Results 51 to 60 of about 24,708 (261)

Long-term organic manure substitution enhances soil carbon stability via organically complexed iron oxides: Evidence from a 12-year field experiment

Geoderma
Organic amendments regulate soil organic carbon (SOC) and mineral-associated organic carbon (MAOC) stability by altering iron oxides. However, most sequential extraction studies for iron oxides have focused on bulk soil instead of mineral-associated ...
Yiming Xian, Xingyu Li, Rong Huang, Jiang Liu, Ni Zeng, Shiwei Li, Changquan Wang, Bing Li   +7 more
doaj   +1 more source

The Nature of Iron Oxide Distribution in Some Calcareous and Gypsiferous Soils

Tikrit Journal for Agricultural Sciences, 2022
The study area is located within two regions. The first site in Tikrit city (Tikrit University) represents gypsiferous soils and the second site represents calcareous soils in Erbil Governorate.
Abha Kamal, Abdullah Rashid
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

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

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

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

Interactions of molybdenum and vanadium with iron nanoparticles [PDF]

, 2010
Molybdenum, vanadium and iron are important micro and macro nutrients, respectively, for all living organisms. Their cycles and budgets in the natural environment is affected by - and affects many different processes.
Brinza, Loredana
core  

Iron and other transition metals in Patagonian riverborne and windborne materials: Geochemical control and transport to the southern South Atlantic Ocean [PDF]

, 2003
The bulk of particulate transition metals transported by Patagonian rivers shows an upper crustal composition. Riverine particulate 0.5 N HCl leachable trace metal concentrations are mainly controlled by Fe-oxides. Complexation of Fe by dissolved organic
Probst, Jean-Luc, Gaiero, Diego M., Leleyter, Lydia, Depetris, Pedro J., Bidart, Susana M.   +4 more
core   +1 more source

From energy provision to protein synthesis: Tunnelling nanotubes as mediators of intercellular metabolic cooperation in cancer

FEBS Open Bio, EarlyView.
The cytoskeleton‐mediated transport of mitochondria via tunnelling nanotubes restores respiration, increases ATP production, rescues cells from apoptosis, activates the AKT/mTOR signalling pathway, promotes cell migration and invasiveness, contributes to cancer progression and treatment resistance.
Stanislava Martínková, Jan Trnka
wiley   +1 more source

Enzymatic iron oxidation by Leptothrix discophora: identification of an iron-oxidizing protein [PDF]

Applied and Environmental Microbiology, 1992
An iron-oxidizing factor was identified in the spent culture medium of the iron- and manganese-oxidizing bacterial strain Leptothrix discophora SS-1. It appeared to be a protein, with an apparent molecular weight of approximately 150,000. Its activity could be demonstrated after fractionation of the spent medium by sodium dodecyl sulfate-polyacrylamide
P L, Corstjens, J P, de Vrind, P, Westbroek, E W, de Vrind-de Jong   +3 more
openaire   +2 more sources