유기용제 취급근로자들의 요중대사물질과 말초임파구 자매염색분체교환 발현빈도에 관한 조사연구

김돈균,황인경,류철인,이수일,정갑열,이용환,이충렬,현원일,김석봉,전용덕 大韓産業醫學會 1990 대한직업환경의학회지 Vol.2 No.1

저자들은 유기용제 취급여성근로자 90명을 대상으로 1988년 7월부터 1989년 8월까지 말초혈액임파구에서의 자매염색분체교환의 발현빈도를 조사하고 이들의 업종, 근속연수, 요중마뇨산 농도등이 자매염색분체교환의 발현빈도에 미치는 영향을 조사하였으며 그 결과를 요약하면 다음과 같다. 1. 유기용제 취급근로자들의 말초혈액임파구에서의 자매염색분체교환의 발현빈도는 대조군에 비하여 유의하게 증가되었다. 2. 말초혈액임파구에서의 자매염색분체교환의 발현빈도가 가장 높은 업종은 프라스틱제품 제조업이었다. 3. 근속연수가 말초혈액임파구에서의 자매염색분체교환의 발현빈도에 미치는 영향은 현저하지 않았다. 4. 요중마뇨산농도와 말초혈액임파구에서의 자매염색분체교환의 발현빈도간에는 유의한 상관관계가 있었다. In order to know the possibility of utilizing the sister chromatid exchanges as an index which could evaluate the effect of organic solvents on the health in industrial workers, the authors studied the effects of the inductivity of sister chromatid exchanges in peripheral lymphocytes from 90 female workers expoxed to organic solvents and 20 non-exposed female workers. The results obtained were as follows : 1. The frequency of sister chromatid exchanges in peripheral lymphocytes from 90 female workers exposed to organic solvents was significantly increased in comparison with 20 control subject. 2. The frequency of sister chromatid exchanges was significantly increased in the workers who were employed in the manufacture of plastic materials than the other manufactures. 3. There were no significant differences in the frequency of sister chromatid exchanges by carriers of the exposed workers.

비타릿히氏法에 對하여

金甲德 서울대학교 1963 서울대학교 論文集 Vol.13 No.-

1. Number of sample plots was 373 and they were distributed on the natural pine stands. 2. The basal area of stands per hectare was estimated by Grossenbaugh's relascope which was made by the author. The results of the above investigation was almost under estimation on the sloped area. 3. The results of the investigation of estimated value were significant at 1 percent level except the case of 0 to 10 degrees in the slope. 4. When eleven degrees were exceed in their slopes, it was found that the result became none significant at 50 percent level through multiplying the estimated value by correction value as follow. (table 1). ◁ 표 삽입 ▷ (원문을 참조하세요) 5. Regression line Y=X is obtained by multiplying correction value by the estimated values regardless of the slope class. 6. When Kim's-relascope which was deviced by the author was used, there is none significant regardless of slope. Accordingly it was found that the basal area of stands can be estimated by using the relascope without correction values. In this case each experimental formula is satisfied by X=Y. 7. There were, however somewhat significant error in measurement among individuals. Therefore some adquate training and practice would be required for accuracy in estimating the basal area with the Grossenbaugh's relascope.

