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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.
신태용,염정열,김원,김현미,박해정,장진이,조성룡,채병숙 우석대학교 생명과학연구소 1998 생명과학연구소 논문집 Vol.2 No.-
We investigated the effect of aqueous extract of Ammomum xanthioides(AXAE) on immediate hypersensitivity. AXAE inhibited systemic anaphylaxis induced by compound 48/80 in mice. AXAE inhibited serum histamine levels induced by compound 48/80 in mice. Moreover, AXAE dose-dependently inhibited histamine release in peritoneal mast cells activated by compound 48/80. These results indicate that the AXAE may be benificial in the regulation of immediate type allergic reaction.
Proper choice of oral hygiene devices for pantients
Yum Hyun-Ji Jung, Su-Jin Wang, Min-Suk Lee, Sook Shin, Seung-Chul Cho, Ja-won 대한임상예방치과학회 2006 International Journal of Clinical Preventive Denti Vol.2 No.1
Objectives: The authors have examined 284 Korean adults on the oral hygiene devices they used and their oral status. Methods: All adults volunteered to participate in this study. Of the total there were 115 patients who had their general oral status checked, 60 patients had bridge appliances, 61 patients had periodontal disease, and 48 patients had fixed orthodontic appliances. Correlation coefficients were calculated between the proper oral hygiene devices index which they used and such oral status as DMFT rate, s-PHP index, and CPI index on each individual. Results and Conclusion: The proper oral hygiene devices index with 10 points being a full score determined as 6.93/10.0 points in adults with their general oral status checked, 5.75/10.0 points in patients with bridge appliances, 3.42/10.0points in patients with periodontal disease and 5.80/10.0 points in patients with fixed orthodontic appliances, Oral health education was needed on the proper selection of oral hygiene devices for individuals, especially for patients with periodontal disease. Correlation coefficients were calculated as the higher index of proper oral hygiene devices, less in the s-PHP index in adults(r=-.245, p<.01.). The longer time in tooth brushing, a little bit higher PMA index(r=.188, p<.05), and the more loss of elasticity, a little bit less CPI index, (r=-.191, p<.05) in normal adults. The longer time in tooth brushing, the higher the score in s-PHP index (r=.260, p<.05) in patients with bridge appliances. Thus, frequent changing of oral hygiene devices index, the less the s-PHP index(r=-324, P<.05) in patients with periodontal disease.
정신지체가 동반된 뇌성마비 환자의 임플란트 치료를 위한 CT 촬영 시 진정법 시행
서광석(Kwang-Suk Seo),이주환(Ju-Hwan Lee),신터전(Teo-Jeon Shin),이영은(Young-Eun Yi),김현정(Hyun-Jeong Kim),염광원(Kwang-Won Yum),김명진(Myung-Jin Kim) Asia association of Disability and Oral health 2008 International Journal of Disability and Oral Healt Vol.4 No.1
A 33-years-old female pateint with cerebral palsy showing spastic quardriplegia and severe mental retardation was scheduled for dental implant restorations. Before implant surgery we had to take implant CT. But, because of her involuntary motion and communication difficulty, sedation was needed in order to take CT. After 8 hour NPO, propofol infusion sedation with TCI (target controlled infusion) system was administered. The propofol blood concentration of the patient was maintained 2-3 μ/ml to keep deep sedation to prevent uncontolled movement. During sedation, we monitored ECG, pulse oximetry, blood pressure, capnometry for patient safety. Oxygen was administered via nasal prong for preventing hypoxemia and to keep airway during sedation some bands were applied to lift mandible. Total duration was 20 minutes for taking CT, and she was discharged from hospital after 30 minute rest without complication.
염기호(Kiho Yum),김효석(Hyo-Seok Kim),이철우(Chulwoo Lee),장석희(Suk-Hee Jang),김봉수(Bong-Su Kim),임형진(Hyoung-Jin Im) 한국자동차공학회 2009 한국자동차공학회 학술대회 및 전시회 Vol.2009 No.11
In this research, vehicle gravel & sand noise was studied from a view of tire design. First, the mechanism of gravel & sand noise was identified by driving on the road where sand and small particles of gravel were spread. Second, the influence of tire design parameter on vehicle gravel noise was studied by controlling tire tread pattern and viscoelastic characteristics of tire tread rubber and then the influence on braking and rolling resistance performance was also studied. It was found that high frequency gravel noise was mainly recognized in the rear seat of SUV and decreases as road surface temperature increases. In addition, the directional tread pattern with symmetry was found to amplify gravel noise. Finally, it was found that gravel noise has a relationship with tanδ characteristics in low temperature and braking distance. In particular, gravel noise decreases as braking distance decreases.
정신분열병 환자의 인지과제수행에서 삼차원적 시공간-운동 방해자극 처리의 특성
정혜정,김재진,박성혁,전종희,김지혜,염태호,이장한,김선일,구정훈,조원근,안석균,이홍식 大韓神經精神醫學會 2003 신경정신의학 Vol.42 No.2
Objectives : Abnormalities of cognitive responses to verbal and visual distracter in schizophrenia have been demonstrated in numerous studies but little is known about three dimensional visuospatial-motor distracter processing. The purpose of this study was to investigate the vulnerability of patients with schizophrenia to three dimensional visuospatial-motor distracter. Methods : 14 patients with schizophrenia and 14 normal volunteers were assessed on three dimensional maze tasks requiring on working memory and reasoning ability in the virtual reality environment. Performances were compared according to with- or without-distracter conditions. Results : Patients with schizophrenia showed significantly lower performances than normal control group on cognitive flexibility, simple motor function or motor control and motor coordination, working memory span and delayed performance times. The performance index tended to be more deteriorated, but not significantly, in with-distracter condition than in Without-distracter condition in schizophrenia. Conclusions : Patients with schizophrenia tend to be vulnerable to visuospatial-motor distracter which simulate the real world of three dimensional environment.