슬러지 순화조건과 접촉부하가 혐기상태에서 인과 유기물의 거동에 미치는 영향

박동근 한국환경과학회 1994 한국환경과학회지 Vol.3 No.4

Batch experiments were performed to evaluate the effect of sludge acclimation and contact load on the behavior of phosphorus and organic substrates under anaerobic conditions. Four different sludges were acclimated in the sequencing batch reactors operated by intermittent aeration. All the experiments performed in a bench scale have shown the following results: 1. The unreleaseable phosphorus contents for four different sludges are the range of 16 ㎎ P/g SS to 24 ㎎ P/g SS, depending on the sludge acclimation conditions. 2. All the specific substrate uptake rates(SSUR) are expressed in the first order equation for releaseable phosphorus contents. The reaction rate coefficient, k, has the values of 4.0, 8.9, and 13.8 mg COD/㎎ P/hr, depending on the contact load and sludge species. 3. As reaction proceeds, the ratios of ΔP to - ΔCOD at high contact load are almost constant. in the range of 0.10 to 0.14, but at low contact load, they increase from 0.08 to 0.27.

현대국어 흉내말의 통사ㆍ의미 특성 연구

박동근 건국대학교 1996 대학원 학술논문집 Vol.43 No.-

This study is to investicate the syntactic properties of the symbolic words in modern Korean on the basis of relevance with semantic properties of the symbolic words. First, I showed that the symbolic words are realized as various categories, and overviewed the syntactic properties of the symbolic words in each category which the symbolic words are as. Next, I took the symboic forms of high frequency as the object of my inquiry, and statcically examined the aspects that they are realized in sentences as free forms or derived forms. The conclusions are as follows: 1.A symbolic word is not a categorial type, but a object at the lexical level. Symbolic words exist in various categorial types. 2. As a result of examining a modified word and an object word(this term means the expression of the object that a symbolic word corresponds to in the real world), I came to the following conclustions. there are symbolic words with extremely limited modified and object words and symbolic words of the open types with modified and object words. The degree of restriction on the modified and the object word is related to the semantic properties of the symbolic words. The more concrete a symbolic word is, the more restricted a modified word and a object word is. 3. As a result of investigating sentence types and the position of the symbolic words in the sentences, it is clear that the position of the adverbial symbolic words generally are at the front of the modified words. The higher the ratio of the restriction on the modified, the higher this tendency is. 4. The symbolic words with the vowel opposition and the consonantal opposition have differences in the linguistic sense as well as differences in the semantic domains and these appear as the differences of the syntactic properties

運動性 精神物理學(Motor Psychophysics)的 精神 訓練이 100m 달리기 및 넓이뛰기에 미치는 效果

朴東根 淸州敎育大學校 1985 論文集 Vol.22 No.-

This study was made of 30 male students sampled ranomly in Chongju Teachers College, for the purpose of investigating what effect mental practices exercise on 100meter running and standing broad jumping. The sampled groups were composed of 3: one control group and two experimental groups. With regard to this issue, the students in one experimental group took only warming-up just before dashing into race and standing broad jumping. While the students in another experimental group took warming-up, coupling with mental practices. Followed by such warming-up and mental practices respectively, they went immediately into 100 meter running and standing broad jumping. Hereby, in terms of what a noticeable influence mental practices, made up in vein of motor psychophysics, exert on 100 meter run and standing broad jumping, this study comes to the conclusions as follows: 1. The students, who took part in 6 weeks-mental practices, showed by far more striking running power and jumping power(p<.01). 2. The students, who took part in 6 weeks-warming-up and mental practices, showed 1% of significant level. 3. Mental practices, as we expected, are proved to elevate remarkable powers of running and jumping respectively.

準備運動의 强度에 따른 100m 記錄變化에 관한 硏究

朴東根 淸州敎育大學校 1984 論文集 Vol.21 No.-

This Research is to contribute to synthentic study in the future on the warm-up in general, Despite increasing interests and the controversy over the necessity of warm-up since years ago, yet we have no report on the influence of the intensity of warm-up upon 100m-Running, which is a kind of current test items of students physical fitness from 100m-run of the selected college-boys age 20 after no-warm up, modrate-warm, and Intensity warm-up alternately. This research produced the following respectively. ① The records after moderate-warm up(about 10 min) turned out to better than after no-warm up approximately by the level of 1 percent (p <.01). ② The records after intensive (20 min) warm-up turned out to be of no significant in relation to those after moderate warm-up. ③ The records after intensive warm-up was the best(p < .01).

