range of mean CV was 0.2% in pH, 11% in pO_2, and 7.0% in pCO_2. The range of mean CV of blood gas in each trial was 0.1-0.3% in pH, 8.8-14.5%- in pO_2 and 5.1-16.9% in pCO_2.

전혈을 이용한 혈소판 응집검사에 관한 고찰

박종우,박윤미 충남대학교 의과대학 지역사회의학연구소 1998 충남의대잡지 Vol.25 No.1

Platelet aggregation test was done by the impedance method and the optical method using Whole Blood Lumi-Aggregometer(Chrono-Log Corp., Havertown, PA). This study was performed to determine the optimal concentration of each aggregationing agent(ADP, collagen, ristocetin), maximal aggregability and aggregation time in each method, and evaluate the influence of other blood components in the impedance method. Method : Platelet aggregation test was performed by the impedence and optical methods in citrate whole blood from 20 normal volunteers Results : By examination, the following results were obtained 1. The maximal aggregabilities at the optimal reagent concentrations were 8.36±2.87ohm at ADP 12uM, 14.3±2.49ohm at collagen 5ug/mL, and 15.2±2.8ohm at ristocetin 1.25mg/mL in the impedance method, and 74±11% at ADP 6uM, 84.3±9.12% at collagen 5ug/mL, and 93.4±9.12% at ristocetin 1.25mg/mL in the optical method. 2. In normal controls the platelet aggregabilities were not affected by other blood components such as Hct, WBC and Platelet. 3. The average of the maximum aggregation time was 3.0-5.4 minutes by impedance method and 3.6-4.6 minutes in optical method in normal controls. Conclusion : In the platelet aggregation test, the impedance method is considered to be very useful to find out abnormal platelet function.

肝炎試藥의 程度管理 Microplate法과 MEIA法의 比較

박종우,송인숙 충남대학교 의과대학 지역사회의학연구소 1996 충남의대잡지 Vol.23 No.2

Background : The authors investigated HBsAg and anti-HBsAb EIA detection kits in 1,500 cases, which contained 500 cases of HBsAg positive confirmed by first screening test and comparison with HBV nested PCR and anti-HBV RIA methods. Methods At first, authors performed screening tests which EIA detection kits (Behring) were run by ELISA process II(Behringwerke® AG, German) and one detection kit(Abbotts) was run by IMx(Abbott Park® USA). And then the samples which were discrepant results investigsted by RIA method and HBV DT A nested PCR. Results : By examination, the following results were obtained: 1. Serum HBsAg was detected in 43.5%, 43.9% of 1500 cases for Behring, Abbotts respectively. Anti-HBsAb was detected in 45.7% for Behring and 49.9% for Abbotts. 2. The discrepancy rate of 1500 cases between Behring® and Abbotts® EIA kits was 6.9% on HBsAg detection kits. In case of anti-HBsAb detection kits, the discrepancy rate was 14.0%. 3. The sensitivity, specificity, positive predictive value and negative predictive value for anti-HBs was 95.7%, 94.3%, 93.8%, 96% and for HBs Ag, the sensitivity, specificity, positive predictive value and negative predictive value 98.0%, 98.2%, 97.9%, 98.4% in Behring. In Abbotts, 97.1%, 91.2%. 91.2%, 97.1% for Anti-HBs and 98.8%, 98.2%, 98.3%, 99.1% for HBs Ag. Conclusions : The difference in sensitivity and specificity between three EIA kits may have been the results of different cut-off value of positive control and negative control. There was no difference between three HBsAg aid anti-HBsAb diagnostic EIA kits.

韓國의 人口와 老人問題

朴宗祐 慶北大學校 東洋文化硏究所 1980 東洋文化硏究 Vol.7 No.-

Recentty, the ageing problem of Korean population is becoming a matter of primary concern among Korean sociologists as well as demographers. This fact implies that they think Korean society is either currently experiencing a type of problem related to the aged people or at least will confront it in the near future. Present paper, therefore, tries on the one hand to measure both the present level and the future trend of the ageing of Korean population and on the other to analyze the type of the ageing problem characteristic to the following respective stages of each ageing level. Two of these aspects are combined into one conceptual scheme to analyze the ageing problem of Korean population, which is basically relied on the theory of demographic transition. There are three stages in the development process of the ageing of a population, which develops from Stage I through Stage Ⅱ to Stage Ⅲ, and each stage has its own characteristic problems of the aged either demographic or social whichever. Types of Ageing Problems Characteristic to the Respective Stages of Each Ageing Level ◁표삽입▷(원문을 참조하세요) Stage Ⅰ represents the period prior to the development of the problems of the ageing of a population. Hence there is in fact neither demographic nor social problems of the aged in this stage. Stage Ⅱ corresponds with the present situation of Korean ageing problems. It does not seem to be true that Korean society is currently confronting the demographic problems of the ageing. However, the Korean aged people is current experiencing a serious familial and social maladjustment--what is called, 'cultural lag' of the aged themselves due mainly to the rapid process of urbanization during adlast two decades. Although urbanization was basically initiated in Stage Ⅰ, only very small segment of the aged people experienced familial and social mal-adjustment in that stage. Therefore, their maladjustment was confined to the few and understood to be personal. But rapid development of urbanization together with considerable extention of longevity of the aged in Stage Ⅱ switched the aged problems from the few and personal to the majority and social. Considering demographic and socioeconomic variables related to the ageing of a population, I think Korean society will enter into Stage Ⅲ around the begin of the twenty first century. The characteristic problems of this stage are considered to be somewhat different from those of Stage Ⅱ: Traditional family norms are expected to be considerably changed so that traditional role-prescriptions of the aged will be fundamentally questionned in the family life and three generation family houshold will no longer be commonplace in Korean society as is in Stage Ⅱ. Thus in the final stage of demographic transition it will be demographic problems of the ageing rather than the social maladjustment problems of the Korean aged themselves that we might be confronted with.