黃酸第一鐵로부터 含水酸化鐵生成에 關한 硏究

성주경,설수덕,황용길,Sung Joo Kyung,Suhl Soo Duk,Whang Yong Kil 대한화학회 1975 대한화학회지 Vol.19 No.2

황산제일철을 원료로 해서 함수산화철 안료를 제조하기 위한 실험이다. 황산제일철을 암모니아로 중화해서 Mohr's salt(ferrous ammonium sulfate)을 만들고 Mohr's salt의 농도를 Fe(II) 이온농도, 14${\sim}$72g/l, 수소이온농도를 pH3 또는 6으로 조절한뒤, 반응온도는 $90{\sim}100^{\circ}C$로 일정하게 유지하고 반응시간 2시간, 3기압으로 공기 가압한 결과는 다음과 같다. Mohr's salt의 농도가 진하고, 중성으로 갈수록 함수산화철의 수득율이 증가되며, Mohr's salt 농도가 Fe(II) 이온농도, 42.81g/l 일때, 91.5% 이상의 수득율을 얻었다. 이렇게하여 생성된 함수산화철의 결정형은 $\alpha$-goethite형이며, 색상도 천연 ${\alpha}$-goethite와 유사하였다. 이것을 $500^{\circ}C$로 하소(calcination)하니 미려한 적갈색을 띤 ${\alpha}-Fe_2O_3$가 생성되었다. The formation of iron oxide hydroxide in a ferrous sulfate was studied in different contents of iron in the solution at a temperature range of 90 to $100^{\circ}C$ under 1${\sim}$3 atmospheres. The Mohr's salt thus formed was hydrolyzed under 1 to 3 atmospheres, in 14 to 72 g/l of iron content in the solution pH 3 or 6 for two hours at 90 to $100^{\circ}C$. The results obtained was as follows; 1) In Mohr's salt solution, as the iron content was increased, with decreasing the concentration of hydrogen ion, the yield of iron oxide hydroxide was gradually increased. 2) When iron content in Mohr's salt solution was 42.81 g/l, 91.5% of iron was recovered in the form of $\alpha$-goethite similar to yellow grade of natural goethite. 3) When $\alpha$-goethite obtained was calcined of $500^{\circ}C$, it was turned into ${\alpha}$-ferric oxide with a redish brown colour.

질산스트론튬 수용액 표면처리에 의한 수화시멘트 복합체의 휨강도 개선

성주경,조병휘 한국도로학회 2022 한국도로학회논문집 Vol.24 No.6

PURPOSES : The effects of strontium cations on the strength of hydrated cement composites as well as the morphology and chemical composition changes of cement hydrates due to strontium treatment are investigated in this study. Subsequently, the potential of a strontiumbased aqueous solution as a near-surface treatment method for hydrated cement composites is evaluated. METHODS : To supply strontium cations to a hydrated cement composite, a 30% strontium nitrate aqueous solution was used. Cement paste (w/c = 0.4) specimens were prepared and cured in the 30% strontium nitrate aqueous solution, which allows the strontium ions to penetrate into the specimen and treat the near-surface region. Compressive and flexural strength tests were performed on both specimens treated by the strontium ions and untreated specimens cured in deionized water, and the test results were compared. To investigate the changes in the morphology and chemical compositions of the cement hydrates due to the treatment, scanning electron microscopy (SEM) and energy dispersive spectrometry (EDS) analyses were performed. RESULTS : The results of the strength tests indicate that both the compressive and flexural strengths of the specimens cured in the 30% strontium nitrate aqueous solution improved significantly compared with the specimens cured in deionized water for the same duration. In particular, the strontium nitrate aqueous solution shows greater improvement in terms of the flexural strength compared with the compressive strength. The maximum penetration depth of strontium into the hydrated cement composite is 5 mm during the first 7 d of immersion and increases to 6.5 mm during the subsequent 14 d. The SEM results show that the microstructure of the hydrated cement composite is densified by the strontium nitrate aqueous solution treatment. The EDS results show that morphology and chemical compositions of the cement hydrates are altered. This implies that the strontium cations can be combined with C–S–H and C–S–A–H phases to form new types of hydrates. CONCLUSIONS : The experimentally results show that the strength of hydrated cement composites can be improved by modifying their near-surface regions via the strontium cation penetration technique. This implies that the strontium-based aqueous solution exhibits high potential for the maintenance and rehabilitation of concrete structures.

