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马斯特二阶梯试验简易运动超声心动图检测早期肺动脉高压

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中华高血压杂志 2013年第7期21卷 686-686页

作者： Suzuki k Akashi YJ Manabe M Mizukoshi k kamijima R kou S Takai M Izumo M kida k yoneyama k Omiya k Yamasaki Y Yamada H Nobuoka S Miyake F 刘莉叶鹏

早期检测肺动脉高压（pulmonaryarterialhyper—tension，PAH）十分必要，但单纯依靠人静息状态的超声心动图检测结果并不能完全确诊。该研究旨在探讨马斯特二阶梯试验简易运动超声心动图在检测早期PAH中的作用。方法：研究纳入症状较... 详细信息

早期检测肺动脉高压（pulmonaryarterialhyper—tension，PAH）十分必要，但单纯依靠人静息状态的超声心动图检测结果并不能完全确诊。该研究旨在探讨马斯特二阶梯试验简易运动超声心动图在检测早期PAH中的作用。方法：研究纳入症状较轻、世界卫生组织肺功能分级Ⅱ级，疑似早期PAH，曾行运动超声心动图和右心导管检查的结缔组织病患者52例。在行马斯特二阶梯试验前后行超声心动图检查。

关键词：运动超声心动图早期检测肺动脉高压试验前阶梯超声心动图检查世界卫生组织右心导管检查

Regulation of RIG-I-like receptor-mediated signaling:interaction between host and viral factors

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Cellular & Molecular Immunology 2021年第3期18卷 539-555页

作者： koji Onomoto kazuhide Onoguchi Mitsutoshi yoneyama Division of Molecular Immunology Medical Mycology Research CenterChiba University1-8-1InohanaChuo-kuChiba 260-8673Japan

Retinoic acid-inducible gene I(RIG-l)-like receptors(RLRs)are RNA sensor molecules that play essential roles in innate antiviral *** the three RLRs encoded by the human genome,RIG-1 and melanoma differentiation-associated gene 5,which contain N-terminal caspase recruitment domains,are activated upon the detection of viral RNAs in the cytoplasm of virus-infected *** RLRs induce downstream signaling via their interactions with mitochondrial antiviral signaling proteins and activate the production of type Ⅰ and Ⅲ interferons and inflammatory *** studies have shown that RLR-mediated signaling is regulated by interactions with endogenous RNAs and host proteins,such as those involved in stress responses and posttranslational *** RLR-mediated cytokine production is also involved in the regulation of acquired immunity,the deregulation of RLR-mediated signaling is associated with autoimmune and autoinflammatory ***,RLRmediated signaling might be involved in the aberrant cytokine production observed in coronavirus disease *** the discovery of RLRs in 2004,significant progress has been made in understanding the mechanisms underlying the activation and regulation of RLR-mediated signaling ***,we review the recent advances in the understanding of regulated RNA recognition and signal activation by RLRs,focusing on the interactions between various host and viral factors.

关键词： RIG-I-like receptors Viral infection Innate immunity Stress response

Confirming Stereochemical Structures of Strigolactones Produced by Rice and Tobacco

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Molecular Plant 2013年第1期6卷 153-163页

作者： Xiaonan Xie kaori yoneyama Takaya kisugi kenichi Uchida Seisuke Ito kohki Akiyama Hideo Hayashi Takao Yokota Takahito Nomura koichi yoneyama Weed Science Center Utsunomiya University 350 Mine-machi Utsunomiya 321-8505 Japan Department of Biosciences Faculty of Science and Technology Teikyo University 1-1 Toyosatodai Utsunomiya 320-8851 Japan Graduate School of Life and Environmental Sciences Osaka Prefecture University 1-1 Gakuen-cho Nakaku Sakai Osaka 599-8531 Japan

Major strigolactones （SLs） produced by rice （Oryza sativa L. cv. Nipponbare） and tobacco （Nicotiana tabacum L. cv. Michinoku No. 1） were purified and their stereochemical structures were determined by comparing with optically pure synthetic standards for their NMR and CD data and retention times and mass fragmentations in ESI-LC/MS and GC-MS. SLs purified from root exudates of rice plants were orobanchol, orobanchyl acetate, and ent-2＂-epi-5-deoxystr- igol. In addition to these SLs, 7-oxoorobanchyl acetate and the putative three methoxy-5~deoxystrigol isomers were detected by LC-MS/MS. The production of 7-oxoorobanchyl acetate seemed to occur in the early growth stage, as it was detected only in the root exudates collected during the first week of incubation. The root exudates of tobacco contained at least 11 SLs, including solanacol, solanacyl acetate, orobanchol, ent-2＂-epi-orobanchol, orobanchyl acetate, ent-2＇- epi-orobanchyl acetate, 5-deoxystrigol, ent-2＂-epi-5-deoxystrigol, and three isomers of putative didehydro-orobanchol whose structures remain to be clarified. Furthermore, two sorgolactone isomers but not sorgolactone were detected as minor SLs by LC-MS/MS analysis. It is intriguing to note that rice plants produced only orobanchol-type SLs, derived from ent-2＂-epi-5-deoxystrigol, but both orobanchol-type and strigol-type SLs, derived from 5-deoxystrigol were detected in tobacco plants.

