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난소의 저등급 악성 혼합성 Muller종양 ( 선육종 ) 1 례
정종태(JT Chung),김재찬(JC Kim),박근식(KS Park),한광수(KS Han),배국환(KH Bae) 대한산부인과학회 1995 Obstetrics & Gynecology Science Vol.38 No.2
Low grade vareiants of malignant mixed mullerian tumor of the ovary (adenosacroma) is rare neosplasm composed of benign epithelial element and malignant stromal element which is classified as homologous or heterologous based on the nature of sarcomatous element. Adenosarcomas are characterized mostly by a low malignant potential, manifested predominantly by local recurrence. Thus, this neoplasm should be distinguished from carcinosarcoma and mixed mesodermal tumor in which the epithelial as well as the stromal component is malignant and the prognosis is much more grave. We experienced a case of adenosarcoma of the ovary which was homologous type. So we present here with a brief review of the literatures.
주위 온도의 급격한 변화에 따른 압력 및 차압 전송기의 특성 변화
정종태(Jong-Tae Chung),하영철(Young-Cheol Ha),이철구(Cheol-Gu Lee),허재영(Jae-Young Her) 한국유체기계학회 2004 유체기계 연구개발 발표회 논문집 Vol.- No.-
The pressure and differential pressure(DP) transmitters are used for gas flow rate calculation on the orifice gas metering system On site, the pressure and DP transmitters are installed in a shelter to diminish the affects of environmental change such as an ambient temperature. But there has been an argument about the effectiveness of the shelter and this brought up the necessity to verify the affects of ambient temperature. These experiments were performed to verify the ambient temperature effects as observing the output of transmitters when the ambient temperature were changed from -30 ℃ to 50 ℃. The results showed that the most of transmitters were operated in the spec range of performance criteria presented by manufacturer but the rapid change of ambient temperature could cause the larger measurement error for the DP transmitter of low span than others. Therefore the pressure and DP transmitters need to be operated and controlled within the proper range of ambient temperature.
정종태(Jong-Tae Chung),하영철(Young-Cheol Ha),이철구(Cheol-Gu Lee),허재영(Jae-Young Her) 한국유체기계학회 2002 유체기계 연구개발 발표회 논문집 Vol.- No.-
Orifice meter is the most widely used flowmeter in custody transfer between KOGAS and city gas companies. Absolute pressure value is needed to calculate the gas flow of orifice metering system, but the gauge pressure transmitters are mainly used in the field. In case that the gauge pressure transmitters are used, the fixed value as standard atmospheric pressure(101.325㎪) is applied for the absolute pressure value. The real, local atmospheric pressures of each metering station are different from the standard condition as the altitude and weather conditions. In this study the flow calculation errors were quantitatively analyzed through examining the atmospheric pressures of 60 stations of KOGAS. The data for analysis are such like the time data of supplied gas amount, the altitude of each metering station, the time data of atmospheric pressures and altitudes of each weather observatory. The results showed that the local atmospheric pressures were different from the standard value and the gas flow calculation errors were distributed between -0.024% ~ 0.025% based on the supplied gas amount in the year 1999 and 2000.
Chong Tae Chung(鄭鍾台),Bong Ho Choe(崔鳳鎬),Hee Bong Lee(李喜鳳),Won Ku Lee(李元九) 한국육종학회 1997 한국육종학회지 Vol.29 No.1
This study was carried out to clarify the inheritance of the kernel color of Korean local maize lines, especially on the the mechanisms of aleurone color inhibition observed in Chilbo waxy line and that of mottled color when Nulupzae was crossed with other lines, and that the color reappearance when two white colored lines were crossed. Nine local (flint) inbred lines, one collection which was classified as an ecotype by Choe in 1991, and one alien line were used to produce F₁, test crosses and F₂ seeds. The mottled kernel color observed in the combination of Danyang/Yunghee was determined by R and r alleles. The color inhibition was due to the inhibition gene (probably C1-I) presented in the Chilbo white line. The genotype for the purple dots on white aleurone tissue in a kernel, that appeares purple inbred lines such as Yunghee were crossed with Chilbo line, was C1C1C1-IRRR. The dilute and pale kernels in the aleurone tissue in the combinations crossed with Chilbo line were due to incomplete epistasis of C1-I for R gene. When Jewon white line was crossed with Nulupzae collection which has deep purple aleurone tissue, the depth of color in F₁ seeds was considerably various. The dark colored kernels in F₁ seeds showed extraordinary inheritance for segregation ratio and color pattern in comparison with light colored kernels. When two colorless inbreds were crossed the purple colored F₁ seeds, must be due to the complementary gene effects. Waesungri line crossed with FR805, P1213749 and IK/LE lines showed the segregation ratio of 27:37 in F₂, that indicated complementary reaction from three alleles concerning color determination.
