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21.
Y. Tarumi Y. Takebayashi K. Moriguchi T. Atsumi T. Fukumaru H. Yamamoto 《Journal of heterocyclic chemistry》1980,17(7):1425-1433
Acylation of 4-carbamoylimidazolium-5-olate ( 2 ) with a variety of acid chlorides produced 4(5)-carbamoyl-1H-imidazol-5-(4)yl acid carboxylates ( 3a-j ). Treatment of esters 3a,c with sodium hydroxide gave imides, 4a,c . Methylation of 3a and 2 with diazomethane gave the N-3 methyl derivative ( 6 ) and a mixture of the N-3, O-dimethyl derivative ( 9 ), the N-1, N-3-dimethyl derivative ( 10 ) and the O-methyl derivative ( 11 ), respectively. 5-Carbamoyl-1-methylimidazolium-4-olate ( 7 ) and its 4-carbamoyl isomer ( 16 ) were prepared from 2-aminopropanediamides 8 and 15 , respectively. Treatment of the imidazolium compound ( 10 ) with aqueous potassium hydroxide gave the recyclized product, 1-methyl-5-methylcarbamoylimidazolium 4-olate ( 18 ). Methyl derivatives 6, 7 , and 9 except 16 demonstrated the complete lack of antitumor activity against Lewis lung carcinoma or sarcoma 180 in mice. 相似文献
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Moriguchi Isamu Tsujigo Yoshihiro Teraoka Yasutake Kagawa Shuichi 《Journal of Sol-Gel Science and Technology》2000,19(1-3):227-230
Synthesis of ZrO2 and hetero-layered TiO2/ZrO2 ultrathin films was investigated by two-dimensional sol-gel process assisted by n-octadecylacetoacetate (C18AA). When a hexane solution of tetrabutoxyzirconium (TBZ) and C18AA was spread on the water surface, Zr-based gel films stabilized with C18AA were formed at the air/water interface. After deposition on substrates, the gel films were successfully transformed into ZrO2 ultrathin films by heating at 773 K for 0.5 h, the thickness of which was controllable on the order of sub-nanometer level by the number of gel-layer deposition and the molar ratio of [TBZ]/[C18AA]. Well-organized hetero-multilayers composed of ultrathin TiO2 and ZrO2 layers could be fabricated by the alternate deposition of C18AA-stabilized Ti- and Zr-gel films. 相似文献
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Analysis of single-cell differences by use of an on-chip microculture system and optical trapping 总被引:1,自引:0,他引:1
Y Wakamoto I Inoue H Moriguchi K Yasuda 《Fresenius' Journal of Analytical Chemistry》2001,371(2):276-281
A method is described for continuous observation of isolated single cells that enables genetically identical cells to be compared; it uses an on-chip microculture system and optical tweezers. Photolithography is used to construct microchambers with 5-microm-high walls made of thick photoresist (SU-8) on the surface of a glass slide. These microchambers are connected by a channel through which cells are transported, by means of optical tweezers, from a cultivation microchamber to an analysis microchamber, or from the analysis microchamber to a waste microchamber. The microchambers are covered with a semi-permeable membrane to separate them from nutrient medium circulating through a "cover chamber" above. Differential analysis of isolated direct descendants of single cells showed that this system could be used to compare genetically identical cells under contamination-free conditions. It should thus help in the clarification of heterogeneous phenomena, for example unequal cell division and cell differentiation. 相似文献
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Y. Yoshida Y. Ino K. Matsumuro T. Watanabe H. Fujita K. Hayakawa K. Yukihira K. Ogai K. Moriguchi Y. Harada H. Soejima 《Hyperfine Interactions》2016,237(1):130
A prototype Mössbauer Spectroscopic Microscope is applied for the feasibility study of 57Fe impurity diffusion in Si wafers. A 2nm- 57Fe deposited Si wafer is annealed at 430 °C for 1 hour, and subsequently the 1/3 area of the wafer is further grinded with an angle of 6 degrees to the original surface to get a higher depth resolution for the mapping. Subsequently, the mapping images for Fe\(_{\text {sub}}^{\mathrm {0}}\), Fe\(_{\text {int}}^{\mathrm {0}}\), and Fe\(_{\text {int}}^{\mathrm {+}}\) states are measured separately for the two different areas: one area (A) along the grinded surface, and the other (B) along the original wafer surface crossing through the 57Fe-deposition boundary. By integrating the mapping intensity the diffusivity of each Fe component along the two different directions can be evaluated and compared with an average Fe diffusivity in Si, which is measured by EDS mapping data obtained for the same area. 相似文献
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Y. Ino H. Soejima K. Hayakawa K. Yukihira K. Tanaka H. Fujita T. Watanabe K. Ogai K. Moriguchi Y. Harada Y. Yoshida 《Hyperfine Interactions》2016,237(1):13
A 3D-Mössbauer Spectroscopic Microscope is developed to evaluate Fe impurities in multi-crystalline Si solar cells, which combines the Mössbauer spectroscopic microscope with a scanning electron microscope (SEM), an electron beam induced current (EBIC), an electron backscatter diffraction (EBSD), and an electron energy analyzer (HV-CSA). In addition, a new moving-coil-actuator with a liner encoder of 100 nm-resolution is incorporated for the operations with both a constant velocity and a constant acceleration mode successfully with the same precision as that obtained by the conventional transducers. Furthermore, a new multi-capillary X-ray lens is designed to achieve a γ-ray spot size less than 100 μm in diameter. The new microscope provides us to investigate the space correlation between Fe impurities and the lattice defects such as grain boundaries in multi-crystalline Si solar cells. 相似文献