原因未詳의 腦出血

成周慶,鄭鉉大,吳鳳煥,李長熙,黃成奎,咸印碩,朴淵默,金乘來 慶北大學校 醫科大學 1985 慶北醫大誌 Vol.26 No.3

저자등은 1980년 1월부터 1984년 6월까지 경북대학병원 신경외과에 입원된 뇌지주막하 출혈 환자중 출혈의 원인이 밝혀지지 않았던 52명의 환자를 대상으로 하여 임상적으로 분석, 관찰하였다. 원인 미상의 뇌지주막하 출혈은 충분한 검사가 시도된 환자중 22%에서 나타났다. 남, 녀의 발생비는 1.4대 1이었으며 연령층별로는 51-60세층에서 32.7%로써 가장 높은 빈도를 나타내었으며 다음이 41-50세층으로써 26.9%였다. 입원당시 신경학적 장애정도는 경도가 55.8%로써 가장 많았으며 중등도와 심도가 각각 28.8% 및 15.4%이었다. 재출혈의 빈도는 11.5%이었으며 대개가 3개월이내에 있었다. 출혈에 의한 두개내 합병증은 23.1%에서 있었으며 주로 출혈에 의한 뇌실의 확장과 혈관연측에 의한 것이었다. 입원, 치료기간은 대개 3주 미만이었으며 퇴원시 치료의 결과는 신경학적 장애가 경할수록 좋았다. 생존자는 96.2%이었으며 Good상태로의 호전은 82.7%였다. 그리고 사망률은 3.8%로 분석되었다. The authors made clinical analyses and observations on 52 patients with SAH whose causes had been unknown, admitted to Department of neurosurgery, Kyungpook National University Hospital from January 1980 through June 1984. The 52 cases accounted for 22 percent of the whole patient with SAH who has been subjected to a variety of thorough diagnostic procedures. The ratio of incidence of male to female was 1.4 to 1. Ages, 51-60, occupied 32.7 percent mostly frequent; 41-50, 26.9 percent, second highest in frequency. The breakdown in degree of neurologic disorders showed; mild-55.8 percent, moderate-28.8 percent and severe-15.4 percent. The frequency of rebleeding was 1.5 percent, most of which occured within 3 months following the first attack. Intracranial camplications due to bleeding, mostly ventricular dilatation, vasospasm, were found among 23.1 percent of the cases. The admission period was mostly 3 weeks or less. 96.2 percent of the studied cases survived and the mortality was 3.8percent. And 82.7 percent of the whole cases was recovered in good conditions.

Phenylacylphenol derivatives with anti-melanogenic activity from Stewartia pseudocamellia

성주경,Hui-Seong Kim,Yu-Mi Won,Jae-Lim Kim,Hyuk-Hwan Song,Doo-Young Kim,Sei-Ryang Oh,Hyun-Woo Cho,Jung-Hee Cho,Hyeong-Kyu Lee 대한약학회 2016 Archives of Pharmacal Research Vol.39 No.5

Three new phenylacylphenol derivatives,stewartianol (1), deoxystewartianol-40-O-arabinoglucoside(2), and stewartianol-3-O-glucoside (3), along with nineknown compounds, methylesculin (4), fraxoside (5), fraxetin(6), scopletin (7), (?)-dihydromyricetin (8), (?)-taxifolin-7-O-b-D-glucose (9), (?)-taxifolin (10), (?)-dihydrokaempferol-7-O-b-D-glucose (11), and 3-acetyl-ursolicacid (12), were isolated from the twigs of Stewartia pseudocamellia;commonly used as folk medicine in Korea. The structures of the isolated compounds were identifiedusing spectroscopic analysis, including 1D, 2D NMR, MSand compared with published data. The compounds weretested for their anti-melanogenic activity in cultured murineB16 melanoma cells. Stewartianol (1) and stewartianol-3-O-glucoside (3) showed an inhibitory effect significantlyon melanogenesis in a concentration-dependent manner.

