소규모 하수처리를 위한 파일럿 규모 이중슬러지 KNR^® (Kwon's nutrient removal) 시스템의 영얌염류 제거성능 평가

안진영,권중천,김윤학,정유훈,김두언,유선호,김병우,An, Jin-Young,Kwon, Joong-Chun,Kim, Yun-Hak,Jeng, Yoo-Hoon,Kim, Doo-Eon,Ryu, Sun-Ho,Kim, Byung-Woo 한국청정기술학회 2006 청정기술 Vol.12 No.2

본 연구에서 소규모 하수고도처리를 위한 이중슬러지(Dual sludge) $KNR^{(R)}$ (Kwon's nutrient removal) 시스템이 개발되었다. $KNR^{(R)}$ 시스템은 부유성장식 탈질미생물과 부착성장식 질산화미생물을 분리시킨 이중슬러지 공정으로 최초침전조, 혐기조, 무산소조, 농축조의 복합기능을 수행하는 UMBR (Upflow multi-layer bioreactor)과 펠렛형 담체가 충진된 호기성 담체조로 구성되어 있다. 소규모 하수처리시 본 개발공정의 안정성과 처리성능을 평가하기 위해 처리용량 $50m^3/d$ 규모의 파일럿 플랜트를 고도처리 공정으로 개선공사 중인 처리용량 $50m^3/d$ 규모의 실제 소규모 마을하수처리장에 적용하였다. UMBR과 담체조의 체류시간은 각각 4.7 h와 7.2h이었으며, 반응조 수온은 $18.1{\sim}28.1^{\circ}C$이었다. 유입 하수량과 유입수의 BOD/N의 변동폭이 컸음에도 불구하고 파일럿 플랜트는 안정된 처리성능을 보였다. 전체 실험기간 중 처리수의 $COD_{cr}$, $COD_{Mn}$, $BOD_5$, TN, TP의 평균 농도는 11.0 mg/L, 8.8 mg/L, 4.2 mg/L, 3.5 mg/L, 9.8 mg/L, 0.87/0.17 mg/L (poly aluminium chloride(PAC) 투입/미투입)이었으며, 제거율을 각각 95.3%, 87.6%, 96.3%, 96.5%, 68.2%, 55.4/90.3% 이었다. 잉여슬러지 발생량은 $A_2O$와 Bardenpho 등과 같은 단일슬러지를 이용하는 고도처리공정과 비교시 약 1.9~3.8배 낮은 $0.026kg-DS/m^3$ and 0.220 kg-DS/kg-BOD로 나타났다. A simple dual sludge process, called as $KNR^{(R)}$ (Kwon's Nutrient Removal) system, was developed for small sewage treatment. It is a hybrid system that consists of an UMBR (Upflow multi-layer bioreactor) as anaerobic and anoxic reactor with suspended denitrifier and a post aerobic biofilm reactor, filled with pellet-like media, with attached nitrifier. To evaluate the stability and performance of this system for small sewage treatment, the pilot-scale $KNR^{(R)}$ plant with a treatment capacity of $50m^3/d$ was practically applied to the actual sewage treatment plant, which was under retrofit construction during pilot plant operation, with a capacity of $50m^3/d$ in a small rural community. The HRTs of a UMBR and a post aerobic biofilm reactor were about 4.7 h and 7.2 h, respectively. The temperature in the reactor varied from $18.1^{\circ}C$ to $28.1^{\circ}C$. The pilot plant showed stable performance even though the pilot plant had been the severe fluctuation of influent flow rate and BOD/N ratio. During a whole period of this study, average concentrations of $COD_{cr}$, $COD_{Mn}$, $BOD_5$, TN, and TP in the final effluent obtained from this system were 11.0 mg/L, 8.8 mg/L, 4.2 mg/L, 3.5 mg/L, 9.8 mg/L, and 0.87/0.17 mg/L (with/without poly aluminium chloride(PAC)), which corresponded to a removal efficiency of 95.3%, 87.6%, 96.3%, 96.5%, 68.2%, and 55.4/90.3%, respectively. Excess sludge production rates were $0.026kg-DS/m^3$-sewage and 0.220 kg-DS/kg-BOD lower 1.9 to 3.8 times than those in activated sludge based system such as $A_2O$ and Bardenpho.

