DO와 ORP를 이용한 축산폐수처리 SBR운전 제어

전병희 ( Byong Hee Jun ),김도환 ( Do Hwan Kim ),최은희 ( Eun Hee Choi ),김성신 ( Sung Shin Kim ),김창원 ( Chang Won Kim ),배현 ( Hyeon Bae ) 한국물환경학회 2002 한국물환경학회지 Vol.18 No.5

A pilot scale SBR (working volume, 20㎥) treating piggery wastewater was operated with real wastewater. The operation mode of intermittent feeding of raw water and sub-cycle with repeating anoxic-aeration conditions were adapted to avoid the high-strength nitrogen inhibition. In sub-cycle, aeration time for nitrification was tried to be controled with ORP and/or DO meter. The characteristics of control was somewhat different between ORP and DO. DO showed potential ability to detect complete ammonia oxidation point by the first order differential values or absolute value. Especially, DO was proved to be useful for high loading rates. ORP indicated the ending point of nitrification by the plateau appearing after bending point. Because ORP can be utilized as a diagnosis tool by its good sensitivity for the microbial condition in reactor, the simultaneous application of DO and ORP was recommended for the stable control of SBR.

열공형과 비열공형 피질하 혈관성 치매에서 위험인자의 차이에 관한 비교 연구

배희준,정지향,유경호,나덕렬,김상윤,최경규,양동원,손의주,이상도,김재우,박경원,김응규,이재홍,박미영,한일우,함동석,최문성,하충건,최성혜,이애영,이병철,한설희 대한치매학회 2003 Dementia and Neurocognitive Disorders Vol.2 No.2

Backgrounds and Objectives: Vascular dementia is a group of dementing disoders arising from various stroke syndrome. Among these. subcortical ischemic vascular dementia (SIVD) is regarded as a relatively distinct clinical entity. However, MRI patterns of SIVD are not homogenous. In some patients, lacunes are dominant, and in others, subcortical white matter changes are. This study was designed to compare risk factor profiles between SIVD with and without multiple lacunes. Methods: We divided 47 subjects (22 males, mean age. 68 years) recruited from VADAPET (Multicenter Trial For Evaluation Of The Changes In the PET Images Of Subcortical Vascular Dementia Patient) study into two groups one with more than 5 lacunes in deep gray matter (lacune group) and the other with 5 or less(non-lacune group) Clinical characteristics and laboratory findings of two groups were compared. Results: Nineteen of 47 patients (40%) belonged to the lacune group. The lacune and non-lacune groups d d not differ in the following variables: age, hypertension, diabetes mellitus, hyperlipidemia heart disease, history of stroke or TIA, history of trauma or major surgery, family history of hypertension stroke, or dementia, age at diagnosis of dementia, body mass index, white blood cell count, ESR, CRP, fibrinogen, hemoglobin A1C, total cholesterol. LDL cholesterol creatinine, proteinuria, glucosuria, and microhematuria. However, male sex, smoking alcohol. hemoglobin, and HDL cholesterol were possibly associated more with lacune group SIVD than with non-lacune group (p<0 1) Multivariate analyses revealed that smoking, hemoglobin, and HDL cholesterol were independent predictors of SIVD with multiple lacunes Conclusion: Our study suggests that SIVD with multiple lacunes may be significantly different in smoking habits hemoglobin, and HDL cholesterol from SIVD without multiple lacunes.

국내무연탄 연소에 따른 순환유동층내의 열전달 특성

선도원,배달희,조성호,박영성 大田大學校 産業技術硏究所 1997 산업기술연구소 論文集 Vol.8 No.1

순환유동층 시험연소로에서 국내무연탄의 연소에 따른 연소로 내벽의 열전달 특성을 고찰하였다. 연로소의 온도변화 및 층밀도의 변화에 따른 전열계수의 변화를 측정하였다. 한편 전열모델을 구성하고 그 계산치를 실험결과와 비교하였다. 또한 복사 전열에 대한 고찰을 통해 순환유동층 열전달에 미치는 복사의 영향을 추정하였다. Bed to wall heat transfer in a both scale circulating fluidized bed was studied. Domestic anthracite was burned to heat the combustor. Variation of heat transfer rate with combustor temperature, bed density was monitored. Test result was compared with a proposed heat transfer model and radiation effect in heat transfer was predicted

