The complex reflection coefficients Rv(phi,zeta) of a film-substrate system for the parallel (v = p) and perpendicular (v = s) polarizations are examined in detail as functions of the angle of incidence phi(0 </+S 90 degrees) and the reduced normalized film thickness zeta(0 </= zeta </= 1). For definiteness, the reflection of light of wavelength lambda = 0.6328 microm by the air-SiO2-Si system ...

The issue of whether three ITAMs in the TCR zeta chain can transmit qualitatively distinct signals or redundantly amplify TCR-mediated activation signals was extensively investigated using stable hCD8-zeta Jurkat transfectants which contain stepwise deletions of each ITAM or mutations of tyrosine residues in each ITAM of TCR zeta chain. The influence of mutations of each tyrosine residue on red...

The development of an effective and efficient method for discretization of continuous variables is an important problem to be solved in developing generally applicable methods for data mining. In Ho and Scott 1997, we describe a new technique for discretization of continuous variables based on zeta, a measure of strength of association between nominal variables. The old zeta method partitions a...

A conserved sequence motif has been identified in a number of signaling subunits associated with hematopoietic cell antigen receptors. Here, we characterize signaling by a 17 amino acid motif that is triplicated in the T cell antigen receptor zeta chain. Analysis of zeta truncations and constructs containing the isolated motif demonstrates that this motif is sufficient for the induction of both...

PURPOSE It has been reported that a dysfunction of T lymphocytes can be responsible for alteration in immune system in patients with systemic lupus erythematosus (SLE). MATERIAL AND METHODS Using flow cytometric analysis, we determined the abnormalities of T cell receptor zeta (TCR zeta) chain contents in CD4+ T cells of SLE patients. RESULTS We observed a decrease in mean fluorescence inte...

We study the field theories for pinned elastic systems at equilibrium and at depinning. Their beta functions differ to two loops by novel "anomalous" terms. At equilibrium we find a roughness zeta = 0.208 298 04 epsilon + 0.006 858 epsilon(2) (random bond), zeta = epsilon/3 (random field). At depinning we prove two-loop renormalizability and that random field attracts shorter range disorder. We...

Gene modification of hematopoietic stem cells (HSC) with antigen-specific, chimeric, or "universal" immune receptors (URs) is a novel but untested form of targeted immunotherapy. A human immunodeficiency virus (HIV) envelope-specific UR consisting of the extracellular domain of human CD4 linked to the zeta chain of the T cell receptor (CD4 zeta) was introduced ex vivo into murine HSC by retrovi...

T cell activation by specific antigen results in a rapid and long-lasting downregulation of triggered T cell receptors (TCRs). In this work, we investigated the fate of downregulated TCR- CD3-zeta complexes. T cells stimulated by peptide-pulsed antigen-presenting cells (APCs) undergo an antigen dose-dependent decrease of the total cellular content of TCR-beta, CD3-epsilon, and zeta chains, as d...

In 1972, H.L. Montgomery and F. Dyson uncovered a surprising connection between the Theory of the Riemann Zeta function and Random Matrix Theory. For the next few decades, the major developments in the area were the numerical calculations of Odlyzko and conjectures for the moments of the Riemann Zeta function (and other L-functions) found by Conrey, Ghosh, Gonek, Heath-Brown, Hejhal and Sarnak....

We establish a new class of relations among the multiple zeta values ζ(k1, . . . , kl) = ∑ n1>···>nl≥1 1 n k1 1 · · ·n kl k , which we call the cyclic sum identities. These identities have an elementary proof, and imply the “sum theorem” for multiple zeta values. They also have a succinct statement in terms of “cyclic derivations” as introduced by Rota, Sagan and Stein. In addition, we discuss ...