FeSO₄의 熱分析및 Fe₃SO₄ 生成에 관한 硏究

黃龍吉,薛秀德,成周慶 東亞大學校 1975 東亞論叢 Vol.12 No.2

500℃로 하소시킨 황산제일철을 原料로 해서 鐵黑顔料를 製造하는 實驗이다. 500℃로 하소시킨 황산제일철 용액을 수소이온농도 7∼8, 反應溫度 100℃, 空氣加壓力 3氣壓, 反應時間 2時間으로 加水分解시켜본 結果 鐵黑이 90%以上 生成되었다. The formation of black iron oxide in a calcined Iron(Ⅱ) sulfate at a temperature of 500℃ was studied in the solution at a temperature of 100℃ under 3 atmospheres. When calcined Iron (Ⅱ) sulfate was hydrolyzed under 3 atmospheres in the solution with pH range 7 to 8 for 2 hour at temperature of 100℃, 90% of iron was recovered in a form of black iron oxide.

천막상부의 대형 뇌동·정맥기형 : Clinical Observation on Large Supratentorial Arteriovenous Malformations

成周慶,咸印碩,朴淵默,金乘來 慶北大學校 醫科大學 1984 慶北醫大誌 Vol.25 No.2

천막상부 대뇌에서 발생된 대형 뇌동, 정맥기형 환자 25명을 대상으로 하여 분석 관찰하였다. 남녀의 발생비는 5.4대 1이었다. 연령별 분포는 21세에서 40세까지가 전체의 60%였으며 평균 연령은 31세였다. 우측 대뇌반구에서의 발생은 60%였으면 두정엽과 전두엽에서의 발생은 각각 40%로써 가장 높은 빈도였다. 신경학적 증상과 소견은 두통이 76%로서 가장 많았으며 출혈 소견, 의식장애, 대측에 운동 및 지각 장애, 간질, 시야결손 및 잡음의 청취 순이었다. 출혈은 68%에서 있었으며 첫 출혈의 년령은 21∼30세 및 31∼40세층에서 각각 39.4%로서 가장 많았다. 40세 미만에서의 출혈은 88.2%이었다. 수술군은 52%이었으며 사망자는 없었다. 수술군에서 술후 결과는 술전에 비해 호전된 것이 69.2%었으며 변함이 없거나 악화된 것이 각각 15.4%이었다. Clinical analyses were made on 25 patients with supratentorial large arteriovenous malformations. The ratio of male to female was 5.4 to 1 in incidence. The age group, 21-40, in male took up 60% of the total cases, and the average age of the diagnosed was 31. Sixty percent of all lesions were found in the right cerebral hemisphere and 40% each in parietal and frontal lobe, which was found to be the highest incidence. The order of manifestated neurologic symptoms and signs was, headche, hemorrhagic symptoms, disturbance of consciousness, motor and sensory deficit, seizure and bruit. Sixty eight percent of the whole cases had evidence of hemorrhage and initial hemorrhage occurred at ages in such percentage as follows, 39.4% each between the ages of 21 and 30, and 30 and 40, and the percentage of hemorrhage among those bleow 40 was 88.2%. Of the 52 percent operated cases, there was no death. The results of operation were, improved 69.2%, 15.4% each in unchanged and worsened.

피크링 폐황산으로부터 안료의 제조

황용길,성주경,김재호 대한금속재료학회(대한금속학회) 1974 대한금속·재료학회지 Vol.12 No.2

피크링 폐황산중 용존된 철분을 회수하여 산화철 안료를 만들기 위한 연구이다. 우선 피크링 폐황산 (Fe 44/l, SO^(2-)₄177g/l)을 가성소다 용액으로 중화하여 수산화 제1철을 얻었다. 이것을 100℃, 3∼5 atm(送入空氣壓) 하에서 2시간동안 digestion 하였더니 다음과 같이 되었다. 1) Fe(OH)₂와 피크링 폐황산 (혼합용액의 pH7.9)이 반응시는 α-goethite가 생성되고 철의 회수율은 74% 이상이었다. 2) Fe(OH)₂와 황산제2철용액 (spent solution)이 반응시는 magnetite가 되고 90% 이상의 철이 회수되었다. 3) Fe(OH)₂(pH12 solution)만을 반응시킬시는 δ-goethite가 생성되고 90% 이상의 철이 회수되었다. 상기와 같이 생성된 α-goethite와 magnetite를 600℃에서 하소(calcination) 하였더니 모두 양호한 산화제2철 안료로 되었다. 그리고 δ-goethite를 600℃에서 하소하였더니 α-산화제2철과 magnetite의 혼합물이 생성되었다. The formation of iron oxide in a synthetic picklic sulphuric acid studied at elevated temperature and pressures. Waste picklic sulphuric acid was neutralized by adding sodium hydroxide, resulting hydrous ferrous oxide. The hydrous ferrous oxide thus formed was digested under a pressure of 3 to 5 atmospher at 100℃ for two hours. The results obtained were as follows; 1) When Fe(OH)₂ and picklic acid of pH 7.9 were reacted, 74% of iron was recovered in the form of α-goethite. 2) When Fe(OH)₂ and ferric sulphate solution (spent solution) were reacted, the yield in magnetite was better than 90%. 3) When Fe(OH)₂ of pH 12 reacted alone, δ-goethite was formed and yield was higher than 90%. When magnetite and α-goethite obtained were calcined at 600℃ it had been shown that they both could be turned into α-ferric oxide of the pigment grade, a mixture of α-ferric oxide and magnetite was also formed, when σ-goethite was calcinated at 600℃.