关键词： germination stimulant Orobanche rice root parasitic plant Striga strigolactone tobacco.

Assessing the supercooling of fresh-cut onions at−5℃ using electrical impedance analysis

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Food Quality and Safety 2020年第2期4卷 55-58页

作者： Shoji koide Ami yoneyama Takahiro Orikasa Matsuo Uemura Faculty of Agriculture Iwate UniversityMoriokaJapan Iwate Agri-Innovation Center Iwate UniversityMoriokaJapan

We supercooled fresh-cut onion at−5℃ for 12 *** supercooling,the electric impedance properties of the samples were evaluated by electrical impedance spectroscopy over the frequency range of 42 Hz−5 *** time-temperature profiles of samples indicated that the freezing point and supercooling point were−2.3℃±0.7℃ and−6.9℃±1.0℃,*** results indicated that 34 of the 36 supercooled samples exhibited a definite circular arc in the Cole-Cole plot,which suggested that the cell membrane remained intact during *** the other two samples which did not exhibit a definite circular arc,the cell membrane had sustained serious damage during ***,there was large difference in drip loss percentage between supercooled samples exhibited a definite circular arc in the Cole-Cole plot and samples not exhibiting a definite circular *** results suggest that fresh-cut onions can be supercooled at−5℃.

关键词： supercooling fresh-cut onion electrical impedance Cole-Cole plot supercooling point

Active Fischer-Tropsch synthesis Fe-Cu-k/SiO_2 catalysts prepared by autocombustion method without a reduction step

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Journal of Energy Chemistry 2018年第2期27卷 432-438页

作者： Suthasinee Pengnarapat Peipei Ai Prasert Reubroycharoen Tharapong Vitidsant Yoshiharu yoneyama Noritatsu Tsubaki Program in Petrochemistry Faculty of ScienceChulalongkorn University Department of Applied Chemistry School of EngineeringUniversity of Toyama Department of Chemical Technology Faculty of ScienceChulalongkorn University

The purpose of this study was to prepare iron-based catalysts supported on silica by autocombustion method for directly using for Fischer-Tropsch synthesis（FTS） without a reduction step. The effect of different citric acid（CA）：iron nitrate（N） molar ratios and acid types on the FTS performance of catalysts were investigated. The CA：N molar ratios had an important influence on the formation of iron active phases and FTS activity. The iron carbide（FexC）, which is known to be one of the iron active phases, was demonstrated by the X-ray diffraction and X-ray photoelectron spectroscopy. Increasing the CA：N molar ratios up to 0.1 increased CO conversion of catalyst to 86.5%, which was then decreased markedly at higher CA：N molar ratios. An excess of CA resulted in carbon residues covering the catalyst surface and declined FTS activity. The optimal catalyst（CA：N molar ratio = 0.1） achieved the highest CO conversion when compared with other autocombustion catalysts as well as reference catalyst prepared by impregnation method, followed by a reduction step. The autocombustion method had the advantage to synthesize more efficient catalysts without a reduction step. More interestingly, iron-based FTS catalysts need induction duration at the initial stage of FTS reaction even after reduction, because metallic iron species need time to be transformed to FexC. But here, even if without reduction, FexC was formed directly by autocombustion and induction period was eliminated during FTS reaction.

关键词： Fischer-Tropsch synthesis Iron-based catalysts Autocombustion Iron carbide SiO2

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含不确定性混沌系统的模糊自适应同步

物理学报 2003年第2期52卷 292-297页

作者：岳东 Jun yoneyama 南京师范大学信息与控制工程技术研究中心南京210042 Departmant of Electronics and Electrical Engineering Aoyama Gakuin University

研究了含不确定性混沌系统的同步问题 .基于Takagi Sugeno(T S)模糊动态模型 ,给出了一个新的自适应模糊同步控制设计方法 .该方法同时适用于相同结构混沌系统的同步以及异构混沌系统的同步 .为说明问题 ,给出了Lorenz混沌系统和Rossle... 详细信息

研究了含不确定性混沌系统的同步问题 .基于Takagi Sugeno(T S)模糊动态模型 ,给出了一个新的自适应模糊同步控制设计方法 .该方法同时适用于相同结构混沌系统的同步以及异构混沌系统的同步 .为说明问题 ,给出了Lorenz混沌系统和Rossler混沌系统的同步控制设计和仿真结果 .

