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Program Cache Busy Time Control Method for Reducing Peak Current Consumption of NAND Flash Memory in SSD Applications
Park. Se-Chun, Kim. You-Sung, Cho. Ho-Youb, Choi. Sung-Dae, Yoon. Mi-Sun, Kim. Tae-Yun, Park. Kun-Woo, Park. Jongsun, Kim. Soo-Won 한국전자통신연구원 ETRI journal 4 Pages
한국전자통신연구원 ETRI journal 2014, Vol.36 No.5 876-879 (4 pages)
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ESD 보호 소자를 탑재한 Peak Current-mode DC-DC Buck Converter
박준수, 송보배, 유대열, 이주영, 구용서, Park. Jun-Soo, Song. Bo-Bae, Yoo. Dae-Yeol, Lee. Joo-Young, Koo. Yong-Seo 한국전기전자학회 전기전자학회논문지 6 Pages
한국전기전자학회 전기전자학회논문지 2013, Vol.17 No.1 77-82 (6 pages)
논문에서는 인덕터의 흐르는 전류를 감지하여 출력 전압을 일정하게 유지시키는 Peak Current-mode 방식의 DC-DC Buck Converter를 제안하고, 소신호 모델링에 기초하여 Power Stage 설계 방법과 시스템의 안정도를 설계하는 방법을 제안한다. 또한, dc-dc 컨버터의 신뢰성과 성능을 향상시키기 위해 보호회로를 추가하였다. 그리고 정전기 방지를 위하여 ESD 보호회로를 제안하였다. 제안된 보호회로는 게이트-기판 바이어싱 기술을 이용하여 낮은 트리거 전압을 구현하였다. 시뮬레이션 결과는 일반적인 ggNMOS의 트리거 전압(8.2V) 에... -
A Fast Response Integrated Current-Sensing Circuit for Peak-Current-Mode Buck Regulator
Ha. Jung-Woo, Park. Byeong-Ha, Kong. Bai-Sun, Chun. Jung-Hoon 대한전자공학회 Journal of semiconductor technology and science 8 Pages
대한전자공학회 Journal of semiconductor technology and science 2014, Vol.14 No.6 810-817 (8 pages)
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Negative Differential Resistance Devices with Ultra-High Peak-to-Valley Current Ratio and Its Multiple Switching Characteristics
Shin. Sunhae, Kang. In Man, Kim. Kyung Rok 대한전자공학회 Journal of semiconductor technology and science 5 Pages
대한전자공학회 Journal of semiconductor technology and science 2013, Vol.13 No.6 546-550 (5 pages)
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The current epidemiological status of infectious coryza and efficacy of PoulShot Coryza in specific pathogen-free chickens
Moo-Sung Han, Jong-Nyeo Kim, Eun-Ok Jeon, Hae-Rim Lee, Bon-Sang Koo, Kyeong-Cheol Min, Seung-Baek Lee, Yeon-Ji Bae, Jong-Suk Mo, 대한수의학회 Journal of Veterinary Science 8 Pages
대한수의학회 Journal of Veterinary Science 2016, 제 17권 제 3호 8 323-330 (8 pages)
Infectious coryza (IC) is an infectious disease caused by Avibacterium (Av.) paragallinarum. IC is known to cause economic losses in the poultry industry via decreased egg production in layers. Between 2012 and 2013, Av. paragallinarum was isolated from seven chicken farms by Chungbuk National University. We identified Av. paragallinarum, the causative pathogen of IC by polymerase chain reaction (PCR) and serovar serotype A, by multiplex PCR. Antibiotic sensitivity tests indicated that a few... -
Inhibition of voltage-dependent K+ current in rabbit coronary arterial smooth muscle cells by the class Ic antiarrhythmic drug propafenone
Jin Ryeol An, Hongliang Li, Mi Seon Seo, Won Sun Park 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2018, Vol.22 No.5 13 597-605 (9 pages)
2 Hz progressively increased the propafenone-induced inhibition of the Kv current. Furthermore, the inactivation recovery time constant was increased after the application of propafenone, suggesting that the inhibitory action of propafenone on Kv current is partially use-dependent. Pretreatment with Kv1.5, Kv2.1 or Kv7 inhibitor did not change the inhibitory effect of propafenone on the Kv current. Together, these results suggest that propafenone inhibits the vascular Kv channels in a dose- and... -
Low Non-NMDA Receptor Current Density as Possible Protection Mechanism from Neurotoxicity of Circulating Glutamate on Subfornical Organ Neurons in Rats
WoneeChong, SeongNamKim, SeongKyuHan, SoYeongLee, PanDongRyu 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 5 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2015, Vol.19 No.2 13 177-181 (5 pages)
