Results 91 to 100 of about 2,338 (195)

Ferrous iron formation following the co-aggregation of ferric iron and the Alzheimer's disease peptide β-amyloid (1-42) [PDF]

, 2014
For decades, a link between increased levels of iron and areas of Alzheimer's disease (AD) pathology has been recognized, including AD lesions comprised of the peptide β-amyloid (Aβ).
van der Laan, Gerrit, Jenkins, C.A., Collingwood, Joanna F., Everett, James, Cespedes, E., Dobson, J., Collingwood, J.F., Dobson, Jon, Arenholz, Elke, Telling, N.D., Arenholz, E., Céspedes, Eva, Shelford, Leigh R., Exley, Chris, Exley, C., Jenkins, Catherine A., Everett, J., Shelford, L.R., Telling, Neil D.   +18 more
core   +1 more source

Scaling up the production of biogenic magnetite nanoparticles

, 2015
Although there are numerous examples of large-scale commercial microbial synthesis routes for organic bioproducts, few studies have addressed the obvious potential for microbial systems to produce inorganic functional biomaterials at scale.
Byrne, J M, Lloyd, Jonathan; id_orcid, School of Earth and Environmental Sciences, Muhamadali, H, Coker, Victoria; id_orcid, Cooper, J   +5 more
core   +1 more source

Searching for single domain magnetite in the “pseudo-single-domain” sedimentary haystack: Implications of biogenic magnetite preservation for sediment magnetism and relative paleointensity determinations

, 2012
Magnetic hysteresis measurements of sediments have resulted in widespread reporting of “pseudo-single-domain”-like magnetic properties. In contrast, the ideal single domain (SD) properties that would be expected to be responsible for high quality ...
Roberts, A. P., Chang, Liao, Florindo, Fabio, Palaeomagnetism and environmental magnetism of magnetofossils, Florindo, F., Heslop, D., Liao, Chang, Larrasoaña, Juan C., Heslop, David, Roberts, Andrew P., Roberts, A.P., Larrasoaña, J. C., Larrasoaña, J.C., Paleomagnetism, Chang, L.   +14 more
core   +1 more source

Iron-rich microband formation in marine sediments by hydrothermal iron cycling bacteria at Lucky Strike−

Communications Earth & Environment
Models describing banded iron formation deposition beneath oxygenated Paleoproterozoic marine shelf waters assume that microaerophilic iron-oxidizing microorganisms were significant contributors.
Jérémie Aubineau, Ernest Chi Fru, Christine Destrigneville, Thierry Decrausaz, Fleurice Parat, Fabien Baron, Alexandra Nederbragt, Manuel Henry, Alain Castillo, Céline Rommevaux, Valérie Chavagnac   +10 more
doaj   +1 more source

Modelling magnetite biomineralisation: the interactions of proteins and Fe3O4 surfaces

The biosynthesis of magnetite is the earliest known example of biomineralisation; how-ever, much of the detailed atomistic mechanisms by which the process occurs are unknown. Within the bacterial strain Magnetospirillum magneticum AMB-1, the formation of
Monnington, Amy Elizabeth
core  

Environmental Application of Biogenic Magnetite Nanoparticles to Remediate Chromium(III/VI)-Contaminated Water

, 2019
The physicochemical characteristics of biogenic minerals, such as high specific surface areas and high reactivity and the presence of a bacterial carrier matrix, make them promising for various applications. For instance, catalysts, adsorbents, oxidants,
Yul Roh, Yumi Kim
core   +1 more source

Life in a Benthic Mirror‐World: Evidence for Deep‐Living Magnetotactic Bacteria in Hydrothermally Bottom‐Up Oxygenated Pacific Ridge Flank Sediments

Geophysical Research Letters
Low‐temperature hydrothermal fluids in crustal rocks of the Clarion‐Clipperton‐Zone (East Pacific) supply dissolved oxygen into the sediment from below.
Adrian Felix Höfken, Tilo vonDobeneck, Michael Winklhofer, Thomas Kuhn, Sabine Kasten   +4 more
doaj   +1 more source

Ferrous hydroxy carbonate is a stable transformation product of biogenic magnetite

, 2005
An ~1:1 mixture of ferrihydrite and nanocrystalline akaganeite (β-FeOOH; 10–15 nm) was incubated with Shewanella putrefaciens (strain CN32) under anoxic conditions with lactate as an electron donor and anthraquinone-2,6-disulfonate (AQDS) as an electron ...
Dohnalkova, Alice C., Mccready, David E., Kukkadapu, Ravi K., Fredrickson, James K., Kennedy, David W., Zachara, John M.   +5 more
core  

Microbial iron cycling illuminates the biological contribution and potential climate drivers of deep-sea rare earth element enrichment

Communications Earth & Environment
Deep-sea sediments enriched in rare earth elements represent important potential resources and paleoceanographic archives. The transfer of these elements from marine particles (e.g., Fe-Mn (oxyhydr)oxides or organic matter) to phosphate phases is ...
Pengcong Wang, Deng Liu, Peyman Babakhani, Mingyu Zhao, Yangtao Zhu, Jiayi Ma, Ganglan Zhang, Chutong Liu, Jun Cao, Fang Chen, Xiaoqiang Yang, Yinan Deng   +11 more
doaj   +1 more source

Green biogenic synthesis of magnetite nanoparticles from indigenous Banksia Ashbyi leaf for enhanced sonochemical dye degradation

Materials Research Express
Developing alternative green and sustainable technologies to prevent, reduce, and remove toxic dyes present in effluent generated by the textile industry is of global importance.
A F M Fahad Halim, Gérrard Eddy Jai Poinern, Derek Fawcett, Nikolay Anguelov, Rupam Sharma, Peter Chapman, Yuanyuan Feng   +6 more
doaj   +1 more source