폐플라스틱 유동층 열분해 공정연구

선도원,조성호,배달희,박영성 大田大學校 環境問題硏究所 1996 환경문제연구소 논문집 Vol.1 No.-

Process characterization of waste plastics pyrolysis in a bench scale fluidized bed test unit was investigated. Feasibility of commercial scale process such as proper feeding system and reaction control ability were analysed and confirmed based on the reaction characteristics varying with the plaxtics and system assemblies. Eight pure or waste plastic samples were collected from the industrial waste plastics generation source in Korea. Selected samples were HDPE, LDPE autobovile interior, XLPE electric wire coat, synthetic rubber, EVA shoe sole, PS(monomer and styrofoam) and ABS. The pattern of decomposition reflected composition and molecular structure of plastics. Decomposition of polyolifin produced linear paraffinic and olefinic compounds. Recovery of styrene monomer and aromatic compounds were attained from the phrolysis of PS and ABS. However, secondary reaction was monitored was monitored even from the pyrolysis of aliphatic samples of XLPE and EVA.

흰쥐 腦의 中心扁桃核에서의 Substance P 및 Enkephalin 함유구조의 형태학적 특징

마도훈,조희중,김은희,박매자,배용철,홍해숙,주강 慶北大學校 醫科大學 1990 慶北醫大誌 Vol.31 No.4

흰쥐 뇌의 중심편도핵에서의 substance P (SP) 및 Enkephalin (ENK) 함유신경세포 및 축삭종말의 분포를 관찰하기 위하여 peroxidase antiperoxidase법을 행하여 다음의 결과를 얻을 수 있었다. SP함유신경세포는 중심편도핵의 medial zone에 분포하였고 SP함유축삭종말은 lateral capsular zone에서 고밀도로 관찰되었다. SP함유신경세포는 원형 내지는 타원형이었고 2∼3개의 근위수상돌기(proximal dendrite)를 가졌다. ENK함유신경세포 및 축삭종말은 공히 central 및 lateral capsular zone에 존재하였다. ENK함유 신경세포는 직경이 약 17-24㎛ 정도였고 3∼4개의 근위수상돌기를 관찰할 수 있었다. The central amygdaloid nucleus is rich in a number of neuropoptides. The present study examines the distribution and morphological characteristics of substance P (SP) and leucine-enkephalin (ENK) containing neurons in this nucleus. The results obtained were as follows: SP immunoreactive cells were observed within the medial zone and SP immunoreactive axon terminals were heaviest within the lateral capsular zone. The immunoreactive cells were round or oval shape (diameter, 15-20㎛) and had two or three proximal dendrites. ENK immunoreactive cells and axon terminals located within central and capsular zones. The immunoreactive cells were round or oval shape (diameter, 17-24㎛) and had three or four proximal dendrites.