glutamate-induced current in SFO neurons was significantly smaller than that in hippocampal CA1 neurons (0.55 vs. 2.07 pA/pF, p＜0.05). To further identify the subtype of the glutamate receptors involved, the whole cell currents induced by selective agonists were then compared. The current densities induced by AMPA (0.45 pA/pF) and kainate (0.83 pA/pF), non-NMDA glutamate receptor agonists in SFO neurons were also smaller than those in hippocampal CA1 neurons (2.44 pA/pF for AMPA, p＜0.05; 2.34... -
Effect of Stimulus Waveform of Biphasic Current Pulse on Retinal Ganglion Cell Responses in Retinal Degeneration (rd1) mice
KunNoAhn, JeongYeolAhn, Jae-hyungKim, KyoungrokCho, Kyo-inKoo, SolomonS.Senok, YongSookGoo 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2015, Vol.19 No.2 12 167-175 (9 pages)
A retinal prosthesis is being developed for the restoration of vision in patients with retinitis pigmentosa (RP) and age-related macular degeneration (AMD). Determining optimal electrical stimulation parameters for the prosthesis is one of the most important elements for the development of a viable retinal prosthesis. Here, we investigated the effects of different charge-balanced biphasic pulses with regard to their effectiveness in evoking retinal ganglion cell (RGC) responses. Retinal... -
Voltage-dependent Ca2＋ Current Identified in Freshly Isolated Interstitial Cells of Cajal (ICC) of Guinea-pig Stomach
YoungChulKim, HikaruSuzuki, Wen-XieXu, HikaruHashitani, WoongChoi, Hyo-YungYun, Seon-MeePark6, SeiJinYoun6, Sang-JeonLee, SangJinLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2008, Vol.12 No.6 6 323-330 (8 pages)
times min−1, respectively, in the presence of 1</SUP>ՌM nifedipine. Single ICC-MY isolated by enzyme treatment also showed c-Kit immunohistochemical reactivity. These cells were also identified by generation of spontaneous inward current under K＋-rich pipette solution. The voltage clamp experiments revealed the amplitude of - 329 pA inward current at irregular frequency. With Cs＋-rich pipette solution at Vh=−80 mV, ICC-MY produced voltage-dependent inward currents (VDIC... -
Acidic pH-activated Cl? Current and Intracellular Ca2＋ Response in Human Keratinocytes
SuJungPark, WonWooChoi, OhSangKwon, JinHoChung, HeeChulEun, YungEEarm, SungJoonKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2008, Vol.12 No.4 8 177-184 (8 pages)
The layers of keratinocytes form an acid mantle on the surface of the skin. Herein, we investigated the effects of acidic pH on the membrane current and [Ca2＋]c of human primary keratinocytes from foreskins and human keratinocyte cell line (HaCaT). Acidic extracellular pH (pHe≤5.5) activated outwardly rectifying Cl− current (ICl,pH) with slow kinetics of voltage-dependent activation. ICl,pH was potently inhibited by an anion channel blocker 4,4`-diisothiocyanostilbene-2,2`-disulphonic... -
Lysophosphatidylcholine Increases Ca2+ Current via Activation of Protein Kinase C in Rabbit Portal Vein Smooth Muscle Cells
SeungsooJung, YounghoLee, SungsikHan, YoungwhanKim, TaiksangNam, DucksunAhn 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 4 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2008, Vol.12 No.1 5 31-34 (4 pages)
of LPC on L-type Ca2+ current (ICa(L)) activity and to elucidate the mechanism of LPC-induced change of ICa(L) in rabbit portal vein smooth muscle cells using whole cell patch clamp. Extracellular application of LPC increased ICa(L) through whole test potentials, and this effect was readily reversed by washout. Steady state voltage dependency of activation or inactivation properties of ICa(L) was not significantly changed by LPC. Staurosporine (100 nM) or chelerythrine (3ՌM), which is a... -
Regulation of L-type Calcium Channel Current by Somatostatin in Guinea-Pig Gastric Myocytes
