36 research outputs found

    Use of diffusive gradient in thin-films (DGTs) to advance environmental mercury research: : Development, Growth, and Tomorrow.

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    Open Access via the Elsevier agreement CG is funded by Chevron through its Anchor Partnership with the UK National Decommissioning Centre (Grant no. RG15508-11). We also acknowledge funding and in-kind support from the Net Zero Technology Centre and the University of Aberdeen through their partnership with the UK National Decommissioning Centre.Peer reviewe

    Considerations for future quantitative structure-activity relationship (QSAR) modelling for heavy metals : A case study of mercury

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    Acknowledgements The authors would like to acknowledge the in-kind contribution of the National Decommissioning Centre of the use of the mercury analyser, and the support of the Net Zero Technology Centre. Funding This work was supported by the University of Aberdeen [grant no. RG13793-67], the UK Energy Research Centre [grant no. UKERC-4 EP/S029575/1], DEFRA [grant no. ETPP-33/C10], and the National Decommissioning Centre through the University of Aberdeen [grant no. RG15508-11].Peer reviewedPublisher PD

    Mercury fingerprint : A comparative evaluation of lability in North Sea drill cuttings

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    We would like to thank the Scottish Marine Directorate and Daniel Stewart for the opportunity to join cruise 1422S. Sampling and general support was provided by chief scientist Robert Watret, and scientists Danny Copland, Paul Stainer, and Jack Lucas, as well as the captain and the entire crew of the MRV Scotia.Peer reviewe

    The sensitivity of the zebrafish embryo coiling assay for the detection of neurotoxicity by compounds with diverse modes of action

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    Open Access via the Springer Agreement Funding: This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 681002 (EU-ToxRisk).Peer reviewedPublisher PD

    An approach to assess potential environmental mercury release, food web bioaccumulation, and human dietary methylmercury uptake from decommissioning offshore oil and gas infrastructure

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    Open Access via the Elsevier Agreement Funding This research was funded by the National Decommissioning Centre through University of Aberdeen. Astley Hastings and Rebecca von Hellfeld are further funded by the UK Research and Innovation Energy Programme under grant number EP/S029575/1. Christoph Gade is funded by UK National Decommissioning Centre. We also acknowledge the in-kind support from the Net Zero Technology Centre. CRediT authorship contribution statement Rebecca von Hellfeld: Conceptualization; Data curation; Formal analysis; Investigation; Methodology; Software; Validation; Visualization; Roles/Writing - original draft; Writing - review & editing. Christoph Gade: Methodology; Roles/Writing - original draft; Writing - review & editing. Darren J. Koppel: Conceptualization; Investigation; Validation; Visualization; Writing - review & editing. William J. Walters: Formal analysis; Methodology; Software. Fenny Kho: Conceptualization; Writing - review & editing. Astley Hastings: Conceptualization; Funding acquisition; Investigation; Methodology; Project administration; Resources; Supervision; Writing - review & editing.Peer reviewe

    High resolution visualisation of tiemannite microparticles, essential in the detoxification process of mercury in marine mammals

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    RvH and AH are funded by the Net Zero Technology Centre and the University of Aberdeen, through their partnership with the UK National Decommissioning Centre, and DEFRA (ETPP-33/C10). RvH received additional funding from the University of Aberdeen under the interdisciplinary project funding and the internal funding to pump-prime interdisciplinary research and impact (CF10723-32). AH received additional funding from the UK Energy Research Centre research programme (UKERC-4, EP/S029575/1). CG is funded by Chevron through its Anchor Partnership with the UK National Decommissioning Centre. The Scottish Marine Animal Stranding Scheme is funded by Marine Scottland with additional support provided by the University of Glasgow.Peer reviewedPublisher PD

    Lifetime measurement of the 2₁⁺ state in ⁷⁴Rb and isospin properties of quadrupole transition strengths at N = Z

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    Self-conjugate nuclei in the A ≈ 70–80 region have attracted a great deal of attention due to phenomena such as shape coexistence and increasing collectivity along the N=Zline. We investigate the structure of nuclei in this region through lifetime measurements using the GRETINA array. The first implementation of the Differential Recoil Distance Doppler Shift technique with fast radioactive beams is demonstrated and verified through a measurement of the well-known B(E2; 2₁⁺→ 0₁⁺)transition strength in ⁷⁴Kr. The method is then applied to determine the B(E2; 2₁⁺→ 0₁⁺) transition strength in ⁷⁴Rb, the heaviest odd–odd N=Z nucleus for which this quantity has been determined. This result and extended systematics along N=Z suggest the dominance of the isoscalar part of the quadrupole transition strengths in self-conjugate nuclei, as well as the possible presence of shape coexistence in ⁷⁴Rb

    Constraining the rp-process by measuring 23

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    The 23Al(p, γ)24Si stellar reaction rate has a significant impact on the light-curve emitted in X-ray bursts. Theoretical calculations show that the reaction rate is mainly determined by the properties of direct capture as well as low-lying 2+ states and a possible 4+ state in 24Si. Currently, there is little experimental information on the properties of these states. In this proceeding we will present a new experimental study to investigate this reaction, using the surrogate reaction 23Al(d,n) at 47 AMeV at the National Superconducting Cyclotron Laboratory (NSCL). We will discuss our new experimental setup which allows us to use full kinematics employing the Gamma-Ray Energy Tracking In-beam Nuclear Array (GRETINA) to detect the γ-rays following the de-excitation of excited states of the reaction products and the Low Energy Neutron Detector Array (LENDA) to detect the recoiling neutrons. The S800 was used for identification of the 24Si recoils. As a proof of principle to show the feasibility of this concept the Q-value spectrum of 22Mg(d,n)23Al is reconstructed
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