P.N. Tracer, Mark Abernathy, John Leslie, Carla A. Hills, J.W. Patterson, Andrew Grove, Howard Davies, P.G. Githongo, Tameem A. Ebrahim, J.M. Schwartz, David Whittall, W. Medenbach, Arslan Humbaraci, Perry Flint,
... imperative Whether he becomes prime minister or not, Masayoshi Ito has shown Japan's ruling party the only ...
1989 - Gale Group | The Economist
Masayoshi Ito, Hidefumi Shioda, Koji Tanaka,
... Article Chain orientation of electrochemically polymerized polythiophene films Masayoshi Ito, Masayoshi Ito Department of Chemistry, Science University of Tokyo, Shinjuku- ... 162, JapanSearch for more papers by this author Masayoshi Ito, Masayoshi Ito Department of Chemistry, Science University of Tokyo, Shinjuku- ...
Tópico(s): Conducting polymers and applications
1986 - Wiley | Journal of Polymer Science Part C Polymer Letters
Matsukata, Masayoshi; Mar. 23, 1835 - July 2, 1924. Statesman and Prime Minister, Nation's Financial Leader, Genro (Elder Statesman). ... Served as Minister of Finance in the First Ito, Kuroda, First Yamagata, Second Ito, and Second Yamagata ...
0000 - Gale Group | NCCO Photography
Masayoshi Ito, Jose R. C. Pereira, Roger S. Porter,
... ethylene terephthalate) by multiple internal reflection infrared spectroscopy Masayoshi Ito, Masayoshi Ito Department of Polymer Science and Engineering, Materials Research ... Massachusetts 01003Search for more papers by this author Masayoshi Ito, Masayoshi Ito Department of Polymer Science and Engineering, Materials Research ...
Tópico(s): Recycling and Waste Management Techniques
1982 - Wiley | Journal of Polymer Science Polymer Letters Edition
Hideki Kandori, Yuko Katsuta, Masayoshi Ito, Hiroyuki Sasabe,
... the rhodopsin chromophore in solutionHideki Kandori, Yuko Katsuta, Masayoshi Ito, and Hiroyuki SasabeCite this: J. Am. Chem. Soc. ...
Tópico(s): Molecular spectroscopy and chirality
1995 - American Chemical Society | Journal of the American Chemical Society
Hideki Kandori, Sinzi Matuoka, Yoshinori Shichida, Tôru Yoshizawa, Masayoshi Ito, Kiyoshi Tsukida, Valeria Balogh‐Nair, Koji Nakanishi,
... pulseHideki Kandori, Sinzi Matuoka, Yoshinori Shichida, Toru Yoshizawa, Masayoshi Ito, Kiyoshi Tsukida, Valeria Balogh-Nair, and Koji NakanishiCite ...
Tópico(s): Neural dynamics and brain function
1989 - American Chemical Society | Biochemistry
Yoshitaka Fukada, Yoshinori Shichida, Tôru Yoshizawa, Masayoshi Ito, Akiko Kodama, Kiyoshi Tsukida,
... cis-locked-rhodopsinYoshitaka Fukada, Yoshinori Shichida, Toru Yoshizawa, Masayoshi Ito, Akiko Kodama, and Kiyoshi TsukidaCite this: Biochemistry 1984, ...
Tópico(s): Retinal Development and Disorders
1984 - American Chemical Society | Biochemistry
Yuko Katsuta, Masayoshi Ito, Kazuo Yoshihara, Koji Nakanishi, Takahiro Kikkawa, T. Fujiwara,
... Chromophore in the Firefly Squid, Watasenia scintillansYuko Katsuta, Masayoshi Ito, Kazuo Yoshihara, Koji Nakanishi, Takahiro Kikkawa, and Takaji ...
Tópico(s): Molecular spectroscopy and chirality
1994 - American Chemical Society | The Journal of Organic Chemistry
Yumiko Mukai, Motoko Abe, Yuko Katsuta, Sumiyo Tomozoe, Masayoshi Ito, Yasushi Koyama,
... RetinalsYumiko Mukai, Motoko Abe, Yuko Katsuta, Sumiyo Tomozoe, Masayoshi Ito, and Yasushi KoyamaCite this: J. Phys. Chem. 1995, ...
