64,739 research outputs found
AB-PAS staining in each group after 3,6,12 weeks.
No full text(A-C) AB-PAS staining in the sharm group after 3,6,12 weeks (×100). (D-F) AB-PAS staining in the injury group after 3,6,12 weeks (×100). (G-I) AB-PAS staining in the therapeutic groupafter 3,6,12 weeks (×100). Black arrows:cartilage cells.</p
Canonical Analysis of General Relativity Formulated with the New Metric f^{ab}=(-g)^{\alpha}g^{ab}
No full textIn this short note we investigate canonical formalism for General Relativity
which is formulated with the metric f^{ab}=(-g)^\alpha g^{ab}. We find
corresponding Hamiltonian and we show that constraint structure is the same as
in the standard formulation.Comment: 14 page
Antiatherosclerotic effect of the new Ca++ antagonist sim 6080: "In vitro" and "In vivo studies
No full textAB INITIO CALCULATION FOR THE STATE OF
No full textA. Yiannopoulou, B. Ji, Li Li, M. Li, K. Urbanski, A.M. Lyyra, W.C. Stwalley, and G.-H. Jeung, J. Chem. Phys. 101, 3581 (1994).Author Institution: Campus d'Orsay, (Bât 505), 91405 Orsay Cedex, FranceThe , electronic state of has been recently observed by cw perturbation-facilitated optical-optical double resonance (PFOODR) fluorescence excitation and resolved fluorescence spectroscopic techniques, and compared with configuration interaction . This work presents the ab inition study of the state of , which is also a doubly excited state, 4p+4p. An extensive all-electron configuration interactions were done to find the spectroscopic properties of this state. The binding energy of this state is which is weaker than in the state, . The rovibrational transition properties are also calculated concerning the transitions. The transition dipole moments for the and the are nearly constant for a wide range of the internuclear distances. In both cases, the principal contribution comes from the atomic transition. This work provides for a sufficient set of data for the experimental search for the state of
Ab initio simulations of iron-nickel alloys at Earth's core conditions
No full textWe report ab initio density functional theory calculations on iron–nickel (FeNi) alloys at conditions representative of the Earth's inner core. We test different concentrations of Ni, up to ∼39 wt% using ab initio lattice dynamics, and investigate the thermodynamic and vibrational stability of the three candidate crystal structures (bcc, hcp and fcc). First of all, at inner core pressures, we find that pure Fe transforms from the hcp to the fcc phase at around 6000 K. Secondly, in agreement with low pressure experiments on Fe–Ni alloys, we find the fcc structure is stabilised by the incorporation of Ni under core pressures and temperatures. Our results show that the fcc structure may, therefore, be stable under core conditions depending on the temperature in the inner core and the Ni content. Lastly, we find that within the quasi-harmonic approximation, there is no stability field for FeNi alloys in the bcc structure under core conditions
Model nuclear energy density functionals derived from \emph{ab initio} calculations
No full textWe present the rst application of a new approach, proposed in [Journal of Physics G: Nuclear and Particle Physics, vol. 43, 04LT01 (2016)] to derive coupling constants of the Skyrme energy density functional (EDF) from ab initio Hamiltonian. By perturbing the ab initio Hamiltonian with several functional generators dening the Skyrme EDF, we create a set of metadata that is then used to constrain the coupling constants of the functional. We use statistical analysis to obtain such an ab initioequivalent Skyrme EDF. We nd that the resulting functional describes properties of atomic nuclei and innite nuclear matter quite poorly. This may point out to the necessity of building up the ab initio-equivalent functionals from more sophisticated generators. However, we also indicate that the current precision of the ab initio calculations may be insucient for deriving meaningful nuclear EDFs
Preformation probability of ga-clusters in rare earth nuclei measured by means of the (p, α) reaction
No full textAb initio structure determination from X-ray powder diffraction data
No full textMany important crystalline solids cannot be prepared in the form of single crystals of sufficient size and quality for single crystal X-ray diffraction studies, and in such cases it is essential that structural information can be extracted from powder diffraction data. In this thesis, a number of crystal structures have been determined
directly from X-ray powder diffraction data recorded on a conventional laboratory
instrument, and the limitations of this technique explored using both conventional and new more sophisticated methods of structure solution. This work has focussed mainly on the more complex problem of molecular systems. The Patterson method has been applied to the determination of a simple unknown inorganic structure, lithium perchlorate, whereas conventional direct methods have been used in the determination of a number of organic structures, including the previously unknown crystal structure of 1,3,4,6-tetrathiopentalene-2,5-dione and formylurea - the first previously unknown organic structure containing only light atoms to be solved by this technique. The combined maximum entropy and likelihood method has been applied to determinate two crystal structures, lithium triflate and p-toluenesulphonhydrazide.
Further developments of this technique are also discussed and illustrated in the structure solution of a previously known system. A Monte Carlo algorithm for ab initio crystal structure determination from powder diffraction data has also been developed, and the success of this method demonstrated by its application to the determination of several known structures, and the previously unknown crystal structure of p-bromophenylacetic acid. The effect of data range on the quality of structure solution obtained from both direct methods and the maximum entropy and likelihood method is also discussed
The vanishing author in computer-generated works: a critical analysis of recent Australian case law
No full textAbstract
The use of software is ubiquitous in the creation of many copyright works, yet the requirement in copyright law that every work have a human author who engages in independent intellectual effort means that its use may prevent copyright subsistence. Several recent Australian cases have refocused attention on authorship as an essential criterion of copyright subsistence, and these cases suggest that much computer-produced output may be authorless and thus lack copyright protection. This article, the first in a two-part series, analyses how each case deals with the question of authorship of computer-produced works and why the use of software diminishes copyright protection for a significant number of computer-generated works. The article critiques the application of conventional notions of human authorship developed in the pre-computer age to modern productions and suggests alternative approaches to authorship that satisfy both the major objectives of copyright policy and the need to adapt to the computer age. The article argues that, without a broader judicial approach to authorship of computer-generated works, Parliament must remedy the lacuna in protection for these ‘authorless’ works. Possible solutions for reform are suggested. In a forthcoming article, the author comprehensively examines those reform proposals
Patricius G. Walsh (Ed.), T. Livius. Ab Urbe condita libri XXVI- XXVII. Recognovit P. G. W
No full textWankenne Jules. Patricius G. Walsh (Ed.), T. Livius. Ab Urbe condita libri XXVI- XXVII. Recognovit P. G. W. In: L'antiquité classique, Tome 61, 1992. p. 393
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