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Double-walled carbon nanotubes: synthesis, structural characterization, and application
Yoong Ahm Kim, Kap-Seung Yang, Hiroyuki Muramatsu, Takuya Hayashi, Morinobu Endo, Mauricio Terrones, Mildred S. Dresselhaus 한국탄소학회 Carbon Letters 12 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.2 4 77-88 (12 pages)
Double walled carbon nanotubes (DWCNTs) are considered an ideal model for studying the coupling interactions between different concentric shells in multi-walled CNTs. Due to their intrinsic coaxial structures they are mechanically, thermally, and structurally more stable than single walled CNTs. Geometrically, owing to the buffer-like function of the outer tubes in DWCNTs, the inner tubes exhibit exciting transport and optical properties that lend them promise in the fabrication of field-effect... -
Role of T-type Ca2＋ Channels in the Spontaneous Phasic Contraction of Pregnant Rat Uterine Smooth Muscle
Si-EunLee, Duck-SunAhn, Young-HoLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2009, Vol.13 No.3 15 241-249 (9 pages)
Although extracellular Ca2＋ entry through the voltage-dependent Ca2＋ channels plays an important role in the spontaneous phasic contractions of the pregnant rat myometrium, the role of the T-type Ca2＋ channels has yet to be fully identified. The aim of this study was to investigate the role of the T-type Ca2＋ channel in the spontaneous phasic contractions of the rat myometrium. Spontaneous phasic contractions and [Ca2＋]i were measured simultaneously in the longitudinal strips of female... -
Testosterone Relaxes Rabbit Seminal Vesicle by Calcium Channel Inhibition
JongKokKim, WooHaHan, MooYeolLee, SoonChulMyung, SaeChulKim, MinKyKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2008, Vol.12 No.2 6 73-78 (6 pages)
Recent studies have documented that testosterone relaxes several smooth muscles by modulating K+ channel activities. Smooth muscles of seminal vesicles play a fundamental role in ejaculation, which might involve testosterone. This study was aimed to assess the role of testosterone in seminal vesicular motility by studying its effects on contractile agents and on the ion channels of single vesicular myocytes in a rabbit model. The contractile responses of circular smooth muscle strips of rabbit... -
전기경련충격이 흰쥐 뇌의 Glutamine Synthetase의 활성도에 미치는 영향에 관한 연구
대한신경정신의학회 신경정신의학 1990, 제 29권 제 3호 9 601-615 (15 pages)
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Calcium Channel Blocking and Phosphodiesterase Inhibitory Action of GS386, a Dihydroisoquinoline Derivative, in Isolated Rat Trachea
장기철(Ki Churl Chang), 이회영(Hoi Young Lee), 강영진(Young Jin Kang), 구의본(Eui Bon Koo) 대한약리학회 대한약리학잡지 8 Pages
대한약리학회 대한약리학잡지 1996, 제 32권 제 3호 8 373-380 (8 pages)
Recently we reported that GS 386, 1-(4 -methoxybenzyl)-6,7-dimethoxy-3,4-dihydroisoquinoline, inhibited amplitude of the Ca2+ current by reducing the probability of Ca2+ channel opening without changing channel kinetics in isolated rabbit atrial myocyte. In the present study, further investigation of the mechanism of action of GS 386 was performed using isolated rat trachealis. GS 386 concentration-dependently relaxed rat trachealis contracted by carbachol (0.3μM) and high K+(65.4 mM) with IC50... -
n-Alkanols가 소의 대뇌피질로부터 분리한 Synaptosomal Plasma Membrane Vesicles의 측방확산운동 범위와 속도에 미치는 영향
