大麥集團에 대한 遺傳分析

黃弼聖,李在順,鄭元福 東亞大學校附設 農業生命科學硏究所 1999 農業生命資援硏究 Vol.8 No.1

大麥의 收量에 대한 相關關係를 밝히고 각 형질간의 直·間接效果를 평가하여 선발지수를 작성함으로써 有用形質의 選拔에 대한 基礎資料를 얻고자 皮麥 5品種과 裸麥 5品種을 재배하여 遺傳力, 相關關係, 經路係數, 選拔指數를 算出한 結果는 다음과 같다. 遺傳力은 皮麥의 경우 葉長에서 99.55로 가장 높게 나타났으며 千粒種을 제외한 모든 형질에서 76.86-99.55%로 높은 수치를 나타내었다. 裸麥의 경우 桿長 및 葉長에서 99.55%로 가장 높았고 節間直莖을 제외한 모든 형질에서 93.26-99.95%로 매우 높은 수치를 보였다. 形質間의 相關關係에서 皮麥은 節間直莖과 葉長, 節間直莖과 葉幅, 葉長과 葉幅, 桿長과 千粒種, 芒長과 千粒種, 穗長과 葉幅에서 正의 相關으로 有意性을 보였다. 그리고 穗長과 桿長, 桿長과 葉幅, 芒長과 1穗粒數, 千粒種과 1穗粒數에서 負의 有意한 相關이였다. 裸麥의 경우 桿長과 葉長, 穗長과 芒長, 葉幅과 千粒種, 葉幅과 1穗粒數가 正의 相關으로 有意性을 보였으며 穗長과 節間直莖, 穗長과 葉幅, 穗長과 1穗粒數에서 負의 相關으로 유의하였다. 經路係數분석에서 皮麥의 直接 또는 間接效果는 대체로 葉幅과 節間直莖 등이 크게 영향을 미친 것으로 評價되며, 裸麥의 直接 또는 間接效果는 桿長,穗長,節間直莖, 葉幅이 크게 影響을 미친 것으로 평가된다. 選拔指數에서는 皮麥은 단일 형질에서 節間直莖(X₃)의 指數가 가장 높았고, 葉幅,穗長,葉長의 順으로 높았다. 단일형질에서 가장 높았던 절간직경은 대부분의 여러 形質組合에서 指數가 높은 傾向을 보였다. 裸麥의 경우에도 단일형질에서 節間直莖(X₃)의 지수가 가장 높았으며 葉幅, 葉長, 千粒種의 순이었다. This experiment was carried out to analysis gentic basis data for selection of useful character. it was evaluated to heritability, correlation, path coefficient and selective index. The heritability of characters were spike length, culm length, culm diameter, length of leaf, leaf width, awn length, 1,000 grains weight and number of grains per spike. The heritability of hulled barley were showed from 76.8% to 99.55% and length of leaf was the highest from 99.55%. The heritability of naked barley were showed from 93.26% to 99.55% and culm length and length of leaf were highest as 99.55%. In correlation coefficients among characters in hulled barley, relationships between culm diameter and length of leaf, culm dameter and leaf, width, length of leaf and leaf width, culm length and 1,000 grain weight, awn length and number of grains per spike were showed significant positive correlation. In correlation coefficients among characters in naked barley, relationships between culm length and length of leaf, spike length and awn length, culm length and awn length, leaf width and 1,000 grains weight, leaf width and number of grains per spike were showed significant positive correlation. It was estimated from the path coefficient analysis that direct effects and indirect effects related number of grain per spike were most affected by leaf width and culm diameter in hulled barley and by culm length, culm diameter and leaf width in naked barley. The selection weight of culm diameter was the highest of all the characters or common the combination of all the characters in hulled barley. The selection weight of culm diameter was the highest of all the characters or common the combination of all the characters in naked barley.

