Now showing items 86-105 of 1815

• #### Calibration of the ALICE Photon Spectromter (PHOS) using the neutral pion to gamma gamma decay ﻿

(Master thesis, 2009-09-01)
The Large Hadron Collider (LHC) is under construction beneath the border between Switzerland and France. If it is successful, it will accelerate and collide protons at 7 T eV per proton in center of mass. Furthermore, it ...
• #### Calibration of the photon spectrometer PHOS of the ALICE experiment ﻿

(Peer reviewed; Journal article, 2019)
The procedure for the energy calibration of the high granularity electromagnetic calorimeter PHOS of the ALICE experiment is presented. The methods used to perform the relative gain calibration, to evaluate the geometrical ...
• #### Can magnetotail reconnection produce the auroral intensities observed in the conjugate ionosphere? ﻿

(Peer reviewed; Journal article, 2009-06)
[1] In a recent case study, Borg et al. (2007) reported that an inverted V structure, caused by a field-aligned potential drop of 30 kV producing very strong X-ray aurora, was found in connection with tail reconnection. ...
• #### Catalysts for Enhanced CO2-CH4 Exchange in Natural Gas Hydrates. An experimental feasibility study of exchange enhancement by use of chemical additives ﻿

(Master thesis, 2013-06-01)
Gas hydrate is a solid state of gas and water at high pressure and low temperature conditions. Vast energy potential is associated with gas hydrates and extensive on-going research aims at addressing the technical viability ...
• #### CDOM absorption properties of natural water bodies along extreme environmental gradients ﻿

(Peer reviewed; Journal article, 2019-09-24)
We present absorption properties of colored dissolved organic matter (CDOM) sampled in six different water bodies along extreme altitudinal, latitudinal, and trophic state gradients. Three sites are in Norway: the mesotrophic ...
• #### Centrality and pseudorapidity dependence of the charged-particle multiplicity density in Xe–Xe collisions at √sNN=5.44 TeV ﻿

(Peer reviewed; Journal article, 2019-12-28)
In this Letter, the ALICE Collaboration presents the ﬁrst measurements of the charged-particle multiplicity density, dNch/dη, and total charged-particle multiplicity, Ntot ch , in Xe–Xe collisions at a centre-of-mass energy ...
• #### Centrality and transverse momentum dependence of inclusive J/ψ production at midrapidity in Pb–Pb collisions at √sNN=5.02 TeV ﻿

(Journal article; Peer reviewed, 2020-06-10)
The inclusive J/ψ meson production in Pb–Pb collisions at a center-of-mass energy per nucleon–nucleon collision of √sNN = 5.02 TeV at midrapidity (|y| < 0.9) is reported by the ALICE Collaboration. The measurements are ...
• #### Centrality dependence of $\mathbf{\psi}$(2S) suppression in p-Pb collisions at $\mathbf{\sqrt{{\textit s}_{\rm NN}}}$ = 5.02 TeV ﻿

(Peer reviewed; Journal article, 2016-06)
The inclusive production of the $\psi$(2S) charmonium state was studied as a function of centrality in p-Pb collisions at the nucleon-nucleon center of mass energy $\sqrt{s_{\rm NN}}$ = 5.02 TeV at the CERN LHC. The ...
• #### Centrality dependence of charged jet production in p-Pb collisions at $\sqrt{s_\mathrm{NN}}$ = 5.02 TeV ﻿

(Peer reviewed; Journal article, 2016-05)
Measurements of charged jet production as a function of centrality are presented for p-Pb collisions recorded at $\sqrt{s_{\rm NN}} = 5.02$ TeV with the ALICE detector. Centrality classes are determined via the energy ...
• #### Centrality Dependence of Charged Particle Production at Large Transverse Momentum in Pb--Pb Collisions at $\sqrt{s_{\rm{NN}}} = 2.76$ TeV ﻿

