| 1. |
|
|
| 2. |
- Abelev, Betty, et al.
(författare)
-
Long-range angular correlations on the near and away side in p-Pb collisions at root S-NN=5.02 TeV
- 2013
-
Ingår i: Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics. - : Elsevier BV. - 0370-2693. ; 719:1-3, s. 29-41
-
Tidskriftsartikel (refereegranskat)abstract
- Angular correlations between charged trigger and associated particles are measured by the ALICE detector in p-Pb collisions at a nucleon-nucleon centre-of-mass energy of 5.02 TeV for transverse momentum ranges within 0.5 < P-T,P-assoc < P-T,P-trig < 4 GeV/c. The correlations are measured over two units of pseudorapidity and full azimuthal angle in different intervals of event multiplicity, and expressed as associated yield per trigger particle. Two long-range ridge-like structures, one on the near side and one on the away side, are observed when the per-trigger yield obtained in low-multiplicity events is subtracted from the one in high-multiplicity events. The excess on the near-side is qualitatively similar to that recently reported by the CMS Collaboration, while the excess on the away-side is reported for the first time. The two-ridge structure projected onto azimuthal angle is quantified with the second and third Fourier coefficients as well as by near-side and away-side yields and widths. The yields on the near side and on the away side are equal within the uncertainties for all studied event multiplicity and p(T) bins, and the widths show no significant evolution with event multiplicity or p(T). These findings suggest that the near-side ridge is accompanied by an essentially identical away-side ridge. (c) 2013 CERN. Published by Elsevier B.V. All rights reserved.
|
|
| 3. |
- Abelev, Betty, et al.
(författare)
-
Measurement of prompt J/psi and beauty hadron production cross sections at mid-rapidity in pp collisions at root s=7 TeV
- 2012
-
Ingår i: Journal of High Energy Physics. - 1029-8479. ; :11
-
Tidskriftsartikel (refereegranskat)abstract
- The ALICE experiment at the LHC has studied J/psi production at mid-rapidity in pp collisions at root s = 7 TeV through its electron pair decay on a data sample corresponding to an integrated luminosity L-int = 5.6 nb(-1). The fraction of J/psi from the decay of long-lived beauty hadrons was determined for J/psi candidates with transverse momentum p(t) > 1,3 GeV/c and rapidity vertical bar y vertical bar < 0.9. The cross section for prompt J/psi mesons, i.e. directly produced J/psi and prompt decays of heavier charmonium states such as the psi(2S) and chi(c) resonances, is sigma(prompt J/psi) (p(t) > 1.3 GeV/c, vertical bar y vertical bar < 0.9) = 8.3 +/- 0.8(stat.) +/- 1.1 (syst.)(-1.4)(+1.5) (syst. pol.) mu b. The cross section for the production of b-hadrons decaying to J/psi with p(t) > 1.3 GeV/c and vertical bar y vertical bar < 0.9 is a sigma(J/psi <- hB) (p(t) > 1.3 GeV/c, vertical bar y vertical bar < 0.9) = 1.46 +/- 0.38 (stat.)(-0.32)(+0.26) (syst.) mu b. The results are compared to QCD model predictions. The shape of the p(t) and y distributions of b-quarks predicted by perturbative QCD model calculations are used to extrapolate the measured cross section to derive the b (b) over bar pair total cross section and d sigma/dy at mid-rapidity.
|
|
| 4. |
- Bach, Anders, et al.
