Metal separator의 자력개선과 자동차 연구

서성규,황원준,양병곤 여수대학교 산업기술지역개발연구소 2001 産業基術硏究所 論文集 Vol.10 No.-

The metal separators which are used at chemical plants and/or plastic powder manufacturing plants are to improve the productivity and reduce the inferiority of the materials and protect the machines so as to prevent the malfunction of the machines. The metal separators are divided according to the collecting methods as permanent magnet, electro magnet, supersonic waves and each method has advantages and disadvantages. The extensively spread metal separator is magnet type which has relatively low collecting ratio to 91%, but the facility cost is cheap and almost no annual operation cost with long average life span. The magnetic force intensity of the magnet bar surface can improve the efficiency of alien substance remove. The extensively used current permanent magnet type has the maximum 4000 gauss of surface magnetic force intensity. Recently a local company developed a maximum 8500 gauss of surface magnetic force intensity and supply to the local market with equal capacity to the imported one. But, the alien substance collected on the permanent magnet bar may be removed manually and it is required of magnetic force improvement and automation for process and economical efficiency. Therefore, the object of this research is to develop the magnetic force improved magnetic bar and automatic device for the collected alien substance removal, so improve the collecting ratio and the efficiency of the production process. We tested the optimized conditions by measuring the magnetic force of the permanent magnet bar according to the magnet location and size. As a result of this research, we developed a magnet bar with surface magnetic force intensity with maximum 8500 gauss. Also, we tried to check the possibility of the automation by testing of surface resin coating method for automation device development, researching the collecting capacity of alien substance and designing the stabilization of machine process structure.

지렁이를 이용한 슬러지 안정화시 부하율의 영향 및 슬러지 종류별 안정화 가능성 검토

서성철,박종안,이노섭,배형석,이종화,허준무,김준현 순천향대학교 기초과학연구소 1997 순천향자연과학연구 논문집 Vol.3 No.2

Stabilization of organic sludges using earthworms was conducted in a laboratory to investigate the effect of feed rate on the vermistabilization, and feasibility of vermistabilization of various sludge was also carried out to further wider application of vermistabilization. Sludges used in this study were septic tank sludge, papermill sludge and brewery sludge. Sludge reduction, cast production, earthworm growth rate and cocoon production were monitored periodically to check degree of stabilization. Feed rate of septic tank sludge did not have a notable effect on the sludge reduction and cast production per unit weight or earthworm. There was also no difference in the earthworm growth rate per unit weight of the sludge removed among the different sludge feed rate. The amount of septic tank sludge, papermill sludge and brewery sludge per gram of earthworm per day were 0.06, 0.05, and 0.02g, respectively. The weight of increase of earthworm per unit weight of the sludge removed was 0.18g/g for the septic tank sludge, 0.21g/g for the papermill sludge, and only 0.06g/g for the brewery sludge. It was therefore concluded that brewery sludge was not suitable for vermistabilization mainly due to high organic content to be easily converted organic acid. The concentrations of several heavy metals, volatile solids, total organic carbon and total kjeldahl nitrogen in the cast were generally lower than those in the raw sludges.

환경친화적 고체연료 개발 : 패각 및 석탄의 특성과 탈황반응

서성규,황원준 國立 麗水大學校 環境問題硏究所 2000 環境硏究論文集 Vol.3 No.-

In this study, characteristics of sea shell, coal and desulfurization have been investigated in order to examine the feasibility on the development of the clean solid fuel. Physico-chemical properties of waste sea shells and limestone have been characterized by using BET, XRD, and SEM. The main component of oyster shell was CaCO_(3) similar to limestone. After calcination of oyster shell, specific area decreased, and pore diameter increased. Under this experimental conditions, desulfurization efficiency of sea shells was the range of 49.1~61.7%. The desulfurizer capacity and efficiency of oyster shell were higher than others. The best fit desulfurization condition of oyster shell based on economy and desulfurization efficiency was as follows : particle size = 90~150㎛, and Ca/S =1.5~3.0. We can conclude that wasted sea shells can be used as a desulfurizer on the development of clean solid fuel

ATIS 최적 프로브차량대수 모형개발

박성식,고승영,서준석 명지대학교 산업기술연구소 2001 産業技術硏究所論文集 Vol.20 No.-

To collect real-time link traffic information(Link Travel Time) for based on beacon and GPS technologies prove cars always have to be operate on the entire network. In this study, in case of taxi probe cars based with Beacon and GPS, method on determining required number of probe cars is studied to get traffic information of reality. Using taxis for probe cars, the the factors that influence the number of probe cars are operation time and distribution of prove cars over the network, operate distance and travel speed, the portion of revenue operation distance of taxis. The result of this study was ; As the collecting period for one traffic information prove cars travel more link, thus the number of prove cars decreases. The number of prove cars decreases when the allowable numer of links that no link travel times are collected increases.