(Peer reviewed; Journal article, 2013-03)
The inclusive transverse momentum (pT) distributions of primary charged particles are measured in the pseudo-rapidity range |$\eta$| < 0.8 as a function of event centrality in Pb–Pb collisions at $\sqrt{s_{NN}}$ = 2.76 ...
• #### Centrality dependence of high-$p_{\rm T}$ D meson suppression in Pb-Pb collisions at $\sqrt{s_{\rm NN}}$ = 2.76 TeV ﻿

(Peer reviewed; Journal article, 2015-11)
The nuclear modification factor, $R_{\rm AA}$, of the prompt charmed mesons ${\rm D^0}$, ${\rm D^+}$ and ${\rm D^{*+}}$, and their antiparticles, was measured with the ALICE detector in Pb-Pb collisions at a ...
• #### Centrality dependence of inclusive J/$psi$ production in p-Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV ﻿

(Peer reviewed; Journal article, 2015-11)
We present a measurement of inclusive J/\).psi\) production in p-Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV as a function of the centrality of the collision, as estimated from the energy deposited in the Zero Degree ...
• #### Centrality dependence of particle production in p-Pb collisions at $\sqrt{s_{\rm NN} }$= 5.02 TeV ﻿

(Peer reviewed; Journal article, 2015-06)
We report measurements of the primary charged particle pseudorapidity density and transverse momentum distributions in p-Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV, and investigate their correlation with experimental ...
• #### Centrality dependence of the pseudorapidity density distribution for charged particles in Pb-Pb collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV ﻿

(Peer reviewed; Journal article, 2017-09)
We present the charged-particle pseudorapidity density in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02\,\mathrm{Te\kern-.25exV}$ in centrality classes measured by ALICE. The measurement covers a wide pseudorapidity ...
• #### Centrality dependence of the pseudorapidity density distribution for charged particles in Pb-Pb collisions at $\sqrt{s_{NN}}$ = 2.76 TeV ﻿

(Peer reviewed; Journal article, 2013-11)
We present the first wide-range measurement of the charged-particle pseudorapidity density distribution, for different centralities (the 0-5%, 5-10%, 10-20%, and 20-30% most central events) in Pb-Pb collisions at ...
• #### Centrality, rapidity and transverse momentum dependence of the J/$psi$ suppression in Pb-Pb collisions at $\sqrt{s_{NN}}$=2.76 TeV ﻿

(Peer reviewed; Journal article, 2014-06)
The inclusive J/\).psi\) nuclear modification factor $R_{AA}$ in Pb-Pb collisions at $\sqrt{s_{NN}}$.2.76TeV has been measured by ALICE as a function of centrality in the $e^+e^-$ decay channel at mid-rapidity |y| ...
• #### CFD-Model for the Photothermal Conversion Process in Ionic Nanofluids ﻿

(Master thesis, 2018-06-20)
Harnessing energy from a sustainable source like the Sun may be one of the key solutions for the increasing demand of energy. However, conventional solar harvesters are relatively low efficient so that use of solar energy ...
• #### Challenges and Strategic Research Plans for Earth and Heliosphere: Research Infrastructures, Projects and Initiatives ﻿

(Peer reviewed; Journal article, 2018-07-24)
We describe existing research infrastructures relevant for space weather and open issues of space weather research including the need for sustainable observation networks and for high-quality data products as basis for ...
• #### Challenges related to storage and transfer of solar energy with a case study on long distance power transfer ﻿

(Master thesis, 2010-06-21)
The challenges that will be discussed in this thesis are two-fold; the problems related to trans- mission of power over long distances, and the need for energy storage, especially at night. Both of the issues are accentuated ...
• #### Challenging aspects of critical thinking : A mixed-methods study of students’ test results, students’ reasoning, and teaching strategies ﻿

(Doctoral thesis, 2022-04-21)
There is a growing focus on critical thinking throughout the education system. Overall, the efforts that have been made to improve students’ critical thinking have not yielded the desired results. This could indicate a ...