0000000000260899
AUTHOR
W. Herr
Measurement of the proton-antiproton total cross section at the SppS collider by a luminosity dependent method
Abstract The proton-antiproton total cross section was measured at the center-of-mass energy of s = 541 GeV at the S p pS at CERN using a luminosity dependent method. The result σtot=63.0±2.1 mb is in agreement with the luminosity independent measurement performed earlier by the UA4 Collaboration.
The UA4/2 experiment at the CERN SpS collider
Abstract The UA4/2 experiment performed at CERN to measure the ratio of the real to the imaginary part of the forward elastic scattering amplitude is described. The accent is placed on the improvements with respect to the previous UA4 experiment, especially on the much improved design of the high-β insertion and a high-resolution, highly multiplexed scintillating fiber tracking detector.
Transfer of minimally manipulated CMV-specific T cells from stem cell or third-party donors to treat CMV infection after allo-HSCT.
Cytomegalovirus (CMV) infection is a common, potentially life-threatening complication following allogeneic hematopoietic stem cell transplantation (allo-HSCT). We assessed prospectively the safety and efficacy of stem cell-donor-or third-party-donor-derived CMV-specific T cells for the treatment of persistent CMV infections after allo-HSCT in a phase I/IIa trial. Allo-HSCT patients with drugrefractory CMV infection and lacking virus-specific T cells were treated with a single dose of ex vivo major histocompatibility complex-Streptamer-isolated CMV epitope-specific donor T cells. Forty-four allo-HSCT patients receiving a T-cell-replete (D+ repl; n = 28) or T-cell-depleted (D+ depl; n = 16) …
Calcium und Strontium
Der Stoffwechsel von Calcium als einem der wichtigsten Mineralstoffe und als dem Element, das mengenmasig an der Spitze der Korpermineralien steht, wird von jeher mit besonders grosem Interesse betrachtet. Viele Fragen des Calciumstoffwechsels blieben jedoch bisher unvollstandig geklart oder in erster Linie deshalb ungelost, weil man nicht uber die notwendigen methodischen Voraussetzungen verfugte. So sind Versuche, aus der Hohe der Calciumwerte im Blut auf die Wirksamkeit verschiedenartiger Calciumsalze oder den Einflus der Applikationsart zu schliesen, deshalb nur schwer auszuwerten, weil der Organismus bestrebt ist, den Calciumgehalt im Serum auserordentlich konstant zu halten. Es gilt d…
Collective-Mode Enhanced Matter-Wave Optics
International audience; In contrast to light, matter-wave optics of quantum gases deals with interactions even in free space and for ensembles comprising millions of atoms. We exploit these interactions in a quantum degenerate gas as an adjustable lens for coherent atom optics. By combining an interaction-driven quadrupole-mode excitation of a Bose-Einstein condensate (BEC) with a magnetic lens, we form a time-domain matter-wave lens system. The focus is tuned by the strength of the lensing potential and the oscillatory phase of the quadrupole mode. By placing the focus at infinity, we lower the total internal kinetic energy of a BEC comprising 101(37) thousand atoms in three dimensions to …