북동 태평양 심해저퇴적물에 서식하는 중형저서생물의 군집조성

김동성,Kim, Dong-Sung 한국해양학회 1997 바다 Vol.2 No.1

북동 태평양 심해저 퇴적물에 서식하는 중형저서생물의 군집조성 및 분포양상을 보기 위하여, 다중 주상 시료 채취기(Multiple corer) 및 상자형 시료 채취기(Box corer)를 사용하여 10개 정점에서 시료를 채집하였다. 전 정점에서 18개 분류군이 출현하였다. 각 군집의 비율을 보면 Sarcomastigophora가 가장 우점하여 35.8%, 그 다음 Nematoda가 30.8%, Crustacea의 Naup1ius larvae가 그 다음으로 11.9%의 조성비율을 보였다. 또, benthic Harpacticoida, Ciliophora가 주요 생물군으로 이 5개의 주요 동물군이 전 정점의 중형저서동물 전체의 약 90%를 차지하였다. 총 개체 수는 정점 4(수섬 4960 m)에서 가장 높은 196 inds./10 $cm^2$을 보였고 정점 1(수심 4969 m)에서 가장 낮은 85 inds./10 $cm^2$을 보였다. 각 정점의 평균 개체 수는 $1.34{\times}10^5\;inds./m^2$ 이였다. 수평분포는 수심의 증가에 따라 서서히 감소하는 경향을 보였고, 수직분포는 표층 0~1 cm에서 집중적으로 분포하고 퇴적물내의 심도의 증가에 따라 서서히 감소하는 경향을 보였다. This study was carried out to investigate the faunal composition and distribution pattern of meiobenthic community in the deep sea sediments of northeastern Pacific Ocean. Faunal samples were collected at 10 stations using a multiple corer and a spade type box corer during May 1996. A total of 18 meiofaunal groups were found, and Sarcomastigophora was the most dominant group which accounted for 35.8% of total meiofaunal abundance. Nematoda (30.8%), Nauplius larvae of Crustacea (11.9%), Ciliophora (6.8%) and Harpacticoida (3.0%) which were also important components of the meiofaunal community. All of these five faunal groups comprised more than 90% of total meiofauna. The highest density of 195 ind./10 $cm^2$ was found at St. 4 (4960 m water depth), but the lowest one, 85 ind./10 $cm^2$ at St. 1 (4969 m water depth). The overall mean density of meiofauna was estimated as $1.34{\times}10^5\;ind./m^2$. The abundance of meiofauna showed a slow decreasing trend along the water depth. The highest density was observed in the upper 1 cm and density decreased drastically with increasing depth from the surface.

스프링클러 배관의 부식 특성과 대책에 관한 연구

김동성,조원철,김병선,이태식,Kim. Dong-Sung,Cho. Won-Cheol,Kim. Byung-Seon,Lee. Tae-Shik 한국방재학회 2008 한국방재학회 학술발표대회논문집 Vol.2008 No.1

This study is for the corrosion property of sprinkler pipe and the prevention solution. The main causes of corrosion are the deterioration of pipe and wrong installation of pipe. This study includes the property of stainless pipe that is widely used as sprinkler pipe and other kinds of pipe, the theory of corrosion procedure and the result of test that is performed to ascertain the advance degree of corrosion about `A` factory complex using pipe samples that were collected at designated point of each factory complex.

컴퓨터 시뮬레이션을 통한 충격흡수시설의 개발

김동성,김기동,고만기,Kim,Dong-Sung,Kim,Kee-Dong,Ko,Man-Gi 한국방재학회 2008 한국방재학회 학술발표대회논문집 Vol.2008 No.1

The development of crash cushions is finally completed by full-scale vehicle crash tests. Since the current development of crash cushions is achieved by numerous repeated full-scale vehicle crash tests based on empirical and irrational methods, it requires a great amount of costs. In this research, the more rational procedure based on prototype design by static tests and computer simulation is suggested and it can minimize the number of full-scale vehicle crash tests.

패널 존의 비탄성거동과 설계강도

김동성,김기동,고만기,Kim. Dong-Sung,Kim. Kee-Dong,Ko. Man-Gi 한국방재학회 2008 한국방재학회 학술발표대회논문집 Vol.2008 No.1

The design strength of panel zones, which was based on Krawinkler model, was investigated by comparing it with existing test and FEM results. The design strength overestimates of the strength of panel zones with thick column flange while it matches well with the strength of panel zones with thin column flange. More extensive studies are needed to develop a mathematical model which can properly define the inelastic behavior of panel zones with various column flange thicknesses and to determine a more rational design strength.

탐방취재-명공농장

김동성,Kim, Dong-Sung 대한양돈협회 1986 養豚 Vol.8 No.2

마이크로 채널 충전 과정의 유동 현상(I) - 유동 가시화 실험 -

김동성,이광철,권태헌,이승섭,Kim, Dong-Sung,Lee, Kwang-Cheol,Kwon, Tai-Hun,Lee, Seung-S. 대한기계학회 2002 大韓機械學會論文集A Vol.26 No.10

Micro-injection molding and microfluidic devices with the help of MEMS technologies including the LIGA process are expected to play important roles in micro-system industries, in particular the bio-application industry, in the near future. Understanding fluid flows in micro-channels is important since micro-channels are typical geometry in various microfluidic devices and mold inserts for micro-injection molding. In the present study, Part 1, an experimental investigation has been carried out to understand the detailed flow phenomena in micro-channel filling process. Three sets of micro-channels of different thickness (40um,30um and 2011m) were fabricated using SU-8 on silicon wafer substrate. And a flow visualization system was developed to observe the filling flow into the micro-channels. Experimental flow observations are extensively made to find the effects of pressure, inertia force, viscous force and surface tension. A dimensional analysis for experimental results was carried out and several relationships A dimensionless parameters are obtained.