YoungChulKim, JaeHoonSim, SangJinLee, TongMookKang, SungJoonKim, SeungRyulKim, SeiJinYoun, SangJeonLee, Wen-XieXu6, InsukSo, KiWhanKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2005, Vol.9 No.2 5 103-108 (6 pages)
To study the direct effect of somatostatin (SS) on calcium channel current (IBa) in guinea-pig gastric myocytes, IBa was recorded by using whole-cell patch clamp technique in single smooth muscle cells. Nicardipine (1μM), a L-type Ca2+ channel blocker, inhibited IBa by 98⁑1.9% (n=5), however IBa was decreased in a reversible manner by application of SS. The peak IBa at 0 mV were decreased to 95⁑1.1, 92⁑1.9, 82⁑4.0, 66⁑5.8, 10⁑2.9% at 1010, 109,... -
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)
into a huge inward current of 12.9⁑0.5 pA/pF. From the inward current, two different inward INCXs were identified. One was 10 μM ryanodine-sensitive, constituting 14.2⁑2.3%. It was completely blocked by CdCl2 (0.1 mM and 0.5 mM) and by Na-depletion. The other was identified by 5 mM NiCl2 after suppression of ICaL and ryanodine receptor, constituting 14.8⁑1.6%. This latter was blocked by either 10 mM caffeine-induced SR Ca2-depletion or 1 mM tetracaine.... -
Altered Calcium Current of the Vascular Smooth Muscle in Renal Hypertension
SangChaeNam, HyeJeonJeong, WonjaeKim, JongUnLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1999, Vol.3 No.3 13 351-356 (6 pages)
from VSM cells was larger in 2K1C hypertension than in control. Neither the voltage-dependence of the calcium current nor the cell capacitance was significantly affected by 2K1C hypertension. By contrast, the amplitude of the calcium current was not altered in DOCA-salt hypertension. These results suggest that high-threshold calcium current of the VSM cells is altered in 2K1C hypertension, and that calcium channel may not be involved in calcium recruitment of VSM in DOCA-salt hypertension. -
Increase of L-type Calcium Current by cGMP-dependent Protein Kinase Regulates in Rabbit Ventricular Myocytes
JinHan, NariKim, EuiyongKim, WonkyungHo, YungEEarm, HankyounKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1998, Vol.2 No.6 10 733-742 (10 pages)
Background: We have previously reported that not only cGMP but also 8-Br-cGMP or 8-pCPT-cGMP, specific and potent stimulators of cGMP-dependent protein kinase (cGMP-PK), increased basal L-type calcium current (ICa) in rabbit ventricular myocytes. Our findings in rabbit ventricular myocytes were entirely different from the earlier findings in different species, suggesting that the activation of cGMP-PK is involved in the facilitation of ICa by cGMP. However, there is no direct evidence that... -
Inhibitory Effect of Caffeine on Carbachol-Induced Nonselective Cationic Current in Guinea-Pig Gastric Myocytes
SungJoonKim, KyungWanMin, YoungChulKim, SangJinLee, InsukSo, KiWhanKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1998, Vol.2 No.3 10 353-359 (7 pages)
by carbachol (CCh) activates nonselective cation channel current (ICCh) which is facilitated by intracellular [Ca2] increase. Caffeine is widely used in experiments to mobilize Ca2 from intracellular stores. This study shows a strong inhibitory effect of caffeine on ICCh in guinea-pig gastric myocyte. In this study, the underlying mechanism of the inhibitory effect of caffeine was investigated. ICCh was completely suppressed by the addition of caffeine (10 mM) to the superfusing... -
Effects of Arachidonic Acid on the Calcium Channel Current (IBa) and on the Osmotic Stretch-induced Increase of IBa in Guinea-Pig Gastric Myocytes
WenXieXu, SungJoonKim, InsukSo, SukHyoSuh, KiWhanKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1997, Vol.1 No.4 10 435-443 (9 pages)
