A5004524995- Geomagnetism and Paleomagnetism Studies
- Geology and Paleoclimatology Research
- Geological and Geophysical Studies
- Geological formations and processes
- Paleontology and Stratigraphy of Fossils
- Geophysical and Geoelectrical Methods
- Geological and Geochemical Analysis
- Methane Hydrates and Related Phenomena
- Magnetic and Electromagnetic Effects
- Geochemistry and Elemental Analysis
- Hydrocarbon exploration and reservoir analysis
- Iron oxide chemistry and applications
- Characterization and Applications of Magnetic Nanoparticles
- Evolution and Paleontology Studies
- Genetic diversity and population structure
- Seismic Imaging and Inversion Techniques
- High-pressure geophysics and materials
- Pleistocene-Era Hominins and Archaeology
- Advanced Computational Techniques and Applications
- Vibration Control and Rheological Fluids
- Nuclear Physics and Applications
- Magnetic Properties and Applications
- Geochemistry and Geologic Mapping
- Genomics and Phylogenetic Studies
- Identification and Quantification in Food
Peking University
2016-2025
Qingdao National Laboratory for Marine Science and Technology
2018-2025
University of California, San Francisco
2024
Jiangxi University of Science and Technology
2024
San’an Optoelectronics (China)
2024
Xi'an Jiaotong University
2013-2023
Dalian Maritime University
2022
Ministry of Public Security of the People's Republic of China
2022
International Ocean Discovery Program
2019
University of New Caledonia
2019
Greigite (Fe 3 S 4 ) is an authigenic ferrimagnetic mineral that grows as a precursor to pyrite during early diagenetic sedimentary sulfate reduction. It can also grow at any time when dissolved iron and sulfide are available diagenesis. important in paleomagnetic, environmental, biological, biogeochemical, tectonic, industrial processes. Much recent progress has been made understanding its magnetic properties. inverse spinel collinear ferrimagnet with antiferromagnetic coupling between...
First‐order reversal curve (FORC) diagrams have become a standard tool in rock magnetism, yet magnetite is the only magnetic mineral that well characterized using FORC diagrams. We present for predominantly single‐domain (SD) synthetic aluminous hematite ( α ‐Fe 2‐x Al x O 3 ) and goethite ‐(FeAl)OOH) natural greigite (Fe S 4 pyrrhotite 7 8 to constrain interpretation of from samples. Hematite low spontaneous magnetizations negligible interactions, while higher can strong interactions. The...
Magnetic hysteresis measurements of sediments have resulted in widespread reporting “pseudo‐single‐domain”‐like magnetic properties. In contrast, the ideal single domain (SD) properties that would be expected to responsible for high quality paleomagnetic records are rare. Determining whether SD particles rare or common requires application techniques enable discrimination among different components a sediment. We apply range such and find much more than has been reported literature magnetite...
Single-cell resequencing (SCRS) provides many biomedical advances in variations detection at the single-cell level, but it currently relies on whole genome amplification (WGA). Three methods are commonly used for WGA: multiple displacement (MDA), degenerate-oligonucleotide-primed PCR (DOP-PCR) and annealing looping-based cycles (MALBAC). However, a comprehensive comparison of performance between these WGA has not yet been performed.We systematically compared advantages disadvantages...
Nearly one-quarter of all avian species is either threatened or nearly threatened. Of these, 73 are currently being rescued from going extinct in wildlife sanctuaries. One the previously most critically-endangered crested ibis, Nipponia nippon. Once widespread across North-East Asia, by 1981 only seven individuals two breeding pairs remained wild. The recovering ibis populations thus provide an excellent example for conservation genomics since every individual bird has been recruited genomic...
High-purity Fe3S4 (greigite) microcrystals with octahedral shape were synthesized via a simple hydrothermal method using surfactant. The as-prepared samples have the inverse spinel structure high crystallinity. saturation magnetization (Ms) reaches 3.74 μB at 5 K and 3.51 room temperature, which is larger than all reported values thus far. Electrical transport measurements show metallic behavior resistivity 40 times lower in any previous report. potential use of greigite as an anode...
Abstract Understanding marine environmental change and associated biological turnover across the Palaeocene–Eocene Thermal Maximum (PETM; ~56 Ma)—the most pronounced Cenozoic short-term global warming event—is important because of potential role ocean in atmospheric CO 2 drawdown, yet proxies for tracing productivity oxygenation PETM are limited results remain controversial. Here we show that a high-resolution record South Atlantic Ocean bottom water can be extracted from exceptionally...
