식물의 대사에 미치는 요소질소의 영향 (2) 대맥근에 (大麥根) 흡수된 후의 질소대사

김준호 (Joon Ho Kim) 한국식물학회 1962 Journal of Plant Biology Vol.5 No.2

KIM. Joon Ho (Dept. of Biology, Kongju Teacher`s College): The effects of urea nitrogen on the metabolism of plants. Ⅱ. The response of some nitrogen components of barley to urea and other nitrogen in water culture. Kor. Jour. Bot. V(2), 6-12. 1962. For the comparison with the previous paper (4) the present report deals with the absorption and metabolism of urea and other nitrogen ions in barley seedling absorbed through root. 1. The amount of nitrate in barley treated with urea reach it pcak on the 8 th day, NO_3 on the 4 th, NH_4 on the 6 th or 8th. respectively. 2. The ammonia content in urea group reaches its peak on the 6 th day but other groups on the 4 th day. The present data in the urea group show to shorten 4 days compared with that of the previous paper (4). 3. The content of total amide from the present data are gradually increased on all of the groups during this experiment. These are agreement with the result of the previous paper (4). 4. The alcohol soluble nitrogen in the urea group shows the similar tendency to the NaNO_3 group but reaches its peak 2 days later than in the (NH4)_2SO_4 group. 5. The content of total nitroaen in the urea series has the lowest amount at the beginning while the richest from the 4th day after. These would be explained on that the absorption of urea is delayed and the PH in the urea solution does not change, so called physiological neutralily. The author should like to express his sincere thanks to Prof. M. J. Lee of Seoul National University for his valuable advices.

자산담보부 단기사채를 활용한 해외발전사업 수주확대방안

김준호,문윤재,이재헌,Kim, Joon-Ho,Moon, Yoon-Jae,Lee, Jae-Heon 한국플랜트학회 2015 플랜트 저널 Vol.11 No.1

This study is about whether the new Project Finance scheme called "Asset Backed Short Term Bond(ABSTB)" with Project Finance Guarantee Cover provided by Korean Exim Bank(KEXIM) is an appropriate and valid financing structure, through close examinations on domestic and overseas IPP case studies. This study clearly indicates that (i) the interest rate of ABSTB with KEXIM's Project Finance Guarantee is relatively more competitive than the interest rate of other ABSTB guaranteed by EPC Companies (ii) the lower credit rated EPC companies make higher ROE(Return on Equity) through this financing structure. Lastly, Korean EPC Companies can secure profitability through this innovative financing scheme which will also lead to winning more power plant Contracts and become globally competitive. 본 연구는 최근 도입된 단기사채를 통해 한국수출입은행의 대외채무보증과 연계하여 자산유동화 구조에 접목한 자산담보부 단기사채의 금리를 추정하고 해외 투자개발형 민자발전사업의 수주 확대를 위한 프로젝트파이낸스의 한 방안으로 이용할 수 있는지에 대한 것이다. 회사채 신용등급 AA-부터 BBB+까지 건설사 자산담보부 단기사채와 비교한 결과, 자산 유동화 구조와 접목한 한국수출입은행의 대외채무보증부 자산담보부 단기사채는 금리 경쟁력이 있고, 프로젝트의 자기자본수익률이 개선됨을 확인할 수 있었다. 특히, 본 금융구조는 회사채 등급이 낮은 시공사에 적용할수록 더 높은 자기자본수익률 확보가 가능함을 알 수 있었다. 이를 통해, 경쟁력 있는 자산담보부 단기사채 금융조건은 수요 창출 및 수익성 확보는 물론 우리기업의 해외 투자개발형 민자발전사업 수주확대에 기여할 것으로 기대된다.

가스배관 위치이동 해석 및 응력 예측 기법 개발

김준호,김동현,이상근,홍성경,정석영,Kim, Joon Ho,Kim, Dong Hyawn,Lee, Sang Geun,Hong, Seong Kyeong,Jeong, Sek Young 한국강구조학회 2009 韓國鋼構造學會 論文集 Vol.21 No.3

