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RIHSA와 131I-Hippuran으로 측정한 심박출량의 비교
김정일,고창순,이안기,길광수,박진영,김동섭 대한핵의학회 1970 핵의학 분자영상 Vol.4 No.2
저자들은 정상성인 남자 11예에서 방사성동위원소인 RIHSA와 (131)^I-Hippuran을 사용하여 체외계측법에 의한 심박출량을 측정하여 다음과 같은 결론을 얻었다. 1) RIHSA를 사용한 심박출량의 측정치는 6750±866ml/min, 심계수의 측정치는 3960±476ml/min./㎡이었다. 2) 131I-Hippuran을 사용한 심박출량의 측정치는 5940±764ml/min, 심계수의 측정치는 3490±396ml/min./㎡이었다. 3) (131)^I-Hippuran에 의한 심박출량의 측정치는 RIHSA를 사용한 심박출량의 측정치의 88%로 나타났으며 양자간의 차이는 통계학적의미를 가지고 있었다(P$lt;0.05). 4) (131)^I-Hippuran을 사용하여 심박출량측정이 가능함을 알 수 있었다. Repeated measurement of cardiac output in the same 11 normal individuals were done with (131)^I-Hippuran and RIHSA. Following results were obtained. 1) The cardiac output measured with RIHSA was 6750±866ml/min. 2) The cardiac output measured with (131)^I-Hippuran was 5940±764ml/min. 3) The relative value of cardiac output measured with (131)^I-Hippuran to that measured with RIHSA was 88 percent, and a statistical significance was found present in the difference.
Anti-Obesity Effect of Auricularia spp.
Kun Hee Park,Kil-ja Kim,Kab Yeul Jang,Kimoon Park 한국버섯학회 2017 버섯 Vol.21 No.2
The purpose of this study is to find out a food material having anti-obesity effect and suggest the effect of the material to people who are interested in anti-obesity. For this study, Auricularia (wood ear) has been used. It is world widely spread mushroom, especially in east north Asia countries. It is also called as wood ear in western countries because of its shape. The most considerable fact is that Auricularia is being used for popular food materials for cooking because of its good taste. Totally 11 strains of Auricularia were offered by Doctor Kim, Kil-ja in Jeollanam do Agricultural Research & Extension Services. There were 8 strains of Auricula-polytricha, and 3 strains of Auricula-judae. Each Auricularia strains were extracted with 50% Ethanol for 12 hours in 40°C and then 11 strains were prepared for in vitro study. In vitro study focused on the inhibition effect on adipocyte differentiation of Auricularia spp. 3T3-L1 (preadipocyte cell) was used for identifying the inhibition effect on adipocyte differentiation. Before that, MTT assay was used for measurement of cell viability. The result is essential for fixing the treat concentration of the extracts. After adipocyte differentiation, cells were stained with Oil Red O solution to dye differentiated adipocyte cells. Spectrophotometer was used to quantify the adipocyte cells. There are few adipocyte differentiation markers. From the markers, this study selected four markers (PPAR γ, FABP4(ap2), CD36, C/EBPα) and used them to measure mRNA expression using real-time PCR and Western blot experiment. As a result, this study found out that all the extract of strains has inhibition effects on adipocyte differentiation, especially the adipocyte differentiation control probability of Auricula-polytricha strain 21001 was 24.6%. Auricula-judae strain 21002 (19.3%), Auricula-polytricha strain 249 (14.0%) followed. The result concerning the inhibition effect was identified through Western blot experiment as well. As a further study, in vivo study is on progressing. 56 ICR mice (6w, male) are being used for the animal study. It consists of 8 groups. One is control, another is positive control, the other groups are Auricula-polytricha strain 21001 treatment group. Different concentration of powder or extract of Auricularia is treated in each treatment group. We are anticipating that the result of this further study will be correspond to that of in vitro study.
Kil Joo Ban(Kil Joo Ban) 한국학술연구원 2023 Korea Observer Vol.54 No.1
Gray zone strategy garners growing attention as China's indirect approach against the U.S., her great power competitor. Unlike the conventional wisdom, the gray zone mechanism is not new historically but rather has been widely at play in many areas in the international arena, particularly in Northeast Asia. South Korea has been under the gray zone offensive of China and North Korea. Typical examples are Beijing's THAAD retaliation and Pyongyang's incrementally advancing nuclear program under a gray discourse of denuclearization of the Korean Peninsula. The examination provides insight into international implications: gray zone strategy as a transitional remedy, its availability to the strong, the different impacts of regime types, and the need for international attention to Pyongyang's gray zone approach towards nuclearization. This analysis also sheds some light on policies for South Korea, including an alliance policy and multilateral efforts.
Ontogeny of the locomotive behavior in a subsocial spider
Kil Won Kim,Soon Kil Ahn,Kyoung Hye Kim 한국응용곤충학회 2013 한국응용곤충학회 학술대회논문집 Vol.2013 No.10
Post-maternal social organisation of Amaurobius ferox (Araneae, Amaurobiidae) provides an opportunity to investigate the mechanisms of social behaviour in spiderlings while controlling for potential effects of maternal presence. Development and characteristics of locomotory behaviours in young individuals of the subsocial Amaurobius ferox were examined. Young collectively show a very rapid and linear locomotion in a short distance in response to an intruder in the natal nest. Such a locomotory behaviour of the spiderlings resembles the successive synchronised stepping towards prey of the permanently social spider, Anelosimus eximius. We observed the development of different types of locomotion relative to the age of young, collective tendency (i.e., proportion of individuals within the clutch engaging in the behaviour), and directional properties of the locomotion. Locomotory behaviours of spiderlings fell into two categories: ‘abrupt locomotion’ (AL), involving fast and linear movement over a short distance; and ‘ordinary locomotion’ (OL), involving slower movement over longer distances and times. The frequency of AL (abrupt locomotion) did not vary much throughout the days post-matriphagy, occurring for a limited period of time. On the other hand, the frequency of OL (ordinary locomotion) varied over the days post-matriphagy and increased during the maternal social period.