Báo cáo toán học: " Enhancement of the photoelectric performance of dye-sensitized solar cells by using Ag-doped TiO2 nanofiber in TiO2 nanoparticle film as an electrode" pot

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Ngày tải lên: 20/06/2014, 20:20

... knowledge, there are no reports about the chemical content and biological effect of the essential oils of L. resedifolia. There no reports on the essential oils of the species of the genus launaea ... due to the geographical location and the harvesting period. It is noteworthy that the results of this study may be considered as the first report on...

Ngày tải lên: 20/06/2014, 20:20

... screening of hydrazones Schiff and Mannich bases of isatin derivatives. Eur J Med Chem 36:615–623 Antioxidant, antimicrobial, and theoretical studies of the thiosemicarbazone derivative Schiff base ... structure of the IMHC. Figure 2. The effect of test organism toward synthesized compound. Figure 3. The effect of tested fungi toward synthesized co...

Ngày tải lên: 20/06/2014, 20:20

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Ngày tải lên: 05/08/2014, 10:20

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Ngày tải lên: 05/08/2014, 15:20

... modular invariant theory of the general linear group at the prime p = 2. In [8], Hung and the author gave a mod-p analogue of the Singer invariant-theoretic description of the dual of the lambda algebra ... part by the Vietnam National Research Program Grant 140801. On an Invariant-Theoretic Description of the Lambda Algebra 29 where a n,k ∈ F p and a...

Ngày tải lên: 06/08/2014, 05:20

... 1994. Abstract New short and easy computer proofs of finite versions of the Rogers-Ramanujan identities and of similar type are given. These include a very short proof of the first Rogers-Ramanujan identity ... Short and Easy Computer Proofs of the Rogers-Ramanujan Identities and of Identities of Similar Type Peter Paule ∗ Research I...

Ngày tải lên: 07/08/2014, 06:20

... coordinates and leaving A col,s n invariant. By a calculation of the character of S n on the homology of the order complex of L A col , s n and using a formula of Orlik & Solomon [10] we are able ... Lie algebra homology, where it appears in a generic fiber of a projection of the braid arrangement. The study of the intersection lattice of th...

Ngày tải lên: 07/08/2014, 06:20

... proved by examining the considerations in Step 5 and Step 6 of the proof of Theorem 2 in more detail. 4. Another two-parameter family of determinants. The goal of this section is to evaluate the determinant ... inequality being an assumption in the statement of the Theorem. The product in the numerator of the right-hand side of (3.25) consists of factors o...

Ngày tải lên: 07/08/2014, 06:20

... of Connectedness and the Distribution of Number of Components Jason P. Bell Department of Mathematics University of California, San Diego La Jolla, CA 92903-0112, USA (email: jbell@math.ucsd.edu) Edward ... depends on the type of map, and A depends on both the type of map and the surface. See [22] for a proof of (7) for the unrooted case an...

Ngày tải lên: 07/08/2014, 06:20

... of the pth powers of all of the binomial coefficients of order n. There too, the methods described in [PWZ] can show that no closed form exists for specific fixed values of p, but the general question ... for sums of powers of binomial coefficients, J. Comb. Theory Ser. A 52 (1989), 77–83. [McI] Richard J. McIntosh, Recurrences for alternating sums of powers of...

Ngày tải lên: 07/08/2014, 06:22

... semiregular of order 2. If p =2 k − 1 > 7 is a Mersenne prime, these digraphs are also Cayley digraphs of the generalized quaternion group of order 2 k+1 .Inthis case, these digraphs are non-normal Cayley ... Some non-normal Cayley digraphs of the generalized quaternion group of certain orders Edward Dobson Department of Mathematics and Stati...

Ngày tải lên: 07/08/2014, 07:21

... the proof of Lemma 2 in our proof of Theorem 1, we will include the full proof of Lemma 2 there. As examples of these lemmas, for the symmetric group, which has m = n(n − 1)/2 roots, the asymptotic ... covariance form of X.LetY N be the sum of N independent copies of X. For any vector v,letp(v) be the probability for the random walk, and let q(v) the...

Ngày tải lên: 07/08/2014, 08:22

... attention to computing the distinguish- ing numbers of rooted trees. 3 Distinguishing labelings of rooted trees In this section, we give a characterization of the distinguishing labelings of rooted ... the symmetries of G because the only member of the automorphism group of (G, φ) is the identity map. The distinguishing number of G, D(G), is the m...

Ngày tải lên: 07/08/2014, 13:21