저체중 또는 과체중 청소년에서 캠프 프로그램을 이용한 영양 교육효과에 관한 연구

성미경,승정자,류화춘,박재년,박동연,최미경,조경옥,최선혜,이윤신,김유경,이은주 대한지역사회영양학회 2003 대한지역사회영양학회지 Vol.8 No.4

This study was performed to evaluate the effectiveness of a nutrition education program developed for nutritionally imbalanced adolescents. A summer nutrition camp was held for 23 overweight and 16 underweight subjects. Its effectiveness with regard to was evaluated at the end of the camp and 6 months later. Nutrition knowledge, nutritional attitude, food behavior, nutrient intake, exercise habit and ideal body figures desired by the subjects. The results showed significantly higher nutrition knowledge scores at the end of the camp as compared to those obtained prior to the camp program, and these scores were maintained for at least six months. Nutrition attitude scores also improved after the education program, and these improved scores also lasted for 6 months. However, the food behavior scores measured 6 months after the education program were not significantly different from those obtained prior to the camp. Also, the exercise habit, the ideal body figures and the body figures desired by the subjects remained unchanged. When nutrient intakes of subjects were assessed before the program and 6 months later, the mean daily vitamin C intake was significantly increased after the education program. Also, the intake of iron from plant food sources increased in the overweight subjects, while less iron from animal source were consumed by the underweight subjects. Both groups tended to consume more vegetables and fruits 6 months after the education program which may have contribute to the higher vitamin C and plant-based iron intakes. These results indicate that a 4-day nutrition education camp program sustained changes in nutrition knowledge and nutrition attitude for 6 months. The increased intake of vegetables and fruits was also achieved through this education program. However, changes in dietary behavior in adolescents may require repeated education.

남·북한 초등학교과정 과학교과서 비교분석 연구 : 물리영역중심으로

박재호,김학수,배옥경 부산대학교 사범대학 과학교육연구소 1996 科學敎育硏究報 Vol.23 No.-

Science textbook in South Korea(5th revised) and North Korea(current) are compared and analysed. The present study shows differences between both science textbooks which may be utilized in future after unification of the two countries. In primary education the south has more than the north in the page number of the textbook. In North Korean educational systems, the idolization of Kim Il-Sung and Kim Jung-Il is apparent. The textbooks of South Korea are made of better materials than those of North Korea. Covers, and illustrations are also of higher quality. Compositions are common in both country's textbooks as they deal with common everyday subjects. South Korean learns science uniformly. However, North Korean takes the unconnected, undeveloped, and ideological pass and also promotes the cramming as a system of education. In scientific terms, North Korea's textbooks show the differences in name, presentation.

都市邊方地域住民의 有病率과 醫療施設 利用實態에 關한 調査硏究

朴敬玉 全北大學校 醫科大學附設 看護專門大學 1981 논문집 Vol.7 No.-

A study was carried out in order to determine the statues of prevalence and medical care among residents living in suburban area around Jeonju City, Jeonbug province for six months from November 1979 to April 1980. 3813 persons over 15 years old among 5748 persons living in Song Cheon-Dong were Chosen for this study. The study results obtained were as follows ; 1. The average member of family were 5.02±2.0, and 49.4 per cent of the total household studied were engaged in farming. 2. 2,919 persons among 3,813 persons responded to the study and the response rate were 76.6 per sent, of the total people to be studied. 3. 14.9 per cent of people studied had no education 130.5 per cent 30.5 per cent graduated from primary school, 22.2 per cent from middle school, 23.8 per cent from high school, and 8.6 per cent from college of university. 4. 43.0 per cent of the total respondents had no occupations, 16.4 per cent farmers, 11.7 per cent students. 17 per cent of males and 67.4 per cent of females had no occupations. 5. Prevalence rates of diseases and sickness for six months during the study period (from Nov. 1979 through Apr. 1980) were 561.9 per 1,000 persons for males and 664.0 for females. 6. The age-specific prevalence rates for the person under 30 years of age were 300-400 per 1,000 persons in male as well as in female, while the higher prevalence rates showed in the old peoples. 7. The diseases and sickness were classified by the International classification of Diseases and Sickness, and the most prevalent disease was respiratory disease and the rate was 148.0 per 1,000 persons for six months, and the next was the disease of nervous system and sense organs (120.2 per 1,000 prs) and the third was symptoms, senility and illdefined conditions (106.2 prs.). 8. The difference in prevalence rates by sex was not significant. However, the prevalence rate of the disease of nervous system and sense organs for females were two times higher than that of males. 9. The highest prevalent rate was 133.6 in farmers and the next was 122.9 in laborers, prevalence rates of public servants, company employees, and students were 87.2, 66.3 and 59.9 respectively. 10. Incidence rates of disease for six months were 397.1 per 1,000 persons, and 380.9 for males and 413.0 for females. 11. 22.5 per cent of the total patients did not seek medical care, 27.9 per cent utilized hospital of clinics, 32.9 per cent got helps from pharmacy, and 12.3 per cent were treated by herb medicine. 12. Of the partients who used medical facilities, 65 per cent of hospital of clinic utilizing patients, 32.8 per cent of those receiving medical cares at health center, 44 per cent of those utilizing pharmacies, 51.4 per cent of those taking herb medicine was completely cured or getting improved. Proportion of complete cure of improved was 42.5% among 1749 cases.

