홋카이도 남부 Warm Core Ring의 탄성파 반사법 영상화

( Mikiya Yamashita ),( Kanako Yokota ),( Yoshio Fukao ),( Shuichi Kodaira1 ),( Seiichi Miura1 ),( Katsuro Katsumata ) 한국지구물리·물리탐사학회 2011 지구물리와 물리탐사 Vol.14 No.1

홋카이도 남쪽 태평양 판의 심부 지각 구조를 규명하기 위해 다중채널 탄성파 반사법 탐사가 2009년에 수행되었다. 탐사 측선은 250km 넓이의 WCR을 가로지르며, 쿠로시오 속류에 의해 생성된 난류가 흐르는 지역에 위치한다. 본 논문에서는 다중채널 탄성파 반사법 자료를 사용하여 WCR의 세부 구조를 규명하고자 하였다. 탐사 측선은 2개의 프로파일로 구성되는데, 그 중 하나는 송신원 간격이 200미터이고, 다른 하나는 50미터 간격이다. 밀집된 송신원을 갖는 측선의 기록자료가 성긴 송신원 측선의 기록자료보다 배경 잡음이 훨씬 많은 것을 관찰할 수 있다. 이 잡음의 발생원은 이전 송신원으로부터 발생한 해수면과 해저면, 그리고 지하 불연속면 사이의 음향 다중반향음으로 확인되었다. 음파 속도 정보가 동시에 수행하는 온도 측정으로부터 구해질 수 있다면 중합전 구조보정 기술을 통해 배경잡음에 묻혀 있는 신호를 효과적으로 강조할 수 있음을 알 수 있었다. WCR은 음향학적으로 볼 때 해양쪽으로 급경사(~2°)이고 해변쪽으로 완경사(~1°)인 오목한 반사면들의 집합체라고 할 수 있다. WCR 내부에서 30km 넓이의 반사면들로 둘러싸인 렌즈 형태의 구조를 확인할 수 있었다. A multi-channel seismic reflection (MCS) survey was conducted in 2009 to explore the deep crustal structure of the Pacific Plate south of Hokkaido. The survey line happened to traverse a 250-km-wide Warm Core Ring (WCR), a current eddy that had been generated by the Kuroshio Extension. We attempted to use these MCS data to delineate the WCR fine structure. The survey line consists of two profiles: one with a shot interval of 200mand the other with a shot interval of 50m. Records from the denser shot point line show much higher background noise than the records from the sparser shot point line. We identified the origin of this noise as acoustic reverberations between the sea surface, seafloor and subsurface discontinuities, from previous shots. Results showed that a prestack migration technique could enhance the signal buried in this background noise efficiently, if the sound speed information acquired from concurrent temperature measurements is available. The WCR is acoustically an assemblage of concave reflectors dipping inward, with steeper slopes (~2°) on the ocean side and gentler slopes (~1°) on the coastal side. Within the WCR, we recognised a 30-km-wide lens-shaped structure with reflectors on the perimeter.

HYERS-ULAM-RASSIAS STABILITY OF THE BANACH SPACE VALUED LINEAR DIFFERENTIAL EQUATIONS y′ = λy

Miura, Takeshi Miura,Jung, Soon-Mo,Takahasi, Sin-Ei Korean Mathematical Society 2004 대한수학회지 Vol.41 No.6

The aim of this paper is to prove the stability in the sense of Hyers-Ulam- Rassias of the Banach space valued differentialequation y' = λy, where λ is a complex constant. That is, suppose f is a Banach space valued strongly differentiable function on an open interval. If f is an approximate solution of the equation y' = λy, then there exists an exact solution of the equation near to f.

SIZ1-mediated sumoylation of ICE1 controls CBF3/DREB1A expression and freezing tolerance in Arabidopsis.

Miura, Kenji,Jin, Jing Bo,Lee, Jiyoung,Yoo, Chan Yul,Stirm, Vicki,Miura, Tomoko,Ashworth, Edward N,Bressan, Ray A,Yun, Dae-Jin,Hasegawa, Paul M Americ 2007 The Plant cell Vol.19 No.4

<P>SIZ1 is a SUMO E3 ligase that facilitates conjugation of SUMO to protein substrates. siz1-2 and siz1-3 T-DNA insertion alleles that caused freezing and chilling sensitivities were complemented genetically by expressing SIZ1, indicating that the SIZ1 is a controller of low temperature adaptation in plants. Cold-induced expression of CBF/DREB1, particularly of CBF3/DREB1A, and of the regulon genes was repressed by siz1. siz1 did not affect expression of ICE1, which encodes a MYC transcription factor that is a controller of CBF3/DREB1A. A K393R substitution in ICE1 [ICE1(K393R)] blocked SIZ1-mediated sumoylation in vitro and in protoplasts identifying the K393 residue as the principal site of SUMO conjugation. SIZ1-dependent sumoylation of ICE1 in protoplasts was moderately induced by cold. Sumoylation of recombinant ICE1 reduced polyubiquitination of the protein in vitro. ICE1(K393R) expression in wild-type plants repressed cold-induced CBF3/DREB1A expression and increased freezing sensitivity. Furthermore, expression of ICE1(K393R) induced transcript accumulation of MYB15, which encodes a MYB transcription factor that is a negative regulator of CBF/DREB1. SIZ1-dependent sumoylation of ICE1 may activate and/or stabilize the protein, facilitating expression of CBF3/DREB1A and repression of MYB15, leading to low temperature tolerance.</P>

