Takuya Yamauchi

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Specific identification of enterohemorrhagic Escherichia coli was achieved using microspheres coated with overoxidized polypyrrole. The microspheres are well dispersed in aqueous media, and they specifically, spontaneously, and efficiently bind E. coli O157:H7 through surface area effects. In addition, we found that light-scattering by a single microsphere(More)
Let k be the function field of a curve C over a finite field. Let X be a proper smooth curve over k. Then there exists a regular model X which is proper and flat over C. Assume that the Q`-coefficient Gal(ksep/k)-representation H1 ét(X ×Spec k Spec k ,Q`) is a direct sum of 2 dimensional irreducible representations. Let C0 denote the set of closed points of(More)
Let E be a central Q-curve over a polyquadratic field k. In this article we give an upper bound for prime divisors of the order of the k-rational torsion subgroup Etors(k) (see Theorems 1.1 and 1.2). The notion of central Q-curves is a generalization of that of elliptic curves over Q. Our result is a generalization of Theorem 2 of Mazur [12], and it is a(More)
Let A 11 be the moduli space of (1, 11)-polarized abelian surfaces with a canonical level structure. Let χ be a primitive character of order 5 with conductor 11. In this paper we construct five endoscopic lifts Πi, 0 6 i 6 4 from two elliptic modular forms f ⊗ χ of weight 2 and g ⊗ χ of weight 4 with complex multiplication by Q( √ −11) such that Πi∞ gives a(More)
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