Results 261 to 270 of about 3,236,986 (300)

[Gap functions and diseases].

Revue medicale suisse, 2006
Gap junctions are highly conserved structures that provide cells with a direct pathway for sharing ions, nutrients and other intracellular messengers, thus participating to the homeostasis of various tissues. Research on transgenic mice has revealed a major involvement of gap junctions proteins (connexins) in several cellular functions.
Florent, Allagnat, Nathalie, Krattinger, Pascal, Nicod, Paolo, Meda, Jacques-Antoine, Haefliger   +4 more
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Density-Functional Theory of the Band Gap

Physical Review B, 1985
Publisher Summary This chapter discusses the density-functional theory (DFT) of the band gap. Emphasizing the dependence of the density functionals on the number of particles brings out the difference between the highest occupied energy of the (N +1)-particle system and the (N + 1) th level of the N-particle system.
, Sham, , Schlüter
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Gap Junctions: Structure, Functions, and Regulation

Journal of Evolutionary Biochemistry and Physiology, 2001
The review presents data on the role of gap junctions in intercellular communication. The review includes information on history of the appearance of this problem. Data are presented on ultrastructure and function of gap junctions as well as on the mechanisms providing for their activity.
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DNA Minicircles with Gaps for Versatile Functionalization

Angewandte Chemie International Edition, 2008
The programmable self-association of molecular units into higher ordered structures plays a key role in the bottom-up construction of nanomaterials. Crucial for the successful supramolecular assembly of nanoobjects, however, is the choice of the functional molecular units themselves.
Rasched, G., Ackermann, D., Schmidt, T., Broekmann, P., Heckel, A., Famulok, M.   +5 more
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Bloch function approach for parametric gap solitons

Optics Letters, 1997
Using a Bloch function approach, we predict the existence of parametric gap solitary waves in a grating structure with quadratic nonlinearity. These waves consist of mutually trapped envelopes at the fundamental frequency and at the second harmonic, which are not sustained by any equivalent cubic nonlinearity.
CONTI, CLAUDIO, Stefano Trillo, Gaetano Assanto   +2 more
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Regularized gap functions for variational problems

Operations Research Letters, 2008
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Regularized Gap Functions and D-Gap Functions for Nonsmooth Variational Inequalities

2001
In this paper, we investigate the regularized gap function due to Auchmuty (1989) and Fukushima (1992), and the D-gap function due to Peng (1997) for a nonsmooth variational inequality problem where the mapping involved is Lipschitz continuous but not necessarily continuously differentiable.
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Superconducting gap equation for strongly energy dependent gap functions

Physica C: Superconductivity and its Applications, 1989
Abstract A two-band model consisting of d θ and d e states, for the HTSC cuprates, leads to a negative value of the McMillan coupling constant λ. With a Frohlich-type potential, this yields physically acceptable, oscillating solutions for the gap function. We use the Green's function method to justify the use of this kernel.
R. Englman, M. Weger, B. Halperin
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Structure-Function Relationships in Gap Junctions

1995
Gap junctions are metabolic and electrotonic pathways between cells and provide direct cooperation within and between cellular nets. They are among the cellular structures most frequently investigated. This chapter primarily addresses aspects of the assembly of the gap junction channel, considering the insertion of the protein into the membrane, the ...
H, Wolburg, A, Rohlmann
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Annular Functions and Gap Series

Bulletin of the London Mathematical Society, 1982
Hwang, J. S., Campbell, D. M.
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