pH-ISFET/Pt/REFET/차동증폭법을 이용한 마이크로 수소이온센서

이성률,남태철 嶺南大學校 工業技術硏究所 1990 연구보고 Vol.18 No.2

For the miniaturization of H-ion sensor, the reference electrode should be miniaturized. This can be achieved by differential amplification system with pH-ISFET/Pt/REFET. REFET(REference FET) was developed by forming TPB added PVC membrane on the ISFET gate. This new REFET for the differential amplifier consisting of pH-ISFET/Pt/REFET has shown a good operating characteristics. The new micro H-ion sensor have shown a sensitivity of 52.8mV/pH with a good linearity in the range of pH4 to pH10, and been able to eliminate the effects of temperature and light.

慶北地域에 自生하는 산달래의 倍數體分布와 核型分析

李誠恩,黃海鎭,吳仲烈,韓相政 대구효성가톨릭대학교 응용과학연구소 1997 응용과학연구논문집 Vol.5 No.-

산달래의 優良地方種 選拔과 育種을 위한 資料를 얻고자 慶北地域을 중심으로 倍數體分布와 核型을 調査한 結果를 要約하면 다음과 같다. 1)신달래는 染色體數 x=8을 基本으로 하고,2倍體 이외의 倍數體가 自生하고 있다는 事實이 알려져 왔으나 本 實驗에 供試한 慶北의 18個地域(行政區域上의 郡 單位)으로 부터의 蒐集種 가운데 15個地域의 蒐集種에서 4倍體(2n=4x=32)를,그리고 3個地域의 蒐集種에서 5倍體(2n=5x=40)를 볼수 있었고 2倍體는 볼수 없었다. 2)그리고 同一地域에 있어서도 4倍體와 5倍體가 混生하고 있음을 볼 때 이들은 自生地의 局部的인 生育環境에 따라 散發的으로 分布하고 있다고 생각되었다. 3)4培體와 5培體의 核型은 모두 中部,次中部및 次端部染色體로 이루어져 있고,매우 드물게 次中部染色體에서 附隨體를 볼수 있었다. 그리고 4培體의 核型은 20V+12J,23V+Vt+8J및 24V+8J의 3型으로,5培體의 核型은 25V+15J및 30V+10J의 2型으로 區分할 수 있었다. 4)18個地域의 蒐集種別로 본 가장 긴 染色體의 길이는 11.76(奉化)~23.47㎛(迎日)였고,가장 짧은 染色體의 길이는 4.24(英陽)~8.53㎛ (店村)였는데 迎日,英陽,鬱陵 및 盈德地域의 蒐集種에서는 각각 19.00㎛ 以上이 되는 特히 긴 1個의 染色體를 볼수 있어 注目되었다. This study was carried out to obtain the basic informations of a selection of superior geo-eco-type and breeding. The results in this study obtained were summarized as follows : 1. A basic number of chromosome of Allium grayi is x=8. Out of 18 localities of Allium grayi in this experiment examined, 15 localities have tetraploid, 3 localities have pentaploid, and diploid was not founded. 2. This result indicated that tetraploid and pentaploid plants are mixed in the same localization. It was supposed that it was distributed sporadically according to growth environment in each localization. 3. Karyotypes of tetraploid and pentaploid consisted of metacentric, submetacentric and subterminal chromosomes. They were investigated rarely satellite in sumbetacentric chromosome. Karyotypes of tetraploid were divided into three different types as 20V + 12J, 23V+V^t+8J and 24V+8J. Karyotypes of pentaploid were divided into two different types as 25V+15J and 30V+10J. 4. Out of 18 collected varieties, the length of the longest chromosomes were revealed 11.76 (Bonghwa)∼23.47㎛(Yungil), and the length of the shortest chromosomes were 4.24(Yungyang)∼8.53㎛(Jumchon). The collected varieties from Yungil, Yungyang, Ulleung and Yungduk have a long chromosome(〉19.00㎛) that has not detected other varieties.

초기설계단계에서 건물요소별 비용분석을 위한 DB구축 모델에 관한 연구

이동준,박상준,전재열 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2

Recently, the importance of cost control is increasing in the early design phase. But there is little information that can be used in the early design phase. and cost data of work item is difficult to recognize cost changes by functional alternative change in the design phase. It is necessary to constitute historical element cost data for the effective cost plan and control in the early design phase. Therefore, the purpose of this study is to present the plan of elemental cost data generation and database constitution.

