Results 141 to 150 of about 14,752 (295)

Development of microfluidic technology for in-situ determination of iron and manganese in natural aquatic systems

, 2014
In-situ sensors are crucially important for understanding the physico-chemical processes that occur in natural water environments. Manual sampling with laboratory analysis cannot provide the temporal and spatial resolution required to characterize marine
Milani, Ambra
core  

Electroenzymatic CO2 Fixation

Angewandte Chemie International Edition, EarlyView.
Electroenzymatic CO2 fixation enables energy‐efficient, highly selective synthesis of complex molecules. Unlocking its full potential requires fundamental understanding of electrode‐coupled reductases and carboxylases. This review critically discusses available enzymes, product scope, and key thermodynamic and kinetic considerations, highlighting ...
Leonardo Castañeda‐Losada, Michael Richter, Christophe Léger, Vincent Fourmond, Nicolas Plumeré   +4 more
wiley   +1 more source

Does planetary differentiation really fractionate iron isotopes?

, 2007
International audienceThe difference in the mean Fe isotope composition of samples from the Earth, Moon, Mars and Vesta has been recently interpreted as tracking contrasted planetary accretion mechanisms [F. Poitrasson, A.N. Halliday, D.C.
Poitrasson, Franck
core   +1 more source

A phase 1b randomised clinical trial evaluating BBI-001, a non-absorbed oral therapeutic for the treatment of iron overload

Scientific Reports
Non-transfusion-dependent iron overload is the result of excessive dietary iron absorption, most commonly caused in populations of European descent by the genetic disorder HFE-related hemochromatosis (HH).
Curtis Scribner, Jamie Cope, Philip Ryan, John K. Olynyk, John Ryan, J. Daniel Griffin, Cory Berkland   +6 more
doaj   +1 more source

Quantification of Macrophage Cellular Ferrous Iron (Fe2+) Content using a Highly Specific Fluorescent Probe in a Plate-Reader

Bio-Protocol
Macrophages are at the center of innate immunity and iron metabolism. In the case of an infection, macrophages adapt their cellular iron metabolism to deprive iron from invading bacteria to combat intracellular bacterial proliferation.
Philipp Grubwieser, Natascha Brigo, Markus Seifert, Manuel Grander, Igor Theurl, Manfred Nairz, Günter Weiss, Christa Pfeifhofer-Obermair   +7 more
doaj   +1 more source

Kinetic Isotope Effects During Reduction of Fe(III) to Fe(II): Large Normal and Inverse Isotope Effects for Abiotic Reduction and Smaller Fractionations by Phytoplankton in Culture

Geochemistry, Geophysics, Geosystems
Iron stable isotopes (δ56Fe) are a useful tool for studying Earth processes, many of which involve redox transformations between Fe(III) and Fe(II).
S. G. John, E. A. Boyle, B. R. Cunningham, F.‐X. Fu, S. Greene, C. Hodierne, D. A. Hutchins, A. Kavner, A. L. King, A. D. Rosenberg, M. A. Saito, A. Wasson   +11 more
doaj   +1 more source

Molybdenum isotope fractionations between ferromanganese oxides and seawater influenced ancient sedimentary isotopic signatures

Communications Earth & Environment
The use of molybdenum isotopes (δ98Mo) as a paleo-redox proxy requires quantifications of fluxes and isotopic fractionations in each molybdenum sink.
Mengchun Cao, Guang-Yi Wei, Feifei Zhang, Xiangwen Ren, Xuefa Shi, Yi-Bo Lin, Tao Li, Sihui Chen, Hong-Fei Ling, Jian Cao   +9 more
doaj   +1 more source

Early planetesimal differentiation and late accretion shaped Earth’s nitrogen budget

Nature Communications
The relative roles of protoplanetary differentiation versus late accretion in establishing Earth’s life-essential volatile element inventory are being hotly debated.
Wenzhong Wang, Michael J. Walter, John P. Brodholt, Shichun Huang   +3 more
doaj   +1 more source

Iron isotopes reveal distinct dissolved iron sources and pathways in the intermediate versus deep Southern Ocean. [PDF]

Proc Natl Acad Sci U S A, 2017
Abadie C, Lacan F, Radic A, Pradoux C, Poitrasson F.   +4 more
europepmc   +1 more source

Metal‐CO2 Batteries: By‐Product Challenges and Practical Pathways for Low CO2 Concentration Environment

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Metal‐CO2 batteries have recently emerged as an intriguing class of energy storage and conversion devices that simultaneously utilize and manage carbon dioxide. Originating from studies of CO2 contamination in metal‐air batteries, these systems have evolved into a distinct research direction, offering insights into CO2 electrochemistry and its
Sungmin Choi, Sooyeon Seok, Changmin Kim
wiley   +1 more source