자료유형
발행기관
- 대한생리학회-대한약리학회(16)
- 대한수의학회(9)
- 한국탄소학회(6)
- 대한기계학회(5)
- 대한생리학회(5)
- 대한약리학회(4)
- 한국식물병리학회(3)
- 한국정밀공학회(2)
- 한국열환경공학회(1)
간행물
- THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY(16)
- JOURNAL OF VETERINARY SCIENCE(9)
- CARBON LETTERS(6)
- 대한생리학회지(5)
- 대한약리학잡지(4)
- THE PLANT PATHOLOGY JOURNAL (3)
- 대한기계학회론문집. TRANSACTIONS OF THE KOREAN SOCIETY OF MECHANICAL ENGINEERS. A. A(3)
- 한국정밀공학회지(2)
- JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY(1)
- 대한기계학회논문집(1)
- 열환경공학(1)
전체 선택해제
총 51건 검색
본문검색 결과만 보기
-
Cloned foal derived from in vivo matured horse oocytes aspirated by the short disposable needle system
Wonyou Lee, Kilyoung Song, Inhyung Lee, Hyungdo Shin, Byeong Chun Lee, Seongchan Yeon, Goo Jang 대한수의학회 Journal of Veterinary Science 8 Pages
대한수의학회 Journal of Veterinary Science 2015, 제 16권 제 4호 15 509-516 (8 pages)
Transvaginal ultrasound-guided follicle aspiration is one method of obtaining recipient oocytes for equine somatic cell nuclear transfer (SCNT). This study was conducted: (1) to evaluate the possibility of oocyte aspiration from pre-ovulatory follicles using a short disposable needle system (14-G) by comparing the oocyte recovery rate with that of a long double lumen needle (12-G); (2) to investigate the developmental competence of recovered oocytes after SCNT and embryo transfer. The recovery... -
Betulinic acid prevents alcohol-induced liver damage by improving the antioxidant system in mice
Jine Yi*, Wei Xia, Jianping Wu, Liyun Yuan, Jing Wu, Di Tu, Jun Fang, Zhuliang Tan* 대한수의학회 Journal of Veterinary Science 8 Pages
대한수의학회 Journal of Veterinary Science 2014, 제 15권 제 1호 16 141-148 (8 pages)
Betulinic acid (BA), a pentacyclic lupane-type triterpene, has a wide range of bioactivities. The main objective of this work was to evaluate the hepatoprotective activity of BA and the potential mechanism underlying the ability of this compound to prevent liver damage induced by alcohol in vivo. Mice were given oral doses of BA (0.25, 0.5, and 1.0 mg/kg) daily for 14 days, and induced liver injury by feeding 50% alcohol orally at the dosage of 10 ml/kg after 1 h last administration of BA. BA... -
Quercetin improves the in vitro development of porcine oocytes by decreasing reactive oxygen species levels
Jung-Taek Kang, Dae-Kee Kwon, Sol-Ji Park, Su-Jin Kim, Joon-Ho Moon, Ok-Jae Koo, Goo Jang, Byeong-Chun Lee* 대한수의학회 Journal of Veterinary Science 6 Pages
대한수의학회 Journal of Veterinary Science 2013, 제 14권 제 1호 3 15-20 (6 pages)
Quercetin is a plant-derived flavonoid found in fruits or vegetables that has antioxidant properties and acts as a free radical scavenger. We investigated the effects of quercetin on porcine oocyte nuclear maturation and embryonic development after parthenogenetic activation. We then evaluated the antioxidant activities of quercetin by measuring reactive oxygen species (ROS) levels in matured oocytes. Immature oocytes were untreated or treated with 1, 10, and 50 ug/mL quercetin during in vitro... -
Influence of nitric oxide on in vitro growth, survival, steroidogenesis, and apoptosis of follicle stimulating hormone stimulated buffalo (Bubalus bubalis) preantral follicles
Pawan K. Dubey, Vrajesh Tripathi, Ram Pratap Singh, G. Taru Sharma* 대한수의학회 Journal of Veterinary Science 9 Pages
대한수의학회 Journal of Veterinary Science 2011, 제 12권 제 3호 9 257-265 (9 pages)
