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하수 2차 처리수 재이용을 위한 저압 및 중압 고도산화시스템의 성능평가
안규홍,안석,맹승규,김기팔,홍준석,정민우,권지향,Ahmed, Zubair 대한상하수도학회 2003 상하수도학회지 Vol.17 No.4
In the present study, the feasibility of UV/H₂O₂ systems was investigated using low and medium-pres sure lamps on biologically treated wastewater effluents for secondary effluent reclamation. Two types of UV lamps were used as the light sources (a 33W lowpressure mercury lamp and a 350-W mediumpressure mercury lamp). The results from these UV systems showed that the removal of organic compounds could be achieved in the contact time of longer than 30min (i.e., low UV doses). Efficiencies of color removal and disinfection were far better than those of organic matters measured as TOC, DOC and TCOD_(cr). In the low pressure lamp UV system, it has been found that DOC and color removals were 60.9 and 86.2% with 50㎎/L of H₂O₂ and contact times of 30 minute, respectively. Whereas, with the mediumpressure lamp UV system, TOC, DOC and color removal were 27.1, 5.6 and 95% with 14.3㎎/L of H₂O₂ and 14 minute of contact times, respectively. Both systems could be applied for the reclamation of secondary effluent treated with biological treatment processes.
( Hyung Joon Yim ),( Sang Jun Suh ),( Yeon Seok Seo ),( Soo Young Park ),( Young Oh Kweon ),( Young Kul Jung ),( Yun Soo Kim ),( Moon Young Kim ),( Sae Hwan Lee ),( Heon Ju Lee ),( Joo Hyun Sohn ),( J 대한간학회 2017 춘·추계 학술대회 (KASL) Vol.2017 No.1
Aims: Hepatorenal syndrome (HRS) exhibits grave prognosis. To improve the outcome of HRS, we compared the efficacies of higher dose (6 mg) vs. standard dose (4 mg) of terlipressin. Methods: The inclusion criteria were cirrhotic patients with type-I HRS. The cut-off of creatinine (Cr) for inclusion was initially >2.5 mg/dL, but was lowered to >1.5 mg/dL during the study period upon update of the Diagnostic Criteria. After randomization, patients received the 1 mg of terlipressin intravenously every 4 hours (test group) or every 6 hours (control group) together with albumin infusion for 15 days. If the Cr was not improved by >30% after 72 hours of initiation, the dose was increased to 12 mg/day in the test group. The primary end point was decrease of serum Cr to a value of 1.5 mg/dL or serum Cr level of less than 50% compared with the baseline value. As a post-hoc exploratory analysis, we compared the clinical outcome of the patients who had baseline Cr <2.5 mg/dL vs. ≥ 2.5 mg/dL. Results: A total of 60 patients were enrolled. Sixteen of 29 patients (55.2%) achieved the primary end point in the test group, while 15 of 31 patients (48.4%) achieved it in the control group (P = 0.735). The survival rates at day 15 were 58.6% (17/29) and 64.5% (20/31), respectively (P = 0.639). In the post-hoc analysis, achievement rates of the primary end point were not different in patients with baseline Cr<2.5 mg/dL vs ≥2.5 mg/dL, either (66.7% vs. 46.7%, respectively, P = 0.180). However, rate of Cr normalization to <1.5 mg/dL (66.7% vs. 26.7%, respectively, P = 0.005) and the survival rate at day 15 (92.9% vs. 48.8%, respectively, P = 0.004) were significantly higher in patients with Cr<2.5 mg/dL than in patients with Cr≥ 2.5 mg/dL at baseline. Conclusions: Higher dose of terlipressin did not improve the outcome of HRS. However, early initiation of terlipressin may improve the response rate and the survival in patients with HRS.
