• Asia-pacific Journal of Multimedia Services Convergent with Art, Humanities, and Sociology
• /
• v.6 no.3
• /
• pp.41-49
• /
• 2016

In this paper, an IoT system which is increasingly popular in these days is developed. Among various international standards on the area, one M2M communication protocol is used in the system. The 0neM2M-based IoT system consists of ADN-AE modules and CSE modules. The ADN-AE module provides applications of various services. It also monitors a CSE module. The CES module is a platform that provides common services which should be provided to various AEs in an IoT system. The CSE module consists of a Network Manager module, a Message Handler module, and a Resource Manager module. The Network Manager module controls oneM2M communication and data flow in the system. The Message Handler module processes transmitted messages and the Resource Manager module manages the Resource Tree. The resource tree stores information of the objects to be managed in the system. Also, internal data flow and protocol mapping in the modules are explained.

• The Korean Journal of Physiology and Pharmacology
• /
• v.6 no.2
• /
• pp.63-70
• /
• 2002

Cholinergic modulation of GABAergic spontaneous miniature inhibitory postsynaptic currents (mIPSCs) by the activation of muscarine receptors was investigated in mechanically dissociated rat nucleus basalis of the Meynert neurons using the conventional whole-cell patch recording configuration. Muscarine $(10{\mu}M)$ reversibly and concentration-dependently decreased mIPSC frequency without affecting the current amplitude distribution. Muscarine action on GABAergic mIPSCs was completely blocked by $1{\mu}M$ methoctramine, a selective $M_2$ receptor antagonist, but not by $1{\mu}M$ pirenzepine, a selective $M_1$ receptor antagonist. NEM $(10{\mu}M),$ a G-protein uncoupler, attenuated the inhibitory action of muscarine on GABAergic mIPSC frequency. Muscarine still could decrease GABAergic mIPSC frequency even in the $Ca^{2+}-free$ external solution. However, the inhibitory action of muscarine on GABAergic mIPSCs was completely occluded in the presence of forskolin. The results suggest that muscarine acts presynaptically and reduces the probability of spontaneous GABA release, and that such muscarine-induced inhibitory action seems to be mediated by G-protein-coupled $M_2$ receptors, via the reduction of cAMP production. Accordingly, $M_2$ receptor-mediated disinhibition of nBM neurons might play one of important roles in the regulation of cholinergic outputs from nBM neurons as well as the excitability of nBM neurons themselves.

• The Korean Journal of Zoology
• /
• v.35 no.4
• /
• pp.489-496
• /
• 1992

The karyotypes of 4 Korean Myotis species (M. mystucinus gracilis, M. jormous tsuensis, M. duubentonii ussuriensis and M. macrodoctvlusp and 2 Pipistrelfus species (p. coreensis and p. abramusl belonging to the Vespertilionidae were examined. The 4 Mvotis species had the karyotypes of 2n : 44 with FN : 50 (M. m. gracilis and M. f. tsuensisl or 52 (M. d. ussuriensis and M. mncrodactylus). Furthermore the karyotype of R obrumus (2n : 26, FN : 441 seemed advanced compared with that of U coreensis (2n : 44, FN : 501 which is similar to the original karyotype of Mvotis species (2n : 44, FN : 50).

• Journal of Animal Science and Technology
• /
• v.51 no.2
• /
• pp.177-182
• /
• 2009

The glycosylated human MINPP (multiple inositol polyphosphate phosphatase), which was recombinantly over-expressed by using industrial host, Pichia pastoris, showed the phytase activity against phytate ($InsP_6$) and the enzyme activity of the unglycosylated counterpart was decreased to 30%. The optimal phytase activity occurred at pH 7.4. The human MINPP showed high substrate specificity for $InsP_6$ with little activity on other organic phosphate conjugates such as para-nitrophenylphosphate (pNPP), ATP, and ribose-1-phosphate (R-1-P). The phosphatase activity against 2,3-bisphosphoglycerate (2,3-BPG) by human MINPP was increased to 1.2-fold in the presence of stimulator, 1 mM 2-phosphoglycolate (2-PG) but the phytase activity against $InsP_6$ was not affected by addition of 1 mM 2-PG. The phosphatase activity against 2,3-BPG by human MINPP was not increased in the presence of 2 mM $Mg^{2+}$ or 100 mM $Cl^-$.

