The atmospheric parameters and chemical composition of early B-type giants in h and chi Persei

Atmospheric parameters and surface chemical compositions are presented for eight stars, classified as B1 or B2 but with a range of luminosity classes, in the northern double cluster h and chi Persei. Echelle spectroscopy (covering the wavelength region 3900 to 4700 Ä) and grating spectroscopy (of the Balmer, H? and Hß lines) were analysed using non-LTE synthetic spectra based on LTE line-blanketed atmosphere structures. High microturbulences are found in our sample, and this quantity must be included in the computation of the non-LTE level populations; its effect is generally to decrease the derived metal abundances by typically 0.1 dex but by up to 0.4 dex. Our absolute abundances are in reasonable agreement with those previously found for main sequence B-type stars, while we find some evidence for small abundance variations (particularly for nitrogen) within our sample. One star (BD+56 678) appears to be a spectrum variable and at two epochs shows a highly enriched nitrogen spectrum. Our atmospheric parameters imply that two stars have previously been mis-identified as main sequence objects and a distance modulus, at the higher end of the values previously deduced. The observational HR diagram is consistent with stellar evolutionary models that explicitly include the effects of rotation.

Effect of post-weld-annealing on the tensile deformation characteristics of laser-welded NiTi thin foil

Laser welding is an important process for fabricating complex components involving NiTi shape memory
alloy. As welding is a thermal process, the amount of heat input and the rate of cooling have significant
impact on the microstructure and hence the resultant characteristics of NiTi. In this study, the effect of
laser welding and post-weld-annealing from 573 K to 1173 K on the thermal phase transformation behaviors,
tensile deformation and micro-hardness characteristics of the laser-welded NiTi thin foils were investigated.
It was found that the as-welded sample exhibited inferior super-elasticity compared to the base
material, and the super-elasticity could be partially restored by annealing at 573 K. On the other hand,
annealing of the weldment above the recrystallization temperature would lower the super-elasticity.

Three-mode entanglement by interlinked nonlinear interactions in optical chi((2)) media

We address the generation of fully inseparable three-mode entangled states of radiation by interlinked nonlinear interactions in chi((2)) media. We show how three-mode entanglement can be used to realize symmetric and asymmetric telecloning machines, which achieve optimal fidelity for coherent states. An experimental implementation involving a single nonlinear crystal in which the two interactions take place simultaneously is suggested. Preliminary experimental results showing the feasibility and the effectiveness of the interaction scheme with a seeded crystal are also presented. (C) 2004 Optical Society of America.

Properties of two interlinked Chi(2) interactions in noncollinear phase matching

We present a compact experimental realization of the interaction among five field modes in a chi((2)) nonlinear crystal. The classical evolution of the fields can be analytically described assuming that two of the fields play the role of nondepleted pumps. A peculiar behavior appears that has been experimentally verified. If one of the fields has a nonzero input amplitude, then the other two fields at the output are holographic replicas of the input signal. (C) 2004 Optical Society of America

易經直解Yi jing zhi jie.Le Yi jing expliqué.

Texte et commentaires rassemblés par Wang Shi khoei, de Xin an, et autres. Préface de Shi Da cheng (1660) ; édition soignée publiée par les soins de Zhang Tai yue, de Jiang ling. En bas des pages texte et notes, en haut explications.12 livres.

郭氏易解Ge shi yi jie.Explications de Ge sur le Yi jing.

Par Ge Zi zhang, de Tai he. Préface de l'auteur (1617).15 livres.

鐸書Duo shu.Conseils moraux au peuple.

Développement par Han Lin, surnom Yu gong, de six maximes recommandées par l'empereur Tai zu des Ming (1397) ; ouvrage non daté. Préfaces de Han Lin, de Li Zheng xiu.

Chinois 1016

Contient : IDa xi xi tai li xian sheng xing ji ; II思及先生行蹟Si ji xian sheng xing ji ; III思及艾先生語錄Si ji ai xian sheng yu lu ; IV V楊淇園先生事蹟Yang qi yuan xian sheng shi ji.Vie de Yang Qi yuan ; VI-VIII張彌格爾遺蹟Zhang mi ke er yi ji ; IX悌尼削世紀Di ni xiao shi ji.Vie de Denis

Chinois 1017

Contient : I泰西思及艾先生行述Tai xi si ji ai xian sheng xing shu.Vie du P. Aleni (1582-1649) ; II泰西思及艾先生語錄Tai xi si ji ai xian sheng yu lu.Propos du P. Aleni

勑諭Chi yu.Décrets impériaux.

Trois décrets faisant l'éloge du P. Adam Schall (1651).