Results 61 to 70 of about 1,946 (206)

Efficiency calibration and optimization of a liquid scintillation spectrometer for low level 55Fe and 63Ni measurements

, 2023
An experimental study on the counting efficiency, background, and Lower Limit of Detection (LLD) of a liquid scintillation spectrometer was carried out for establishing a measurement technique suitable for low level activity measurements of 55Fe and 63Ni
Manjón Collado, Guillermo, García León, Manuel, García León, José Luis   +2 more
core   +1 more source

Wind‐Driven Iron Supply by Ekman Buoyancy Flux Enhances Phytoplankton Bloom in the Antarctic Circumpolar Current

Journal of Geophysical Research: Oceans, Volume 130, Issue 8, August 2025.
Abstract The Southern Ocean today is a globally relevant sink for atmospheric carbon dioxide (CO2 ${\text{CO}}_{2}$), where the biological uptake of carbon through primary productivity is largely controlled by widespread iron (Fe) limitation. We analyze observations from a submesoscale‐resolving cross‐section of the Antarctic Circumpolar Current (ACC ...
R. Mole, W. J. von Appen, H. Becker, F. A. Haumann, T. Kanzow, A. Piñango, J. Stimpfle, S. Trimborn, E. F. Young   +8 more
wiley   +1 more source

Gain measurements of the first proof-of-concept PicoAD prototype with a 55Fe X-ray radioactive source

, 2023
The Picosecond Avalanche Detector is a multi-junction silicon pixel detector devised to enable charged-particle tracking with high spatial resolution and picosecond time-stamping capability.
Iacobucci, G, Rücker, H, S. Zambito, L. Paolozzi, Y. Favre, Saidi, J, Gonzalez-Sevilla, S, J. Saidi, R. Kotitsa, H. Rücker, Cardella, R, Kotitsa, R, Zambito, S, M. Milanesio, C. Magliocca, Cadoux, F, A. Picardi, Debieux, S, R. Cardarelli, M. Nessi, M. Vicente Barreto Pinto, Martinelli, F, D. Ferrere, Trusch, A, Cardarelli, R, Munker, M, Picardi, A, S. Gonzalez-Sevilla, Gurimskaya, Y, S. Debieux, T. Moretti, A. Trusch, Favre, Y, F. Martinelli, F. Cadoux, Pinto, M Vicente Barreto, Magliocca, C, M. Munker, Moretti, T, Paolozzi, L, Nessi, M, R. Cardella, G. Iacobucci, P. Valerio, Ferrere, D, Valerio, P, Y. Gurimskaya, Milanesio, M   +47 more
core   +1 more source

Method for Determination of 55Fe in Radioactive Used Oil from Nuclear Power Plant

Yuanzineng kexue jishu
55Fe is an important corresponding activation product during the operation of nuclear power plants. 55Fe may be present in the used oil required for main circuit mechanical equipment through cross-contaminating during maintenance activities-including ...
MA Lina1, 2, FAN Fuyou3, QIU Xiangping3, WANG Lusheng1, 2, DAI Xiongxin1, 2
doaj   +1 more source

Effects of L-DOPA on 55Fe(II) uptake by cortical cells.

, 2013
Neurons were treated with L-DOPA (0, 1, 5, 10, 100, 200 µM) in DMEM+5%FBS for 16 hours and then incubated with 2 µM of 55Fe(II) in 0.27 M sucrose (pH 6.5) at 37°C for 30 min. The 55Fe(II) taken into neurons was then measured.
Zhong-ming Qian (5653900), Xiao Mei Wu (374333), Fang Du (232423), Wing-ho Yung (5653903), Ting-yuk Tsim (374336), Ya Ke (374338), Li Zhu (67404)   +6 more
core   +1 more source

Extreme plasticity in the photosystem composition of a low‐light Prochlorococcus ecotype in response to iron and light

Limnology and Oceanography Letters, Volume 10, Issue 1, Page 82-90, February 2025.
Abstract Light affects the cellular iron (Fe) requirement of phytoplankton because of its presence in major photosynthetic proteins. Thus, interactions between variable Fe concentrations and light intensities could restrict photosynthetic carbon fixation in the ocean.
Xin Zhang, William G. Sunda, Haizheng Hong, Dalin Shi   +3 more
wiley   +1 more source

Isolation and quantification of 55Fe and 63Ni in reactor effluents using extraction chromatography and liquid scintillation analysis

, 2006
A novel extraction chromatographic resin based on diisobutyl ketone has been developed for the isolation of 55Fe. This material has been used in conjunction with a dimethylglyoxime-based resin for the sequential separation of 55Fe and 63Ni and isolation ...
Warwick, P.E., Croudace, I.W.
core   +1 more source

Gan Photonic Crystals: Spectral Dynamics in UV, X‐Ray, and Alpha Radiation

Advanced Photonics Research, Volume 6, Issue 1, January 2025.
The study explores GaN photonic crystals, showing enhanced optical responses to UV, X‐ray, and alpha radiation. Integrating these structures triples quantum efficiency compared to plain GaN, improving scintillation and photoluminescence. The results highlight potential applications in radiation detection, medical imaging, and optoelectronics, with ...
Firat Yasar, Noriaki Kawaguchi, Takayuki Yanagida, Isabel Harrysson Rodrigues, Yleana Evelyn Ceballos, Roberto Prado‐Rivera, Sam Keo   +6 more
wiley   +1 more source

Patterns of siderophore production and utilization at Station ALOHA from the surface to mesopelagic waters

Limnology and Oceanography, Volume 70, Issue 1, Page 128-145, January 2025.
Abstract The North Pacific subtropical gyre is a globally important contributor to carbon uptake despite being a persistently oligotrophic ecosystem. Supply of the micronutrient iron to the upper ocean varies seasonally to episodically, and when coupled with rapid biological consumption, results in low iron concentrations.
Randelle M. Bundy, Lauren E. Manck, Daniel J. Repeta, Matthew J. Church, Nicholas J. Hawco, Rene M. Boiteau, Jiwoon Park, Edward F. DeLong, Mak A. Saito   +8 more
wiley   +1 more source

Insights into the role of glycerophospholipids on the iron export function of SLC40A1 and the molecular mechanisms of ferroportin disease

The FASEB Journal, Volume 38, Issue 13, 15 July 2024.
Questions remain unanswered about the molecular mechanisms of iron export by SLC40A1. Our study highlights the existence of interactions between SLC40A1 and lipids of the plasma membrane. These interactions occur in the vicinity of two charged/polar clusters that play a critical role in the formation of the SLC40A1 inner gate.
Rim Debbiche, Ahmad Elbahnsi, Kévin Uguen, Chandran Ka, Isabelle Callebaut, Gérald Le Gac   +5 more
wiley   +1 more source