정인교(In-Kyo Chung), 강정숙(Jung-Sook Kang), 윤일(Il Yun) 대한약리학회 대한약리학잡지 8 Pages
대한약리학회 대한약리학잡지 1993, 제 29권 제 1호 16 157-164 (8 pages)
n-Alkanols의 분자적 약리작용기전 탐구에 기초자료를 제공하기 위하여 소의 신선한 대뇌피질로부터 분리한 synaptosomal plasma membrane vesicles (SPMV) 지질 이중층의 측방확산운동에 미치는 n-alkanols의 영향을 형광 probe법으로 검색하였다. n-Alkanols는 SPMV 지질 이중층의 측방확산운동 범위와 속도를 농도 의존적으로 증가시켰고 1-nonanol까지는 탄소수가 두개 증가될 때마다 그 효력은 약 10배 가량 증가되었으나 탄소수 10개인 1-decanol의 효력은 오히려 감소되는 경향을 나타내었다. -
GS354, GS389: 새로운 칼슘 길항제
장기철(Ki Churl Chang), 손동렬(Dong-Ryul Sohn), 정원석(Won Seog Chong), 정수연(Soo Youn Chung), 이영수(Young Soo Lee), 김시환(Si Hwan Kim), 노홍기(Hong Kee 대한약리학회 대한약리학잡지 8 Pages
대한약리학회 대한약리학잡지 1991, 제 27권 제 1호 6 45-52 (8 pages)
GS354와 GS389의 세포내 칼슘{[Ca2+]1: Fura-2의 형광으로 측정}과 근장력 변화에 대하여 백서의 흉부동맥을 사용하여 검토하였다. GS354와 GS389 모두 고농도의 포타슘과 노어에피네프린에 의한 수축을 억제시켰다. GS354의 헐관이완은 [Ca2+]1의 감소가 동반되었고 고농도의 포타슘에 의한 [Ca2+]1증가억제 현상도 칼슘통로 활성제인 Bay K8644에 의하여 길항되었다. 그러나 혈관이완 작용은 Bay K8644에 의해 억제 되지 않았다. 이러한 사실은 GS354는 칼슘통로를 차단하여 [Ca2+]1을 감소시키며 또한 수축기구에 대한 칼슘의 감수성을... -
가토(家兎)에 있어서 전정반규관(前庭半規管)의 외안사근(外眼斜筋)에 관(對)한 흥분적(興奮的) 작용(作用)에 관(關)한 연구(硏究)
김재협(Kim, Jeh-Hyub), 박병림(Park, Byung-Rim), 길원식(Gill, Won-Sik) 대한생리학회 대한생리학회지 10 Pages
대한생리학회 대한생리학회지 1982, 제 16권 제 1호 4 31-40 (10 pages)
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미로반규관(迷路半規管)과 외안근(外眼筋)의 기능적(機能的) 관계(關係)에 관(關)한 연구(硏究)
김재협(Kim, Jeh-Hyub) 대한생리학회 대한생리학회지 18 Pages
대한생리학회 대한생리학회지 1974, 제 8권 제 2호 1 1-18 (18 pages)
미로(迷路) 각반규관(各半規管)과 각외안근간(各外眼筋間)의 기능적(機能的) 관계(關係)를 구명(究明)하여 미로반사성(迷路反射性) 안구운동(眼球運動)을 위한 신경기구(神經機構)를 이해하고져 마취가토(麻醉家兎)에서 골성(骨性) 반규관(半規管) 팽대부내(膨大部內)에 단전극(單電極)을 삽입하여 각(各) 팽대부신경(膨大部神經)을 전기자극(電氣刺戟)하였을 때 양안(兩眼)의 각(各) 외안근(外眼筋)의 반응(反應)을 등장성장력변화(等長性張力變化)와 근전도(筋電圖)로써 관찰하여 다음과 같은 결론(結論)을 얻었다. 1) 일측(一側)... -
체성신경계(體性神經系)의 기계적(機械的) 생리학(生理學)- 기계적전달(機械的傳達)과 체성신경원(體性神經元)의 초발국소흥분(初發雇所興奮) -
곽재희(Kwak, Je-Hi) 대한생리학회 대한생리학회지 16 Pages
대한생리학회 대한생리학회지 1967, 제 1권 제 1호 1 7-22 (16 pages)
인간(人間)의 감각(感覺), 운동(運動), 사고등(思考等)에 직접관여(直接關與)하는 체성신경원(體性神經元)이 인체내(人體內)에 있어서 단일세포동물(單一細胞動物)과 비체성신경원(非體性神經元)과 같이 각종(各種)의 자극(刺戟)에 직접응(直接應)하므로써 기능적(機能的) 활동(活動)을 개시(開始)한다는 한연(漢然)한 예상하(豫想下)에서 말초(末梢)에서는 혹종(或種)의 통소(痛素)를, 중추(中樞)에서는 어떤 묘(妙)한 화학적(化學約)인 흥분전달물질(興奮傳達物質)을 탐구(探求)하고 있으며 말초(末梢)의 통흥분시발(痛興奮始發)과... -
Carbon rich fly ash and their nanostructures
Numan Salah, Sami S. Habib, Zishan H. Khan, Ahmed Alshahrie, Adnan Memic, Attieh A. Al-ghamdi 한국탄소학회 Carbon Letters 9 Pages
한국탄소학회 Carbon Letters 2016, Vol.19 3 23-31 (9 pages)
precursor and catalyst for carbon nanotube growth. This fly ash powder is mostly composed of pure carbon, predominantly present as sp2. In this work, the effect of sonication time on the morphology and structural properties of carbon rich fly ash particles is reported. The obtained results show that ultrasound treatment is an effective tool for producing ultrafine particles/fragments with higher porosity, which might be suitable for the adsorption of gasses. Moreover, carbon nanoparticles (CNPs)... -
Molecular approach to hexagonal and cubic diamond nanocrystals
Mudar Ahmed Abdulsattar 한국탄소학회 Carbon Letters 6 Pages
한국탄소학회 Carbon Letters 2015, Vol.16 No.3 5 192-197 (6 pages)