소흑산도 및 하의도의 海産魚類 목록

朴炅洋,李完玉 木浦大學 沿岸生物 硏究所 1988 沿岸生物硏究 Vol.5 No.1

A list of the fishes collected inshore waters of the Sohuksan island, and the Haui island, Chollanam-do, from April to September in 1988, was shown. The specimens of fishes were classified into 74 species of 56 genera in 38 familes.

ZnO첨가에 따른 0.67Pb(Mg_(1)/3NB_(2/3)-0.33PbTiO_(3) 세라믹스의 상전이 온도와 압전특성의 변화

박준영,김옥경 한양대학교 이학기술연구소 2005 이학기술연구지 Vol.8 No.-

ZnO첨가에 따른 0.67PMN-0,33PT 세라믹스의 상전이 온도, 유전 및 압전 특성의 변화를 조사하였다. ZnO를 첨가하지 않은 시편의 경우 소결 온도가 1,100℃인 반면, ZnO를 0.2wt%첨가한 시편의 경우 1,000℃에서 이미 소결 완료 되었으며 이것은 ZnO가 소결을 촉진시키는 재료로 작용하였으며 이러한 결과는 시편의 수축률 기공률, 밀도측정 결과로 부터 확인할수 있었다. XRD 분석결과ZnO를 첨가한 시편에서 pyrochlore상과 어떠한 불순물도 존재하지 않았으며. 이는 Columbit precursor법과 PbO 과잉첨가법을 병행하였기 때문이며, ZnO 첨가에 따라 결자상수가 증가하고T_(max)가 고온쪽으로 이동하는 것으로 보아 Zn^(2+) 의 일부가 Mg^(2+)자리에 치환하여 들어간 것으로 생각된다, 온도에 따른 유전특성 결과로 부터 소량의 ZnO만을 첨가 하여도 ZnO를 첨가하지 않은 시편과 비교해 볼때 현저한 유전특성의 향상을 보였고 900℃에서 2시간 소결한ZnO 02wt%첨가 시편은 최대 유전상수가 22,000이었다. ZnO첨가에 따른 0.67PMN-0.33PT세라믹스의 압전특성 결과로부터 0.2wt% 첨가한 시편의 경우 36%의 Kp값을 보였고, 0.2wt%를 초과 하면서 부터는 점차 감소하는 경향을 보였다, 이러한 압전특성 결과로 부터 ZnO는 물질내에서 donor및 acceptor로 작용하고 있다는 것을 알 수 있었다.