Training에 依한 體力 向上策 : A Study on Inprovement of Physical Fitness by Training

朴東根 淸州敎育大學校 1976 論文集 Vol.12 No.-

초등학교 체육과 수행평가 적용 방안

박동근 淸州敎育大學校 2002 論文集 Vol.39 No.-

조립형 드릴 홀더에 대한 강성해석

박동근,이양창,이준성 경기대학교 부설 산업기술종합연구소 2012 산업기술종합연구소 논문집 Vol.41 No.-

취학 전 어린이를 위한 기술교육의 이론과 실제

박동근 대한신학교 1982 논문집 Vol.2 No.-

Existence and Uniqueness of Solutions of Fuzzy Integro-Differential Equation with Nonlocal Condition

박동근,한효근,김선유 한국지능시스템학회 1998 한국지능시스템학회 학술발표 논문집 Vol.8 No.2

망막분지정맥폐쇄 환자의 반대안에서 황반부의 망막 및 맥락막두께와 미세혈관 변화 분석

박동근,류가형,최영아,사공민 한국망막학회 2019 Journal of Retina Vol.4 No.2

Purpose: The purpose of this study was to evaluate the changes in retinal and choroidal thickness and microvasculature using optical coherence tomography (OCT) and OCT angiography in the fellow eye of unilateral branch retinal vein occlusion (BRVO) patients. Methods: Twenty-two fellow eyes with unilateral BRVO and 23 normal eye controls were retrospectively analyzed. OCT was used to measure the thickness of the total retina, inner retina, the total choroid, the Haller’s layer, and the choriocapillaris/Sattler’s layer. OCT angiography was used to measure the vascular density (VD) of the superficial capillary plexus (SCP), deep capillary plexus (DCP), and choriocapillaris layers. In addition, we measured the foveal avascular zone (FAZ) area and compared the differences between the two groups. Results: The thicknesses of the subfoveal choroid and Haller’s layer measured by OCT tended to be thicker in the fellow eye of unilateral BRVO patients, but there was no significant difference between the two eye groups (p = 0.075, p = 0.531). On the other hand, the thickness of the choriocapillaris/Sattler’s layer was significantly thicker in the fellow eye of unilateral BRVO patients (p = 0.011). VD of SCP measured by OCT angiography was not significantly different between the two groups (p = 0.969), but VD of the DCP was significantly lower in the fellow eye of unilateral BRVO patients (p = 0.039). There was no difference in the FAZ area and VD of choriocapillaris (p = 0.969, p = 0.227). Conclusions: The thickness of the choriocapillaris/Sattler’s layer was increased and the DCP VD was decreased in the fellow eye of BRVO patients when compared to normal controls. 목적: 단안 망막분지정맥폐쇄 환자의 반대안에서 빛간섭단층촬영과 빛간섭단층촬영혈관조영을 이용하여 망막 및 맥락막두께와 망막과 맥락막의 미세혈관의 변화를 알아보고자 하였다. 대상과 방법: 단안 망막분지정맥폐쇄 환자 22안의 반대안과 정상 대조군 23안을 후향적으로 분석하였다. 빛간섭단층촬영을 이용하여 전체 망막과 내층망막의 두께를 측정하고, 맥락막의 두께와 함께 할러층과 맥락막모세혈관/자틀러층을 나누어 측정하였다. 빛간섭단층촬영혈관조영을 이용해 표층모세혈관총, 심부모세혈관총, 그리고 맥락막모세혈관층의 혈관 밀도를 측정하였다. 또한 망막중심오목무혈관부위 면적을 측정하여 두 군 간의 차이를 비교 분석하였다. 결과: 빛간섭단층촬영을 통해 측정한 황반하 맥락막두께와 할러층의 두께는 단안 망막분지정맥폐쇄 반대안에서 두꺼운 경향을 보였으나 두 군 사이에 유의한 차이는 없었다(p = 0.075, p = 0.531). 반면, 맥락막모세혈관/자틀러층의 두께는 단안 망막분지정맥폐쇄 반대안에서 유의하게 두꺼웠다(p = 0.011). 빛간섭단층촬영혈관조영을 통해 측정한 표층모세혈관총의 혈관 밀도는 두 군 간의 큰 차이가없었으나(p = 0.969), 심부모세혈관총의 혈관 밀도는 단안 망막분지정맥폐쇄 반대안에서 유의하게 낮게 나타났다(p = 0.039). 망막중심오목무혈관부위의 면적과 맥락막모세혈관의 혈관 밀도는 두 군 간의 차이는 없었다(p = 0.969, p = 0.227). 결론: 단안 망막분지정맥폐쇄 환자의 반대안에서 정상안에 비해 맥락막모세혈관/자틀러층의 두께 증가와 심부모세혈관총 혈관 밀도 감소를 보였다.