منابع مشابه
Inelastic H+Li and H+Li collisions and non-LTE Li I line formation in stellar atmospheres
Rate coefficients for inelastic collisions between Li and H atoms covering all transitions between the asymptotic states Li(2s,2p,3s,3p,3d,4s,4p,4d,4f )+H(1s) and Li+H are presented for the temperature range 2000–8000 K based on recent cross-section calculations. The data are of sufficient completeness for non-LTE modelling of the Li I 670.8 nm and 610.4 nm features in late-type stellar atmosph...
متن کاملMaciej H . Kotowski and Fei Li
We consider all-pay auctions in the presence of interdependent, affiliated valuations and private budget constraints. For the sealed-bid, all-pay auction we characterize a symmetric equilibrium in continuous strategies for the case of N bidders. Budget constraints encourage more aggressive bidding among participants with large endowments and intermediate valuations. We extend our results to the...
متن کاملMolecular evolution of the Li/li chemical defence polymorphism in white clover (Trifolium repens L.).
White clover (Trifolium repens) is naturally polymorphic for cyanogenesis (hydrogen cyanide release following tissue damage). The ecological factors favouring cyanogenic and acyanogenic plants have been examined in numerous studies over the last half century, making this one of the best-documented examples of an adaptive polymorphism in plants. White clover cyanogenesis is controlled by two, in...
متن کاملHydrogen Desorption/Absorption Properties of Li-Ca-N-H System
Hydrogen storage properties of two ball-milled composites of Ca(NH2)2+2LiH and CaH2+2LiNH2 were investigated as a series of searching studies of high performance hydrogen storage materials. About 4.5 mass% hydrogen is desorbed from about 100 °C and the thermal desorption profiles show a peak around 200 and 220 °C for the composites of CaH2+2LiNH2 and Ca(NH2)2+2LiH, respectively, under a helium ...
متن کاملHydrogen Absorption Properties of Li-Mg-N-H System
Isothermal hydrogen absorption properties of the ball milled mixture of 3Mg(NH2)2 and 8LiH after dehydrogenation at 200 °C under high vacuum were investigated at two different temperatures of 150 and 200 °C. The pressure –composition isotherm (PCT) curve at 200 °C revealed a two-plateaus-like behavior, while the PCT curve at 150 °C showed a single-plateau-like behavior. The hydrogenated phases ...
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ژورنال
عنوان ژورنال: Systematic Biology
سال: 1998
ISSN: 1076-836X,1063-5157
DOI: 10.1080/106351598261120