랫드에서 법제유황과 비법제유황의 독성비교

김근수, 정유리, 이남진, 홍성희, 유종훈, 정재황, 강종구 충북대학교 동물의학연구소 2006 Journal of Biomedical and Translational Research Vol.7 No.2

본문참고

水稻作 耕地의 區劃規模에 따른 農業機械의 作業性能(Ⅱ) : 乾畓直播 栽培 Direct-Seeding in dry Land

유수남,구자웅 全南大學校 農業科學技術硏究所 1997 農業科學技術硏究 Vol.32 No.-

본 연구는 건답직파 수도재배의 경우 농업기계 이용측면에서 포장의 대구획화에 따른 경지정리의 적정 구획규모 결정을 위한 기초자료와 영농의 효율화와 생산성 향상을 위한 영농방법 및 이에 따른 기계화 작업체계 수립의 기초자료를 제공하고자 경지구획(경구)의 규모와 형상에 따른 대형 고성능 농업기계의 포장작업능률, 포장작업효율 등을 분석하였으며, 그 연구결과를 요약하면 다음과 같다. 1. 장변 길이가 길어짐에 따라 이앙작업을 제외한 모든 작업에서 포장작업능률과 포장작업효율은 높아지는 것으로 나타났으며, 이에 따라 ha당 총작업소요시간도 줄어들었다. 2. 단변의 길이 증가에 따른 포장작업능률과 포장작업효율은 구동경운, 정지, 파종작업 등에서는 약간씩 증가하였으며, 수확작업에서는 거의 일정하게 나타난 반면, 제초제 살포와 병충해약제 살포 등 방제작업과 추비살포작업에서는 약간씩 낮아지는 것으로 나타났다. 한편 시비작업(기비살포)에서는 단변의 길이 변화에 따라 크게 변동하였다. ha당 총작업소요시간은 대체적으로 방제작업의 비중이 상대적으로 크기 때문에 단변의 길이 증가에 따라 약간씩 감소하는 것으로 나타났다. 3. 포장작업능률은 거의 모든 작업에서 동일한 구획규모에서는 장단변비의 증가에 따라 대체적으로 증가하였으며, 또한 같은 장단변비에서는 구획규모가 클수록 증가하는 것으로 나타났다. 총작업소요시간은 동일한 구획에서는 장단변비가 커질수록 감소하며, 같은 장단변비에서는 구획규모가 클수록 적어짐을 보였다. 그러나 장단변비가 커질수록 포장작업능률 증가율과 총작업소요시간의 감소율은 떨어지는 것으로 나타났다. 4. 대구획화를 위하여 장변의 길이를 길게하는 것은 단변을 길게하는 것보다 거의 모든 작업에서 효과적으로 포장작업능률과 포장작업효율을 높일수 있는 것으로 나타났다. 현행 농업기계 체계를 고려해 볼 때 장변의 길이는 100∼150 m, 단변의 길이는 60∼80 m로 각각 제한되어 적정 구획규모는 약 0.6∼1.2 ha 정도인 것으로 판단되며, 포장의 배수성 개선, 대형 트랙터에 적합한 부착작업기의 채용,포장주행이 가능한 방제 및 추비살포기계의 개발이 이루어진다면 농업기계능률을 높이기 위하여 1.2∼1.6 ha의 구획규모로 경지를 대구획화하는 것이 바람직 할 것으로 보인다. This study was carried out to evaluate the effect of field size on field capacities of farm machines and their operating times for determining the optimum field size in direct-seeding of rice in dry land. As long side length increases, the field capacities and field efficiencies increased and total operating time per ha of the machines decreased in most works. As short side length increases, the field capacities and field efficiencies increased slightly in rotary tilling, pulverizing, and seeding works, and were almost constant in harvesting work. But those were changed irregularly due to the wide effective working width in fertilizing work, and were decreased slightly owing to the time loss for resting in weedicide and pesticide application works. Total operating time per ha of the machines decreased slightly as the short side length increases. As the ratio of long side length to short side length increases under same field size, the field capacities of the machines increased and total operating time per ha of the machines decreased. But, increasing rates of field capacities and decreasing rate of operating time per ha were reduced gradually. In the case of same ratio, field capacities increased and total operating time per ha decreased as the field size increases. Increase of the long side length is more effective than that of the short side length for improving the field capacities of machines and reducing their operating times. Long side length is limited by the loading capacities of chemical distributers and short side length is limited by the effective working width of machines. And therefore long side and short side can be lengthende up to 100 - 150 m and 60 - 80 m, respectively and optimum field size is in the range of 0.6 - 1.2 ha under the current farm machine system. But, if improvement of drainage, and development of chemical distributer which can run in the field are achieved, field size in the range of 1.2 - 1.6 ha is desirable for improving field capacities of machines.

