نتایج جستجو برای: 49 are quite uneven
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Four of the five six-membered rings of the title penta-cylic triterpene, C(31)H(48)O(3), adopt chair conformations; the fifth, which has a C=C double bond, adopts an approximate envelope conformation.
The title compound, tetra-potassium tetra-[nickel(II)/iron(III)] penta-kis-(orthophosphate), K3.84Ni0.78Fe3.19(PO4)5, has been obtained from a flux. The structure is isotypic with that of K4MgFe3(PO4)5. The three-dimensional framework is built up from (Ni/Fe)O5 trigonal bipyramids with a mixed Fe:Ni occupancy of 0.799 (8):0.196 (10) and isolated PO4 tetra-hedra, one of which is on a general pos...
In this paper, we describe improvements to the function field sieve (FFS) for the discrete logarithm problem in Fpn , when p is small. Our main contribution is a new way to build the algebraic function fields needed in the algorithm. With this new construction, the heuristic complexity is as good as the complexity of the construction proposed by Adleman and Huang [2], i.e Lpn [1/3, c] = exp((c ...
A photovoltaic (PV) array having multiple cells in series with bypass diodes may exhibit power peaks under uneven irradiation, therefore an algorithm is required to reach the global maximum point (GMPP). While a lot of methods have been proposed literature, they are usually quite complex and does not fully utilize characteristics PV array. This paper first highlights rapid optimized mathematica...
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