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Nakamura Takako,Nakao Asuka,Watanabe Minami,Ueda Kinji,Matsuda Toshihiko,Matsumoto Seiji,Yamaguchi Toshiharu,Haikata Masaho,Kaneko Asuka,Shirota Koji,Sasaki Azusa,Okamoto Shigehisa,Nakamura Yasushi 한국식품연구원 2022 Journal of Ethnic Foods Vol.9 No.-
Introduction: This study aimed to review the farming activity and the administrative measure to successfully increase the distribution of heirloom vegetable “mizuna” nationwide by examining the paradigm shift in the use of its young less-branched form for salad. We also discussed that breeding programs of the young form ironically resulted in reduction the flavor and the antimutagenicity of this vegetable. Methods: Through hearing survey, we explored reasons for the successful nationwide distribution of heirloom vegetable, mizuna. Through chemical analysis, the fragrant ingredients in mizuna, their antimutagenicity and the changes in their amount for one year were determined. Results and discussion: The primary factor for commencing the distribution of mizuna includes the new idea of using young less-branched form of mizuna as salad ingredient, which has been recognized by most who were involved in promoting the distribution of mizuna among farmers, distributors, and employees of agricultural extension section at Kyoto Prefecture office. The secondary factor is the fact that the primary factor coincides on a time axis with other two factors: the occurrence of the boom of Kyoto’s heirloom vegetables and the Vegetable Management Stabilization Project found as a measure of Kyoto Prefecture. We determined three fragrant compounds in mizuna, 3-butenyl isothiocyanate, 3-phenylpropionitrile, and phenylethyl isothiocyanate, of which their antimutagenic effects were also identified. Those amounts were highest at the best harvest season called ‘Syun’ in the past because of the cold temperature of Japanese winter in traditional open-field cultivation. Conclusion: It implied that the successful nationwide distribution of mizuna resulted from the administrative measures based on the paradigm shift in the new use of mizuna for salad due to increase in demand of the vegetable in contemporary dishes. The traditional cultivation of mizuna might be suitable if wishing the flavor and antimutagenicity at the best harvest season ‘Syun’.
Di-Higgs enhancement by neutral scalar as probe of new colored sector
Nakamura, Koji,Nishiwaki, Kenji,Oda, Kin-ya,Park, Seong Chan,Yamamoto, Yasuhiro Springer-Verlag 2017 European Physical Journal C Vol.77 No.5
<P>We study a class of models in which the Higgs pair production is enhanced at hadron colliders by an extra neutral scalar. The scalar particle is produced by the gluon fusion via a loop of new colored particles, and decays into di-Higgs through its mixing with the Standard Model Higgs. Such a colored particle can be the top/bottom partner, such as in the dilaton model, or a colored scalar which can be triplet, sextet, octet, etc., called leptoquark, diquark, coloron, etc., respectively. We examine the experimental constraints from the latest Large Hadron Collider (LHC) data, and discuss the future prospects of the LHC and the Future Circular Collider up to 100 TeV. We also point out that the 2.4 s excess in the b (b) over bar gamma gamma final state reported by the ATLAS experiment can be interpreted as the resonance of the neutral scalar at 300 GeV.</P>
Takako Nakamura,Yasushi Nakamura,Azusa Sasaki,Masami Fujii,Koji Shirota,Yutaka Mimura,Shigehisa Okamoto 한국식품연구원 2017 Journal of Ethnic Foods Vol.4 No.2
As a general background, Sabaka-daikon, one of the heirloom vegetables in Kyoto, ceased its commercial cultivation in the late 1960s at north Kyoto, leading to an extinction crisis. We review the activities of the local residents to revive the commercial cultivation of Sabaka-daikon from 2010. We also discuss the significance of the information on the health benefits of local foods in motivating local residents to protect local foods from extinction. For methodology, through field interviews of administrative members, venders, and farmers in Maizuru city, we explore reasons for the success in reviving a local heirloom vegetable, Sabaka-daikon. We also apply chemical analysis to determine individual differences in the anticarcinogenic (cancer preventive) compound, 4-methylthio-3-butenyl isothiocyanate, in Sabaka-daikon to guarantee its added health benefits. As a result, the primary factors for the revival of Sabaka-daikon in Maizuru city include the passion of farmers, measures undertaken by the local administration, and the marketing strategies of venders. The secondary factor is the fact that one primary factor (passion of farmers) coincides on a time axis with the other two factors (administrative measures and marketing strategies of venders). Wide individual differences in the anticarcinogenic compound, 4-methylthio-3-butenyl isothiocyanate, were observed, likely due to the variable genome of Sabaka-daikon. In conclusion, the results imply that the information on the health benefits of daikon contribute to motivating the local residents (i.e., passion of farmers) in protecting Sabaka-daikon from extinction. Revival of this heirloom vegetable would contribute to the diversification of local foods, and to the preservation of those foods and the cooking knowledge for future generations. As Sabaka-daikon variety has some races in variation of 4-methylthio-3-butenyl isothiocyanate production, a race with a fixed amount of 4-methylthio-3-butenyl isothiocyanate should be established to guarantee added health benefits of Sabaka-daikon.
