폴리우레탄의 상분리에 미치는 소프트-하드 세그먼트 농도의 영향

이현주,이상만,이상록,김광 동아대학교 공과대학부설 생산기술연구소 1998 生産技術硏究所硏究論文集 Vol.3 No.1

When we compared each reactivity of prepolymers during the reaction process, the mole ratio of [NCO]_T/[OH]_T which was evaluated effectively was 1.78. It was confirmed that effect of polyols was higher than that of isocyanates in comparison of reactivity according to the kinds of isocyanates and polyols. Segmented polyurethane also can be varied using the mole ratio of the polyol and the chain extender. The morphological changes induced to segmented polyurethane elastomers by varying the [NCO]_P/[OH]_P ratio during the second step of polymerization with MDI-polyether system, while keeping almost constant the total hard-segment content(∼70%) and that TDI-polysther system which was increased according to the[NCO]_P/[OH]_P ratio, were studied by means of differential scanning calorimetry(DSC).

`예외상태 상례화`로서의 유신헌법과 한국적 민주주의 담론

이상록 ( Lee Sang Rok ) 역사문제연구소 2016 역사문제연구 Vol.20 No.1

Restoration system is constantly emphasized the `sum` to configure the homogenization that `national` subjects. The core of the Restoration system was a system which encourages competition and end the crisis North Korea, it was composed in the form of economies war(經濟戰). Kim Il Sung`s only ruling bloc of the South felt a sense of urgency overlooking the ruling system, in order to win the economies around merrily under organization of national power, maximize efficiency, the flag of the `sum` for a self-help (自助) to be their labor Warriors It was required to `the people`. System was to require a `search machines` appeal under the leadership of President Park Chung-hee solar distraction of moving subjects to be `being the people`. Restoration system, basing such a rosy future, leaps and bounds growth of population livelihood as the national economy, the welfare state `80s achieved national culture` was the cry develpoment tried to secure national identity. Such efforts but also reap certain achievements, personal body on the train of industrialization in fact, state the desire of the public is constantly being difficult to differentiate and segment stitching iteotgie in the name of `the people`. Effects of consumption desires of the public and cultural needs of the industrial, social and were eager etc. for the rise is amplified, they are viewed from the banner of the `sum` `extravagant and decadent. Enjoyment. Corruption` things to be ruled out in the name of such It was. Oppression of OCD and 70 control of the ruling bloc`s ruling system configurations for homogeneous entity called `citizens` censorship surveillance. Were placed on the ground to strengthen the discipline Tuesday. Restoration regime ended by “personal domination” of the lies that were `Leader` Park on top with a 10.26 death, the state of exception was being continued in sovereign bonds of dictatorship and nationalism as `exceptions` and not `rules`.

마우스 대장암 모델 구축 및 항암제 활성 평가를 위한 예비 연구

김예솔,강봉석,이상은,이은주,이경록,정상헌,박정숙 충남대학교 약학대학 의약품개발연구소 2014 藥學論文集 Vol.29 No.-

Abstract – Aberrant crypt foci (ACF) are early imorphological changes observed in rodents after administration of colon-specific carcinogen such as azoxymethane (AOM). ACF are considered to be putative preneoplastic lesions and are widely used as a surrogate biomarker to rapidly evaluate chemopreventive potential of compounds. The size of colorectal cancer was evaluated after administration of three anticancer drugs, 1 parent drug and 2 prodrugs. The body weights of mice were measured daily and considered as a surrogate for evaluation of general wellbeing. Colons were removed, cut along the longitudinal axis and flushed with phosphate-buffered saline. Each colon was cut into three equal lengths and fixed flat between filter papers. The fixed colon sections were stained with methylene blue. The number of ACF per colon, the number of aberrant crypts observed in each focus and the location of each focus were recorded. After single administration of AOM and multiple doses of anticancer drugs, no significant changes in the body weights of the mice was observed which was recorded for 52 days. However, an expected ACF was not observed in any treated groups. These findings suggest the induction of ACF in mice requires the promotion by dextran sulfate sodium as well as the initiation by AOM.

