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Operation and Maintenance of In-Situ CO₂ Measurement System Using Unmanned Aerial Vehicles
Kohei Nomura,Hirokazu Madokoro,Takashi Chiba,Makoto Inoue,Takeshi Nagayoshi,Osamu Kiguchi,Hanwool Woo,Kazuhito Sato 제어로봇시스템학회 2019 제어로봇시스템학회 국제학술대회 논문집 Vol.2019 No.10
The aim of this study is to actualize an in-situ measurement system of greenhouse gases using a UAV. This paper presents vertical profiles of CO₂ concentration as a measurement result with operation and long-term maintenance for a periodic flight tests. For this study, a new joint part with a single structure for improving strength of the sensor mount is developed. Moreover, routine maintenance to replace a router and periodic regulation of the analyzer is provided. After updating flight altitude permission over 150 m, we conducted flight tests up to 500 m. We compare individual linear correction and liner regression applied for vertical profiles of CO₂ concentration. We address that correction using linear regression has advantage to reduce burden for in-situ measurement.
고도산화공법(AOP)에 의한 침출수 중 다이옥신류의 처리
( Jiro Sato ),( Kohei Miki ),( Eiichi Nishikawa ) 한국폐기물자원순환학회 2002 APLAS Vol.2002 No.2
본 연구는 자외선 방법(UV/ozone method)에 기반한 오존화로써, AOPs 공법의 일종이며, 실험 결과 침출수 중 다이옥신류의 처리에 효과를 나타내었다. UV/ozone을 이용한 오존의 파괴능 및 오존 파괴율의 영향을 실험하였으며, 다이옥신 제거시 공존유기물질의 농도를 평가하였다. 또한 본 연구의 결과로써 pre-ozonel, 활성탄, UV/ozone 결합 공법의 이용으로 침출수 내 다이옥신을 높은 효율로 제거할 수 있음을 확인하였다. This study focused on the ozonation under UV radiation method (UV/ozone method), which is one of the advanced oxidation process (AOP) methods, and experiments on the effects of treatment of dioxins in leachate were conducted. We have examined the consumptive applications of the ozone used in UV/ozone treatment and the influence of the ozone consumption rate, and evaluated concentration of concomitant organic matter on the dioxin removal. This study also confirmed that the use of pre-ozone, activated carbon, and UV/ozone process in combination can remove dioxins in leachate at a high rate.
TREATMENT OF DIOXINS IN LEACHATE BY AOP METHOD (UV/OZONE METHOD)
( Jiro Sato ),( Kohei Miki ),( Eiichi Nishikawa ) 한국폐기물자원순환학회 2002 APLAS Vol.2002 No.1
This study focused on the ozonation under UV radiation method (UV/ozone method), which is one of the advanced oxidation process (AOP) methods, and experiments on the effects of treatment of dioxins in leachate were conducted. We have examined the consumptive applications of the ozone used in UV/ozone treatment and the influence of the ozone consumption rate, and evaluated concentration of concomitant organic matter on the dioxin removal. This study also confirmed that the use of pre-ozone, activated carbon, and UV/ozone process in combination can remove dioxins in leachate at a high rate.
A Prototype Virtual Network Embedding System using OpenStack
Yukinobu Fukushima,Kohei Sato,Itsuho Goda,Heung-Gyoon Ryu,Tokumi Yokohira 대한전자공학회 2017 IEIE Transactions on Smart Processing & Computing Vol.6 No.1
Network virtualization enables us to make efficient use of resources in a physical network by embedding multiple virtual networks in the physical network. In this paper, we develop a prototype of a virtual network embedding system. Our system consists of OpenStack, which is an open source cloud service platform, and shell scripts. Because OpenStack does not provide a quality of service control function, we realize bandwidth reservation for virtual links by making use of the ingress policing function of Open vSwitch, which is a virtual switch used in OpenStack. The shell scripts in our system automatically construct the required virtual network on the physical network using the OpenStack command-line interface, and they reserve bandwidth for virtual links using the Open vSwitch command. Experimental evaluation confirms that our system constructs the requested virtual network and appropriately allocates node and link resources to it.
Photo-triggered fluorescent labelling of recombinant proteins in live cells
Jung, Deokho,Sato, Kohei,Min, Kyoungmi,Shigenaga, Akira,Jung, Juyeon,Otaka, Akira,Kwon, Youngeun The Royal Society of Chemistry 2015 Chemical communications Vol.51 No.47
<P>A method to photo-chemically trigger fluorescent labelling of proteins in live cells is developed. The approach is based on photo-caged split-intein mediated conditional protein trans-splicing reaction and enabled background-free fluorescent labelling of target proteins with the necessary spatiotemporal control.</P> <P>Graphic Abstract</P><P>A method to photo-chemically trigger fluorescent labelling of proteins in live cells is developed for background-free fluorescent labelling of target proteins with the necessary spatiotemporal control. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c5cc01067e'> </P>
( Shinya Fujie ),( Hirotoshi Ishiwatari ),( Keiko Sasaki Junya Sato ),( Hiroyuki Matsubayashi ),( Masao Yoshida ),( Sayo Ito ),( Noboru Kawata ),( Kenichiro Imai ),( Naomi Kakushima ),( Kohei Takizawa 대한간학회 2019 Gut and Liver Vol.13 No.3
Background/Aims: To compare the diagnostic yield of 20-gauge forward-bevel core biopsy needle (CBN) and 22-gauge needle for endoscopic ultrasound (EUS)-guided fine needle aspiration (FNA) of solid pancreatic masses. Methods: The use of 20-gauge CBN was prospectively evaluated for 50 patients who underwent EUS-FNA from June 2016 to December 2016. Data were compared with those obtained by a retrospective study of 50 consecutive patients who underwent EUS-FNA using standard 22-gauge needles between December 2016 and April 2017. At least two punctures were performed for each patient; the sample from the first pass was used for cytology with or without histology and that from the second pass was used for histology. Sample quantity was evaluated using the sample obtained from the second pass. Results: There was no significant difference in the diagnostic accuracy rate between the first and second passes (20-gauge CBN: 96% [48/50]; standard 22-gauge needle: 88% [44/50]). Samples >10× power fields in length were obtained from 90% (43/48) and 60% (30/50) of patients using the 20-gauge CBN and standard 22-gauge needle, respectively (p=0.01). Technical failure occurred for two patients with the 20-gauge CBN. Conclusions: Diagnostic accuracy of the 20-gauge CBN was comparable to that of the 22-gauge needle. However, two passes with the 20-gauge CBN yielded a correct diagnosis for 100% of patients when technically feasible. Moreover, the 20-gauge CBN yielded core tissue for 90% patients, which was a performance superior to that of the 22-gauge needle. (Gut Liver 2019;13:349-355)