http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Pseudomonas sabulinigri sp. nov., isolated from black beach sand
Kim, K.-H.,Roh, S. W.,Chang, H.-W.,Nam, Y.-D.,Yoon, J.-H.,Jeon, C. O.,Oh, H.-M.,Bae, J.-W. Microbiology Society 2009 International journal of systematic and evolutiona Vol.59 No.1
<P>A novel Gram-negative, aerobic, motile, short rod-shaped bacterium, designated J64T, was isolated from black sand collected from Soesoggak, Jeju Island, Korea. Cells grew at 4-37 degrees C, at pH 5.5-10.0 and with 0-10 % NaCl. The strain was found to be oxidase- and catalase-positive. Phylogenetic analyses showed that strain J64T belongs to the genus Pseudomonas, forming a monophyletic group with Pseudomonas pachastrellae, Pseudomonas pertucinogena and 'Pseudomonas denitrificans'. The 16S rRNA gene sequence similarity between strain J64T and type strains of all Pseudomonas species with validly published names was below 96.6 %. Low levels of DNA-DNA relatedness were found with respect to type strains of P. pachastrellae and P. pertucinogena, supporting the classification of strain J64T within a novel species of the genus Pseudomonas. Strain J64T contained C(18 : 1)omega7c (37.2 %), C(16 : 0) (20.4 %), summed feature 3 (17.4 %; comprising iso-C(15 : 0) 2-OH and/or C(16 : 1)omega7c) and C(12 : 0) (7.6 %) as major cellular fatty acids. On the basis of the phenotypic and phylogenetic data, strain J64T represents a novel species of the genus Pseudomonas, for which the name Pseudomonas sabulinigri sp. nov. is proposed. The type strain is J64T (=KCTC 22137T =JCM 14963T).</P>
Kwak, J.H.,Lim, S.S.,Lee, K.S.,Viet, H.D.,Matsushima, M.,Lee, K.H.,Jung, K.,Kim, H.Y.,Lee, S.M.,Chang, S.X.,Choi, W.J. Elsevier 2016 Chemical geology Vol.420 No.-
<P>To better predict forest productivity under rising atmospheric CO2 concentration ([CO2]), it is critical to understand how intrinsic water-use efficiency (WUEi) and its relationship with tree growth are affected by the concomitant changes in environmental conditions such as precipitation, temperature, and air pollution that either enhance or undermine any potential CO2 fertilization effect. We investigated changes in delta C-13 and WUEi in annual rings and basal area increment (BAI) of Pinus densiflora (from 1968 to 2007) and Quercus variabilis (from 1970 to 2007) trees in relation to precipitation, temperature, and air pollution in a humid temperate forest. The WUEi of P. densiflora increased by 39.9%, whereas that of Q. variabilis did not change over time in the study period. The WUEi was not affected by precipitation for both species but increased (P < 0.001) with temperature for P. densiflora and with SO2 emissions for both species. Multiple regression models suggested that the effect of [CO2] on tree growth was much higher than temperature; however, for the period (1998 to 2007) when SO2 emissions data were available, SO2 emission was the driver of changes in BAI and WUEi, and temperature effects became stronger than [CO2]. Overall, BAI and WUEi were positively (P < 0.001) correlated for P. densiflora, but not for Q. variabilis. We conclude that temperature and air pollution rather than precipitation were key determinants of WUEi at the study site and that the two species had contrasting responses to environmental changes. (C) 2015 Elsevier B.V. All rights reserved.</P>
Pb(Zr, Ti)O₃ 강유전체 박막의 스퍼터링 증착과 후속열처리
장지근(G. K. Chang),박재영(J. Y. Park),윤진모(J. M. Yoon),임성규(S. K. Lim),장호정(H. J. Chang) 한국진공학회(ASCT) 1997 Applied Science and Convergence Technology Vol.6 No.1
Pt/Ti/SiO₂/Si 기판상에 고주파 마그네트론 스퍼터링 방식으로 PZT 박막 [두께: 3000Å]을 증착하고 RTA 방식으로 후속 열처리[열처리온도: 550℃~650℃, 열처리 시간: 10초~50초]를 실시하여 직경 0.2㎜ 소자의 FECAPs(ferroelectric capacitors)를 제작하였다. 제작된 커패시터의 유전상수(ε_r)와 잔류분극(2P_r)은 650℃로 30초간 열처리한 시편에서 ε_r(1kHz) = 690, 2Pr(-5V~5V sweep) = 22 μC/㎠로 가장 높게 나타났으며 유전 정접(tan δ)과 누설전류(J_ㅣ)는 600℃에서 30 초간 열처리한 시편에서 tan δ(≥ 10kHz)≤0.02, J_l(5V)=3 μA/㎠로 가장 낮게 나타났다. FECAPS(ferroelectric capacitors) have been fabricated by RF magnetron sputtering deposition of 3000Å PZT thin films on the Pt/Ti/SiO₂/Si substrates and post-annealing with the temperature of 550℃~650℃ for 10 sec ~50 sec in a RTA system. The electrical characteristics of the fabricated capacitors showed the highest dielectric constant and remanent polarization[ε_r(1kHz) = 690, 2P_r(-5V~5V sweep) = 22 μC/㎠] in the samples annealed at 650℃ for 30 sec, while the lowest tangent loss and leakage current[tan δ(≥10kHz)≤0.02, J_l/5V) = 3 μA/㎠] in the samples annealed at 600℃ for 30 sec.
