혐기-무산소-호기공정에 의한 도시하수의 질소·인제거에 관한 연구

양용운,김재현 啓明專門大學 産業開發硏究所 1999 啓明硏究論叢 Vol.17 No.2

본 연구는 질소와 인을 동시에 제거할 수 있는 생물학적 질소-인제거 공정인 혐기-무산소-호기공정을 산업폐수가 포함된 도시하수에 적용한 경우의 유기물 및 질소·인의 제거특성에 대하여 조사하였다. 원수의 특성은 유기물의 농도가 CODCr 120∼230mg/ι로 평균 178mg/ι을 나타내었으나 무기성 탄소원의 농도가 매우 높았으며 이에 따라 생물학적 제거 가능한 유기물의 비율은 낮아 충분한 질산화와 탈질화가 이루어지지 않았다. CODCr/NH_(3)-N이 평균 10이상으로 높았지만 무기성 탄소원이 높아 탈질에 필요한 추가적인 에너지원의 투입을 고려해야 하며, 또한 alkalinity/NH_(3)-N의 비가 2.3정도로 낮게 나타나 완전한 질산화를 위해서는 alkalinity의 공급이 필요한 것으로 조사되었다. 유기물에 대한 평균 제거율은 BOD 84%, CODCr 53%를 나타내었으며, NH_(3)-N의 제거율은 평균 76%이었고 T-N의 제거율은 60%이었다. 그리고 T-P 제거율은 50%정도를 나타내었다. The anaerobic-anoxic-aerobic process was used for biological nitrogen and phosphorus removal of municipal sewage. The CODCr concentration of municipal sewage was 120∼230mg/ι and its average CODCr concentration was 178mg/ι. But because of the high inorganic concentration of municipal sewage, the biological nitrification and denitrification were not accomplished successfully. The alkalinity/NH_(3)-N was 2.3 and under those conditions the additional carbon source and lime should be added The removal efficiency BOD and CODCr were 84% and 53% respectively. The removal efficiencies T-N and T-P were 60% and 50% respectively.

3차원 분석법의 적용 : DLT 방식 DLT(Dircet Linear Transformation) Method

서국웅,윤양진,김용재,이훈식 釜山大學校 附設 體育科學硏究所 1995 體育科學硏究所 論文集 Vol.11 No.-

The purpose of this study was to maximize the application of 3-d cine-photogrammetry, in which the DLT(Direct Linear Transformation) technique is used, by searching for some practical methods of application, and to develop a comprehensive package of programs of 3-d analyses. The raw digitized coordinate date were processed by a personal computer with the developed package. Two kinds of control-point-frame(pyramid, range pole), and a synchro-timer were designed and utilized in the study. Two theodolites were used of the angle measurements of the control points. The conclusions are as follows 1. Range pole system was much superior to control point pyramid system in the applicability of the control point frame. There was no significant difference between the calculated average length using the range pole system and the actual length of the rotation rod. 2. The automatic numerical aligning technique for the digitizing apparatus reduced the RMS of residuals of the control point space coodinates. But the optional distortion was not corrected by the correction model. 3. The application of the synchro-timer which was designed and used for the study was proved. But the standard deviation of the time interval between adjacent frames was affected by the quality of the image. 4. As a result of adopting unique of calculations of the control point space coordinates, the ratio of the power of the control point reconstruction to the size of the control point frame was reduced greatly

히스테리시스 효과의 컴퓨터 시뮬레이션

류연국,양계준,한운동,박용만 충주대 산업과학기술연구소 1993 産業科學論文集 Vol.1 No.-

Usefulness of recent versions of PSPICE, personal computer implementation of the SPICE, circuit simulation computer software rogram is demonsterated in simulation of the hysteresis loops magnetic materials. In order to model the hysteresis loop of a particular magnetic core's B-H characteristics, the values of five parameters, which affect the shape of the hysteresis loops, must be established. There is no efficient procedure for selecting the values of five parameters. Neither the PSPICE instruction munual nor any current books or papers address this problem. This paper presents a method for illustrating the effect that each parameter has on the shape of the hysteresis loop.