일반화가능도 이론에 따른 체온, 혈압, 안정시심박수 검사의 신뢰도 추정

이종영,이상록 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.1

The purpose of this research is to measure body temperature, blood pressure, and resting heart rate according to the generalizability theory. This project's researchers are senior nursing students who have much experience in the measurement of body temperature, blood pressure, and resting heart rate. The control subjects for this research are seventy students who are studying sport and leisure at Daejeon University in Daejeon. According to the generalizability theory, research was carried out in three main areas and the model used by the researchers was P×Ra×(Tr : Ti). The results of the GENOVA program which support the theory are outlined below. First, the variance of body temperature in the test was 99.9%. The generalizability coeffcient for changes in body temperature of a control subject was over .99 when measured at rest, outside of test times. Second, the variance in systolic blood pressure of the control subjects during the test were found to have high percentages. The generalizability coeffcient of systolic blood pressure of a control subject was over .93 when measured at rest, outside of test times. Third, the variance in diastolic blood pressure within the control subjects during the test has fairly high percentages. The generalizability coeffcient of diastolic blood pressure of control subjects was over .89 when measured outside of test times, at rest. Fourth, the variance in resting heart rate of the control subjects during the test has relatively high percentages. The generalizability coeffcient of the resting heart rate of control subjects was over .96 when measured outside of test times and at rest. Therefore, when using the generalizability theory, an examiner who has much experience in the measurement of temperature, blood pressure, and resting heart rate can have confidence about the test result. The purpose of the generalizability theory is to design a test in which we can have more confidence and to eventually explain the cause of many errors within the current testing method. Indeed. we need to have high confidence when measuring changes in the body physiology of control subjects in the physical education field.

대전광역시 양축농가의 축분뇨 관리 실태 및 VOCs 농도 조사

이봉덕,이수기,오홍록,허정민,정기철,김성복 충남대학교 농업과학연구소 2005 농업과학연구 Vol.32 No.1

This study was carried out to investigate the style of livestock house, concentration of malodorous substances of livestock feces and livestock houses in Daejeon area. Among the livestock houses investigated, as most of cow pens(94.5%) have sawdust or chaff on the bottom, there was no leakage of feces out of pen. Most pig pens adopted slury style, but some of them currently use buffering material on the bottom. It is thought that there will be no possible contamination leakage. When it comes to hen house, all the broiler house use litters on the bottom and all the layer house use scrapper. It is also thought that there will be no possible contamination leakage. 3 out of 12 deer pens used buffering material on the bottom, 10 places were maintained in a traditional method, and 7 places left possibility of contamination leakage considering whether the roof was installed or not. The contents of ammonia, amine and volatile fatty acid in fresh feces were lower compared to rotten feces, but the concentration of sulfur-containing matter - hydrogen sulfide, methylmercapthan and ethylmercapthan were higher compared to rotten feces. In the case of malodorous ingredient in livestock houses, only small amount of ammonia and hydrogen sulfide were detected in pig pen and hen house, and other ingredients were not detectable. And those who are engaged in animal husbandry reacted negatively to the use of feed additives for decreasing malodor. In conclusion, it is not worrisome that contamination can be leaked out of animal raising facilities. But if we take into consideration that the point of investigation time is wintry season, there should be more considerate attitude. And feed additives for decreasing malodor need establishing criteria in the manufacturing process.

