522 research outputs found
Search for the disappearance of muon antineutrinos in the NuMI neutrino beam
We report constraints on muon antineutrino oscillation parameters that were obtained by using the two MINOS detectors to measure the 7% antineutrino component of the NuMI neutrino beam. In the Far Detector, we select 130 events in the charged-current muon antineutrino sample, compared to a prediction of 136.4 +/- 11.7(stat) ^{+10.2}_{-8.9}(syst) events under the assumption |dm2bar|=2.32x10^-3 eV^2, snthetabar=1.0. A fit to the two-flavor oscillation approximation constrains |dm2bar|<3.37x10^-3 eV^2 at the 90% confidence level with snthetabar=1.0
Photophysics of cage/guest assemblies : photoinduced electron transfer between a coordination cage containing osmium(II) luminophores, and electron-deficient bound guests in the central cavity
An octanuclear cubic Os4Zn4 coordination cage, containing Os(II) tris-diimine units at four of the eight vertices which are good photoelectron donors from their 3MLCT excited state, performs photoinduced electron transfer to electron-accepting organic guests which bind in the central cavity in water via the hydrophobic effect: the resulting charge-separated states have lifetimes of ca. 200 ps and have been characterized by transient absorption spectroscopy
Application of Probiotic Bacteria to Functional Foods
End of Project ReportProbiotic cultures are described as live microbial feed supplements that
improve intestinal microbial balance and are intended for maintenance of
health or prevention, rather than the curing of disease. The demand for
probiotic foods is increasing in Europe, Japan and the U.S. reflecting the
heightened awareness among the public of the relationship between diet
and health.
Traditionally, the most popular food delivery systems for these cultures have
been freshly fermented dairy foods, such as yogurts and fermented milks, as
well as unfermented milks with cultures added. However, in the
development of functional foods, the technological suitability of probiotic
strains poses a serious challenge since their survival and viability may be
adversely affected by processing conditions as well as by the product
environment and storage conditions. This is a particular concern, given that
high levels (at least 107 per gram or ml) of live micro-organisms are
recommended for probiotic products.
In previous studies (see DPRC No. 29) the successful manufacture of
probiotic Cheddar cheese harbouring high levels (>108 cfu/g) of the
probiotic Lactobacillus paracasei NFBC 338 strain was reported.
Hence, the overall objective of these studies was to continue the
development and evaluation of Functional Foods containing high levels of
viable probiotic bacteria, with particular emphasis on overcoming the
technological barriers and the identification of strains suited to particular
applications, such as incorporation into Cheddar cheese and spray-dried
powders.Department of Agriculture, Food and the Marin
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Active to Sterile Neutrino Mixing Limits from Neutral-Current Interactions in MINOS
Results are reported from a search for active to sterile neutrino oscillations in the MINOS long-baseline experiment, based on the observation of neutral-current neutrino interactions, from an exposure to the NuMI neutrino beam of 7.07×10^(20) protons on target. A total of 802 neutral-current event candidates is observed in the Far Detector, compared to an expected number of 754±28(stat)±37(syst) for oscillations among three active flavors. The fraction f_s of disappearing ν_μ that may transition to ν_s is found to be less than 22% at the 90% C.L
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