Influence of Al2O3 Content and Cooling Rate on Crystallization in Fe2O3–CaO–SiO2–Al2O3 Systems

Tae Jun Park,Joon Sung Choi,Dong Joon Min 대한금속·재료학회 2022 METALS AND MATERIALS International Vol.28 No.9

The behavior of silico-ferrite of calcium and aluminum (SFCA) phases and the influence of sintered ore quality were investigatedusing a confocal laser scanning microscope to understand how the Al2O3content of iron ore affects the sintered orestructure and the crystallization behavior of SFCA in a Fe2O3–CaO–Al2O3–SiO2 pseudo-quaternary system. The experimentalresults were used to inform simulations of the heterogeneous dynamic behavior in response to the rapid temperature changesand various chemical compositions typically encountered in actual sintering processes. Increasing the Al2O3content in theFe2O3–CaO–Al2O3–SiO2 pseudo-quaternary system led to the hematite content decreasing, which affects the reducibilityof the sintered ore. The correlation between the creation of SFCA and the cooling effect associated with varying the Al2O3is discussed in detail.

낙후 원도심 거주환경의 물리적 기능적 만족도와 심리적 정서적 만족도의 거주기간에 대한 영향력 비교 분석

안동준(Ahn, Dong-Joon),박성용(Park, Sung-Yong) 대한건축학회 2018 대한건축학회논문집 Vol.34 No.7

The goal of this research is to compare influences for living periods between physical functional satisfaction and psychological emotional satisfaction in a ghetto area. The research site is ‘Sujin1 dong’ in Sungnam city which is one of the oldest residential areas in the city. Based on the analysis of the urban contexts for the research site, surveys are conducted to gather the data which are treated by several statistical techniques: ‘Factor analysis’, ‘Reliability Analysis’, ‘Multiple regression analysis’. Through the statistical process, conclusions are drawn as follows. In the ghetto urban area, ①-The higher the psychological emotional satisfaction, the longer the living period, ②-The longer the residence period, the lower the physical and functional satisfaction, ③-The two satisfactions tend to be opposite to each other according to the living period. ④-The psychological emotional satisfaction is more related with living period than the physical and functional satisfaction is.

당뇨병 환자에서 발생한 대장 가성폐색증 1예

이재형,강준구,박준성,이창범,박용수,김동선,함준수,김태화,안유헌,박충기 대한당뇨병학회 2002 임상당뇨병 Vol.3 No.2

가성 장폐색은 기계적인 폐색부위가 없이 복부팽만과 구토 등 장폐색의 증상과 징후가 나타나는 질환을 말하며, 선행원인을 찾을 수 없는 원발성 가성 장폐색과 다른 질환에 이차적으로 발생하는 속발성 가성 장폐색으로 나눌 수 있다. 당뇨병은 잘 알려진 속발성 가성 장폐색의 원인이지만 실제로 당뇨병에 의한 가상 장폐색의 발생 빈도는 매우 드문 것으로 보이며, 가성 장폐색의 적절한 치료에 대해서는 아직 논란이 있다. 저자들은 2형 당뇨병 환자에게 대장에 국한된 급성 가성 장폐색을 진단하고 보존적 치료를 시행하여 호전된 1예를 경험하였기에 문헌고찰과 함께 보고하는 바이다. Colonic pseudo-obstruction is a disorder characterized by gross dilatation of the colon in the absence of any anatomic lesions, which obstructs the flow of the intestinal contents. Diabetes is a well known cause of secondary pseudo-obstruction but its prevalence in rare and not well understood. A 59-year-old woman patient was admitted due to abdominal distension and nausea of a day's duration. She was diagnosed with diabetes 15 years ago, but the condition had been poorly controoled. On the abdominal radiographs, there were marked small and large bowel dilatation with the, exception of the descending colon. Our initial diagnosis was mechanical obstruction, but the possible causes were not found. Also, we could not find another cause of the secondary pseudo-obstruction, with the exception of diabetes mellitus. Thus, she was diagnosed with a diabetes induced intestinal pseudo-obstruction. The colonic dilatation was resolved by conservative management and she became comfortable in 10 hospital days, and was subsequently discharged.