가스배관이 매설된 지역에서 지면고에 변화가 발생하는 공사 수행시 가스배관의 안정성을 확보하기 위한 위치이동을 수행한다. 본 논문에서는 위치이동에 따른 배관의 구조해석을 위한 모델링 방법의 최적화와 함께 위치이동의 단계별 발생 응력을 실시간으로 예측하기 위한 방법을 제안하였다. 모델링 방법으로는 요소의 종류와 크기, 배관 매설부의 경계조건 처리 방법, 세장비에 의한 기하학적 비선형 특성 등의 영향에 관하여 분석하였으며 정확성을 확보하면서 해석 효율을 높일 수 있는 조건을 구하였다. 배관의 응력 예측을 위해서는 위치이동의 수 단계에 발생하는 배관위치 및 최대응력 정보를 이용하여 인공신경망을 학습시켰으며 학습 후 세부 이동단계별 배관의 위치와 최대응력을 예측할 수 있도록 하였다. 개발된 응력예측시스템은 윈도우 환경의 프로그램으로 개발하였다. If there are some construction works that affect the stability of buried pipelines, the pipelines should be moved to guarantee their safety. In this paper, modeling methods for analyzing the movement of pipelines were sought, and the step-by-step stress estimation method of moving pipelines was developed. Some factors affecting of pipeline response such as the element type, the element size, boundary modeling, and geometric non-linearity were quantitatively investigated. In addition, some conditions in which accuracy and effectiveness can be compromised in the analysis of long pipelines were identified. A neural network was used to estimate the pipeline stress. The inputs to the neural network included step-by-step displacements, and the output was the resulting stress at each movement step. After training the neural network, it can be used to estimate pipeline stresses at some sub-steps that are not included in the training. A Windows-based stress estimation program was developed.

은수원사시나무의 조림지의 (造林地) 생산구조와 생산성

김준호,선순화,이석구,김정석 ( Joon Ho Kim,Soon Hwa Sun,Suk Koo Lee,Chung Suk Kim ) 한국산림과학회 1977 한국산림과학회지 Vol.35 No.1

The productive structure and the productivity of ×Populus albaglandulosa plantations, where are middle parts of the Korean peninsula, were studied by means of stratifying clip technique and of allometry. The densities of stands in the sample areas were 693 trees/ha in 6 year-old plantation and 527 or 625 trees/ha in 9 year-old one. The photosynthetic part of the productive structure was not shown normal conical form but layering. So this was efficient to transmit solar radiation into the stand floor. The standing crop of the terrestrial parts of 6 year-old plantation was 18.11 ton/ha and that of 9 year-old one 38.8 to 47.3 ton/ha. The wood volume to trunk to 6 year-old was 31.3㎥/ha and that of 9 year-old was 68.8 to 83.9㎥/ha. The annual net production of 6 year-old plantation was 4.8 ton/ha/year and that of 9 year-old one was 10.0 to 11.7 ton/ha/year and its wood volume of trunks was 17.9 to 21.1 ㎥/ha/year. In the 9 year-old plantation the standing crop or the annual net production was different between two sample areas. This seemed that the cause was not due to chemical character but to physical character of soil.

SCL EM 반작용 휠의 시간응답 최적화를 위한 비례 이득 추정

김준호,이상욱,전동익,오화석,Kim, Joon-Ho,Lee, Sang-Wook,Cheon, Dong-Ik,Oh, Hwa-Suk 항공우주시스템공학회 2009 항공우주시스템공학회지 Vol.3 No.4

The driver's speed control to the satellite's mission is required. Therefore, optimal control over the value of benefits is required. Driver to control the characteristics of the driver and the driver was analyzed. Experimental results based on the estimated parameters using the equations of motion and was passed to save the function. Using optimization techniques applied to estimate the proportional term gain was the result of the analysis.

Ti base alloy 의 플라즈마 질화

김준호,이창희,윤의박 ( Joon Ho Kim,Chang Hee Lee,Eui Pak Yoon ) 대한금속재료학회 1997 大韓金屬學會會報 Vol.10 No.1

식물의 대사에 미치는 요소질소의 영향 (4) - 질소처리후의 탄수화물함량의 변화에 대하여

김준호 (Joon Ho Kim) 한국식물학회 1964 Journal of Plant Biology Vol.7 No.1

KIM, JOON HO (Dept. of Biology, Kongju Teacher`s College) Effects of Urea Nitrogen on the Metabolism of Plants Ⅳ. On the change of simple sugar content in plants treated with nitrogen. Kor. Jour. Bot. Ⅶ (1):11-14, 1864. Change of the amount of carbohydrates in relations with nitrogen metabolism was studied under the different manners of supply and with different sources of nitrogen. In barley plant supplied with nitrogen through root, the depression periods of glucose and sucrose content occurred at 2 days after, but the amounts of both sugars were different with the different sources of nitrogen; there were in sequence diminished by treatement of NO_3, NH_4 and urea. In sunflower leaves sprayed with urea both sugar contents were inversely related to the urea concentration speayed, and depressing periods of the sugars appeared immediately in the N-deficient plant but late in the N-abudant one.

