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Institution

Utsunomiya University

EducationUtsunomiya, Japan
About: Utsunomiya University is a education organization based out in Utsunomiya, Japan. It is known for research contribution in the topics: Laser & Holography. The organization has 4139 authors who have published 6812 publications receiving 91975 citations. The organization is also known as: Utsunomiya daigaku.


Papers
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Proceedings ArticleDOI
22 Dec 2008
TL;DR: Fiber fuse phenomenon in hole-assisted fibers (HAFs) was investigated in this article, where it was shown that fiber fuse propagation can be stopped as designing suitable position of air holes in HAF.
Abstract: Fiber fuse phenomenon in hole-assisted fibers (HAFs) was investigated. Fiber fuse propagation can be stopped as designing suitable position of air holes in HAF.

34 citations

Journal ArticleDOI
TL;DR: Genetic, genomic, transcriptional, silencing, and biochemical precursor analyses performed in combination provide a solid ground for the conclusion that CaKR1 is involved in capsaicinoid biosynthesis and that its disruption results in a loss of pungency.
Abstract: A putative ketoacyl-ACP reductase (CaKR1) that was not previously known to be associated with pungency of Capsicum was identified from map-based cloning and functional characterization. The pungency of chili pepper fruits is due to the presence of capsaicinoids, which are synthesized through the convergence of the phenylpropanoid and branched-chain fatty acid pathways. The extensive, global use of pungent and non-pungent peppers underlines the importance of understanding the genetic mechanism underlying capsaicinoid biosynthesis for breeding pepper cultivars. Although Capsicum is one of the earliest domesticated plant genera, the only reported genetic causes of its loss of pungency are mutations in acyltransferase (Pun1) and putative aminotransferase (pAMT). In this study, a single recessive gene responsible for the non-pungency of pepper No.3341 (C. chinense) was identified on chromosome 10 using an F2 population derived from a cross between Habanero and No.3341. Five candidate genes were identified in the target region, within a distance of 220 kb. A candidate gene, a putative ketoacyl-ACP reductase (CaKR1), of No.3341 had an insertion of a 4.5-kb transposable element (TE) sequence in the first intron, resulting in the production of a truncated transcript missing the region coding the catalytic domain. Virus-induced gene silencing of CaKR1 in pungent peppers resulted in the decreased accumulation of capsaicinoids, a phenotype consistent with No.3341. Moreover, GC–MS analysis of 8-methyl-6-nonenoic acid, which is predicted to be synthesized during the elongation cycle of branched-chain fatty acid biosynthesis, revealed that its deficiency in No.3341. Genetic, genomic, transcriptional, silencing, and biochemical precursor analyses performed in combination provide a solid ground for the conclusion that CaKR1 is involved in capsaicinoid biosynthesis and that its disruption results in a loss of pungency.

34 citations

Journal ArticleDOI
TL;DR: In this paper, a fundamental study of the steam reforming of biogas and that derived from supercritical water gasification of glucose was conducted with a hydrogen-permeable palladium-silver membrane reactor.

34 citations

Journal ArticleDOI
TL;DR: Comparing crown and trunk allometries, root/shoot biomass allometry, and root architecture among understory saplings of seven deciduous dicotyledonous species in central Japan found that large leaves and orthotropic branches were associated with a narrow small crown and slender trunk.
Abstract: Plant allometry that is related to plant architecture and biomass allocation strongly influences a plant’s ability to grow in shaded forest understory. Some allometric traits can change with plant size. The present study compared crown and trunk allometries, root/shoot biomass allometry, and root architecture among understory saplings (0.25--5m height, except for two trees > 5 < 7 m) of seven deciduous dicotyledonous species in central Japan. Associations of the crown and trunk allometries with several plant morphological attributes were analyzed. Branch morphology (plagiotropyvs orthotropy) and life size were correlated with sapling crown and trunk allometries. Both large leaves and orthotropic branches were associated with a narrow small crown and slender trunk. The root/shoot ratio decreased rapidly with increasing plant height for saplings shorter than about 1.5 m. Less shade-tolerant species tended to have smaller root/shoot ratios for saplings taller than 1.5 m. With an increase in plant height, the branch/trunk biomass ratio decreased for saplings with plagiotropic branches but increased for saplings with orthotropic branches. Four subcanopy species (Acer distylum, Carpinus cordata, Fraxinus lanuginosa and Acanthopanax sciadophylloides) had superficial root systems; a common understory species (Sapium japonica) had a deep tap root system; and a canopy species (Magnolia obovata) and a subcanopy species (Acer tenuifolium) had heart root systems of intermediate depth. The root depth was not related to shade tolerance. Among species of the same height, the difference in fine root length can be 30-fold.

34 citations

Journal ArticleDOI
TL;DR: In this paper, the microwave response of an array of intrinsic Josephson junctions in the c-axis direction in large Bi/sub 2/Sr/Sub 2/CaCu/sub 1/O/sub 7/BSCCO single crystals was studied under the 8-10 GHz microwave irradiation.
Abstract: We have studied the microwave response of an array of intrinsic Josephson junctions in the c-axis direction in large Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub 7/ (BSCCO) single crystals indicating multiple resistive branches on the I-V characteristics. Under the 8-10 GHz microwave irradiation, they showed three types of responses depending on its power P. For relatively low P, the Shapiro steps were observed, whose voltage separations were two order magnitude larger than that calculated from /spl Delta/V=hf/2e, indicating that about one hundred intrinsic junctions in the crystal are phase-locked. For high P, two types of RF-induced steps were observed. In the case of resonance mode, the I-V curve showed the pronounced constant voltage step together with subharmonic ones. On the other hand, for off-resonance mode the broad step was observed. The voltages of these steps increased lineally with p/sup 1/2/. These results suggest that the fluxon motions in intrinsic Josephson junctions interact with external RF field. >

34 citations


Authors

Showing all 4148 results

NameH-indexPapersCitations
Kazuhito Hashimoto12078161195
Yoshinori Yamamoto8595028130
S. Uehara7860223493
Minghua Liu7467920727
Akira Fujishima7029969335
Satoshi Hasegawa6970822153
Donald A. Tryk6724025469
Hiromu Suzuki6525015241
Kunio Arai6429315022
Kazuo Suzuki6350717786
Jin Wang6019610435
James B. Reid6024611773
Richard L. Smith5930211420
Isao Kubo5830311291
Takao Yokota5724511813
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20236
202231
2021247
2020315
2019315
2018289