Effect of sodium nitroprusside (SNP), a nitric oxide (NO) donor, on in vitro survival, growth, steroidogenesis, and apoptosis of buffalo preantral follicles (PFs) was investigated. PFs (200∼250 mm) were isolated by micro-dissection and cultured in 0 (control), 10, 10, 10, and 10 M SNP. To examine the reversible effect of SNP, PFs were cultured with 10 M SNP ＋ 1 mM N-nitro-L-arginine methyl ester (L-NAME) or 1.0 mg hemoglobin (Hb). The results showed that greater concentrations of SNP (10,... -
Dynamic analysis of Ca level during bovine oocytes maturation and early embryonic development
Su Li Liang, Qian Jun Zhao, Xiang Chen Li, Ya Ping Jin, Yi Peng Wang, Xiao Hua Su, Wei Jun Guan, Yue Hui Ma 대한수의학회 Journal of Veterinary Science 10 Pages
대한수의학회 Journal of Veterinary Science 2011, 제 12권 제 2호 5 133-142 (10 pages)
Mammalian oocyte maturation and early embryo development processes are Ca-dependent. In this study, we used confocal microscopy to investigate the distribution pattern of Ca and its dynamic changes in the processes of bovine oocytes maturation, in vitro fertilization (IVF), parthenogenetic activation (PA) and somatic cell nuclear transfer (SCNT) embryo development. During the germinal vesicle (GV) and GV breakdown stage, Ca was distributed in the cortical ooplasm and throughout the oocytes from... -
In vitro maturation and fertilization of prepubertal and pubertal black Bengal goat oocytes
Momena Khatun, Mohammad Musharraf Uddin Bhuiyan, Jalal Uddin Ahmed, Aminul Haque, Mohammad Bozlur Rahman*, Mohammed Shamsuddin 대한수의학회 Journal of Veterinary Science 8 Pages
대한수의학회 Journal of Veterinary Science 2011, 제 12권 제 1호 11 75-82 (8 pages)
Oocytes retrieval, in vitro maturation (IVM) and fertilization (IVF) efficiency are inevitable steps towards in vitro production of embryos. In the present study, these parameters were investigated in the ovaries of prepubertal (n = 31) and pubertal (n = 61) black Bengal goats obtained from a slaughterhouse. Nuclear maturation was evaluated upon aspiration and following IVM in TCM-199 (Earle's salt with L-glutamine and sodium bicarbonate) for 27 h at 39C under 5% CO2 in humidified air. The... -
Microtubule distribution in somatic cell nuclear transfer bovine embryos following control of nuclear remodeling type
Dae-Jin Kwon, Yu-Mi Lee, In-Sun Hwang, Choon-Keun Park, Boo-Keun Yang, Hee-Tae Cheong 대한수의학회 Journal of Veterinary Science 9 Pages
대한수의학회 Journal of Veterinary Science 2010, 제 11권 제 2호 1 93-101 (9 pages)
This study was conducted to evaluate the microtubule distribution following control of nuclear remodeling by treatment of bovine somatic cell nuclear transfer (SCNT) embryos with caffeine or roscovitine. Bovine somatic cells were fused to enucleated oocytes treated with either 5 mM caffeine or 150 mM roscovitine to control the type of nuclear remodeling. The proportion of embryos that underwent premature chromosome condensation (PCC) was increased by caffeine treatment but was reduced by... -
Effect of IP3 and ryanodine treatments on the development of bovine parthenogenetic and reconstructed embryos
Gook-jun Ahn, Byeong-chun Lee, Woo-suk Hwang 대한수의학회 Journal of Veterinary Science 7 Pages
대한수의학회 Journal of Veterinary Science 2001, 제 2권 제 2호 11 131-137 (7 pages)
of the electroporation experiment. For electroporation, cleavage rates were significantly higher in the IP3+ryanodine group than in the IP3 or control group (85.6% vs 73.7% or 67.6%, respectively). In the subsequent stages of embryonic development, such as morula and blastocyst formation, the IP3 and ryanodine group exhibited significantly higher rates of morula fomation than the IP3 or control groups (40.6% vs 24.2% or 16.7%, respectively). Similarly, the rate of blastocyst formation in the... -