野生鳥獸의 分布와 捿息密度 및 食性에 關한 硏究 -第2報-

金甲德,禹漢貞,金泰旭 서울大學校 農科大學 1980 서울대농학연구지 Vol.5 No.1

1. Birds and Mammals census by line transect (Roadside census) and food plants for birds (plants birds like the most) was made at Mt. Baek Woon, No.4 No.5 No.6 and at Mt. Chi Ak, during 18 April 1978 to 11 February 1979. 2. The number per hour and percent dominance (for the total of all species) were calculated as indices for relative abundance of each species, (Table: 4,5,6,7). 3. Distance (per Km), width (per ha.), time (per hour) and relative abundance for each species in four census areas were observed. 4. 49 species of bird recorded, Great Tit, Parus major, Brandt's Jay, Garrulus glandarius, Crow Tit, Paradoxornis webbiana, Meadow Bunting, Emberiza cioides(resident) and Naumann's Thrush, Turdus naumanni, Brambling, Fringilla montifringilla, Rustic Bunting, Emberiza rustica(winter bird) were recorded as dominant species Mt.Baek Woon. Great Tit, Parus major, Blue Magpie, Cyanopica cyane, and Crow Tit, Paradoxornis webbiana were recorded as dominant species at Mt. ChiAK. 5. Blue Magpie, Cyanopica cyane is breeding at Mt. ChiAK but at Mt. Baek Woon it was not yet observed. 6. Korean Magpie, Pica pica is no distributed four census areas. 7. Mammalian fauna in four census area is relatively low and Korean Red Fox, Vulpes vulpes Chinese Wolf, Canis lupus and Siberian Leopard, Panthera pardus had exterminated since Korean War Table: 3) 8. A few number of Korean Flying Squirrel, Petaurista leucogenys hintoni is breeding at Mt. ChiAK.

GaAs on Si substrate with dislocation filter layers for wafer-scale integration

Kim, HoSung,Kim, Tae-Soo,An, Shinmo,Kim, Duk-Jun,Kim, Kap Joong,Ko, Young-Ho,Ahn, Joon Tae,Han, Won Seok Electronics and Telecommunications Research Instit 2021 ETRI Journal Vol.43 No.5

GaAs on Si grown via metalorganic chemical vapor deposition is demonstrated using various Si substrate thicknesses and three types of dislocation filter layers (DFLs). The bowing was used to measure wafer-scale characteristics. The surface morphology and electron channeling contrast imaging (ECCI) were used to analyze the material quality of GaAs films. Only 3-㎛ bowing was observed using the 725-㎛-thick Si substrate. The bowing shows similar levels among the samples with DFLs, indicating that the Si substrate thickness mostly determines the bowing. According to the surface morphology and ECCI results, the compressive strained indium gallium arsenide/GaAs DFLs show an atomically flat surface with a root mean square value of 1.288 nm and minimum threading dislocation density (TDD) value of 2.4×10⁷ cm^-2. For lattice-matched DFLs, the indium gallium phosphide/GaAs DFLs are more effective in reducing the TDD than aluminum gallium arsenide/GaAs DFLs. Finally, we found that the strained DFLs can block propagate TDD effectively. The strained DFLs on the 725-㎛-thick Si substrate can be used for the large-scale integration of GaAs on Si with less bowing and low TDD.

초기 당뇨병성 신증과 동반된 Erythropoietin 결핍성 빈혈에 대한 합성 조혈호르몬의 치료효과

김대중,김수경,김형진,김유미,윤용석,안철우,차봉수,송영득,임승길,김경래,이현철,허갑범 대한당뇨병학회 2002 Diabetes and Metabolism Journal Vol.25 No.5

