한강하구지역에서 월동하는 재두루미(Grus vipio)의 개체군 감소

이화수(Hwa-Su Lee),신주열(Ju-Yeol Shin),이시완(Si-Wan Lee),강태한(Tae-Han Kang),윤순영(Soon-Young Yoon),김정수(Jungsoo Kim) 한국조류학회II 2012 한국조류학회지 Vol.19 No.4

김포시와 고양시 일대의 한강하구 지역은 우리나라에서 재두루미의 가장 중요한 월동지 및 중간기착지로 알려져 있지만, 이 지역의 조류 서식환경은 심각한 개발압력과 인간의 간섭으로 인해 지속적으로 나빠지고 있다. 따라서 본 연구에서는 2007-2008년과 2011-2012년의 월동시기에 본 지역에 도래하는 재두루미를 대상으로 월동 개체군 크기 변화와 월동지역 내에서 과거와 현재의 취식지역 이용 현황 등을 조사하여 개발행위가 이들의 서식에 미치는 영향을 확인하였다. 본 지역에서 월동하는 재두루미 개체군은 평균 124.9개체(2007-2008년)에서 59.0개체(2011-2012년)로 감소하였으며, 주요 취식지역에서 확인된 개체수는 평균 77.7개체에서 24.1개체로 감소하여 월동개체군의 감소폭에 비해 주요 취식지역의 이용 개체수의 감소폭이 더 크게 나타났다. 유형별 분석에서는 가족군에 비해 무리군의 개체수가 많이 감소한 것으로 나타났으나, 홍도평 지역의 가족군 이용 개체수는 변화가 나타나지 않았다(Mann-Whitney test. Z=-0.26, p=0.979). 그리고 과거 다수의 재두루미가 주요 취식지역으로 이용하였던 송포동과 평동지역은 2012-2013년 조사에서는 거의 이용하지 않는 것으로 나타났다. 이는 위 지역의 개발행위(예: 제 2자유로 건설 등)와 깊은 연관성이 있는 것으로 생각된다. Han-river estuary in Gimpo and Goyang city is well known as one of the most important wintering and stopover sites for migrating White-naped Crane (Grus vipio) in Korea. Nowadays, habitat quality of this area is getting worse due to serious development pressure and high human disturbances. So, we wanted to know whether development actions affected total wintering population change in Han-river estuary and feeding group pattern of White-naped Crane in main feeding habitats between the 2007-2008 and 2011-2012 wintering period. Average wintering population was decreased 124.9 to 59.0 and population of main feeding site also decreased 77.7 to 24.1. But decrease rate of main feeding site population was higher than total wintering population. Non-family feeding population was more decrease than family feeding population in the flock type analysis. But family feeding population of Hongdopyong was maintained from past and present (Mann-Whitney test. Z=-0.26, p=0.979). However, almost all White-naped Crane din not use both feeding sites, Pyong-dong and Songpo-dong, where were deteriorated habitat quality by human act.

