A5090983636- Archaeology and ancient environmental studies
- Isotope Analysis in Ecology
- Geology and Paleoclimatology Research
- Nuclear Physics and Applications
- Tree-ring climate responses
- Pleistocene-Era Hominins and Archaeology
- Radioactivity and Radon Measurements
- Radiation Effects and Dosimetry
- Mass Spectrometry Techniques and Applications
- Geological formations and processes
- Building materials and conservation
- Pacific and Southeast Asian Studies
- Multiple Sclerosis Research Studies
- Heart Failure Treatment and Management
- Cardiovascular and exercise physiology
- Nuclear reactor physics and engineering
- Plant Water Relations and Carbon Dynamics
- Cryospheric studies and observations
- Cultural Heritage Materials Analysis
- Chemical Synthesis and Characterization
- Geochemistry and Geologic Mapping
- Ion-surface interactions and analysis
- Iron and Steelmaking Processes
- Metallurgical Processes and Thermodynamics
- Soil erosion and sediment transport
Norwegian University of Science and Technology
2016-2023
Vitensenteret i Trondheim
2021-2023
University of Arizona
2021
Institut de l'Information Scientifique et Technique
2021
University of Debrecen
2021
University of Tsukuba
2016
German Centre for Cardiovascular Research
2016
ETH Zurich
2010-2015
A more developed and modern technology replaced the old radiocarbon measuring methods in Hungary, based on isotope separation by accelerator mass spectrometry (AMS) not activity measurements. In summer 2011, EnvironMICADAS was successfully installed Laboratory of HEKAL, Debrecen, Hungary. this project, a multipurpose gas-handling system for gas ion source at ETH Zürich, designed measurement small environmental origin samples (<50 μg carbon) with moderate precision requirements. The...
Background— A greater understanding of the different underlying mechanisms between patients with heart failure reduced (HFrEF) and preserved (HFpEF) ejection fraction is urgently needed to better direct future treatment. However, although skeletal muscle impairments, potentially mediated by inflammatory cytokines, are common in both HFrEF HFpEF, cellular molecular alterations that exist groups yet be systematically evaluated. The present study, therefore, used established animal models...
ABSTRACT The radiocarbon ( 14 C) calibration curve so far contains annually resolved data only for a short period of time. With accelerator mass spectrometry (AMS) matching the precision decay counting, it is now possible to efficiently produce large datasets annual resolution purposes using small amounts wood. intercomparison on single-year tree-ring samples presented here first investigate specifically offsets between AMS laboratories at high precision. results show that are capable...
ABSTRACT The Trondheim radiocarbon ( 14 C) laboratory has evolved from a traditional decay counting to an accelerator mass spectrometry (AMS) facility primarily measuring C. This evolution required adjustments in sample preparation and data handling match the capacity of AMS system reduction sizes about 1 mgC. We summarize here steps involved dating at National Laboratory for Age Determination Trondheim, Norway. These include structure our database information handling, cleaning procedures...
ABSTRACT A coupled accelerator mass spectrometer–gas interface system has been successfully operating at the Hertelendi Laboratory of Environmental Studies, Debrecen, Hungary, since 2013. Over last 6 years more than 500 gas targets were measured below 100 µg carbon content for isotopic composition. The was tested with blanks, OxII, IAEA-C1, IAEA-C2, and IAEA-C7 standards. performance our instrumentation shows good agreement other published gas-interface data also a quite nominal value...
ABSTRACT Wasted tires are the great source of fuel and valuable components but could be a cause environmental land pollution. This study shows detailed method for determination radiocarbon isotope ( 14 C) concentration in their pyrolysis products. Samples taken from truck passenger car form shredded rubber, oil recovered carbon black. Liquid scintillation counting (LSC) accelerator mass spectrometry (AMS) techniques were used investigation at Gliwice Radiocarbon Mass Spectrometry Laboratory,...
Abstract Background Primary progressive multiple sclerosis (PPMS) is characterised by gradual worsening of disability from symptom onset. Knowledge about the natural course PPMS remains limited. Methods patients German NeuroTransData (NTD) MS registry with data 56 outpatient practices were employed for retrospective cross-sectional and longitudinal analyses. The analysis included a contemporary cohort documented visit within last 2 years before index date (1 Jan 2021). disease modifying...
ABSTRACT Sub-annual measurements, eight increments per year, of cellulose in a Scots pine tree growing central Norway are presented as proxy for tropospheric 14 CO 2 at biweekly to monthly resolution. The results validated by comparison direct atmospheric measurements the years 1959–1965, and new dataset is obtained 1953–1958. In this period, our deviate from Bomb 13 NH1 calibration curve, which derived single-year rings. This due seasonal cycles radiocarbon ( C) concentrations, caused first...
With the onset of anthropogenic climate change, ClimateCultures project aims to tackle question &#8220;What happened last time we encountered rapid change?&#8221; using evidence from tree rings and historical records paint a picture natural impacts societal responses in Norway during Little Ice Age. More specifically, aim investigate short-lived extreme cold events 1700&#8217;s. This calls for more regional scale account complex drivers over mountainous country with climatic...
ABSTRACT Atmospheric CO 2 samples have been collected by the Trondheim Radiocarbon Laboratory since 1960s. The remaining material from measurements has precipitated as CaCO 3 and stored in glass containers. We investigated some of to assess whether could still be used for remeasurements atmospheric radiocarbon ( 14 C) content, or if it contaminated during years storage. attempted different methods clean carbonate release new measurements. results indicate that older before 1970 show a...
ABSTRACT To resolve an inconsistency around AD 1895 between radiocarbon ( 14 C) measurements on oak from the British Isles and Douglas fir Sitka spruce Pacific Northwest, USA, we measured C content in single-year tree rings a Scots pine Pinus sylvestris L.), which grew remote location Saltdal, northern Norway. The dataset covers period 1864–1937 its results are agreement with US coast 1895. most likely explanation for older ages this seems to be depletion associated combustion of fossil fuels.
During the Last Glacial Maximum, coast of Finnmark county, northern Norway, was covered by Scandinavian Ice Sheet (SIS), which coalesced with Barents Sea (BSIS) off coast. The region is thus important for our understanding dynamic interactions between BSIS and SIS, yet it remains one least dated regions SIS. To improve chronological constraints, we present 23 new 10 Be ages from eight localities in northernmost Norway Finland, discuss implications pattern timing ice‐sheet retreat region....
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ABSTRACT We present the results of a multifaceted study an antiphonary—liturgical song book—presumably made in Venice 1607, now Ringve, National Music Museum Norway Trondheim 1 . The book is hand-sewn on raised cords, bound full leather cardboard covers, originally with metal clamps. paper block consists pages printed black and red that include both texts music scores. ink based vermillion lead while carbon based. treads cords were flax. used was from goat skin. Radiocarbon confirmed...
ABSTRACT Eight atmospheric carbon dioxide samples (as calcium carbonate—CaCO 3 —precipitates) from Lindesnes site (58ºN, 7ºE), belonging to 1963 and 1980 (four each year) stored at the National Laboratory for Age Determination (NTNU), have been reevaluated through radiocarbon ( 14 C) analysis. Previous C results indicated presence of a contaminant, which was not removed different chemical cleansing procedures (e.g., hydrochloric acid—HCl and/or hydrogen peroxide—H 2 O ). Here, we present...