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  • 1
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    Temperature reconstructations of sediment core SO139-74KL off southern Sumatra (2018)
    PANGAEA
    In:  Supplement to: Wang, Xingxing; Jian, Zhimin; Lückge, Andreas; Wang, Yue; Dang, Haowen; Mohtadi, Mahyar (2018): Precession-paced thermocline water temperature changes in response to upwelling conditions off southern Sumatra over the past 300,000 years. Quaternary Science Reviews, 192, 123-134, https://doi.org/10.1016/j.quascirev.2018.05.035
    Details
    Publication Date: 2023-06-27
    Description: Sea surface temperature and thermocline water temperature variabilities over the past 300 kyr are reconstructed by using foraminiferal Mg/Ca-paleothermometry in sediment core SO139-74 KL off southern Sumatra (632.60S, 103500E; 1690m water depth). Whereas SST shows a clear glacialinterglacial cycle, TWT displays a predominant cycle at the precession band. Generally, the TWT record varies with total organic carbon content, revealing that similar to today, TWT and upwelling intensity off southern Sumatra vary in concert during the past 300 kyr. The lack of glacial-interglacial variability in the TWT suggests a limited role of glacial boundary conditions, such as changing sea level and ice volume, on the upwelling intensity in this region. The vertical gradients of upper water δ18O and temperature at this site also reveal precessional cyclicity. Our model simulation of air-sea interaction further supports the low TWTs during periods of enhanced upwelling and precession minimum.
    Keywords: AGE; DEPTH, sediment/rock; GINCO 3; Globigerinoides ruber, Magnesium/Calcium ratio; Indonesia; KL; Piston corer (BGR type); Pulleniatina obliquiloculata, Magnesium/Calcium ratio; Pulleniatina obliquiloculata, δ18O; Sea surface temperature; SO139; SO139-74KL; Sonne; Thermocline water temperature
    Type: Dataset
    Format: text/tab-separated-values, 1548 data points
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    DATA PANGAEA
  • 2
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    Warm pool ocean heat content regulates ocean–continent moisture transport (2022)
    Nature Research
    Details
    Publication Date: 2022-11-14
    Description: The Indo-Pacific Warm Pool (IPWP) exerts a dominant role in global climate by releasing huge amounts of water vapour and latent heat to the atmosphere and modulating upper ocean heat content (OHC), which has been implicated in modern climate change1. The long-term variations of IPWP OHC and their effect on monsoonal hydroclimate are, however, not fully explored. Here, by combining geochemical proxies and transient climate simulations, we show that changes of IPWP upper (0–200 m) OHC over the past 360,000 years exhibit dominant precession and weaker obliquity cycles and follow changes in meridional insolation gradients, and that only 30%–40% of the deglacial increases are related to changes in ice volume. On the precessional band, higher upper OHC correlates with oxygen isotope enrichments in IPWP surface water and concomitant depletion in East Asian precipitation as recorded in Chinese speleothems. Using an isotope-enabled air–sea coupled model, we suggest that on precessional timescales, variations in IPWP upper OHC, more than surface temperature, act to amplify the ocean–continent hydrological cycle via the convergence of moisture and latent heat. From an energetic viewpoint, the coupling of upper OHC and monsoon variations, both coordinated by insolation changes on orbital timescales, is critical for regulating the global hydroclimate.
    Type: Article , PeerReviewed
    Format: text
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 3
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    Formyl peptide receptors promotes neural differentiation in mouse neural stem cells by ROS generation and regulation of PI3K-AKT signaling (2017)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2017-03-17
    Description: Formyl peptide receptors promotes neural differentiation in mouse neural stem cells by ROS generation and regulation of PI3K-AKT signaling Scientific Reports, Published online: 16 March 2017; doi:10.1038/s41598-017-00314-5
    Electronic ISSN: 2045-2322
    Topics: Natural Sciences in General
    Published by Nature Publishing Group (NPG)
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  • 4
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    Effects of soil C:N:P stoichiometry on biomass allocation in the alpine and arid steppe systems (2017)
    Wiley-Blackwell
    Details
    Publication Date: 2017-02-02
    Description: Soil nutrients strongly influence biomass allocation. However, few studies have examined patterns induced by soil C:N:P stoichiometry in alpine and arid ecosystems. Samples were collected from 44 sites with similar elevation along the 220-km transect at spatial intervals of 5 km along the northern Tibetan Plateau. Aboveground biomass (AGB) levels were measured by cutting a sward in each plot. Belowground biomass (BGB) levels were collected from soil pits in a block of 1 m × 1 m in actual root depth. We observed significant decreases in AGB and BGB levels but increases in the BGB:AGB ratio with increases in latitude. Although soil is characterized by structural complexity and spatial heterogeneity, we observed remarkably consistent C:N:P ratios within the cryic aridisols. We observed significant nonlinear relationships between the soil N:P and BGB:AGB ratios. The critical N:P ratio in soils was measured at approximately 2.0, above which the probability of BGB:AGB response to nutrient availability is small. These findings serve as interesting contributions to the global data pool on arid plant stoichiometry, given the previously limited knowledge regarding high-altitude regions. We declared the stoichiometry characteristics of high-altitude grassland. The critical N:P ratio had significant effects on biomass allocation of alpine steppe. We provided an interesting contribution to global data pool on stoichiometry.