저 분해능 엔코더가 장착된 전동기의 적응 상태추정기를 이용한 고성능 속도제어
권택준(Taeg-Joon Kweon),현동석(Dong-Seok Hyun) 전력전자학회 1998 전력전자학술대회 논문집 Vol.- No.-
고성능 서보 전동기 시스템을 구축하기 위해서는 저속영역과 고속영역을 포함하는 넓은 속도영역에서의 정확한 속도검출을 통한 정밀한 속도제어가 필수적이며, 관성모멘트와 같은 전동기의 파라메터 변동에 대해 강인한 속도제어와 외란 억제능력도 중요한 요소로서 고려되어야 한다. 변동하는 부하의 관성모멘트올 식별하여 PI 속도제어기를 실시간으로 적응 동정하고, 플랜트 잡음과 측정잡음을 고려하는 상태 관측기인 칼만필터의 부하관성에 대한 민감성을 제거하기 위해 이를 적응 동정하여 적응 상태 추정기를 구현함으로써 우수한 속도 추정 성능을 얻었다 또한 외란과 불확실한 모델링은 등가 외란으로 추정되어 전향적으로 보상된다. 본 논문에서는 이러한 특징을 이용하여 전동기의 고성능 속도제어를 구현하고 유도전동기를 이용한 실험을 통하여 연구결과의 유효성을 확인한다.<br/> <br/>
경증 및 중증 외상성 뇌손상 환자의 성격평가 질문지 프로파일
권석준,노승호,Kweon, Seok-Joon,Rho, Seung-Ho 대한생물정신의학회 2005 생물정신의학 Vol.12 No.1
Objectives:This study was designed to investigate the characteristics of personality changes and emotional distress using the Personality Assessment Inventory (PAI) in patients with traumatic brain injury(TBI), divided into mild (MTBI) and severe (STBI) groups according to the severity of injury. Methods:The subjects were consisted of 25 patients with MTBI, 25 patients with STBI, and 25 normal controls. They were interviewed with the PAI. The data were analyzed by ${\chi}^2$ test, analysis of variance and Tukey test. Results:The results were the followings. First, Negative Impression in validity scales was elevated above cutoff point(T score 70) in both MTBI and STBI groups. Second, the clinical scales of which scores elevated above the cutoff point were Somatic Complaints, Anxiety, Anxiety-Related Disorders, Depression, and Schizophrenia in the MTBI, and Somatic Complaints and Depression in the STBI. Third, the clinical subscales above the cutoff point were Conversion, Somatization, Health Concerns, Affective Anxiety, Physiological Anxiety, Traumatic Stress, Cognitive Depression, Affective Depression, Physiological Depression, Thought Disorder, and Affective Instability in the MTBI, and Health Concerns, Cognitive Depression, Affective Depression, and Physiological Depression in the STBI. Fourth, Suicide Ideation in treatment scales was the only scale above the cutoff point in the MTBI and the others of the treatment and interpersonal scales in the MTBI and all of these scales of the STBI were not elevated above the cutoff point. Fifth, the scales of which scores showed significant difference between the MTBI and the STBI were Somatic Complaints, Anxiety, Depression, and Suicide Ideation, the subscales were Conversion, Somatization, Health Concerns, Affective Anxiety, Physiological Anxiety, Physiological Depression, and Psychotic Experiences. Conclusion:These results suggest that the patients with MTBI had more somatic and anxiety symptoms, depressed mood, and suicidal ideation than the patients with STBI. These characteristics are generally consistent with clinical observation and findings from previous studies of the patients with TBI, and the PAI seems to be a beneficial adjunctive assessment tool for the evaluation of patients with traumatic brain injury.
Transdermal delivery of myricetin for the hyperhidrosis treatment using lipid nanoparticles
Choongjin BAN,Joon-Bum PARK,Sora CHO,Hyerin KIM,Jonghyeok SHIN,Chakhee KIM,Hooyeon KIM,Yunjeong PARK,Myungseo PARK,Younghun JUNG,Seokoh MOON,Emine SEYDAMETOVA,Seok-Hyeon YU,Dae-Hyuk KWEON 한국생물공학회 2018 한국생물공학회 학술대회 Vol.2018 No.10
쌍태임신에서 태반유형 및 제대부착부위가 출생체중과 성장불일치에 미치는 영향
김금석 ( Kum Seok Kim ),한용보 ( Young Bo Han ),정연욱 ( Yoen Ug Jung ),권오준 ( Oh Joon Kweon ),김석영 ( Suk Young Kim ),이의돈 ( Eui Don Lee ) 대한산부인과학회 2002 Obstetrics & Gynecology Science Vol.45 No.12
Objective : To investigate the effect of the type of placenta and the portion of umbilical cord insertion on birthweight and growth discordancy in twin pregnancies. Methods : We selected 120 twins of 146 multiple pregnancies between March, 2000 and March,