Tópico(s): Retinal Development and Disorders
1995 - American Chemical Society | The Journal of Physical Chemistry
Kei Ito, Kazunori Shinomiya, Masayoshi Ito, J. Douglas Armstrong, George Boyan, Volker Hartenstein, Steffen Harzsch, Martin Heisenberg, Uwe Homberg, Arnim Jenett, Haig Keshishian, Linda L. Restifo, Wolfgang Rößler, J. Simpson, Nicholas J. Strausfeld, Roland Strauß, Leslie B. Vosshall,
Despite the importance of the insect nervous system for functional and developmental neuroscience, descriptions of insect brains have suffered from a lack of uniform nomenclature. Ambiguous definitions of brain regions and fiber bundles have contributed to the variation of names used to describe the same structure. The lack of clearly determined neuropil boundaries has made it difficult to document precise locations of neuronal projections for connectomics study. To address such issues, a consortium ...
Tópico(s): Insect and Arachnid Ecology and Behavior
2014 - Cell Press | Neuron
Akikazu Kakehi, Suketaka Ito, Tsuyoshi Ohizumi, Masayoshi Ito,
Abstract Alkaline treatment of 2-(aroylmethoxy)-3-(2,2-dicyanovinyl)indolizine derivatives, readily available from the step-by-step reactions of 1-(ethoxycarbonylmethyl)-2-picolinium salts with a base, (ethoxymethylene)malononitrile followed by some phenacyl bromides in ethanol, afforded smoothly the title compounds, 2-aroylfuro[2,3-b]indolizine derivatives, in good yields. These furoindolizines could be also obtained directly from the pyridinium salts without the isolation of intermediate 3-vinylindolizines. ...
Tópico(s): Chemical synthesis and alkaloids
1983 - Oxford University Press | Bulletin of the Chemical Society of Japan
Xiaofeng Wang, Ritsuko Fujii, Seigo Ito, Yasushi Koyama, Yumiko Yamano, Masayoshi Ito, Takayuki Kitamura, Shozo Yanagida,
Titanium oxide-based dye-sensitized solar cells (DSSC) were fabricated by the use of retinoic acid and carotenoic acids having the number of conjugated double bonds, n = 5–13. The incident photon-to-current conversion efficiency, the photocurrent density and the solar energy-to-electricity conversion efficiency exhibited the highest values at n = 7, and then decreased toward both sides. The effects of dilution of CA7 with deoxycholic acid were also examined. The above parameters per unit CA7 concentration ...
Tópico(s): Quantum Dots Synthesis And Properties
2005 - Elsevier BV | Chemical Physics Letters
Akikazu Kakehi, Suketaka Ito, Masayoshi Ito, Toshiaki Yotsuya, Kenji Nagata,
Abstract Alkaline treatment of 1-[(acylmethylthio)methyleneamino]pyridinium halides gave unexpectedly 3-acyl- or 3-(acylthio)pyrazolo[1,5-a]pyridine derivatives in 35–87% yields. Some 4,4a-dihydropyrido[1,2-d][1,3,4]thiadiazine intermediates involved in these reactions could be detected by their nmr follows and three related 4a,8-dimethyl derivatives were isolated. Substituent effect and possible mechanisms are also discussed.
Tópico(s): Synthesis and Biological Evaluation
1985 - Oxford University Press | Bulletin of the Chemical Society of Japan
Yong Wan, Hideo Otsuna, Holly A. Holman, B. C. Bagley, Masayoshi Ito, A. Kelsey Lewis, Mary Colasanto, Gabrielle Kardon, Kei Ito, Charles Hansen,
Image segmentation and registration techniques have enabled biologists to place large amounts of volume data from fluorescence microscopy, morphed three-dimensionally, onto a common spatial frame. Existing tools built on volume visualization pipelines for single channel or red-green-blue (RGB) channels have become inadequate for the new challenges of fluorescence microscopy. For a three-dimensional atlas of the insect nervous system, hundreds of volume channels are rendered simultaneously, whereas ...
