Levi A
نویسندگان
چکیده
A novel approach to “direct-write” negative nano-lithography, based on biological specificity, where a proteolytic enzyme is used to etch grooves in a hardened protein layer. We are using trypsin to engrave features in a BSA layer, while flowing the trypsin solution via a nano-pipette (controlled by a SPM) to the surface. Trypsin is a proteolytic enzyme that cleaves very specifically on the carboxyl side of lysine and arginine residues.
منابع مشابه
Operator-valued tensors on manifolds
In this paper we try to extend geometric concepts in the context of operator valued tensors. To this end, we aim to replace the field of scalars $ mathbb{R} $ by self-adjoint elements of a commutative $ C^star $-algebra, and reach an appropriate generalization of geometrical concepts on manifolds. First, we put forward the concept of operator-valued tensors and extend semi-Riemannian...
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متن کاملOn the Descent of Levi Factors
Let G be a linear algebraic group over a field k of characteristic p > 0, and suppose that the unipotent radical R of G is defined and split over k. By a Levi factor of G, one means a closed subgroup M which is a complement to R in G. In this paper, we give two results related to the descent of Levi factors. First, suppose ` is a finite Galois extension of k for which the extension degree [` : ...
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We study singular real-analytic Levi-flat hypersurfaces in complex projective space. We give necessary and sufficient conditions for such a hypersurface to be a pullback of a real-analytic curve in C via a meromorphic function. We define the rank of a real hypersurface and study the connections between rank, degree, and the type and size of the singularity for Levi-flat hypersurfaces. Finally, ...
متن کاملRita Levi-Montalcini (1909-2012)
Levi-Montalcini and her twin sister Paola were born on 22 April 1909 in Turin, Italy, to her father, Adamo Levi, an electrical engineer and mathematician, and mother, Adele Montalcini. In her autobiography she describes her family atmosphere as wonderful, loving, and with reciprocal devotion. Her father was a very traditional man and his daughters were not allowed to pursue a professional caree...
متن کاملHolomorphic Motion of Circles through Affine Bundles
The pivotal topic of this paper is the study of Levi-flat real hypersurfaces S with circular fibers in a rank 1 affine bundle A over a Riemann surface X. (To say that S is Levi-flat is to say that S admits a foliation by Riemann surfaces; equivalently, in the language of [SuTh], S may be said to prescribe a holomorphic motion of circles through A.) After setting notation and terminology in §2 w...
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