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Kunihiro Ishida,Masaaki Yamanaka,Norihiko Morinaga 대한전자공학회 2009 ITC-CSCC :International Technical Conference on Ci Vol.2009 No.7
This paper investigates three-dimensional (3D) radio radiation suppression performance of adaptive array antenna (AAA) when horizontal direction information of radio suppression is only available for the directivity controlling. In the investigation, 3D directivity characteristic of such antenna directivity is analyzed using an antenna directivity control technique that has been proposed by the authors. Also, a typical indoor propagation characteristic is modeled using the ray-tracing method. Then with the analyzed antenna directivity and the indoor propagation model, the radio radiation suppression performance of the AAA in the vertical direction is demonstrated by computer simulations. With the simulation results the authors confirmed that although the radio radiation suppression performance degrades in the vertical direction, it still shows sufficient suppression performance in the indoor wireless communication environments.
Kunihiro SUZUKI,Yoko TADA,Yuji KATAOKA,Tsutomu NAGAYAMA 대한전자공학회 2009 Journal of semiconductor technology and science Vol.9 No.1
Monte Carlo simulation is widely used for predicting ion implantation profiles in amorphous targets. Here, we compared Monte Carlo simulation results with a vast database of ion implantation secondary ion mass spectrometry (SIMS), and showed that the Monte Carlo data sometimes deviated from the experimental data. We modified the electron stopping power model, calibrated its parameters, and reproduced most of the database. We also demonstrated that Monte Carlo simulation can accurately predict profiles in a low energy range of around 1 keV once it is calibrated in the higher energy region.
( Kunihiro Hayakawa ),( Keigo Ikeda ),( Maki Fujishiro ),( Yuko Yoshida ),( Takuya Hirai ),( Hiroshi Tsushima ),( Tomoko Miyashita ),( Shinji Morimoto ),( Yasushi Suga ),( Kenji Takamori ),( Hideoki O 대한피부과학회 2018 Annals of Dermatology Vol.30 No.1
Background: Connective tissue growth factor (CTGF) is a multifunctional cellular protein and playing a role as a central mediator in tissue remodeling and fibrosis. The physiological function of CTGF in psoriasis is unknown. Objective: The purpose of this study was to investigate the function of CTGF in psoriasis using the established imiquimod (IMQ)- induced psoriasis murine model and psoriasis patients. Methods: Anti-CTGF monoclonal antibody was applied to IMQ induced psoriasis mice and those skin were clinically, pathologically and immunologically analyzed. Additionally, CTGF expression was analyzes using skin samples and plasma from psoriasis patients. Results: CTGF expression was observed in the dermis from both IMQ-induced psoriatic mice and psoriasis patients. CTGF inhibition using an anti-CTGF antibody slightly worsened IMQ-induced dermatitis. In addition, the increase of CTGF showed tendency to suppress the psoriatic dermatitis through inhibition of suprabasal cells proliferation and macrophage infiltration in the skin. CTGF was also detected significantly higher in plasma from psoriasis patients comparing with healthy control. Conclusion: Our findings suggest that CTGF could contribute to the healing rather than the worsening of psoriasis skin lesions. (Ann Dermatol 30(1) 47∼53, 2018)
Kunihiro Oyama,Masato Kanzaki,Mitsuko Kondo,Hideyuki Maeda,Kei Sakamoto,Tamami Isaka,Jun Tamaoki,Takamasa Onuki 대한흉부외과학회 2017 Journal of Chest Surgery (J Chest Surg) Vol.50 No.3
Background: To improve postoperative outcomes associated with interstitial pneumonia (IP) in patients with lung c ancer, t he m anagement of t he p ostoperative a cute e xacerbation of I P (PAEIP) was investigated. Methods: Patients with primary lung cancer were considered to be at risk for PAEIP (possible PAEIP) based on a preoperative evaluation. The early phase of this study was from January 2001 to December 2008, and the late phase was from January 2009 to December 2014. In the early phase, chest computed tomography (CT) was performed for patients for whom PAEIP was suspected based on their symptoms, whereas in the late p hase, chest CT w as r outinely p erformed w ithin a few days p ostoperatively. The n umbers o f possible PAEIP cases, actual PAEIP cases, and deaths within 90 days due to PAEIP were compared between both phases. Results: In the early and late phases, surgery was performed in 712 and 617 patients, 31 and 72 possible PAEIP cases were observed, nine and 12 actual PAEIP cases occurred, and the mean interval from the detection of PAEIP to starting treatment was 7.3±2.3 and 5.0±1.8 days, respectively. Five patients died in the early phase, and one patient died in the late phase. Significantly fewer PAEIP-related deaths were observed in the late phase (p<0.05). Conclusion: Identifying patients at risk for PAEIP by routine postoperative CT examinations led to the early diagnosis and treatment of PAEIP, resulting in the reduction of PAEIP-related mortality.
Kunihiro SUZUKI,Yoko TADA,Yuji KATAOKA,Tsutomu NAGAYAMA 대한전자공학회 2009 Journal of semiconductor technology and science Vol.8 No.1
Monte Carlo simulation is widely used for predicting ion implantation profiles in amorphous targets. Here, we compared Monte Carlo simulation results with a vast database of ion implantation secondary ion mass spectrometry (SIMS), and showed that the Monte Carlo data sometimes deviated from the experimental data. We modified the electron stopping power model, calibrated its parameters, and reproduced most of the database. We also demonstrated that Monte Carlo simulation can accurately predict profiles in a low energy range of around 1 keV once it is calibrated in the higher energy region.
Kunihiro SUZUKI,Shuichi KOJIMA 대한전자공학회 2010 Journal of semiconductor technology and science Vol.10 No.4
We proposed a tail function parameter extraction procedure for the establishment of a robust ion implantation database. We showed that, for the expression of ion implantation profiles, there are many local minimum values set for the third and fourth moment parameters of r and β for the Pearson function that comprises the standard dual Pearson and tail functions. We proposed the use of a joined tail function as a mediate function to extract r and β, and demonstrated that this enables us to extract the parameters uniquely. Other parameters associated with channeling phenomena can also be simply and uniquely extracted by our procedure.