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폴리에틸렌글리콜 상이동 촉매상에서 니트로벤젠과 Fe(CO)<sub>5</sub>로부터의 아닐린 합성
오소영,천승우,박대원,박상욱,신정호,Oh, So-Young,Chun, Sung-Woo,Park, Dae-Won,Park, Sang-Wook,Shin, Jung-Ho 한국공업화학회 1992 공업화학 Vol.3 No.4
Ironpentacarbonyl에 의한 니트로벤젠의 환원반응에 PEG를 상이동 촉매로 사용한 결과 상온에서 90% 이상의 아닐린 수율을 얻을 수 있었다. 니트로벤젠의 반응속도는 PEG의 사슬길이와 결합점의 수에 의존하였으며 NaOH의 농도가 높고 용매의 극성이 커질수록 증가하였다. 그러나 아닐린의 수율은 NaOH농도가 2N일때 최대였으며 그 이상의 농도에서는 감소하였다 PEG phase transfer catalyzed reduction of nitrobenzene with $Fe(CO)_5$ afforded aniline up to over 50% yield al room temperature. The reaction rate of nitrobenzene was dependent on the chain length and number of binding sites of PEG, and it was increased with the concentration of NaOH and solvent polarity. But the yield of aniline was maximum) with 2N NaOH solution and it was decreased at higher concentrations.
지방모세포종의 세침흡인 세포학적 소견 - 2예 보고 -
오소영,정명자,문우성,강명재,이동근,Oh, So-Yeong,Chung, Myoung-Ja,Moon, Woo-Sung,Kang, Myoung-Jae,Lee, Dong-Geun 대한세포병리학회 1998 대한세포병리학회지 Vol.9 No.2
Lipoblastoma is a rare benign neoplasm occurring exclusively in children below the age of three years. It affects chiefly the upper and lower extremities, and less commonly head and neck area, trunk, mediastinum, mesentery, and retroperitoneum. We present two cases of lipoblastoma occurring in the mediastinum of a 21-month-old boy and in the back of a 15-month-old boy. The characteristic features of Fine needle aspiration cytology smears were the presence of immature fat cells in the form of spindle-shaped cells, stellate cells and vacuolated lipoblasts along with lipocytes against a myxomatous background. Two tumors were histologically confirmed to be lipoblastomas. Lipoblastoma can be cytologically diagnosed by considering the cytologic findings and the age of the patient.
오소영,윤덕훈,남기웅,김원일,이문행 한국토양비료학회 2014 한국토양비료학회지 Vol.47 No.6
The purpose of this study was to analyze microbial hazards for cultivation environments and personal hygiene ofstrawberry and tomato farms at the growth and harvesting stage. Samples were collected from thirty strawberryfarms and forty tomato farms located in Korea and tested for Staphylococcus aureus and Bacillus cereus. Toinvestigate the change in the distribution of the S. aureus and B. cereus, a total of 4,284 samples including air born,soil or medium, mulching film, harvest basket, groves and irrigation water etc. were collected from eightstrawberry farms and nine tomato farms for one year. As a result, total S. aureus and B. cereus in all samples weredetected. Among the total bacteria of strawberry farms, S. aureus (glove: 0~2.1 Log CFU/100 cm2, harvest basket:0~3.0 Log CFU/100 cm2, soil or culture media: 0~4.1 Log CFU/g, mulching film: 0~3.8 Log CFU/100 cm2), B. cereus (glove: 0~2.8 Log CFU/100 cm2, harvest basket: 0~4.8 Log CFU/100 cm2, soil or culture media: 0~5.3 LogCFU/g, mulching film: 0~4.5 Log CFU/100 cm2) were detected in all samples. The total bacteria of tomato farms,S. aureus (glove: 0~4.0 Log CFU/100 cm2, harvest basket: 0~5.0 Log CFU/100 cm2, soil or culture media: 0~6.1Log CFU/g, mulching film: 0~4.0 Log CFU/100 cm2), B. cereus (glove: 0~4.0 Log CFU/100 cm2, harvest basket:0~4.3 Log CFU/100 cm2, soil or culture media: 0~5.9 Log CFU/g, mulching film: 0~4.7 Log CFU/100 cm2) weredetected in all samples. The contamination of S. aureus and B. cereus were detected in soil, mulching film andharvest basket from planting until harvest to processing, with the highest count recorded from the soil. But S. aureus and B. cereus were not detected in irrigation water samples. The incidence of S. aureus and B. cereus inhydroponics culture farm were less than those in soil culture. The amount of S. aureus and B. cereus detected instrawberry and tomato farms were less than the minimum amount required to produce a toxin that induces foodpoisoning. In this way, the degree of contamination of food poisoning bacteria was lower in the productionenvironment of the Korea strawberry and tomato, but problems can be caused by post-harvest management method. These results will be used as fundamental data to create a manual for sanitary agricultural environment management,and post-harvest management should be performed to reduce the contamination of hazardous microorganisms.