Sausage의 品質保存에 미치는 r-線 照射의 影響

權重浩,尹衡植 COLLEGE OF AGRICULTURE KYUNGPOOK NATIONAL UNIVERSI 1984 慶北大農學誌 Vol.2 No.-

Effect of gamma irradiation on the shelf-life of commercial Sausage and its quality were investigated during 8 weeks storage at 30℃ following 3 to 8 kGy irradiation. Total baectrial count of unirradiated group was proliferated from 7.9X10^(3) per gram of sample to 10^(6) after 4 weeks storage, but that of irradiated group was propagated to same level after 5 to 6 weeks storage and the growth of coliform group was shown to be negative. The freshness of stored sausage was better in irradiated group than unirradiated one and the changes in components concerned with the quality of sausage was almost same between unirradiated and irradiated groups. Textural parameters of sausage after 4 weeks storage were not remarkably changed according to irradiation dose, and discoloration of irradiated sample at high dose was recognized by the mechanical measurement.

纖維强化 나이론의 機械的 性質

權重錄,李東鎬 경북대학교 공과대학 1987 工大硏究誌 Vol.16 No.-

Nylon resin reinforced with glass fiber or carbon fiber (which were surface-treated with silane as coupling agents to improve adhesion with polymer) was made according to weight percentage of glass or carbon fiber from 10 to 50 or 10 to 40 respectively. And the fiber reinforced composites were molded into three kinds of specimen for the purpose of the measurement of mechanical properties. The items of the measured properties were melt index, impact strength, flexural strength, hardness, tensile strength, elongation and heat deflection temperatures. The comparison of the mechanical properties of glass fiber reinforced composites with carbon fiber reforced ones was performed in order to clarify the differences between their respective mechanical properties. As the viscosity of the nylon and the amount of fiber increased, melt index decreased. In the most of the mechanical properties, carbon fiber-reinforced composites revealed better results than glass fiber-reinforced ones except melt index.