(författare)
-
A high-affinity, dimeric inhibitor of PSD-95 bivalently interacts with PDZ1-2 and protects against ischemic brain damage
- 2012
-
Ingår i: Proceedings of the National Academy of Sciences of the United States of America. - : National Academy of Sciences. - 0027-8424 .- 1091-6490. ; 109:9, s. 3317-3322
-
Tidskriftsartikel (refereegranskat)abstract
- Inhibition of the ternary protein complex of the synaptic scaffolding protein postsynaptic density protein-95 (PSD-95), neuronal nitric oxide synthase (nNOS), and the N-methyl-D-aspartate (NMDA) receptor is a potential strategy for treating ischemic brain damage, but high-affinity inhibitors are lacking. Here we report the design and synthesis of a novel dimeric inhibitor, Tat-NPEG4(IETDV)(2) (Tat-N-dimer), which binds the tandem PDZ1-2 domain of PSD-95 with an unprecedented high affinity of 4.6 nM, and displays extensive protease-resistance as evaluated in vitro by stability-measurements in human blood plasma. X-ray crystallography, NMR, and small-angle X-ray scattering (SAXS) deduced a true bivalent interaction between dimeric inhibitor and PDZ1-2, and also provided a dynamic model of the conformational changes of PDZ1-2 induced by the dimeric inhibitor. A single intravenous injection of Tat-N-dimer (3 nmol/g) to mice subjected to focal cerebral ischemia reduces infarct volume with 40% and restores motor functions. Thus, Tat-N-dimer is a highly efficacious neuroprotective agent with therapeutic potential in stroke.
|
|
| 5. |
- Bach, Anders, et al.
(författare)
-
Design and synthesis of highly potent and plasma-stable dimeric inhibitors of the PSD-95-NMDA receptor interaction
- 2009
-
Ingår i: Angewandte Chemie International Edition. - : Wiley-VCH. - 1433-7851 .- 1521-3773. ; 48:51, s. 9685-9689
-
Tidskriftsartikel (refereegranskat)abstract
- On the double: Dimerization of monomeric peptide ligands towards the PDZ domains of the protein PSD-95 (postsynaptic density 95) leads to potent inhibitors of protein-protein interactions with stability in blood plasma. Optimization of the length of the polyethylene glycol linker results in unprecedented affinity for inhibitors of the PDZ1-2 domain.
|
|
| 6. |
- Bach (Red), Lone-Pia, et al.
(författare)
-
Katalysator
- 2023
-
Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Restaureringskonsten med sina långa tidsperspektiv är i sig hållbar, och den har betydande kunskap att tillföra dagens diskussion. Dess metoder stärker de kulturella och socialt engagerande processer som fler behöver vara delaktiga i för att gemensamt definiera vad som redan är – och som på sikt kommer att bli – vårt kulturarv. Arkitekturen berättar om förfluten tid, länkar ihop oss med tidigare generationer, skapar sammanhang och stabilitet. Den ger oss ramar för social interaktion, skapar tillhörighet till platser, samhörighet med andra människor och är identitetsskapande. I det perspektivet borde återbruk av byggnader och miljöer vara en självklar pusselbit i ett hållbart samhällsbyggande. Men fler behöver se det befintliga som resurser med hög potential, med målet att hitta lösningar för hur man på bästa sätt kan förändra och vidareutveckla utan att betydande värden går förlorade. Får behovet av omställning till ett mer hållbart samhällsbyggande konsekvenser för restaureringskonsten, eller kan dess metoder rent av vara en katalysator för att vidga och förändra vår syn på kunskapsfältet?
|
|
| 7. |
- Bengtsdotter, Charlotta, et al.
(författare)
-
Katalysator : Restaureringskonst 2022–2023
- 2023
-
Bok (refereegranskat)abstract
- Restaureringskonsten med sina långa tidsperspektiv är i sig hållbar, och den har betydande kunskap att tillföra dagens diskussion. Dess metoder stärker de kulturella och socialt engagerande processer som fler behöver vara delaktiga i för att gemensamt definiera vad som redan är – och som på sikt kommer att bli – vårt kulturarv.Arkitekturen berätar om förfluten tid, länkar ihop oss med tidigare generationer, skapar sammanhang och stabiblitet. Den ger oss ramar för social interaktion, skapar tillhörighet till platser, samhörighet med andra människor och är identitetsskapande. I det perspektivet borde återbruk av byggnader och miljöer vara en självklar pusselbit i ett hållbart samhällsbyggande. Men fler behöver se det befintliga som resurser med hög potential, med målet att hitta lösningar för hur man på bästa sätt kan förändra och vidareutveckla utan att betydande värden går förlorade.Får behovet av omställning till ett mer hållbart samhällsbyggande konsekvenser för restaureringskonsten, eller kan dess metoder rent av vara en katalysator för att vidga och förändra vår syn på kunskapsfältet?
|
|
| 8. |
- Chi, Celestine N., et al.
