Search Results 1-20 of 3562

  • Fabrication of Silicon Nanowires by Metal-Catalyzed Electroless Etching Method and Their Application in Solar Cell

    TUNGHATHAITHIP Naraphorn , LERTVACHIRAPAIBOON Chutiparn , SHINBO Kazunari , KATO Keizo , TUNGASMITA Sukkaneste , BABA Akira

    … The SiNW arrays with a length of 540 nm were used as a substrate of SiNWs/PEDOT:PSS hybrid solar cell. … Furthermore, gold nanoparticles (AuNPs) were used to improve the light absorption of the device due to localized surface plasmon excitation. … The advantage of a higher interface area between the organic and inorganic semiconductors was established by using SiNW arrays and higher absorption light incorporated with AuNPs for improving the performance of the developed solar cell.</p> …

    IEICE Transactions on Electronics E104.C(6), 180-183, 2021

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  • EFFECTS OF ENVIRONMENTAL EXPOSURE ON CARBONATION-INDUCED DETERIORATION OF OUTDOOR AND INDOOR SIDES OF FINISHED AND NONFINISHED REINFORCED MORTARS  [in Japanese]

    TSUKAGOSHI Masayuki , FUNASAKA Kensuke , UEDA Takao

    … winter, rebar corrosion increased with both increasing mortar temperature and moisture content in the vicinity of the rebar, regardless of whether insulation materials had been applied to the external mortar surface.</p><p>(3) Even when the external mortar surface did not directly come into contact with rainwater, the wintertime mortar moisture content increased when the indoor surface was cold owing to condensation and water penetration from the outdoor surface. …

    Journal of Structural and Construction Engineering (Transactions of AIJ) 86(783), 686-695, 2021

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  • <i>In vitro</i> investigation of the cell compatibility and antibacterial properties of titanium treated with calcium and ozone

    TAKECHI Masaaki , TSURU Kanji , TAKAMOTO Megumi , NINOMIYA Yoshiaki , ONO Shigehiro , MIZUTA Kuniko , NAKAGAWA Takayuki , SHIGEISHI Hideo , OHTA Kouji , ISHIKAWA Kunio

    … <p>The purpose of this study was to evaluate the surface modification of calcium ions on roughened titanium as a surface treatment of dental implants for cell attachment, growth, and initial bacterial adhesion. … When a surface-roughened, pure titanium disk was immersed in a calcium chloride solution (100 mM) containing 20 ppm ozone for 24 h at 25ºC, calcium was detected on the surface by X-ray photoelectron spectroscopy. …

    Dental Materials Journal 40(3), 712-718, 2021

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  • Hemodynamic Forces, Endothelial Mechanotransduction, and Vascular Diseases

    Ando Joji , Yamamoto Kimiko

    … Cells are equipped with a mechanotransduction mechanism by which they perceive mechanical forces and transmit information into the cell interior, thereby causing physiological or pathogenetic mechano-responses. … Endothelial cells (ECs) lining the inner surface of blood vessels are constantly exposed to shear stress caused by blood flow and a cyclic strain caused by intravascular pressure. …

    Magnetic Resonance in Medical Sciences, 2021

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  • Activity Enhancement of a Carbon Electrode Material for Vanadium Redox Flow Battery by Electron-Beam Irradiation

    Ishitobi Hirokazu , Yamamoto Shunya , Ishii Takafumi , Oba Kosuke , Doki Honoka , Obata Ryusuke , Miyashita Atsumi , Okazaki Hiroyuki , Nakagawa Nobuyoshi

    … <p>The effective addition of surface oxygen groups, which are active sites for redox reactions, on carbon clothes as electrodes by electron beam irradiation in normal air which contains environmental humidity, dry air, or nitrogen atmosphere was carried out. … The irradiation introduced 20 at% oxygen at the carbon surface as determined by X-ray photoelectron spectroscopy and the phenol-type hydroxyl group, the carboxylic group, etc., were detected by temperature-programmed desorption. …

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 54(5), 219-225, 2021

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  • Controlling Cell Dynamics by Cell-surface Modification  [in Japanese]

    Higuchi Yuriko , Takafuji Yoshimasa

    … <p>Although the concept of a drug delivery system (DDS) is usually applied to conventional drug therapy, it is also important for cell-based therapy. … The surface manipulation of living cells represents a powerful tool for controlling cell behaviors in the body, such as enhancement of cell-cell interactions, targeted delivery of cells, and protection from immunological rejection. …

    YAKUGAKU ZASSHI 141(5), 661-665, 2021

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  • Development of Muse cell therapy for ischemic stroke  [in Japanese]

