| 1. |
- Abat, E., et al.
(författare)
-
Study of the response of the ATLAS central calorimeter to pions of energies from 3 to 9 GeV
- 2009
-
Ingår i: Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment. - : Elsevier BV. - 0167-5087 .- 0168-9002 .- 1872-9576. ; 607:2, s. 372-386
-
Tidskriftsartikel (refereegranskat)abstract
- A fully instrumented slice of the ATLAS central detector was exposed to test beams from the SPS (Super Proton Synchrotron) at CERN in 2004. in this paper, the response of the central calorimeters to pions with energies in the range between 3 and 9 GeV is presented. The linearity and the resolution of the combined calorimetry (electromagnetic and hadronic calorimeters) was measured and compared to the prediction of a detector simulation program using the toolkit Geant 4. (C) 2009 Elsevier B.V. All rights reserved.
|
|
| 2. |
- Brooks, BR, et al.
(författare)
-
CHARMM: the biomolecular simulation program
- 2009
-
Ingår i: Journal of computational chemistry. - : Wiley. - 1096-987X .- 0192-8651. ; 30:10, s. 1545-1614
-
Tidskriftsartikel (refereegranskat)
|
|
| 3. |
|
|
| 4. |
- de Val-Borro, M., et al.
(författare)
-
A comparative study of disc-planet interaction
- 2006
-
Ingår i: Monthly notices of the Royal Astronomical Society. - : Oxford University Press (OUP). - 0035-8711 .- 1365-2966. ; 370:529, s. 29-
-
Tidskriftsartikel (refereegranskat)abstract
- We perform numerical simulations of a disc-planet system using various grid-based and smoothed particle hydrodynamics (SPH) codes. The tests are run for a simple setup where Jupiter and Neptune mass planets on a circular orbit open a gap in a protoplanetary disc during a few hundred orbital periods. We compare the surface density contours, potential vorticity and smoothed radial profiles at several times. The disc mass and gravitational torque time evolution are analysed with high temporal resolution. There is overall consistency between the codes. The density profiles agree within about 5 per cent for the Eulerian simulations. The SPH results predict the correct shape of the gap although have less resolution in the low-density regions and weaker planetary wakes. The disc masses after 200 orbital periods agree within 10 per cent. The spread is larger in the tidal torques acting on the planet which agree within a factor of 2 at the end of the simulation. In the Neptune case, the dispersion in the torques is greater than for Jupiter, possibly owing to the contribution from the not completely cleared region close to the planet.
|
|
| 5. |
- Dekundy, A, et al.
(författare)
-
Effects of group I metabotropic glutamate receptors blockade in experimental models of Parkinson's disease
- 2006
-
Ingår i: Brain Research Bulletin. - : Elsevier BV. - 0361-9230. ; 69:3, s. 318-326
-
Tidskriftsartikel (refereegranskat)abstract
- The present study was devoted to investigate the effects of the metabotropic glutamate receptor(mGluR)5 antagonist [(2-methyl-1,3-thiazol-4-yl)ethynyl]pyridine (MTEP) and the mGluR1 antagonist, (3-ethyl-2-methyl-quinolin-6-yl)-(4-methoxy-cyclohexyl)-methanone methanesulfonate (EMQMCM), in animal studies indicative of antiparkinsonian-like activity such as haloperidol-induced catalepsy, hypoactivity in open field following haloperidol, and rotation in rats with unilateral 6-hydroxydopamine(OHDA)-induced lesions of the midbrain dopaminergic system (alone and in combination with L-DOPA). Moreover, antidyskinetic activity of different mGluR ligands was evaluated in the rat model of L-DOPA-induced dyskinesia. Both MTEP (5 mg/kg) and EMQMCM (4 mg/kg) slightly inhibited haloperidol (0.5 mg/kg)-induced catalepsy. However, neither substance reversed the hypoactivity produced by haloperidol (0.2 mg/kg). Although MTEP and not produce significant turning, it inhibited contralateral rotations after L-DOPA (at 5 mg/kg) and alleviated L-DOPA-induced dyskinesia (at 2.5 and 5 mg/kg) in 6-OHDA-lesioned rats. In contrast, mGluR1 antagonists EMQMCM and RS-1-aminoindan-1,5-dicarboxylic acid (AIDA) failed to modify L-DOPA-induced dyskinesia. The results of the present study suggest that either subtype of group I of mGluRs may be involved in the pathologically altered circuitry in the basal ganglia. However, the equivocal results do not strongly support the hypothesis that mGluR1 and mGluR5 antagonists may be beneficial in the symptomatic treatment of Parkinson's disease. However, mGluR5 antagonists may prove useful for the symptomatic treatment Of L-DOPA-induced dyskinesia. (c) 2006 Elsevier Inc. All rights reserved.
|
|
| 6. |
- Lange, Vinzenz, et al.