• Journal of KIISE:Computer Systems and Theory
• /
• v.31 no.1_2
• /
• pp.86-94
• /
• 2004

In this paper, we show that $ G(2^m, 4), m{\geq}3$with at most m-2 faulty elements has a fault-free cycle of length 1 for every ${\leq}1{\leq}2^m-f_v$ is the number of faulty vertices. To achieve our purpose, we define a graph G to be k-fault hypohamiltonian-connected if for any set F of faulty elements, G- F has a fault-free path joining every pair of fault-free vertices whose length is shorter than a hamiltonian path by one, and then show that$ G(2^m, 4), m{\geq}3$ is m-3-fault hypohamiltonian-connected.

• Journal of Korean Society of Forest Science
• /
• v.80 no.2
• /
• pp.193-201
• /
• 1991

The pollen morphology of 7 taxa, 3 genera of Buxaceae growing in Korea was investigated by means of light(LM) and scanning electron microscope (SEM). The results were as follows ; 1. A key to the genera of Buxaceae on the basis of pollen morphology was provided. 2. Pollen Length that Buxus was $21.9{\mu}m-28.3{\mu}m$, Pachysaradra was $34.9{\mu}m-43.0{\mu}m$ and Sarcococa was $27.2{\mu}m-39.6{\mu}m$ and that muri width and length were $0.3{\mu}m-4.6{\mu}m$, $0.9{\mu}m-4.3{\mu}m$, and that Lumen length was $0.4{\mu}m-2.4{\mu}m$. 3. Sculpture patterns were reticulate (Buxus) and chain shape (Sarcococa and Pachysandra). 4. Aperture type was polyforate.

• Journal of Veterinary Clinics
• /
• v.12 no.1
• /
• pp.789-798
• /
• 1995

우백혈병 바이러스감염 B 세포주(BL2M3 및 BL312)의 배양상층액에 대한 자기세포들의 증식반응을 검토하였다. 그 결과 BL2M3 및 BL312세포의 배양상층액을 자기세포인 BL2M3세포에 첨가했을 때 농도에 비례하여 현저한 증식을 유도하였다. 이것은 배양 4-5일차, 배양상층액의 첨가농도는 50-60%,세포수는 5x$10^4$-5x$10^{5}$ /ml에서 최적의 증식반응을 보였다. 우태아혈청(FBS) 무첨가 BL2M3 및 BL312세포의 배양상층액에 대해서도 BL2M3세포는 동일한 증식반응을 보였다. 한편 BL2M3 및 BL312세포의 배양상층액을 BL312세포에 첨가했을 때는 BL2M3세포의 경우에 비해 현저하지 않았다. 또한 BL2M3 및 BL312세포의 배양상층액은 말초혈액 림프구에 대해서도 pokeweed mitogen(PWM)첨가 유무에 관계없이 증식을 유도하였다. 그러나 PWM자극 말초혈액 단핵세포의 배양상층액은 BL2M3 및 BL312세포에 대해서 전혀 증식을 유도하지 못했다. 이상의 결과로부터 우백혈병 바이러스감염 B세포주 특히 BL2M3세포는 세포자신이 증식인자를 분비하고 그것과 반응하여 증식하는 소위 autocrine growth 양상을 보이는 것으로 판명되었다.