KISE-기초학력검사(KISE-BAAT)개발연구

박경숙,김계옥,송영준,정동영,정인숙 국립특수교육원 2004 연구보고서 Vol.- No.12

본 연구는 학교 학습 특히. 국어와 수학에서 부진을 나타내는 아동을 선별 또는 진단하고, 이들이 부진을 나타내는 영역과 수준을 파악하여 이들의 교육계획 수립과 적용에 필요한 정보를 제공할 수 있는 개인용 기초학력 검사(Korea Institute for Special Education-Basic Academic Achievement Tests KISE-BAAT)의 개발을 위해 기초학력의 개념과 기초학력의 구성요인 등을 탐색하여 KISE-BAAT의 구성모형을 개발한 다음, 그 모형을 토대로 검사문항의 성취기준을 설정하고, 그에 따라 제7차 교육과정의 내용을 토대로 범교과적으로 통용할 수 있는 KISE-BAAT의 검사문항을 개발하였다. 본 연구는 유ㆍ초ㆍ중ㆍ고등학교 및 대학교의 학생 1,499명을 대상으로 KISE-BAAT의 예비검사를 실시하고, 그 결과를 토대로 검사문항의 변별도와 양호도 등을 분석하여 최종 검사문항을 선정하였다. 그리고 본 연구는 KISE-BAAT의 표준화를 위해 전국의 유치원, 초등학교와 중학교에 재학중인 5~l4세의 아동 5,977명을 대상으로 검사를 실시하여 규준의 작성 및 해석에 필요한 기초 통계를 산출하였으며, 신뢰도와 타당도를 검증하였다. 본 연구의 결과를 요약하면 다음과 같다. 첫째, 본 연구는 학력을 기초학력 과 심화학력으로 구성 된다고 가정 하여 심화학력에 의 한 학업성취를 제외한 학업성취를 기초학력으로 규정하고, 만 5세부터 14세까지 아동의 기초학력을 측정하는 개인용 기초학력검사인 KISE-BAAT를 개발하였다. KISE-BAAT는 KISE-BAAT(읽기), KISE-BAAT(쓰기), KISE-BAAT(수학)의 3개 검사로 구성되는 복합심리검사(battery)로서 각각의 소검사는 가형과 나형 2종의 동형검사로 구성되어 교육 프로그램의 사전ㆍ사후효과, 일반화 및 전이효과 측정을 용이하게 하며, 백분위수ㆍ환산점수ㆍ학력지수 학년규준의 제시로 아동의 기초학력의 지체 여부와 정도에 대한 진단과 더불어 교육계획의 수립ㆍ시행 및 평가에 활용할 수 있도록 하였다. 따라서 KISE-BAAT는 학교학습의 도구가 되는 읽기ㆍ쓰기ㆍ수학의 기초학력을 종합적으로 측정할 수 있으며, 결과를 다양하게 분석할 수 있는 개인용 기초학력검사라 할 수 있다. 둘째, KISE-BAAT의 신뢰도를 검증한 결과, 동형검사 신뢰도계수는 KISE-BAAT(읽기) 가형과 나형 .82, KISE-BAAT(쓰기) 가형과 나형 .69, KISE-BAAT(수학) 가형과 나형 .89로 나타났고, 반분신뢰도 계수는 KISE-BAAT(읽기) 가형 .93, 나형 .92, KISE-BAAT(쓰기) 가형 .91, 나형 .94, KISE-BAAT(수학) 가형과 나형 모두 .98로 나타났으며, 문항반응이론 신뢰도 계수는 KISE-BAAT(읽기) 가형과 나형 모두 .90, KISE-BAAT(쓰기) 가형 .99, 나형 .96, KISE-BAAT(수학) 가형 .97,나형 .99로 나타났다. 그리고 측정의 표준오차는 KISE-BAAT(읽기) 가형 .76, 나형 .85, KISE-BAAT(쓰기) 가형 .90, 나형 .92, KISE-BAAT(수학) 가형 2.11, 나형 2.32로 나타났으며, 재검사 신뢰도 계수는 KISE-BAAT(읽기) 가형 과 나형 모두 .96, KISE-BAAT(쓰기) 가형 .95, 나형 .96, KISE-BAAT(수학) 가형과 나형 모두 .98로 나타났으며, 문항의 내적 일치도 계수도 KISE-BAAT(읽기) 가형과 나형 모두 .98, KISE-BAAT(쓰기) 가형과 나형도 모두 .98, KISE-BAAT(수학) 가형과 나형 모두 .99로 나타났다. 따라서 KISE-BAAT의 KISE-BAAT(읽기), KISE-BAAT(쓰기), KISE-BAAT(수학) 가형과 나형은 모두 측정학적으로 아동의 기초학력을 측정하는데 있어 일관된 수치와 정보를 제공해 주는 도구라 할 수 있다. 셋째, KISE-BAAT의 타당도를 검증한 결과, KISE-BAAT(읽기) 가형ㆍ나형과 KEDI-기초학습기능점사 읽기Ⅱ의 상관계수는 각각 .50, .56, KISE-BAAT(쓰기) 가형ㆍ나형과 KEDI-기초학습기능검사 읽기Ⅰ의 상관계수는 각각 .68, .67, KEDI -기초학습기능검사 쓰기와 상관계수는 각각 .51, .68, KISE-BAAT(수학) 가형ㆍ나형과 KEDI-기초학습기능검사 셈하기의 상관계수는 각각 .70, .75로 나타났다. KISE-BAAT와 KEDI-기초학습기능검사는 매우 다른 영역과 내용으로 구성되어 있고, 서로 다른 개념을 기초로 제작된 것이나 두 검사간의 상관계수는 비교적 양호한 상태라 할 수 있다. 그리고 구인 타당도의 한 측면을 나타내는 KISE-BAAT 검사영역 상호간 상관계수는 전체적으로 KISE-BAAT(읽기) 가형이 .23에서 .93을, 나형이 .19에서 .91을 범위로 하고 있으며, KISE-BAAT(쓰기) 가형이 .70에서 .95를, 나형이 .73에서 .95을 범위로 하고 있고, KISE-BAAT(수학) 가형이 .81에서 .94를, 나형이 .83에서 .94를 범위로 하고 있다. 따라서 KISE-BAAT는 개발의 과정에서부터 이루어진 내용 타당도의 확보를 위한 노력 등으로 기초학력을 측정하는데 타당한 도구라 할 수 있다. 따라서 본 연구에서 개발한 KISE-BAAT는 아동들의 읽기ㆍ쓰기ㆍ수학 기초학력을 측정하는 신뢰롭고 타당한 개인용 기초학력검사라 할 수 있다. 그러나 KISE-BAAT는 연구 수행상의 제한점과 함께 앞으로 활용의 과정에서 나타나는 문제점을 계속 수정 보완해야 한다. 뿐만 아니라 KISE-BAAT는 문항 편파성 분석 (item bias analysis)과 일반화 가능도 분석에 대한 연구와 더 폭넓은 타당도 분석을 위해 사고력 검사나 다른 학력검사와 공인타당도 분석 등을 연구해야 한다. 그래야만 KISE-BAAT는 아동의 기초학력을 진단 평가하는데 더욱 유용하고 정교한 검사로 발전해 갈 수 있을 것이다. The purpose of this study is to develop a basic academic achievement test battery, KISE-BAAT(Korea Institute for Special Education-Basic Academic Achievement Tests) which provides information about a student's achievement and performance in reading, writing and math. In order to develop the test battery the concept and construct of basic academic achievement were investigated. Subsequently the framework of the test battery was developed, the achievement standards