안양시 유치원 교육환경의 실태와 발전 방향 : The Actual Conditions and the Directions for Improvement

최양미,이은상,김영숙,구광현,이수남 안양대학교 인문과학연구소 1998 人文科學硏究 Vol.6 No.1

Abstract Although environmental factors are important in all stages of education, those factors play more significant roles in the field of early childhood education than in any other school settings in that young children grow and develop rapidly and they are very sensitive to environmental elements. Consequently, it is essential to prepare appropriate educational environments for young children in order to maximize the effect of educational efforts. The environment of a kindergarten can be divided into personal environments and physical environments. Personal environments include parents, teachers, peer groups, and other people in the community. On the other hand, physical environments include the site of a school, school buildings, playgrounds, books, and several kinds of educational facilities and materials.The purpose of this study was to analyze the actual conditions of educational environment of kindergartens in Anyang city and to propose the directions for improving the environment. For this purpose, this study reviewed the significance of educational environment of kindergarten and the history of early childhood education in Anyang. In addition, the information on actual conditions of educational environment of kindergartens was collected using a series of questionnaire and the collected data were examined on the basis of the following categories: 1) Curriculum planning and program implementation 2) Educational facilities and teaching materials 3) Heads and teachersThe results of data analysis revealed that, in general, actual conditions of educational environment of kindergartens in Anyang city were appropriate. However, several problems to be solved were also found. Based on the results of the study, following suggestions can be made for improving educational environment of kindergartens in Anyang city: 1) First of all, heads/managers and teachers in the kindergarten should have strong attitudes and make efforts to solve the environmental problems pointed out in this study. 2) In addition, it is necessary to establish an effective corporation system among educational administrative authorities, schools, and other organizations of social education. 3) In parallel with the above, the government should provide not only strict administrative controls but also proper supports to the field of early childhood education for maintaining and improving the quality of educational environment. It seems that these suggestions are consistent with Anyang city's policy to make this city as “a city of hope in the 21th century, the period of localization” and minimum requirements for preparing the implement of kindergarten education as a stage of public education.

Bacillus stearothermophilus KJ16이 생산하는 Cyclodextrin Glucanotransferase의 정제와 효소특성

김병우,김광현,남수완,권현주,송승구,윤종원 동의대학교 기초과학연구소 1999 基礎科學硏究論文集 Vol.9 No.1

Cyclodextrin glucanotransferase from B. stearothermophilus KJ16 that can produce both cyclodextrin glucanotransferase and cyclodextrinase was purified by ammonium sulfate precipitation, DEAE-cellulose chromatography, Sephadex G-100 chromatography, and FPLC. The molecular weight of the purified enzyme was about 65,000 dalton by SDS-PAGE. The optimal pH and temperature were 6.0 and 60℃, respectively. The enzyme was stable at 50℃ for 1 hr and in the pH range of 5.5 and 8.5. Mercaptoethanol and dithiothreitol inhibited the enzyme activity strongly. The enzyme produced 60% cyclodextrin(CD) from 5% soluble starch with the ^α-, ^β-, ^γ-CD ratio of 42 : 46 : 12. Amylopectin was the most suitable with 67% conversion to CD.