Tópico(s): Optical Coherence Tomography Applications
2017 - BioMed Central | BMC Bioinformatics
Qingzhong Ren, Ching-Po Yang, Zhiyong Liu, Ken Sugino, Kent Mok, Yisheng He, Masayoshi Ito, Aljoscha Nern, Hideo Otsuna, Tzumin Lee,
Building a sizable, complex brain requires both cellular expansion and diversification. One mechanism to achieve these goals is production of multiple transiently amplifying intermediate neural progenitors (INPs) from a single neural stem cell. Like mammalian neural stem cells, Drosophila type II neuroblasts utilize INPs to produce neurons and glia. Within a given lineage, the consecutively born INPs produce morphologically distinct progeny, presumably due to differential inheritance of temporal ...
Tópico(s): Genomics and Chromatin Dynamics
2017 - Elsevier BV | Current Biology
Daisuke Sawai, Mika Miyamoto, Tetsuo Kanamoto, Masayoshi Ito,
No systematic study has been reported on the lamellar thickening in atactic poly(acrylonitrile) (PAN) upon annealing because PAN, in the form of solution-cast films or their drawn products, generally shows no small-angle X-ray scattering (SAXS) maximum corresponding to the lamellar thickness. In this work, PAN crystals were precipitated during the thermal polymerization of acrylonitrile in solution. The nascent PAN film, obtained by the filtration of the crystal suspension, exhibited a clear SAXS ...
Tópico(s): Polymer crystallization and properties
2000 - Wiley | Journal of Polymer Science Part B Polymer Physics
Shigeyuki Ono, Masayoshi Ito, Hideyuki Tokumitsu, Kazuhiko Seki,
The structure of bound rubber in the composites from fumed silica (A200, Nippon Aerosil Co., Japan) and polyethylacrylate rubber (PEA) was studied as a function of mixing temperature. The fraction of bound rubber in the composites increased gradually with increasing the mixing temperature from 80 to 120°C, followed by saturation above 120°C. High-resolution solid-state NMR results revealed that there was no chemical bonding between silanol groups and PEA molecules. Scanning electron microscope and ...
Tópico(s): Advanced Polymer Synthesis and Characterization
1999 - Wiley | Journal of Applied Polymer Science
Fumito Yatsuyanagi, Hiroyuki Kaidou, Masayoshi Ito,
Abstract The wide-line NMR and viscoelastic measurements were carried out for the filled rubber systems. NMR results revealed that the filler-gel in the filled rubber composites had a multi-component system depending on the mobility of rubber molecules. The fraction and the spin-spin relaxation time of each component were well correlated with the viscoelastic properties such as dynamic storage modulus (E′) and loss-tangent (tan δ) of the filled rubber systems. Such findings turned out to be useful ...
Tópico(s): Asphalt Pavement Performance Evaluation
1999 - American Chemical Society | Rubber Chemistry and Technology
Daisuke Sawai, Akira Yamane, Tunenori Kameda, Tetsuo Kanamoto, Masayoshi Ito, Hitoshi Yamazaki, Kunio Hisatani,
Uniaxial drawing of isotactic poly(acrylonitrile) (iso-PAN, isotactic triad fraction of 68%) and the resultant structure and tensile properties of drawn products were studied. The results were compared to those of atactic-PAN (at-PAN). Dried gel films prepared from 2 to 10 wt % solutions in N,N'-dimethylformamide were initially drawn by solid-state coextrusion (first-stage draw) to an extrusion draw ratio of 16, followed by a further tensile draw at 100−200 °C (second-stage draw). The ductility of iso- ...
