High purity TeO2 crystals are produced to be used for the search for the neutrinoless double beta decay of 130Te. Dedicated production lines for raw material synthesis, crystal growth and surface ...processing were built compliant with radio-purity constraints specific to rare event physics experiments. High sensitivity measurements of radio-isotope concentrations in raw materials, reactants, consumables, ancillaries and intermediary products used for TeO2 crystals production are reported. Production and certification protocols are presented and resulting ready-to-use TeO2 crystals are described.
The authors evaluated the prevalence of colonize by Helicobacter Pylori in 21 adults patients with Barrett's esophagus; 12 males and 9 females; with ranges of age from 21 to 81 years and a medium of ...56.4 years old. It was detected in 23.8% that Helicobacter Pylori was positive in Barrett's esophagus, being quite higher, 26.6% in patients over 50 years old. In the five cases with positive Helicobacter Pylori, the Barrett esophagus presented a fundic gastric mucosa and no one intestinal metaplasia. Helicobacter Pylori was not seen in esophageal biopsies from patients with reflux esophagitis without Barrett's esophagus. The clinical value of the Helicobacter Pylori finding in Barrett's esophagus and its importance of the following at long term must be explained and studied in the future, by the evaluation in numerous patients groups and prolonged follow-up.
The cern axion solar telescope (CAST) Aalseth, C.E.; Arik, E.; Autiero, D. ...
Nuclear physics. Section B, Proceedings supplement,
07/2002, Letnik:
110, Številka:
C
Journal Article
Odprti dostop
A decommissioned LHC test magnet is being prepared as the CERN Axion Solar Telescope (CAST) experiment. The magnet has a field of 9.6 Tesla and length of 10 meters. It is being mounted on a platform ...to track the sun over ±8° vertically and ±45°, horizontally. A sensitivity in axion-photon coupling
gαγγ < 5 × 10
−11
GeV
−1 can be reached for
m
α ≤ 10
−2
eV, and with a gas filled tube-can reach
gαγγ ≤ 10
−10
GeV
−1 for axion masses
m
α < 2
eV.
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