In the present work, we propose a molecule (C14H14) that can be used as a building block of hexagonal diamond-type crystals and nanocrystals, including wurtzite structures. This molecule and its combined blocks are similar to diamondoid molecules that are used as building blocks of cubic diamond crystals and nanocrystals. The hexagonal part of this molecule is included in the C12 central part of this molecule. This part can be repeated to increase the ratio of hexagonal to cubic diamond and... -
Carbon-allotropes: synthesis methods, applications and future perspectives
P. S. Karthik, A. L. Himaja and Surya Prakash Singh 한국탄소학회 Carbon Letters 19 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.4 1 219-237 (19 pages)
The element carbon has been used as a source of energy for the past few hundred years, and now in this era of technology, carbon has played a significant and very prominent role in almost all fields of science and technology. So as an honour to this marvellous element, we humans should know about its various forms of existence. In this review article, we shed light on all possible carbon-allotropes; similarities in their synthesis techniques and the starting materials; their wide range of... -
Carbon nanomaterials in organic photovoltaic cells
TaehoonKim, SeungJaeYang, ChongRaePark 한국탄소학회 Carbon Letters 13 Pages
한국탄소학회 Carbon Letters 2011, Vol.12 No.4 2 194-206 (13 pages)
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난류 경계층 내 벽면 변동 압력의 구조 기진력 모델링
홍진숙, 신구균, 김상윤 한국소음진동공학회 소음진동 8 Pages
한국소음진동공학회 소음진동 2001, Vol.11 No.2 226-233 (8 pages)
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Relaxant and anti-inflammatory effect of two thalidomide analogs as PDE-4 inhibitors in pregnant rat uterus
V?ctor Manuel Mu?oz-P?rez, Eduardo Fern?ndez-Mart?nez*, H?ctor Ponce-Monter, and Mario I. Ortiz 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2017, Vol.21 No.4 9 429-437 (9 pages)
The aim of this study was to evaluate the relaxant and anti-inflammatory effects of two thalidomide analogs as phosphodiesterase-4 (PDE-4) inhibitors in pregnant rat uterus. Uteri from Wistar female rats were isolated at 19 day of pregnancy. Uterine samples were used in functional studies to evaluate the inhibitory effects of the thalidomide analogs, methyl 3-(4-nitrophthalimido)-3-(3,4-dimethoxyphenyl)-propanoate (4NO2PDPMe) and methyl 3-(4-aminophthalimido)-3-(3,4-dimethoxyphenyl)-propanoate... -
The Critical Roles of Zinc: Beyond Impact on Myocardial Signaling
SungRyulLee, SuJinNoh, JuliusRyanPronto, YuJeongJeong, HyoungKyuKim, InSungSong, ZhelongXu, HyogYoungKwon, SeChanKang, Eun-HwaSohn, KyungS 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 12 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2015, Vol.19 No.5 1 389-400 (12 pages)
Zinc has been considered as a vital constituent of proteins, including enzymes. Mobile reactive zinc (Zn2+) is the key form of zinc involved in signal transductions, which are mainly driven by its binding to proteins or the release of zinc from proteins, possibly via a redox switch. There has been growing evidence of zinc’s critical role in cell signaling, due to its flexible coordination geometry and rapid shifts in protein conformation to perform biological reactions. The importance and... -
Mechanisms of Motility Change on Trinitrobenzenesulfonic Acid- Induced Colonic Inflammation in Mice
GabJinCheon, YuanCui, Dong-SooYeon, Seong-ChunKwon, Byong-GonPark 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2012, Vol.16 No.6 10 437-446 (10 pages)