원자력발전소 케이블관통부 충전시스템 평가용 소프트웨어 개발 Ⅰ

윤종필,권성필,조재규,윤인섭 한국화재소방학회 2004 한국화재소방학회논문지 Vol.18 No.1

본 논문은 원자력발전소 방화벽에 설치된 케이블관통부 충전시스템(CPFS: Cable Penetration Fire Stop)안에서 일어나는 동적 열전달 현상을 해석하기 위해 수행된 실험을 다루고 있다. Dow Coming사의 내화성 충전물에 대해서 내화실험이 수행되었으며, 본 실험을 통해 준비된 CPFS 시험체가 성능위주 시험방법인 ASTM I-81처 F-rating과 I-rating을 동시에 만족시킬 수 있는지를 알아보았다. 그리고 여기서 얻어진 실험결과는 CPFS시스템 내화성능 평가용 소프트웨어를 개발하기 위해 사용되었다. CPFS 시스템 내에서의 열전도 현상은 주어진 초기조건과 경계조건하에서 Parabolic PDE(Partial differential equation)로 수식화 되었으며, 이렇게 수식화된 PDE는 다시 연속과완화법(SOR: Sequential over-relaxation)과 Galerkin 유한요소법(FEM: Finite element method)로 구성된 혼합알고리즘에 따라 풀 수 있었다. PDE을 풀기 위해 널리 사용되고 있는 상응소프트웨어 Femlab을 이용하여 방화시스템 내에서의 온도분포를 계산하여 3차원 그래픽으로 나타내었다. 특히 CPFS시스템 내에서의 시간의 경과에 따른 온도분포의 변화에 대한 실험과 수치해석을 병행함으로써 결과에 대한 신뢰성을 높일 수 있었다. In this work the dynamic heat transfer occurring in a cable penetration fire stop system built in the firewall of nuclear power plants is three-dimensionally investigated to develop a test-simulator that can be used to verify effectiveness of the sealants. Here was carried out an experiment to observe the heat transfer in the cable penetration fire stop system made of DOW CORNING products. The dynamic heat transfer occurring in the fire stop system is formulated in a parabolic partial differential equation subjected to a set of initial and boundary conditions. And it was modeled. simulated, and analyzed. The simulation results were illustrated in three-dimensional graphics and were compared with experimental data. Through the simulations, it was shown clearly that the temperature distribution was influenced very much by the number, position, and temperature of the cable streams. It also was found that the dynamic heat transfer through the cable streams was one of the most dominant factors, and the feature of heat conduction could be understood as an unsteady-state process. It is certain that these numerical results are useful for making a performance-based design for the cable penetration fire stop system.

워크스테이션 클러스터에서의 비동기 반복법의 구현

박필성,신순철 수원대학교 자연과학연구소 2000 자연과학논문집 Vol.3 No.-

The main stream of parallel programming today is using synchronous iterative algorithms, and workload balance is a crucial factor in the design of parallel programs. However, it is difficult to achieve on heterogeneous workstation clusters where the available computing power of each processor is unpredictable. As a way to overcome such a problem, the idea of asynchronous iteration has grown out and is being increasingly used and studied. But most authors use the technique on shared memory systems, which is in some sense, easy to implement. We use the algorithm in the MPI(Message Passing Interface) environment on the workstation cluster Atom at University of Suwon, that consists of 7 nodes each of which has 2 Celeron CPUs. We reprot implementation details and numerical experiments of the asynchronous algorithm, together with that by usual synchronous algorithms.

TiO_2 光觸媒를 利用한 Diazinon의 光分解에 관한 硏究

류성필,오윤근 한국환경과학회 2000 한국환경과학회지 Vol.9 No.2

Considerable interest has been shown in recent years towards utilizing TiO_2 particles as a photocatalyst in the degradation of harmful organic contaminants. In this study, photocatalytic degradation of diazinon which is extensively used as a pesticide in the agriculture field, has been investigated with UV-illuminated TiO_2 in aqueous suspension as a function of the following different experimental parameters : initial concentration of diazinon, TiO_2 weight, UV wavelength, pH of the solution. Photodegradation rate increased with decreasing initial concentration of diazinon and with increasing pH of the solution. Photodegradation rate increased with increasing TiO_2 weight, but was nearly the same at TiO_2 weight of 1 g/ℓ , 2 g/ℓ , i.e., for initial diazinon concentration of 5 ㎎/ℓ . UV wavelength affecting on the degradation rate of diazinon decreased in the order of 254 nm > 312 nm > 365 nm. For TiO_2 weight of 1 g/ℓ and initial diazinon concentration of 5 ㎎/ℓ , the photodegradation removal of diazinon was 100% after 130 min in the case of 254 nm, but 95% in the case of 312 nm, and 84% in the case of 365 nm, after 180 min. The photodegradation of diazinon followed a first order or a pseudo-first order reaction rate. For initial diazinon concentration of 5 ㎎/ℓ , the rate constants(k) in UV and TiO_2(1g/ℓ )/UV system were 0.006 min^-1 and 0.0252 min^-1 at 254 nm, 0.0055 min^-1 and 0.0104 min^-1 at 312 nm, and 0.004 min^-1 and 0.0092 min^-1 at 365 nm respectively.

웨이브릿 변환을 이용한 문자인식 전처리 기술에 관한 연구

공성필,최환수 명지대학교 대학원 1997 대학원논문집 Vol.1 No.-

This paper presents an enhanced algorithm for recognition of usage code in Korean vehicle license plate which is represented by a single Korean characters captured in noise image. The algorithm utilizes the wavelet transform and backpropagation neural networks. We use the wavelet transform for the subband decomposition. The original image is decomposed into one low frequency subimage and three high frequency subimages. Each high frequency subimage has horizontal, vertical, and diagonal directional edges. We use one low frequency subimage as a preprocessed image since it has most of the information which is required for the character recognition. This paper will give a full detail of proposed algorithm and the test results.