배자기 중 인간 사지의 형태발생에 관한 연구

박형우,민양기,심용운 대한해부학회 1992 Anatomy & Cell Biology Vol.25 No.1

폐수처리 공정 중 휘발성 유기화합물의 분석에 관한 연구

김영두,양용운,김재현 啓明專門大學 産業開發硏究所 2001 啓明硏究論叢 Vol.19 No.1

D염색단지 폐수처리장 유입원수 및 집수조, 1차 화학처리수, 2차 생물처리수 및 최종방류수의 VOC를 분석한 결과 dichloromethane, chloroform, toluene 등이 검출되었으며, 유입원수에서는 각각 45.8㎍/ℓ, 40.8㎍/ℓ, 24.5㎍/ℓ가 검출되었다. VOC성분은 대부분 집수조 및 cooling tower공정에서 휘발에 의해 제거되었고. 최종방류수의 dichloromethane, chloroform, toluene은 0.37㎍/ℓ, 0.29㎍/ℓ, 0.46㎍/ℓ를 나타내었다. 그리고 원수에 함유된 VOC 농도는 여름철이 겨울철에 비해 높았고, 제거효율은 여름철이 더 우수하였다. This study was conducted to investigate VOCs concentration of influent wastewater, storage tank, 1st chemical treatment effluent, 2nd biological treatment effluent and final effluent in D dyeing complex wastewater treatment plant for one year from July 1999 to June 2000. As a result, the small amount of VOCs such as dichloromethane, chloroform, toluene were detected and concentration of dichloromethane, chloroform, toluene in influent wastewater were 45.8㎍/ℓ, 40.8㎍/ℓ and 24.5㎍/ℓ respectively. The VOCs such as dichloromethane, chloroform, toluene were removed by volatilization in storage tank and cooling tower process. After wastewater treatment process, concentration of dichloromethane, chloroform, toluene in final effluent were 0.37㎍/ℓ, 0.29㎍/ℓ and 0.46㎍/ℓ, respectively. In addition, seasonal variation of VOCs concentration in influent wastewater showed higher in the summer than winter, but removal efficiencies were excellent in the summer.

염색공업단지 폐수처리장의 유입폐수 특성

박영규,이철희,양용운 嶺南大學校 環境問題硏究所 1996 環境硏究 Vol.15 No.2

요 약 문대구 D염색공단의 대표적인 염색가공업체에서 유출되는 폐수와 공단처리장에 유입되는 1 년간(1994. 1-1994. 12) 종합폐수의 수질 및 오염부하변동을 조사하였다.Polyester감량업체의 연평균 BOD 3,112㎎/ℓ , CODMn l,402㎎/ℓ이고, COD/BOD비는 0.34이 였으며, 면 T/C업체의 연평균 BOD 885㎎/ℓ, CODMn 676㎎/ℓ이고, COD/BOD비는 0.76이 였 다. (그리고 Nylon업체의 연평균 BOD 582㎎/ℓ, CODMn 376㎎/ℓ이고, COD/BOD비는 0.65 이였으며, 나염 관련업체의 COD/BOD비는 1.18이였다. )공동폐수처리장에 유입되는 유량의 78%가 50,000 ㎡/day∼60,000㎡/day이였으며, 연평균 수온은 35tC, pH는 11.6∼12.9 범위이고, 부유물질은 92㎎/ℓ 이였다. 공동폐수처리장에 유입 되는 연평균 BOD 및 COD Mn은 각각 1,824mg/ℓ, 760mg/ℓ이고, COD/BOD비는 0.42이였다. 연평균 BOD 및 CODMn 부하량은 각각 107,616kg/day, 45,O17kg/day이고, 이중 부하량 분포 에서 BOD는 80,000∼90,000kg/day 범위가 약 31 %, CODMn은 45,000∼50,000 kg/day 범위가 약 63%로 가장 많은 빈포를 차지하였다. 전체적으로 BOD 부하량는 60,000∼110,000kg/ day 분포가 약 81 %, CODMn 부하량은 40,000∼55,000 kg/day 분포가 약 92%이 였다. Abstract The wastewater discharged from several major dyeing processing industries and the mixed influent wastewater in Taegu D dyeing industrial complex were investigated for a year (1994. 1 ∼ 1994. 12) in order to evaluate the fluctuation of pollutant 1oadings.Average wastewater qualities from the polyester processing were BOD 3,112 mg/ℓ and CODMn l,042 mg/ℓ and those from the cotton T/C processing were BOD 885 mg/ℓ , CODMnMn 676 mg/ℓ and COD/BOD ratios were 0.34 and 0.76, respectively. An addition, average wastewater qualities from the pylolyester processing were BOD 3,112 mg/ℓand CODMn 736 mg/ℓ and COD/BOD Fatio was 1.18 from the printing processing,Flow rate of 78 % at dyeing industrial complex wastewater treatnlent plant was found to be on the range of 50,000㎡/day∼ 60,000㎡/day and the average mixed wastewater qualities were characterized as water tempereture 35℃, pH 12.1, suspended solid 92 mg/ℓ , BOD 1,824 mg/ℓ and CODMn 760 ㎎/ℓ.Average BOD and CODMn loadings were l07,616 kg/day,45,017 kg/day, respectively. About 31% of daily BOD loadings fell on the range of 80,000∼90,000 kg/day and about 63% COD Mn 1oadings did on the range of 45,000∼ 50,000 kg/day, which showed the most frequent range. And about 81 % of total BOD loading was found from 60,000 to 110,000 kg/day and about 92% of total CODMn loading ranged from 40,000 to 55,000 kg/day.