혐기바이오비드를 이용한 UASB 반응기의 제지폐수 처리특성
정종태 ( Jong-tai Jung ),한상윤 ( Sang-yun Han ),정은호 ( Eun-ho Chung ) 한국수처리학회 2018 한국수처리학회지 Vol.26 No.3
In this study, Anaerobic beads with 0.85~1.45 ㎜ diameters were produced by direct injection and mixing(100 rpm for 3 minutes) of anaerobic sludge 200 ㎖(average MLSS concentration 38,000 ㎎/L) and 1.5% sodium alginate solution. The paper wastewater treatment of the sequencing batch reactor with anaerobic biobeads could achieve about 85% COD removal after 6 days. With this remarkable results of this study, it can apply to the way of the removal efficiency stabilization and starting up of the UASB reactor because it didn’t happen the sludge rising and washing out although the maximum upflow velocity increased to 0.26 m/hr.
도시하수 2차 처리수의 인 제거를 위한 일체형 직접여과시스템의 처리특성 연구
정종태 ( Jong-tai Jung ),정은호 ( Eun-ho Chung ),조용현 ( Yong-hyun Cho ) 한국환경기술학회 2015 한국환경기술학회지 Vol.16 No.3
본 연구에서 도시하수 2차 처리수의 인 제거를 위한 일체형 직접여과시스템의 pilot-plant를 운전할 결과 다음과 같은 결론을 얻을 수 있었다. Mode A, B, C의 운전조건에서 PO<sub>4</sub>-P, T-P 제거율은 각각 Mode A에서 75.49~78.35%, 75.20~78.29%, Mode B에서 80.21~84.16%, 75.81~ 81.45%, Mode C에서 77.89~80.61%, 74.22~84.68%로 높은 제거율이 나타났다. 또한 교반강도 감소에 따라 각각의 처리수 T-P 평균농도는 0.3 mg/L, 0.26 mg/L, 0.29 mg/L로 유출되어 이론적 최적 설계 교반강도보다 낮은 Mode B에서 T-P 처리효율이 가장 높게 나타났다. 따라서 본 처리시스템에서 최적 교반강도(G값)은 Mode B(G값 하부 38.97~48.35S<sup>-1</sup>, 중부 21.25~26.78 S<sup>-1</sup>, 상부 10.17~12.81 S<sup>-1</sup>)로 판단된다. 최적운전 조건에서 Pilot plant 운전결과 탁도제거율 64.63~ 96.39(평균 80.41)%로 높은 제거율을 보였다. 반면에 색도는 제거율 30.49~51.81(평균 40.48)%로 다소 낮은 제거율을 보였다. PO<sub>4</sub>-P, T-P는 각각 2.96~3.54 mg/L, 3.39~3.62 mg/L로 유입되었으며 각각의 처리수 농도 및 평균 제거율은 0.11~0.20 mg/L, 95.06%, 0.18~0.25 mg/L, 93.96%로 인 제거율은 안정적이면서 높은 제거율은 나타내었다. In this study, the following conclusions were obtained with the results of operate a pilot-plant of the integrated direct filtration system for phosphorus removal from secondary effluent of municipal wasterwater treatment plant. On the operating conditions of Mode A, B and C, the high PO<sub>4</sub>-P, T-P removal efficiency was 75.49~78.35%, 75.20~78.29% in Mode A, 80.21~84.16%, 75.81~81.45% in Mode B, 77.89~80.61%, 74.22~84.68% in Mode C respectively. And the average T-P concentrations were 0.3 mg/L, 0.26 mg/L and 0.29 mg/L depending on the reduction of mixing intensity, it showed that the highest removal efficiency was in Mode B which was lower than the theoretical optimum design mixing intensity. Therefore, the optimal mixing intensity(G value) in integrated direct filtration system was Mode B(G value : 38.97~48.35 S<sup>-1</sup> in bottom area, 21.25~26.78 S<sup>-1</sup> in middle area, 10.17~12.81 S<sup>-1</sup> in upper area). According to the pilot-plant operation results in optimal conditions, turbidity removal efficiency highly showed from 64.63 to 96.39 (average 80.41%). On the other hand, the color removal efficiency was somewhat lower removal efficiency (average 40.48%). The influent concentrations of PO<sub>4</sub>-P, T-P were 2.96~3.54 mg/L, 3.39~3.62 mg/L, the effluent concentrations and average removal efficiency were 0.11~0.20 mg/L, 95.06%, 0.18~0.25 mg/L, 93.96% that showed the phosphorus removal efficiency was stable and high in this system.