排序方式: 共有4条查询结果,搜索用时 15 毫秒
1
1.
T Nohara A Imamura M Yamaguchi KI Hidari T Suzuki T Komori H Ando H Ishida M Kiso 《Molecules (Basel, Switzerland)》2012,17(8):9590-9620
A novel ganglioside bearing Neua2-3Gal and Neua2-6Gal structures as distal sequences was designed as a ligand for influenza A viruses. The efficient synthesis of the designed ganglioside was accomplished by employing the cassette coupling approach as a key reaction, which was executed between the non-reducing end of the oligosaccharide and the cyclic glucosylceramide moiety. Examination of its binding activity to influenza A viruses revealed that the new ligand is recognized by Neua2-3 and 2-6 type viruses. 相似文献
2.
A new ternary van der Waals complex of the type rare gas-rare gas'-linear molecule, ArNe-N2O, was investigated using a pulsed molecular beam cavity Fourier transform microwave spectrometer. The rotational spectra of six isotopomers of the trimer were studied in detail. These include Ar20Ne-14N14NO, Ar22Ne-14N14NO, Ar20Ne-15N14NO, Ar22Ne-15N14N0, Ar20Ne-14N15NO and Ar22Ne-14N15NO. Nuclear quadrupole hyperfine structures of the rotational transitions that are due to the one or two 14N nuclei were resolved and analysed. The resulting spectroscopic constants were used to provide structural and dynamical information about the trimer. Based on the quartic centrifugal distortion constants, a harmonic force field analysis was performed to estimate the frequencies of the van der Waals vibrational modes. A perturbation of the electronic charge distribution at the site of the central 14N nucleus of N20 upon complex formation was detected and discussed. Differences of structural parameters of the trimer as compared to those of the respective dimer units are indicative of the presence of significant three-body non-additive contributions to the interaction energy. 相似文献
3.
S. Farjami Shayesteh K. Hidari 《International Journal of Infrared and Millimeter Waves》2002,23(10):1455-1464
Infrared Fourier transform spectroscopy has been used to investigate phonon, plasmon, surface polariton and plasma-longitudinal optical phonon coupling in highly donor doped multi quantum wells (GaAs/Al0.33Ga0.67As) and direct band gap n- type AlXGa1-XAs thin layer on GaAs substrate. Using different samples with different concentration of free carriers. The dispersion equation of coupling modes have been calculated by using the condition which the dielectric functions of samples are zero for longitudinal coupled modes and experimental papameters which have been obtained from the best fit p-polarized oblique incidence far infrared reflection spectra. In MQW samples, the free carriers confined to the well and carriers are quasi two dimensional. So, plasmon- LO phonon coupling occur in the well (GaAs). In n- type AlXGa1-XAs thin layer, the coupled modes consist of three branches of the high, intermediate and low frequency modes. Their frequencies depend on both concentration and alloy composition. To analyses the surface polariton modes we carry out attenuated total reflection (ATR) measurements. In order to support our assignment the magnetic field profiles and surface polariton dispersion curves have been calculated. 相似文献
4.
CHOON KI AHN 《Pramana》2012,78(3):361-374
In this paper, we propose a new adaptive H¥\mathcal H_\infty synchronization strategy, called an adaptive fuzzy delayed feedback H¥\mathcal H_\infty synchronization (AFDFHS) strategy, for chaotic systems with uncertain parameters and external disturbances. Based on Lyapunov–Krasovskii
theory, Takagi–Sugeno (T–S) fuzzy model and adaptive delayed feedback H¥\mathcal H_\infty control scheme, the AFDFHS controller is presented such that the synchronization error system is asymptotically stable with
a guaranteed H¥\mathcal{H}_{\infty } performance. It is shown that the design of the AFDFHS controller with adaptive law can be achieved by solving a linear matrix
inequality (LMI), which can be easily facilitated by using some standard numerical packages. An illustrative example is given
to demonstrate the effectiveness of the proposed AFDFHS approach. 相似文献
1