우리나라에서 솔껍질깍지벌레의 분포확산

임유진,이상명,김동수,김준범,최광식,이신혜,박정규,이동운,Lim, Eu-Gene,Lee, Sang-Myeong,Kim, Dong-Soo,Kim, Joon-Bum,Lee, Shin-Hye,Choi, Kwang-Sik,Park, Chung-Gyoo,Lee, Dong-Woon 한국응용곤충학회 2012 한국응용곤충학회지 Vol.51 No.1

솔껍질깍지벌레는 우리나라 곰솔림의 주요한 해충의 하나이다. 본 연구는 우리나라에서 솔껍질깍지벌레의 분포를 알아보기 위하여 7개도 3개 광역시, 91개 시군구, 686 읍면동의 해송림에서 2010년 밀도를 조사하였다. 5개도 2개 광역시에서 솔껍질깍지벌레가 서식하고 있었는데 시군구별로는 조사대상의 64.8%인 59개 시군구에서 서식이 확인되었다. 솔껍질깍지벌레의 분포는 남해안 전역과 동해안의 포항, 서해안의 충남 보령지역까지 분포하였다. 충북과 대전광역시 및 제주도에서는 솔껍질깍지벌레의 분포가 확인되지 않았다. 부산지역은 16곳의 모든 구에서 솔껍질깍지벌레가 분포하였고, 시군 단위에서는 전남 해남군의 솔껍질깍지벌레 평균밀도가 1.713마리/0.785 $cm^2$로 가장 높았으며 읍면동 단위에서는 해남군 송지면이 6.36마리/0.785 $cm^2$로 가장 높았다. 곰솔 가지 내의 솔껍질깍지벌레 밀도와 솔껍질깍지벌레가 서식하고 있는 빈도와는 높은 상관관계가 있었다(상관계수=0.89). The black pine bast scale, $Masucoccus$ $thunbergianae$ (Hemiptera: Margarodidae), is a serious pest of the Japanese black pine, $Pinus$ $thunbergii$, in Korea. The distribution of the black pine bast scale was examined, looking overall at 686 towns (eup), townships (myeon) or neighborhoods (dong). There were Japanese black pine ($Pinus$ $thunbergii$) forests in 91 cities, counties (gun) and borough (gu), in seven provinces and three metropolitan cities during 2010. Black pine bast scale were found in 64.8% of cities or counties or borough (59) in 7 provinces and 3 metropolitan cities, and were distributed in all South Costal regions, Pohang in East Costal region and Boryeong in West Costal region. Chungcheongbukdo, Daejeon and Jeju did not have black pine bast scale. All the gu regions in Busan had black pine bast scale, of which the area with the highest prevalence was Haenam in Jeollanamdo (1.713 crawlers/0.785 $cm^2$). Songji-myeon had the highest occurrence rate (6.36 crawlers/0.785 $cm^2$) from the towns, township and dong. The density of black pine bast scale in twigs was highly correlated with percentage of the sample with scale (Correlation coefficacy=0.89).