황산제1철의 乾濕式에 의한 酸化反應에 對한 硏究

설수덕,성주경,황용길,Soo Duk Suhl,Joo Kyung Sung,Yong Kil Whang 대한화학회 1977 대한화학회지 Vol.21 No.2

황산제 1철을 전기로내에서 하소(瑕燒)시키고, 물에 침출시켜 몰비(Fe(III)/Fe(II))를 변화시킨 각각의 수용액을 가수분해하여 산화철 생성반응을 검토하였다. 하소온도가 증가함에 따라 소광(燒鑛)중의 Fe(III)/Fe(II)비가 증가하였고, $500^{\circ}C$에서 1시간 가량 하소시킨 시료가 등몰이 됨을 알았다. 등몰로 형성된 시료를 20% 수용액으로 만든 다음 pH 7 ∼ 8로 조절하고 반응온도 $100^{\circ}C$, 가압솥내 압력 3기압 및 반응시간 2시간으로 하여 가수분해 하였더니 진한흑색의 산화철이 93% 이상 생성되었다. A study on the formation of black iron oxide was carried in differents of Fe(III), Fe(II) ion in the aqueous solution that iron(II) sulfate was calcined under various temperature and leached in water. The results obtained was follows; (1) It was found that the sample calcined in an electric muffle furnace maintained at $500^{\circ}C$ for 1 hour and leached in water was equivalent mole (Fe(III) /Fe(II) = 1) in 20% aqueous solution. (2) When the above mentioned solution was hydrolyzed at pH range of 7 to 8 for 2 hours at $100^{\circ}C$, 93% and over of iron was recovered in the form of ${\alpha}-Fe_3O_4$ with a black colour.

흰쥐 척수좌상에서 선택적 Cyclooxygenase-2 억제제인 NS-398 전처치의 효과

정현대,성주경,함인석,강구성,김정옥,김정완,박태인,손윤경 대한병리학회 2006 Journal of Pathology and Translational Medicine Vol.40 No.4

Background : Secondary spinal cord injury (SCI) that follows an initial mechanical insult can exacerbate the overall damage, limit the restorative processes and eventually lead to an increased neurological deficit. We hypothesized that selective inhibition of cyclooxygenase-2 (COX-2) may decrease the delayed cell death, and so this will contribute to decreased level of the secondary injury. Methods : The dorsal surface of the cord at the T9 level was subjected to weight drop impact using a 10 g rod. To block COX-2 activation, a selective COX-2 inhibitor (NS-398) was administered (5 mg/kg, i.p.) 15 min prior to SCI. The COX-1, COX-2, Caspase-3 and PGE2 expressions were measured by real time quantitative RT-PCR and fluorescence immunostaining. Results : Many activated caspase-3 positive cells were observed at 6 h and they increased until 72 h after SCI. The expression of COX-2 peaked at 6 h after SCI, while the COX-1 expression was unaffected. The principal cells that showed a COX-2 expression were the neurons and microglia. Pretreatment with NS-398 caused a significant decrease in the expression of prostaglandin E2 and activated caspase-3 positive cells after SCI. Conclusion : These data suggest that COX-2 is one of the main factors related with the pathologic deficits from secondary SCI.

성상신경절 차단후에 발생된 경추부의 경막외 녹농균 농양

천상욱,성주경 대한신경외과학회 1998 Journal of Korean neurosurgical society Vol.27 No.10