소매유통업의 CRM 도입성과에 관한 연구 : CRM Scorecard를 이용한 CRM 성과측정에 관하여

권중호 남서울대학교 2018 남서울대학교 논문집 Vol.24 No.-

야간 혈압 변동과 좌심실 질량, 이완기 기능 및 QT 간격과의 관계

김수중,이병호,손일석,강흥선,조정휘,김권삼,송정상,배종화 대한간질학회 2003 대한간질학회지 Vol.9 No.1

멸치젓의 呈味成分

李應昊,金世權,錢重均,金洙賢,金程均 釜山水産大學校 1982 釜山水産大學 硏究報告 Vol.22 No.1

멸치젓의 呈味成分에 관한 기초자료를 얻고자 생멸치와 이를 原料로 하여 제조된 멸치젓 중의 核酸關聯物質, 유리아미노산, betaine, TMAO, TMA 및 總creatinine을 分析하였다. 核酸關聯物質 중 생멸치에서는 IMP가 乾物量基準으로 2.8 μmole/g로 가장 많았으나 멸치젓에서는 hypoxanthine이 4.2 μmole/g으로 가장 많았고 , ATP는 흔적량에 불과 하였다. 멸치젓 중의 유리아미노산 중 함량이 많은 것은 leucine, isoleucine, phenylalanine, lysine, tyrosine, alanine, histidine, valine, methionine의 順이었고 glycine, proline, glutamic acid, arginine, threonine, serine 등은 함량이 적었다. 그리고 全유리아미노산은 젓갈 숙성중생원료에 비하여 약 2배로 增加 하였다. Betaine 은 생멸치 및 멸치젓 중에 各各 10.2㎎/100g, 30.0㎎/100/g였으며 이들이 엑스分室素에 대한 比率은 各各 0.6% 및 1.2%였다. TMAO 含量은 생멸치가 13.9㎎/100g, 멸치젓이 9.0㎎/100g였으며 TMA 含量은 各各 22.7㎎/100g 및 30.9㎎/100g였다. 總 creatinine 含量은 생멸치 및 멸치젓에서 各各 433.1㎎/100g, 575.8㎎/100g로서 엑스分室素에 대해 27.2% 및 22.8%였다. Omission test 結果 멸치젓의 呈味成分으로서는 유리아미노산 및 核酸關聯物質이 중요한 구실을 한다는 것을 알았다. This study was conducted to evaluate the taste compounds of fermented anchovy. The contents of such compounds as nucleotides and their related compounds, free amino acids, betaine, TMAO and total creatinine raw and fermented anchovy were analysed. The contents of IMP in raw anchovy appeared higher than other nucleotides and tended to decrease rapidly during fermentation. Therefore, in the case of fermented anchovy, hypoxanthine was abundant and IMP was very low in content. In the free amino acid composition of fresh samples abundant amino acids were leucine, isoleucine, phenylalanine, lysine, tyrosine, alanine, histidine, valine, methionine in order. Such amino acids as glycine, proline, glutamic acid, arginine, threonine and serine were poor in content. The contents of total free amino acids reached approximately about two times as compared with that of raw sample. The amount of betaine and TMA increased, while TMAO decreased during fermentation. The content of total creatinine in raw and fermented anchovy was occupied 22.8% and 27.2% of total of extractive nitrogen, respectively. As the results of omission test, the taste-active compounds of fermented anchovy are assumed to be free amino acids and nucleotides.

다형성 교모세포종에서 광범위 전적출술후 단기 재발된 치험 1예

박호권,강중식,조준,문창택,장상근,임정애 건국대학교 의과학연구소 2003 건국의과학학술지 Vol.13 No.-

Glioblasty/ma Multiforme(GBM) is the one of the most common malignant tumors in central nervous system(CNS). The incidence of the tumor is about 12% of all CNS tumors and about 50% of all intracranial tumors. Though the development of the microsurgical technique, radiosurgical technique, and chemotherapy works effectively, complete cure of the GBM has not been achieved. It has been known that the prognosis of GBM depends on the extent of surgical tumor removal, remained tumor volume, radiation dose, and chemotherapy. Not only patient's age but also tumor characteristics such as MRI enhancement, angiogenesis and necrosis are also very important prognostic factors. Authors experienced very aggressive GBM in aged woman, who received gross total tumor removal, but refused other therapeutic motalities postoperatively. Very rapid recurrence of GBM and global cerebral edema in aged woman should be considered fatal. This case demonstrates the effectiveness of aggressive removal and the limited usefulness of neurosurgical tools in GBM recurrence. Authors would suggest that the early diagnostic effort and the verified neurosurgical therapy for malignant tumor are still strongly requested to make better prognosis.

감마선과 Methyl Bromide 처리가 사과의 생리화학적 품질에 미치는 영향

강호진,정헌식,조덕조,변명우,최성진,최종욱,권중호 한국식품저장유통학회 ( 구 한국농산물저장유통학회 ) 2003 한국식품저장유통학회지 Vol.10 No.3