Hydrogen peroxide attenuates refilling of intracellular calcium store in mouse pancreatic acinar cells
MiNaYoon, DongKwanKim, SeHoonKim, HyungSeoPark 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2017, Vol.21 No.2 11 233-239 (7 pages)
or Ca2+ extrusion through plasma membrane. Additionally, ruthenium red, a mitochondrial Ca2+ uniporter blocker, failed to attenuate H2O2-induced intracellular Ca2+ elevation. These results provide evidence that excessive generation of H2O2 in pathological conditions could accumulate intracellular Ca2+ by attenuating refilling of internal Ca2+ stores rather than by inhibiting Ca2+ extrusion to extracellular fluid or enhancing Ca2+ mobilization from extracellular medium in mouse pancreatic acinar... -
The Inhibitory Mechanism of Gentamicin on Electrical Field Stimulation Response in Rat Bladder Smooth Muscle
ChangHoMin, YiYiWang, JinhyungBae, JungHoonHan, UyDongSohn 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2015, Vol.19 No.5 11 473-478 (6 pages)
To see the inhibitory mechanism of gentamicin in response to electrical field stimulation (EFS) using the rat bladder smooth muscle, atropine or guanethidine was treated but had no effect. Methylsergide, a non-selective 5-HT1, 5-HT2 receptor antagonist was also treated but had on effect. Kinase inhibitors, such as chelerythrine (PKC inhibitor), ML-9 (MLCK inhibitor), or Y27632 (rho kinase inhibitor) were pretreated before gentamicin treatment, but did not have effect. For U73122, a phospholipase... -
Functional Characterization of ABCB4 Mutations Found in Low Phospholipid-Associated Cholelithiasis (LPAC)
TaeHeeKim, HyoJinPark, JiHaChoi 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2013, Vol.17 No.6 8 525-530 (6 pages)
Multidrug resistance 3 (MDR3) is expressed on the canalicular membrane of the hepatocytes and plays an important role in protecting the liver from bile acids. Altered ABCB4 gene expression can lead to a rare hepatic disease, low phospholipid-associated cholelithiasis (LPAC). In this study, we characterized 3 ABCB4 mutations in LPAC patients using various in vitro assay systems. We first measured the ability of each mutant to transport paclitaxel and then the mechanisms by which these mutations... -
Na+-Ca2+ Exchange Curtails Ca2+ before Its Diffusion to Global Ca2+i in the Rat Ventricular Myocyte
Sung-WanAhnChangMannKo 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2005, Vol.9 No.2 4 95-102 (8 pages)
In the heart, Na-Ca2 exchange (NCX) is the major Ca2 extrusion mechanism. NCX has been considered as a relaxation mechanism, as it reduces global [Ca2]i raised during activation. However, if NCX locates in the close proximity to the ryanodine receptor, then NCX would curtail Ca2 before its diffusion to global Ca2i. This will result in a global [Ca2]i decrease especially during its ascending phase rather than descending phase. Therefore, NCX would... -
Heterogeneity of the SR-dependent Inward Na+-Ca2+ Exchange Current in the Heavily Ca2+-buffered Rat Ventricular Myocytes
Kyung-BongYoon, Sung-WanAhn, ChangMannKo 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2004, Vol.8 No.2 6 101-110 (10 pages)
