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Takashi Takata,Yasusei Kudo,Hiroko Hatano,kuko Ogawa,Samadarani Siriwardena,Shoïro Kitajima,Masae Kitagawa,Mutsumi Miyauchi 대한구강악안면병리학회 2007 대한구강악안면병리학회지 Vol.31 No.2
Oral squamous cel1 carcinoma(OSCC) is the most common malignancy of head neck region. Typically OSCC cells s how persist ent invasion that frequently leads to local recurrence and distant lymphatic metastasls However, molecular mechanisms of invasion of OSCC remain poorly understood. Her e we identifi ed periostin, interferon induced transmembrane protein l (IF1TM1) and wingless-type MMTV integration site family, member 5B(WNT5B) , as invasion promoting molecules in OSCC by comparing gene expression profiles between a parent OSCC cell line(MSCC-l) and its highly invasive clone(MSCC-1nvl). Overexpression of periostin, IFITMl and WNT5B mRNAs were confirmed in MSCC-1nvl by RT-PCR. Transfection of these molecules promoted invasion of OSCC cells Moreover , siRNA t r eatment of these molecules suppressed invasion of cancer cells in vitro I nter estingly, Periostin, 1F1TMl and WNT5B were highly expressed in OSCCs in comparison with nonnal tissues. 1n an orthotopic mouse model of OSCC, periostin-overexpressing cells metas tasized spontaneously to cervical lymph nodes and t o t he lung through their aggressive invasiveness. These findings suggest that peri ostin, IFITMl and WNT5B play important roles for invasion and of OSCC and can be prognostic markers and therapeutic t argets of OSCC.
Two Inonotus species newly found in Japan, Inonotus formosanus and Inonotus nodulosus
Sho-ichi Tsujiyama 한국버섯학회 2011 한국버섯학회지 Vol.9 No.3
Two Inonotus species newly found in Japan were described. I. formosanus T.T. Chang & W.N. Chou was identified with the following characters; thin basidocarps with hispid when young and later the erect hyphae agglutinate to scrupose tuft, pore surface light yellow to rusty brown later, absence of setal hyhpae, ventricose hymenial setae, and small ellipsoid, hyaline to yellowish basidiospores. I. nodulosus (Fr.) P. Karst. was identified with the following characters; basidocarps nodulose, wart-like shape, scrupose to warted by agglutinated hayphae, margin up to 5 mm, pore surface cinnamon to rusty brown when dry with a whitish or silvery shine, absence of setal hyphae, acute straight hymenical setae, ellipsoid to subglobose basidiospores, which are weakly dextrinoid in Melzer’s reagent.
Development of Aerial Photographing System with Throwing Device for Disaster Information Gathering
Sho Katayama,Takashi Takimoto 제어로봇시스템학회 2014 제어로봇시스템학회 국제학술대회 논문집 Vol.2014 No.10
Recently, as a disaster information gathering tool, aerial photographing devices which gather photos and videos from the air get much attention. Especially, the aerial photographing method at low altitude below 15 meters is important to the disaster information gathering. As these devices, there are helium gas balloons, radio-controlled helicopters, and pole/crane vehicles. However, these devices have risks that trigger accidental contact and crackup by air stream at low airspace. In order to improve the safety of these devices, in this paper, we have developed a throw type photographing system which consists of an automatically photographing device packaged in a plastic capsule egg and a launching device. The attitude of the photographing device is controlled by the microcomputer with acceleration, gyro and compass sensors. These sensors also used to estimate the time when the device reaches the top of air. Moreover, we have shown the effectiveness of the proposed system by shooting aerial photographs in practice.
Development of Throw Type Automatic Photographing Device
Sho Katayama,Takashi Takimoto 제어로봇시스템학회 2013 제어로봇시스템학회 국제학술대회 논문집 Vol.2013 No.10
In disaster, it is important to photographs and video from the sky. Aerial photographing devices such as helium gas balloons and helicopters have ever been used for information gathering activities at that time. However, these devices have a high risk because they are strongly affected by air stream at low airspace. As the new photographing device improving the above problem, in this paper, we have developed a throw type photographing device packaged in a plastic capsule egg, and proposed an automatic photographing system. The photographing device is controlled by the control circuit with an accelerometer and takes a photograph when it reaches the top of air. The accelerometer is used to calculate the time that the device until photographing. Moreover, we take aerial photographs in practice and show the effectiveness of the proposed system.
Numerical Analysis of Drag and Heating Reduction by Directed Energy Air Spike
Sho Sasamoto,Etsuo Morishita 한국항공우주학회 2008 한국항공우주학회 학술발표회 논문집 Vol.- No.-
It is well known to the aerospace engineering community that aerodynamic drag and heating are extremely critical issues at hyper velocities. Directed Energy Air Spike (DEAS) is a method to deposit a small amount of energy in the flow ahead of a blunt body and to reduce the drag and the heating. The hypersonic flow at M=7 past the blunt body is investigated numerically. The axis-symmetric bodies are studied. The compressible Navier-Stokes Equations are solved by the AUSM-DV scheme. The effects of heat addition and its location are of a particular interest in the present calculation. And the computational results show that optimum amount and location of the heat addition could be determined aerodynamically. The present calculations also confirm that DEAS is a very effective method for the drag and heat transfer reduction at hypersonic speeds.