Browsing Bergen Open Research Archive by Title
Now showing items 18564-18583 of 34308
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Low Salinity Waterflood in Combination with Surfactant/Polymer; Effect of Surfactant Slug Size
(Master thesis, 2014-06-02)In last years, there has been a growing interest in the effect of reducing salinity of injected water in oil recovery. Many studies have showed that low salinity waterflooding is a promising method that can lead to a ... -
Low Salinity Waterflood in Combination with Surfactant/Polymer; Effects of Kinetics and Brine Composition
(Master thesis, 2014-06-01)Improving the oil recovery beyond what is possible by conventional methods is a topic of great interest, and the potential oil recovery for a field can be improved if unconventional methods are implemented. Reducing the ... -
Low Salinity Waterflooding in Combination with Surfactant/Polymer. A Field Scale Simulation Study of Hybrid EOR
(Master thesis, 2018-06-27)It is projected that 77% of energy consumption will originate from fossil fuels in 2040, indicating a continuous demand for crude oil [1]. Nevertheless, more than half of the hydrocarbons produced at present originate from ... -
Low serum DHEA-S is associated with impaired lung function in women
(Journal article; Peer reviewed, 2020)Background Emerging evidence suggests that androgens and estrogens have a role in respiratory health, but it is largely unknown whether levels of these hormones can affect lung function in adults from the general population. ... -
Low Serum Levels of 25-Hydroxyvitamin D Predict Hip Fracture in the Elderly: A NOREPOS Study
(Peer reviewed; Journal article, 2013-08)Background: Despite considerable interest, the relationship between circulating 25-hydroxyvitamin D and the risk of hip fracture is not fully established. Objective: The objective of the study was to study the association ... -
Low temperature and low UV indexes correlated with peaks of influenza virus activity in Northern Europe during 2010-2018
(Peer reviewed; Journal article, 2019-03-01)With the increasing pace of global warming, it is important to understand the role of meteorological factors in influenza virus (IV) epidemics. In this study, we investigated the impact of temperature, UV index, humidity, ... -
Low use of long-lasting insecticidal nets for malaria prevention in south-central Ethiopia: A community-based cohort study
(Peer reviewed; Journal article, 2019-01-10)Introduction: A decline in malaria morbidity and mortality has been documented in Ethiopia since 2005 following a scale-up of the distribution of long-lasting insecticidal nets (LLINs). However, universal access to LLINs ... -
Low vitamin D, but not tobacco use or high BMI, is associated with long-term disability progression in multiple sclerosis
(Journal article; Peer reviewed, 2021)Background: Low vitamin D levels, tobacco use and high body mass index (BMI) have been linked to adverse disease outcomes in multiple sclerosis (MS), but their influence on long-term disability progression remains unclear. ... -
Low Z-4OHtam concentrations are associated with adverse clinical outcome among early stage premenopausal breast cancer patients treated with adjuvant tamoxifen
(Journal article; Peer reviewed, 2021)Low steady‐state levels of active tamoxifen metabolites have been associated with inferior treatment outcomes. In this retrospective analysis of 406 estrogen receptor‐positive breast cancer (BC) patients receiving adjuvant ... -
Low β2-adrenergic receptor level may promote development of castration resistant prostate cancer and altered steroid metabolism
(Peer reviewed; Journal article, 2016-12-04)The underlying mechanisms responsible for the development of castration-resistant prostate cancer (CRPC) in patients who have undergone androgen deprivation therapy are not fully understood. This is the first study to ... -
A low-cost autonomous rover for polar science
(Peer reviewed; Journal article, 2019-06-11)We present the developmental considerations, design, and deployment of an autonomous modular terrestrial rover for ice-sheet exploration that is inexpensive, easy to construct, and allows for instrumentation customization. ... -
Low-energy electron ionization mass spectrometer for efficient detection of low mass species
(Journal article; Peer reviewed, 2021)The design of a high-efficiency mass spectrometer is described, aimed at residual gas detection of low mass species using low-energy electron impact, with particular applications in helium atom microscopy and atomic or ... -
Low-energy fracture of the distal radius in middleaged and elderly Norwegian women and men. Topics related to osteoporosis, fracture risk and vitamin D
(Doctoral thesis, 2011-02-25)Introduction: Low-energy distal radius fractures normally occur earlier in life than hip and spine fractures and may be the first presentation of osteoporosis. Few studies have addressed the association between distal ... -
Low-energy probes of no-scale SU(5) super-GUTs
(Journal article; Peer reviewed, 2021)We explore the possible values of the \(\mu \rightarrow e \gamma \) branching ratio, \(\text {BR}(\mu \rightarrow e\gamma )\), and the electron dipole moment (eEDM), \(d_e\), in no-scale SU(5) super-GUT models with the ... -
Low-energy surface vibration measurements on the alpha-quartz (0001) surface
(Master thesis, 2011)Despite the enormous range of usages, only little is known about the dynamic and structural properties of quartz (SiO2) surfaces on the atomic scale. The main reason for this is probably that quartz is an insulator, with ... -
Low-Intensity Sonoporation-Induced Intracellular Signalling of Pancreatic Cancer Cells, Fibroblasts and Endothelial Cells
(Journal article; Peer reviewed, 2020)The use of ultrasound (US) and microbubbles (MB), usually referred to as sonoporation, has great potential to increase the efficacy of chemotherapy. However, the molecular mechanisms that mediate sonoporation response are ... -
Low-level jet height’s impact on wind turbine loads: A case study
(Master thesis, 2023-06-01)Over the years, wind turbines have been steadily increasing in size, with newer models boasting larger dimensions. For instance, the diameter of an installed prototype offshore wind turbine in late 2022 was over 200 m, ... -
Low-Level Laser Therapy and Cryotherapy in Tendinopathy Treatment. Clinical, biological, and biophysical effects of low-level laser therapy alone and in combination with cryotherapy
(Doctoral thesis, 2018-06-12)Introduction: Low-level laser therapy (LLLT) and cryotherapy are applied to the human skin to trigger biological actions in the underlying tissue. LLLT modulates biological processes by emitting energy-charged photons to ... -
Low-Rank Binary Matrix Approximation in Column-Sum Norm
(Journal article; Peer reviewed, 2020)We consider 𝓁₁-Rank-r Approximation over {GF}(2), where for a binary m× n matrix 𝐀 and a positive integer constant r, one seeks a binary matrix 𝐁 of rank at most r, minimizing the column-sum norm ‖ 𝐀 -𝐁‖₁. We show ...