Results 61 to 70 of about 235,275 (302)

Iron transformation mediates phosphate retention across a permafrost thaw gradient

Communications Earth & Environment
Phosphorus limits primary productivity in many (Sub-)Arctic ecosystems and may constrain biological carbon sequestration. Iron (III) oxides strongly bind phosphate in soils but can dissolve under flooded, reducing conditions induced by permafrost thaw ...
Maximilian Barczok, Chelsea Smith, Lauren Kinsman-Costello, Monique Patzner, Casey Bryce, Andreas Kappler, David Singer, Elizabeth Herndon   +7 more
doaj   +1 more source

Combined 5‐aminolevulinic acid and ferric ammonium citrate treatment promotes hair follicle growth by activating dermal papilla cells

FEBS Open Bio, EarlyView.
5‐Aminolevulinic acid combined with ferric ammonium citrate (5‐ALA/FAC) stimulates dermal papilla cell activity and promotes hair follicle growth. The treatment enhances ERK and AKT signaling, increases hair‐inductive gene expression, and restores dermal papilla function suppressed by dihydrotestosterone and oxidative stress, resulting in enhanced hair
Han‐Wook Ryu, Eok‐Soo Oh, Sewoon Kim
wiley   +1 more source

Is the nature of magnetic order in copper-oxides and in iron-pnictides different?

, 2009
We use the results of first-principles electronic structure calculations and a strong coupling perturbation approach, together with general theoretical arguments, to illustrate the differences in super-exchange interactions between the copper-oxides and ...
Anisimov, Cao, Chen, Chen, Chubukov, de La Cruz, Efstratios Manousakis, Efthimios Kaxiras, Haule, Jun Ren, Kamihara, Kamihara, Klauss, Kuroki, Manousakis, Manousakis, Manousakis, Mazin, Nakamura, Raghu, Ren, Sheng Meng, Singh, Vaknin, Vildosola, Wen, Xu, Yildirim   +27 more
core   +1 more source

Mineralogy of Zhijiang plinthitic red clay in Hangzhou city

浙江大学学报. 农业与生命科学版, 2000
The mineral compositions of red and white plinthites separated from Zhijiang plinthitic red clay near Hangzhou, Zhejiang province were analysed by means of XRD and XRF. The total Fe, Mn and P contents in red plinthite were much higher than those in white
ZHANG Ming-kui
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

Impact specimen geometry on T23 and TP347HFG steels behaviour during steam oxidation at harsh conditions [PDF]

, 2016
Ferritic T23 steel and austenitic TP347HFG steel have been studied with an emphasis on understanding the impact of specimen geometry on their steam oxidation behaviour.
Dudziak, T., Lukaszewicz, Mikolaj, Nicholls, John J., Simms, Nigel J.   +3 more
core   +1 more source

Isomers of Iron(III) Oxides and Cobalt(III) Oxides and Their Redox Properties: Quantum-Chemical Insights

Molecules
Iron(III) oxide and cobalt(III) oxide can form distinct spatial and spin configurations. Kite, spindle, and linear geometries have been shown to be stable for the specified electron configurations; however, these oxides generally favor higher open-shell ...
Sapajan Ibragimov, Leonard Komando, Maciej Bobrowski   +2 more
doaj   +1 more source

UiO‐66 metal–organic frameworks in biomedicine: From structural tunability to bioimaging, photodiagnostics, and photodynamic cancer therapy

FEBS Open Bio, EarlyView.
UiO‐66(Zr) metal–organic frameworks are chemically stable, biocompatible, and highly tunable nanomaterials. Their modular structure enables controlled drug delivery, multimodal bioimaging, and light‐activated photodynamic therapy, supporting integrated diagnostic and therapeutic (theranostic) applications in cancer and biomedical research.
Veronika Huntošová, Grigorii Rakhalskii, Miroslav Almáši   +2 more
wiley   +1 more source

Sources and mechanisms for the enrichment of highly reactive iron in euxinic Black Sea sediments [PDF]

, 2004
The deep basinal euxinic sediments of the Black Sea are enriched in iron that is highly susceptible to sulfidization compared to oxic/suboxic continental margin sediments in the Black Sea and oxic/dysoxic continental margin and deep-sea sediments ...
Anderson, T.F., Raiswell, R.
core  

Role of the sediments of two tropical dam reservoirs in the flux of metallic elements to the water column [PDF]

, 2012
In tropical climates, the high rainfall and temperature, throughout the annual cycle, allow high leaching rates of metallic elements from the basin upstream, which accumulate in the reservoirs.
Barriga, Fernando, Fonseca, Rita, Morais, Manuela, Patinha, Carla   +3 more
core   +1 more source