관상동맥 질환에서 CD14 유전자형에 따른 세균 및 Heat Shock Protein에 대한 반응의 차이

한주용,최수연,조현주,김화평,강현재,구본권,김남중,김효수,손대원,오병희,박영배,최윤식 대한감염학회 2007 감염과 화학요법 Vol.39 No.1

Background : CD14 is the receptor for lipopolysaccharides and heat shock protein (HSP), which has been suggested being associated with increased risk of coronary artery disease (CAD). We investigated whether the response to infectious agents or HSP is different according to CD14 polymorphism in Koreans. Materials and Methods : Antibody titers to Helicobacter pylori, Chlamydia pneumoniae, and human HSP60 (hHSP60) were measured in 48 patients with stable CAD and in 41 healthy controls by ELISA. CD14 genotype was determined by PCR and high-sensitivity C-reactive protein (hs-CRP) was measured. Results : Seropositivity to C. pneumoniae and H. pylori, and antibody titer to hHSP60 were not significantly associated with the presence of CAD. CD14 genotype distribution was 31 TT (35%), 43 CT (48%), and 15 CC (17%). To compare the response to the infectious organism and hHSP60, we divided study population into 3 groups; CAD patients with non-TT genotype (group I, n=30), CAD patients with TT genotype (group II, n=18), and normal controls (group III, n=41). Seropositivity to C. pneumoniae and H. pylori, and antibody titer to hHSP60 were not significantly different among 3 groups. Though hs-CRP level was significantly different among 3 groups, post-Hoc analysis showed that hs-CRP level was not significantly different between group I and group II (group I: 1.6[1.1-3.5] mg/L and group II: 0.35[0.1-2.0] mg/L). Conclusions : This study suggests that the inflammatory responses to infectious organisms and HSP do not differ according to the CD14 genotype in Koreans. 목적 : 만성적인 세균 감염이나 자가 면역 반응이 동맥경화와 연관되어 있다는 주장이 제기되어 왔다. CD14은 lipopolysaccharides (LPS)와 heat shock protein(HSP)의 수용체로 C(-260)→T 다형성이 관상동맥 질환의 위험과 관련되어 있다고 제안되어 왔다. 본 연구에서는 한국인에서 CD14 다형성에 따른 LPS와 HSP에 대한 반응성을 염증표지자를 측정하여 살펴보고자 하였다. 재료 및 방법 : 안정형 관상동맥 환자 48명과 정상 대조군 41명을 대상으로 Chlamydia pneumoniae, Helicobacter pylori 항체 및 인체 HSP60 (hHSP60) 항체 역가를 enzyme-linked immunosorbent assay (ELISA) 방법으로 측정하였다. CD14 유전자형은 중합효소연쇄반응을 이용하여 결정하였고 hs-CRP를 측정하였다. 결과 : C. pneumonias 및 H. pylori 항체 양성 여부 및 항체 역가, 그리고 hHSP60에 대한 항체 역가는 안정형 관상동맥 질환의 유무와 유의한 상관관계는 없었다. CD14 유전자형의 분포는 TT 30명(39%), CT 31명(40%), 그리고 CC 16명(21%)이었다. 관상동맥 질환 군에서 TT 유전자형은 38%, 대조군에서는 32%로 TT 유전자형과 관상동맥 질환의 유무와는 유의한 상관관계가 발견되지 않았다(P>0.05). CD14 유전자형에 따라 C. pneumonias와 H.pylori 감염 및 hHSP60에 따른 반응에 차이가 있는지 여 부를 알아보기 위해, 관상동맥 질환 군을 다시 TT 유전자형 군과 non-TT 유전자형 군으로 나누어, 전체적으로 세군에서 항체 양성률과 역가를 비교하였다(I군: CD14 TT 유전자형을 가진 안정형 관상동맥 환자, II군: CD14 TT 유전자형을 가진 안정형 관상동맥 환자, III군: 정상 대조군). 세 군에서 C. pneumonias와 H. pylori 항체 양성률 및 hHSP60 항체 역가에는 유의한 차이가 없었다. 세 군사이에 hs-CRP 값에 유의한 차이가 있었지만, post-Hoc분석에서 II군의 hs-CRP 값이 I군에 비해 유의하게 높지는 않았다(0.35 [0.1-2.0] mg/L in group II vs. 1.6 [1.1-3.5]mg/L in group I, P>0.05). 결론 : 본 연구는 한국인에서 CD14 유전자형에 따라 LPS나 HSP에 대한 반응이 유의하게 다르지 않음을 시사한다.

왜소음경증과 남성 성기능에 관한 연구

송윤섭,김민의,이남규,박영호,전윤수,김응구 순천향의학연구소 1997 Journal of Soonchunhyang Medical Science Vol.3 No.2

Micropenis is defined as a normally formed penis with a size greater than 2 standard deviations below the mean. Twenty three patients with micropenis were managed at Soonchunhyang University Hospital from January 1988 to December 1995 We interviewed and examined them with micropenis to investigate the cause of micropenis, concomitant diseases, the efficacy of treatment and their sexual activity in postpubertal men. The patients were divided into 2 groups: 16 prepubertal and 7 postpubertal men. 9 patients had cryptorchidism, 3 of them were bilateral and 5 patients had hypospadias. Etiology was determined by hormonal assay including HCG stimulation test ; 8 as hypogonadotrophic hypogonadism, 4 as primary testicular dysfunction and 5 as idiopathic. However etiology was undetermined in 6 patients. All patients had endocrine therapy using HCG or depot testosterone. All except 4 cases responded satisfactorily. All postpubertal patients(group 2) were below the 10th percentile. Puberty was delayed in 3 patients in the older group. All patients were heterosexual and they have had erections and orgasms. Five patients have had ejaculations, 3 of them were sexually active and they have experienced vaginal penetration, Nevertheless, their sexual partners have had complaints and the patients themselves have felt ashamed and dissatisfied. Fortunately, they were mentally healthy. None of these patients were married or had a child.

