중·고등학교 아랍어 교재 집필 및 교재 내용에 관한 연구 보고서

오명근,송경숙,전완경,사희만,이규철,조희선,정규영,최진영 한국아랍어아랍문학회 1999 아랍어와 아랍문학 Vol.3 No.1

AST의 자동적인 구성

오세만,박진기 東國大學校 1990 論文集 Vol.29 No.-

The task of constructing a complier for a particular source language is complex and large. The complexity of compilation process can be reduced if a compiler is designed modularly. So an intermediate from is needed to interface the phases of the compiler. One type of intermediate form is a tree-structured code which is a suitable form for optimization compilers. An AST is a tree-structured intermediate code which does contain the information necessary to next phase of syntax analysis. Most compliers use AST as an intermediate form because of the efficient representation of the source program. The design and obtaining of AST is important in the compiler design process. In this paper, we have implemented the automatic AST generation system. For this work, we designed GDL which is similar to grammar definition in formal language theory and able to describe the structures of AST. And then we implemented the GDLTS that generates the parser constructing the AST automatically according to the specification of GDL. This system can be used as a tool for constructing AST of source program being complied and also used as AST designing tool.

컴파일러 중간언어에 관한 연구

오세만,이양선,박진기 동국대학교 1986 論文集 Vol.25 No.-

최근의 프로그래밍 언어와 기계구조의 급격한 발전은 컴파일러의 자동생산을 요구하게 되었고, 이에 따라 컴파일러의 설계에도 많은 진보가 이루어졌다. 대부분의 컴파일러에서, 원시코드는 기계코드 보다는 중간코드로 번역이 되며 그 중간코드는 특정기계의 목적코드로 번역된다. Syntax-directed방법으로 원시언어에서 기계언어로 직접 번역도 가능하다. 그러나 우리는 중간언어를 사용함으로 해서 몇가지의 이점을 얻을 수 있다. 첫째로 컴파일러의 구성을 서로 독립적인 두 부분으로 나눌 수 있고, 두 번째로 컴파일러의 portability를 한층 더 높일 수 있다. 그리고 세 번째로 중간언어단계에서 기계와 독립적인 optimization을 할 수 있다. 실제규모의 컴파일러를 설치하는 데 있어 중간언어의 선택은 중요한 문제이다. 이 논문에서는 네가지의 중간언어를 다루었고 각 중간언어의 특징을 중간언어의 기준에 비추어 설명하였다. Recently, the programming languages and machine architectures are proliferating. This has led to automate the production of compilers. So much progress in the design of compilers has been made. In most compilers, the source code is translated into an intermediate code rather than machine code. And then the intermediate code is targetted to a specific machine. It is possible to translate directly from source to machine language in a syntaxdirected way. But we can obtain a munber of advantages by use of an intermediate language. They are: (1) The construction of a compiler can be split into two independent phases. (2) The portability of a compiler can be enhanced. (3) A machine independent optimization can be performed at the intermediate language level. The problem of intermediate language selection is very important in implementing a practical scale compiler. In this paper, four kinds of intermediate language are examined and the characteristics of each intermediate language are described according to some criteria.