오소영,정명자,이동근 의과학연구소 1996 全北醫大論文集 Vol.20 No.2
Papillary and solid epithelial neoplasm of pancreas is a tumor recently described in young women. Two cases of the papillary and solid epithelial neoplasm of pancreas in young female(16, 27 years old respectively) are presented. Chief complaints were only mass on epigastrium. Well circumscribed masses were noted in body(case 1) and head(case 2) of the pancreas, measuring 10 and 6cm in diameters respectively, which were simply excised. Cut surfaces showed fibrous capsules containing solid mass with partially cystic areas filled by hemorrhage and necrosis. Evidence of metastasis was not noted in both cases. Microscopically, they are composed of two distinct papillary and solid patterns. (Key words : Papillary and solid epithelial neoplasm, Pancreas)
PEG / γ- Al2O3 상이동 촉매상에서 니트로벤젠과 Fe(CO)5 로부터의 아닐린 합성
오소영,이화수,박대원,박상욱,신정호 ( So Young Oh,Hwa Su Lee,Dae Won Park,Sang Wook Park,Jung Ho Shin ) 한국공업화학회 1993 공업화학 Vol.4 No.1
γ-Al_2O_3, γ-Al_2O_3, SiO_2, TiO_2 등에 고정화된 폴리에틸렌글리콜을 Fe(CO)_5에 의한 니트로벤젠의 상온 환원반응에 상이동 촉매로 사용하였다. 고정화된 PEG의 몰수는 담체의 비표면적에 따라 증가하였고 PEG/γ-Al_2O_3가 가장 좋은 활성을 나타내었다. PEG의 사슬길이가 길고 NaOH농도가 높을수록 반응속도가 증가하였다. 적외선분광기를 이용하여 반응기구에 대한 고찰도 함께 실시하였으며 폴리에틸렌글리콜 상이동 촉매는 본 반응의 활성물질로 알려진 HFe(CO)_4,-이온의 생성과 이의 유기상으로의 이동을 촉진시키는 것으로 판단되었다. Immobilized polyethylene glycols onto metal oxides such as γ-A1_2O_3, α-Al_2O_3, SiO_2 and TiO_2 were used as phase transfer catalysts for the room temperature synthesis of aniline from nitrobenzene and ironpentacarbonyl. The amount of attached PEG molecules increased with specific surface area of metal oxides. Among the immobilized catalysts tested PEG/γ-Al_2O_3 showed the highest activity. The reaction rate increased with the chain length of PEG molecules and the aqueous NaOH concentration. Mechanistic study carried out using infrared spectrometer revealed that the role of PEG was to increase the formation of HFe(CO)_4^- ion, which is known as active species, and its movement from aqueous to organic phase.
재배방법별 주요엽채류의 생산단계에서 세척단계까지 미생물상의 변화
오소영,남기웅,윤덕훈 한국식품위생안전성학회 2018 한국식품위생안전성학회지 Vol.33 No.1
A few authors have already investigated microbial contamination of leafy vegetables in distribution condition and examined the effect of temperature abuse on microbial safety or product quality. But this study analyzed proliferation of indicator microorganisms and food poisoning bacteria in real situation in Korean agroindustry and investigated washing effect of micobial contamination on leaf surface. Leafy vegetables were found to be contaminated with aerobic bacteria at 0.1~0.32 × 103 CFU/g. Staphylococcus aureus and Bacillus cereus were detected in leafy vegetables at 0~0.54 × 103 CFU/g. However, Salmonella spp., Coliforms, Clostridium spp. and Listeria spp. were not detected in any samples. Indicator microorganisms and food poisoning bacteria on leafy vegetables increased at room temperature when simulatively distributed condition. After clean-up, the indicator microorganisms and food poisoning bacteria of kimchi cabbage, lettuce and perilla leaf were decreased to a very low level. This study suggests that it is necessary to improve the level of hygiene management such as use of cold chain system and hygiene management of transport tools during the distribution process for fresh leafy vegetables.