of test items were established and test items were developed based on the current seventh national curriculum. The item tryout of KISE-BAAT was administered to 1,499 students in grades K, 2, 5, 8, 12 and in college. Item difficulty and discrimination data were obtained. Items were selected by reviewing all data available. The national standardization was administered to 5,977 students in grades K through 9. Data obtained from the standardization test used to develop national norms for the test and reliability and validity of the test. The results of the study is as follows. First, KISE-BAAT, a test battery for an individual, consists of three tests of reading, writing and math. Each test has Form A and Form B. KISE-BAAT is used to assess the achievement of an individual student of age 5 through 14. The data can be used for general instruction, remedial instruction and evaluation of an educational program. Second, Several methods were used to estimate the reliability of KISE-BAAT. Alternate-form reliability coefficient of KISE-BAAT(Reading) is .82, KISE-BAAT(writing) .69, KISE-BAAT(Math) .89. As for Split-half Reliability coefficient of each alternate form of KISE-BAAT(Reading) shows .93 and .92. In KISE-BAAT(writing) .91 and .94 are presented. In KISE-BAAT(Math) .98 in common. Item response theory reliability coefficient of each alternate form of KISE-BAAT(Reading) are .98 in common. In KISE-BAAT(writing) .90 and .92 are presented. In KISE-BAAT(Math) .97 and .99 are presented. The standard error of measurement of each alternate form of KISE-BAAT(Reading) is .76 and .85, for KISE-BAAT(writing) .90 and .92 and for KISE-BAAT(Math) 2.11 and 2.32. Test-retest reliability coefficient of each alternate form of KISE-BAAT(Reading) are .96 in common. In KISE-BAAT(writing) .95 and .96 are presented. In KISE-BAAT(Math) .98 is presented in common. Third, the criterion-related validity of KISE-BAAT in terms of the relationship with KEDI-Basic Academic Ability Test was examined. The validity coefficient of each alternate form of KISE-BAAT(Reading) and Reading II of KEDI-Basic Academic Ability Test showed .50 and .56 repectively. The validity coefficient of each alternate form of KISE-BAAT(Writing) and Reading I of KEDI-Basic Academic Ability Test showed .68 and .67 respectively. Reading I of KEDI-Basic Academic Ability Test was matched to KISE-BAAT(Writing) since it has features of writing ability. The validity coefficient of each alternate form of KISE-BAAT(Reading) and Writing of KEDI-Basic Academic Ability Test showed .51 and .68. The validity coefficient of each alternate form of KISE-BAAT(Math) and Computing of KEDI-Basic Academic Ability Test showed .70 and .75. As for intercorrelation coefficents between subtests KISE-BAAT(Reading) range form .23 to .93. In KISE-BAAT(Writing) from .70 to .96 and in KISE-BAAT(Math) from .81 to .94. Based on all the data mentioned above KISE-BAAT can be said a reliable and valid test battery which assess students' ability in reading, writing and math. However, KISE-BAAT should be modified and complemented in order to compensate its own limitations. Future research on item bias analysis and generalizability needs to be done. Criterion-related validity to examine the relationship with other psychological tests or achievement tests also should be done to validate KISE-BAAT further. Case studies and suggestions from test users will also contribute to improve KISE-BAAT.

