Now showing items 1817-1836 of 1848

• #### Viscous potential flow analysis of peripheral heavy ion collisions ﻿

(Peer reviewed; Journal article, 2013-02-19)
The conditions for the development of a Kelvin-Helmholtz instability (KHI) for the quark-gluon plasma (QGP) flow in a peripheral heavy ion collision is investigated. The projectile and target side particles are separated ...
• #### Visualization and interpretation of methane hydrate growth and dissociation in synthetic porous media ﻿

(Master thesis, 2015-12-22)
Sedimentary natural gas hydrates might play an important role in the future energy mix and the impact of methane release from natural gas hydrates can be significant also with respect to climate change. Vast amounts of ...
• #### Vorticity in peripheral collisions at the Facility for Antiproton and Ion Research and at the JINR Nuclotron-based Ion Collider fAcility ﻿

(Peer reviewed; Journal article, 2014-08-29)
The flow vorticity development is studied in the reaction plane of peripheral relativistic heavy-ion reactions at energies just above the threshold of the transition to a quark-gluon plasma (QGP). Earlier calculations at ...
• #### W and Z boson production in p–Pb collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV ﻿

(Peer reviewed; Journal article, 2017-02)
The W and Z boson production was measured via the muonic decay channel in proton-lead collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV at the Large Hadron Collider with the ALICE detector. The measurement covers backward ...
• #### A water droplet-powered sensor based on charge transfer to a flow-through front surface electrode ﻿

(Journal article; Peer reviewed, 2020)
A water droplet sensor based on a flow-through front surface electrode is demonstrated. It is shown that a triboelectric nanogenerator based on a metal-dielectric junction can be utilized to construct simple, self-powered ...
• #### Water shutoff and conformance improvement: an introduction ﻿

(Journal article; Peer reviewed, 2021)
This paper provides an introduction to the topic of water shutoff and conformance improvement. After indicating the volumes of water produced during oilfield operations, a strategy is provided for attacking excess water ...
• #### Waterflood Efficiency and Single-Phase Flow Properties of Carbonate Porous Media ﻿

(Doctoral thesis, 2009-12-17)
• #### Wettability effects on oil recovery mechanisms in fractured chalk ﻿

(Doctoral thesis, 2007-02-02)
This thesis is a part of the ongoing project, “Oil recovery from fractured chalk reservoirs”, which is a collaboration between the Reservoir Physics Group at the University of Bergen and ConocoPhillips Research Center in ...
• #### What Determines the Parameters of a Propagating Streamer: A Comparison of Outputs of the Streamer Parameter Model and of Hydrodynamic Simulations ﻿

(Journal article; Peer reviewed, 2021)
Electric streamer discharges (streamers) in the air are a very important stage of lightning, taking place before formation of the leader discharge, and with which an electric discharge starts from conducting objects which ...
• #### What is the appropriate coordinate system for magnetometer data when analyzing ionospheric currents? ﻿

(Peer reviewed; Journal article, 2014-10)
In this paper we investigate which coordinate representation is most appropriate when analyzing ground magnetometer data in terms of ionospheric currents, in particular the westward electrojet. The AL and the recently ...
• #### Why should we use residual thermodynamics for calculation of hydrate phase transitions? ﻿

(Journal article; Peer reviewed, 2020)
The formation of natural gas hydrates during processing and transport of natural has historically been one of the motivations for research on hydrates. In recent years, there has been much focus on the use of hydrate as a ...
• #### Will Climate Change Impact Polar NOx Produced by Energetic Particle Precipitation? ﻿

(Journal article; Peer reviewed, 2020)
Energetic electron precipitation (EEP) is an important source of polar nitrogen oxides (NOx) in the upper atmosphere. During winter, mesospheric NOx has a long chemical lifetime and is transported to the stratosphere by ...
• #### Wilson line correlators beyond the large-Nc ﻿

(Journal article; Peer reviewed, 2021)
We study hard 1 → 2 final-state parton splittings in the medium, and put special emphasis on calculating the Wilson line correlators that appear in these calculations. As partons go through the medium their color continuously ...
• #### Z boson production in Pb+Pb collisions at √sNN=5.02 TeV measured by the ATLAS experiment ﻿

(Journal article; Peer reviewed, 2020)
The production yield of Z bosons is measured in the electron and muon decay channels in Pb+Pb collisions at √sNN = 5.02 TeV with the ATLAS detector. Data from the 2015 LHC run corresponding to an integrated luminosity of ...
• #### Z-boson production in p-Pb collisions at √sNN = 8.16 TeV and Pb-Pb collisions at √sNN = 5.02 TeV ﻿

(Journal article; Peer reviewed, 2020)
Measurement of Z-boson production in p-Pb collisions at √ sNN = 8.16 TeV and Pb-Pb collisions at √ sNN = 5.02 TeV is reported. It is performed in the dimuon decay channel, through the detection of muons with pseudorapidity ...
• #### ZZ→ℓ+ℓ−ℓ'+ℓ'− cross-section measurements and search for anomalous triple gauge couplings in 13 TeV pp collisions with the ATLAS detector ﻿

(Peer reviewed; Journal article, 2018)
Measurements of ZZ production in the lþl−l0þl0− channel in proton–proton collisions at 13 TeV center-of-mass energy at the Large Hadron Collider are presented. The data correspond to 36.1 fb−1 of collisions collected by ...
• #### Økt oljeutvinning i kalk basert på vannkjemi og potensialbestemmende ioner for endring av fukt ﻿

(Master thesis, 2010-06-01)
Om lag 50 % av verdens oljereserver ligger lagret i karbonatreservoarer. Slike reservoarer har ofte en fukt som ligger i området fra nøytralt fuktet til moderat oljefuktet. Nøkkelmekanismen for høy oljeutvinning ved ...
• #### Λ and Λ spin interaction with meson fields generated by the baryon current in high energy nuclear collisions ﻿

(Peer reviewed; Journal article, 2019-02-19)
We propose a dynamical mechanism which provides an interaction between the spins of hyperons and antihyperons and the vorticity of the baryon current in noncentral high energy nuclear collisions. The interaction is mediated ...
• #### Λ c + production in pp collisions at √s=7 TeV and in p-Pb collisions at √sNN=5.02 TeV ﻿

(Peer reviewed; Journal article, 2018-04)
The pT-differential production cross section of prompt Λ c + charmed baryons was measured with the ALICE detector at the Large Hadron Collider (LHC) in pp collisions at s√=7 TeV and in p-Pb collisions at sNN−−−√=5.02 TeV ...
• #### Λ polarization in an exact rotating and expanding fluid dynamical model for peripheral heavy ion reactions ﻿

(Peer reviewed; Journal article, 2015-12-02)
We calculate the Λ polarization in an exact analytical, rotating model based on parameters extracted from a high resolution (3+1)D particle-in-cell relativistic hydrodynamics calculation. The polarization is attributed to ...