Ulcerative colitis is an inflammatory bowel disease (IBD) characterized by recurrent episodes of colonic inflammation and tissue degeneration in human or animal models. The contractile force generated by the smooth muscle is significantly attenuated, resulting in altered motility leading to diarrhea or constipation in IBD. The aim of this study is to clarify the altered contractility of circular and longitudinal smooth muscle layers in proximal colon of trinitrobenzen sulfonic acid... -
MLCK and PKC Involvements via Gi and Rho A Protein in Contraction by the Electrical Field Stimulation in Feline Esophageal Smooth Muscle
SunYoungPark, JaeHoShim, MinaKim, YihHsiuSun, HyunSooKwak, XiangmeiYan, Byung-ChulChoi, ChaeukIm, SangSooSim, JiHoonJeong, InKyeomKim, Youn 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2010, Vol.14 No.1 5 29-35 (7 pages)
an isometric force transducer. On-contraction occurred in the presence of NG-nitro-L-arginine methyl ester (L-NAME), suggesting that nitric oxide acts as an inhibitory mediator in smooth muscle. The excitatory composition of both contractions was cholinergic dependent which was blocked by tetrodotoxin or atropine. The on-contraction was abolished in Ca2＋-free buffer but reappeared in normal Ca2＋- containing buffer indicating that the contraction was Ca2＋ dependent. 4-aminopyridine (4-AP),... -
적출 가토 심장에 있어서 수축빈도-수축력 상관관계에 대한 Higenamine의 강심 효과
장기철(Ki Churl Chang) 대한약리학회 대한약리학잡지 8 Pages
대한약리학회 대한약리학잡지 1983, 제 19권 제 2호 2 9-16 (8 pages)
현재 사용되고 있는 강심제로는 디지탈리스 배당체가 유일한 약물이지란 그 안전역이 대단히 좁아서 보다 안전한 강심제의 개발이 요구되고 있다. 최근 강심작용이 현저할 뿐 아니라 안전역이 비교적 넓을 것으로 인정되는 higenamine이 개발되어 그 작용기전을 밝히려는 시도가 많이 있었다. 본 연구에서는 higenamine의 강심작용 기전을 규명하기 위한 연구의 일환으로 수축빈도-수축력 상관관계(interval-strength relationship)에 있어서 1) Rested-state수축력 2) Positive inotropic effect of activation(PIEA) 3) Negative... -
Properties of Single K+ Channels of Skeletal Muscle Incorporated into Planar Lipid Bilayer
Park, Jin-Bong, Kim, Hee-Jeong, Cho, Myung-Haing, Lee, Hang, Park, Hong-Ki, Lee, Mun-Han, Ryu, Pan-Dong 대한생리학회 대한생리학회지 16 Pages
대한생리학회 대한생리학회지 1995, 제 29권 제 1호 2 13-28 (16 pages)
single K+ channels of skeletal muscle from the rat and frog were into planar lipid bilayers and their properties were studied. Fusion was induced by an osmotic gradient. Of the four types of K+ channels recorded, the two most frequently observed were a voltage and Ca2+-activated K+ channel and a K+ channel with a prominent conductance substate. The first K+ channel was identified as the large Ca2+-activated K+ (BK) channel because the open-state probability was increased with depolarization... -
Study on lowering the percolation threshold of carbon nanotube-filled conductive polypropylene composites
Seung Bin Park, Moo Sung Lee, Min Park 한국탄소학회 Carbon Letters 8 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.2 8 117-124 (8 pages)
Conductive polymer composites (CPCs) consist of a polymeric matrix and a conductive filler, for example, carbon black, carbon fibers, graphite or carbon nanotubes (CNTs). The critical amount of the electrically conductive filler necessary to build up a continuous conductive network, and accordingly, to make the material conductive; is referred to as the percolation threshold. From technical and economical viewpoints, it is desirable to decrease the conductive- filler percolation-threshold as...
