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Fabrication and characteristics of ZnO thin films deposited by RF sputtering on plastic substrates for flexible display

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Science China(Information Sciences) 2012年第6期55卷 1441-1445页

作者： Satoru MATSUMOTO yuji INO Department of Electrical Engineering Keio UniversityJapan

ZnO thin films were successfully grown on flexible plastic substrates using radio-frequency mag-netron sputtering method at room *** effects of the sputtering power on the quality of the ZnO films have been *** results show that thin films were polycrystalline,with wurtzite structure and a strong preferred c-axis orientation (002).The root-mean-square (rms) surface roughness of the ZnO thin films is 22.1 *** ZnO thin films fabricated by sputtering with 70 W sputtering power have a high mobility of 34.33 cm 2 /V·*** ZnO films are shown to be compatible with flexible display on plastic substrates.

关键词： ZnO thin film sputtering plastic substrate flexible display room temperature process

Exact Solution of the Milburn Equation for the Two—Mode Two—Photon Jaynes—Cummings Model

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Communications in Theoretical Physics 2001年第1期35卷 100-105页

作者： ZOUXu－Bo yuji－Hua 等 ZhejiangInstituteofModernPhysicsandDepartmentofPhysics ZhejiangUniversityHangzhou310027China ZhejiangInstituteofModernPhysicsandDepartmentofPhysics ZhejiangUniversityHangzhou31

We adopt an algebraic method to study the two-mode two-photon Jaynes Cummings model governed by the Milburn equation and find an exact solution of Milburn equation of the system. The influence of the intrinsic decoher... 详细信息

关键词：双能级原子量子化场双光子跃迁

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空间天文望远镜自适应精密稳像闭环控制

光学精密工程 2024年第8期32卷 1153-1163页

作者：张泉魏传新高源蓬朱雨霁李清灵房陈岩周显宜尹达一中国科学院红外探测与成像技术重点实验室上海200083 中国科学院上海技术物理研究所上海200083

针对空间天文望远镜低频段视轴扰动补偿问题,提出了一种基于主动光学技术的自适应精密稳像闭环控制方法。该方法以精细导星仪(Fine Guide Sensor,FGS)为高精度视轴扰动检测器,以四点支撑压电驱动大口径快摆镜机构(Fast Steering Mirror,... 详细信息

针对空间天文望远镜低频段视轴扰动补偿问题,提出了一种基于主动光学技术的自适应精密稳像闭环控制方法。该方法以精细导星仪(Fine Guide Sensor,FGS)为高精度视轴扰动检测器,以四点支撑压电驱动大口径快摆镜机构(Fast Steering Mirror,FSM)为视轴扰动补偿器。首先,采用位置式PID控制器串联积分环节进行精密稳像闭环控制,得到补偿FGS检测出的二维视轴扰动所需FSM的二维摆动角度,进而根据驱动结构转换为每个支撑点的压电陶瓷执行器(Piezoelectric actuators,PZT)的伸缩量。然后,利用基于广义Bouc-Wen逆模型的压电动态迟滞前馈补偿方法进行高精度的压电陶瓷执行器定位控制。最后,根据有监督的Hebb学习规则,利用具有自学习和自适应能力单神经元对PID控制器参数进行调整,从而得到最优控制器参数。实验结果表明,所提控制方法能够有效地补偿空间天文望远镜的视轴偏差,可以将精细导星仪X方向和Y方向的星点质心位置偏差功率谱密度在0~6 Hz频段内积分值分别抑制了98.54%和98.62%。

关键词：空间天文望远镜精密稳像精细导星仪大口径快摆镜机构迟滞补偿单神经元自适应PID控制

LOTUS, a potent blocker of Nogo receptor-1 causing inhibition of axonal growth

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Neural Regeneration Research 2015年第1期10卷 46-48页

作者： yuji Kurihara Kohtaro Takei Molecular Medical Bioscience Laboratory Department of Medical Life ScienceYokohama City University Graduate School of Medical Life Science Suehiro-cho 1-7-29 Tsurumi-ward Yokohama 230-0045 Japan

