Browsing Faculty of Mathematics and Natural Sciences by Title
Now showing items 7710-7729 of 10317
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Reciprocity calibration method for ultrasonic piezoelectric transducers in air
(Master thesis, 2013-06-17)The conventional three-transducer reciprocity calibration method for use in gas at ambient pressure and temperature is studied. Modifications are introduced, introducing correction factors for absorption in air, diffraction ... -
Reciprocity calibration of ultrasonic piezoelectric disks in air
(Master thesis, 2015-11-20)The phase response of a transducer acting as a transmitter or receiver of sound is important in many industrial applications, such as fiscal measurements of natural gas, therein multipath ultrasonic transit-time flow meters, ... -
ReCodLiver0.9: Overcoming Challenges in Genome-Scale Metabolic Reconstruction of a Non-model Species
(Journal article; Peer reviewed, 2020-11)The availability of genome sequences, annotations, and knowledge of the biochemistry underlying metabolic transformations has led to the generation of metabolic network reconstructions for a wide range of organisms in ... -
Recognizing Proper Tree-Graphs
(Journal article; Peer reviewed, 2020)We investigate the parameterized complexity of the recognition problem for the proper H-graphs. The H-graphs are the intersection graphs of connected subgraphs of a subdivision of a multigraph H, and the properness means ... -
Recommendation on use of wind lidars
(Research report, 2021) -
Recommendations for Identifying Valid Wear for Consumer-Level Wrist-Worn Activity Trackers and Acceptability of Extended Device Deployment in Children
(Journal article; Peer reviewed, 2022)Background: Self-reported physical activity is often inaccurate. Wearable devices utilizing multiple sensors are now widespread. The aim of this study was to determine acceptability of Fitbit Charge HR for children and ... -
Reconciling conflicting evidence for the cause of the observed early 21st century Eurasian cooling
(Journal article; Peer reviewed, 2023)It is now well established that the Arctic is warming at a faster rate than the global average. This warming, which has been accompanied by a dramatic decline in sea ice, has been linked to cooling over the Eurasian ... -
Reconciling Observation and Model Trends in North Atlantic Surface CO2
(Peer reviewed; Journal article, 2019)The North Atlantic Ocean is a region of intense uptake of atmospheric CO2. To assess how this CO2 sink has evolved over recent decades, various approaches have been used to estimate basin‐wide uptake from the irregularly ... -
Reconnaissance report and preliminary ground motion simulation of the 12 May 2008 Wenchuan earthquake
(Peer reviewed; Journal article, 2010)The Mw = 8.0Wenchuan earthquake of May 12, 2008, caused destruction over a wide area. The earthquake cost more than 69,000 lives and the damage is reported to have left more than 5 million people homeless. It is estimated ... -
Reconstructed 3D models of digestive organs of developing Atlantic cod (Gadus morhua) larvae
(Peer reviewed; Journal article, 2010)Six 3D models of the digestive system during ontogeny were reconstructed from histological sections of Atlantic cod larvae. The 3D models clearly visualize the following features: folding of the gut rotation; subdivision ... -
Reconstructed 3D-models of the digestive organs of ballan wrasse (Labrus bergylta) during ontogeny
(Master thesis, 2017-10)This study describe the ontogeny of the digestive tract and it’s associated glands of ballan wrasse at six reference stages from yolk sac larva (Stage 1; 4 DPH) until juvenile phase (Stage 6; 102 DPH). Reconstructed 3D-models ... -
Reconstructing early Holocene seasonal bottom-water temperatures in the northern North Sea using stable oxygen isotope records of Arctica islandica shells
(Journal article; Peer reviewed, 2021)The knowledge of seasonal temperature variability in the ocean is essential for understanding climate and its response to forcing factors. Time intervals with highly dynamic climate and increased seasonal forcing such as ... -
Reconstructing environmental variability at Leynavatn, Faroe Islands
(Master thesis, 2019-06-26)A new continuous environmental reconstruction has been established based on a 390 cm long lake core from Leynavatn Streymoy (southeast Faroes Islands), containing sediments spanning from the last 550 CE (Common Era). To ... -
Reconstructing Open Surfaces via Graph-Cuts
(Journal article, 2011)A novel graph-cuts-basedmethod is proposed for reconstructing open surfaces from unordered point sets. Through a boolean operation on the crust around the data set, the open surface problem is translated to a watertight ... -
Reconstructing Paleoflood Occurrence and Magnitude from Lake Sediments
(Journal article; Peer reviewed, 2022)Lake sediments are a valuable archive to document past flood occurrence and magnitude, and their evolution over centuries to millennia. This information has the potential to greatly improve current flood design and risk ... -
Reconstructing ribosomal genes from large scale total RNA meta-transcriptomic data
(Journal article; Peer reviewed, 2020-03-13)Motivation Technological advances in meta-transcriptomics have enabled a deeper understanding of the structure and function of microbial communities. ‘Total RNA’ meta-transcriptomics, sequencing of total reverse transcribed ... -
Reconstructing surface mass balance from the englacial stratigraphy of the Greenland Ice Sheet
(Doctoral thesis, 2022-09-30)Interiøren av isflakene består av mange lag akkumulert snø, hvis tykkelse avhenger av overflatemassebalanse (OMB) fra fortiden og effekten av dynamisk tynning etter lagenes avsetning. Denne oppgaven undersøker påvirkningen ... -
Reconstructing the time history of the air-sea CO2 disequilibrium and its rate of change in the eastern subpolar North Atlantic, 1972–1989
(Peer reviewed; Journal article, 2006)This study determines the temporal changes of wintertime surface ocean partial pressure of CO2 (pCO2 SW) in the eastern subpolar North Atlantic (esNA) (50–64ºN; 32–10ºW) by using data of carbon-system parameters and ... -
Reconstructing uplift signals from sediment supply and tectonostratigraphy in a clastic shelf, Early Paleogene Shetland Platform
(Doctoral thesis, 2024-06-25)Sedimentære bassenger er viktige arkiver for planetens geodynamikk og klima. Kompleksiteten til dette registeret innebærer dog at det er en ikke-triviell oppgave å ekstrahere tektoniske og klimatiske svingninger, noe som ... -
Reconstructing winter climate anomalies in the Euro-Atlantic sector using circulation patterns
(Journal article; Peer reviewed, 2021)The efficacy of Euro-Atlantic circulation regimes for estimating wintertime climate anomalies (precipitation and surface temperature) over Europe is assessed. A comparison of seasonal climate reconstructions from two ...