Natural Variation in OsPRR37 Regulates Heading Date and Contributes to Rice Cultivation at a Wide Range of Latitudes

Soo-Cheul Yoo,Bon-Hyuk Koo,Choon-Tak Kwon,Nam-Chon Paek 한국육종학회 2014 한국육종학회 심포지엄 Vol.2014 No.07

Heading date and photoperiod sensitivity are fundamental traits that determine rice adaptation to a wide range of geographic environments. By quantitative trait locus (QTL) mapping and candidate gene analysis using wholegenome re-sequencing, we found that Oryza sativa Pseudo-Response Regulator37 (OsPRR37; hereafter PRR37) is responsible for the Early heading7-2 (EH7-2)/Heading date2 (Hd2) QTL which was identified from a cross of late-heading rice ‘Milyang23 (M23)’ and early-heading rice ‘H143’. H143 contains a missense mutation of an invariantly conserved amino acid in the CCT (CONSTANS, CO-like, and TOC1) domain of PRR37 protein. In the world rice collection, different types of nonfunctional PRR37 alleles were found in many European and Asian rice cultivars. Notably, the japonica varieties harboring nonfunctional alleles of both Ghd7/Hd4 and PRR37/Hd2 flower extremely early under natural long-day conditions, and are adapted to the northernmost regions of rice cultivation, up to 53° N latitude. Genetic analysis revealed that the effects of PRR37 and Ghd7 alleles on heading date are additive, and PRR37 down-regulates Hd3a expression to suppress flowering under long-day conditions. Our results demonstrate that natural variations in PRR37/Hd2 and Ghd7/Hd4 have contributed to the expansion of rice cultivation to temperate and cooler regions

은 나노 콜로이드를 이용한 돼지분뇨의 악취 저감 효과

김구필 ( Koo Pil Kim ),최영수 ( Young Soo Choi ),오광현 ( Kwang Hyun Oh ),구경본 ( Kyung Bon Koo ),서상룡 ( Sang Ryong Suh ),유수남 ( Soo Nam Yoo ),이경환 ( Kyeong Hwan Lee ) 한국농업기계학회 2011 바이오시스템공학 Vol.36 No.5

The effect of SNC(silver nano colloid) on the emission reduction of odors such as ammonia (NH3), hydrogen sulfide (H2S), and methane (CH4) from swine excreta was studied. Silver has been used as an universal antibiotic substance and can reduce the emission of some gases by sterilizing action. Therefore, an apparatus which produces SNC was developed and was conducted its performance test. Also, the SNC made by the apparatus was applied to swine excreta sampled from a piggery in oder to find the effect on the reduction of odor emission. An electrolysis apparatus was developed to produce SNC and its capacity was 0.024 ppm/hr·ℓ. The effects of SNC on the reduction of odor emission from swine excreta were tested for bad smell gases of ammonia (NH3), hydrogen sulfide (H2S) and methane (CH4). For ammonia gas, factorial experiments were conducted to find the effects of concentration and application rate of SNC. The test results for the different concentrations of 20 ppm, 50 ppm, and 100 ppm showed that the more concentration of SNC was increased, the more emission reduction of ammonia gas increased. From the test results about the effect of application rate, the more SNC was applied, the more emission reduction of NH3 increased. In order to reduce the concentration of NH3 below 5 ppm, SNC of 50 ppm is recommended to be applied at an interval of 6 hours, and is mixed with swine excreta in the volumetric ratio of 4:1. For hydrogen sulfide gas, the concentration was decreased as time went by and was reduced rapidly in the first stage of the tests for all applied concentrations of SNC (20 ppm, 50 ppm, and 100 ppm). Especially, when 100 ml of SNC with 100 ppm was applied, emission of hydrogen sulfide gas was reduced rapidly during early 4 hours after the application of SNC. And, concentration of hydrogen sulfide gas was maintained below 20 ppm after 12 hours. For methane gas, t-test showed that there was no significance on the effect of its application for all applied concentrations of SNC. Therefore, it was concluded that the application of SNC on swine excreta had no effect on the emission reduction of CH4.