제3차 한일협약 전후 관공도립실업학교의 변화 : 일본인 학부차관의 교육간섭을 중심으로 On the Intervention to Education of the Japanese Vice-Minister

이성열 한국교육사학회 2004 한국교육사학 Vol.26 No.1

In this thesis, that by the japanese colonial policy toward Korea how the Residency and the educational vice-minister was participated in the educational policy of Korea and practically in relation to the land surveying what the educational institutions were established and how these promoted the adequate persons for the colonial control of Imperial Japan will be discussed. And, for this, all these will be discussed centering on the laws of various kinds and the government and public school of vocation established by these laws. Since the Residency was established, the two great changes occurred and especially about the Third Japan-Korea Agreement corresponding to the second period, it would be said that the vocational education Shidehara Taira led was characteristic of the following. First, through the vocational school the training of workers required was planned for the enforcement of land surveying. Second, low agricultural technology and practical education was the first consideration in the vocational education. Third, the establishment of the vocational school was a temporary expedient to repress the spread of private schools that at that time the Koreans established for the save-the-nation and save-the-land movement through education. Like this, Imperialist Japan established the vocational schools for the human strength training of land surveying, the proceeding of the vocational schools laying stress on agriculture with a course of two years and the control of the private schools. But the proceeding of the vocational schools too after the Japanese annexation of Korea was changed into the vocational continuation school (later these were changed into the simple school of agriculture or the simple school of vocation) mostly. The vocational education was more changed into the form of simplicity and rapidity.

선삭변수 최적화를 위한 진화 알고리듬 응용

이성열,곽규섭 한국경영과학회 2001 經營 科學 Vol.18 No.2

This paper presents a machining parameter selection approach using an evolutionary computation (EC). In order to perform a successful material cutting process, the engineer is to select suitable machining parameters. Until now, it has been mostly done by the handbook look-up or solving optimization equations which is inconvenient when not in handy. The main thrust of the paper is to provide a handy machining parameter selection approach. The EC is applied to rapidly find optimal machining parameters for the user's specific machining conditions. The EC is basically a combination of genetic algorithm and microcanonical stochastic simulated annealing method. The approach is described in detail with an application example. The paper concludes with a discussion on the potential of the proposed approach.

웨이트 트레이닝이 여성의 신체조성에 미치는 영향

이성열,이한경 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.6

The purpose of this study is to find out in what way the 16 weeks of aerobic training and circuit weight training have influence on the body composition of an overweight female in her 30's and 40's. As a training method, with an intensity of 50 percent of the maximum heart rate 20 minutes of aerobic training, running, has been enforced along with a gradual increase in time and intensity, and intensity weight that each testee can repeat 12reps, 3set the circuit weight training was carried into effect 5 days in a week for 15 weeks. In the process Dr analyzing the changes in the body composition between before having to run and do the circuit weight training and after having to do so shoed some differences in the weight, lean body mass, at and at ratio after the training. Ultimately, to obtain the basic information that would help the body shaping, we divided the testees into 2 groups according to their at ratio and made a comparison study of the datum before and after the test to see which group ends up with the greater result. The data will be displayed by using the SPSS-PC statistics package with all the results of variable in average and standard variance. The difference approval of the result of body component ratio is the Paired samples statistics with the significance level of difference approval limited by below p<.05 and the comparison between the two groups is the Two way anova with the significance level of difference approval limited by below p<.05. The comparison between the two groups according to the period, by using the Two way anova, was shown as below. 1) After enforcing the excercise program, the contrast of two groups depending on the term showed no significant difference in weight, lean body mass, at mass, fat ratio and abdominal fat ratio(p<.003). As a consequence, the excercise cure lessens weight, fat mass and fat ratio, then again the lean body mass appeared statistically significant in the group of 25-30 percent of fat ratio(p<.043). However, decrease in weight and fat resulted in the group of over 30 percent of fat ratio along with a slight decrease in lean body mass. Therefore, a dietary treatment and muscle strengthening program are supplementarily necessary. Furthermore, the abdominal fat rate in the group of 25-30 percent of fat ratio showed statistically no significant difference. On the other hand, in the group of over 30 precent of fat ratio statistically appeared significantly. As a result, the abdominal fat can be solved easily as the fat rate gets higher and the frontier fat needs more concentrative excercise program. In addition, although all the testees participated in this research were the members of B fitness center, if we select the testees more diversely and combine an appropriate dietary treatment, I believe that the change in the body composition will be proven more efficiently. In further studies, various intensity, time and medicinal therapy in exercising should be researched more systematically.