위치결정 스테이지의 정밀위치결정을 위한 가상모드 입력성형기 응용에 관한 연구

장준원,박상원,서용규,홍성욱 한국공작기계학회 2008 한국공작기계학회 춘계학술대회논문집 Vol.2008 No.-

This paper deals with precise positioning of positioning stage by input shaping, Input shaping is well known to be a very effective tool for suppressing the residual vibration of flexible structures. However, the input shaping tends to increase the rise time of the system. This problem often degrades the performance of system, In order to improve this problem, this paper proposes an input shaping method using the virtual mode concept for positioning stage. The virtual-mode input shaper is proved effective through experiments.

좌각차단을 동반한 심부전증 환자에 실시한 양심실 심박조율기 치료 : 증례 보고

김찬욱,차태준,김성만,김민대,권성일,서수홍,최병주,주승재,이재우 고신대학교 의학부 2002 高神大學校 醫學部 論文集 Vol.17 No.1

Epidemiological studies suggest that 30-50% of patients diagnosed with symptomatic congestive heart failure(CHF) have electrocardiographic evidence of a major intraventricular conduction delay, which may worsen left ventricular systolic and diastolic dysfunction through asynchronous ventricular contraction and paradoxical interventricular septal wall motion. Biventricular pacing is an emerging therapy allowing simultaneous electrical stimulation of the both ventricles with an implantable pacing system and it improves hemodynamics and well-being of patient by reducing ventricular asynchrony. Recently, we underwent biventricular DDD pacemaker implantation in a patient with CHF and Left bundle branch block and was significantly improved exercise tolerance and quality of life in that patient.

축산분뇨에서 분리한 세균의 동정 및 효소학적 특성

김진선,정소선,이준석,최미영,서승염,이현환 공주대학교 자원재활용 신소재 연구센터 2002 센터사업 성과집 Vol.- No.1

축산 분뇨의 퇴비화에 관련되는 세균들을 분리하고 이들이 생산하는 효소들 중 퇴비화에 관련되는 것으로 사료되는 amylase, cellulase, protease 및 lipase의 특성을 연구하였다. 발효 중에 있는 축산 분뇨로부터 24주의 균주를 분리하여 이중 protease, cellulase, amylase, 그리고 lipase의 활성을 모두 가진 6개의 균주들을 선별하였다. 분리한 6개의 균주들을 동정해본 결과 Corynebacterium varibilis, Bacillus spp., Pseudomonas spinosa, Acetobacter calcoaceticus 및 Athrobacter cumminsii 등으로 밝혀졌다. 이들이 분비하는 효소들의 특징은 중성에서 알칼리성에 이르는 광범위한 pH에서 효소들이 높은 활성을 보였으며, cellulase를 제외한 대부분의 효소들의 최대 활성 온도가 60℃ 정도였으나 cellulase의 경우 37℃가 최적 활성 온도였다. 이는 발효가 진행되어 축산 분뇨에 고온의 열이 발생할 때, 이 환경 하에서 유기물을 분해함으로써 발효과정을 원활히 진행시키는 것으로 생각된다. 다만 cellulase 생산 세균의 경우 축산 분뇨의 초기 발효시에 관여하여 균주의 성장 및 유기물의 분해에 관여하는 것으로 사료된다. 이와같은 결과는 축산분뇨 발효 초기와 발효후기의 온도가 상승된 환경에서 작용하는 세균의 균총이 다름을 암시하고 있다. To develop the effective composting system, we isolated bacteria that have the abilities to degrade organic matters such as cellulose, carbohydrate, protein and lipid during the compositing of livestock manure. Among 24 strains, 6 bacteria have all the enzymatic activities of protease, amylase, cellulase and lipase. These microorganisms were identified as Corynebacterium varibilis, Bacillus spp., Pseudomonas spinosa, Acetobacter calcoaceticus and Athrobacter cumminsii. All the enzymes produced by the bacteria showed activities at the broad pH range and the maximal activities were obtained at 60℃. It seemed that after the increase of temperature caused by fermentation of livestock manure, the enzymes started to degrade the raw materials, which are added for the control of humidity. However cellulase activity was maximum at 37℃, suggesting that the cellulase-producing bacteria work at an early stage of livestock manure fermentation to provide the organic material for the growth of other bacteria. The production of the enzymes were growth-associated and maximal activities appeared at the early stationary phase of growth.