광주광역시 영산강 일대의 조류상과 분포특성

강태한,이두표 호남대학교산업기술연구소 2011 산업기술연구논문집 Vol.17 No.-

본 연구는 광주광역시 도시구간을 흐르는 영산강 일대의 조류상과 분포특성을 파악하고자, 조사지역 6개소를 선정하여 2001년 12월부터 2002년 11월 사이에 계절별로 1회씩 조류센서스를 실시하고 서식환경을 조사하였다. 총 78종 12,170개체가 관찰되었으며 겨울철에 58종 5,979개체로 가장 많은 종과 개체수 관찰되었다. 우점종은 쇠오리, 붉은머리오목눈이, 흰빰검둥오리, 참새, 멧비둘기, 찌르레기 등으로 나타났다. 전체 종다양도는 3.03으로 나타났으며, 계절별로는 봄철이 2.74로 가장 높았다. 종 조성 분석결과, 수면성 오리류가 38.1%, 산림조류가 35.4%, 백로류가 12.5%, 섭금류가 2.35%, 맹금류가0.25%, 잠수성 오리류가 0.06%를 차지하였다. 본 연구결과 조류상은 전반적으로 하천수계의 특징을 보여주지만, 조류의 분포는 서식지 구성요소 중 교목과 관목의 비율이 높은 지역의 경우 산림성 조류가 우점하는 분포특성을 보였다. 이러한 결과는 산림조류의 보호 및 다양성 증진 측면에서 둔치의 식생보존이 매우 중요하다는 사실을 암시한다. This study was carried out to understand the characteristics of distribution and avifauna in an urban area of Yeongsan river. Bird censuses were conducted seasonally at six sites of the river in Gwangju metropolitan city between Dec. 2001 and Nov. 2002. And habitat composition was investigated simultaneously. A total of 78 species and 12,170 individuals was recorded. Of the four seasons, winter showed the highest count with 5,979 individuals of 58 species. The most dominant species was Anas crecca(18.1%), followed by Paradoxornis webbiana(10.8%), Anas poecilorh-yncha(10.6%), Passer montanus(7.0%), Streptopelia orientalis(6.9%) and Sturnus cineraceus(5.0%). Species diversity index was 3.03 in total of four seasons, and was the highest in spring at 2.74 seasonally. In the species composition, dabbling ducks occupied 38.1%, forest birds 35.4%, herons 12.5%, shorebirds 2.35%, raptors 0.25% and diving ducks 0.06%. Overall, the avifauna of this study area showed the characteristics of river ecosystem. Nevertheless the distribution of birds in relation to habitat composition showed the terrestrial bird group is more plentiful than water bird group in the area with a high proportion of wood and shrub. This result suggests that the preservation of waterside vegetation is very important in aspect of the promotion of bird diversity and the protection of forest birds.

오존공정을 이용한 염색폐수의 처리특성에 관한 연구

강용태,원태준,한상윤,고영발,박경덕 東亞大學校 建設技術硏究所 2008 硏究論文集 Vol.32 No.1

The wastewater from textile industry typically containing high alkalify, salts, organic matter, and high color. Textile wastewater is usually treated by anaerobic-aerobic activated-sludge process. The activated-sludge process is effective the reduction of organic matter, but generally does not remove color. Ozone process is one of the most effective process in removal of color for the textile wastewater. Ozone has a strong oxidized dissolution of organism, deceleration, deodorization, fumigation, etc., regarding to water. This study focused on the color removal of textile wastewater. In this study, textile wastewater was treated strongly with ozone at 650mg/hr and the flow rate through ozone contact tank was adjusted to 5L/min. In an application Ozone treatment, Color was generally decreased with time, however, COD removal effect was not that good. In this study, the removal efficiencies of CODcr and Color were 23.5%, 80.4% respectively.

한국 재래 산양에서 Leptospira spp.에 대한 혈청역학적 연구

한동운,권용국,문진산,윤소라,위성환,장환,탁동섭,이태욱,강문일 한국수의공중보건학회 2003 예방수의학회지 Vol.27 No.3

Between January 1999 and September 2001, 948 sera (120 from each province except 108 from Chungbuk) from 8 provinces were sampled from Korean goats. All the samples were serologically tested for Leptospira spp. By the microscopic agglutination test against four L. interrogans serovars including canicola, icterohaemorrhagiae, pomona and hardjo, 948 Korean goats were confirmed as 11 seropositives (1.2%) only infected with L. icterohemorrhagiae. All positive sera were collected from Gyeonggi (5), Gangwon (4) and Chungbuk (2). Titration of them were classified as 1:100 of 10 sera except one case with 1:200 from Gyeonggi. It was meaningful that the pathogen in Korean goats was mainly distributed in the northen part of the country. Consequently, the results in the study were confirmed and analyzed the recent status of infection of leptospirosisas zoonotic agentsome in Korean goats.