• Korean Journal of Microbiology
• /
• v.29 no.6
• /
• pp.408-415
• /
• 1991

TOL plsmid size of Flavobacterium odoratum SUB53 was estimated as 83 Md and the optimum concentration of m-toluate degradation by TOL plasmid was 5 mM. $H_{2}$ production by Rhodopseudomonas sphaeroides KCTC1425 was largely dependent on nitrogenase activity and showed the highest at 30 mM malate with 7 mM glutamate as nitrogen source. Nitrogenase activities were inhibited by 0.3 mM $NH_{4}^{+}$ions, to be appeared the decrease of $H_{2}$ production. Conjugation of TOL plasmids from F. odoratum SUB53 and Pseudomonas putida mt-2 to R. sphaeroides showed the optimum at the exponential stage of recipient cells in presence of helper plasmid pRK2013. According to the investigation of catechol-1,2-oxygenase (C-1, 2-O) and catechol-2,3-oxygenase (C-2,3-O) activities of R. sphaeroides C1 (TOL SUB53) and C2 (TOL mt-2), the gene for C-2,3-O is located on TOL plasmid and gene for C-1, 2-O on the chromosome of R. sphaeroides. m-Toluate was biodegraded by TOL plasmid in R. sphaeroides C1 and C2, presumably to be produced $H_{2}$ gas from the secondary metabolites of m-toluate.e.

• The Korean Journal of Ecology
• /
• v.21 no.5_2
• /
• pp.519-529
• /
• 1998

The vegetation of alpine and subalpine zone from timber line, 2,000m altitude, to the upper area of Mt. Packtu were investigated by phytosociological method. The plant distribution along to the different altitudes shown as follows: Betula ermani community with Rhododendron redowskianum occupied dominantly at 2,000m area as patch forms, Rhododendron redowskianum community with Vaccinium uliginosum, at 2,180-2,200m area, both Vaccinium uliginosum and Rhododendron redowskianum community were compatible with each other at 2,243m area. Rhododendron redowskianum community at 2,250, Salix rotundifolia community, Erigeron thunbergii var. glabrata community, Dryas octopetala var. asiatica community and Carex atrata community were occurred frequently at 2,263m around Chonji Lake. Rhododendron aureum, Thunbergii coccinea and V accinium uliginosum showed higher cover degree than other species at 2,370m area, Phyllodoce coerulea-Rhododendron aureum community at 2,400m, Rhododendron redowskianum community at 2,470m, Rhododendron aureum community at 2,490m, Salix rotundifolia at 2,520m, Rhododendron redowskianum community at 2,580m, Dryas octopetala var. asiatica community, Salix rotundifolia, and bistorta achotensis etc. at 2,650 altitude area were settled as sparse, creeping shape on the surface soil and dwarf plants of about 15cm heights.

• Journal of Animal Environmental Science
• /
• v.12 no.3
• /
• pp.115-122
• /
• 2006

This study investigated the spatial distribution of dust originating from tunnel-ventilated windowless broiler building measuring 12 m wide, 61 m long, with a side wall height of 3 m and a capacity of 16,982 birds. Dust concentrations in terms of total suspended particles (TSP), and particulate matter of sizes $10\;{\mu}m$(PM10), $2.5\;{\mu}m$(PM2.5), and $1\;{\mu}m(PM1)$ were measured at 30 minutes interval by using GRIMM Aerosol Monitor (GRIMM AEROSOL). The spatial distribution of dust showed the lower dust concentration in the inlet than in the outlet of the tunnel ventilation, and dust concentration decreasing as the dust size decreased, as follows: $317.9\;{\mu}g/m^3$ TSP; $74.7{\mu}m/m^3$ PM10; $9.7\;{\mu}g/m^3$ PM2.5; and $6.2\;{\mu}g/m^3$ PM1 in the inlet; and $2,678.5\;{\mu}g/m^3$ TSP; $555.5\;{\mu}g/m^3$ PM10; $33.3\;{\mu}g/m^3$ PM2.5; and $10.2\;{\mu}g/m^3$ PM1 in the outlet. The dust concentration emitted from the tunnel ventilated fan was $446.6\;{\mu}g/m^3$ TSP; $129.1\;{\mu}g/m^3$ PM10; $15.8\;{\mu}g/m^3$ PM2.5; and $6.1\;{\mu}g/m^3$ PM1 in the 3 meters from the fan and $25.1\;{\mu}g/m^3$ TSP; $8.8\;{\mu}g/m^3$ PM10; $5.6\;{\mu}g/m^3$ PM2.5; and $4.9\;{\mu}g/m^3$ PM1 in the 50 meters from the fan.