The whole-exome sequencing in three families with atopic dermatitis

( Joon Hyuk Seo ),( Moo Yeol Hyun ),( Won Il Heo ),( Kapsok Li ),( Seong Joon Seo ),( Chang Kwun Hong ) 대한피부과학회 2015 대한피부과학회 학술발표대회집 Vol.67 No.2

Background: The prevalence of atopic dermatitis (AD) has increased over a recent 10-year. AD tends to run in families that passed down from generation to generation and commonly starts in childhood. It is as high as 20% in children less than 5 years old. Thus, early discovery and therapy of AD are important. It has emerged the necessity of biomarker for early detection of AD. Objectives: The goal of this study is to find novel gene markers for diagnosis of early-onset atopic dermatitis in Koreans. Methods: Peripheral blood was obtained from three families (6 early-onset AD patients and 6 controls) with autosomal dominant condition. Whole Exome Sequencing (WES) was performed using SureSelect Human All Exon V4+UTR 71 Mb. Variants of atopic dermatitis were filtered step by step to gain the important candidate genes. Results: We have confirmed overlapping genes in common variants of filter 5 in three family. 15 genes were overlapped in filter 5 and two of them reached to filter 7 can be called “rare variant”. Uniquely, COL6A6 gene appeared in all of three family. We also found variants of filaggrin, filaggrin2 and IL4R that is well-known makers of atopic dermatitis. Conclusion: We were able to detect COL6A6 gene by finding overlapping genes in rare and common variants of three family. It may become a novel gene as early-onset AD marker.

Expression of Neutrophil Gelatinase-Associated Lipocalin in Skin Epidermis

Seo, Seong Jun,Ahn, Ji-Young,Hong, Chang-Kwun,Seo, Eun-Young,Kye, Kyung-Chae,Lee, Woong-Hee,Lee, Sang-Keun,Lim, Jong-Soon,Hahn, Myong-Joon,Kjeldsen, Lars,Borregaard, Niels,Kim, Chang Deok,Park, Jang-K Elsevier 2006 The Journal of investigative dermatology Vol.126 No.2

소멸형 잔반처리기 수분조정제 개발에 관한 연구

채성준(Seong Joon Chae),문정호(Jeong Ho Moon),박윤서(Yun Seo Park),박상규(Sang Kyu Park),오성훈(Seong Hoon Oh) 유기성자원학회 1997 유기물자원화 Vol.5 No.1

음식쓰레기의 처리가 사회적인 문제로 대두되기 시작한 지도 얼마되지 않았다. 하지만 이의 처리방법에 대해서는 여러해 전부터 많은 논란을 일으켜 온 것이 사실이다. 현재 국내 벚 일본에서 크게 관심을 가지고 있는 처리방식으로는 음식쓰레기를 고옴으로 건조시키는 방법과 일정량의 담체 (수분조정제)를 반응조의 내부에 담아 놓고 일정기간동안 계속적으로 투입하면서 미생물에 의한 분해가 일어날 수있도록 하는 소멸방식이 있다. 본 연구실에서는 위의 두가지 방식 중 소멸형의 잔반처리기에 관심을 가지고 이의 효율적인 음식물 분해를 위한 조건설정에 대해 실험을 진행하게 되었고 얼차척으로 음식물이 투업되고 난후 미생물과의 직접적인 접촉을 이루어지게 하는 수분조정제를 개발하기 위한 실험을 진행하게 되었다. 이를 위해 수분조정제로 쓰일 물질의 선정과 초기 미생물의 성장을 극대화시킬 수 있는 물질의 첨가에 의한 개선, 탈취 흡착제의 첨가에 의한 반응시 발생효}는 악취의 농도 변화 등에 대해 실험을 진행하게 되었고, 이에 대한 양호한 결과를 얻게 되었다. 1t is not long since treatment of food waste became a social problem. However, it is a fact that there have been a lot of debates on the treatment of food waste since several years ago. At present, two ways of disposing food waste are under great interest in Korea and Japan. One is drying of food waste at high temperature. The other is disappearance type , in which analysis by microorganism takes place with continuous supply of a bulking agent for a certain period of time that was stored in a reactor. 1n our laboratory, Disappearance type Food Waste Disposer is under interest, and experiments regarding condition establishment for efficient analysis of food waste were conducted. As preceding experimentation, experiments were done with regard to the selection of a substance to be used as a bulking agent, improvement by addition of a substance which maximizes initial growth of microorganism, and a concentration change in rank odors generated by reaction with deodorizer (absorbent). The results turned out to be satisfactory.