Tópico(s): Natural Fiber Reinforced Composites
1999 - American Chemical Society | Macromolecules
Shigeyuki Ono, Yasutaro Kiuchi, Junich Sawanobori, Masayoshi Ito,
Structure development in silica filled polyisoprene composites was investigated by wide line pulsed NMR and high-resolution solid-state NMR combined with transmission electron microscopy. The rubber phase in the composites was composed of so-called bound rubber and free rubber. Furthermore, the bound rubber was composed of multiple phases having different mobilities. The amount of bound rubber and its mobility depended on the sort of silica used. NMR results revealed that chemical bonding was negligible ...
Tópico(s): Concrete and Cement Materials Research
1999 - Wiley | Polymer International
Jun’ichi Uenishi, Reiko Kawahama, Osamu Yonemitsu, Akimori Wada, Masayoshi Ito,
Suzuki coupling of stereochemically pure (Z)-bromotetraene 1—which is extremely unstable but can be kept in frozen benzene in the presence of a small amount of PPh3 at &sminus 01;20°C—and (Z)-alkenylboronic acid 2 provides the stereocontrolled synthesis of (11Z)-retinal 3. The 11Z configuration, which is introduced by selective catalytic debromination of the corresponding dibromo precursor of 1, is retained in this step. TBDMS = tBuMe2Si.
Tópico(s): Retinal and Macular Surgery
1998 - Wiley | Angewandte Chemie International Edition
Masayoshi Ito, Kazuko Mizuochi, Tetsuo Kanamoto,
Solid-state coextrusion draw was carried out for films of aggregates of solution- and melt-grown crystals of nylon-6 with α- and γ-forms. Under ordinal crystallization conditions, the crystal form was primarily a monoclinic α-form. Thus, α-crystals were converted to the γ-form by iodine treatment, followed by treatment with aqueous solution of sodium thiosulfate. The maximum extrusion draw ratio achieved (EDRmax) at temperatures in the range of 100–180°C was greatly affected by both the crystal forms ...
Tópico(s): Liquid Crystal Research Advancements
1998 - Elsevier BV | Polymer
Takaharu Seki, Kunio Isono, Kaoru Ozaki, Yasuo Tsukahara, Yuko Shibata‐Katsuta, Masayoshi Ito, Toshiaki Irie, Masanao Katagiri,
Carotenoid-depleted fruit flies, Drosophila melanogaster, were reared on yeast/glucose medium containing lipid-depleted white corn grits and cholesterol. After rearing for more than a year, the yield of flies remained constant and the content of 3-hydroxyretinal in a head was three logarithmic units less than that of normal flies reared on medium containing yellow corn grits. When all-trans retinal was supplied as the sole source of retinoids, the flies formed and accumulated all-trans 3-hydroxyretinal ...
Tópico(s): Retinal Diseases and Treatments
1998 - Wiley | European Journal of Biochemistry
Yumiko Yamano, Chisato Tode, Masayoshi Ito,
The novel acyclic tetrasubstituted olefinic end group and the cyclopentyl end group of carotenoids were obtained by Lewis acid-promoted stereoselective rearrangement of the epoxide end group of 5,6-epoxy carotenoids. The scope and limitation of this rearrangement were investigated.
Tópico(s): Marine Sponges and Natural Products
1998 - | Journal of the Chemical Society. Perkin transactions I/Journal of the Chemical Society. Perkin transactions. I
Daisuke Sawai, Akira Yamane, Hiroshi Takahashi, Tetsuo Kanamoto, Masayoshi Ito, Roger S. Porter,
Ultradrawing of atactic poly(acrylonitrile) (PAN) was investigated for a Mv series, ranging 8.0 × 104–2.3 × 106. Samples for the draw were prepared from 0.5–30 wt % solutions of PAN in N,N′-dimethylformamide. The solutions were converted to a gel by quenching from 100 to 0°C. The dried gel films were initially drawn uniaxially by solid-state coextrusion (first-stage draw) to an extrusion draw ratio (EDR) of 16, followed by further tensile draw at 100–250°C (second-stage draw). The maximum total draw ratio ( ...
