Procedure for short-lived particle detection in the OPERA experiment and its application to charm decays

The OPERA experiment, designed to perform the first observation of νμ→ντ oscillations in appearance mode through the detection of the τ leptons produced in ντ charged current interactions, has collected data from 2008 to 2012. In the present paper, the procedure developed to detect τ particle decays, occurring over distances of the order of 1 mm from the neutrino interaction point, is described in detail. The results of its application to the search for charmed hadrons are then presented as a validation of the methods for ντ appearance detection.

Reciprocity as a trigger of social cooperation in contemporary immigration societies?

While the system stabilizing function of reciprocity is widely acknowledged, much less attention has been paid to the argument that reciprocity might initiate social cooperation in the first place. This paper tests Gouldner’s early assumption that reciprocity may act as a ‘starting mechanism’ of social cooperation in consolidating societies. The empirical test scenario builds on unequal civic engagement between immigrants and nationals, as this engagement gap can be read as a lack of social cooperation in consolidating immigration societies. Empirical analyses using survey data on reciprocal norms and based on Bayesian hierarchical modelling lend support for Gouldner’s thesis, underlining thereby the relevance of reciprocity in today’s increasingly diverse societies: individual norms of altruistic reciprocity elevate immigrants’ propensity to volunteer, reducing thereby the engagement gap between immigrants and natives in the area of informal volunteering. In other words, compliance with altruistic reciprocity may trigger cooperation in social strata, where it is less likely to occur. The positive moderation of the informal engagement gap through altruistic reciprocity turns out to be most pronounced for immigrants who are least likely to engage in informal volunteering, meaning low, but also high educated immigrants.

The granulocyte orphan receptor CEACAM4 is able to trigger phagocytosis of bacteria.

Human granulocytes express several glycoproteins of the CEACAM family. One family member, CEACAM3, operates as a single-chain phagocytic receptor, initiating the detection, internalization, and destruction of a limited set of gram-negative bacteria. In contrast, the function of CEACAM4, a closely related protein, is completely unknown. This is mainly a result of a lack of a specific ligand for CEACAM4. By generating chimeric proteins containing the extracellular bacteria-binding domain of CEACAM3 and the transmembrane and cytoplasmic part of CEACAM4 (CEACAM3/4) we demonstrate that this chimeric receptor can trigger efficient phagocytosis of attached particles. Uptake of CEACAM3/4-bound bacteria requires the intact ITAM of CEACAM4, and this motif is phosphorylated by Src family PTKs upon receptor clustering. Furthermore, SH2 domains derived from Src PTKs, PI3K, and the adapter molecule Nck are recruited and associate directly with the phosphorylated CEACAM4 ITAM. Deletion of this sequence motif or inhibition of Src PTKs blocks CEACAM4-mediated uptake. Together, our results suggest that this orphan receptor of the CEACAM family has phagocytic function and prompt efforts to identify CEACAM4 ligands.

Aḥashṿerosh : opera

by A. Goldfaden. Arr. [for piano] by H. A. Russotta

Feryomerṭ ferḳlogṭ : from the opera Dr. Almasada

by A. Goldfaden. For violin arr. by Herman Fiedler

Feryomerṭ ferḳlogṭ. The "wandering jew" : from the opera Dr. Almasada

by A. Goldfaden. For piano arr. by Herman Fiedler

Bar Kochba : opera

by A. Goldfaden. Arr. for violin by Henry A. Russotta

Die schöne Miriam : opera

by S. Mogulesco. Arr. by H. A. Russotto

Bar Kochba. Opera by A. Goldfaden

Für Klavier solo, ohne Gesang und ohne Text

Bar Kochba. Opera by A.Goldfaden

Für Klavier solo, ohne Gesang und ohne Text

Bar Kochba. Opera by A. Goldfaden

Für Klavier solo, ohne Gesang und ohne Text

Bar Kochba. Opera by A.Goldfaden

Für Klavier solo, ohne Gesang und ohne Text

Bar Kochba- Opera by A. Goldfaden

Für Klavier solo, ohne Gesang und ohne Text