연구배경:본 연구자 등은 과거에 진행성 당뇨병성 신증 이전 단계에서 원인미상의 빈혈을 동반한 환자들을 관찰할 수 있었으며, 빈형에 대한 Epo의 반응성 감소, 즉 Epo의 상대적 결핍이 빈혈의 원인이 될 수 있음을 보고한 방 있다. 이에 본 연구의 목적은 초기 당뇨병성 신증과 동반된 Epo 결핍성 빈혈에서 rHuEpo의 치료효과를 보고자 하였다. 방법:총 29명의 Epo 결핍성 빈혈을 가진 당뇨병 환자를 Epo 투여군(남:여=8:12, 평균나이 52.9±12.4세)로 무작위 배정하였다. Epo 투여군에게는 rHuEpo(Epokine,㈜제일제당)을 하루 4,000단위씩 주 3회 피하주사하였고 최대 8주간 사용하였다. 추적기간 동안 혈색소치가 2g/dL 이상 상승하거나 혈색소치가 남자 14g/dL, 여자 13g/dL 이상으로 상승한 경우를 반응군으로 하였고 나머지를 비반응군으로 하였다. 결과: Epo 투여군과 대조군 사이의 임상적 및 생화학적 특성의 차이는 없었다. 반응군(n=14)은 비반응군과 대조군에 비해 치료 8주째 의미있는 혈색소치의 상승을 보였다(각각 13.6±1.0, 10.1±1.5, 11.2±1.2g/dL, p<0.01). 반응군의 rHuEpo의 평균투여기간은 4.9±2.3주였다. Epo 투여군중 반응군과 비반응군 사이의 성별, 연령, 당뇨병의 유병기간, 혈청 크레아티닌치, 24시간 소변내 알부민농도, 당뇨병성 미세혈관합병증의 유무, 그리고 혈청 Epo 농도의 차이는 관찰되지 않았다. 그러나 반응군은 비반응군에 비해 혈청 ferritin(각각 240.3±108.4, 25.8±3.0㎍/L, p<0.05)과 transferrin saturation(각각 32.7±7.9, 21.2±5.3%, p<0.05)이 의미있게 높은 소견을 보였다. 결론:이상의 결과로 초기 당뇨병성 신증과 동반된 Epo 결핍성 빈혈에서 rHuEpo의 투여를 통해 빈혈을 교정할 수 있었으며, rHuEpo에 대한 반응의 정도는 당뇨병과 관련된 임상적 특성보다는 기능성 철결핍 정도와 관련되어 있다고 생각된다. Background : We have previously reported that reduced erythropoietin (Epo) responsiveness to anemia could explain the anemia in diabetic patients before advanced diabetic nephropathy. Thus, the aim of this randomized prospective study is to investigate the therapeutic effect of recombinant human erythropoietin (rHuEpo) on anemia with Epo deficiency in early diabetic nephropathy. Methods : Twenty-nine diabetic patients with the normocytic normochromic anemia of Epo deficiency were randomized into Epo-treatment group (n=20, M:F=8:12, mean age=52.9±9.2) and control group (n=9, M:F=4:5, mean age=53.6±12.4). Twenty patients of Epo-treatment group were treated with rHuEpo (Epokine® (CheiUedang Co.) 4,000 unit/ day SC., 3 times/ week) for 8 weeks. The Epotreatment group were divided into the responder or non-responder. Patients with increments in Hemoglobin (Hb) during the follow-up duration was above 2g/ dL, or with the final Hb was above 14g/ dL in men or 13g/ dL in women were decided the responder. In order to analyze factors affecting the therapeutic effects of rHuEpo, the clinical and biochemical characteristics were compared between the responder and non-responder group. Results : There was no difference in the clinical and biochemical characteristics between the Epo-treatment and the control group at randomization. The responder group (n=14) had significant increments in Hb, compared to the non-responder group (n=6) or the control group (13.6±1.0 vs. 10.1±1.5 vs 11.2±1.2g/ dL, p<0.001, respectively). The treatment duration of rHuEpo in the responder group was 4.9±2.3 weeks. Among the Epo-treatment group, there was no differences between the responder and the non-responder group in sex, age, duration of diabetes, serum creatinine level, 24 hour urinary album in excretion rates, HbA_1c, frequency or severity of microangiopathy, and serum Epo level. However, the responder group had higher serum ferritin (240.3±108.4 vs 25.8±3.0 ㎍/L, p<0.05) and transferin saturation level (32.7±7.9 vs 21.2±5.3 %, p<0.05). Conclusion : These results concluded that the administration of rHuEpo could be useful in treating anemia with Epo deficiency in early diabetic nephropathy and that the degree of iron storage and functional iron deficiency might affect the therapeutic effects of rHuEpo on this type of anemia (J Kor Diabetes Asso 25:364~373, 2001).

Dynamic Load Distribution Model for Deploym CORBA Applications

Kim, Chang Kap,Lee, Sang Duk,Kim, Heung Nam,Choi, Han Suk CHOSUN UNIVERSITY 1997 Basic Science and Engineering Vol.1 No.2

We need an automatic deployment tool which provide dynamic load distribution mechananisms deciding independently actual assignment and migration of CORBA objects. This paper presents the classificatio of load distribution requirements for CORBA applications and the criteria of dynamic load distribution strategies. This paper proposes a general dynamic load distribution model for the deployment of CORBA applications. The dynamic load distribution model is called the Trader-Monitor(TM) model which applies dynamic assignment strategies and migration stragegies with respect to the load index of every servers.