고체발효기를 이용한 농산폐기물의 퇴비화에 따른 물리화학적 및 미생물상 변화

강태수,안문섭,한동준,이해승 도립 강원전문대학 1999 道立 江原專門大學 論文集 Vol.2 No.-

This study was performed to evaluate the composting process of agricultural wastes using the solid state fermentor at the general optimum composting conditions. The changes of physico-chemical and microbiological flora in the reactant during the composting time were investigated. The results were summarized as follows : From the results of proximate composition analysis of fermentation enzyme, the content of moisture, crude ash and total carbohydrate were 2.29, 67.57 and 22.69%, respectively. The number of thermophilic bacteria and actinomycetes in the enzyme were 2.6×10^(4) and 4.1×10^(5) respectively. During the composting time, the content of moisture in all wastes was decreased but acorn waste was not changed. The generation of maximum CO_(2) was in the range of 1,500∼10,000ppm after 12∼36hrs of composting time and then was gradually fallen. The C/N ratios of the Injin murgwort, arrow root and mushroom media waste were increased, but acorn waste was decreased. The contents of inorganic components(P_(2)O_(5), K_(2)O, CaO, and MgO) in the Injin murgwort, arrow root and mushroom media waste were a little decreased, but acorn and hole wastes were increased. The changes of thermophilic bacteria, in the Iniin-murgwort and arrow root waste showed big diversity while acorn and hof waste were slowly decreased. However the population number of thermophilic actinomycetes in the acorn waste was increased until for 24 hrs and then gradually decreased. The population number of thermophilic bacteria and actinomycetes showed not much difference.

한라산 1100고지에서 채취한 대기 에어로졸 조성의 계절적 변화에 관한 연구

강창희,한지숙,김태행,김원형,박용이 濟州大學校 基礎科學硏究所 1997 基礎科學硏究 Vol.10 No.1

The atmospheric aerosols have been collected with aerosol sampler installed at 1100m site located at Halla mountain in Cheju island for about 124 days from August 15, 1996 to May 3, 1997, and their compositions have been analyzed in order to investigate the seasonal variation of aerosol compositions and the characteristics of aerosols. The correlation coefficients for the sum of the cation and anion equivalent concentrations showed the values between r=0.911 and r=0.977, and it has been found that the precision of the analytical data was with good satisfaction. The amounts of total suspended particulates(TSP) were in the range of 19.9∼28.6μg/㎥ with the highest concentrations in Spring season due to the yellow sand effect. The average concentrations of water-soluble cations were in the order of NH₄ +>Na+>Mg²+>K+>Ca²+ during the summer, fall and winter seasons, but NH₄+>Ca ²+>K+>Na+>Mg²+ during the spring season. The average concentrations of anions were in the order of SO₄->NO₃->Cl- for the all seasons. The concentrations of SO₄²- and NO₃- showed a high increase through winter and spring seasons due to the effect of the north-west wind, which were 5.95∼6.05μg/㎥ and 1.41∼1.60μg/㎥ respectively. And the Ca²+, the major component of soil, showed a high concentration value of 0.47μg/㎥ in yellow-sand spring season. In the effect of sea-salt with the enrichment factors, the SO₄²-, Ca²- and K+ were found to be flown to the air due to the other factors rather than sea-salt effect. And in the effect of soil with the enrichment factors, the SO₄²-, NO₃-, Cl- and NH₄+ were found to be introduced to the air through the other paths but the soil itself.