梔子栢皮湯이 膽道結紮로 誘發된 白鼠의 損傷肝에 미치는 影響

李相祿,田炳薰,禹元洪,鄭遇悅 圓光大學校 韓醫學硏究所 1994 원광한의학 Vol.4 No.1

Prolonged bile duct ligation; a new experimental model for cirrhosis in the rat was carried out to elucidate the effect of Chijabakpitang(梔子柏皮湯) inhibiting the progress of thought to be enough to develop liver fibrosis or cirrhosis. The development of fibrisis or cirrhosis was progressive and associated with ascites. After the 7 week administration of Chijabakpitang on the bile duct ligation performed rat, the body weight, the hematological value, and the biochemical changes such as total bilirubin, direct bilirubin, asparate aminotranferase, alanine aminotransferase, akaline phosphatase, and the level of hydroxyproline in the liver tissue of the rat were examined. The results obtained were as follows. 1. The body weight in Chijabakpitang-administered experimental groups was inclined to increase, but it didn't significantly increase. 2. WBC counts significantly dicreased in Chijabakpitang-administered experimental groups, especially the decreasing value of serum WBC count in 1ml of Chijabakpitang-administered experimental group B was significant for all experimental duration. 3. Total bilirubin level decreased in 1ml of Chijabakpitang-administered experimental group B, and direct bilirubin significantly decrease in all Chijabakpitang administered experimental groups. 4. ALP level decreased in 1ml of Chijabakpitang-administered experimental group B, and ALT and AST significantly decrease in all Chijabakpitang-administered experimental groups. 5. The level of hydrwxyproline in the liver tissue of all experimental group significantly decreased.

발열-흡열반응이 동시에 일어나는 화학반응장치의 안정성 해석

이상록,염치호,장상목,김광 동아대학교 공과대학부설 생산기술연구소 1997 生産技術硏究所硏究論文集 Vol.2 No.1

It was described that relationships between the shape of Y(T) and stability of steady state in a complete mixing type reactor in which exothemic and endothermic reactions were proceed simultaneously. These results could be obtained sufficient conditions to stable any steady state by making use of the linearization theorem. Sufficient conditions for p>0 is Y´(T)<0, for p>0, q>0 is Y´(T)<0 and Y(T)>0, where Y(T)= α_1k_1 (T)+ α_1k_1(T) and Y´(T)=dY(T) /dY(T).

연쇄가지반응 모델에 의한 화학반응 장치의 안전성

이상록,염치호,박찬규 동아대학교 공과대학부설 생산기술연구소 1997 生産技術硏究所硏究論文集 Vol.2 No.1

The method for determining the stability and multiplicity of steady states, and steady reaction region in phase plane for chain branching reaction model in perfectly mixed flow tank reactors is proposed. The results proposed are as follows : 1) stability and multiplicity of steady states exist 2 points (T_S1 : node, T_S2 : saddle) in T<T_1 range, and 2 points (T_S3 : focus, T_S4 : saddle) in T>T_2range on F(T)=0 curve. 2) steady reaction region containing the steady states can be constructed by the state varialbes of a reactor in phase plane. All trajectories of the representative points pass into the region at the boundary surface since the representative points in the region never drift out, it is safe to keep the reactor operation in the region.

액상산화반응장치의 비정상상태

이상록 동아대학교 공과대학 부설 한국자원개발연구소 1988 硏究報告 Vol.12 No.2

A method of operating for the steady and unsteady state in liquid phase oxidation reactor is proposed. It is safe to keep the state of reactor in safe region on phase plane for steady state operation and to operate the feed concentration to keep the state of reactor in the safe region for unsteady state operation. The tolerance region to safe operation decreased with the feed concentration in phase plane.

탄화수소의 액상산화반응조작에 관한 안전조작영역

이상록 동아대학교 공과대학 부설 한국자원개발연구소 1988 硏究報告 Vol.12 No.2

A method for determining the safe operating region for liquid phase oxidation of hydrocarbons in perfectly mixed flow tank reactors is proposed. This region containing the steady state can be constructed by the state variables of a reactor in state space. All trajectories of the representative points pass into the region at the boundary surface. Since the representative points in the region never drift out, it is safe to keep the reactor in the region for steady state operation and to choose the trajectories which cannot drift into an explosive region before approaching the safe operating region during the start-up of reactor.