• Title/Summary/Keyword: NSC

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Ultrastructural studies on the neurosecretory cells in the pars intercerebralis of larvae of tasar silkworm, Antheraea mylitta (D) eco-race Bhandara (Lepidoptera: Saturniidae)

  • Barsagade, Deepak Dewaji;Gharade, Shruti Arvind
    • International Journal of Industrial Entomology and Biomaterials
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    • v.29 no.1
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    • pp.120-127
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    • 2014
  • The cerebral neurosecretory cells (NSC) constitute four paired groups, medial (MNC), lateral (LNC-I, LNC-II) and posterior (PNC) in the brain of larvae of tasar silkworm Antheraea mylitta (D) Eco-race Bhandara. The MNC is the largest groups of peptidergic neurosecretory cells and are located in the pars intercerebralis region. The transmission electron microscopic (TEM), ultrastructure of the NSC confirmed the presence of mitochondria, endoplasmic reticulum, Golgi bodies, lysosomes and neurosecretory granules. The median neurosecretory cells shows secretory activity and release of secretory products, the neurosecretory granules (NSG) in the axons of NSC as well as the blood sinus.

Characteristics of CCh-activated Nonselective Cation Channel in Gastric Smooth Muscle Cells.

  • Kang, Tong-Mook;Kim, Young-Chul;Rhee, Poong-Lyul;So, In-Suk;Rhee, Jong-Chul;Uhm, Dae-Yong;Kim, Ki-Whan
    • Proceedings of the Korean Biophysical Society Conference
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    • 1997.07a
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    • pp.26-26
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    • 1997
  • In the present study, we recorded CCh-activated nonselective cation (NSC) current in guinea-pig gastric smooth muscle cells and investigated the characteristics of the current. In whole-cell voltage-clamp mode, CCh activated NSC current. The same NSC current could be activated by internal dialysis of GTP${\gamma}$S.(omitted)

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Performance Analysis of NOMA with Symmetric Superposition Coding

  • Chung, Kyuhyuk
    • Journal of IKEEE
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    • v.23 no.1
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    • pp.314-317
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    • 2019
  • Recently, the symmetric superposition coding (SSC) [3] is proposed for a solution for the error propagation (EP) due to the non-perfect successive interference cancelation (SIC) in non-orthogonal multiple access (NOMA). We analyze the performance of NOMA with the SSC. It is shown that the performance of the SSC NOMA is the same as that of NOMA with the normal superposition coding (NSC) for the power allocation factor less than 20%, the SSC NOMA performance is better than the NSC NOMA performance up to the power allocation factor 80%, and the SSC NOMA performs worse than the NSC NOMA for the power allocation factor greater than 80%. As a result, the SSC should be used with consideration of the power allocation.

Characterization of the Stretch-Activated Channel in the Hamster Oocyte (햄스터난자에서 신전에 의해 활성화되는 통로의 성상)

  • Kim, Y.-M.;Hong, S.-G.
    • Journal of Embryo Transfer
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    • v.19 no.2
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    • pp.89-99
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    • 2004
  • Stretch-activated channels (SACs) responds to membrane stress with changes in open probability (Po). They play essential roles in regulation of cell volume and differentiation, vascular tone, and in hormonal secretion. SACs highly present in Xenopus oocytes and Ascidian oocytes are suggested to be involved in the regulation of pH and fluid transport to balance the osmotic pressure, but remain unclear in mammanlian oocytes. This study was investigated to find the presence of SACs in hamster oocytes and to examine their electrophysiological properties. To infer a role of SAC in relation to the development of early stage, we followed up to the stage of two-cell zygote with patch clamp techniques. Single channels were elicited by negative pressure (lower than ­15 cm$H_2O$). Interestingly, SACs were dependent on permeable cations such as $Na^+$ or $K^+$. As permeable cation removed from both sides across the membrane, SAC activity completely disappeared. When permeable cations present only in intracellular compartment, outward currents appeared at positive potentials. In contrast to this, inward currents occurred only at the negative voltage when permeable cation absent in cell interior. These result suggests that SAC carry cations through the nonselective cation channel (NSC channel). Taken together, we found that stretch activated channels present in hamster oocyte and the channel may carry cations through NSC channels. This stretch activated-NSC channels may play physiological role(s) in oocyte growth, maturation, fertilization and embryogenesis in fertilized oocytes to two-cell zygotes of hamster.

Effect of GA, IAA, Kinetin on Plant Regrowth of Sorghum(Sorghum vulgare Per.) and Pearlmillet (Pennisetum typhoides Stapf.) after Cut (지베레린, 오옥신, 카이네틴 처리가 수수 및 진주조의 재생에 미치는 영향)

  • 서종호;이호진
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.37 no.2
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    • pp.141-148
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    • 1992
  • Field experiment was carried out to investigate the effect of plant growth regulator (PGR); IAA, GA, Kinetin to regrowth of sorghum and pearlmillet according to variety and plant growth stage. Kinetin application after cut increased tiller number and decreased dry weight of regrowth, but its application on sorghum stubble in water stress increased tiller number and leaf elongation rate, consequently increased regrowth dry weight. GA application reduced tiller production in both species, but tiller formation in pearlmillet was decreased more than in sorghum by promoting leaf elongation of old tiller. Nonstructural carbohydrate (NSC) of stubble during regrowth was consumed less at anthesis than at stem elongation stage because of senescence of tiller primordia. GA treatment reduced NSC content more than other PGR in both plant species, by consuming reserve NSC and stimulating rapid elongation of old tiller after cut. Dry matter increase during regrowth had high correlation with tiller number and tiller elongation a week after cut, while it did not have any correlation with NSC at cutting stage or with consumption of NSC during regrowth. Therefore, regrowth in sorghum and pearmillet must depend upon activity of tiller primordia more than upon amount of reserved NSC.