DNA Length Dependent Photocurrent of Diketopyrrolopyrrole Aggregates Constructed with DNA
Nakamura, Mitsunobu,Tsuto, Koji,Takada, Tadao,Yamana, Kazushige Korean Society of Photoscience 2014 Rapid communication in photoscience Vol.3 No.4
Bis(2-thienyl)-diketopyrrolopyrrole having two $Zn^{II}$-cylcens (DPPCy) was synthesized. DPP-aggregates were constructed by self-organization of DPPCy and $dT_n$-DNAs. In the presence of L-ascorbic acid as an electron sacrifice reagent, the DPP aggregates immobilized on a gold electrode exhibit good anodic photocurrent responses as well as cathodic photocurrent responses in the presence of methyl viologen. The anodic photocurrent responses depend on the DNA lengths because of the formation of uniform DPP-aggregates corresponding to the DNA lengths. The present results show that photocurrent responses of the DPP-aggregates can be controlled by DNA lengths and electron sacrifice reagents.
Koji Akeda,Kohshi Ohishi,Koichi Masuda,Won C. Bae,Norihiko Takegami,Junichi Yamada,Tomoki Nakamura,Toshihiko Sakakibara,Yuichi Kasai,Akihiro Sudo 대한척추외과학회 2017 Asian Spine Journal Vol.11 No.3
Study Design: Preliminary clinical trial. Purpose: To determine the safety and initial efficacy of intradiscal injection of autologous platelet-rich plasma (PRP) releasate in patients with discogenic low back pain. Overview of Literature: PRP, which is comprised of autologous growth factors and cytokines, has been widely used in the clinical setting for tissue regeneration and repair. PRP has been shown in vitro and in vivo to potentially stimulate intervertebral disc matrix metabolism. Methods: Inclusion criteria for this study included chronic low back pain without leg pain for more than 3 months; one or more lumbar discs (L3/L4 to L5/S1) with evidence of degeneration, as indicated via magnetic resonance imaging (MRI); and at least one symptomatic disc, confirmed using standardized provocative discography. PRP releasate, isolated from clotted PRP, was injected into the center of the nucleus pulposus. Outcome measures included the use of a visual analog scale (VAS) and the Roland-Morris Disability Questionnaire (RDQ), as well as X-ray and MRI (T2-quantification). Results: Data were analyzed from 14 patients (8 men and 6 women; mean age, 33.8 years). The average follow-up period was 10 months. Following treatment, no patient experienced adverse events or significant narrowing of disc height. The mean pain scores before treatment (VAS, 7.5±1.3; RDQ, 12.6±4.1) were significantly decreased at one month, and this was generally sustained throughout the observation period (6 months after treatment: VAS, 3.2±2.4, RDQ; 3.6±4.5 and 12 months: VAS, 2.9±2.8; RDQ, 2.8±3.9; p <0.01, respectively). The mean T2 values did not significantly change after treatment. Conclusions: We demonstrated that intradiscal injection of autologous PRP releasate in patients with low back pain was safe, with no adverse events observed during follow-up. Future randomized controlled clinical studies should be performed to systematically evaluate the effects of this therapy.
Role of Interfacial B Impurity in the Magnetocrystalline Anisotropy at MgO/Fe Interface
Koji Hotta,Kohji Nakamura,Toru Akiyama,Tomonori Ito 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.63 No.3
The structural stability and the magnetocrystalline anisotropy (MCA) at MgO/Fe(001) interfaceswith the incorporation of interfacial B atoms were investigated by using first-principles calculations. Total energy calculations predicted that the B atoms favored segregating to the interface. Thecalculated MCA energy for an ideal abrupt MgO/Fe interface (with no B atom) indicated that themagnetization strongly favored pointing along the perpendicular direction. However, when B atomswere incorporated at the MgO/Fe interfaces, the perpendicular MCA almost disappeared.
Low Dose Ultraviolet Al (340-400 nm) Phototherapy for Erythrodermic Cutaneous T-cell Lymphoma
Uede, Koji,Hiroi, Akihisa,Nakamura, Tomoyuki,Kishi, Tomoo,Yamamoto, Yuki,Furukawa, Fukumi Korean Society of Photoscience 2002 Journal of Photosciences Vol.9 No.2
Three patients suffering from widespread erythrodermic cutaneous T-cell lymphoma were treated with low-dose UVAI phototherapy with a single dose of 20 - 30J/$cm^2$, resulting in cumulative doses of 520 - 1890 J/$cm^2$. Two patients showed complete responses, while other had a partial improvement.