Voltage-sensitive release mechanism was pharmacologically dissected from the Ca2-induced Ca2 release in the SR Ca2 release in the rat ventricular myocytes patch-clamped in a whole-cell mode. SR Ca2 release process was monitored by using forward-mode Na-Ca2 exchange after restriction of the interactions between Ca2 from SR and Na-Ca2 exchange within micro-domains with heavy cytosolic Ca2 buffering with 10 mM BAPTA. During... -
Effects of Dopamine on Intracellular pH in Opossum Kidney Cells
KyungWooKang, YungKyuKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 5 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2003, Vol.7 No.3 11 187-191 (5 pages)
Na/H exchanger (NHE) has a critical role in regulation of intracellular pH (pHi) in the renal proximal tubular cells. It has recently been shown that dopamine inhibits NHE in the renal proximal tubules. Nevertheless, there is a dearth of information on the effects of long-term (chronic) dopamine treatment on NHE activities. This study was performed to elucidate the pHi regulatory mechanisms during the chronic dopamine treatments in renal proximal tubular OK cells. The resting pHi... -
Forward-Mode Na+-Ca2+ Exchange during Depolarization in the Rat Ventricular Myocytes with High EGTA
Eun-GiKim, ChangMannKo 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2001, Vol.5 No.6 5 487-494 (8 pages)
During depolarization, extrusion of Ca2 from sarcoplasmic reticulum through forward-mode Na-Ca2 exchange was studied in the rat ventricular myocytes patch-clamped in whole-cell configuration. In order to confine the Ca2 responses in a micro-domain by limiting the Ca2 diffusion time, rat ventricular myocytes were dialyzed with high (14 mM) EGTA. K current was suppressed by substituting KCl with 105 mM CsCl and 20 mM TEA in the pipette filling solution and... -
Comparison of the Determinants in the Differences in Force- Frequency Relationships between Rat and Rabbit Left Atria
ChangMannKoSoon-JinKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2000, Vol.4 No.5 11 417-425 (9 pages)
The underlying mechanism commonly applicable for both the positive and negative force-frequency relationships (FFR) was pursued in left atria (LA) of rat and rabbit. The species differences in the roles of Na/Ca2 exchanger and sarcoplasmic reticulum (SR), which are major intracellular Ca2 regulatory mechanisms in the heart, were examined in the amplitude accommodation to the frequency that changed from 3 Hz to the variable test frequencies for 5 minutes in the electrically... -
Relatoinship between Sarcoplasmic Reticular Calcium Release and Na+-Ca2+ Exchange in the Rat Myocardial Contraction
Eun-GiKim, SoonJinKim, ChangMannKo 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 14 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2000, Vol.4 No.3 4 197-210 (14 pages)
Suppressive role of Na-Ca2 exchange in myocardial tension generation was examined in the negative frequency-force relationship (FFR) of electric field stimulated left atria (LA) from postnatal developing rat heart and in the whole-cell clamped adult rat ventricular myocytes with high concentration of intracellular Ca2 buffer (14 mM EGTA). LA twitch amplitudes, which were suppressed by cyclopiazonic acid in a postnatal age-dependent manner, elicited frequency-dependent and... -
Regulation of Magnesium Release by cAMP during Chemical Hypoxia in the Rat Heart and Isolated Ventricular Myocytes
JinShangKimAntonioScarpa 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1999, Vol.3 No.1 8 59-68 (10 pages)
