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repositories = "Document Server@UHasselt" > : "ACADEMIC PRESS INC" (x)
<< < 4 5 6 7 8 > >>

Found 138 documents, displaying page 6 of 14

Ideal classes of three dimensional Artin-Schelter regular algebras

Author(s) : DE NAEGHEL, Koen , VAN DEN BERGH, Michel
Description : We determine the possible Hilbert functions of graded rank one torsion free modules over three dimensional Artin-Schelter regular algebras. It turns out that, as in the commutative case, they are related to Castelnuovo functions. From this we obtain an intrinsic proof that the space of torsion free ...
Repository : Document Server@UHasselt
Language(s) : English

Time analysis and entry-exit relation near planar turning points

Author(s) : DE MAESSCHALCK, Peter , DUMORTIER, Freddy
Description : The paper deals with canard solutions at very general turning points of smooth singular perturbation problems in two dimensions. We follow a geometric approach based on the use of C-k-normal forms, centre manifolds and (family) blow up, as we did in (Trans. Amer. Math. Soc., to appear). In (Trans. A...
Repository : Document Server@UHasselt
Language(s) : English

Invariant manifolds of dynamical systems close to a rotation: Transverse to the rotation axis

Author(s) : BONCKAERT, Patrick , Fontich, E
Description : We consider one parameter families of vector fields depending on a parameter E such that for epsilon = 0 the system becomes a rotation of R-2 x R-n around {0} x R-n and such that for epsilon > 0 the origin is a hyperbolic singular point of saddle type with, say, attraction in the rotation plane and ...
Repository : Document Server@UHasselt
Language(s) : English

Store-operated Ca2+-channels are sensitive to changes in extracellular pH

Author(s) : KALMAN, Katalin , LASKAY, Gabor , VAN KERKHOVE, Emmy , STEELS, Paul , AMELOOT, Marcel
Description : The sensitivity of store-operated Ca2+-entry to changes in the extra- and intracellular pH (pH(o) and pH(i), respectively) was investigated in SH-SY5Y human neuroblastoma cells. The intracellular Ca2+-stores were depleted either with I mM carbachol (CCH) or with 2 mu M thapsigargin (TG). Extracellul...
Repository : Document Server@UHasselt
Language(s) : English

Novel candidate markers for multiple sclerosis using phage cDNA display.

Author(s) : SOMERS, Klaartje , SOMERS, Veerle , GOVARTS, Cindy , STINISSEN, Piet
Description : Multiple sclerosis (MS) is a chronic, inflammatory disease of the central nervous system, characterized by the presence of focal lesions resulting from myelin breakdown. In the past few years, an important contribution of B cells and autoreactive antibodies has been demonstrated in the pathogenesis ...
Repository : Document Server@UHasselt
Language(s) : English

Premature senescence of the immune system in rheumatoid arthritis and multiple sclerosis patients.

Author(s) : LINSEN, Loes , THEWISSEN, Marielle , GEUSENS, Piet , RAUS, Jef , STINISSEN, Piet
Description : The decline in immunocompetence with age is accompanied by a steadily increasing incidence of autoimmune diseases. A reduced thymic output, which is an important aspect of immunosenescence will induce compensatory auto-proliferation. This process can lead to a premature senescence of T cells and con...
Repository : Document Server@UHasselt
Language(s) : English

Synovial fluid NKT cells display different properties compared to peripheral blood NKT cells in rheumatoid arthritis

Author(s) : LINSEN, Loes , SOMERS, Veerle , THEWISSEN, Marielle , GEUSENS, Piet , RAUS, Jef , STINISSEN, Piet
Description : Natural killer T cells (NKT) are a population of regulatory T cells that co-express an invariant T cell receptor as well as NK cell markers. Several studies have shown that NKT cells are decreased or dysfunctional in autoimmune conditions such as insulin-dependent diabetes mellitus, systemic scleros...
Repository : Document Server@UHasselt
Language(s) : English

The Frobenius semiradical of a Lie algebra

Author(s) : OOMS, Alfons
Description :
Repository : Document Server@UHasselt
Language(s) : English

Ideal classes of three-dimensional Sklyanin algebras

Author(s) : DE NAEGHEL, Koen , VAN DEN BERGH, Michel
Description : In this paper we classify graded reflexive ideals, up to isomorphism and shift, in certain three-dimensional Artin-Schelter regular algebras. This classification is similar to the classification of right ideals in the first Weyl algebra, a problem that was completely settled recently. The situation ...
Repository : Document Server@UHasselt
Language(s) : English

Twisted tensor coproduct of multiplier Hopf algebras

Author(s) : DELVAUX, Lydia
Description : We put a non-trivial comultiplication on the natural tensor product algebra of two multiplier Hopf algebras by means of a "cotwisting map." As a special case we characterize the dual of the Drinfel'd double of an algebraic quantum group. Because any finite-dimensional Hopf algebra is an algebraic qu...
Repository : Document Server@UHasselt
Language(s) : English
<< < 4 5 6 7 8 > >>

Found 138 documents, displaying page 6 of 14