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.

고층사무소건물의 매스구성을 위한 전문가 시스템의 개발에 관한 연구

서정훈,박상현,권종욱 영남대학교 환경문제연구소 2000 環境硏究 Vol.20 No.1

건축에서의 전문가 시스템은 설계자에게 많은 가상적인 해결안을 반복해서 수집해야할 수고를 줄여주고 모델링이나 정보제공과 같은 정형적인 측면과 설계의 판단, 상황별 특성과 같은 비정형적인 측면을 연결시키는 도구로 작용한다. 본 연구는 고층사무소건물의 설계과정 중 매스 구성 단계에서 중요한 역할을 하는 요소를 찾아내고, 그 요소들의 정형화 및 표준화 작업을 통해 고층사무소건물의 매스구성을 보조하는 전문가 시스템을 개발하는데 그 목적을 두었다. 본 연구에서 얻어진 결론을 요약해보면 다음과 같다. 건축설계작업 중 매스구성 단계를 제한조건을 만족시켜나가는 제한조건 만족모델로 인식할 수 있었으며, 이 제한조건의 일부를 체계화하여 건물의 매스구성을 보조할 수 있는 시스템을 개발하는 것이 가능하였다. 또, 개발된 시스템을 실제 사례를 통해 평가해 본 결과 타당성 있는 결과물을 산출할 수 있었다. In architecture, the expert system helps architects reduce unnecessarily repeated process. It also serves as a tool of linking patterned processes such as medeling and information provision, with unpatterned processes like decision-making process which can produce different results depending on the situation. This study is devoted to develop an expert system which is helpful to find out the important factors in massing process and to assist the massing of high-rise office buildings through patternization and standardization. The conclusion from the study as follows; It is definitely possible to make the expert system recognize the massing process as a process of meeting all the constraints on a step-by-step basis. So, the developed expert system can assist the massing process by systemizing parts of the constraints. It also proved that the developed knowledge-based system can produce proper outputs as its test showed during the study.

Helicobacter pylori 양성인 소화성 궤양 및 위염 환자에서 Helicobacter pylori 제균에 대한 판토프라졸 포함 삼제 요법의 임상효과 및 내약성에 대한 연구

서영호,이완식,주영은,김현수,최성규,유종선,김행재,서순팔,김세종 최신의학사 2000 最新醫學 Vol.43 No.11-12

새마을 主産團地의 營農實態 比較硏究

徐大振,李宗玉,鄭鉉承,崔元凱,姜鎬允 진주산업대학교 1981 論文集 Vol.19 No.-

The purpose of this study were to find the actual condition of the co-operative group farming in Korea, and to improve the low income Saemaul villages by the adoption of good points in co-operative Group farming. There were so many co-operative farmings in Korea, but all of them were not so successful, Eight co-operative group farmings were chosen to investigate for the above purposes. (Table 1). The tendency of agricultural income was not always true. First of all, Co-op Poultry farm did not follow the order of agricultural income. Because there was an excellent leader who had eliminated the circulation expenses in process of the purchase of feeds and the sale of eggs in common, Second, Seachiodong flower were devived into two parts the cultural flower and the sale flower. The cultural flower meant mainly producing flowers and the sale flower mainly selling flowers to downtown shops in Seoul. The income per householder of the cultual flower was less than that of the sale flower. Consequently, sucessful Co-operative Group farmings had an able leader, and performed production and sale more reasonablly.

실기종목에 따른 중학교 체육수업의 실제 학습시간 비교

서봉한,황영성,이종현,오영도,이중숙 釜山大學校 附設 體育科學硏究所 1998 體育科學硏究所 論文集 Vol.14 No.-

The purpose of this study is to investigate the academic learning time of basketball, valleyball, vault horse, and balance beam teaching in physical education of junior high school. The subjects were 16 junior high school students living in U city, and their classes were recorded on video tape. The analatic methods were 5 seconds observation with BESTPED system, monitor stop and recording survey of Academic Learning Time-Physical Education. To analyze the academic learning time, independent varieables was set to practical carriculum(basketball, valleyball, vault horse, and balance beam) and dependent varieables were set to the academic learning time. To testify the relation between the independent varieables and the dependent varieables, dependent t-test was accomplished ar α=.05 level. The results were as follows; 1. In the comparison of ball game with gymnastics, position movement(p=.0004), practice(p=.0023), implement preparation(p=.0001), exercise(p=.000) and deviation(p=.000) brought out the differences. Also, waiting(p=.0001), watching(p=.0037) and information transmission(p=.0157) brought out the differences too, but information reception and interaction didn't. 2. In the comparison of basketball, position movement(p=.0438), practice(p=.0012), exercise(p=.0012) brought out the defferences but implement preparation didn't. Also, information reception(p=.0001), interaction(p=.0049), information transmission(p=.0000) and waiting(p=.0377) brought out the differences too, but watching didn't. 3. In the comparison of vault horse with a balance beam, practice(p=.0230) and exercise(p=.0003) brought out the differences but position movement, implement preparation, and deviation didn't. Also, information reception(p=.0013) and waiting(p=.0013) brought out the differences too, but interaction, information and watching didn't.