    Niizuma Kuniyasu , Tominaga Teiji

    <p>脳梗塞は脳卒中全体の約6割を占め,高齢化に伴い患者数は増加傾向である.既存の如何なる治療法を用いても脳梗塞に陥った組織を回復させられないため,脳組織自体を再生させ得る幹細胞治療に期待が集まっている.Muse細胞は生体に存在する自然の多能性幹細胞であり,腫瘍形成のリスクが低く,安全性が高いと考えられている.Muse細胞は血管内や局所に投与するだけで傷害部位を認識して生着し,組織に応 …

    Japanese Journal of Neuropsychology 37(1), 21-28, 2021

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  • Photolithographic Fabrication of a Micro-electrode Surface on a Carbon Steel Sheet for Local Hydrogen Permeation Measurements

    Fushimi Koji , Ishii Nozomi , Nakajima Ayako , Kitagawa Yuichi , Hasegawa Yasuchika , Matsuo Yasutaka

    … Although the application of a positive-type photoresist coating was effective for the formation of a circle-shaped pattern with a diameter of several tens of micrometers on an iron surface, the coating had poor adhesion to the iron surface and poor durability in an H<sub>2</sub>SO<sub>4</sub> …

    ISIJ International 61(4), 1112-1119, 2021

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  • Detection of Hydrogen Permeation through Pure Iron with Light-addressable Potentiometric Sensor

    Miyamoto Ko-ichiro , Kaneko Manato , Wang Mengyun , Werner Carl Frederik , Yoshinobu Tatsuo

    … In this study, a novel method to detect hydrogen permeation through metal was proposed using a measurement system, in which a LAPS was combined with a micro-volume measurement cell. … The sensing surface of the LAPS was placed in the vicinity of the hydrogen exit surface of an iron sheet to form the micro-volume cell. … The cell was filled with a Na<sub>2</sub>HPO<sub>4</sub> …

    ISIJ International 61(4), 1330-1332, 2021

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  • Artificial Cell Membrane Sensors with Membrane Proteins  [in Japanese]

    ITO Yoshihisa , OSAKI Toshihisa , MIKI Norihisa , TAKEUCHI Shoji

    … <p>Cell membrane consists of membrane proteins reconstituted in a lipid bilayer membrane. … In this report, we introduce recent development of the sensor devices utilizing membrane proteins embedded in artificially produced lipid bilayers, i.e., artificial cell membrane sensors. …

    Vacuum and Surface Science 64(4), 162-167, 2021

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  • Oscillation mechanism in polymer electrolyte membrane fuel cell studied by <i>operando</i> monitoring of oxygen partial pressure using optical probes

    KAKIZAWA Yu , WATANABE Masahiro , IIYAMA Akihiro , INUKAI Junji , KOBAYASHI Takashi , UCHIDA Makoto , OHNO Takashi , SUGA Takeo , TERANISHI Masatoshi , YONEDA Masakazu , SAIKI Toshiharu , NISHIDE Hiroyuki

    … The cell voltage oscillated periodically under a constant-current operation. … <i>p</i>(O<sub>2</sub>)during the oscillation synchronized with the cell voltage. …

    Journal of The Surface Finishing Society of Japan 72(4), 230-237, 2021

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  • Cellular responses of histatin-derived peptides immobilized titanium surface using a tresyl chloride-activated method

    SIWAKUL Paponsun , SIRINNAPHAKORN Lertrit , SUWANPRATEEP Jintamai , HAYAKAWA Tohru , PUGDEE Kamolparn

    Surface topography and cellular morphology were examined using a scanning electron microscope. … Elemental composition and conformational peptides on Ti surface were examined using energy dispersive X-ray and fourier transform infrared spectroscopy, respectively. … The results showed that peptides were successfully immobilized on Ti surface. … Cell attachments on histatin-1 and mixed peptides coated groups are higher than control. …

    Dental Materials Journal, 2021

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  • Osteogenic response under the periosteum by magnesium implantation in rat tibia

    ODASHIMA Kenji , KUMAMOTO Hiroyuki , SHIMIZU Yoshinaka , SANO Yuya , YAMAMOTO Akiko , MUKAI Toshiji , TAKADA Yukyo , YANAGISAWA Yuta , IMAI Yoshimichi , TAKAHASHI Tetsu

    … The element concentrations of fibrous capsules around the specimens were also measured by ICP-MS. The concentrations of Ca and P on the surface of the Mg specimen increased in SEM/EDX. … The tissue specimen showed new bone formation on the bone surface near the implanted area. … Induction of cell differentiation may be influenced by corrosion products in addition to corroding magnesium.</p> …