식물의 대사에 미치는 요소 질소의 영향 (3) 해바라기에 엽면산포 (葉面散布) 한 후의 엽록소함량의 변화에 대하여

김준호 (Joon Ho Kim) 한국식물학회 1962 Journal of Plant Biology Vol.5 No.4

KIM, Joon Ho (Dept. of Biology, Kongju Teacher`s College) Effect of urea nitrogen on the metabolism of plants(Ⅲ). On the change of the chlorophyll content in suflower leaves after the urea foliar spray. Kor. Jour. Bot. V(4): 6-10, 1962. Leaf samples, raised on the N-deficient and N-abundant sand and sprayed with varying concentration of urea, were analized for their total chlorophyll concentration. It was observed that the depession periods of the chlorophyll content appeared at first by spraying with urea; it appeared on the 3rd day in the N-deficient plots and on the 6 th day in the N-abundant plots. Causes of the depression of chlorophyll may be assumed to be in an excessive urea, an accumulation of ammonia from urea absorbed, and depression of water content owing to urea application. The maximum content of the chlorophyll was shown on the 6th day in N-deficient and on the 12 th day in the N-abundant plots. The young leaves actively formed the chlorophyll by urea foliar spray, compared with the mature ones. This result was consistent with previous paper^(5).

육상식물의 생산력추정을 위한 상대생장법의 이용에 대하여

김준호 (Joon Ho Kim) 한국식물학회 1970 Journal of Plant Biology Vol.13 No.1

In order to approach a reasonable method for the indirect estimation of the productivity in terrestrial plants, allometric method was studied with herbs, such as Boehmeria frutescens and Hibiscus mutablis, and scrubs, such as Robinia pseud oacacia and Morus alba f. Ilchiroe. Allometric relations between D^2_30 H, square of the stem(or shoot) diameter (D_30) on 30㎝ height above ground multiplied by stem length (H), and the amount of the stem (Ws), or of the leaves per stem, were fitted to each material plant with linear regression. The allometric coefficient in relation of D^2_30H to Ws was approximated between scrubs having different life form, and the allometric function in relation of D_F^2 to W_L was common between herbs in spite of having different growth habitat. As the allometries between D^2_30H and W_S or W_L were changeable with the seasonal change it function should be calculated repeatedly whenever investigating the standing crop of such community. It is able to utilize an indirect value of D_30 obtained from the allometry between D_30 and H because direct measurement of D_30 in the field is accompanied by troublesome and waste of much time.

삼림의 생산구조와 생산력에 대한 연구 - 2. 춘천지방의 소나무림과 신갈나무림의 비교

김준호(Joon Ho Kim),윤성모(Sung Mo Yoon) 한국식물학회 1972 Journal of Plant Biology Vol.15 No.3

A comparison between the productivity of the evergreen needle pine(Pinus densiflora) and of the deciduous broad leaved oak(Quercus mongolica) stands, which is located near Choon-Chun city, Kangwon dist. have been established. The pine stand had a stand density of 938 trees per ha and oak stand had of 638 trees per ha. The diameter at breast height (D) and the height of tree (H) of each tree were measured in sample plot of 800㎡. Twelve standard sample trees chose from the sample area felled down, and then weighed the stem, branches and leaves separately, according to both the stratified clip technique and the stem analysis. The vertical distribution of photosynthetic system was arranged effectively for high productivity in the productive structure of both trees. The allometric relation between D^2H and dry weight of stem(Ws), branches(Wb) and leaves(Wl) of pine were approximated by log Ws=0.6212 log D^2H-0.5383 log Wb=O.4681 logD^2H-0.7236 log Wl=0.2582 logD^2H-5.1567 and those of oak were approximated by log Ws=0.5125 log D^2H+0.0231 log Wb=0.5125 log D^2H-0.3755 log Wl=0.8721 log D^2H-2.9710 From the above, the standing crops of pine and oak in the sample area were estimated to be as much as 38.83ton and 48.11 ton of dry matter, above ground, per ha, respectively. Annual net production as the sum of the biomass newly formed during one year was appraised at 12.66ton/ha·yr in pine stand and at 8.74 ton/ha·yr in oak. The reason of high productivity of pine sfand compared with oak might be resulted from much more about 4 times of the amount of the photosynthetic system, but less non-photosynthetic one of pine than those of oak. To increase the productivity of the forest stands investigated it was necessary to make densly a stand density, to be abundant in the inorganic nutrients and to preserve much water in soil to conserve the litters.