고도정수처리 공정에서의 천연유기물질 특성변화 및 소독부산물 전구물질의 제거특성 평가

노재순,손희종,박은주,황영도,최동훈,배석문,신판세 慶星大學校 環境問題硏究所 2002 環境硏報 Vol.12 No.1

In this research the movement and apparent molecular weight distribution of hydrophilic/hydrophobic organic matters in advanced water treatment process were investigated using the raw water of Maeri area, located in downstream of Nakdong river, and the variation of the disinfection by-product formation potential was also investigated. In the raw water used in experiments, the content of BDOC (biodegradable dissolved organic carbon) in dissolved organic carbon (DOC) was about 39%, and this value is far above a normal, Pre-ozone treatment showed an increase of 40% in the BDOC content, and this means that biodegradability was remarkably increased by ozone treatment BDOC concentration in BAC treated water was 0.09 mg/L, which means 84% of BDOC removal rate compared with that in post-ozone treated water. The variation of chlorine disinfection by-product formation potential in each process unit of water treatment process was analyzed. TOXFP concentration in raw water was 449 ㎍/L, and the contents of THMFP and HAAFP among TOXFP were 24% and 23%, respectively. The removabilities of these materials BAC process had an order of TOXFP > HAAFP > THMFP. BAC process was less effective for THMFP than others. The distribution of hydrophilic organic matters were evaluated in each treatment process. Hydrophilic and hydrophobic matters in the raw water had a ratio of 50 : 50, and the ozone treatment decreased the content of hydrophobic matters. The BAC treatment made the ratio 85:15. These mean that the removal of hydrophilic matters is more difficult than that of hydrophobic materials in water treatment process. In addition the portions of humic and fulvic acid in hydrophobic matters were analyzed. Fulvic acid a large portion among hydrophobic matters in the raw water, and the portion was 78%. Ozone treatment was more effective on the removal of fulvic acid than humic acid. After BAC treatment, the concentration of residual fulvic acid was high than humic acid. Chlorine disinfection by-product formation for hydrophilic and hydrophobic mattrts was compared in each process unit. in the raw water TOXFP and THMFP formation for hydrophobic matter was higher, and HAAFP was highly formated for hydrophobic matter. After post-ozone or BAC treatment, chlorine disinfection by-product formation has high potential for hydrophobic matters. Comparing humic and fulvic acids, chlorine disinfection by-product formation potential was higher for humic acid than for fulvic acid in all processes. In the comparison of the reactivity with chlorine disinfection by-product per unit DOC, THMFP and DOXFP showed higher reactivity with hydrophobic matter than with hydrophilic matter in all processes, and HAAFP was highly reacitive with hydrophilic matter. Apparent molecular weight distributions of organic matters were investigated in each process step.The content of low molecular weight organic matters less than 1000 Da in DOC was high in all processes except raw water, but molecular weight organic matters more than 1000 da was higher than molecular weight organic matters less than 1000 Da in the formation potential of chlorine disinfection by-product.

Long term effects of fluoride administration on the chemical compositions of rat bones

Do, Young Ju,Kim, Hye Young,Choi, Youn Hee,Song, Keun Bae 대한구강보건학회 2002 大韓口腔保健學會誌 Vol.26 No.3

불소는 체내 대사 중 칼슘대사에 영향을 미쳐 골 광물화 기전에 관여함으로써 인체 경조직 내에 축적된다. 또한 적절한 농도에서는 골의 형성과 흡수를 촉진하고 골밀도를 증가시킬 수 있다고 알려져 있다. 본 연구는 불소 투여가 백서 골강도 및 화학적 조성에 미치는 영향을 알아보기 위하여 여러 농도의 불소를 실험백서에 최장 30주 동안 장기간 투여하였다. 실험동물은 생후 4주경의 체중 80-100gm내외의 Sprague-Dawley계 자성백서 30마리를 15주군 15마리,30주군 15마리로 하여 각 군 당 체중을 평균 1gm내외로 균등하게 조정하고 다시 각각 3마리씩 5개의 소군으로 나누었다. 제 1소군은 대조군으로 불소를 첨가하지 않은 Q-water를 투여하고, 제 2소군은 1 ppmF, 제 3소군은 5 ppmF, 제 4소군은 10 ppmF 및 제 5소군은 20 ppmF의 불소를 실험 15주 및 30주 동안 식수대신 무제한 공급하였으며, 또한 체중변화를 매주마다 동물천평으로 측정하여 체중차이 즉 자연적인 성장에 의한 골의 변화를 최소화하였다. 실험최종일 백서를 회생하여 대회골, 경골, 하악골 및 척추골을 채취하여 각종 골의 압축강도와 표면미세경도 및 칼슘, 무기인 그리고 마그네슘 둥의 무기이온들을 Instron과 Victor's micrordness tester 및 Induced Coupled Plasma Emission Speorophotometer (ICP)로 측정 및 분석하였다. 각 군별로 수합된 모든 자료들은 SAS 6.12외 t-test와 일원변량분산분석법을 이용하여 투여되는 불소의 농도와 기간에 따른 체중변화와 골표면미세경도 및 무기이온 농도의 장기간 평균차이를 검정하였으며, 통계적으로 유의한 경우에 사후검정법으로 다중비교점정 (Duncan's multiple range test)을 실시하여 다음과 같은 결과를 얻었다. 1. 실험 15주 및 30주 모두에서 투여되는 불소 농도가 증가될수록 백서 대퇴골의 압축강도는 증가되었다. 2. 백서 대퇴골, 경골 및 하악골의 표면경도는 실험 15주 및 班주군에서 동일하게 대조군에 비해 1 ppm부터 20 ppm까지 투여되는 불소 농도가 증가될수록 통계적으로 유의하게 증가하였다 3. 15주 및 30주 동안 0,1,5,10 및 20 ppm불소투여 시 대퇴골, 하악골 및 요추 내의 칼슘, 마그네슘 및 무기 인의 함량은 불소 투여량에 따라 증가 양상을 나타내었으며 , 칼슘과 인의 결합비는 각 시료간에 유의한 차이는 없었으나 하악골과 요추에 비해 대퇴골에서 약간 더 높은 결합비를 나타내었다. 이상의 결과를 종합하면 수돗물불소화에 사응되는 1ppm 정도의 불소는 불소가 투여되지 않는 대조군에 비해 골 내에 무기이온의 축적을 증가시킴으로써 골 건강에 도움을 줄 수 있지만 불소농도가 더욱 증가될 때 더 많은 무기 이온이 축적됨에 따라 골의 성질에 어떤 영향을 미치는 지에 대해서는 계속적인 연구가 뒤따라야 하겠다