Abstract Data from International Ocean Discovery Program (IODP) Expedition 371 reveal vertical movements of 1–3 km in northern Zealandia during early Cenozoic subduction initiation the western Pacific Ocean. Lord Howe Rise rose deep (∼1 km) water to sea level and subsided back, with peak uplift at 50 Ma north between 41 32 south. The New Caledonia Trough 2–3 55 45 Ma. We suggest these elevation changes resulted crust delamination mantle flow that led slab formation. propose a “subduction...
Pure ferrimagnetic greigite (Fe 3 S 4 ) has been synthesized by reacting ferric chloride with thiourea and formic acid at 170°C. Sample purity was confirmed X‐ray diffraction, neutron diffraction Mössbauer spectroscopy, coupled magnetic measurements. Scanning electron microscope observations indicate clear cubo‐octahedral polyhedral crystal morphologies. The grain sizes are as large 44 μ m. Detailed low‐ high‐temperature measurements document the previously poorly known properties of...
Abstract Magnetite occurs widely in natural environments both inorganic and biogenic forms. Discrimination of the origin magnetite has important implications, from searching for past microbial activity to interpreting paleomagnetic environmental magnetic records a wide range settings. In this study, we present rock electron microscopic analyses marine sediments continental margin Oman. Low‐temperature data reveal two distinct Verwey transition ( T v ) temperatures that are associated with...
Greigite (Fe3S4) is a widespread authigenic magnetic mineral in anoxic sediments and also commonly biosynthesized by magnetotactic bacteria aqueous environments. While the presence of fossilized bacterial magnetite (Fe3O4) has now been widely demonstrated, preservation greigite magnetofossils geological record only poorly constrained. Here we investigate Mio-Pliocene former Black Sea to test whether can detect unravel potential environmental controls on formation. Our analyses transmission...
Abstract Magnetic mineral inclusions occur commonly within other larger phases in igneous rocks and have been demonstrated to preserve important paleomagnetic signals. While the usefulness of magnetic has explored extensively, their presence sediments only speculated upon. The contribution magnetization sediments, therefore, elusive. In this study, we use transmission electron microscope (TEM) methods demonstrate widespread preservation silicate‐hosted marine sedimentary settings. TEM...
Abstract The central ridge structure of a first‐order reversal curve (FORC) distribution is indicative uniaxial noninteracting single domain magnetic particles, which provides the opportunity to identify and characterize biogenic mineral remains (magnetofossils) in sediments. Recent studies have shown that magnetofossils are widespread geological record they carry useful environmental information contribute paleomagnetic recording, makes it essential quantify how these components properties...
Scope Hepatic steatosis and insulin resistance (IR) are risk factors for many metabolic syndromes such as NAFLD T2DM. ApoA4 improves glucose hemostasis by increasing glucose‐stimulated secretion uptake via PI3K‐Akt activation in adipocytes. However, whether has an effect on hepatic or IR remains unclear. Methods results ApoA4‐knockout (KO) aggravates diet‐induced obesity, steatosis, mice promoted increased lipogenesis gene expression based RNA‐seq data. Conversely, liver‐specific...
Abstract Pelagic marine carbonates provide important records of past environmental change. We carried out detailed low‐temperature magnetic measurements on biogenic magnetite‐bearing sediments from the Southern Ocean (Ocean Drilling Program (ODP) Holes 738B, 738C, 689D, and 690C) samples containing whole magnetotactic bacteria cells. document a range properties, including reversible humped cycling (LTC) curves. Different degrees magnetite oxidation are considered to be responsible for...
Abstract The Holocene Warm Period (HWP) provides valuable insights into the climate system and biotic responses to environmental variability thus serves as an excellent analogue for future global changes. Here we document, first time, that warm wet HWP conditions were highly favourable magnetofossil proliferation in semi-arid Asian interior. pronounced increase of concentrations at ~9.8 ka decrease ~5.9 Dali Lake coincided respectively with onset termination are linked increased nutrient...
Abstract Biogenic magnetic minerals produced by magnetotactic bacteria occur ubiquitously in natural aquatic environments. Their identification and characterization are important for interpretation of paleomagnetic environmental records. We compare two methods their a diverse set sedimentary environments: ferromagnetic resonance (FMR) spectroscopy first‐order reversal curve (FORC) diagrams, constrained transmission electron microscope observations. The advantages limitations each method...
The domestication of wild goats and subsequent intensive trait-driven crossing, inbreeding, selection have led to dramatic phenotypic purification intermediate breeds for the high-quality production dairy, cashmere wool, meat. Genomic resequencing provides a powerful means direct identification trait-associated sequence variations that underlie molecular mechanisms domestication.Here, we report our effort define such based on data from domestic goat (Capra aegagrus hircus; five each)...