The Arabidopsis SUMO E3 ligase SIZ1 controls phosphate deficiency responses.

Miura, Kenji,Rus, Ana,Sharkhuu, Altanbadralt,Yokoi, Shuji,Karthikeyan, Athikkattuvalasu S,Raghothama, Kashchandra G,Baek, Dongwon,Koo, Yoon Duck,Jin, Jing Bo,Bressan, Ray A,Yun, Dae-Jin,Hasegawa, Paul National Academy of Sciences 2005 PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF Vol.102 No.21

<P>Plants sense phosphate (Pi) deficiency and initiate signaling that controls adaptive responses necessary for Pi acquisition. Herein, evidence establishes that AtSIZ1 is a plant small ubiquitin-like modifier (SUMO) E3 ligase and is a focal controller of Pi starvation-dependent responses. T-DNA insertional mutated alleles of AtSIZ1 (At5g60410) cause Arabidopsis to exhibit exaggerated prototypical Pi starvation responses, including cessation of primary root growth, extensive lateral root and root hair development, increase in root/shoot mass ratio, and greater anthocyanin accumulation, even though intracellular Pi levels in siz1 plants were similar to wild type. AtSIZ1 has SUMO E3 ligase activity in vitro, and immunoblot analysis revealed that the protein sumoylation profile is impaired in siz1 plants. AtSIZ1-GFP was localized to nuclear foci. Steadystate transcript abundances of Pi starvation-responsive genes AtPT2, AtPS2, and AtPS3 were moderate but clearly greater in siz1 seedlings than in wild type, where Pi is sufficient. Pi starvation induced the expression of these genes to the same extent in siz1 and wild-type seedlings. However, two other Pi starvation-responsive genes, AtIPS1 and AtRNS1, are induced more slowly in siz1 seedlings by Pi limitation. PHR1, a MYB transcriptional activator of AtIPS1 and AtRNS1, is an AtSIZ1 sumoylation target. These results indicate that AtSIZ1 is a SUMO E3 ligase and that sumoylation is a control mechanism that acts both negatively and positively on different Pi deficiency responses.</P>

Use of Movies for Young English Language Learners in School Education

Miura. Hiroko 영상영어교육학회 2015 영상영어교육 (STEM journal) Vol.16 No.1

The aim of this study is to examine how movies can be used for young English language learners in Japanese school education. With public elementary schools as the target, teaching materials for English, especially DVDs of movies, are the focus. Teachers currently receive materials based on a supplementary textbook from the Ministry of Education, Culture, Sports, Science and Technology (MEXT). Among the materials, CDs are extensively used in classes but only 23.1 percent of teachers report using the DVDs. In this paper, Japanese educational settings will be described to establish an understanding of the English teaching environment. Next, ways of using movies effectively will be investigated and examples of how to conduct classes using specific movies presented. All movies chosen contained children in the same age range of the target students. Movies can be used to teach proper behavior, recall words that students have already learned, deal with moral education and learn classroom English. Teachers can adjust the difficulty of tasks to their students’ language level. Although excellent materials for language classes, finding appropriate movies that match lesson aims remains difficult. To solve this problem, teacher collaboration is necessary to create a list of movies for teaching specific lessons in the elementary school context.

Development of High-Performance Nox Sensors Based on Solid Electrolytes

MIURA, Norio 경북대학교 센서기술연구소 1998 센서技術學術大會論文集 Vol.9 No.1

Three types of high-performance solid-electrolyte devices for detecting NO_(x) in the combustion exhausts or in ambient environments were proposed and investigated. First, a mixed-potential type device for the selective detection of NO_(x) was designed by using stabilized zirconia and oxide electrode. The mixed oxide, CdCr_(2)O_(4), was found to be best suited for the sensing electrode among the tested oxides. The obtained device gave rapid and selective responses to NO_(x) in air at 550°C. The sensing mechanism of the sensor was confirmed to involve a mixed potential at the oxide electrode. Secondly, a zirconia-based device using oxide electrode was developed for amperometric detection of NO at high temperature. The obtained CdCr_(2)O_(4)-attached device showed quick and selective response to NO at 500°C. Lastly, a novel solid-state amperometric sensor for NO_(2) measurements was developed by combining the Na^(+)conductor (NASICON) based device with the NaNO_(2) layer which was deposited on the counter electrode. The current response was linear to the NO_(2) concentration in the range 10 ppb - 1 ppm at 150°C. The NO_(2) sensitivity was hardly or only slightly affected by variations in the concentration of coexistent CO_(2), H_(2)O or O_(2).