인체 지방 및 간장조직 중 유기염소제류의 확인 및 정량기법 체계화

이상기,양자열,인상환,김기욱,이수연,오승민,김미영,정규혁 內務部 國立科學搜査硏究所 2001 國立 科學 搜査 硏究所 年報 Vol.33 No.-

절수에 의한 mongolian gerbil의 체중 변화에 관한 연구

이경열,송치원,김무강,조성환,류시윤,김상근,박배근 충남대학교 수의과대학 동물의과학연구소 1996 動物醫科學硏究誌 Vol.4 No.-

Recently, the mongolian gerbils have been used in neurology and the study of water metabolism because of their easy onset of epileptic seizure and typical resistance to water deprivation. The sebaceous glands which are under the control of the gonadal hrmones are differently developed from the other laboratory animals. However the physiological data on the changes of body weight following water deprivation in mongolian gerbils is not available until now. In order to investigate the effect of the water deprivation on the body weight, the animals were deprived of water for 15 days. The body weights were measured daily by the torsion balance. The mean, the standard deviation, the standard error and the coefficient of variance of the body weights were calculated. The correlation was examined. The potential regression equation was y = 61.5458 - 2.0533 * x + 0.0487 * x^2. The regression coefficient was 0.993. The results obtained were as follows : 1. The body weights of the mongolian gerbils were continuously decrased from the 1st day to the 15th day after the water deprivation. 2. The mean body weight on the water deprivation was 63.0±7.00g and that at the 15th day was 41.4 ± 5.42g. 3. The coefficients of the variance showed the highest (13.09) at the 15th day and the lowest (10.10) at the 10th day. the coefficients of the variance kept decreasing until the 10th day and thereafter gradually increased until the 15th day. 4. The changing rate of the body weight kept continuously decreasing from the 1st day to the 15th day showing the daily loss of 1.0 - 3.3%. 5.The deviations (M - QBW) between the measured values (m) and the theorical values (QBW) using the regression equation showed the highest (1.494) at the 1st day and the lowest (0.053) at the 13th day. 6. The sum of the devitions was 0.179 and that of the deviation square was 1.15. The sum of the deviation rates between the mesaured body weights and the theorical ones was 0.484. 7. The daily body weight loss showed the highest at the 1st day by 2.053g and the lowest at the 15th day by 0.591g. 8. The specific body weight changing rates which were the rate of the body weight changing velocity to the changed body weight were decreased from 0.033% at the 1st day to 0.014% at the 15th day.

PEG 분해균주의 분리와 PEG film의 상용성에 관한 연구

이제혁,정성제,이준열,전억한 경희대학교 부설 식량자원개발연구소 1993 硏究論文集 Vol.14 No.-

PEG를 sole carbon과 energy source로서 이용하는 미생물을 자연계에서 분리하였고, PEG의 분자량이 높아질수록 그 분해 미생물의 수가 감소하는 것을 확인하였다. 또한, liquid culture로서 PEG농도를 감소시키는 미생물을 선별하였고, 분해율은 PEG 8000이 약 18.8%였으며 PEG 10000은 약 25.4%인 것으로 조사되었다. PEG film의 제조를 위해 EMAA 및 EAA와의 상용성을 적외선 분광(IR) 스펙트럼을 사용하여 조사한 결과, EMAA와 EAA의 카르보닐기와 PEG의 에테르기와의 강한 수소결합이 형성으로 blend film제조시 상용성이 있는 것으로 확인되었다. Several strains capable of degrading PEGs(Polyethylene Glycols)were isolated and investigated for their biodgradation ability of PEGs. Microorganisms screened for the biodegradation studies were those grown on the PEG used as a sole carbon and energy source. It was known that the number of microorganisms decreased when grown on the high molecular weight of PEG(e.g. 20,000). A liquid culture was carried out with such microorgaisms and resulted in the decrease in PEG concentration meaning that PEG was degraded in the reactor. The biodegradability was found to be about 18.8% for PEG-8000 and 25.4% for PEG-10000, respectively. For the manufacture of biodegradable PEG film, EMAA/PEG and EAA/PEG blending ability was investigated with IR spectrum and showed that it was possible to produce blending film.

電氣分解를 開始로한 폴리메타크릴酸에 對한 초산비닐의 그라프트 共重合에 關한 硏究

李萬熙,李相烈 嶺南大學校 工業技術硏究所 1986 연구보고 Vol.14 No.2

The graft copolymerization of vinyl acetate (VAc) on poly (methacrylic acid) (PMA) in methanol-sodium methoxide as dispersion medium was carried out by electrolysis. Poly (methacrylic acid) was electrolyzed at 30℃ in 1.962g methanol-sodium methoxide solution in a glass apparatus provided with two polished platinum disk electrodes under the constant current density (300mA/d㎡). Before electrolysis, the alkali was partially neutralized in order to increase the electrical conductivity. The electrolysis of a poly (methacrylic acid) in methanol produces macroradicals with simultaneous evolution of carbon dioxide at the anode. The electrolysis was characterized by evolution of carbon dioxide at the anode. The electrolysis was characterized by evolution of carbon dioxide at the anode. Such carbon dioxide evolved during electrolysis was absorbed in barium hydroxide solution. Polymer was formed at the anionic cathode copolymerization. The incidence of graft yield was generally observed as the extent of conversion advanced beyond about 30%. The factors such as concentration of monomer, reaction temperature, reaction time, methanol-sodium methoxide solution of various compositions, and impressed current affecting the graft copolymerization of vinyl acetate on poly (methacrylic acid) initiated by electrolysis were investigated. The grafting had maximum values with the concentration of vinyl acetate. The graft yield increase with increase of monomer, reaction temperature, and methanol/sodium methoxide solution of various composition up to 1.28M, 30℃and 98/2 V/V% and thereafter it decrease. The graft yield increases steadily with increasing reaction time, current density. The solubility of polymer was increased with increase of the concertration of sodium methoxide in polymerization system. Polymer was insoluble common solvents.