광촉매를 이용한 Humic Acid 광분해시 공존물질이 광분해에 미치는 영향

류성필,현경자,오윤근 한국환경과학회 2004 한국환경과학회지 Vol.13 No.3

This study aimed at improving the TiO₂ photocatalytic degradation of HA. A set of tests was first conducted in the dark to study the adsorption of HA at different coexisting material concentration. Adsorption rate increased with adding cation ion but decreased with adding bicarbonate ion. The photodegradation of HA in the presence of UV irradiation was investigated as a function of different experimental condition : initial concentration of HA, TiO₂ weight, pH, air flow rate and coexisting material. It was increased either at low pH or by adding cation ion. The increase of cation strength in aqueous solution could provide a favorable condition for adsorption of HA on the TiO₂ surface and therefore enhance the photodegradation rate. It was found that bicarbonate ions slowed down the degradation rate by scavening the hydroxyl radicals.

프로스타글란딘 E₁ 투영와 외과적 지연 처치가 당뇨 흰쥐의 횡복직근피판의 생존에 미치는 영향

조성필,전영준,송윤상,한기택 大韓成形外科學會 2002 Archives of Plastic Surgery Vol.29 No.6

Flann O'Brien의 At Swim-Two-Birds의 구조와 특징

최승필 단국대학교 1996 論文集 Vol.30 No.-

This is a thesis on the structure and peculiarities of Flann O'Brien's At Swim-Birds which is known as one of the most famous postmodernist novels. The reputation of At Swim-Two-Birds has developed since it was first published in 1939, it made no impact then, but after the book was reprinted in 1960 it attracted growing circle of admirers and most critics came to appreciate it one of the masterpieces of English fiction. This is a study on the general characteristics and poetics of metafiction, especially on the aspects of fragmentation and collage and the poetics of Chinese box style structure. Most postmodernist writers repudiates the metanarrtives and totality; they believe that no one can any longer grasp what is going on in a society as a whole. So rejecting totality postmodernists stress fragmentation of time, of human subjects, of structure of fiction, of society itself. As Ronald Sukenick said, reality doesn't exist, time doesn't exist, personality doesn't exist. Now no one knows the plot. Life and fiction are no longer distinguishable one from the other and if we agree that life is never linear, that life is chaos because it is never experienced in a straight, chronological line, than linear and orderly narration is no longer possible. The plot having disappeared it is no longer necessary to have the events of fiction follow a logical, sequential pattem. Fragmentation, pastiche and collage take the place of sequential plot, and become the peculiarities of postmodernist fiction. While modernist text may have worked to combat the imposition of single, authoritative meaning, postmodernist metafiction tends more to play with the possibilities of meaning and of form. At Swim-Two-Birds is a metafiction ―a novel about writing a novel―in which both the process and the form are examined. Metafiction is fiction about fiction―that is fiction that includes within itself a commentary on its own narrative. This novel epitomised a phase of the postmodernist concern about the novel form―that is Chinese box metafiction or mise-en-abyme technique, and it did so in a radical, parodical way. In fact, the work is a kind of metafictional mise-en-abyme. Within that outer big frame there are multiple inner small frames, created by different narrative voices which revolt against it. This is the parody of Chinese box mise-abyme form. What the formalists called 'defamiliarization' is at work in this metafictional parody. The laying bare of literary devices in metafiction brings to the reader's attention those formal elements of which, through over-familiarization, he has become unaware. Through his recognition of the backgrounded material, new demands for attention and active involvement are brought to bear on the act of reading.