아까시나무造林地의 物質生産量에 關한 研究

金甲德(Kap Duk Kim),金泰旭(Tae Wook Kim),李景宰(Kyong Jae Lee),李俊選(Joon Seon Kim) 한국양봉학회 1986 韓國養蜂學會誌 Vol.1 No.1

임업에 있어서 원격탐사술의 (遠隔探査術) 적용방법에 관한 연구

김갑덕 ( Kap Duk Kim ) 한국산림과학회 1987 한국산림과학회지 Vol.76 No.1

The various conditions of photographs, especially kinds of films, combinated filters and seasons are important factors for forestry purpose aerial photography. In this paper the variations of tones were compared between color and color infrared, panchromatic black and white and infrared black and white, and among false color photographic images created by using 3 kinds of filters when prints are made. Color infrared film was good for identifying tree species, for its spectral signatures had a greater range of tones and hues than color signatures. In that case taken in May were more effective than taken April. False color photographs were not so good as color photographs because they were mostly dark and indistinct. Infrared black and white film with medium red filter showed potential for separating broad-leaved forests from conifers. MSS composed photographs, when composed with proper bands and densities, were proved useful for distinguishing land use types but not applicable to more detailed practices such as forest type separation and tree species identification.

항공사진을 이용한 산림자원조사법의 연구

김갑덕 ( Kap Duk Kim ) 한국산림과학회 1976 한국산림과학회지 Vol.30 No.1

This study was performed in Bo-Eun Gun, Chung-Cheong Buk Do. The forest types having been classified, the each area was measured by dot-grid method. The 820 sample points having been obtained by systematic sampling method, the tree heights, crown densities, crown diameters in the points were measured on the aerial photography, and the volumes per hectare were estimated by the comparison with stereogram. Thirty eight plots, which amounted to about 4.5% af all the sample points, were sampled with double sampling method and volume were measured by the ground survey method. the results were summarized as follows: 1. There is no significant differentia between the values measure by dot-grid method and the statistical values obtained by the authority for the area. 2. There is no significant differentia between the estimated values and the measured values for the volume. And the coefficient (τ) was 1.18 3. the heights of conifer trees were easily measured more or less, but it was some difficult for the deciduous trees, because the tops of trees were not observed easily. 4. All the values had a tendencies to be overestimated in the low stocked stand and to be underestimated in the high stocked stand. 5. When the aerial volume table method by ground checking needs to be used together, the work should be performed by the experienced technician and the photgraphic volume table should be made in advanced of the work

사진상에 나타난 향나무 ( Juniperus chinensis L . ) 와 수원사시나무 ( Populus glandulosa Uyeki ) 의 색조변화에 관한 연구

김갑덕 ( Kap Duk Kim ) 한국산림과학회 1971 한국산림과학회지 Vol.13 No.1

N/A In order to elucidate the feasibility to identify the plant species through the photographic tone this study was made. In this study the author made photographs of Juniperus chinensis L., and Populus glandulosa Uyeki, with the panchromatic film using either yellow filter or red filter in different seasons respectively. The author analyzed the value of tone variation at the level of stereoscopic view of the same photographs by using none scale and Automatic Micro-Photo-Densitometer. The results obtained are summarized as follows: A. Tone scale reading 1. The tone of Populs glandulosa Uyeki was darker than that of Juniperus chinensis L. in a photograph. 2. Regardless of the tree species, tone of photographs obtained with yellow filter was darker than that with red filter. 3. Along the progresses of seasons, the photographic tone was changed. That is, from the spring to the summer it showed darker and than, from the summer to winter it changed lighter. 4. During winter and spring the discrimination between the both species of trees can be easily made by stereoscopic view whether there are leaves on the tree or not rather than by tone observation. 5. Regardless of tree species, variation of tone due to the age was noticed. The older trees have darker tone than the younger one. 6. It is recognized that the yearly difference depends on insolation quantities. 7. The highest reflex light-waves were in between 600 mμ and 660 mμ for both species of trees. B. Density reading 1. For the density reading, there was the same tendency as in tone scale reading. 2. The changes of peaks of the scanning curves with Populus glandulosa Uyeki is smoother and takes place in lower position than with Juniperus chinensis L. 3. The scanning curves on the 20th May was smoothest, and change of peaks increased gradually according to the season progresses. 4. In relation to the types of filter the photographs with yellow filter showed less changes of peaks then that with red filter.