Interference Effect betweenϕandΛ(1520)Production Channels in theγp→K+K−pReaction near Threshold
Ryu, S. Y.,Ahn, J. K.,Nakano, T.,Ahn, D. S.,Ajimura, S.,Akimune, H.,Asano, Y.,Chang, W. C.,Chen, J. Y.,Daté,, S.,Ejiri, H.,Fujimura, H.,Fujiwara, M.,Fukui, S.,Hasegawa, S.,Hicks, K.,Horie, K.,Ho American Physical Society 2016 Physical Review Letters Vol.116 No.23
<P>The phi-Lambda(1520) interference effect in the gamma p -> K(+)K(-)p reaction has been measured for the first time in the energy range from 1.673 to 2.173 GeV. The relative phases between phi and Lambda(1520) production amplitudes were obtained in the kinematic region where the two resonances overlap. The measurement results support strong constructive interference when K+K- pairs are observed at forward angles but destructive interference for proton emission at forward angles. Furthermore, the observed interference effect does not account for the root s = 2.1 GeV bump structure in forward differential cross sections for phi photoproduction. This fact suggests possible exotic structures such as a hidden-strangeness pentaquark state, a new Pomeron exchange, or rescattering processes via other hyperon states.</P>
Kim, Y.H.,Chang, K.I.,Park, J.J.,Park, S.K.,Lee, S.H.,Kim, Y.G.,Jung, K.T.,Kim, K. Elsevier 2009 Journal of marine systems Vol.78 No.2
Reanalyzed products from a MOM3-based East Sea Regional Ocean Model with a 3-dimentional variational data assimilation module (DA-ESROM), have been compared with the observed hydrographic and current datasets in the Ulleung Basin (UB) of the East/Japan Sea (EJS). Satellite-borne sea surface temperature and sea surface height data, and in-situ temperature profiles have been assimilated into the DA-ESROM. The performance of the DA-ESROM appears to be efficient enough to be used in an operational ocean forecast system. Comparing with the results from Mitchell et al. [Mitchell, D. A., Watts, D. R., Wimbush, M., Teague, W.J., Tracey, K. L., Book, J. W., Chang, K.-I., Suk, M.-S., Yoon, J.-H., 2005a. Upper circulation patterns in the Ulleung Basin. Deep-Sea Res. II, 52, 1617-1638.], the DA-ESROM fairly well simulates the high variability of the Ulleung Warm Eddy and Dok Cold Eddy as well as the branching of the Tsushima Warm Current in the UB. The overall root-mean-square error between 100 m temperature field reproduced by the DA-ESROM and the observed 100-dbar temperature field is 2.1 <SUP>o</SUP>C, and the spatially averaged grid-to-grid correlation between the two temperature fields is high with a mean value of 0.79 for the inter-comparison period. The DA-ESROM reproduces the development of strong southward North Korean Cold Current (NKCC) in summer consistent with the observational results, which is thought to be an improvement of the previous numerical models in the EJS. The reanalyzed products show that the NKCC is about 35 km wide, and flows southward along the Korean coast from spring to summer with maximum monthly mean volume transport of about 0.8 Sv in August-September.