식물의 초기 잎권세균 군집 구조에 대한 분자생물학적 분석 및 산성강하물이 미치는 영향

박성주,정필문 대전대학교 기초과학연구소 2000 自然科學 Vol.11 No.1

초기 잎권세균의 군집 구조를 계통분류에 의하여 규명하기 위하여 떡갈나무(Quercus dentate Thunb.)의 어린 잎을 대상으로 하였으며 동시에 산성강하물과 같은 대기오염이 세균군집 구조에 미치는 영향을 파악하기 위하여 공단지역과 청정자연녹지지역에 서식하는 나무의 잎을 채취하여 비교 분석하였다. 잎권세균의 16S rRNA 유전자를 PCR로 증폭하여 cloning한 결과 모두 30개의 clone을 얻었다. 이 clone들을 모두 제한효소인 HaeⅢ 및 Hinf Ⅰ로 잘라 restriction fragment length polymorphism(RFLP)을 비교 분석한 결과 9개의 독특한 RFLP 패턴 즉 계통형(phylotypes)으로 분류되었다. 이 가운데 단 1개의 계통형만이 두 지역 모두의 잎에서 나왔으며 공단지역 잎에서는 모두 7개의 계통형이 청정지역 잎에서는 모두 3개의 계통형이 확인되었다. 이런 결과에서 우리는 두 지역의 떡갈나무 잎에서 서식하는 잎권세균 군집이 현저히 다르며 공단지역 잎권세균군집이 청정지역에 비하여 훨씬 다양함을 알 수 있는 것이다. 이 9개의 계통형에 속하는 대표적인 clone들을 대상으로 염기서열을 분석하여 계통분류를 실시한 결과 잎권세균은 Bacteria 도메인(domain) 가운데 γ-Proteobacteria와 β-Proteobacteria 만이 나타날 정도로 군집구조가 아주 단순한 것으로 확인되었다. 속 수준으로 계통분류한 결과 가장 우점하는 잎권세균은 γ-Proteobacteria에 속하는 Pseudomonas 속이었다. 공단지역 잎권세균 군집에 있어 한 가지 특징은 청정지역 잎권에서 흔히 발견되는 장내세균 즉 Enterobacteriaceae가 전혀 검출되지 않았다는 사실이다. Early epiphytic bacterial community structure on the young leaves of deciduous oak trees (Quercus dentate Thunb.) collected from two types of area, polluted industrial and clean natural forest areas, were assessed by phylogenetic analysis. PGR-amplified 16s rRNA genes from epiphytic bacteria were cloned, and a total of 39 eubacterial clones were obtained from two leaf libraries. All of the clones were characterized by restriction fragment length polymorphism (RFLP) with the enzymes HaeⅢ and Hinf Ⅰ, and thus nine unique RFLP patterns (phylotypes) were identified. Only one phylotype was recovered from the bacterial communities on both leaves. Seven phylotypes were from industrial leaves, whereas only thee were from natural forest ones. This means that the epiphytic bacterial community structures are significantly different and the communities of industrial leaves are much more diverse than those of clean natural ones. By phylogenetic analysis, the cloned sequences were placed into two major lineages of the domain Bacteria, the γ- and β-subphylums of the phylum Proteobacteria. At the subphylum level, the predominant group was genus Pseudomonas of the γ-Proteobacteria. A surprising finding is that enteric bacteria were not detected on industrial leaves.

화학무기영양성 질화세균의 생리학적 탐색 및 분자적 동정

정필문,박성주 대전대학교 기초과학연구소 1999 自然科學 Vol.10 No.1

폐수처리장의 확성슬러지 시료에서 화학무기영양성 질화 세균을 무기염류선택배지에서의 배양을 통한 생리학적 방법으로 분리하여 순수배앙한 다음 이를 분자생물학적 방법으로 동정하였다. 선택배지에서 자란 50개의 콜로니를 다시 영양배지에서 배양하여 콜로니를 형성하지 못한 13개의 콜로니를 선별하였다. 이 가운데 계대배양에 성공한 4개의 균주를 농화배앙하여 16 rDNA 염기서열 분석을 통하여 질화 세균을 동정하였다. 16S rDNA의 증폭을 위한 CNA는 세균의 CNA를 추출하는 대신 순수배양된 콜로니 세포를 사용하였으며 여기에는 진정세균의 universal primer가 사용되었다. 증폭된 16S rDNA 를 RFLP(restriction fragment length polymorphism)에 의하여 상동성을 분석한 결과 4종류 서로 다른 미생물로 판단되었다. 4종류의 16S rDNA 염기서열은 National Center for Biotchnology lnformation(NCBI) 의 BLAST2.0 프로그램을 이용하여 동정한 결과 1종류는 Nitrobacter 16S rDNA와 96%의 일치도를 보였으며 나머지는 데이터베이스에는 없는 염기서열로 확인되었다. A culture-dependent molecular identification approach was used to isolate and enrich chemolithotrophic nitrifying bacteria from activated sludge of a wastewater, treatment plant. Fifty bacterial colonies were screened on selective media, and selected 13 of which were screened by inability of growth in nutrient media. Nine of thirteen screened isolates failed to grow during the sub-culture procedure, and only four pure-cultured isolates were identified y partial 16S rDNA sequencing. 16S rDNA of enriched isolates were amplified directly from colonies without DNA extraction usin universal Bacteria-specific primers. The sequence homology of four PCR products was compared by restriction fragment length polymorphism (RFLP), and all of which were unique. These four types of sequences were determined and identified using BLAST 2.0 program of National Center for Biotechnology Information. One of the 4 sequences identified was 96% identical to Nitrobacter 16S rDNA sequences and the others were not matched to any known nitrifying bacterial 16S rDNA sequences.