氣化器附着 4行程機關에서 消音器(Muffler)의 性能에 關한 硏究

朴明圭,車京玉 明知大學校 産業技術硏究所 1991 産業技術硏究所論文集 Vol.10 No.-

In this study, Performance of muffler is studied at constant velocity of carbureted 4 stroke engine. Pressure fluctuation was measured by pressure transducer at muffler, and performance of a muffler was investigated through transfer function analysis by analyzer. The experimental results show that remarkable attenuation in exhaust noise was accomplished and characteristics of muffler was discussed in detail in connection with associated experimental data.

정서강도와 정서인식의 명확성, 정서조절양식이 대인관계에 미치는 영향

박경옥,박기환 가톨릭대학교 사회과학연구소 2007 社會科學硏究 Vol.23 No.-

본 연구는 정서강도, 정서인식의 명확성, 정서조절양식이 대인관계 성향에 어떤 영향을 미치는지를 살펴보았다. 다시 말해, 정서표현갈등이 대인관계와 유의한 상관이 있다는 연구를 토대로, 정서를 표현하기 위해 선행되어야 할 정서강도 정서인식의 명확성, 정서조절양식이 대인관계에 미치는 영향을 살펴봄으로써 내담자의 대인관계 문제를 해결하기 위해 어떤 정서적 특징들을 다루어야 하는지를 탐색하는 것이 본 연구의 목적이었다. 이를 위해 서울과 충청지역에 소재하고 있는 대학교의 대학생 322명을 대상으로 정서강도, 정서인식의 명확성, 정서조절양식, 그리고 대인관계 성향을 측정하기 위한 설문조사를 실시하였다. 본 연구의 결과는 다음과 같다. 첫째, 정서강도는 대인관계 성향과 모두 상관이 있었으나, 특히 사회관계성향과 상관이 높았다. 둘째, 정서인식의 명확성은 대인관계 성향 중 사회 관계성향과 상관이 높았다. 셋째, 정서조절양식 중 능동적 양식은 대인관계 성향 모두와 상관이 있었으나, 그 중 역할성향과 상관이 가장 높았다. 회피분산적 양식은 표현성향과 상관이 높았으며, 지지추구적 양식은 사회관계성향과 상관이 높았다. 본 연구 결과는 내담자가 정서를 경험하는 정도, 내담자가 자신이 느낀 정서를 얼마나 명확히 아는지의 정도, 내담자가 사용하는 정서조절양식을 상담자가 잘 이해하게 되면, 대인관계에서 정서표현을 어려워하는 내담자를 더 효율적으로 도울 수 있다는 것을 시사한다. In this research, we studied the relationship of emotional intensity, emotional clarity and emotion regulation style with interpersonal relations, based on the assumption that emotion is included in interpersonal relations(Lehman, Ellard, & Wortman, 1986). This is on the basis of the research that ambivalence in emotional expression is closely connected with interpersonal relations. Therefore it is important to investigate the effects of emotional intensity, emotional clarity and emotion regulation style on interpersonal relations. 322 undergraduate students were asked to complete the questionnaires of emotional intensity, emotional clarity and interpersonal relations disposition. The results were summarized as follows: First, emotional intensity had significantly related to all interpersonal relations disposition, especially it was closely related to the social relations disposition. Second, emotional clarity was closely correlated with social relations disposition among the interpersonal relations disposition. Third, active style among the emotion regulation style was correlated with all interpersonal relations disposition, especially it was closely related to role disposition. And avoidance style was closely related to expression disposition. Lastly, support-seeking style was closely related to social relations disposition. This results can be used as a basic data for counselor to solve the client’s problems of interpersonal relations. If the counselor can understand the emotion regulation style of the client, the counselor may easily help the client who has experienced a difficulty of emotional expression in interpersonal relations.