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Characterization of Cellulase from Bacillus subtilis NSC Isolated from Soil (토양으로부터 단리한 Bacillus subtilis NSC 유래 Cellulase의 특성 규명)

  • Kim, Sang Jin;Park, Chang-Su
    • Journal of Chitin and Chitosan
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    • v.23 no.4
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    • pp.228-233
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    • 2018
  • We isolated microorganisms from soil, which is sampled at forest, Kyeonbuk, Korea, as cellulolytic microorganisms. The isolated strains were identified by analysis of 16S rRNA gene from the starins. The result, four kinds of Bacillus subtilis, one kind of Bacillus amyloliquefaciens, and one kind of Bacillus cereus were identified. Among these strains, Bacillus subtilis was selected due to its high cellulase activity and this strain was named as Bacillus subtilis CNS. The optimum pH and temperature of the cellulase from Bacillus subtilis CNS was pH 5.0 and $40^{\circ}C$, respectively. In the investigation of pH and temperature stability, the cellulase from Bacillus subtilis NSC stabled pH 4.0~6.0 range and until $40^{\circ}C$ for 30 min perfectly. In the enzyme activity for various cellulosic substrate, cellulase from Bacillus subtilis CNS showed the highest activity for CM-cellulose. And, the enzyme activities for alkali swollen cellulose, Alpha-cellulose, Sigmacell-cellulose, and Avicel were approximately 31%, 8%, 8% and 4% of activity for CM-cellulose, respectively. In the degradation of CM-cellulose, the 0.26 U/ml and 0.52 U/ml of cellulase showed 0.43 and 0.76 U/ml activity for CM-cellulose after the reaction of 120 min, respectively.

Electra-Optic Effect of Nonchiral Smectic C Liquid Crystal Mode with Negative Dielectric Anisotropy

  • Yu, Chang-Jae;Jang, Eun-Je;Lee, Sin-Doo
    • 한국정보디스플레이학회:학술대회논문집
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    • 2002.08a
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    • pp.467-470
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    • 2002
  • We report on an analog electro-optic effect in a nonchiral smectic C (NSC) liquid crystal (LC) mode with negative dielectric anisotropy in a transverse electrode configuration. Two-dimensional numerical simulations are executed to evaluate the display performances. The analog gray scales in the NSC LC mode are obtained in a dielectrically driving scheme.

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An Experimental Study on the Mechanical Behavior of High-Strength Concretes Subjected to High Temperature (고온을 받은 고강도 콘크리트의 역학적 특성에 관한 실험적 연구)

  • Yang, Keun-Hyeok;Hong, Seong-Woo
    • Proceedings of the Korea Concrete Institute Conference
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    • 2005.05b
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    • pp.25-28
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    • 2005
  • The experimental results on the mechanical behavior of high-strength concretes subjected to high temperature were presented. Main variables were heating temperature, heating continuance time, and cooling condition. The compressive strength properties of high strength concrete(HSC) varied differently with temperature than those of normal strength concrete(NSC). HSC had higher rates of strength loss than NSC in the temperature range of between $20^{circ}C$ and $400^{circ}C$. Especially, HSC exploded in $400^{circ}C$ of high temperature.

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Analysis of Loss of Offsite Power Transient Using RELAP5/MOD1/NSC; II: KNU1 Design-Base Simulation (RELAP5/MOD1/NSC를 이용한 원자력 1호기 외부전원상실사고해석;II:설계기준사고)

  • Kim, Hyo-Jung;Chung, Bub-Dong;Lee, Young-Jin;Kim, Jin-Soo
    • Nuclear Engineering and Technology
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    • v.18 no.3
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    • pp.175-182
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    • 1986
  • The KNUI (Korea Nuclear Unit 1) loss of offsite power transient as a design-base accident has been simulated using the RELAP5/MOD1/NSC computer code. The analysis is carried out using the best-estimate methodology, but the sequence and its assumptions are based on the evaluation methodology th at emphasizes conservatism. Important thermal-hydraulic parameters such as average temperature, steam generator level and pressurizer water volume are compared with the results in the KNU1 Final Safety Analysis Report (FSAR). The present analysis gives much lower RCS average temperature and pressurizer water volume, and much higher S/G water volume at the turnaround point, which may be considered to be additional improved safety margins. This is expected since the present analysis deals with the best-estimate thermal-hydraulic models as well as the initial conditions on a best-estimate basis. These additional safety margins may contribute to further validate the safety of the KNU1 in this type of accidents(Decrease in Heat Removal by the Secondary System).

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