Tópico(s): Fiber-reinforced polymer composites
1998 - Wiley | Journal of Polymer Science Part B Polymer Physics
Masaru Sakamoto, Akimori Wada, Akiko Akai, Masayoshi Ito, Takehiko Goshima, Tetsuo Takahashi,
Previous studies using retinal analogs (Wada, A., Sakai, M., Kinumi, T., Tsujimoto, K., Yamauchi, M. and Ito, M. (1994) J. Org. Chem. 59, 6992–6997; Wada, A., Sakai, M., Imamoto, Y., Shichida., Y., Yoshizawa, T. and Ito, M. (1993) Chem. Pharm. Bull. 41, 793–795) revealed that both retinochrome and visual pigments share a common chromophoric conformation in which the ring region of retinal is twisted ca. 50° with respect to the plane of the polyene chain, suggesting a highly conserved 6‐s‐ cis conformation ...
Tópico(s): Retinal Development and Disorders
1998 - Wiley | FEBS Letters
Akira Yamane, Daisuke Sawai, Tsunenori Kameda, Tetsuo Kanamoto, Masayoshi Ito, Roger S. Porter,
Solutions (1−5 wt %) of ultrahigh-molecular-weight atactic poly(acrylonitrile) (UHMW-PAN) in N,N‘-dimethylformamide were crystallized to gel by quenching from 100 to 0 °C. The dried gel films exhibited poor ductility on straight tensile draw. However, they were ductile on solid-state coextrusion to an extrusion draw ratio (EDR) of 8−16 (first-stage draw). Thus, the initially coextrusion drawn films were further drawn by a tensile force (second-stage draw). Drawability of the gel film was strongly influenced ...
Tópico(s): Natural Fiber Reinforced Composites
1997 - American Chemical Society | Macromolecules
Akimori Wada, Saeko Hiraishi, Norio Takamura, Tadamasa Date, K. AOE, Masayoshi Ito,
In order to establish the stereoselective synthesis of retinoic acids, which are ligand molecules of the retinoic acid receptors (RARs, all-E-isomer) and the retinoid X receptors (RXRs, 9Z-isomer), the reaction of beta-ionone-tricarbonyliron complex 7 with carbanions was investigated. Treatment of 7 with the lithium salt of acetonitrile afforded (7E,9E)-beta-ionylideneacetonitrile-tricarbonyliron complex 8 exclusively, via addition, dehydration, and migration of tricarbonyliron complex. On the contrary, ...
Tópico(s): Porphyrin and Phthalocyanine Chemistry
1997 - American Chemical Society | The Journal of Organic Chemistry
Etsuo Naito, Masayoshi Ito, Ichiro Yokota, Takahiko Saijo, Junko Matsuda, Hitoshi Osaka, Shioko Kimura, Yuichi Kuroda,
Abstract We report molecular analysis of thiamin‐responsive pyruvate dehydrogenase complex (PDHC) deficiency in a patient with an X‐linked form of Leigh syndrome. PDHC activity in cultured lymphoblastoid cells of this patient and his asymptomatic mother were normal in the presence of a high thiamin pyrophosphate (TPP) concentration (0.4 mmol/L). However, in the presence of a low concentration (1 X 10‐4 mmol/L) of TPP, the activity was significantly decreased, indicating that PDHC deficiency in this ...
Tópico(s): Alcoholism and Thiamine Deficiency
1997 - Springer Science+Business Media | Journal of Inherited Metabolic Disease
N. Kida, Masayoshi Ito, Fumito Yatsuyanagi, Hiroshi Kaido,
The structure and formation mechanism of carbon gel in carbon black filled polyisoprene composites were studied by the pulsed NMR technique. The composites were prepared from a wide range of molecular weights by a solution blend. The carbon gels were extracted from the composites by a solvent-extraction method. The content of carbon gel was not governed by the molecular weight of rubber but was controlled by the viscosity of rubber solutions which were used for the blend. Three rubber phases, having ...
Tópico(s): Fiber-reinforced polymer composites
1996 - Wiley | Journal of Applied Polymer Science