Design and Implementation of Internal Multi-Band Monopole Antenna for Mobile Phones

Yang, Woon-Geun,Cai, Ling Zhi,Yang, Cheol-Yong Institute of Korean Electrical and Electronics Eng 2011 전기전자학회논문지 Vol.15 No.4

In this paper, we proposed an internal multi-band monopole antenna for mobile phone that can be used for smart phones. The proposed antenna has a small volume of $38{\times}8.5{\times}5\;mm^3$, ground size is $100{\times}60\;mm^2$, and covers the GSM900 (Global System for Mobile communications : 880-960 MHz), DCS (Digital Communications System : 1710-1880 MHz), K-PCS (Korea-Personal Communications Service : 1750-1870 MHz), US-PCS (US Personal Communications Service : 1850-1990 MHz), Bluetooth (2400-2483 MHz), Wibro (2300-2390 MHz) and WLAN (Wireless Local Area Network : 2400-2483.5 MHz) bands. The measured peak gains of the implemented antenna are 1.15 dBi at 920 MHz, 3.58 dBi at 1795 MHz, 3.46 dBi at 1810 MHz, 2.91 dBi at 1920 MHz, 5.18 dBi at 2345 MHz, 3.37 dBi at 2442 MHz.

Genetic Analysis and Phenotypic Performance over Multi-generations for Resveratrol Rice

Yang Qin,Hong-Il Ahn,Yong-Woon Jeong,Myung-Ho Lim,Soo-Yeun Park,Jin-Hyoung Lee,Kong-Sik Shin,Hee-Jong Woo,Bum-Kyu Lee,So-Hyeon Baek,Soon-Ki Park,Soon-Jong Kweon 한국육종학회 2014 한국육종학회 심포지엄 Vol.2014 No.07

Resveratrol rice Iksan526 was developed by overexpession of T-DNA (RB::P-Ubi::RS::T-NOS::P-35S::PAT::T-35S::LB) in rice variety Dongjin. To confirm one locus insertion of T-DNAs, Mendelian genetic analysis was carried out on selection marker bar gene and objective RS gene separately by using a F2 population derived from a cross of Dongjin/Iksan526 (T6). A total of 450 four-leaf-old plants from F2 population were treated by 0.3% basta, and a phenotypic separation ratio of 3:1 (321 survival: 129 dead, p>0.90) complied with Mendelian inheritance indicating one locus insertion of bar gene. Genotypic separation was analyzed by using PCR with specific primers for 300 plants, which were selected from 321 survival plants after phenotypic separation. Results revealed a ratio 1:2 of homologous to heterozygous (92:208, p>0.90), which further confirmed one locus insertion of RS gene. In addition, comparison on agronomic traits and resveratrol contents between transgenic rice and the donor variety were launched to evaluate the phenotypic performance over multi-generations (years).

영상 전송용 단일 급전 원형 편파 사각 패치 안테나 설계 및 구현

양철용(Cheol Yong Yang),김우찬(Woo Chan Kim),차이링즈(Cai Ling Zhi),이성하(Seong Ha Lee),양운근(Woon Geun Yang) 한국통신학회 2011 한국통신학회 학술대회논문집 Vol.2011 No.6

External Validation of the eCura System for Undifferentiated-Type Early Gastric Cancer with Noncurative Endoscopic Resection

Yang Hyo-Joon,Kim Young-Il,Ahn Ji Yong,Choi Kee Don,Kim Sang Gyun,Jeon Seong Woo,Kim Jie-Hyun,Shin Sung Kwan,Lee Hyuk,Lee Wan-Sik,Kim Gwang Ha,Park Jae Myung,Shin Woon Geon,Choi Il Ju 거트앤리버 소화기연관학회협의회 2023 Gut and Liver Vol.17 No.4

Background/Aims: The eCura system, a scoring model for stratifying the lymph node metastasis risk after noncurative endoscopic resection for early gastric cancer (EGC), has been internally validated, primarily for differentiated-type EGC. We aimed to externally validate this model for undifferentiated-type EGC. Methods: This multicenter, retrospective cohort study included 634 patients who underwent additional surgery (radical surgery group, n=270) or were followed up without additional treatment (no additional treatment group, n=364) after noncurative endoscopic resection for undifferentiated- type EGC between 2005 and 2015. The lymph node metastasis and survival rates were compared according to the risk categories. Results: For the radical surgery group, the lymph node metastasis rates were 2.6%, 10.9%, and 14.8% for the low-, intermediate-, and high-risk eCura categories, respectively (p for trend=0.003). For the low-, intermediate-, and high-risk categories in the no additional treatment group, the overall survival (92.7%, 68.9%, and 80.0% at 5 years, respectively, p<0.001) and cancer-specific survival rates (99.7%, 94.7%, and 80.0% at 5 years, respectively, p<0.001) differed significantly. In the multivariate analysis, the hazard ratios (95% confidence interval) in the no additional treatment group relative to the radical surgery group were 3.18 (1.41 to 7.17; p=0.005) for overall mortality and 2.60 (0.46 to 14.66; p=0.280) for cancer-specific mortality in the intermediate-tohigh risk category. No such differences were noted in the low-risk category. Conclusions: The eCura system can be applied to undifferentiated-type EGC. Close follow-up without additional treatment might be considered for low-risk patients, while additional surgery is recommended for intermediate- and high-risk patients.