关键词：含不确定性混沌系统自适应模糊控制同步设计方法

Instantaneous phase-stepping interferometry based on a pixelated micro-polarizer array

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Theoretical & Applied Mechanics Letters 2016年第4期6卷 162-166页

作者： Satoru yoneyama Shuichi Arikawa Department of Mechanical Engineering Aoyama Gakuin University5-10-1 FuchinobeSagamihara 252-5258Japan

In this paper, we propose an instantaneous phase-stepping method for determining phase distribution of interference fringes utilizing a camera that is equipped with a micro-polarizer array on the sensor plane. An optical setup of polarization interferometry using a Mach-Zehnder interferometer with two polarizers is constructed. Light emerging from the interferometer is recorded using a camera that has a micro-polarizer array. This micro-polarizer array has four different optical axes. That is, an image obtained by the camera contains four types of information corresponding to four different optical axes of the polarizer. The four images separated from the image recorded by the camera are reconstructed using gray level interpolation. Subsequently, the distributions of the Stokes parameters that represent the state of polarization are calculated from the four images. The phase distribution of the interference fringe pattern produced by the Mach-Zehnder interferometer is then obtained from these Stokes parameters, The effectiveness of the proposed method is demonstrated by measuring a static carrier pattern and time-variant fringe patterns. It is emphasized that this method is applicable to time-variant phenomena because multiple exposures are unnecessary for sufficient data acquisition in the completion of the phase analysis.

关键词： Instantaneous phase-stepping method Mach-Zehnder interferometry Micro-polarizer array Polarization Fringe Crack

Strigolactones and the Regulation of Pea Symbioses in Response to Nitrate and Phosphate Deficiency

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Molecular Plant 2013年第1期6卷 76-87页

作者： Eloise Foot kaori yoneyama Cassandra J. Hugill Laura J. Quittenden James B. Reidt School of Plant Science University of Tasmania Private Bag 55 Hobart Tasmania 7001 Australia Weed Science Centre Utsunomiya University 350 Mine-machi Utsunomiya 321-8505 Japan

New roles for the recently identified group of plant hormones, the strigolactones, are currently under active investigation. One of their key roles is to regulate plant symbioses. These compounds act as a rhizosphere signal in arbuscular mycorrhizal symbioses and as a positive regulator of nodulation in legumes. The phosphorous and nitrogen status of the soil has emerged as a powerful regulator of strigolactone production. However, until now, the potential role of strigolactones in regulating mycorrhizal development and nodulation in response to nutrient deficiency has not been proven. In this paper, the role of strigolactone synthesis and response in regulating these symbioses is examined in pea （Pisum sativum L.）. Pea is well suited to this study, since there is a range of well-characterized strigolactone bio- synthesis and response mutants that is unique amongst legumes. Evidence is provided for a novel endogenous role for strigolactone response within the root during mycorrhizal development, in addition to the action of strigolactones on the fungal partner. The strigolactone response pathway that regulates mycorrhizal development also appears to dif- fer somewhat from the response pathway that regulates nodulation. Finally, studies with strigolactone-deficient pea mutants indicate that, despite strong regulation of strigolactone production by both nitrogen and phosphate, strigolac- tones are not required to regulate these symbioses in response to nutrient deficiency.

关键词： Strigolactones nodulation mycorrhizae nitrate phosphate pea.

Visualizing surface strain distribution of facial skin using stereovision

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Theoretical & Applied Mechanics Letters 2016年第4期6卷 167-170页

作者： Nagisa Miura Tsubasa Sakamoto Yuichi Aoyagi Satoru yoneyama Department of Mechanical Engineering Aoyama Gakuin University

An experimental technique has been developed for measuring and visualizing strain distribution on facial skin. A stereovision technique based on digital image correlation is employed for obtaining the displacement distribution on the human face. Time-variation of the movement of the facial skin surface is obtained from consecutive images obtained using a pair of high-speed cameras. The strains on the facial skin surface are then obtained from the measured displacements. The performance of the developed system is demonstrated by applying it to the measurement of the strain on facial skin during the production of sound. Results show that the strains on facial skin can be visualized. Further discussion on the relationship between the creation of wrinkles and strains is possible with the help of the developed system.

关键词： Strain Skin Face Wrinkle Stereovision Digital image correlation