Heavy quark physics in N f = 2 QCD Aoki, S.; Burkhalter, R.; Ejiri, S. ...
Nuclear physics. Section B, Proceedings supplement,
03/1999, Volume:
73, Issue:
1
Journal Article
We present a preliminary analysis of the heavy-heavy spectrum and heavy-light decay constants in full QCD, using a tadpole-improved SW quark action and an RG-improved gauge action on a 16
3 × 32 ...lattice with four sea quark masses corresponding to
m
π/
m
ρ ≈ 0.8, 0.75, 0.7, 0.6 and
a
−1 ≈ 1.3 GeV. We focus particularly on the effect of sea quarks on these observables.
We have determined non-perturbative values of the
O(a) improvement coefficient csw in three-flavor dynamical QCD for the RG improved as well as the plaquette gauge actions, using the Schro¨dinger ...functional scheme. Results are compared with 1-loop estimates at weak gauge coupling.
We report on a study of
B mesons on
N
f
= 2 full QCD configurations using an RG-improved gauge action, NRQCD heavy quark action and tadpole-improved clover light quark action. Results on the ...heavy-light spectrum and the decay constants from 16
3 × 32 lattices at
a
−1 ≈ 1.5 GeV are presented, and compared with quenched results obtained with the same action combination at matching lattice spacings.
Cook-chill food prepared by the Catering Department of the Royal Free Hospital was examined over an 8-month period commencing October 1989. Total aerobic viable counts (TAVCs) were performed on 200 ...food specimens which were also examined for Listeria using selective enrichment culture. Ten of 200 food samples tested had TAVCs greater than 10(5) colony forming units (cfu) g-1, and nine of these were from non-vegetarian (meat) dishes. Although most of the food prepared by cook-chill had microbial loads within the limits recommended by current Department of Health guidelines (i.e. less than 10(5) cfu g-1), our findings for the non-vegetarian dishes suggest that extra caution is required when preparing such food. Listeria were not isolated from any food sample. In a survey of listeria faecal carriage, Listeria monocytogenes was isolated from only two of 100 faeces specimens obtained from patients.
We describe three outbreaks of pyemotes dermatitis.
We undertook case-control studies and samples of several suspected materials were taken.
There were 126 cases, with no cases admitted in hospitals. ...Contact which suspected vegetable materials were the only risk factor identified. Among orange picker workers risk factor was the exposure to orange trees, where Pyemotes mite was found.
To our knowledge this kind of occupational risk among orange pickers has not been described before.
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