the whole-cell patch clamp technique to investigate the effects of arachidonic acid (AA) on barium inward current through the L-type calcium channels (IBa) and on osmotic stretch-induced increase of IBa in guinea-pig antral gastric myocytes. Under isosmotic condition, AA inhibited IBa in a dose-dependent manner to 91.1⁑1.4, 72.0⁑3.2, 46.0⁑1.8, and 20.3⁑2.3% at 1, 5, 10, 30 mM, respectively. The inhibitory effect of AA was not affected by 10 ㄍM indomethacin, a... -
Calcium Current in the Unfertilized Egg of the Hamster
Haan, Jae-Hee, Cho, Soo-Wan, Yang, Young-Sun, Park, Young-Geun, Park, Hong-Gi, Chang, Gyeong-Jae, Kim, Yang-Mi, Park, Choon-Ok, Hong, Se 대한생리학회 대한생리학회지 10 Pages
대한생리학회 대한생리학회지 1994, 제 28권 제 2호 12 215-224 (10 pages)
in the bathing solution, indicating that the inward current is carried by Ca2+. The maximal amplitude was -4.12±0.58nA (n=12) with 10mM Ca2+ at -3OmV from a holding potential of -8OmV. This current reached its maximum within 20ms beyond -3OmV and decayed rapidly with an inactivation time constant τ of 15ms. Activation and inactivation of this iCa2+ was steeply dependent on the membrane potential. The iCa2+ began to activate at the lower voltage of -55 mV and reached its peak at -35 mV, being... -
Ca2+-activated Cl- Current in Gastric Antral Myocytes
Lee, Moo-Yeol, Bang, Hyo-Weon, Uhm, Dae-Yong, Rhee, Sang-Don 대한생리학회 대한생리학회지 8 Pages
대한생리학회 대한생리학회지 1994, 제 28권 제 2호 4 143-150 (8 pages)
are known anion channel blockers abolished the caffeine induced current. Intracellular application of a high concentration of EGTA also abolished this current. Application of c-AMP, c-GMP, heparin, or AIF-4 made no remarkable changes to this current. Sodium replacement with the impermeable cation N-methylglucamine or with Cd2+ rarely affected this current. From the above results it is suggested that the caffeine induced current was a Cl- current and it was activated by intracellular Ca2+. -
Effect of Cyclic GMP on the Calcium Current in Rabbit Ventricular Myocytes
Han, Jin, Leem, Chae-Hun, Ahn, Chul-Soo, So, In-Suk, Kim, Eui-Yong, Ho, Won-Kyung, Earm, Yung-E 대한생리학회 대한생리학회지 12 Pages
대한생리학회 대한생리학회지 1993, 제 27권 제 2호 4 151-162 (12 pages)
mV. Not only cyclic AMP (100 μM) but also cyclic GMF (100 μM) increased the basal calcium current. 8-Bromo-cyclic GMP (100 μM), a good stimulator of the cyclic GMP-dependent protein kinase, also increased the basal calcium current and its peak amplitude of calcium current was larger than that in the presence of cyclic AMP or cyclic GMP alone. In the presence of 100 μM cyclic GMP or 100 μM 8-bromo-cyclic GMP, already augmented calcium current was potentiated by intracellular application of... -
Effects of Noradrenaline on the Spontaneous Contraction and Ionic Current in the Antral Circular Muscle of Guinea-pig Stomach
Jun, Jae-Yeoul, Lee, Sang-Jin, Kim, Sung-Joon, Suh, Jae-Yul, So, In-Suk, Hwang, Sang-Ik, Kim, Ki-Whan 대한생리학회 대한생리학회지 8 Pages
대한생리학회 대한생리학회지 1993, 제 27권 제 2호 1 115-122 (8 pages)
There is evidence that noradrenaline enhances spontaneous contractions dose-dependently in guinea-pig antral circular muscle. To investigate the mechanism of this excitatory action, slow waves and membrane currents were recorded using conventional microelectrode techniques in muscle strips and the whole cell patch clamp technique in isolated gastric myocytes. On recording slow waves, noradrenaline (10-5 M) induced the hyperpolarization of the membrane potential, although the shape of the slow... -
Low-Voltage Activated Ca2+ Current Carried via T-Type Channels in the Mouse Egg
Yang, Young-Sun, Park, Young-Geun, Cho, Soo-Wan, Cheong, Seung-Jin, Haan, Jae-Hee, Park, Choon-Ok, Hong, Seong-Geun 대한생리학회 대한생리학회지 8 Pages
대한생리학회 대한생리학회지 1993, 제 27권 제 1호 10 107-114 (8 pages)
