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Atsushi Kato,Hiroaki Kato,Takuhiro Shida,Tamao Saito,Yoshibumi Komeda 한국식물학회 2009 Journal of Plant Biology Vol.52 No.6
Comparative analysis of nucleotide sequences of the genomic region located around 100 map unit of chromosome 1 using two accessions, Columbia (Col) and Landsberg erecta (Ler), of Arabidopsis thaliana was performed. High divergence was detected between them, and the length of the Ler sequence was half of corresponding sequence of Col. This divergence occurred by tandem duplication, deletion of large regions, and insertion of unrelated sequences. These events led to the high polymorphism of plant disease resistant genes, which are located in the analyzed region. It is highly probable that two-round duplication occurred, and the insertion sequences are transposable elements. The data suggest that the analyzed region had been evolving until quite recently.
Hiroaki Kato,Takuhiro Shida,Yoshibumi Komeda,Tamao Saito,Atsushi Kato 한국식물학회 2011 Journal of Plant Biology Vol.54 No.3
The protein encoded by the activated disease resistance 1-like1 (ADR1-L1) gene (locus name, At4g33300)belongs to the activated disease resistance 1 (ADR1) family of coiled-coil nucleotide-binding site leucine-rich repeat-type disease resistance proteins. This family contains four proteins and they have specific features in their amino acid sequences. It has been reported that ADR1 protein belongs to the ADR1family, which is related to not only defense response but also drought tolerance. We found that transgenic plants overexpressing the ADR1-L1 gene showed a dwarf phenotype and morphological change in leaves. The expression levels of defense-related genes and the resistance to Pseudomonas syringae pv. tomato DC3000 were increased in transgenic plants. However, enhancement of drought tolerance and activation of abiotic response genes were not observed. When the growth temperature was changed from 22°C to 28°C, the expression of defense-related genes and the enhancement of resistance to a bacterial pathogen were suppressed and the dwarf phenotype and morphological change of leaves recovered.
Laparoscopic and Robotic Liver Resection Using Advanced 3D Liver Simulation Software
( Atsushi Sugioka ),( Yutaro Kato ),( Yoshinao Tanahashi ),( Tadashi Kagawa ),( Masayuki Kojima ),( Sanae Nakajima ),( Syo-ichiro Tsuji ),( Ichiro Uyama ) 대한간학회 2016 춘·추계 학술대회 (KASL) Vol.2016 No.1
Background: Minimally invasive liver resection including laparoscopic and robotic liver resection is a rapidly developing field withthe greatest potential. However, the spatial disorientation is one of the biggest issues that would increase the risk of dangerousbleeding and bile leakage. To overcome this issue, it is of crucial importance to standardize anatomical liver resection with extrahepaticGlissonean pedicle-first approach and to use advanced 3D liver simulation software that can visualize the Glissoneansystem.Methods: We proposed a novel concept of liver anatomy based on Laennec’s capsule that can standardize the extrahepaticGlissonean pedicle approach. Whereas Synapse 3D® is the first simulation software to use face recognition technology for clinical3D simulation and visualization of the Glissonean system are available since version 4.4.Results: Owing to the novel concept of liver anatomy, anatomical liver resection with extrahepatic Glissonean pedicle-first approachwas standardized and target area was well recognized prior to parenchymal dissection with minimal bleeding and bileleakage from the resecting plane. Preoperative 3D simulation and intraoperative navigation contributed to perform systematicanatomical liver resection without spatial disorientation even for the cases with anatomical abnormalities such as right-sidedligamentum teres.Conclusion: Minimally invasive liver resection including laparoscopic and robotic resection became safe and curable procedureswith the novel concept of liver anatomy and advanced 3D liver simulation.
Atsushi Yoshimoto,Akio Kato,Hirokazu Yanagihara 강원대학교 산림과학연구소 2008 Journal of Forest Science Vol.24 No.3
We conduct economic analysis of the snow damage on sugi (Cryptomeria japonica) forest stands in Toyama Prefecture, Japan. We utilize a single tree and distant independent growth simulator called “Silv-Forest.” With this growth simulator, we developed an optimization model by dynamic programming, called DP-Silv (Dynamic Programming Silv-Forest). The MSPATH (multiple stage projection alternative technique) algorithm was embedded as a searching algorithm of dynamic programming. The height / DBH ratio was used to constrain the thinning regime for snow damage protection. The optimal rotation age turned out to be 65 years for the non-restricted case, while it was 50 years for the restricted case. The difference in NPV of these two cases as the induced costs ranged from 179,867 to 1,910,713yen/ha over the rotation age of 20 to 75 years. Under the optimal rotation of 65 years, the cost became 914,226 yen/ha. The estimated annual payment based on the difference in NPV, was from 9,869 yen/ha/yr to 85,900 yen/ha/yr. All in all, 10,000 yen/ha/yr to 20,000 yen/ha/yr seems to cover the payment from the rotation age of 35 to 75 years.