감마선(0, 0.5, 1, 2, 3 kGy) 조사와 methyl bromide(MeBr, 26 g/㎏, 4hr) 훈증 및 이들의 처리시기가 사과의 생리화학적 품질특성에 영향을 비교하여, 검역처리를 위한 ◁그림 삽입▷ (원문을 참조하세요) 감마선 조사의 응용성을 검토하였다. 감마선과 MeBr 처리에 따른 사과의 생리화학적 품질평가에서 2kGy 이상의 감마선 조사와 MeBr 훈증은 사과의 일부 생리화학적 품질특성의 변화를 촉진시키는 것으로 나타났다. 감마선과 MeBr의 처리시기별로는 수확 직후보다는 저온(0℃)에서 40일 정도 보관 후 처리한 대체적으로 품질손상이 적은 것으로 나타났다. 따라서 1kGy 이하의 감마선 조사와 지연조사는 사과 과실의 품질을 비교적 양호한 상태로 유지할 수 있어 검역처리 기술로 활용성이 있는 것으로 생각된다. 'Fuji' apples were treated by gamma irradiation (0∼3 kGy) or methyl bromide fumigation at commercial conditions (MeBr, 25 g/㎏, 4 hr) for quarantine purpose at two different treatment timing after harvest and stored under air a 0℃ for 4 months. Associated with the treatment timing of irradiation or fumigation, after 40 days of storage at 0℃ following harvest was more adequate than immediately after harvest in keeping qualities of stored apples. However, more than 2 kGy irradiation and MeBr fumigation were detrimental to physiological and chemical qualities of the fruits. These results show that less than 1 kGy irradiation at the delayed timing has a possibility to be applied as a quarantine procedure without significant changes in the quality of apples.

단결정 Si(111) 위에 형성된 Ti-실리사이드에 대한 RBS 및 XRD 분석

이중환,권오준,최치규,박동수,김건호,이상환,이의완,곽호원 濟州大學校 基礎科學硏究所 1991 基礎科學硏究 Vol.4 No.1

초고진공 상태에서 p형 Si(111)기판에 Ti을 증착한 후 고진공에서 열처리하여 Ti-실리사이드를 형성시켰으며, Ti-실리사이드의 상전이 및 형성운동학은 2 MeV⁴He? 이온 후방산란과 x-선 회절방법으로 규명하였다. 형성된 TiSi₂는 결정학적으로 C49(ZrSi₂)와 C54 구조의 두 종류로 확인되었다. C49 TiSi₂상은 열처리온도가 700℃이하의 저온에서 형성되었고, 700℃ 이상의 고온에서는 C54 TiSi₂상으로 나타났다. 본 연구에서 확인된 C54 TiSi₂전이온도(??)는 700℃ 였고, TiSi₂형성온도 영역내에서 TiSi₂ 층두께(χ)와 열처리시간(t)의 관계는 저온(700℃ 이하)일 경우 ??이고, 고온(750℃ 이상)에서는 χ=ct+d 의 관계식이 만족됨을 알 수 있었다. 이것은 700℃ 이하에서 TiSi₂ 형성기구가 Si 확산에 의해 제어되며, 750℃ 이상에서는 핵형성 제어에 의하여 계면반응하는 것으로 나타났다. Titanium silicides were prepared by depositing titanium film on p-type Si(111) followed by annealing in ultra high vacuum. The growth kinetics of Ti-silicide has been studied by using ion backscattering spectrometry and x-ray diffractometry. Two crystallographic structures of Ti-silicide were identified the (ZrSi₂)structure and C54. The C49 TiSi₂ phase was formed at low annealing temperature(<700℃),and it transformed to the C54 phase over 700℃. The relation between the thickness of TiSi₂ layer(χ) and the annealing time(t) was ?? when annealing temperature was under 700℃ and χ=ct+d when that was over 750℃. The former implied that the formation of TiSi₂ was controlled by diffusion and the latter by nucleation of at the Ti/Si(111) interface.

체외형 자동 제세동기(AED)와 심전도계(ECG)를 위한 통신 프로토콜의 설계 및 사용자 인터페이스 구현

김남훈,권희중,권호열,나학록 江原大學校 産業技術硏究所 2004 産業技術硏究 Vol.24 No.A

In this paper, we studied Automated External Defibrillator and Electro- Cardiogram System. Proposed System, CU-EX1, is a PC-based AED/ECG system that manages the data acquired by Paramedic CU-ER1. The system controls the transfer of data from the Paramedic CU-ER1 and the storage of the data in a local host computer. Patient data could be entered as soon as the rescue data is stored in a local computer. The system also displays the data on a local computer and facilitates review of rescue events.