Results 41 to 50 of about 44,635 (261)

Oberflächen-Koordinationschemie und Redox-Prozesse: Zur Auflösung von Eisen(III)-oxiden unter Lichteinfluss

CHIMIA, 1988
The solubility of iron in surface waters and atmospheric water is partially controlled by photochemical processes. The increase in the solubility of iron in natural aquatic systems occurs most efficiently through reductive dissolution of iron(III)(hydr ...
Barbara Sulzberger, Christophe Siffert, Werner Stumm   +2 more
doaj   +1 more source

CHANGES IN FRACTIONS OF SOME MICRONUTRIENTS AS AFFECTED BY CONTINUOUS CROPPING AND LONG-TERM APPLICATION OF MINERAL AND ORGANIC FERTILIZER. [PDF]

Journal of Soil Sciences and Agricultural Engineering, 2014
Soil samples were collected from on-going long-term experiment at Bahtim area, Kalubia Governorate, Egypt, to study the distribution of various forms of iron, manganese, zinc and copper.
S. A. El-Tohamy, M.M. El-Kholy, K.S. El-Hedek   +2 more
doaj   +1 more source

PANoptosis in the pathogenesis of myelodysplastic syndromes

Molecular Oncology, EarlyView.
PANoptosis, a combination of three types of programmed cell death, is mediated by a large protein complex called a PANoptosome. In healthy bone marrow hematopoietic cells, PANoptosis is restricted by inhibitory signaling. In MDS, bone marrow cells become sensitive to the PANoptotic stimuli due to the aberrant inactivation of inhibitory signaling or ...
Rohit Thalla, Jyoti Lamichhane, Cameron Lewis, Peter Breslin, Jiwang Zhang   +4 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

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

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

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

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