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排序方式: 共有48条查询结果,搜索用时 651 毫秒
1.
Amari JV Lian Z Lowden T deAlwis U Levesque P 《Journal of chromatographic science》2003,41(5):234-240
A reversed-phase high-performance liquid chromatography method using evaporative light-scattering detection is developed for the determination of residual octylglucoside (OG) levels after a detergent exchange step for in-process samples of a vaccine antigen. The reversed-phase column not only provides separation of the OG but also functions as an extraction column to remove the vaccine antigen from the sample, thereby eliminating off-line sample manipulations. In addition to column selection, the mobile phase is optimized to enhance extraction and separation. The vaccine antigen is irreversibly bound to the column, allowing nonprotein components to interact with the column for separation and elution. The assay is linear over the range of 0.00050-0.050% OG. Precision tested at 0.0010% and 0.0050% OG is 2.9% and 7.2% relative standard deviation, respectively. The limits of quantitation and detection are determined to be 0.00050 and 0.000125% OG, respectively. Accuracy is determined to be 103 and 98%, based on spike recoveries of 0.0010% and 0.0050% OG, respectively. 相似文献
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A. Amari A. Walther M. Huang M. Afzelius B. Lauritzen H. de Riedmatten 《Journal of luminescence》2010,130(9):1579-1585
We present an efficient photon-echo experiment based on atomic frequency combs [Phys. Rev. A 79 (2009) 052329]. Echoes containing an energy of up to 35% of that of the input pulse are observed in a Pr3+-doped Y2SiO5 crystal. This material allows for the precise spectral holeburning needed to make a sharp and highly absorbing comb structure. We compare our results with a simple theoretical model with satisfactory agreement. Our results show that atomic frequency combs has the potential for high-efficiency storage of single photons as required in future long-distance communication based on quantum repeaters. 相似文献
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Takeshi Ishikawa Yuji Mochizuki Shinji Amari Tatsuya Nakano Shigenori Tanaka Kiyoshi Tanaka 《Chemical physics letters》2008,463(1-3):189-194
We have developed a method named ‘fragment interaction analysis based on local MP2’ (abbreviated as FILM). This method enables us to decompose the interaction energy associated with dispersion interactions into contributions of localized occupied orbitals. In this study, the basis set dependence of the results derived from FILM was examined. The results suggested that the individual ratio of pair correlation energies of selected orbital pairs to the total dispersion interaction was almost independent of the basis set size. As an illustrative example, detailed analysis was performed on the human immunodeficiency virus type 1 protease complexed with lopinavir molecule. 相似文献
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Annals of the Institute of Statistical Mathematics - Wasserstein geometry and information geometry are two important structures to be introduced in a manifold of probability distributions.... 相似文献
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S. Amari S. MéçabihB. Abbar N. BenosmanB. Bouhafs 《Physica B: Condensed Matter》2012,407(17):3639-3645
We have investigated the structural, electronic and magnetic properties of substitutional europium rare earth impurity in cubic CdS and CdSe by employing the ab-initio method. Calculations were performed by using the full potential linearized augmented plane wave plus local orbitals (FP-L/APW+lo) method within the framework of spin-polarized density functional theory (DFT). The electronic exchange-correlation energy is described by generalized gradient approximation GGA and GGA+U (U is the Hubbard correction). The GGA+U method is applied to the rare-earth 4f states. We have calculated the lattice parameters, bulk modulii, the first pressure derivatives of the bulk modulii and the cohesive energies. The calculated densities of states presented in this study identify the metallic behavior of CdEuS and CdEuSe when we use the GGA scheme, whereas when we use the GGA+U, we see that these compounds are half-metallic. 相似文献
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Theoretical and Mathematical Physics - The Skyrme-Faddeev model has planar soliton solutions with the target space ?PN. An Abelian Chern-Simons term (the Hopf term) in the Lagrangian of the... 相似文献