Mg2 extrusion following hormonal stimulation. To determine the relation between Mg2 efflux and cellular energy state in a hypoxic rat heart and isolated myocytes, [Mg2]i, ATP and Mg2 content were measured by using mag-fura-2, luciferin-luciferase and atomic absorbance spectrophotometry. Mg2 effluxes were stimulated by norepinephrine (NE) or cAMP analogues, respectively. Mg2 effluxes induced by NE or cAMP were more stimulated in the presence of metabolic... -
Effects of Histamine H2-Receptor Stimulation on Mg2+ Efflux in Perfused Guinea Pig Heart
Hyung-SubKang, Sung-EunChang, Chang-WonKang, Soo-WanChae, Jin-SangKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1998, Vol.2 No.1 6 49-54 (6 pages)
-
Mechanism of Catecholamine Secretion Evoked by Lithium from the Isolated Perfused Rat Adrenal Gland
임동윤(Dong-Yoon Lim), 김철(Cheol Kim), 오형근(Hyeong-Geun Oh) 대한약리학회 대한약리학잡지 16 Pages
대한약리학회 대한약리학잡지 1996, 제 32권 제 3호 7 357-372 (16 pages)
Lithium (Li) is known to be used not only during acute manic psychosis but also acute depressive phase in manic-depression. In the present study, it was attempted to investigate the effect of lithium on catecholamine (CA) secretion from the isolated perfused rat adrenal gland and to clarify the mechanism of its action. Replacement of Na+ (118.4 mM) by lithium in the normal Krebs-bicarbonate solution used to perfuse the gland produced gradually an increased response in the spontaneous... -
심근 수축에 있어서 Calcium 이온의 기원에 관한 약리학적 연구
고창만(Chang Mann Ko), 김경환(Kyung Hwan Kim) 대한약리학회 대한약리학잡지 8 Pages
대한약리학회 대한약리학잡지 1994, 제 30권 제 1호 8 67-74 (8 pages)
Na-Ca 교환은 calcium 이온을, 세포 내외의 Na 이온 농도차에 의해서 형성되는 원동력의 방향에 따라, 세포내로(역방향 Na-Ca 교환), 혹은 세포밖으로(정방향 Na-Ca 교환) 이동시킨다. 그러므로 Na-Ca 교환은 심근 수축 운동의 조절 기전의 하나로 받아 들여지고 있다. 그러나, 세포내의 Na 이온 농도는 항상 세포외의 농도보다 낮으므로, 역방향 Na-Ca 교환의 존재와 아울러 이의 심근 수축에 있어서의 역할 가능성에 대해 많은 연구자들이 회의를 가지고 있는 것이 사실이다. 그러므로 본 연구는 흰쥐의 좌심방을 이용하여, 역방향... -
흰쥐 원위세뇨관과 피질집합관의 산소소비량에 대한 Bradykinin의 영향
이석용(Seok-Yong Lee), 조규철(Kyu-Chul Cho) 대한약리학회 대한약리학잡지 6 Pages
대한약리학회 대한약리학잡지 1990, 제 26권 제 2호 8 161-166 (6 pages)
Kallikrein-kinin계는 신장의 혈류역학과 수분 및 전해질 배설의 조절자로서 역할을 하는 것으로 알려져 있다. Kallikrein-kinin계의 유효한 펩타이드중 하나인 bradykinin(BK)을 신동맥에 주입시 전해질 배설이 증가하는데 이 작용이 신혈류역학적 변동에 기인하는지 또는 신세뇨관의 전해질 운반에 대한 직접적인 작용에 기인하는지 아직 확실치 않다. 따라서 본 연구에서는 원위세뇨관(DT)과 피질집합관(CCT)에서의 전해질운반 의존성 산소소비에 대한 BK의 영향을 관찰하였다. BK(0.1μM)은 DT과 CCT의 산소소비를 유의하게... -
적출관류 토끼 신장기능에서 칼슘의 역할
이권행(Kweon-Haeng Lee), 전은의(Eun-Eui Chun), 홍경자(Kyoung-Ja Hong), 조규철(Kyu-Chul Cho) 대한약리학회 대한약리학잡지 9 Pages
대한약리학회 대한약리학잡지 1986, 제 22권 제 2호 8 135-143 (9 pages)
저자는 적출관류 토끼 신장기능에서 칼슘의 역할과 furosemide의 이뇨작용에 미치는 영향을 관찰하여 다음과 같은 결과를 얻었다. hydralazine놔 verapamil을 주로 신혈관 저항의 감소로 이뇨작용을 나타냈다. furosemide를 hydralazine 또는 verapamil 병합투여시 뚜렷한 이뇨작용이 나타났으며 두군 사이에 차이는 없었다. quinidine은 신혈관 수축을 일으켰으나 이뇨작용이 나타났으며 furosemide의 이뇨작용을 항진시켰다. 칼슘제외된 관류액으로 관류시 칼슘은 신혈관 수축에도 불구하고 이뇨작용이 나타났으며 furosemide의... -
Role of Na+Ca2+ Exchange in the Control of Contractility in Rabbit Basilar Arterial Smooth Muscle
Kim Eui-Yong, Han Jin 대한생리학회 대한생리학회지 10 Pages
대한생리학회 대한생리학회지 1994, 제 28권 제 2호 6 159-168 (10 pages)
extracellular Na+ concentration. The relaxation rate from caffeine-induced contraction was dependent on the extracellular Na+ concentration (0 mM, 140 mM). From the above results, it could be suggested that Na+/Ca2+ exchange can move Ca2+ either into or out of rabbit basilar arterial smooth muscle. Ca2+ entry or extrusion is dependent upon the Na+ electrochemical gradient. Na+/Ca2+ exchange plays a significant role in the regulation of contractility in rabbit basilar arterial smooth muscle. -