Shiu, S. H.,Kohri, H.,Chang, W. C.,Ahn, D. S.,Ahn, J. K.,Chen, J. Y.,Daté,, S.,Ejiri, H.,Fujimura, H.,Fujiwara, M.,Fukui, S.,Gohn, W.,Hicks, K.,Hotta, T.,Hwang, S. H.,Imai, K.,Ishikawa, T.,Joo, American Physical Society 2018 Physical Review C Vol.97 No.1
<P>We report the measurement of the gamma p -> K+Lambda and gamma p -> K+Sigma(0) reactions at SPring-8. The differential cross sections and photon-beam asymmetries are measured at forward K+ production angles using linearly polarized tagged-photon beams in the range of E-gamma = 1.5-3.0 GeV. With increasing photon energy, the cross sections for both gamma p -> K+Lambda and gamma p -> K+Sigma(0) reactions decrease slowly. Distinct narrow structures in the production cross section have not been found at E gamma = 1.5-3.0 GeV. The forward peaking in the angular distributions of cross sections, a characteristic feature of t-channel exchange, is observed for the production of Lambda in the whole observed energy range. A lack of similar feature for Sigma(0) production reflects a less dominant role of t-channel contribution in this channel. The photon-beam asymmetries remain positive for both reactions, suggesting the dominance of K* exchange in the t channel. These asymmetries increase gradually with the photon energy, and have a maximum value of +0.6 for both reactions. Comparison with theoretical predictions based on the Regge trajectory in the t channel and the contributions of nucleon resonances indicates the major role of t-channel contributions as well as non-negligible effects of nucleon resonances in accounting for the reaction mechanism of hyperon photoproduction in this photon energy regime.</P>
張基永,金鍾悳,李基燦,朱正和 대한신경외과학회 1973 Journal of Korean neurosurgical society Vol.2 No.2
Tracheotomy is a relatively simple operative procedure and should be recommended whenever the patient's ability to maintain an airway or remove secretion is seriously impaired. The complications that develop are generally due to faulty surgical technique. Although the risks of the operative procedure are negligible, the postoperative sequale and complications may produce disability with subsequent long period of treatment before recovery and sometimes fatal. Three adult patients who were complicated with difficult extubation and hemorrhage following tracheotomy for craniocerebral injury are presented. Difficult extubation of canula was seen in a patient whose lumen of the trachea was narrowed by granulation tissue. Whenever the canula was withdrawn the patient became cyanotic with difficulty in respiration. Removal of the granulations that formed on the anterior tracheal wall at the site of the opening and change of tracheotomy site could solve the difficulty. Sudden critical hemorrhage long after the tracheotomy were observed in two patients at the time of extubation of canula. One patient was tracheotomized for 13 days and the other 70 days when they died respectively of the fatal hemorrhage. No autopsy was done, but it could be suspected that the late hemorrhage might have to do with pressure erosion of a large vessel that had been pressing on by the end or the edge of canula.
Chang, S-H,Kim, J-E,Lee, J-H,Minai-Tehrani, A,Han, K,Chae, C,Cho, Y-H,Yun, J-H,Park, K,Kim, Y-S,Cho, M-H Nature America, Inc. 2013 Cancer gene therapy Vol.20 No.6
Conventional radiotherapy or chemotherapy for the long-term survival of patients with lung cancer is still difficult for treatment in metastatic and advanced tumors. Therefore, the safe and effective approaches to the treatment of lung cancer are needed. In this study, the effect of delivered eukaryotic translation initiation factor 4E (eIF4E)-binding protein 1 (4E-BP1) on lung cancer progression was evaluated. Recombinant adeno-associated virus (rAAV)-M3/4E-BP1 was delivered into 6-week-old K-ras<SUP>LA1</SUP> lung cancer model mice through a nose-only inhalation system twice a week for 4 weeks. Long-term repeated delivery of 4E-BP1 effectively reduced tumor progression in the lungs of K-ras<SUP>LA1</SUP> mice. Reduction of eIF4E by overexpression of 4E-BP1 resulted in suppression of cap-dependent protein expression of basic fibroblast growth factor (bFGF or FGF-2) and vascular endothelial growth factor (VEGF). In addition, delivered 4E-BP1 inhibited the proliferation of lung cancer cells in K-ras<SUP>LA1</SUP> mice model. Our results suggest that long-term repeated viral delivery of 4E-BP1 may provide a useful tool for designing lung cancer treatment.