| 1. |
- Abreu, P., et al.
(författare)
-
Study of dimuon production in photon-photon collisions and measurement of QED photon structure functions at LEP
- 2001
-
Ingår i: European Physical Journal C. - : Springer Science and Business Media LLC. - 1434-6044 .- 1434-6052. ; 19:1, s. 15-28
-
Tidskriftsartikel (refereegranskat)abstract
- Muon pair production in the process e+e- → e+e- μ+μ- is studied using the data taken at LEP1 (√s ≃ mz) with the DELPHI detector during the years 1992-1995. The corresponding integrated luminosity is 138.5 pb-1. The QED predictions have been tested over the whole Q2 range accessible at LEP1 (from several GeV2/c4 to several hundred GeV2/c4) by comparing experimental distributions with distributions resulting from Monte Carlo simulations using various generators. Selected events are used to extract the leptonic photon structure function Fγ 2. Azimuthal correlations are used to obtain information on additional structure functions, Fγ A and Fγ B, which originate from interference terms of the scattering amplitudes. The measured ratios Fγ A/Fγ 2 and FγB/Fγ 2 are significantly different from zero and consistent with QED predictions.
|
|
| 2. |
- Abreu, P., et al.
(författare)
-
Search for sleptons in e+e- collisions at √s = 183 to 189 GeV
- 2001
-
Ingår i: European Physical Journal C. - : Springer Science and Business Media LLC. - 1434-6044 .- 1434-6052. ; 19:1, s. 29-42
-
Tidskriftsartikel (refereegranskat)abstract
- Data taken by the DELPHI experiment at centre-of-mass energies of 183 GeV and 189 GeV with a total integrated luminosity of 212 pb-1 have been used to search for the supersymmetric partners of the electrons, muons, and taus in the context of the Minimal Supersymmetric Standard Model (MSSM). The decay topologies searched for were the direct decay (ℓ̃ → ℓx̃), producing acoplanar lepton pairs plus missing energy, and the cascade decay (ℓ → ℓx̃0 2 → ℓγx̃0 1), producing acoplanar lepton and photon pairs plus missing energy. The observed number of events is in agreement with Standard Model predictions. The 95% CL excluded mass limits for selectrons, smuons and staus are mẽ ≤ 87 GeV/c2, mμ̃ ≤ 80 GeV/c2 and mτ̃ 75 GeV/c2, respectively, for values of μ=-200 GeV/c2 and tanβ=1.5.
|
|
| 3. |
|
|
| 4. |
|
|
| 5. |
|
|
| 6. |
- Collins, A., et al.
(författare)
-
Interference elimination in glutamate monitoring with chip integrated enzyme microreactors
- 2001
-
Ingår i: Electroanalysis. - 1040-0397. ; 13:6, s. 425-431
-
Tidskriftsartikel (refereegranskat)abstract
- On-chip enzyme reactors are often used in medical/pharmaceutical analysis due to their inherent advantages, such as high sample throughput, low reagent consumption, stability, reproducibility and low cost. The present work describes a different application of such microreactors, namely, elimination of interfering ascorbate signals in glutamate monitoring using ascorbate oxidase modified silicon chip microreactors of different sizes (5.3 and 0.95 muL). Glutamate was monitored with a previously developed redox hydrogel integrated bienzyme electrode, based on coupled glutamate oxidase and horseradish peroxidase, inserted in a miniaturized flow cell operated at -50 mV (vs. Ag/AgCl). The developed on-line analysis system was characterized with regard to dilution effects, detection limit, response time and interference ability using model solutions and real samples. Off-line in vivo glutamate measurements could be made by injecting rat brain microdialysate samples collected before and after KCl stimulation without any interference of ascorbate, I Within the studied flow rate range (2-25 muL/min), 1 mM and 200 muM ascorbate could he totally eliminated using the larger and the mailer microreactor, respectively.
|
|
| 7. |
- Collins, M D, et al.
(författare)
-
Streptococcus ovis sp. nov., isolated from sheep.
