Blar i Faculty of Mathematics and Natural Sciences på tittel
Viser treff 1972-1991 av 9860
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Direct and indirect electron precipitation effect on nitric oxide in the polar middle atmosphere, using a full-range energy spectrum
(Peer reviewed; Journal article, 2017)In April 2010, a coronal mass ejection and a corotating interaction region on the Sun resulted in an energetic electron precipitation event in the Earth’s atmosphere. We investigate direct and indirect nitric oxide (NO) ... -
Direct constraint on the Higgs–charm coupling from a search for Higgs boson decays into charm quarks with the ATLAS detector
(Journal article; Peer reviewed, 2022)A search for the Higgs boson decaying into a pair of charm quarks is presented. The analysis uses proton–proton collisions to target the production of a Higgs boson in association with a leptonically decaying W or Z boson. ... -
A direct construction of even length ZCPs with large ZCZ ratio
(Journal article; Peer reviewed, 2022)This paper presents a direct construction of aperiodic q-ary (q is a positive even integer) even length Z-complementary pairs (ZCPs) with large zero-correlation zone (ZCZ) width using generalised Boolean functions (GBFs). ... -
Direct Construction of Optimal Z-Complementary Code Sets With Even Lengths by Using Generalized Boolean Functions
(Journal article; Peer reviewed, 2022)The Z-complementary code set (ZCCS) is well-known for being used in multicarrier code-division multiple access (MC-CDMA) systems to provide interference-free communication in a quasi-synchronous environment. Based on the ... -
Direct data transfer between SOAP web services in Orchestration
(Chapter; Peer reviewed, 2012)In scientific data analysis, workflows are used to integrate and coordinate resources such as databases and tools. Workflows are normally executed by an orchestrator that invokes component services and mediates data transport ... -
The Direct Effect of Medium Energy Electron Precipitation on Mesospheric Dynamics During a Sudden Stratospheric Warming Event in 2010
(Journal article; Peer reviewed, 2022)Medium energy electron (MEE) (30–1,000 keV) precipitation enhances the production of nitric (NOx) and hydrogen oxides (HOx) throughout the mesosphere, which can destroy ozone (O3) in catalytic reactions. The dynamical ... -
Direct image-to-geometry registration using mobile sensor data
(Peer reviewed; Journal article, 2016)Adding supplementary texture and 2D image-based annotations to 3D surface models is a useful next step for domain specialists to make use of photorealistic products of laser scanning and photogrammetry. This requires a ... -
Direct Injection Electrospray Mass Spectrometry (DI-ESI-MS) and Liquid Chromatography Electrospray Mass Spectrometry (LC-ESI-MS) method development for characterisation of organic acids in petroleum and bio-oil samples
(Master thesis, 2017-05-09)Analysis and characterisation of complex mixtures such as petroleum and bio-oils are unarguably challenging. Finding suitable analytical method therefore needs to be considered carefully by analytical chemists. Electrospray ... -
Direct measurements of the mean flow and eddy kinetic energy structure of the upper ocean circuletion in the NE Atlantic
(Journal article, 2005-07-19)The upper ocean circulation in the sub-polar northeast Atlantic has been a challenge to quantify due to strong and variable wind-forcing, and strong and variable deep currents that lead to large uncertainties in the use ... -
Direct observation of the dead-cone effect in quantum chromodynamics
(Journal article; Peer reviewed, 2022)In particle collider experiments, elementary particle interactions with large momentum transfer produce quarks and gluons (known as partons) whose evolution is governed by the strong force, as described by the theory of ... -
Direct observations of anomalous resistivity and diffusion in collisionless plasma
(Journal article; Peer reviewed, 2022)Coulomb collisions provide plasma resistivity and diffusion but in many low-density astrophysical plasmas such collisions between particles are extremely rare. Scattering of particles by electromagnetic waves can lower the ... -
Direct ocean surface velocity measurements from space: Improved quantitative interpretation of Envisat ASAR observations
(Peer reviewed; Journal article, 2008-11-29)Previous analysis of Advanced Synthetic Aperture Radar (ASAR) signals collected by ESA’s Envisat has demonstrated a very valuable source of high-resolution information, namely, the line-of-sight velocity of the moving ocean ... -
Direct photon elliptic flow in Pb–Pb collisions at √sNN=2.76 TeV
(Peer reviewed; Journal article, 2019-02-10)The elliptic flow of inclusive and direct photons was measured at mid-rapidity in two centrality classes 0–20% and 20–40% in Pb–Pb collisions at TeV by ALICE. Photons were detected with the highly segmented electromagnetic ... -
Direct photon elliptic flow in Pb–Pb collisions at √sNN=2.76 TeV
(Peer reviewed; Journal article, 2019)The elliptic flow of inclusive and direct photons was measured by ALICE for central and semi-central Pb–Pb collisionsat√sNN=2.76 TeV. The photons were reconstructed using the electromagnetic calorimeter PHOS and the ... -
Direct photon measurements in pp and Pb-Pb collisions with the ALICE experiment
(Peer reviewed; Journal article, 2017-11)Direct photon production in heavy-ion collisions provides a valuable set of observables to study the hot QCD medium. The direct photons are produced at different stages of the collision and escape the medium unaffected. ... -
Direct photon production at low transverse momentum in proton-proton collisions at √s=2.76 and 8 TeV
(Peer reviewed; Journal article, 2019)Measurements of inclusive and direct photon production at midrapidity in pp collisions at √s = 2.76 and 8 TeV are presented by the ALICE experiment at the LHC. The results are reported in transverse momentum ranges of 0.4 ... -
Direct photon production in Pb-Pb collisions at \(\sqrt{s_{NN}}\)=2.76 TeV
(Peer reviewed; Journal article, 2016-03)Direct photon production at mid-rapidity in Pb-Pb collisions at \(\sqrt{s_{\rm NN}} = 2.76\) TeV was studied in the transverse momentum range \(0.9 < p_{\rm T} < 14\) GeV/\(c\), Photons were detected via conversions in the ... -
Direct top-quark decay width measurement in the tt¯lepton+jets channel at √s=8 TeV with the ATLAS experiment
(Peer reviewed; Journal article, 2018-02-15)This paper presents a direct measurement of the decay width of the top quark using tt¯ events in the lepton+jets final state. The data sample was collected by the ATLAS detector at the LHC in proton–proton collisions at a ... -
Direct two-photon double ionization of H2
(Peer reviewed; Journal article, 2012-06-05)We have studied the process of direct (nonsequential) two-photon double ionization of molecular hydrogen (H2). Solving the time-dependent Schr¨odinger equation by an ab initio method, total (generalized) and singledifferential ... -
Direct Visualization of CH4/CO2 Hydrate Phase Transitions in Sandstone Pores
(Journal article; Peer reviewed, 2021)This paper reports the formation and dissociation pattern of hydrate crystals with varying compositions of CH4 and CO2 in porous media. Direct visualization was carried out using a high-pressure, water-wet, silicon wafer-based ...