다양한 사구체 질환자들의 소변에서 TGF-β-inducible Gene-h3 (βig-h3)의 발현 양상

홍희주 ( Hee Joo Hong ),김성도 ( Sung Do Kim ),이병철 ( Byoung Cheol Lee ),윤희정 ( Hee Jung Yoon ),배은희 ( Eun Hee Bae ),조병수 ( Byoung Soo Cho ) 대한신장학회 2006 Kidney Research and Clinical Practice Vol.25 No.2

Comparative proteomic analysis of mouse melanoma cell line B16, a metastatic descendant B16F10, and B16 overexpressing the metastasis-associated tyrosine phosphatase PRL-3.

Kim, Sang Hee,Kim, Yongmo,Kim, Moonil,Kim, Dae Shick,Lee, Sang Chul,Chi, Seung-Wook,Lee, Do Hee,Park, Sung Goo,Park, Byoung Chul,Bae, Kwang-Hee,Kang, Sunghyun Pergamon Press 2009 Oncology Research Vol.17 No.11

<P>Metastasis is a complex, multistep process by which a cancer cell leaves the primary tumor, travels to a distant site via the circulatory system, and establishes a secondary cancer. A deeper understanding of the molecular events underlying metastasis will provide information that will be useful for the development of new diagnostic and therapeutic strategies. The B16 and B16F10 mouse melanoma cell lines are widely used as model system for studying many aspects of cancer biology including metastasis. Compared with B16, which has a low metastatic potential, the highly metastatic cell line B16F10 displayed a higher metastatic ability along with higher expression levels of the metastasis-associated phosphatase of regenerating liver-3 (PRL-3). B16 cells transfected with PRL-3 cDNA (B16-PRL3) had metastatic abilities comparable to those of Bl16F10 cells. To study the molecular mechanisms that underlie metastasis, the proteomes of the B16, B16F10, and B16-PRL3 cell lines were compared using two-dimensional differential in-gel electrophoresis. Proteins that varied significantly in levels between these cell lines were selected and identified using mass spectrometry. Interestingly, many proteins, especially those present in membrane fractions, were similarly up- or downregulated in both the Bl16F10 and B16-PRL3 cells lines compared to B16 cell lines. The list of similarly regulated proteins included heat shock protein 70, fascin-1, septin-6, ATP synthase beta subunit, and bone morphogenic protein receptor type IB. These proteins may play a causal role in PRL-3-mediated metastasis. These investigations open an avenue for the further characterization of the molecular mechanisms that underlie metastasis.</P>

Analysis of the Purpose of Visiting Wetlands Using Pictures Posted on Social Media

Park, Woong-Bae,Park, Siae,Choi, Tae-Jun,Kim, Dae-Hee,Lee, Do-Hee,Do, Yuno National Institute of Ecology 2022 Proceedings of NIE Vol.3 No.2

In this study, 4,136 pictures posted on a social media platform were analyzed to discover wetlands that are worth visiting to experience our cultural values. Pictures from 300 of the 2,499 listed wetlands have been posted in South Korea. Proximity of a wetland was the most important criterion, regardless of the type of wetlands that were visited. People visited wetlands at the time and season when they were good for recreational activities. Most of the subjects in the pictures were the visitors and natural scenery of a wetland. There was no correlation observed between the wetland conditions and the number of pictures taken by the visitors. Sightseeing and leisure activities are a significant part of various ecosystem services offered by wetlands, but most of the visitors seem to be unaware that the place they have visited is a wetland. Therefore, wetland awareness programs are needed, even for wetlands close to the residential areas that many people have already visited in this study.