한국 재래산양에서 Bovine Viral Diarrhea, Bovine Herpesvirus-1, Parainfluenza Type-3 바이러스에 대한 혈청학적 연구

한동운,권용국,문진산,윤소라,위성환,장환,탁동섭,이태욱,강문일 한국수의공중보건학회 2003 예방수의학회지 Vol.27 No.3

The 948 goat sera were serologically tested for ten pathogens including bovine viral diarrhea (BVD), bovine herpes virus type-1 (BHV-1) and parainfluenza virus type-3 (PI-3). By viral neutralizaion test, three pathogens including BVD virus, BHV-1, PI-3 were applied for screening each neutralizing antibody and its titration. Among 948 sera, there were 215 seropositives (22.7%) against BVD virus, 25 (2.6%) against BHV-1 virus, and 161 (17.0%) against PI-3 virus, respectively. In the seropositive cases to BVD virus, provincial prevalence of them were recorded as Gyeongnam(30.8%) for the highest one, while as Jeonbuk (15.8%) and Gyeongbuk(l6.7%) relatively for the lower ones. Among them, higher than 1:8 in antibody titration was classified as 74 cases (34.4%) which were suspected the cycle of its infection in their herds. Among the seropositives to BHV-1, it was relatively lower prevalence rate ranging from 1.7% to 6.7% that those of BVD virus and PI-3, but more importantly they were prevailing across the country. Most of the seropositive cases (42.9%) to PI-3 were classified as 1:4-1:16 in titration, but also distributed all around the country. The prevalence in goats varied according to areas (15.8 to 30.8%). Related to the provincial prevalence of three viral agents in Korean goats, it seemed that three viral pathogens would be directly or indirectly involving in various disorders as primary or secondary causative agents resulting in decreased productivity.

공작 기계의 신뢰성 평가를 위한 웹 기반 해석 프로그램 개발

강태한,김봉석,이수훈,송준엽,강재훈 한국공작기계학회 2004 한국공작기계학회 추계학술대회논문집 Vol.2004 No.-

Web-based analysis programs for reliability assessment of machine tools were developed in this study. First, the reliability data analysis program was developed to search for failure rate using failure data and reliability test data of mechanical part. Second, failure mode analysis was developed through performance tests like circular movement test vibration test for machine tools. This analysis program shows correlation between failure mode and performance test result. Third, tool life was predicted by correlation between flank wear and cutting time, using the extended Taylor tool life equation in turning data and the equivalently converted equation in order to apply ball endmill data to Taylor tool life equation in milling data. All the information related to input and result data can be stored in theses programs.

공원묘지 유실에 의한 대량재해의 개인식별

강신몽,이한영,윤중진,이원태,김종열,이영석,서재관,최득린,서지석,이혜경 大韓法醫學會 1992 대한법의학회지 Vol.16 No.1

Individual identification of severely decomposed or skeletonized bodies is an important part in medicolegal field. 142 bodies were torn up and carried away by flood in a park cemetry, Kwang-Ju, Kyunggi province, Korea at Sept., 10, 1990. The authors examed the 56 bodies, which were gained, through medical, anthropological, odontological, radiological methods, and superimposition for individual identification. Among them, 41 cases were successfully identified, and remaining 15 cases were not identified because of sever destruction and no adequate information.

土地登錄 公示制度의 改善方案

姜泰奭,韓東一 청주대학교 사회과학연구소 1994 한국사회과학연구 Vol.13 No.-

The cadastral and land registration systems in Korea could be evaluated as those irrational and inefficient. This is mainly because they tend to follow those of Japanese system, and some have been revised, at best, in part. Particulary, systems involved divide same parcel of land into cadastre and land register by means of public notification. The existing way bodies of Korean Government (the executive and the judicature) administered has been overlapped by providing identical official services involved such as cadastres and land registers, while voiding administrative consistencies. Government needs to unite the existing cadastral and land registration systems as a way to achieve inefficent land management. Some five steps for the unification of cadastral and land registration system can be suggested as follows : ①a provision of unification of land records. ②a provision of excutive function and achievement of cadastral and land registration service at one time. ③a collaboration of office that could serve cadastral and registration services as well. ④a unification of land records and organizations. ⑤a preperation of land information systems by computerizing the united registers. Most desirable goal would be to provide an one-demensional system enough to combine cadastre with land registration administration. And also, it is suggested that various echelons of government body(such as Ministry of Home Affairs, Office of Province, City Government, County and Ku) should be united into a specialized function in point, which guarantee its identical inconsistencies.