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101.
Akihide Hanaki 《Archiv der Mathematik》2018,111(1):43-46
Let p be a prime number. It is known that the standard module of a p-association scheme over a field of characteristic p is indecomposable. By examples, the converse of the above fact is not true. We will prove that, for a schurian association scheme, the standard module is indecomposable if and only if the association scheme is a p-scheme. 相似文献
102.
103.
104.
Takashi Tomiyasu Misa Nonaka Makoto Uchikado Katsuro Anazawa Hayao Sakamoto 《Analytical sciences》2004,20(2):391-393
An analytical method for the determination of total iodine at the ng level in urine, biological materials and foods was investigated. The organic substances were completely decomposed using a mixed solution of nitric, perchloric and sulfuric acids as pretreatment agents at ca. 230 degrees C. Iodine in the resulting solution was analyzed by a kinetic-photometric method based on the catalytic effect of iodine on the oxidation of chlorpromazine by hydrogen peroxide. The relative standard deviation was 1.6% for 100 ng of iodide and the detection limit of the method was 1.6 ng (3sigma). The proposed method was successfully applied to the determination of iodine at ng levels in real samples. 相似文献
105.
Misa V. Jovanovic Edward R. Biehl Robert D. Rosenstein Shirley S. C. Chu 《Journal of heterocyclic chemistry》1984,21(3):661-667
The crystal structure of 10-(2′-pyrazyl)phenothiazine has been determined by the single crystal x-ray diffraction technique. The crystal belongs to the orthorhombic system with a space group of Pbca. The unit cell parameters are a = 10.633(3), b = 7.525(2), and c = 32.984(6)Å, with eight molecules in a unit cell. The final disagreement index, R, is 0.057 for 1944 observed reflections. The central ring of the phenothiazine ring system is in a broad conformation and the 10-(2′-pyrazyl)substituent is attached to the phenothiazine central ring in a boat-axial conformation. This is the first reported phenothiazine whose 10-substituent is perpendicular to the plane bisecting the dihedral angle of the phenothiazine nucleus. Ultraviolet absorption maxima of the title compound in various oxidizing and non-oxidizing medium is reported. These data indicate that the geometry of 3 changes when it is oxidized to its radical-cations and dications. 相似文献
106.
Chuzo Fujimoto Yoshie Muramatsu Misa Suzuki Kiyokatsu Jinno 《Journal of separation science》1991,14(3):178-180
A simple method is described which enables solutes to be collected at an electrically isolated exit after they have been separated by a free solution capillary electrophoretic system. The method is illustrated by the separation of dansyl amino acids using multiple separation capillaries. 相似文献
107.
Misa V. Jovanovic Edward R. Biehl Patrice De Meester Shirley S. C. Chu 《Journal of heterocyclic chemistry》1986,23(3):797-800
The compound 10-phenylpyrido[3,2-b][1,4]benzothiazine 5-oxide, 1 , has been obtained in nearly quantitative yield oxidation of 10-phenylpyrido[3,2-b][1,4]benzothiazine with oxygen in dioxane solution. The 13C nmr chemical shift assignments of 1 are reported. Its structure has been determined by X-ray single crystal methods. The crystals of 1 are monoclinic, space group P21/n. There are four molecules in a unit-cell of dimensions a = 12.347(3), b = 12.947(3), c = 8.987(1)Å, β = 106.73(1)° and V = 1375.8(5) Å3. The central ring is in a boat conformation and the sulfoxide oxygen atom occupies the axial position. The folding angle between the planes of the pyrido and the benzo planes is 161.55(9)°. 相似文献
108.
Patrice de Meester Shirley S. C. Chu Misa V. Jovanovic Edward R. Biehl 《Journal of heterocyclic chemistry》1985,22(5):1237-1241
The crystal structure of 3′-methoxy-5-phenyl-5,10-dihydrophenarsazine, C19H16AsNO has been determined by the single crystal x-ray diffraction method. The crystals are monoclinic with a = 15.305(6), b = 5.809(2), c = 17.595(6)Å, β = 92.92(2)°, V = 1562.3(1.0Å3, space group P2,/n, Z = 4 and dcalc = 1.485g cm−3. An automatic diffractometer with graphite monochromatized MoKα radiation was used to obtain 1480 observed reflection with I > 3σ(I) at 2θ < 50°. Final R = 0.040 and wR = 0.032. The tricyclic ring is folded with the central ring in a flattened boat conformation. The folding angle between the least-squares planes of the two benzo rings is 164.6(2)°. The 3′-methoxyphenyl group is in a boat-axial conformation with respect to the central ring. 相似文献
109.
Novel 10-heteroarylphenothiazine compounds were prepared in high yields by Ullmann coupling of the appropriate iodoheterocycle, prepared in situ, with a series of phenothiazines. The 13C nmr analysis of titled compounds predicts geometries which are in excellent agreement with available x-ray crystal structure data. The results also indicate significant π-interaction between the electron-rich phenothiazine ring and the π-deficient heterocycles. 相似文献
110.
Toshio Mori Misa Nakane Tsuyoshi Hattori Tsukasa Matsunaga Makoto Ihara Osamu Nikaido 《Photochemistry and photobiology》1991,54(2):225-232
Six new monoclonal antibodies (TDM-2, TDM-3, 64M-2, 64M-3, 64M-4 and 64M-5) specific for ultraviolet (UV) induced DNA damage have been established. In the antibody characterization experiments, two TDM antibodies were found to show a dose-dependent binding to UV-irradiated DNA (UV-DNA), decrease of binding to UV-DNA after cyclobutane pyrimidine dimer photoreactivation, binding to DNA containing cyclobutane thymine dimers, and unchanged binding to UV-DNA after photoisomerization of (6-4)photoproducts to Dewar photoproducts. These results indicated that the epitope of TDM monoclonal antibodies was the cyclobutane pyrimidine dimer in DNA. On the other hand, four 64M antibodies were found to show a dose-dependent binding to UV-DNA, unchanged binding to UV-DNA after cyclobutane pyrimidine dimer photoreactivation, undetectable binding to DNA containing thymine dimers, and decrease of binding to UV-DNA after photoisomerization of (6-4)photoproducts. These results indicated that the epitope of 64M antibodies was the (6-4)photoproduct in DNA. This is the first report of the simultaneous establishment of monoclonal antibodies against the two different types of photolesions from the same mouse. By using these monoclonal antibodies, we have succeeded in measuring both cyclobutane pyrimidine dimers and (6-4)photoproducts in the DNA from human primary cells irradiated with physiological UV doses. 相似文献