http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
A Basic Study on Leaf and Stem Production of Angelica acutiloba
Choi,Seong-Kyu,Yun,Kyeong-won,Chon,Sang-Uk,Lee,Jong-Ill,Seo,Young-Nam,Seo,Kyoung-Sun,Choi,Kyeong-Ju 한국자원식물학회 2004 Plant Resources Vol.7 No.3
This study was conducted to develop effective production system in greenhouse for leaves and stems of Angelica acutiloba by using connect pots in 2003 and 2004. Seed germination rate and plant biomass of Angelica acutiloba collected in 2004 were higher than those harvested in 2003. Germination rate of Angelica acutiloba seeds collected in 2003 was 10%, while germination rate of seeds collected in 2004 was above 90%. Especially, plant growth and yield of Angelica acutiloba grown in connect pots sized with 4×4×5cm(length×width×height) were the highest. These results indicate that leaf and stem production of Angelica acutiloba can be improved by using connect pots and optimizing seed collecting time in greenhouse.
Choi, Ji Na,Choi, Yun-Hyeok,Lee, Jeong-Min,Noh, Ill Chan,Park, Jae Won,Choi, Wahn Soo,Choi, Jung Ho Taylor Francis Health Sciences 2012 NATURAL PRODUCT RESEARCH Vol.26 No.24
<P>Trachelospermum jasminoides (Apocynaceae) has pharmacological effects that include anti-inflammatory, anti-bacterial and anti-viral activities, which have been observed from various studies. Of these pharmacological effects, the anti-inflammatory capacity of compounds from T. jasminoides is not yet known exactly. In this study, we investigated the compound that can be used for the suppression of lipopolysacchaide (LPS) stimulated inflammatory responses in macrophages among the five isolated compounds. β-sitosterol-β-D-glucoside (1) was found to reduce nitric oxide (NO) production from LPS-induced RAW 264.7 cells the most. In addition, compound 1 strongly inhibited the interleukin 6 (IL-6) activities of stimulated macrophages. Treatment of RAW 264.7 cells with compound 1 reduced secretion of inflammatory elements including tumour necrosis factor - alpha (TNF-α) and interleukin 1 beta (IL-1β). Thus, compound 1 may be a useful candidate for the development of new drugs to treat endotoxemia and inflammation accompanied by the overproduction of NO.</P>
Choi, Yun-Hyeok,Yoo, Hee-Jung,Noh, Ill Chan,Lee, Jeong-Min,Park, Jae Won,Choi, Wahn Soo,Choi, Jung Ho 대한약학회 2012 Archives of Pharmacal Research Vol.35 No.5
The inhibition of Interleukin-1beta (IL-$1{\beta}$) is of substantial interest for the treatment of rheumatoid arthritis. Using an in vitro assay with RAW 264.7 cells, oxo-acetic acid 2-ethoxy-4-(3-hydroxy-2-oxopropyl) phenyl ester (1) was isolated from the roots of Paeonia suffruticosa Andrews as an inhibitor of IL-$1{\beta}$ with an $IC_{50}$ value of 56 ${\mu}M$. Compound 1 is a novel phenylesteric compound from P. suffruticosa Andrews. Compound 1 was shown to inhibit the production of pro-inflammatory cytokines in RAW 264.7 cells. Thus, a possible new action of novel compound is provided explaining the anti-rheumatoid arthritic properties of P. suffruticosa Andrews.
Electrical Properties of Lead-free Bi3.25La0.75(Ti1-xVx)3O12 Ceramics
Chang Won Ahn,Ill Won Kim,Byung Moon Jin,Hai Joon Lee,Jae Shin Lee,Jin Soo Kim,Mun Seok Choi,Sung Young Lee 한국물리학회 2005 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.46 No.1
Vanadium-doped bismuth lanthanum titanate lead-free Bi3:25La0:75(TixVx)3O12 (x = 0 0.10;BLTV-x) ceramics have been fabricated by using a solid-state reaction method. BLTV-0.01 ceramics exhibit a relatively high electromechanical coupling factor (kt = 20.2 %) and high remnant polarization (Pr = 11.7 C/cm2). Vanadium substitution for titanium-ion site can eectively enhance the resistivity by one order of magnitude(1.74 1011cm). A small amount of vanadium substitution for titanium site on BLT can signicantly reduce the space charge density and the in uence of domain pinning, which would be responsible for the improvement in the ferroelectricity and piezoelectricity.