긴장형 두통환자에서의 근막이완술이 뇌혈류 속도에 미치는 영향

서현규,한종만,이동호 대한정형물리치료학회 2002 대한정형도수물리치료학회지 Vol.8 No.2

The aim of study carried out to determine the effects of myofascial release on the cranial arteries velocity from November 11, 2001 to March 29, 2002 the objects were 10 patients who having the tension-type headache at H-hospital This research compared with measure the mean flow velocity middle cerebral artery, posterior cerebral artery, vertebral cerebral artery. Result obtain were as follows; 1. Middle cerebral artery blood velocity between pre treatment and after treatment for 10days experiment was significantly increased 9.76㎝/s(p<0.05)in right, 4.88㎝/s(p<0.05)in left. 2. Posterior cerebral artery blood velocity between pre treatment and after treatment experiment was difference 6.35㎝/s(p<0.01)in right, 5.14㎝/s(p<0.01)in left, between pre treatment and after treatment for 5days experiment was 11.48㎝/s(p<0.01)in right, 10.74㎝/s(p<0.01)in left, between pre treatment and treatment for 10days experiment was 12.92㎝/s(p<0.001)in right, 12.68㎝/s(p<0.001) in left. 3. Vertebral artery blood velocity between pre treatment and post treatment experiment was difference 4.48㎝/s(p<0.05)in right, 6.10㎝/s(p<0.05)in left, between pre treatment and after treatment for 5days experiment was 12.50㎝/s(p<0.001)in right, 14.40㎝/s(p<0.001)in left, between pre treatment and after treatment for 10days experiment was 14.70㎝/s(p<0.001)in right, 13.90㎝/s(p<0.001)in left.

서양산 고추냉이 추출물이 함유된 세치제의 효능에 대한 임상적 실험연구

서현우,박호원,김종수,이시영,신일식 大韓小兒齒科學會 2012 大韓小兒齒科學會誌 Vol.39 No.1

The purpose of this study was to find out the effect of dentifrice containing Horseradish (Armoracia rustica) root extracts on improvement of oral hygiene. The clinical evaluation was done participated by 80 adults volunteers who provided a informed consent for their participation. The participants were divided into two groups ; control group (using toothpaste without Horseradish extracts) and experimental group (using toothpaste containing Horseradish extracts). The checklist of the experiment includes the plaque index, gingival index and anti-caries activity. The anti-caries activity was measured by cultivating Streptococcus mutans for 48 hours then estimating the number of increased bacteria using Dentocult SM. The double-blind method was used in this study. The results of this study can be summarized as follows; 1. The plaque formation decreased 28% in control group, 58% in experimental group using dentifrice with Horseradish extracts compared to baseline data. 2. For gingival index, control group and experimental group showed 26% and 40% decrease compared to baseline data, respectively. 3. The score of caries activity test decreased by 4% for control group and 69% for experimental group compared to baseline data. According to the results, a dentifrice containing Horseradish extracts can improve oral hygiene. 식물성 자연추출물 중 하나인 고추냉이 추출물을 배합한 세치제의 구강환경 개선 효과를 알아보기위해 총72명을 대상으로 교차실험 및 이중맹검법을 실시하여 치면세균막지수, 치은염지수 및 우식활성도검사 등을 비교 검토한 결과 다음과 같은 결 론을 얻었다. 1. 치면세균막지수는 초기값에 비해 대조군은 28%, 고추냉이 추출물 배합세치군은 58%의 억제효과를 나타내었다. 2. 치은염지수는 초기값에 비해 대조군은 26%, 고추냉이 추출물 배합세치군은 40%의 억제효과를 나타내었다. 3. Dentocult-SM을 이용한 우식활성도 평가에서는 초기값에 비해 대조군은 4%, 고추냉이 추출물 배합세치군은 69%의 억제효과를 나타내어 고추냉이 추출물 배합세치군이 대조군에 비해 유의할만한 Streptococcus mutans 억제효과를 나 타내었다. 이상의 결과들로 보아 고추냉이 추출물을 배합한 세치제는 치면세균막 억제와 치은염의 감소 그리고 우식활성도 억제에 중 요한 역할을 하여 구강환경 개선에 뛰어난 효과를 보이는 것으로 사료된다.