Successful Use of the Hybrid Assistive Limb for Care Support to Reduce Lumbar Load in a Simulated Patient Transfer

Miura Kousei,Kadone Hideki,Abe Tetsuya,Koda Masao,Funayama Toru,Noguchi Hiroshi,Kumagai Hiroshi,Nagashima Katsuya,Mataki Kentaro,Shibao Yosuke,Sato Kosuke,Kawamoto Hiroaki,Sankai Yoshiyuki,Yamazaki Ma 대한척추외과학회 2021 Asian Spine Journal Vol.15 No.1

Study Design: Prospective experimental study in humans.Purpose: To determine whether the hybrid assistive limb (HAL) for Care Support can reduce lumbar load during a patient transfer.Overview of Literature: The prevalence of work-related low back pain (LBP) among nurses is high. In particular, transferring patients poses a high risk for LBP due to the large lumbar load. Attempts to reduce the lumbar load are crucial to avoid the risk of LBP. Therefore, we investigated the effects of the HAL for Care Support.Methods: Nineteen volunteers (16 men, three women) lifted a 60-kg doll from a seated position to a standing position. The first transfer was performed without the HAL for Care Support, and the second was performed with the HAL for Care Support assistive robot. We evaluated transfer performance, the visual analog scale (VAS) score for lumbar fatigue, and electromyogram analyses of the trunk and hip.Results: Four participants (two men, two women) succeeded with the HAL for Care Support even though they were unable to perform the task without it. The mean lumbar fatigue VAS score for all participants without the HAL for Care Support was 62 mm, while that with it was 43 mm. With lumbar assistance from the HAL for Care Support, subjective lumbar fatigue during the transfer decreased significantly. A power analysis indicated adequate statistical power to detect a difference in the VAS score for lumbar fatigue (0.99). The activity of the left gluteus maximus alone increased significantly during transfers with the HAL for Care Support. No adverse events occurred during use of the HAL for Care Support for transfers.Conclusions: The HAL for Care Support was able to reduce lumbar load in a simulated patient transfer.

A New PIM Joining Process

Miura, Hideshi The Korean Powder Metallurgy Institute 2002 한국분말재료학회지 (KPMI) Vol.9 No.4

A new PIM in-process joining technique has been developed for more complicated and functional PIM components by application of the exuded wax from the green compacts during solvent debinding step. At first, various stainless steels and iron compacts with rectangular shape were combined, and the joining behaviors and properties were investigated by shear and tensile test, and microscopic observation. Subsequently, perfect joined three pieces of thin and hollow compacts were obtained for the combination of same and different stainless steels, and it was difficult to join the iron and stainless steel compacts in hydrogen atmosphere because of the different starting temperature of shrinkage. However, pretty good joined iron and stainless steel compacts were obtained by consideration of particle size and vacuum atmosphere. Finally, for the combination of ferro-silicon and austenitic stainless steel compacts, high functionality (magnetic (1.60Tes1a) & non-magnetic) and perfect joint were obtained.

A perturbation of ring derivations on Banach algebras

Miura, Takeshi,Hirasawa, Go,Takahasi, Sin-Ei Elsevier 2006 Journal of mathematical analysis and applications Vol.319 No.2

<P><B>Abstract</B></P><P>Suppose <I>A</I> is a Banach algebra and suppose f:A→A is an approximate ring derivation in the sense of Hyers–Ulam–Rassias. This stability phenomenon was introduced for the first time in the subject of functional equations by Th.M. Rassias [Th.M. Rassias, On the stability of the linear mapping in Banach spaces, Proc. Amer. Math. Soc. 72 (1978) 297–300]. If <I>A</I> has an approximate identity, or if <I>A</I> is semisimple and commutative, then we prove that <I>f</I> is an exact ring derivation.</P>

Establishment of Laser Sintering Technique for Titanium Powder

Miura Hideshi,Takemasu Teruie,Uemura Makoto,Otsu Masaaki 한국분말야금학회 2006 한국분말야금학회 학술대회논문집 Vol.2006 No.1

This paper investigates the characteristic of single-layered and multi-layered compacts made by selective laser sintering using titanium powder (TILOP45 and TILOP150, Sumitomo Titanium Corp.) There were few defects in smooth surface of laser sintered specimen in vacuum as compared to the laser sintered specimen in argon. Maximum tensile strength of singlelayered compact was about 200MPa. Multi-layered compacts show the density of around 75% and the adhesive bonding was not observed between layers, resulted in 70MPa of maximum bending strength and 50MPa of maximum tensile strength.