A Brief Review on Relaxor Ferroelectrics and Selected Issues in Lead-Free Relaxors
Chang Won Ahn,Chang-Hyo Hong,Byung-Yul Choi,Hwang-Pill Kim,Hyoung-Su Han,황영훈,Wook Jo,Ke Wang,Jing-Feng Li,Jae-Shin Lee,Ill Won Kim 한국물리학회 2016 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.68 No.12
Relaxor ferroelectricity is one of the most widely investigated but the least understood material classes in the condensed matter physics. This is largely due to the lack of experimental tools that decisively confirm the existing theoretical models. In spite of the diversity in the models, they share the core idea that the observed features in relaxors are closely related to localized chemical heterogeneity. Given this, this review attempts to overview the existing models of importance chronologically, from the diffuse phase transition model to the random-field model and to show how the core idea has been reflected in them to better shape our insight into the nature of relaxor-related phenomena. Then, the discussion will be directed to how the models of a common consensus, developed with the so-called canonical relaxors such as Pb(Mg1/3Nb2/3)O3 (PMN) and (Pb, La)(Zr, Ti)O3 (PLZT), are compatible with phenomenological explanations for the recently identified relaxors such as (Bi1/2Na1/2)TiO3 (BNT)-based lead-free ferroelectrics. This review will be finalized with a discussion on the theoretical aspects of recently introduced 0−3 and 2−2 ferroelectric/relaxor composites as a practical tool for strain engineering.
채일현(Ill Hyoun Chae),김명찬(Myoung Chan Kim),신세원(Se Won Shin),이성림(Seong Lim Lee),김인선(In Sun Kim),김인배(In Bae Kim),조봉춘(Bong Choon Jo),최인철(In Cheol Choi),박종각(Jong Gak Park) 대한산부인과학회 1999 Obstetrics & Gynecology Science Vol.42 No.8
Holoprosencephaly is a rare malformation complex or development defect including different degrees of incomplete cleavages of the embryonic prosencephalon and varying degrees of the midface defects, resulting from the defect of prechordal mesoderm, migrating forward into the area anterior to the notochord during the third week of fetal development. Early antenatal diagnosis of holoprosencephaly is important to find out its severity, to predict its prognosis, and to determine proper management according to its prognosis and severity. The possibility of early antenatal diagnosis of holoprosencephaly by ultrasound has been suggested, but occasionally missed and rarely confirmed. We present one case of lobar holoprosencephaly, diagnosed postnatally and one case of alobar holoprosencephaly, diagnosed antenatally in our hospitals.
김일한(Ill Han Kim),최창익(Chang Ik Choi),오갑영(Gab Young Oh),최현일(Hyun Il Choi),한상원(Sang Won Han),양석우(Seok Woo Yang),정순희(Soon Hee Jung) 대한산부인과학회 1999 Obstetrics & Gynecology Science Vol.42 No.9
A pelvic mass in women may be gynecologic in origin or it may arise from the urinary tract or bowel. Nonovarian or nongynecologic conditions may be confused with uterine or ovarian mass. The rare congenital megaureter should always be kept in mind as a possible cause of a pelvic mass. Congenital megaureter showed various clinicopathological features and frequently associated with ipsilateral or controlateral upper tract anomalies. Early meticulous imaging surgical correction will lead to excellent result. We experienced a rare case of blind ending megaureter which was suspected adnexal tumor in twenty seven-year-old woman. Here we present the case with brief review of literatures.