Humicola sp.의 酵母細胞壁 分解酵素에 관한 연구

吳萬鎭 충남대학교 대학원 1977 論文集 Vol.9 No.-

A number of cell wall lytic fungi, capable of growing and forming clear zone around the colonies on the baker's yeast agar medium, were isolated from various soils and sewages. The stsain M-10, which was identified as a Humicola sp. according to the manual of The Fungi by Ainsworth(1973) appeared to be the most powerful strain among 386 isolates. Detailed experiments were carried out to optimize the conditions for the enzyme production by this strain in the medium containing 5% of baker's yeast, 0.3% of K₂HPO₄, 0.01% of MgSO₄, 7H₂O, 0.1% of yeast extract, and to characterized the purified enzyme obtained from the culture filtrate. Cultivation was done on a reciprocal shaker using baker's yeast mineral as basal in flasks. The results obtained were as follows: 1) The optimal conditions for lytic enzyme production were: initial pH of the medis 6.0, and temperature 33℃. 2) Among the various carban sources, baker's yeast as the concentration of 4% was the most effective for the enzyme production. Monosaccharides supported the increase in cell mass production but repressed the enzyme level as low as approximately one-tenth of those produced on baker's yeast. 3) Baker's yeast was found to be the most effective nitrogen sources for the enzyme production, whereas the other nitrogen sources supported the enzyme production with much lower level than baker's yeast did. The addition of NH₄NO₃, (NH₄)₂ SO₄, or peptone to the medium containing baker's yeast increased the enzyme level slightly but (NH)₄CO, NaNO₃, milk casein or nutrient broth resulted a made repression of the enzyme production. Baker's yeast appeared to supply enough nitrogen and carbon substances for the enzyme production without further supplements. 4) Maximum yield of the lytic enzyme was obtained by addition of K₂HPO₄ and MgSO₄ 7H₂O, at the concentration of 0.1% and 0.01% respectively, to the basal medium among various inorganic salts tested. 5) The best medium for the lytic enzyme production by the strain was found to consist of 4% of baker's yeast, 0.1% of NH₄NO₃, 0.1% of K₂HPO₄, 0.01% of MgSO₄, 7H₂O and 0.1% of yeast extracts at pH 6. 6) When the strain was cultured under the optimal conditions, the production of the lytic enzyme was increased and reached maximum level in 72 hrs. in shaking flasks. 7) The purified enzyme was obtained with the increased level of the 1ytic activity approximately 21.4 folds as compared with the orginal and the yield of 14.6% throught sequencial treatments of the culture filtrates by means of salting out with (NH₄)₂SO₄ (0.3-0.5 saturation), desalting by electric dialyzer, precipitating in acetone (30%-60%) and fractionating by the DEAE-cellulose column chromatography. 8) The purified enzyme appeared to have the optimal pH 4.0 and to be stable in the range of pH 3.5-6.0, however, it lost about 27% of the lytic activity of pH 7.0 and 53% at pH 2.0 during standing it at 15℃ for 12 hours. 9) Optimal temperature of the purified enzyme was 45℃ for the 1ytic action, and it was comparatively stable up to 55℃ and inactivated markedly above 70℃ in 60 minutes. 10) Glucan, laminarin and heat treated baker's yeast were hydrolysed rapidly but living baker's yeast was not degraded by the purified enzyme. 11) The purified enzyme of the strain was believed to be a β-1, 3-glucanase, and was capable of hydrolysing heat-treated baker's yeast alone. 12) The purified enzyme was activated by Mg^(2+) and Co^(2+) but strongly inhibited by Hg^(2+) and Cu^(2+).

대전지역에서 유통되는 농산물중의 유기염소계와 유기인계 잔류농약 함량 조사

오준세,송선아,오만진 忠南大學校 環境問題硏究所 2003 環境硏究 Vol.21 No.-

This study was carried out to elucidate contamination realities of residual pesticides on the agricultural products marketed in the Daejeon's area. From 2000 to 2002, organochlorine and organophophorus residual pesticides for 252 agricultural products marketed in the Daejeon's area were investigated and were detected those of 42 kinds. Among 252 agricultural product samples, residual pesticides of samples marketed from 2000 to 2002 were detected in 79 samples. Agricultural product samples exceeding a permission standard were 14 samples (5.6% for total) with organochlorine pesticide of 3 kinds and organophosphorus pesticide of 11 kinds. Sample showing high residual pesticide detection rate were spinach, perilla leaf, jujube, apple and celery, and detection rate of pesticides such as cypermethrin, endosulfan, folpet, procymidone, chlorpyrifos and ethoprophos was high. Among the organochlorine pesticides, detection rate and detection range of endosulfan was 10.3%, 0.0070∼2.947 ppm, cypermethrin was 6.3%, 0.134∼3.680 ppm and folpet, procymidone were 5.6% and 0.0058∼1.0715 ppm, 0.080∼1.149 ppm respectively, which, showed very low levels. Among the organophophorus pesticides, detection rate and detection range of chlorpyrifos and ethroprophos were 13.5% and 0.0180~0.6836 ppm, 5.6% and 0.0140~0.520 ppm respectively, which showed high detection rate and narrow detection range.