함정 전투 시스템의 분산 제어 통신망 기술

김동성,허성길,Kim, Dong-Seong,Huh, Sung-Kil 한국정보통신학회 2012 한국정보통신학회지 Vol.13 No.2

우기종저(牛氣腫疽)에 대한 예방약(豫防藥)과 항혈청(抗血淸)의 검정(檢定)을 위한 연구(硏究)

김동성,Kim, Dong Sung 대한수의학회 1968 大韓獸醫學會誌 Vol.8 No.2

Throughout the studies the following experimental results were summarized. 1. It was impossible to infect and kill the mice, weighing 10 to 12 gm, by inoculating 0.2ml of virulent Cl. chauvoei, diluted 1 to 10 with physiological saline, via subcutaneous, intramuscular, intraperitoneal or intraveonus, route. 2. The mice which were inoculated in brain with 0.03ml of Cl. chauvoei diluted 1 : 5120 with physiological saline were resulted in all death after infection, but not in case of attenuated strain even in dilution of one to five. 3. Virulent Cl. chauvoei were diluted with each of those of whole blood, erythrocytes and serum of horse, calf, swine, sheep, rabbit, guinea pig, chicken and duck, human plasma and 2% CaCl solution, and inoculated subcutaneously 0.25 to 0.5ml in mice, weighing 12 to 15gm. It was resulted in significant increase in virulence as comparing with the case of physiological saline solution except when horse and pig sera were used. Such a phenomena were not seen in attenuated strain. 4. Virulence of virulent Cl. Chauvoei could be increased significantly in rat, as the procedures used in mice, by suspending in whole blood, erythrocytes, serum, or plasma of various animals, or 2% $CaCl_2$ solution and by inoculating subcutaneously 0.5 to 10ml in rat, weighing 30 to 60 gm, as compared with those of control group which used physiological saline solutionos diluent. 5. Mice resisted 100 and 80 percent against challenge of $10^3$ and $10^4$ M.L.D.. respectively, 24 hours after inoculation of 0.5ml black leg antiserum. 6. Immune response to the black leg living vaccine in mice could be obtained more favorably in the group of respected vaccination rather than those of single inoculation and the most profitable inoculm size of the vacine was 0.5 to 1.0ml. 7. Challenge for the immunized mice could be carried out effectively 3 weeks after first vaccination. 8. Satisfactory results could be obtained by inoculating subcutaneously for the immunization and intracerebrally or subcutaneously for the challenge. 9. Mice which were inoculated with 0.5ml of black leg living vaccine via subtaneucously two times at seven days interval and 21 days after first inoculation and challenged with 5 and 10 M.L.D. of virulent strain, resited 100 and 70 to 80 percent respectively. Same results were obtainable in black leg killed vaccine as the procedures used in living vaccine. 10. There were significantly different resistances against the definite challenge does between the mice groups which were immnuized with the living vaccine diluted five or 10 times and the undiluted. 11. For the biological assay of black leg living vaccine and antiserum, satisfactory results could be obtained using mice.

Black leg Living vaccine 과 Formalin vaccine 과의 비교(比較) 시험(試驗) -주(主)로 면역력(免疫力)과 면역지적기간(免疫持績期間)에 대(對)하여-

김동성,차연호,박정문,Kim, Dong Sung,Cha, Youn Ho,Pack, Jung Moon 대한수의학회 1964 大韓獸醫學會誌 Vol.4 No.1

A comparative experiment on the duration of immunity and antigenicity of the Black-leg vaccine was conducted and following results were obtained. Animals vaccinated with formalin and modified living vaccine were equally survived when they were challenged 12 months after the vaccination. It was further found that the rate of survival was 50 % on both groups when the animals were challenged 16 months after the vaccination, and no distinctive difference was observed between the two groups by means of protection power.

기종저(氣腫疽)에 대(對)한 몇가지 항생물질(抗生物質) 치료시험(治療試驗)

김동성,차연호,Kim, Dong Sung,Cha, Youn Ho 대한수의학회 1964 大韓獸醫學會誌 Vol.4 No.1

In the treatment of mice Aureomycin, Oil penicillin, Achromycin, Ambrasynth and Terramycin were effective on the Black-leg disease when they were administered about 4 to 5 hours before the death of control animals. Synthomycetin, however, was observed to be effective when administered 8 hours or more before the control death. Streptomycin seemed to be rather less effective than Black leg antiserum. It was not effective at all when given 19 hours before the death of control animal although there was a delay of taking death by 5 hours in the treated group. As was in mice, Streptomycin was little effective in the treatment of calves, while other antibiotics showed fine efficacy on the diseased animals. The diseased animals, when given with anitibiotics 37 hours before the death of control showed the rise of temperature($41^{\circ}C$ or more), swelling and redness on the site of infection and then recovcred to normal stage. In the treatment of calves, Aureomycin only delayed the taking death of the deseased animals by 111 hours when administered 4 hours before the death of control animals. And other antibiotics, when given 4 hours before the death of control animals were effective, although the deseased animls developed symptoms such as hard breathing, anorexia and dropsical swellings. Oil penicillin was observed to be comparatively larger in its efficacy on the treatment of Black leg disease.