Search Results - "UMEGAKI, Takao"

Refine Results
  1. 1

    Effects of Carboxylic Acids on the Crystallization of Calcium Carbonate by Wada, Norio, Kanamura, Kiyoshi, Umegaki, Takao

    Published in Journal of colloid and interface science (01-01-2001)
    “…The effects of seven carboxylic acids, i.e., acrylic acid, maleic acid, tartaric acid, malic acid, succinic acid, and citric acid, on CaCO3 crystallization…”
    Get full text
    Journal Article
  2. 2
  3. 3

    Effects of Carboxylic Acids on Calcite Formation in the Presence of Mg2+Ions by Wada, Norio, Yamashita, Kimihiro, Umegaki, Takao

    Published in Journal of colloid and interface science (15-04-1999)
    “…The effects of seven carboxylic acids on calcite formation in the presence of Mg2+ions, whose molar concentration ratio Mg2+/Ca2+= 0.5 exclusively induced…”
    Get full text
    Journal Article
  4. 4
  5. 5

    Effects of divalent cations upon nucleation, growth and transformation of calcium carbonate polymorphs under conditions of double diffusion by Wada, Norio, Yamashita, Kimihiro, Umegaki, Takao

    Published in Journal of crystal growth (01-03-1995)
    “…The effects of 7 different divalent cations upon nucleation, growth and transformation of CaCO 3 polymorphs were investigated using a double diffusion…”
    Get full text
    Journal Article
  6. 6
  7. 7

    Mimicking Nanometer Atomic Processes on a Micrometer Scale via Electrophoretic Deposition by Sarkar, Partho, De, Debnath, Yamashita, Kimihiro, Nicholson, Patrick S., Umegaki, Takao

    Published in Journal of the American Ceramic Society (01-06-2000)
    “…The process of submonolayer formation during the electrophoretic deposition (EPD) of colloidal films of micrometer‐sized (diameter ∼ 0.5 μm) silica particles…”
    Get full text
    Journal Article
  8. 8

    Synthesis and Na+ conduction properties of the ceramics of Na5YSi4O12-type phosphate-substituted solid solutions by Yamashita, Kimihiro, Matsuda, Motohide, Umegaki, Takao

    Published in Journal of materials research (01-12-1998)
    “…The Na+-superionic conducting ceramics with Na5YSi4O12-type structure were synthesized using the composition formula of Na3+3x−yY1-xPySi3-yO9, in which some…”
    Get full text
    Journal Article
  9. 9
  10. 10

    Crystallization, fluoridation and some properties of apatite thin films prepared through rf-sputtering from CaO-P2O5 glasses by YAMASHITA, K, MATSUDA, M, ARASHI, T, UMEGAKI, T

    Published in Biomaterials (01-07-1998)
    “…Using calcium phosphate glass targets with the CaO/P2O5 molar ratios of 1.50-0.50, much lower than the stoichiometric value of 3.3 for hydroxyapatite, thin…”
    Get full text
    Journal Article
  11. 11

    The effects of sodium ion on hydrolysis and condensation of diethoxydimethylsilane by Suda, Seiichi, Iwaida, Manabu, Yamashita, Kimihiro, Umegaki, Takao

    Published in Journal of non-crystalline solids (01-04-1996)
    “…The effect of sodium ion on hydrolysis and condensation of diethoxydimethylsilane (DEDMS) was investigated by 29Si NMR spectroscopy. Discussed were the…”
    Get full text
    Journal Article
  12. 12

    Effects of Lanthanum on the Electrical Conductivity of CuO Ceramics by Suda, Sei-ichi, Aoyama, Takeshi, Kanamura, Kiyoshi, Umegaki, Takao

    “…Lanthanum was dissolved in CuO and the effects of La on the electrical conductivity of CuO were investigated in order to control the hole concentration and…”
    Get full text
    Journal Article
  13. 13

    Composition effects on Na +-ion conduction properties and structure of Narpsio glass-ceramics by Yamashita, Kimihiro, Kakuta, Toshiya, Sakurai, Bungo, Umegaki, Takao

    Published in Solid state ionics (01-07-1996)
    “…Na + -superionically conducting glass-ceramics were produced using Na 5YSi 4O 12-type materials (Narpsio). Their conduction properties were experimentally…”
    Get full text
    Journal Article Conference Proceeding
  14. 14

    High temperature pH sensitivities of stabilized zirconia films and ceria ceramics by Inda, Yasushi, Yamashita, Kimihiro, Umegaki, Takao, Greenblatt, Martha

    Published in Solid state ionics (01-07-1996)
    “…Yttria-stabilized zirconia (YSZ) thick films and bulk ceria (CeO 2) ceramics used as membrane electrodes are shown to work as high temperature pH sensors. The…”
    Get full text
    Journal Article Conference Proceeding
  15. 15

    Formation of thin calcium carbonate films with aragonite and vaterite forms coexisting with polyacrylic acids and chitosan membranes by Wada, Norio, Suda, Seiichi, Kanamura, Kiyoshi, Umegaki, Takao

    Published in Journal of colloid and interface science (01-11-2004)
    “…CaCO 3 crystallization on a chitosan membrane was studied using diffusion of (NH 4) 2CO 3 vapors into a CaCl 2 solution containing differing added amounts of…”
    Get full text
    Journal Article
  16. 16
  17. 17

    Electrophoretic coating of multilayered apatite composite on alumina ceramics by Yamashita, Kimihiro, Yonehara, Eiko, Ding, Xufeng, Nagai, Masaharu, Umegaki, Takao, Matsuda, Motohide

    “…By means of an electrophoretic deposition technique followed by sintering, alumina and zirconia ceramics were coated with apatitic composites composed of…”
    Get full text
    Journal Article
  18. 18

    Preparation of Li4/3Ti5/3O4 Thin Film Anode with High Electrochemical Response for Rechargeable Lithium Batteries by Sol–Gel Method by Rho, Young Ho, Kanamura, Kiyoshi, Umegaki, Takao

    Published in Chemistry letters (01-12-2001)
    “…A stoichiometric spinel Li4/3Ti5/3O4 thin film was prepared by a sol–gel method with poly(vinylpyrrolidone) (PVP) as an anode of rechargeable lithium…”
    Get full text
    Journal Article
  19. 19

    Formation mechanism of amorphous Na2O-SiO2 spheres prepared by sol-gel and ion-exchange method by SUDA, Seiichi, YOSHIDA, Tomokazu, KANAMURA, Kiyoshi, UMEGAKI, Takao

    Published in Journal of non-crystalline solids (15-06-2003)
    “…Mono-disperse Na2O-SiO2 (NS) amorphous spheres were synthesized by sol-gel and ion-exchange method, the latter involving ion exchange between alkali ion and…”
    Get full text
    Journal Article
  20. 20

    Formation mechanism of amorphous Na 2O–SiO 2 spheres prepared by sol–gel and ion-exchange method by Suda, Seiichi, Yoshida, Tomokazu, Kanamura, Kiyoshi, Umegaki, Takao

    Published in Journal of non-crystalline solids (2003)
    “…Mono-disperse Na 2O–SiO 2 (NS) amorphous spheres were synthesized by sol–gel and ion-exchange method, the latter involving ion exchange between alkali ion and…”
    Get full text
    Journal Article