공주 공산성 원형연못의 지반에 대한 탄성파 굴절법 탐사

오진용,변성환,서만철 공주대학교 문화재보존과학연구소 2004 문화재과학기술 Vol.3 No.1

탄성파 탐사는 인공지진파를 이용하여 지표면 하부의 물성을 알아내는 지구물리탐사로서 20세기 초부터 석유탐사와 공학적 지반조사에 가장 널리 사용되었다. 굴절법 탄성파 탐사는 지층의 탄성파 속도를 알아내는 방법으로서 최근에는 석조문화재 등의 지반특성 조사에서 사용된 예가 있다. 이번 연구에서는 공주 공산성의 쌍수정 광장에 위치하는 공산성 원형연못 주변의 지반에 대하여 굴절법 탐사를 실시하였다. 쌍수정 광장은 기본의 발굴조사를 통하여 백제 추정왕궁지가 위치한 곳으로 알려졌으며, 광장 남쪽에 원형연못(상면직경 7.3m, 바닥직경 4.78m, 높이 3m)도 발굴되었다. 원형연못 주변에 5개 탄성파 측선을 설치하였고, 해머 타격점과 수신기 배열을 3가지 다른 방식을 적용하여 24m, 31m, 48m 측선길이의 굴절법 자료를 얻었다. 대체로 공산성 원형연못 주변의 지반은 3개 층으로 구성되어 있다. 각 층의 겉보기 속도는 약 261~391 m/s, 약 591~992m/s, 약 1950~3230 m/s이며, 첫 번째와 두 번째 측의 두께는 각각 약 2~2.4m 와 4.6~8.6m이다. 일반적으로 최하부 층의 속도는 기반암, 상부층들이 속도는 풍화토에 대응한다. 그러나 두 번째 층이 주시곡선 형태와 속도 범위는 국내 석탑 문화재 하부의 것과 유사한 것으로 보아 공산성 연못 주변은 인공적인 기초지반의 가능성을 제기하며, 그렇다면 공산성 원형연못은 파내려 간 것보다는 쌓아 올렸을 것이다. Seismic survey using artificial earthquake waves is one of the most popular geophysical method for petroleum exploration and engineering prospecting from the early 20th century. Recently seismic refraction method which can reveal the sub-surface velocity structure is introduced for the site characterization of the domestic stone pagodas. The purpose of this study is to understand seismic velocity structures of the underground near the Kongsansung Cirular Pond at the southern part of the Ssangsujung Park in Gongju. As the result of early excavations, the Ssangsujung Park has been known as the assumed site of the Palace of the Paekje Dynasty and Circular Pond (top diameter 7.3 m, bottom diameter 4.78m, and height 3m) was also discovered. Along 3 seismic lines near the Circular Pond, three kinds of source-receiver array are applied to obtain the refraction data with the corresponding maximum offset of 24m, 31m, and 48m. Shallow subsurface near the Circular Pond largely consists of three layers with the velocities of about 261~392 m/s, about 591~992 m/s, about 1950~3230 m/s, respectively. Upper two layers have the thickness of about 2~2.4 m and about 2.6~8.6 m each. In general, the bottom layer can be interpreted to the basement, and the upper layers with the lower velocities can be correlated to the weathered soil. Compared with the pattern of the traveltime-distance graph and the range of the velocities of the site near domestic stone pagodas, however, the middle layer can be interpreted as the artificial foundation. Consequently, the Kongsansung Circular Pond is possibly built upwardly rather than digging.

Acid Phytase를 생산하는 Pseudomonas fragi의 분리와 phytase의 생산조건

김영진,장은석,인만진,오남순 한국응용생명화학회 2003 Applied Biological Chemistry (Appl Biol Chem) Vol.46 No.4

cnrtkscP수가 방류되는 단위동물 밀집사육장 인근의 하천수로부터 phytase를 생산하는 세균들 중 활성이 가장 우수한 균주를 분리하여 Paseudomonas fragi Y9451로 동정, 명명하였다. 탄소원으로 fructose를 첨가할 경우에 phytase의 생산능이 가장 우수하였고, 배지에 7% 첨가할 경우에 72시간 배양 후 효소활성이 1,078mU/m로 최대의 phytase생산능을 보였다. 또한, 질소원으로는 nutrient broth(NB)가 적합하였으며, NB를 3%의 농도로 첨가할 경우에 96시간 배양 후 효소활성이 1,425mU/m까지 향상되었다. 인산원인 KH₂PO₄ phytate는 첨가 농도가 높을수록 phytase생산은 억제되었으며, 무기염으로 MgSO₄와 CaCI₂를 첨가하는 경우는 첨가농도와 상관없이 phytase의 생산을 현저히 억제하였다. 산업생산을 목적으로 하는 scale-up에 있어서의 통기교반 효과는 phytase의 생산량에 큰 영향을 미치는 것으로 나타났다. A bacterial strain producing a high level of an extracellular phytase was isolated from livestock waste water, identified as a strain of Pseudomonas fragi and designated as Pseudomonas fragi Y9451. Under the phytase production medium, the activity of phytase reached the highest level after 120 hours of incubation. On the effect of carbon sources on the phytase production, the most favorable carbon source for phytase production was fructose. As for the effect of nitrogen sources, high levels of phytase activity were detected in the medium containing nutrient broth as the nitrogen source. Free PO₄^(3-) inhibited phytase production with increasing concentration of KH₂PO₄ and phytate in the media. The addition of CaCl₂ and MgSO₄ also resulted in the inhibition of phytase production. To investigate the effect of aeration on the phytase production, different volumes of culture broth Erlenmeyer flasks were incubated in rotary shaker at the speed of 200 rpm. As a result, a high level of phytase activity was detected at small volume of culture broth at compared to larger volume because of its more aerobic condition.