Glia-derived axonal growth inhibitory proteins limit functional repair following damage to the adult cen- tral nervous system （CNS）. Nogo proteins, myelin-as- sociated glycoprotein （MAG）, oligodendrocyte myelin glycoprotein （OMgp） and B lymphocyte stimulator （BLyS）, are 4 inhibitors that commonly interact with the neuronal receptor, Nogo receptor-1 （NgR1）, lead- ing to inhibition of axonal growth. Here, we demon- strate that lateral olfactory tract usher substance （LOTUS） binds to NgR1 and blocks the binding of all four ligands to NgR1, resulting in the suppression of axonal growth inhibition induced by these NgR1 li- gands. LOTUS allows neurons to overcome NgRl-me- diated axonal growth inhibition, raising the possibility that LOTUS may be useful in future therapeutic ap- proaches as an endogenous potent inhibitor of NgR1 for promoting neuronal regeneration.

关键词： OMgp MAG a potent blocker of Nogo receptor-1 causing inhibition of axonal growth LOTUS

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基于深度学习的混响感知麦克风阵列语音增强

厦门大学学报（自然科学版） 2024年第2期63卷 287-295,304页

作者：何伟刘雨佶童峰康元勋冯万健厦门大学海洋与地球学院福建厦门361005 导航与位置服务技术国家地方联合工程研究中心(厦门大学) 福建厦门361005 厦门亿联网络技术股份有限公司福建厦门361015

[目的]针对基于深度神经网络频谱估计的麦克风阵列算法存在数据依赖的问题,提出了一种基于深度学习的混响感知麦克风阵列语音增强算法.[方法]首先利用麦克风阵列波束形成输出与原始信号做互相关,以近似房间冲激响应的形式获取当前环境... 详细信息

[目的]针对基于深度神经网络频谱估计的麦克风阵列算法存在数据依赖的问题,提出了一种基于深度学习的混响感知麦克风阵列语音增强算法.[方法]首先利用麦克风阵列波束形成输出与原始信号做互相关,以近似房间冲激响应的形式获取当前环境的混响特性作为LSTM网络的输入,网络模型以干净语音为目标进行训练从而输出房间冲激响应泛化向量,最后通过组合近似房间冲激响应与房间冲激响应泛化向量获得后置抗混响滤波器系数,实现语音增强.[结果]仿真和实验结果中,与波束形成、加权预测误差算法和传统深度学习去混响算法相比,所提出的方法在不同混响场景下具有更好的表现.[结论]本文方法在不同混响场景下都具有相对稳定的抗混响能力,具有较好的泛化性能.

关键词：混响麦克风阵列波束形成房间冲激响应深度学习长短时记忆

Relationship between microstructure and magnetic domain structure of Nd-Fe-B melt-spun ribbon magnets

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Frontiers of Materials Science 2015年第2期9卷 206-210页

作者： Masaaki TAKEZAWA Hiroyuki TANEDA yuji MORIMOTO Department of Applied Science for Integrated System Engineering Faculty of Engineering Kyushu Institute of Technology 1-1 Sensui-cho Tobata-ku Kitakyushu Fukuoka 804-8550 Japan

The relation between the microstructure, observed using an electron probe microanalyzer, and the domain structure, observed using a Kerr microscope, was established to evaluate the effects of hot rolling and the addition of Ti-C on the c-axis orientation and the magnetization process of hot-rolled Nd-Fe-B-Ti-C melt-spun ribbons. The addition of Ti-C promotes the c-axis orientation and high coercivity in the ribbons. Elemental mapping suggests a uniform elemental distribution; however, an uneven distribution of Ti was observed in an enlarged grain with Ti-enriched points inside the grain. The reversal domains that nucleated at the Ti-enriched point inside the grain cause low coercivity.

关键词： magnetic domain microstructure Kerr effect microscope magneto-optical effect Nd-Fe-B permanent magnet

Secalonic Acid and Benzoic Acid Analogues Exhibiting Cyto toxicity against Cancer Cells Isolated from Claviceps yanagawaensis

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Advances in Microbiology 2022年第12期12卷 649-670页

作者： yuji Doi Daigo Wakana Satoshi Kitaoka Hisashi takeda Eiji Tanaka Tomoo Hosoe Faculty of Pharmaceutical Sciences Hoshi University Tokyo Japan Faculty of Pharmacy and Pharmaceutical Sciences Josai University Sakado Japan Department of Environmental Science Ishikawa Prefectural University Nonoichi Japan

