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101.
Tachi T Hase T Okamoto Y Kaji N Arima T Matsumoto H Kondo M Tokeshi M Hasegawa Y Baba Y 《Analytical and bioanalytical chemistry》2011,401(7):2301-2305
Microchip analysis is a promising method for therapeutic drug monitoring. This led us to evaluate a microchip-based fluorescence
polarization immunoassay (FPIA) system for point-of-care testing on patients being treated with theophylline. The sera were
collected from 20 patients being treated with theophylline. Fluorescence polarization was measured on the microchip and theophylline
concentrations in serum were obtained. Regression analysis of the correlations was done between the results given by the microchip-based
FPIA and the conventional cloned enzyme donor immunoassay (CEDIA), and between the results given by the microchip-based FPIA
and the conventional particle-enhanced turbidimetric inhibition immunoassay (PETINIA). We successfully carried out a quantitative
analysis of theophylline in serum at values near its therapeutic range in 65 s. The results obtained by the microchip-based
FPIA correlated well with CEDIA and PETINIA results; the correlation coefficients (R
2) were 0.986 and 0.989, respectively. The FPIA system is a simple and rapid method for point-of-care testing of drugs in serum,
and its accuracy is the same as the conventional CEDIA and PETINIA. It is essential to use real samples from patients and
to confirm good correlations with conventional methods for a study on the realization of microchip. 相似文献
102.
103.
Yasuharu Yoshimi Kosuke Kobayashi Keisuke Nishikawa Kousuke Maeda Tatsuya Itou Minoru Hatanaka 《Tetrahedron letters》2010,51(17):2332-6179
Radical addition to a glyoxylic oxime ether was accomplished under mild conditions using an alkyl radical generated from a free carboxylic acid via photochemical decarboxylation. The photoreaction provided an efficient route to α-substituted α-aminoesters from carboxylic acids and oxime ether. 相似文献
104.
Hidemi Nagao Masayoshi Nakano Kiyoshi Nishikawa Kizashi Yamaguchi 《International journal of quantum chemistry》2001,84(4):401-408
We investigate the quantum dynamics of two‐boson and two‐level systems interacting with a one‐mode photon field. The time evolution of the population for each state is calculated in terms of the Jaynes–Cummings model. We find the collapses and revivals of the order parameter for the Bose–Einstein condensation. © 2001 John Wiley & Sons, Inc. Int J Quantum Chem 84: 401–408, 2001 相似文献
105.
Polycatenar materials composed of a four-aromatic-ring core, with either a bulky or end-branched perfluorinated moiety attached at one end through a methylene spacer group, and three peripheral alkoxy chains of varying length (the carbon number n = 4, 6, 8, 10, 12, 14, 16) on the other end-ring, were synthesized to investigate the roles of the chemical structure of the compositional segments in relation to liquid crystalline phase formation. It was found that a homologous series of polycatenar materials exhibited a variety of liquid crystalline phases strongly dependent on the length of the peripheral alkyl chains. Moreover it was shown that changes in the spacer group and in the structure of the perfluorinated segment had a significant influence on mesophase formation. 相似文献
106.
Hirotsugu Minami Wanhong Cai Tatsuya Kusumoto Kaiji Nishikawa Qiangbin Zhang Sadanobu Inoue Ikuo Atsuya 《Analytical sciences》2003,19(10):1359-1363
Isotope dilution analysis of the sub-microg l(-1) levels of selenite and selenate in natural water samples by microwave-induced nitrogen plasma mass spectrometry (MIP-MS) was performed. An appropriate amount of a spike solution containing 78Se-selenite and 78Se-selenate was added to the natural water sample to be analyzed. Both analytes in the water were then concentrated simultaneously by passing the sample through a column that was filled with an anionic exchange resin. After the concentration process, all of the selenite and some of the selenate on the resin were eluted by 0.03 M nitric acid. The residual selenate was eluted by 0.13 M nitric acid. The eluted sample solutions were injected into MIP-MS, and isotope dilution analyses were carried out. Selenite and selenate concentrations as low as 0.01 microg l(-1) in the natural water sample were successfully determined by the proposed method. 相似文献
107.
We construct a supersymmetric left–right model in four dimension with gauge-Higgs unification starting from a SU(3)c×SU(4)w×U(1)B−L gauge symmetry in five dimension. The model has several interesting features, such as, the CKM mixings in the quark sector are naturally small while for the neutrino sector it is not, light neutrino masses can be generated via the seesaw mechanism in the usual way, and the model has a U(1)R symmetry which naturally forbid dimension five proton decay operators. We also discuss the grand unification of our model in SO(12) in five dimensions. 相似文献
108.
Yukihiro Nishikawa 《Studies in Applied Mathematics》2007,119(1):1-71
We develop the exact WKB analysis of the P II hierarchy introduced by Gordoa et al. [ 5 ] in this paper; our particular interest is in the relation between the Stokes geometry of a higher order Painlevé equation in the hierarchy and that of its underlying Lax pair. An important observation is that Stokes curves of the Painlevé equation may cross, reflecting the higher order character of the equation, and in a neighborhood of the crossing point an unexpected degeneracy of the Stokes geometry of the Lax pair may occur along a curved ray emanating from the crossing point. 相似文献
109.
110.
An electronic gas-flow controller system called Advanced Flow Control (AFC), which controls not only carrier gas pressure at the column inlet but also the total gas flow including the split flow, was designed and evaluated. BASIC programming of repetitive analyses of standard mixtures under varied split ratios and pressure programs allowed automated optimization of those conditions for the desired column loading and resolution between adjacent peaks. 相似文献