Mixer-settler를 이용한 용매추출로 에칭폐액로부터 철과 니켈의 분리

이만승,이경주,이진영,안재우,오영주 대한금속재료학회 2004 대한금속·재료학회지 Vol.42 No.12

Solvent extraction and stripping experiments were conducted to separate iron from a spent FeC13 etching solution containing nickel. In the operation of mixer-settler, 7 extraction stages with 1.0 M Alamine336 in toluene, led to 98% extraction percentage of iron at equal phase ratio, when the flow rate of organic and aqueous were 35 mL/min and 5 mL/min, respectively. At equal phase ratio of aqueous to organic, 10 stripping stages with 0.01 M HC1 solution resulted in 99% stripping percentage of iron when the flow rate of stripping solution and loaded organic were 5 mL/min and 35 mL/min, respectively. The concentration of iron in the stripped solution was 133 g/L and this solution could be reused in the etching of nickel lead frame. (Received June 15, 2004)

해마 theta리듬과 pyramidal neuron의 세포내 특성과의 상관관계

권오흥,조진화,남순현,김현정,최병주,김영진,이만기 大韓小兒齒科學會 1998 大韓小兒齒科學會誌 Vol.25 No.4

Eledctrophysiological phenomena of pyramidal cells in the CAI area of the dorsal hippocampus were recorded from and filled with neurobiotin in anesthetized rats. The electropharmacological properties of membrane as well as the cellular-synaptic generation of rhythmic slow activity (theta)were examined. The intracellular response characteristics of these pyramidal cells were distinctly different from responses of inteneurons. Pyramidal cells had a high resting membrane potential, a low input resistance, and a large amplitude action potential. A afterhyperpolarization was followed a single action potential. Most of pyramidal cells did not display a spontaneous firing. Pyramidal cells displayed weak inward rectification and anodal break excitation. The slope of the frequency-current relation was 53.4 Hz/nA for the first interspike interval and 15.9 Hz/nA for the last intervals, suggesting the presence of spike frequency adaptation. Neurobiotin-filled neurons showed pyramidal morphology. Cells were generally bipolar dendritc processes ramifying in stratum lacunosum-moleculare, radiatum, and oriens. Commissural stimulation discharged pyramidal cells, followed by excitatory and inhibitory postsynaptic potentials (EPSPs and IPSPs). The frequency of theat-related membrane potential oscillation was voltage-independent in pyramidal neurons. At strong depolarization levels (less than 30 mV) pyramidal cells emitted sodium spike oscillation, phase-locked to theta. The observations provide direct evidence that theta-related rhythmic hyperpolarization of principal cells is brought by the rhythmically discharging interneurons. Furthermore, the findings in which interneurons were also paced by rhythmic inhibitory postsynaptic potentials during theta suggest that they were periodically hyperpolarized by their GABAergic septal afferents.

노인외상환자의 외상중증도계수와 동통감지력의 변화에 대한 임상적 고찰

이진웅,임경수,김영식,황성오,이강현,김선만,김 현 大韓應急醫學會 1996 대한응급의학회지 Vol.7 No.1

Because elderly individuals are participitating in social work as adult inspite of their physical handicapes such as hearing difficulty, visual difficulty and limit of motion, they are continually exposed to the risk of injury. Trauma is now fifth cause of death in elderly of over 65 years old, and the elderly suffer disproportionately high injury-related motality comparing with younger adults. In addition, sometimes elderly patients don`t complaint of pain on injured site because of high threshold to pain. We studied about occurence of neglected injury due to high threshold to pain in geriatric trauma patients. When we diagnosised injury that patients did not complaint of pain on injured site through physical examination and radiologic examination, we defined that as neglected injury. There were 8 (8%) geriatric patients who didn`t complaint of pain on injured site on admission to emergency center, but only 0.7% of adult patients had neglected injury. The severity was estimated by use of AIS(Abbreviated Injury Scale), and the severity of all neglected injuries were above AIS 2 point. The neglected injury were head injuries(4 in number), abdominal injury(1), pelvic injuries(2) and extremity injury(1). So if geriatric trauma patients were admitted to emergency center, we recommand full physical and radiological examinations although patients don`t complaint of pain.