The genus Claviceps (Clavicipitaceae) is noted for producing ergot alkaloids that cause ergotism. Claviceps yanagawaensis, a parasite of Zoysia japonica (family: Poaceae), has been isolated in Japan. Bioactivity screening showed that a methanol extract from a rice culture of C. yanagawaensis was cytotoxic to cancer cells. In our search for active substances, the new secalonic acid analogues (-)-5-epi-F-7 (1) and ergochrysin C (2) and a new benzoic acid analogue, dimethyl bigutol (3), were isolated along with the known compounds 3,4-dihydroxy-5-(3-methyl-2-buten-1-yl)benzoic acid (4) and methyl veratrate (5). The structures of 1 - 3 were elucidated by NMR, MS, and circular dichroism spectroscopy. MTT assays of 1 - 5 using cancer cell lines (HepG2, HL60, HT29, PANC-1, and T98G) showed that 1 - 4 exhibited cytotoxicity against cancer cells.

关键词： Claviceps Secalonic Acid MTT Assay

Selective extraction of In(Ⅲ),Ga(Ⅲ) and Zn(Ⅱ) using a novel extractant with phenylphosphinic acid

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Chinese Journal of Chemical Engineering 2016年第2期24卷 232-236页

作者： yuji Sasaki Naoki Matsuo Tatsuya Oshima Yoshinari Baba Department of Applied Chemistry Faculty of EngineeringUniversity of Miyazaki

A new extractant, [N,N-di（2-ethylhexyl）aminolmethylphenylphosphinic acid （DEAPP）, was synthesized to de- velop the mutual separation techniques of In（Ⅲ）, Ga（Ⅲ） and Zn（Ⅱ）. The extraction selectivity for In（Ⅲ）, Ga（Ⅲ） and Zn（Ⅱ） with DEAPP was higher than that of the commercial phosphorus acid extractants such as D2EHPA and PC-88A. The extraction selectivity for metal ions in 1 mob L 1 aqueous ammonium nitrate solution with DEAPP was in the following order： In（Ⅲ）〉 Ga（Ⅲ）〉 Zn（Ⅱ）. These selective extraction behaviors indicate that the amino moiety of DEAPP plays an important role in the mutual separation of ln（Ⅲ）, Ga（Ⅲ） and Zn（ll）. The extraction equilibria of In（Ⅲ）, Ga（Ⅲ） and Zn（Ⅱ） with DEAPP （ = HR） were expressed by the following reactions： In3＋＋ 2（HR）2 InR3（HR）＋ 3H＋, Ga3＋＋ 1.5（HR）2 ＋ N- = GaR2（HR）（NO3）＋ 2H＋, and Zn2＋ 4- 2（HR）2 ZnR2 （HR） 2 determined 4- 2H＋. The extraction equilibrium constants of In（Ⅲ）, Ga（Ⅲ） and Zn（Ⅱ） with DEAPP were to be Kex, M = 1.7 × 104 [*** 1], 4.17 [（***-1）s], and 1.55 × 10 2 [-], respectively.

关键词： Liquid-liquid extraction Phosphinic acid Indium(Ⅲ) Gallium(Ⅲ) Zinc(Ⅱ) Mutual separation Extraction equilibrium

Low-velocity pneumatic conveying in horizontal pipe for coarse particles and fine powders

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Particuology 2008年第5期6卷 316-321页

作者： yuji Tomita Vijay Kumar Agarwal Hiroyuki Asou Katsuya Funatsu Kyushu Institute of Technology 1-1 SensuichoTobataKitakyushu 804-5500Japan Indian Institute of Technology Hauz KhasNew Delhi 110016India

First, the characteristics of low-velocity conveying of particles having different hardness are experimentally investigated in a horizontal pipeline in terms of flow pattern and pressure drop to show that the slug flow can be classified into two types depending on the settling of particles along the pipeline, and the period is small for slug flow without the settled layer, which is called solitary slug flow. The pressure drop for soft particles is shown to be larger than that for hard particles. Then, experimental results are presented on horizontal fluidized-bed conveying of fine powders to show that air release from the top surface of the conveying channel is an imnortant factor for high mass flow rate of particles.

关键词： Low-velocity conveying Slug flow Soft particle Horizontal fluidized-bed conveying Fine powder