Effects of Lemakalim, a Potassium Channel Opener, on the Contractility and Electrical Activity of the Antral Circular Muscle in Guinea-Pig Stomach
Kim, Sung-Joon, Jun, Jae-Yeoul, Choi, Youn-Baik, Kim, Ki-Whan, Kim, Woo-Gyeum 대한생리학회 대한생리학회지 14 Pages
대한생리학회 대한생리학회지 1994, 제 28권 제 1호 4 37-50 (14 pages)
Synthetic potassium channel openers (KCOs) are agents capable of opening K-channels in excitable cells. These agents are known to have their maximal potency in the smooth muscle tissue, especially in the vascular smooth muscle. Much attention has been focused on the type of K-channel that is responsible for mediating the effects of KCOs. As the KCO-induced changes are antagonized by glibenclamide, an KATP (ATP-sensitive K-channel) blocker in the pancreatic β-cell, KATP was suggested to be the... -
A Study on the Na+/Ca2+ Exchange Mechanism in the Smooth Muscle of Guinea-pig Stomach
Kim, Eui-Yong, Han, Jin, Kim, Ki-Whan 대한생리학회 대한생리학회지 14 Pages
대한생리학회 대한생리학회지 1992, 제 26권 제 1호 6 55-68 (14 pages)
of Na+/Ca2+ exchange mechanism. All experiments were performed in tris buffered Tyrode solution which was aerated with 100% O2 and kept at 35℃. The treatment of 10-5 ouabain was performed to induce intracellular Na+ loading prior to the start of experiment. The results were as follows: 1. Na+-free Tyrode or high Ca2+-Tyrode solution hyperpolarized the membrane potential and induced contracture. The time course of contracture was similar to that of change in membrane potential. 2. The degree of... -
Biogenic Volatile Compounds for Plant Disease Diagnosis and Health Improvement
Rouhallah Sharifi, Choong-Min Ryu 한국식물병리학회 The Plant Pathology Journal 11 Pages
한국식물병리학회 The Plant Pathology Journal 2018, 34권 6호 1 459-469 (11 pages)
Plants and microorganisms (microbes) use information from chemicals such as volatile compounds to understand their environments. Proficiency in sensing and responding to these infochemicals increases an organism’s ecological competence and ability to survive in competitive environments, particularly with regard to plant-pathogen interactions. Plants and microbes acquired the ability to sense and respond to biogenic volatiles during their evolutionary history. However, these signals can only be... -
Antifungal Activity of a Synthetic Cationic Peptide against the Plant Pathogens Colletotrichum graminicola and Three Fusarium Species
한국식물병리학회 The Plant Pathology Journal 6 Pages
한국식물병리학회 The Plant Pathology Journal 2015, 31권 3호 14 316-321 (6 pages)
A small cationic peptide (JH8944) was tested for activity against a number of pathogens of agricultural crops. JH8944 inhibited conidium growth in most of the tested plant pathogens with a dose of 50 μg/ml, although one isolate of Fusarium oxysporum was inhibited at 5 μg/ml of JH8944. Most conidia of Fusarium graminearum were killed within 6 hours of treatment with 50 μg/ml of JH8944. Germinating F. graminearum conidia required 238 μg/ml of JH8944 for 90% growth inhibition. The peptide did... -
Relationships between Genetic Diversity and Fusarium Toxin Profiles of Winter Wheat Cultivars
한국식물병리학회 The Plant Pathology Journal 19 Pages
한국식물병리학회 The Plant Pathology Journal 2015, 31권 3호 4 226-244 (19 pages)
Fusarium head blight is one of the most important and most common diseases of winter wheat. In order to better understanding this disease and to assess the correlations between different factors, 30 cultivars of this cereal were evaluated in a two-year period. Fusarium head blight resistance was evaluated and the concentration of trichothecene mycotoxins was analysed. Grain samples originated from plants inoculated with Fusarium culmorum and naturally infected with Fusarium species. The genetic... -
