Blar i Bergen Open Research Archive på tittel
Viser treff 18620-18639 av 34096
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Magnetic Effects of Plasma Pressure Gradients in the Upper F Region
(Peer reviewed; Journal article, 2019)The Swarm satellites fly at altitudes that at polar latitudes are generally assumed to only contain currents that are aligned with the local magnetic field. Therefore, disturbances along the main field direction are mainly ... -
Magnetic Reconnection and Heavy Ions
(Doctoral thesis, 2022-09-28)Majoriteten av materien i det observerbare universet eksisterer i form av en plasma. Plasmaet er karakteriseres av en samling ladede partikler som oppfyller visse elektrodynamiske egenskaper hvor den typiske potensielle ... -
Magnetic Reconnection in a Quasi-Parallel Shock: Two-Dimensional Local Particle-in-Cell Simulation
(Peer reviewed; Journal article, 2019)Magnetic reconnection in a quasi‐parallel bow shock is investigated with two‐dimensional local particle‐in‐cell simulations. In the shock transition and downstream regions, large amplitude magnetic fluctuations exist, and ... -
Magnetic Reconnection in Three Dimensions: Modeling and Analysis of Electromagnetic Drift Waves in the Adjacent Current Sheet
(Journal article; Peer reviewed, 2019)We present a model of electromagnetic drift waves in the current sheet adjacent to magnetic reconnection at the subsolar magnetopause. These drift waves are potentially important in governing 3‐D structure of subsolar ... -
Magnetic Resonance Imaging and Computed Tomography for the Noninvasive Assessment of Arterial Aging: A Review by the VascAgeNet COST Action
(Journal article; Peer reviewed, 2023)Magnetic resonance imaging and computed tomography allow the characterization of arterial state and function with high confidence and thus play a key role in the understanding of arterial aging and its translation into the ... -
Magnetic resonance imaging of craniovertebral structures: clinical significance in cervicogenic headaches
(Peer reviewed; Journal article, 2011-09-27)This paper aims to investigate the relevance of morphological changes in the main stabilizing structures of the craniocervical junction in persons with cervicogenic headache (CEH). A case control study of 46 consecutive ... -
Magnetic Resonance Imaging of Hydrate Phase Transitions in Sediments
(Master thesis, 2017-12-21)Natural gas hydrates, simplified described as gas compressed in ice, are a substance existing in large quantities around the world. Their existence requires elevated pressures and low temperature. They are therefore found ... -
Magnetic Resonance Imaging of Methane Hydrate Formation and Dissociation in Sandstone with Dual Water Saturation
(Peer reviewed; Journal article, 2019-08-22)This paper reports formation and dissociation patterns of methane hydrate in sandstone. Magnetic resonance imaging spatially resolved hydrate growth patterns and liberation of water during dissociation. A stacked core ... -
Magnetic resonance imaging of the knee in Norway 2002–2004 (national survey): rapid increase, older patients, large geographic differences
(Peer reviewed; Journal article, 2007-07-22)Background: Magnetic resonance imaging (MRI) of the knee is the second most common MRI examination in Norway after head/brain MRI. Little has been published internationally on trends in the use of knee MRI after 1999. This ... -
Magnetic Resonance Spectroscopy in Depressed Subjects Treated With Electroconvulsive Therapy—A Systematic Review of Literature
(Journal article; Peer reviewed, 2021)Electroconvulsive therapy (ECT) is considered to be the most effective acute treatment for otherwise treatment resistant major depressive episodes, and has been used for over 80 years. Still, the underlying mechanism of ... -
Magnetisk resonanstomografi i multisenterstudier. Objektiv og subjektiv evaluering av bildekvalitet
(Master thesis, 2011-12-05)Background: Magnetic resonance imaging (MRI) is a technically vulnerable acquisition method. Sequence optimization across equipment increase image quality and reproducibility of multicenter data. Comparisons of scanner-related ... -
Magnetization transfer ratio does not correlate to myelin content in the brain in the MOG-EAE mouse model
(Peer reviewed; Journal article, 2015-03-02)Magnetization transfer ratio (MTR) is a magnetic resonance imaging (MRI) method which may detect demyelination not detected by conventional MRI in the central nervous system of patients with multiple sclerosis (MS). A ... -
Magnetometric survey in the temple of Athena Alea at Tegea - a report
(Papers and Monographs from the Norwegian Institute at Athens. series 4o, volume 3, Chapter, 2014) -
Magnetospheric Flux Throughput in the Dungey Cycle: Identification of Convection State During 2010
(Journal article; Peer reviewed, 2021)We quantify the contributions of different convection states to the magnetic flux throughput of the magnetosphere during 2010. To do this we provide a continuous classification of convection state for the duration of 2010 ... -
Magnetospheric Multiscale Observations of an Expanding Oxygen Wave in Magnetic Reconnection
(Journal article; Peer reviewed, 2021)Heavier plasma species such as oxygen ions can have a large impact on the magnetic reconnection process. It has been hypothesized that the acceleration of demagnetized oxygen ions by the Hall electric field will lead to ... -
Magnetospheric response and reconfiguration times following IMF By reversals
(Peer reviewed; Journal article, 2017-01)The interaction between the interplanetary magnetic field (IMF) and the geomagnetic field at the dayside magnetopause leads to transfer of momentum and energy which changes the magnetospheric configuration, but only after ... -
Magnitude and determinants of out of pocket health expenditure among patients visiting outpatients in public hospitals in East Shoa Zone, Ethiopia
(Journal article; Peer reviewed, 2022)Background Out-of-pocket payment (OOP) for healthcare services remained the main means of the financing health system in developing countries for a decade. Therefore, we assessed the magnitude and determinants of OOP ... -
Magnitude and Origin of the Anthropogenic CO2 Increase and the 13C Suess Effect in the Nordic Seas since 1981
(Peer reviewed; Journal article, 2006-09-29)This study evaluates the anthropogenic changes of CO2 (∆Cant) and δ13C (∆δ13Cant) in the Nordic seas, the northern limb of the Atlantic Meridional Overturning Circulation, that took place between 1981 and 2002/03. The ... -
The magnitude and perceived reasons for childhood cancer treatment abandonment in Ethiopia: from health care providers’ perspective
(Journal article; Peer reviewed, 2022)Background: Treatment abandonment is one of major reasons for childhood cancer treatment failure and low survival rate in low- and middle-income countries. Ethiopia plans to reduce abandonment rate by 60% (2019–2023), but ... -
Magnitude and risk factors of non-communicable diseases among people living with HIV in Tanzania: a cross sectional study from Mbeya and Dar es Salaam regions
(Peer reviewed; Journal article, 2014-09-02)Background: HIV and Non communicable diseases (NCDs) are major problem of public health importance in developing countries. This study was conducted to explore and establish information on the magnitude, distribution of ...