줄넘기 운동이 과체중 남자중학생의 건강체력에 미치는 영향

구인권,최희남,김현수 한국학교체육학회 1999 한국학교 체육학회지 Vol.9 No.1

본 연구는 8주간의 줄넘기운동이 남자중학생 비만자의 건강관련 체력변인(근력, 근지구력, 유연성, 전신지구성, 신체구성)에 미치는 영향을 검토하기 위해 체지방율이 25%가 넘는 학생 20명을 운동집단(10명)과 통제집단(10명)으로 분류하여 매주 4회, 6-12분/1set, 그리고 분당 120회의 줄넘기 운동을 138박자 음악에 맞춰 1인용 구름판 위에서 4세트를 실시하였고, 세트당 휴식은 2분간 동적인 휴식을 실시하여 측정한 결과 운동집단에서 체중(1.5kg)과 신체 둘레의 가슴둘레(3.4mm)와 복부둘레(1.4mm), 그리고 체지방률(2.8%)이 모두 유의하게 감소하였다(p<.001), 근기능의 평가항목인 악력(2.6kg)과 아령들기(2.4회/30초)도 유의하게 증가하였으나 통제집단 역시 증가하여 양 그룹사이에서 유의한 차이를 발견하지 못하였다. 반면 하지 근지구력의 측정항목인 앉았다 일어나기는 운동그룹에서 유의한 증가를 보인 반면 (p<.001), 통제집단에서는 유의하지 않았다. 유연성을 평가한 앉아 윗몸 앞으로 구부리기는 운동집단이 9.1에서 10.3cm로 증가하였고(P<.05), 통제집단에서는 유의한 것은 아니나 오히려 약간 감소하였다. 이상과 같이 하지근지구력을 제외한 항목에서는 프로그램 후의 측정값에서 운동그룹과 통제그룹사이에서 유의한 차이를 보이지 않았다. 운동군에서 1600m 걷기로 추정한 최대산섭취량 역시 53.5에서 56.3 mℓ/kg/min으로 유의한 증가(p<.001)를 보였다. 그리고 운동에 참가한 모든 학생이 무릎이나 허리의 통증을 호소한 사람은 한 사람도 없었다. 이상과 같이 음악에 맞추어 실시한 구름판 줄넘기 운동프로그램이 비만 남자중학생의 신체 구성을 포함한 건강관련 체력의 향상과 정형외과적 상해방지에 유효하다는 것을 알았다. The purpose of this study was to investigate the effect of the 8 week rope skip exercise program on the health-related fitness for overweight boys (13.6±0.4 years). Twenty boys were randomized into two groups: nonexercising control (C, n=10) and ouexercise (Ex, n=10) groups, The Ex. group had rope skipping four times a week during the 8 weeks (120 skippings/min) with 138 beat music on the spring board After rope skipping program, the difference of the variation is verified by one-way ANOVA and paired t-test and the significance level is set up to .05. There were significant decrease in the percentage body fat and total fat mass in Ex group. And there was significant improvement in the cardiorespiratory fitness and muscular fitness following 8 week of training (p<.001). The results suggest that the rope skipping with music on the spring board is an effective exercise for overweight boys..

금수봉과 장태산 일대의 식생 군락에 따른 조류상

남동하,김정수,구태회 경희대학교 환경연구소 2001 環境硏究 論文集 Vol.10 No.-

This study is to investigate the diversity of the birds and avifauna in and around Mt. Kumsoo and Mt. Jangtae with focusing on forest type. Mt. Kumsoo consists mainly of natural forest, whereas man-made plantations were found in Mt. Jangtae. Bird diversity was evaluated according to the richness of species. Species richness was higher in Quercus mongolica, Q. variabilis, and Q. serrata-Q. variabilis communities than in Metasequoia glyptostroboides and Picea abies communities, and higher in Castanea crenata, P. koraiensis, Eucommia ulmoides, and P. densiflora communities than in Q. acutissima and Pinus densiflora communities. Nine species of bird discovered in communities of Q. mongolica, Q. variabilis, and Q. serrata-Q. variabilis were not found in M. glyptostroboides and P. abies communities; one species was found in M. glyptostroboides and P. abies communities but not in Q. mongolica, Q. variabilis, and Q. serrata-Q. variabilis communities, and fourteen species were present in all flora. Difference in habitat-use is important because the effect of reforestation on the avian diversity should not be examined only according to forest type, but also should examine the proportion of plantation in each area.