-
Catalytic hydrogenation-assisted preparation of melt spinnable pitches from petroleum residue for making mesophase pitch based carbon fibers
Dong Hun Lee, Jisu Choi, Young Se Oh, Yoong Ahm Kim, Kap Seung Yang, Ho Jin Ryu, Yong Jung Kim 한국탄소학회 Carbon Letters 8 Pages
한국탄소학회 Carbon Letters 2017, Vol.24 4 28-35 (8 pages)
We demonstrated an effective way of preparing melt spinnable mesophase pitches via catalytic hydrogenation of petroleum residue (fluidized catalytic cracking-decant oil) and their subsequent thermal soaking. The mesophase pitches thus obtained were analyzed in terms of their viscosity, elemental composition, solubility, molecular weight, softening point and optical texture. We found that zeolite-induced catalytic hydrogenation under high hydrogen pressure contributed to a large variation in the... -
Effects of cross-linking methods for polyethylene-based carbon fibers: review
Kwan-Woo Kim, Hye-Min Lee, Jeong-Hun An, Byoung-Suhk Kim, Byung-Gak Min, Shin-Jae Kang, Kay-Hyeok An, Byung-Joo Kim 한국탄소학회 Carbon Letters 24 Pages
한국탄소학회 Carbon Letters 2015, Vol.16 No.3 2 147-170 (24 pages)
In recent decades, there has been an increasing interest in the use of carbon fiber reinforced plastic (CFRP) in aerospace, renewable energy and other industries, due to its low weight and relatively good mechanical properties compared with traditional metals. However, due to the high cost of petroleum-based precursors and their associated processing costs, CF remains a specialty product and as such has been limited to use in high-end aerospace, sporting goods, automotive, and specialist... -
Characterization and influence of shear flow on the surface resistivity and mixing condition on the dispersion quality of multi-walled carbon nanotube/polycarbonate nanocomposites
Young Sil Lee, Kwan Han Yoon 한국탄소학회 Carbon Letters 7 Pages
한국탄소학회 Carbon Letters 2015, Vol.16 No.2 3 86-92 (7 pages)
Multi-walled carbon nanotube (MWCNT)/polycarbonate (PC) nanocomposite was prepared by direct melt mixing to investigate the effect of the shear rate on the surface resistivity of the nanocomposites. In this study, an experiment was carried out to observe the shear induced orientation of the MWCNT in the polymer matrix using a very simple melt flow indexer with various loads. The compression-molded, should be eliminated. MWCNT/PC nanocomposite sample exhibited lower percolation thresholds (at 0.8... -
자동차 알루미늄 서스펜션 암 곡률압출공정에 관한 연구
이상곤, 김병민, 오개희, Lee. Sang-Kon, Kim. Byung-Min, Oh. Kae-Hee 한국정밀공학회 한국정밀공학회지 7 Pages
한국정밀공학회 한국정밀공학회지 2009, Vol.26 No.2 71-77 (7 pages)
-
자동차용 컨트롤 암 알루미늄 열간 압출을 위한 포트홀 금형개발
조영준, 이상곤, 오개희, 박상우, 이우식, 장계원, 김병민, Joe. Young-June, Lee. Sang-Kon, Oh. Kae-Hee, Park. Sang-Woo, Lee. Woo-Sik, Jang. Gae-Won, Kim. Byung-Min 한국정밀공학회 한국정밀공학회지 7 Pages
한국정밀공학회 한국정밀공학회지 2007, Vol.24 No.4 102-108 (7 pages)
-
소성가공시 재료유동에 대한 수치해석 및 모델실험
김헌영, 김동원 대한기계학회 大韓機械學會論文集 15 Pages
대한기계학회 大韓機械學會論文集 1993, Vol.17 No.2 285-299 (15 pages)
의하여 형 내부의 재료 층만 과정을 시뮬레이션 하였으며, 단조 하중, 다이 충만도 및 재료의 유동 경향을 분석하여 적절한 유동 모델 과 초기 소재의 형상을 구하였다. 모델 재료를 사용한 형단조 모의실험을 수행하여 재료유동 및 변형 단계별 단조 하중분포 등을 구하였으며, 해석결과와 비교 분석하였 다. 또한 후방압출(backward extrusion) 및 평두형 펀치에 의한 평판압입(flat pu- nch indentation) 문제를 해석하였다. 후방압출시 모서리부의 라운딩(rounding) 효 과가 재료 유동에 미치는 영향을 고려하였으며, 평두형 펀치에...