(författare)
-
Deciphering the kinetic binding mechanism of dimeric ligands, using a potent plasma-stable dimeric inhibitor of postsynaptic density protein-95 as an example
- 2010
-
Ingår i: Journal of Biological Chemistry. - 0021-9258 .- 1083-351X. ; 285:36, s. 28252-28260
-
Tidskriftsartikel (refereegranskat)abstract
- Dimeric ligands can be potent inhibitors of protein-protein or enzyme-substrate interactions. They have increased affinity and specificity towards their targets due to their ability to bind simultaneously to two binding sites and are therefore very attractive in drug design. However, few studies have addressed the kinetic mechanism of interaction of such bivalent ligands. We have investigated the binding interaction of a recently identified potent plasma-stable dimeric pentapeptide of PDZ1-2 of PSD-95 using protein engineering in combination with fluorescence polarisation, isothermal titration calorimetry and stopped-flow fluorimetry. Our experiments demonstrate that binding occurs via a two-step process, where an initial binding to either one of the two PDZ domains is followed by an intramolecular step, which produces the bidentate complex. We have determined all rate constants involved in the binding reaction and we also find evidence for a conformational transition of the complex. Our data demonstrate the importance of a slow dissociation for a successful dimeric ligand, but also highlight the possibility of optimizing the intramolecular association rate. The results may therefore aid the design of dimeric inhibitors in general.
|
|
| 9. |
- Fei, Yuanyuan, et al.
(författare)
-
Experiments of closely coupled monopoles with load matching in a random field
- 2006
-
Ingår i: First European Conference on Antennas and Propagation EuCAP, 2006. - 9789290929376
-
Konferensbidrag (refereegranskat)abstract
- Recent theoretical and simulation studies reveal that closely coupled antennas with appropriately chosen impedance matching loads can yield desired characteristics of small antenna correlation coefficients and/or high received power levels. However, no experiment has been performed to verify these claims. Here, we describe an experimental setup used to investigate the correlation and received power of closely coupled antennas with impedance matching. Specifically, a two-monopole array with a small antenna spacing 0.05 wavelength and five different matching networks are constructed and measured. Whereas our experimental results largely confirm theoretical predictions, some discrepancies due to simplifications made in the theoretical models are observed.
|
|
| 10. |
- Knudsen, Endre, et al.
(författare)
-
Challenging claims in the study of migratory birds and climate change.
- 2011
-
Ingår i: Biological Reviews. - 1469-185X. ; 86, s. 928-946
-
Tidskriftsartikel (refereegranskat)abstract
- Recent shifts in phenology in response to climate change are well established but often poorly understood. Many animals integrate climate change across a spatially and temporally dispersed annual life cycle, and effects are modulated by ecological interactions, evolutionary change and endogenous control mechanisms. Here we assess and discuss key statements emerging from the rapidly developing study of changing spring phenology in migratory birds. These well-studied organisms have been instrumental for understanding climate-change effects, but research is developing rapidly and there is a need to attack the big issues rather than risking affirmative science. Although we agree poorly on the support for most claims, agreement regarding the knowledge basis enables consensus regarding broad patterns and likely causes. Empirical data needed for disentangling mechanisms are still scarce, and consequences at a population level and on community composition remain unclear. With increasing knowledge, the overall support ('consensus view') for a claim increased and between-researcher variability in support ('expert opinions') decreased, indicating the importance of assessing and communicating the knowledge basis. A proper integration across biological disciplines seems essential for the field's transition from affirming patterns to understanding mechanisms and making robust predictions regarding future consequences of shifting phenologies.
|
|
