Results 41 to 50 of about 952,040 (271)

Bulk properties of iron isotopes [PDF]

Physics of Atomic Nuclei, 2007
Nuclear level densities and radiative strength functions (RSFs) in 56Fe and 57Fe were measured using the 57Fe(3He, αγ) and 57Fe(3He, 3He′γ) reactions, respectively, at the Oslo Cyclotron Laboratory. A low-energy enhancement in the RSF below 4-MeV energy was observed. This finding cannot be explained by common theoretical models. In a second experiment,
Algin, E., Schiller, A., Voinov, A., Agvannluvsan, U., Belgya, T., Bernstein, L., Brune, C., Chankova, R., Garrett, P., Grimes, S., Guttormsen, M., Hjorth-Jensen, M., Hornish, M., Johnson, C., Massey, T., Mitchell, G., Rekstad, J., Siem, S., Younes, W.   +18 more
openaire   +2 more sources

Nitrogen Isotopes in the Global Ocean [PDF]

, 2013
Nitrogen is an essential nutrient for life. Its low abundance throughout much of the sunlit surface ocean limits the growth of primary producers that form the base of ocean ecosystems.
Somes, Christopher J., Somes, Christopher   +1 more
core  

Identification of an iron–hepcidin complex [PDF]

, 2008
Following its identification as a liver-expressed antimicrobial peptide, the hepcidin peptide was later shown to be a key player in iron homoeostasis. It is now proposed to be the 'iron hormone' which, by interacting with the iron transporter ferroportin,
Bui, T.T.T., Bui, Tam T.T., Rapisarda, C., Evans, R.W., Bui, T, Cammack, R, Drake, AF, Cammack, Richard, Rapisarda, C, Cammack, R., Drake, A, Evans, R W, Farnaud, SJ, Bui, TT, Evans, Robert W, Farnaud, Sebastien, Farnaud, S., Drake, Alex F., Evans, RW, Rapisarda, Chiara, Bui, Tam, Farnaud, Sébastien Jean-Claude, Drake, A.F., Farnaud, S   +23 more
core   +1 more source

Smaller is better: nanobodies meet NMR

FEBS Letters, EarlyView.
Nanobodies are single‐domain antigen‐binding fragments derived from camelid heavy chain antibodies. Their small size, high stability, and exceptional specificity make nanobodies uniquely useful probes for NMR studies of protein dynamics, transient conformational states, and protein–protein interactions.
Oleg Y. Dmitriev
wiley   +1 more source

Iron absorption from supplements is greater with alternate day than with consecutive day dosing in iron-deficient anemic women

Haematologica, 2020
In iron-depleted women without anemia, oral iron supplements induce an increase in serum hepcidin (SHep) that persists for 24 hours, decreasing iron absorption from supplements given later on the same or next day.
Nicole U. Stoffel, Christophe Zeder, Gary M. Brittenham, Diego Moretti, Michael B. Zimmermann   +4 more
doaj   +1 more source

Sudden anaerobization in Amphibacillus xylanus increases intracellular labile ferrous iron and inhibits cell growth

FEBS Open Bio, EarlyView.
Abruptly changing from aerobic to anaerobic conditions (sudden anaerobization) induced growth inhibition and a significant increase in intracellular labile ferrous iron in the aerotolerant anaerobe Amphibacillus xylanus. We found that free flavins mediate efficient electron transfer from NADH to ferric iron under anaerobic conditions, suggesting that ...
Shinya Kimata, Yoichi Sakai, Keisuke Tanaka, Etsuro Yoshimura, Ken Kitano, Morio Ishikawa, Tadahiro Nakamoto, Tsutomu Takayama, Hirofumi Inoue, Kaho Nomura, Tomonori Suzuki, Masataka Uchino, Akira Abe, Youichi Niimura   +13 more
wiley   +1 more source

Heavy iron isotopes in arc rocks reveal anoxic sediment recycling in subduction zones

Communications Earth & Environment
The formation mechanism of arc mafic rocks with heavy iron isotope signature remains enigmatic. Here we report Fe-Mo-Sr-Nd-Hf isotope data of arc rocks from Northeast China. The studied arc rocks have δ56Fe values (0.08‰ to 0.23‰) comparable to or higher
Zhigang Wang, Li-Qun Dai, Zi-Fu Zhao, Li-Tao Ma, Wei Fang, Xing-Mian Hu   +5 more
doaj   +1 more source

Human and faunal stable and radiogenic isotope data from four Bahraini and three Jordanian assemblages c. 5300 B.C. to 1500 AD

Data in Brief, 2021
This dataset presents carbon, nitrogen, oxygen (carbonates and phosphates) and strontium data from human and faunal remains from that portion of seven assemblages from Jordan and Bahrain currently curated at the Smithsonian Institution's National Museum ...
Damien Huffer
doaj   +1 more source

Superlubricity and Corrosion Inhibition Properties of Solvate Ionic Liquids in Hybrid Carbon Fiber Reinforced Plastic–Steel Interfaces

Advanced Engineering Materials, EarlyView.
Solvate ionic liquids lubrication reduced the coefficient of friction by ∼60% compared to dry sliding, reaching steady‐state values as low as 0.04–0.05. Corrosion weight‐loss measurements in 1 M HCl further demonstrated significant inhibition behavior, with only 100 ppm of [Li(G3)][TFSI] (∼68.5 μL/L) reducing corrosion‐product weight loss by 63 ...
Sameh Dabees, Timothy Harte, Bhagya Dharmasiri, Y. Athulya Wickramasingha, David J. Hayne, Daniel J. Eyckens, Luke C. Henderson   +6 more
wiley   +1 more source

Iron isotope effect in SmFeAsO0.65 and SmFeAsO0.77H0.12 superconductors: A Raman study

AIP Advances, 2016
We report the inelastic light scattering studies on SmFeAsO0.65 and SmFeAsO0.77H0.12 with iron isotopes namely 54Fe and 57Fe. In both of these systems under investigation we observed a significant shift in the frequency of the phonon modes associated ...
Birender Singh, P. M. Shirage, A. Iyo, Pradeep Kumar   +3 more
doaj   +1 more source