자연정화공법에 의한 하수처리장에서 최적 여재 선정

서동철,이홍재,조주식,박현건,김형갑,허종수 한국환경농학회 2003 한국환경농학회지 Vol.22 No.1

농어촌 등에서 소규모로 발생하는 하수를 환경친화적이고 높은 하수처리효율을 유지하면서 하수처리장의 장기간 사용을 위한 최적의 여재를 선정하기 위하며 자연정화공법을 이용한 소형하수처리장치를 호기성조 및 혐기성조로 구분하여 시공한 다음, 하수처리량 및 여재 입경별 수처리 효율을 조사하였고, 호기성조와 혐기성조에서 여재 입경별 하수의 투수속도를 조사한 결과는 다음과 같다. 호기성조 처리수 및 방류수중의 pH 및 EC는 여제입경에 따라서 별 차이가 없었고, 용존산소는 호기성조를 동과한 호기성조 처리수의 용존산소는 큰 폭으로 증가하였으나 혐기성조를 통과한 방류수의 용존산소는 호기성조 처리수에 비해 약간 감소하여 여재입경 및 하수처리량에 따라서 별 차이가 없이 약 2.4~5.1 mg/L정도이었다. BOD,000 및 탁도 처리율은 여재 대(4~10 mm)를 사용했을 경우에도 호기성조 처리수에서 BOD 처리율은 약 91%이상, COD 처리율은 73%이상, 탁도 처리율은 83%이상이었으며, 이들 처리율은 여재입경이 작을수록 증가하였고 모든 조건에서 방류수중의 BOD 처리율은 98%이상, COD 처리율은 91%이상, 탁도 처리율은 98%이상이었다. 여재입경별 총 질소 및 총 인 처리율은 여재입경이 작을수록 약간 증가하였고, 모든 조건에서 방류수중의 총 질소 처리율은 약 45~59%, 총 인 처리율은 약 80~96% 정도이었다. 하수 처리율 및 투수속도를 고려해 볼 때 하수처리장 호기성조의 최적입경은 2~4 mm정도 혐기성조의 최적입경은 0.1~4 mm정도가 적절한 젓으로 사료되었다. 따라서 이러한 조건을 자연정화공법을 이용한 하수처리장에 적용하면 높은 하수처리효율을 유지하면서 하수처리장의 공극폐쇄현상이 일어나지 않아 장기간 운전할 수 있을 것으로 판단된다. An investigation was carried out to evaluate the effects of pebble size on the small-scale sewage treatment apparatus by natural purification method that consisted of aerobic and anaerobic plot pH and EC in both plots varied minimally regardless of pebble size. DO in aerobic plot increased as the pebble size decreased. That in the anaerobic plot was slightly less in comparison with that of the aerobic plot, but varied minimally, 2.4~5.1 mg/L regardless of pebble size. Under all experimental conditions, removals of BOD, COD and turbidity in anaerobic plot were more than 98, 91 and respectively. Removals of T-N and T-P increased as pebble size decreased. Under all experimental conditions, removals of T-N and T-P in anaerobic plot were about 45~59 and 80~96%, respectively. Judging from the above results, it should be considered that the optimum pebble size and pebble permeability in both plot was 2~4 mm and 0.1~4 mm, respectively.

Silicone rubber 멤브레인을 이용한 압저항형 저차압센서의 개발

서창택,공성수,심준환,고광락,서현미,김영진,설철규,신장규,이종현 경북대학교 센서기술연구소 1998 센서技術學術大會論文集 Vol.9 No.1

A 4-beam piezoresistive differential pressure sensor using a silicone rubber membrane has been fabricated on the selectively diffused (100)-oriented n/n^(+)/n silicon substrates by an unique silicon micromachining technique using porous silicon etching. The width, length, and thickness of the beam is 120 μn, 600 μm, and 6 μm, respectively, and the thickness of the silicone rubber membrane was 36 gm. By the use of four-beam structure, the mechanical strength of the differential pressure sensor can be highly improved due to smaller shear stress. And the lower sensitivity of the sensor can be simply solved by combining two output signals of half-bridge. The effectiveness of the sensor is confirmed through an experiment and FEM simulation in which the differential pressure sensor is characterized.

마사지 요법이 고혈압 환자의 혈압에 미치는 영향

김종우,서현규,박윤기 대한정형물리치료학회 2003 대한정형도수물리치료학회지 Vol.9 No.2

To closely examine the effects of the massage treatment as one method of curing hypertension by exploring the effects that one-time circulation-centered massage has on a hypertensive's blood pressure, this study selected as the subject ten among fifty-yea-old essential hypertensives visiting N clinic, and measured and compared their blood pressures before and after I gave them massage. After stabilizing them, I measured their b l d pressures. In their prone and supine postures, I gave them rubbing massage for twenty minutes from positions proximal to their hearts to ones distal from their hearts to help their artery circulation and circulation-centered strong massage for ten minutes from positions distal from their hearts to ones proximal to their hearts to help their vein circulation. After the massage, I had them rest for five minutes and measured their blood pressures. Regarding each item analyzed, I calculated the mean and standard deviation before and after the massage. The difference before and after the massage was tested by corresponding t-test and the level of significance was made p<0.05. The findings are as follows. First, systolic pressure was 157.70±7.48 before the massage and 143.00±9.39, which is less than before the massage, after the massage, showing statistically significant difference (p<.05). Secondly, diastolic pressure was 97.80±6.56 before the massage and 95.20±5.18, which is less than before the massage, after the massage, not showing statistically significant difference (p <.05).