고추재배를 위한 시설하우스 폐양액의 재활용

박창진,양재의,김경희,유경열,옥용식 한국환경농학회 2005 한국환경농학회지 Vol.24 No.1

본 연구에서는 시설하우스 폐양액이 고추의 생육과 양분 흡수에 미치는 영향을 평가하고 폐양액 관주시 부가적으로 얻을 수 있는 관개 효과를 산출함으로써 폐양액의 토양 시비에 따른 농업적 가치를 평가하였다. 시설하우스 폐양액의 토양 곽주시 Ca, Mg, K 등 염류의 증가로 인하여 pH와 EC는 상승하였고, 총질소는 암모늄태 질소와 질산태 질소의 증가와 함께 처리 후 100 mg kg^(-1) 이상 증가하였다. 고추 생육은 화학 비료 70% 및 폐양액 30% 혼합처리구와 화학비료 50% 및 폐양액 50% 혼합치리구에서 양호하였으며 양분 흡수도 동일한 경향을 나타내었다. 고추 수확량은 화학비료 70%, 및 폐양액 30% 혼합처리구에서 가장 높은 것으로 조사되었다. 1일 발생되는 폐양액(288 L 10 a^(-1)day^(-1))을 토양에 시용하여 증발산되는 수분을 보충할 경우 최고 409.86 m²의 면적을 관개할 수 있는 것으로 산출되었다. 이상의 결과를 통해 폐양액의 토양 처리는 화학비료 대체 효과와 폐양액의 정화 효과를 동시에 얻을 수 있으며 적정량 사용시 주변 환경에 미치는 영향을 최소화하면서 지속적인 처리가 가능할 것으로 판단되었다. Waste of the hydroponic solution from the plastic film house cultivation was recycled to grow the red pepper(Capsicum annum L.) in upland fields as supplement for plant nutrients and irrigation sources. Application of hydroponic waste solution increased the pH and EC of the soils, coupled with the increases in the concentrations of exchangeable cations(Ca, Mg, and K), total nitrogen, NH₄-N, and NO₃-N. Growth and yield of red pepper were highest when the treatment of chemical fertilizer(70%) was combined with hydroponic waste solution(30%). Amounts of the daily producing hydroponic waste solution were 2,880 L ha^(-1) day^(-1) from the experimental facilities and this could irrigate 409.86 m?of area to compensate for the amount of water loss by evapotranspiration(3%). The overall results demonstrated that hydroponic waste solution could be recycled as plant nutrients and irrigation water resources for enhancing soil fertility and environmental quality.

난용성 유기 화합물의 용해, 확산 및 생분해에 대한 Rhamnolipid (Biosurfactant)의 영향

박종옥,김경순 경성대학교 2001 論文集 Vol.22 No.1

Pseudomonas aeruginosa rhamnolipid biosurfacnant enhanced solubility, dispersion, and biodegradation of organic compunds with limited water solubility. Rhamnolipid-enhanced organic compound dispersion was found to be dependant on biosurfactant concetration, pH, incubation time, structure of surfactant. All surfactants reduce the surface tension of a liquid medium. The surface tension of rhamnolipid soution was quite sensitive to pH. Organic compounds dispersion in the presence of rhamnolipids was also influenced by pH. Rhamnolipidbiosurfacnant enhanced the aqueous dispersion of octadecane by more than 4 orders of magnitude, from 0.009 to 320 ㎎/liter. Mineralization rates can be increased significantly by rhamnolipid-enhanced octadecane dispersion. The fourfold increase in mineralization was not nearly as high as the 〉104-fold increase in the aqueous dispersion of octadecane. Therefore, although rhamnolipid increase in the dispersion of octadecane, the octadecane is still not freely bioavailable. These results indicate rhamnolipids may have potential to facilitating the biodegradation of hydrocarbons in contaminated soil as well as aqueous environments.