(författare)
-
Targeted quantitative analysis of Streptococcus pyogenes virulence factors by multiple reaction monitoring
- 2008
-
Ingår i: Molecular & Cellular Proteomics. - 1535-9484. ; 7:8, s. 1489-1500
-
Tidskriftsartikel (refereegranskat)abstract
- In many studies, particularly in the field of systems biology, it is essential that identical protein sets are precisely quantified in multiple samples such as those representing differentially perturbed cell states. The high degree of reproducibility required for such experiments has not been achieved by classical mass spectrometry-based proteomics methods. In this study we describe the implementation of a targeted quantitative approach by which predetermined protein sets are first identified and subsequently quantified at high sensitivity reliably in multiple samples. This approach consists of three steps. First, the proteome is extensively mapped out by multidimensional fractionation and tandem mass spectrometry, and the data generated are assembled in the PeptideAtlas database. Second, based on this proteome map, peptides uniquely identifying the proteins of interest, proteotypic peptides, are selected, and multiple reaction monitoring (MRM) transitions are established and validated by MS2 spectrum acquisition. This process of peptide selection, transition selection, and validation is supported by a suite of software tools, TIQAM (Targeted Identification for Quantitative Analysis by MRM), described in this study. Third, the selected target protein set is quantified in multiple samples by MRM. Applying this approach we were able to reliably quantify low abundance virulence factors from cultures of the human pathogen Streptococcus pyogenes exposed to increasing amounts of plasma. The resulting quantitative protein patterns enabled us to clearly define the subset of virulence proteins that is regulated upon plasma exposure.
|
|
| 7. |
- Siegel, G., et al.
(författare)
-
Ginkgo biloba and its Influence on Nanoplaque Formation and Vascular Function
- 2008
-
Ingår i: Diabetes stoffwechsel und herz. - 1861-7603. ; 17, s. S23-S35
-
Tidskriftsartikel (refereegranskat)abstract
- Background: In a pilot study, we demonstrated the beneficial effects of Ginkgo biloba (EGb 761) on atherosclerotic nanoplaque formation and size, the oxLDL/LDL quotient and the lipoprotein(a) concentration, the increase in superoxide dismutase activity, as well as the cAMP and cGMP concentrations. Method: The measurable variables formerly used were supplemented by a biomarker spectrum, through which the latest parameter and markers of plaque stability and progression, oxidative stress, and inflammation could be determined. Results: In 11 patients with early-stage metabolic syndrome, atherosclerotic nanoplaque formation fell by 14.3 +/- 2.9 (p < 0.0077) and nanoplaque size by 23.4 +/- 3.7 % (p < 0.0004), respectively, after a two-month regime with Ginkgo biloba extract. Superoxide dismutase and glutathione peroxidase (GPx) activities were upregulated by 19.6 +/- 10.0 % (p < 0.0785) and 11.6 +/- 2.3 % (p < 0.001), respectively. The quotient oxLDL/LDL fell by 21.0 +/- 4.3 % (p < 0.002), and lipoprotein(a) concentration by 26.3 t 4.8 % (p < 0.001). The concentrations of cAMP and cGMP were augmented by43.5 12.0% (p < 0.001)and 32.9 +/- 10.4% (p < 0.001), respectively. The serum Call concentration fell by 5.4 +/- 1.6 % (p < 0.0076). We could also show a favourable development of 8-iso-PGF(2 alpha), oxLDL/LDL, SOD, GPx, hsCRP MPO,TNF alpha, TGF beta(1), and MMP-9. Conclusion: Ginkgo with its pleiotropic effects should be assigned a fixed rank among the anti-ageing medical therapeutics.
|
|