was -31 mV and that of inactivation was -39 mV, respectively. This current was not decreased significantly by nifedipine, a specific dihydropyridine Ca2+ channel blocker in the range of 1 μM to 100μM. The inhibitory effect of Ni2+ on Ca2+ current was greater than that of Cd2+. The conductance of Ba2+ through the channel was equal to or lower than that of Ca2+ These results implied that Ca2+ current activated at a lower voltage in the mouse egg is carried via a Ca2+ channel with similar... -
Effect of Various Divalent Ions on the Calcium Current of Adrenal Medullary Chromaffin Cells in the Rat
Kim, Jun, Leem, Chae-Hun, Kim, Sang-Jeong 대한생리학회 대한생리학회지 10 Pages
대한생리학회 대한생리학회지 1992, 제 26권 제 2호 2 113-122 (10 pages)
effect of divalent cations on VDCC of rat chromaffin cells. Rat (Sprague-Dawley rat, 150-250 gm) chromaffin cells were isolated and cultured. Standard giga seal, whole cell recording techniques were employed to study Ca2+ current with external and internal solutions that could effectively isolate VDCC currents (NMG in external and TEA and Cs2+ in internal solution). The voltage dependence and the inactivation time course of VDCC in our cells were identical to those of bovine chromaffin cells. A... -
Calcium Current and Background Current Activation in L-triiodothyronine Loaded Ventricular Myocytes of the Rabbit
Han, Jin, Kim, Eui-Yong, Han, Jae-Hee, Park, Choon-Ok, Hong, Seong-Geun, Leem, Chae-Hun, So, In-Suk, Ho, Won-Kyung, Earm, Yung-E, Sung, H 대한생리학회 대한생리학회지 14 Pages
대한생리학회 대한생리학회지 1992, 제 26권 제 2호 1 99-112 (14 pages)
loaded cells. The degree of increase of ICa after perfusing isoprenaline or IBMX also was greater in T3 loaded cells than in control cells. Background current induced by isoprenaline also increased in T3 loaded cells. The Ca release dependent inward current was increased in amplitude but its activation and inactivation time course was not changed in T3 loaded cells. Activation of Na pump current was not changed in T3 loaded cells. From the above results it is suggested that thyroid hormone induc... -
Cl--sensitive Component of Ca2+-activated Tail Current in Rabbit Atrial Myocytes
Park, Choon-Ok, So, In-Suk, Ho, Won-Kyung, Kim, Woo-Gyeum, Earm, Yung-E 대한생리학회 대한생리학회지 10 Pages
대한생리학회 대한생리학회지 1992, 제 26권 제 1호 3 27-36 (10 pages)
predicted chloride current calculated from the constant field equation. The currents recorded in rabbit atrial myocytes, with the method showing isolated outward Na Ca exchange current in ventricular cells of the guinea pig, suggested that chloride conductance could be activated with the activation of Na/ca exchange current. From the above results it is concluded that a chloride sensitive component which is activated by intracellular calcium contributes to tail currents in rabbit atrial cells. -
Overlook of current chemical vapor deposition-grown large single-crystal graphene domains
Kyung Tae Park, Taehoon Kim, Chong Rae Park 한국탄소학회 Carbon Letters 11 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.3 1 151-161 (11 pages)
Not only has good monolayer growth of graphene been achieved, but large-area synthesis of graphene sheets has been successful too. However, the polycrystalline nature of CVD graphene is hampering further progress as graphene property degrades due to presence of grain boundaries. This review will cover factors that affect nucleation of graphene and how other scientists sought to obtain large graphene domains. In addition, the limitation of the current research trend will be touched upon as well. -
Analysis on Current Limiting Characteristics According to the Influence of the Magnetic Flux for SFCL with Two Magnetic Paths
Ko. Seok-Cheol, Han. Tae-Hee, Lim. Sung-Hun 대한전기학회 Journal of electrical engineering & technology 5 Pages
대한전기학회 Journal of electrical engineering & technology 2014, Vol.9 No.6 1909-1913 (5 pages)
