A Novel Bile Acid-based Receptor for Recognition of Adenine Derivatives

A deoxycholic acid-derived receptor was synthesized by incorporating uracil units at 3α and 12α positions. The receptor showed high affinity for steroidal bis-adenine derivatives in CDCl₃.     

A study of redundancy of some variables in covariate discriminant analysis

The redundancy of some variables in discriminant analysis and its tests were developed by Rao (1946,Sankhyā,7, 407–414; 1948,Biometrika,35, 58–79, 1970,Essays in Probability and Statistics, (eds. R. C. Boseet al.), 587–602, Univ. of North Carolina Press, Chapel Hill), and were further studied by McKay (1977,J. Roy. Statist. Soc. Ser. B,39, 371–380) and Fujikoshi (1982,Ann. Inst. Statist. Math.,34, 523–530). These are now extended to the most general situation which includes redundancy in covariate as well as main variables in discrimination between two or more groups. The likelihood ratio test is derived in a closed form. An alternative test is also suggested.     

Test for a specified signal when the noise covariance matrix is unknown

In the univariate case it is well known that the one sided t test is uniformly most powerful for the null hypothesis against all one sided alternatives. Such a property does not easily extend to the multivariate case. In this paper, a test derived for the hypothesis that the mean of a vector random variable is zero against specified alternatives, when the covariance matrix is unknown. This test depends on the given alternatives and is more powerful than Hotelling's T². The results are derived both for real and complex vector observations and under normal and spherical distributions. The properties of the proposed tests are investigated in detail when a single alternative is specified.     

Uniform distribution on a Stiefel manifold

We derive various results for the uniform distribution on a Stiefel manifold and propose a test of uniformity.     

Few-Nucleon System Dynamics Studied via Deuteron–Deuteron Breakup Reactions at 160 MeV

An experiment, with the deuteron beams at energy of 160 MeV impinging on the liquid deuterium target, was carried out using the BINA detector at KVI, in Groningen, the Netherlands. Data were collected for the purpose of obtaining high precision differential cross-sections for the deuteron break-up reaction. The elastic scattering channel was also measured alongside for the purpose of cross-section normalization.     

Investigations of Few-Nucleon System Dynamics in Medium Energy Domain

Precise and large set of cross sections, vector A _x , A _y and tensor A _xx , A _xy , A _yy analyzing powers for the ¹ H(d, pp)n breakup reactions were measured at 100 and 130 MeV deuteron beam energies with the use of the SALAD and BINA detectors at KVI and Germanium Wall setup at FZ-Jülich. Results are compared with various theoretical approaches which model the three-nucleon (3N) system dynamics. The calculations are based on different two-nucleon (2N) potentials which can be combined with models of the three-nucleon force (3NF) and other pieces of the dynamics can also be included like the Coulomb interaction and relativistic effects. The cross sections data reveal seizable 3NF and Coulomb force influence. In case of analyzing powers very low sensitivity to the effects was found and the data are well describe by 2N models only. At 130 MeV for A _xy serious disagreements appear when 3NF models are included into calculations.     

Static Dielectric Constants and Kirkwood Correlation Factor of the Binary Mixtures of N-Methylformamide with Formamide,N,N-Dimethylformamide and N,N-Dimethylacetamide

Static dielectric constant values of the binary mixtures of N-methylformamide with formamide, N,N-dimethylformamide and N,N-dimethylacetamide have been measured in the whole composition range at 303 K. The Kirkwood correlation factor values of the amide–amide mixtures were determined from the measured values of the static dielectric constant and high-frequency limit dielectric constant. The evaluated values of the excess dielectric constant and deviation in the Kirkwood correlation factor infer that deviations of their mixture values occur from the mole-fraction mixture law. Results confirm that there are strong hydrogen-bond interactions between unlike molecules of amide–amide mixtures and that 1:1 complexes are formed.     

铁镍钴矩磁合金的铁心损耗

本文研究了经过纵向磁退火的铁镍钴合金带的铁心损耗,发现P/f-f曲线具有明显的反常行为。用180°畴壁移的反常涡流损耗理论模型做了解释。并提出一些减小损耗的可能途径。