A5023308997- Geomagnetism and Paleomagnetism Studies
- Geology and Paleoclimatology Research
- Geological and Geochemical Analysis
- Geophysical and Geoelectrical Methods
- Pleistocene-Era Hominins and Archaeology
- Geological formations and processes
- Astro and Planetary Science
- Archaeology and ancient environmental studies
- High-pressure geophysics and materials
- Planetary Science and Exploration
- Geochemistry and Geologic Mapping
- Iron oxide chemistry and applications
- Geochemistry and Elemental Analysis
- Magnetic and Electromagnetic Effects
- Minerals Flotation and Separation Techniques
- Maritime and Coastal Archaeology
- earthquake and tectonic studies
- Black Holes and Theoretical Physics
- Magnetic Properties and Synthesis of Ferrites
- Earthquake Detection and Analysis
- Cosmology and Gravitation Theories
- Magnetic Properties and Applications
- Characterization and Applications of Magnetic Nanoparticles
- Paleontology and Stratigraphy of Fossils
- Evolution and Paleontology Studies
University of Minnesota
2016-2025
Twin Cities Orthopedics
2014-2025
University of Minnesota System
2011-2023
Maimonides Medical Center
2018-2023
Charles River Laboratories (Netherlands)
2019
Institute of Magnetism
2017
Manufacturing Advocacy & Growth Network (United States)
2016
John Wiley & Sons (United States)
2016
Saint Peter's University
2006-2011
Shepherd University
2009
We describe a modification to existing algorithms for the calculation of first‐order reversal curve (FORC) diagrams using locally weighted regression smoothing (often referred as “LOESS” smoothing). The new algorithm offers several advantages over current methods: (1) it allows FORC distribution be calculated constant factor all way H c = 0 axis; (2) noninteger values can specified, enabling finer control degree and development graphical method automated selection optimum factor; (3)...
To update, clarify, and extend IDEAL concepts recommendations.New surgical procedures, devices, other complex interventions need robust evaluation for safety, efficacy, effectiveness. Unlike new medicines, there is no internationally agreed pathway generating analyzing data throughout the life cycle of innovations. The Framework Recommendations were designed to provide this they have been used increasingly since their introduction in 2009. Based on a Delphi survey, expert workshop major...
Page-Ladson, Florida, provides evidence of the oldest human occupation in North American Gulf Coastal Plain at 14,550 B.P.
Significance High-resolution reconstructions of storm history and storms’ underlying mechanisms in inland areas are critical but limited by a paucity suitable paleoproxies. Here we use soil-derived magnetic minerals preserved stalagmite as new paleohydrological proxy. This proxy enables us to rebuild decadal resolution records the eastern Asian monsoon area since 8.6 ky. Variance storms central China was found exhibit close correlation with El Niño−Southern Oscillation activity at millennial...
We compared implicit and explicit ingroup bias across four minority groups who ranged in status from high (Jews Asians) to medium (overweight people) low (poor people). Minorities relatively showed more than minorities status. In fact, overweight poor people automatic preference for the dominant outgroup (i.e., own group devaluation). The relationship between perceived was reliably positive whether based on category membership (r = .54) or members' perceptions of their .36), but only at...
Compelling archaeological evidence of an occupation older than Clovis (~12.8 to 13.1 thousand years ago) in North America is present at only a few sites, and the stone tool assemblages from these sites are small varied. The Debra L. Friedkin site, Texas, contains assemblage 15,528 artifacts that define Buttermilk Creek Complex, which stratigraphically underlies dates between ~13.2 15.5 ago. Complex confirms emerging view people occupied Americas before provides large artifact explore origins.
Research Article| June 01, 2005 Exsolved magnetite inclusions in silicates: Features determining their remanence behavior Joshua M. Feinberg; Feinberg 1Department of Earth and Planetary Science, University California, Berkeley, 340 McCone Hall, California 94720, USA Search for other works by this author on: GSW Google Scholar Gary R. Scott; Scott 2Berkeley Geochronology Center, 2455 Ridge Road, 94709, Paul Renne; Renne 3 Department USA, Berkeley Hans-Rudolf Wenk 4Department Author Article...