    Dental Materials Journal 40(2), 498-507, 2021

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  • Effects of surface roughness of ceria-stabilized zirconia/alumina nanocomposite on the morphology and function of human gingival fibroblasts

    AKIYAMA Yuri , IWASA Fuminori , HOTTA Yasuhiro , MATSUMOTO Takashi , OSHIMA Yoko , BABA Kazuyoshi

    … <p>We evaluated the biological effects of implant abutments made from ceria-stabilized zirconia/alumina nanocomposite (Ce-TZP/Al<sub>2</sub>O<sub>3</sub>) with surface roughness variations using human gingival fibroblasts (HGF-1) in the transmucosal region. … disks with different surface roughness profiles were prepared (Ra0.9 and Ra0.02). … Surface properties were evaluated using SEM, EDX, and wettability analysis. …

    Dental Materials Journal 40(2), 472-480, 2021

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  • LES analysis on soot formation process in a high-boosted diesel engine  [in Japanese]

    ZHOU Beini , KONOMI Toshiki , SASAKI Shota , NAKATSUKA Mahoko , KUSAKA Jin

    … The soot mass production within a computation cell was determined from a phenomenological soot formation model developed by Waseda University. … The model was combined with the LES code mentioned above, including the following important steps: particle inception in which naphthalene grows irreversibly to form soot, surface growth with the addition of C<sub>2</sub>H<sub>2</sub>, surface oxidation with OH radical and O<sub>2</sub> …

    Transactions of the JSME (in Japanese) 87(895), 20-00383-20-00383, 2021

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  • Fabrication of bioactive glass coating on pure titanium by sol-dip method: Dental applications

    SAFAEE Sirus , VALANEZHAD Alireza , NESABI Mahdis , JAFARNIA Shiva , SANO Hideaki , SHAHABI Sima , ABE Shigeaki , WATANABE Ikuya

    … Bioinert Ti substrates were coated by BG to induce bioactivity to the surface. … The sol-gel derived BG 58S sol was successfully prepared and coated on the abraded and blasted Ti surface using the sol-dip method. … The characterization and cell study for all substrates' surface was carried out. …

    Dental Materials Journal, 2021

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  • A novel coating layer on zirconia using modified zinc phosphatizing method

    KODAMA Kouta , VALANEZHAD Alireza , KHODAEI Mohammad , SAFAEE Sirus , JAFARNIA Shiva , NESABI Mahdis , ABE Shigeaki , WATANABE Ikuya , MURATA Hiroshi

    … MC3T3-E1 cells attachment was evaluated by SEM, and cell proliferation were assessed using MTS assay™. … SEM images confirmed that the zinc phosphate coating layer was successfully prepared and fully covered the surface. … cell study indicated that the coated sample had better cell morphology and proliferation. …

    Dental Materials Journal, 2021

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  • Effects of Naringin on the Proliferation and Osteogenic Differentiation of Canine Bone Marrow Stromal Cells <i>In Vitro</i>

    Zhang Jing , Xu Da-peng , Shang Jiang , Liang Xin-jie , Zhang Xue-bin

    … The results of cell-surface marker analysis showed that the cells were negative for CD34 and CD45 expression, with values of 0.126% and 0.075%, respectively, and positive for CD90 expression, a value of 95.4%. … mol/l obviously promoted cell proliferation, among the concentrations, this concentration achieved the best effects on proliferation and osteogenic differentiation. …

    Journal of Hard Tissue Biology 30(1), 73-78, 2021

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  • Evaluation of the Anti-Allergic Effect of Natural Medicines on Mast Cell by Using Two-Dimensional Surface Plasmon Resonance Observation

    YANG Lin , ZHU Xianwei , SUGA Minoru , SHINOHARA Hiroaki

    … In this study, the simple and rapid evaluation of the anti-allergic effect of natural medicines on the degranulation of a model mast cell (RBL-2H3 cells) was successfully achieved by two-dimensional surface plasmon resonance (2D-SPR) measurement. … The each cell response was observed by SPR imaging upon model antigen, Albumin from bovine serum, 2, 4-Dintrophenylated (DNP-BSA) stimulation after anti-DNP IgE sensitization on RBL-2H3 cells. …

    Electrochemistry 89(1), 7-11, 2021

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  • Temperature measurement around multiple boiling bubbles in a confined space using two-color laser-induced fluorescence

    TANGE Manabu , KURIBAYASHI Kosuke , ABDELGHANY Ahmed

    … We successfully observed the scavenging of superheated liquid from the heat transfer surface to demonstrate this method's utility. …

    Journal of Thermal Science and Technology 16(1), JTST0005-JTST0005, 2021

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