사업전략·제조구조·생산자동화기술의 유형에 관한 연구

朴愚東,白埈尙 漢陽大學校 産業經營硏究所 1991 産業經營硏究 Vol.3 No.-

視覺情報와 팔動作의 變化가 Ballet Chaine 동작의 正確性에 미치는 影響

朴俊東,馬貞順 東亞大學校 附設 스포츠科學硏究所 1993 스포츠科學硏究論文集 Vol.11 No.-

The purpose of this study was the effects on the movement accuracy of distance and direction with the changes of visual feedbacks and arm actions. The six ballet-majored subjects were classified into High group and Low group by their dance career. All data were expressed as mean, standard errors and t-values, and the .05 level was initially established in significance. The conclusions were summarized as follows; 1. Movement time was not significant in all conditions, but very similar significant level in condition 1 between High group and Low group(P<.05). 2. Movement distance was only significant in condition 2(P<.05), but not significant in the other conditions between High group and Low group. In fact, the movement distances of High group were more longer than Low group in all conditions. 3. Distance error was significant in condition 2 and 3(P<.05), and very significant in condition 4, but not significant in condition 1 between High group and Low group. Distance errors in High group were positive(+) errors, but negative(-) errors in Low group in all conditions. 4. Direction error was significant in condition 3(P<.05), and not significant in the other conditions, but very similar significant level in condition 2 and 4(P<.05) between High group and Low group. The general tendency of direction errors was appeared to negative directive(-) in condition 1 and 3(vision condition), but positive direction(+) in condition 2 and 4(Non-vision conditions) in both group. 5. It was concluded that the significant factor determining the movement accuracy of distance and direction in Ballet Chaine was not their arm action but their visual feedback condition. And the visual feedback condition was not effected on movement time of Chaine.

事業戰略·製造構造·生産自動化技術사이의 適合性에 關한 硏究

朴愚東,白埈尙 漢陽大學校 産業經營硏究所 1992 産業經營硏究 Vol.4 No.-

一部大都市地域 靑少年의 成長發育·最大成長發育年齡·相關性과 回歸直線方程式에 대한 類似縱斷的 硏究

朴正煥,朴淳永,柳東俊 慶熙大學校 1989 論文集 Vol.18 No.-

The authors intended to study by semi-longitudinal research method, the physical status of 329 high school students in urban area ( male ; 164, female ; 165) who had born during the period from March 1 in 1970 to February 28 in 1971. The results are as follws ; 1. Physical growth and development Body height showed the first - step linear development and body weight showed second - step linear development, but relative body weight showed third - step linear development, but relative body wight showed third - step linear development and female excelled male at second - step development. The intersecting ages between male and female were the age 9.5 - 12.5 in case of body height, the age 10.5 - 12.5 in case of body weight, the age 10.5 - 13.5 in case of relative body weight respectively. During these periods, female excelled male in growth and development, but after these periods, male excelled female . 2. Maximum growth age of physical growth and development In case of body height, maximum growth ages were 12.63 for female, which shows that MGA of female appeared about 2.8 years earlier than that of male. In case of body height, maximum growth ages wore 12.63 for male and 9.82 for female, which shows that MGA of female appeared about 28 years earlier than that of male. 3. The stanadard body weight of the Korean youth In case of 6 years of age group, correlation coefficient of r=+0.685 ( p<0.001 ) for male and of r=0.658( p<0.001 ) between body height and body weight was found, from which respective linear regression equation of body weight and body height was established for male and female as follow ; Male : Y ( Body weight )=0.391 X ( Body height )-25.47 (Sy. x=±1.89) Female : Y ( Body weight )=0.336 X ( Body height )-19.48 (Sy. x=±1.75) Similar regression equations of body weight and body height were found all age groups from 6 to 17 years old listed in table 5.

저열량영양식품 섭취에 따른 비만여성의 체중감량 효과에 관한 연구

박순영,최중명,김동현,최경식,최봉근,윤태영,유동준 한국보건통계학회 2002 보건정보통계학회지 Vol.27 No.1

In the method of obesity treatment, Dietary method, Exercise method, Behavior method, and Drug method, Dietary method is the most important control method of obesity. The aim of this study is that evaluate the weight reduction effect of the specific low calorie diet products (KSD I and 2) in obese women. Twenty five women who were volunteer participated in this study. They have no heart diseases and metabolic diseases. we classified two groups : obese group and standard group. Anthropometric indices were measured in all subject for four times. Venous blood sample were taken to determine the lipid profiles, glucose level, and liver function test. In obese group, body weight were reduced 2.85±1.46kg, but showed statistically non-signicicant. Body mass index were gradually reduced, 1.09±0.93kg/m^2(p<0.05).In blood analyses, total cholesterol were reduced 10.61 ±33.4mg/dℓ ( p<0.05). KSD 2 significantly inhibited maltase, sucrase and α-glucosidase from rat intestine, and porcine pancreatic lipase, although KSD I inhibited only the sucrase.

다발성 뇌수막종

박상준,박세혁,신동익,오세문 대한신경외과학회 1998 Journal of Korean neurosurgical society Vol.27 No.12