The whole story An accurate, precise record of the carbon-14 ( 14 C) content atmosphere is important for developing chronologies in climate change, archaeology, and many other disciplines. Cheng et al. provide a that covers full range C dating method (∼54,000 years), using paired measurements C/ 12 thorium-230 230 Th) ages from two stalagmites Hulu Cave, China. advantage matching absolute Th allowed authors to fashion seamless single source with low uncertainties, particularly older...
Old minerals expose an ancient field Mercury is the only terrestrial planet other than Earth with active, internally generated magnetic field. Results from MESSENGER spacecraft indicate that almost as old planet. Johnson et al. took advantage of close flybys to extract evidence Certain are able “lock in” signature a at time they crystallize. This remnant magnetization was found in region on believed be 3.8 billion years old. Science , this issue p. 892
MAVEN magnetic field data indicate that a martian dynamo was active 4.5 and 3.7 Ga ago.
Research Article| February 01, 2016 Age of the Laschamp excursion determined by U-Th dating a speleothem geomagnetic record from North America Ioan Lascu; Lascu * 1Institute for Rock Magnetism, University Minnesota, 100 Union Street SE, Minneapolis, Minnesota 55455, USA2Department Earth Sciences, 310 Pillsbury Drive USA3Department Cambridge, Downing Street, CB2 3EQ, UK *E-mail: il261@cam.ac.uk Search other works this author on: GSW Google Scholar Joshua M. Feinberg; Feinberg USA Jeffrey A....
Abstract Mantle xenoliths provide our clearest look at the magnetic mineral assemblages below Earth's crust. Previous investigations of mantle suggested absence magnetite and metals, proposed that even if such minerals were present, they would be above their Curie temperatures conditions. Here we use measurements to examine four exceptionally fresh suites xenoliths, show occurs systematically, albeit in variable amounts depending on tectonic setting. Specimens from low geotherm regions hold...
Iron oxide nanoparticles are present throughout the Earth and undergo mineral phase transformations that affect their stability reactivity. The formation of iron hematite from a 2-line ferrihydrite (2lnFh) precursor requires both transformation growth. Whether occurs before or after substantial particle growth, by which mechanisms particles grow, remain unclear. We conducted time-resolved studies employing X-ray diffraction, room temperature cryogenic transmission electron microscopy,...
The ability for magnetite to act as a recyclable electron donor and acceptor Fe-metabolizing bacteria has recently been shown. However, it remains poorly understood whether microbe-mineral interfacial transfer processes are limited by the redox capacity of surface or that whole particles. Here we examine this issue phototrophic Fe(II)-oxidizing Rhodopseudomonas palustris TIE-1 Fe(III)-reducing Geobacter sulfurreducens, comparing nanoparticles (d ≈ 12 nm) against microparticles 100-200 nm)....
Abstract A key objective of the Perseverance rover mission is to acquire samples Martian rocks for future return Earth. Eventual laboratory analyses these would address questions about evolution climate, interior, and habitability. Many such investigations benefit greatly from bedrock that are oriented in absolute geographic coordinates. However, Mars 2020 was designed without a requirement orienting samples. Here we describe methodology developed drill cores frame its application...
Microorganisms are important catalysts for the oxidation of reduced inorganic sulfur compounds. One environmentally source is metal sulfide minerals that occur in economic mineral deposits and mine waste. Previous research found Sulfuriferula spp. were abundant active long-term weathering experiments with simulated waste rock tailings from Duluth Complex, Northern Minnesota. We therefore isolated several strains these characterized their metabolic genomic properties to provide insight into...
Geomagnetic methods allow us to explore the behavior of Earth's geodynamo, constrain composition and structure, locate critical minerals other resources essential for modern technologies energy transition. The magnetic properties rocks sediments are assumed be stable largely attributable inorganic processes. This conventional view overlooks mounting evidence microorganisms as key players in rock transformations geological Iron-bearing ubiquitous most environments commonly used by electron...
Abstract On behalf of the authors and readers Reviews Geophysics (RoG), American Geophysical Union, broader scientific community, editors wish to wholeheartedly thank those who reviewed manuscripts for RoG in 2024.