Results From May to October in 2004, at Yi'an Village of Houzhai Street in Yiwu City, the vector capacities of anopheles hurcanus sinensis were 0.819, 0.882, 5.382, 1.506, 0.149, and 0.004 respectively, while basic reproduction rates 8.19, 8.82, 53.82, 15.06, 1.49 and 0.04 accordingly.
The lacC cDNA without its signal sequence was cloned into the expression vector pPIC9K through the pPIC9 plasmid and transformed into the Pichia pastoris strain GS115.The positive transformant was cultured at 20℃ in BMM medium containing 0.3mmol/L CuSO_4 and 0.8% alanine, with the yield of the recombinant laccase rLacC being 1.62×10~4 U/L after a 9-day cell growth.
In the experinient of single flea transmission,the infection potential,embolic potential,trans -mission potential,survival potential of embolus,vector efficiency,vector index were 0.97,0.55,0. 63,0.23,0.34 and 0.08 respectively.
The nets hung for 180 d after impregnated with the insecticide and the knockdown power was still between 8.57 and 16.31 min for Anopheles vector, and resuming breeding for 24 h, the mortality was still 100%.
Production medium was optimized for antibiotic production.
We consider a nonlinear parabolic system describing compressible miscible displacement in a porous medium .
The objective of this paper is to deal with a kind of fuzzy linear programming problem based on interval-valued fuzzy sets (IVFLP) through the medium of procedure that turns IVFLP into parametric linear programming via the mathematical programming.
The conclusion that the equilibrium is the continuous function of the dilution rate and substrate concentration in medium in a certain range is concluded.
Many food algae and red tide algae were cultivated in the f/2 medium, and the nitric oxide (NO) concentration of the medium and the cell density were determined.
We give explicit systems of generators of the algebras of invariant polynomials in arbitrary many vector variables for the classical reflection groups (including the dihedral groups).
The least upper bound for the degrees of elements in a system of generators turns out to be independent of the number of vector variables.
(HereM3 denotes the vector space of 3×3 matrices over k andp>amp;gt;3.) The method of proof involves an induction, and is potentially of wide applicability.
A basis is calledmonomial if each of its elements is the result of applying to a (fixed) highest weight vector a monomial in the Chevalley basis elementsYα, α a simple root, in the opposite Borel subalgebra.
The proof is based on a variant of Moser's method using time-dependent vector fields.