- 2001
-
Ingår i: International journal of systematic and evolutionary microbiology. - 1466-5026. ; 51:Pt 3, s. 1147-50
-
Tidskriftsartikel (refereegranskat)abstract
- Seven strains of an unknown Gram-positive catalase-negative chain-forming coccus-shaped organism isolated from clinical specimens from sheep were characterized by phenotypic and molecular taxonomic methods. Comparative 16S rRNA gene sequencing studies demonstrated that the bacterium represents a new sub-line within the genus Streptococcus. The unknown bacterium was readily distinguished from recognized streptococcal species by biochemical tests and electrophoretic analysis of whole-cell proteins. Based on phylogenetic and phenotypic evidence, it is proposed that the unknown bacterium be classified as Streptococcus ovis sp. nov. The type strain of Streptococcus ovis is CCUG 39485T (= LMG 19174T).
|
|
| 8. |
- Gjertsson, Inger, 1962, et al.
(författare)
-
Impact of transcription factors AP-1 and NF-kappaB on the outcome of experimental Staphylococcus aureus arthritis and sepsis.
- 2001
-
Ingår i: Microbes and infection. - 1286-4579. ; 3:7, s. 527-34
-
Tidskriftsartikel (refereegranskat)abstract
- Staphylococcus aureus infection is, despite adequate antibiotic treatment, a disease characterized by high mortality. The bacterium triggers an exaggerated immune response in the host, which on the one hand acts as an efficient defense, but on the other hand gives rise to tissue damage. In this study we have modulated the hosts response to S. aureus by inhibition of nuclear factor kappaB (NF-kappaB) and activator protein-1 (AP-1)-triggered release of pro-inflammatory cytokines and tissue-destructive proteins, respectively. Mice were administered with antisense oligonucleotides (ODN) to the p65 subunit of NF-kappaB and/or a double-stranded oligonucleotide (mCoAP-1) with homology to the murine AP-1 binding site of collagenase IV gene (metalloproteinase-9; MMP-9), solely or in combination with antibiotics. In mice systemically treated with antisense ODN to NF-kappaB p65 alone, the bacterial burden in the kidneys was significantly increased (P = 0.04) The same tendency was seen when mCoAP-1 was administered either alone or in combination with antibiotics. We also found significantly (P = 0.04) elevated levels of IL-6 in p65 antisense treated mice. Surprisingly, this p65 antisense therapy approach, which has turned out to be highly efficient in amelioration of aseptic arthritis and colitis, failed to change the clinical course of either septic arthritis or sepsis. We suggest that interaction with transcription factors leads to increased bacterial burden in vivo, abrogating the potential benefits of the anti-inflammatory properties exerted by these compounds.
|
|
| 9. |
- Lawson, P A, et al.
(författare)
-
Actinomyces funkei sp. nov., isolated from human clinical specimens.
- 2001
-
Ingår i: International journal of systematic and evolutionary microbiology. - : Microbiology Society. - 1466-5026 .- 1466-5034. ; 51:Pt 3, s. 853-5
-
Tidskriftsartikel (refereegranskat)abstract
- Three strains of a previously undescribed Actinomyces-like bacterium were isolated from human clinical specimens. Phenotypic studies indicated that the strains were members of the genus Actinomyces and were presumptively identified as Actinomyces turicensis. Comparative 16S rRNA gene sequencing studies showed that although the bacterium is phylogenetically closely related to Actinomyces turicensis, it nevertheless constitutes a new sub-line within the genus Actinomyces. Based on phenotypic and molecular chemical and molecular genetic evidence, it is proposed that the unknown Actinomyces-like bacterium from human clinical specimens be classified as Actinomyces funkei sp. nov. The type strain of Actinomyces funkei is CCUG 42773T (= CIP 106713T).
|
|
| 10. |
- Nikolaitchouk, Natalia, 1967, et al.
(författare)
-
Lactobacillus coleohominis sp. nov., isolated from human sources.
- 2001
-
Ingår i: International journal of systematic and evolutionary microbiology. - 1466-5026. ; 51:Pt 6, s. 2081-5
-
Tidskriftsartikel (refereegranskat)abstract
- Four strains of a hitherto unrecognized gram-positive, catalase-negative, facultatively anaerobic, rod-shaped bacterium isolated from human sources were characterized using phenotypic and molecular taxonomic methods. Comparative 16S rRNA gene sequencing demonstrated that the bacterium represents a new subline within the Lactobacillus casei/Pediococcus rRNA group of the genus Lactobacillus. The unknown bacterium was readily distinguished from all other described Lactobacillus species and related taxa by biochemical tests and electrophoretic analysis of whole-cell proteins. On the basis of phylogenetic and phenotypic evidence, it is proposed that the unknown bacterium be classified as Lactobacillus coleohominis sp. nov. The type strain of Lactobacillus coleohominis is CCUG 44007T (= CIP 106820T).
|
|