    Electronic ISSN: 2045-7758
    Topics: Biology
    Published by Wiley-Blackwell
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  • 5
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    IJGI, Vol. 7, Pages 60: Holo3DGIS: Leveraging Microsoft HoloLens in 3D Geographic Information (2018)
    MDPI Publishing
    Details
    Publication Date: 2018-02-10
    Description: IJGI, Vol. 7, Pages 60: Holo3DGIS: Leveraging Microsoft HoloLens in 3D Geographic Information ISPRS International Journal of Geo-Information doi: 10.3390/ijgi7020060 Authors: Wei Wang Xingxing Wu Guanchen Chen Zeqiang Chen Three-dimensional geographic information systems (3D GIS) attempt to understand and express the real world from the perspective of 3D space. Currently, 3D GIS perspective carriers are mainly 2D and not 3D, which influences how 3D information is expressed and further affects the user cognition and understanding of 3D information. Using mixed reality as a carrier of 3D GIS is promising and may overcome problems when using 2D perspective carriers in 3D GIS. The objective of this paper is to propose an architecture and method to leverage the Microsoft HoloLens in 3D geographic information (Holo3DGIS). The architecture is designed according to three processes for developing holographic 3D GIS; the three processes are the creation of a 3D asset, the development of a Holo3DGIS application, and the compiler deployment of the Holo3DGIS application. Basic geographic data of Philadelphia were used to test the proposed methods and Holo3DGIS. The experimental results showed that the Holo3DGIS can leverage 3D geographic information with the Microsoft HoloLens. By changing the traditional 3D geographic information carrier from a 2D computer screen perspective to mixed reality glasses using the HoloLens 3D holographic perspective, it changed the traditional vision, body sense, and interaction modes, which enables GIS users to experience real 3D GIS.
    Electronic ISSN: 2220-9964
    Topics: Architecture, Civil Engineering, Surveying , Geosciences
    Published by MDPI Publishing on behalf of International Society for Photogrammetry and Remote Sensing (ISPRS).
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  • 6
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    β2 spectrin-mediated differentiation repressed the properties of liver cancer stem cells through β-catenin (2018)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2018-03-20
    Description: β2 spectrin-mediated differentiation repressed the properties of liver cancer stem cells through β-catenin β2 spectrin-mediated differentiation repressed the properties of liver cancer stem cells through β-catenin, Published online: 19 March 2018; doi:10.1038/s41419-018-0456-6 β2 spectrin-mediated differentiation repressed the properties of liver cancer stem cells through β-catenin
    Electronic ISSN: 2041-4889
    Topics: Biology , Medicine
    Published by Nature Publishing Group (NPG)
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  • 7
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    Effects of catalysts on combustion characteristics and kinetics of coal-char blends (2018)
    Institute of Physics (IOP)
    Details
    Publication Date: 2018-04-11
    Description: The effects of Fe 2 O 3 , CaO, and MnO 2 on the combustion characteristics and kinetics of coal-char blends were investigated using thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The results indicated that catalysts exhibited positive effects on the combustion characteristics of coal-char blends, especially in the initial period of coal-char blends combustion. With catalysts addition (mass 1.5%), it could improves volatile matter release, and reduces ignition point, promotes char to begin burning under lower temperature. The ignition index (C) was increased, respectively, by 27% for Fe 2 O 3 , 6% for CaO, 11.3% for MnO 2 , and the combustion characteristic index ( S ) was increased respectively, by 29% for Fe 2 O 3 , 5% for CaO, 8.3% for MnO 2 . In addition, two kinetic models (R 2 and F 1 ) were adopted to calculate the kinetic parame...
    Print ISSN: 1755-1307
    Electronic ISSN: 1755-1315
    Topics: Geography , Geosciences , Physics
    Published by Institute of Physics (IOP)
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  • 8
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    [ASAP] Controlled Growth of Unidirectionally Aligned Hexagonal Boron Nitride Domains on Single Crystal Ni (111)/MgO Thin Films (2018)
    American Chemical Society (ACS)
    Details
    Publication Date: 2018-12-21
    Description: Crystal Growth & Design DOI: 10.1021/acs.cgd.8b01542
    Print ISSN: 1528-7483
    Electronic ISSN: 1528-7505
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Published by American Chemical Society (ACS)
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  • 9
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    Spatiotemporal expression of EAPP modulates neuronal apoptosis and reactive astrogliosis after spinal cord injury (2015)
    Wiley-Blackwell
    Details
    Publication Date: 2015-02-22
    Description: E2F-associated phosphoprotein (EAPP) is a novel E2F binding protein that interacts with the activating members of the E2F transcription factors family and involved in various biological processes.However, the expression and function of EAPP in central nervous system (CNS) are still unknown. In this study, we performed an acute spinal cord injury (SCI) model in adult rats, we found that EAPP protein levels were significantly increased and reached a peak at day 3, and then gradually returned to normal level at day 14 after spinal cord injury and we observed that the expression of EAPP is enhanced in the gray and white matter. Spatially, increased levels of EAPP were striking in neurons and astrocytes. Moreover, colocalization of EAPP/active caspase-3 was detected in neurons, and colocalization of EAPP/proliferating cell nuclear antigen (PCNA) was detected in astrocytes after spinal cord injury. These results indicated that EAPP might play an important role in neuronal apoptosis and reactive astrogliosis. Furthermore In vitro, EAPP depletion by siRNA inhibited astrocyte proliferation, migration and CDK4/cyclinD1 expression. Meanwhile, EAPP knockdown also reduce neuronal apoptosis and cell cycle related proteins. Which indicated that EAPP might integrate cell cycle progression and play a crucial role in cell proliferation and apoptosis. Taken together, we speculated that EAPP was involved in biochemical and physiological responses after SCI. This article is protected by copyright. All rights reserved
    Electronic ISSN: 0091-7419
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Published by Wiley-Blackwell
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  • 10
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    Improvement in the Water Tolerance of SiO2-Modified Semicoke Catalysts for the Low-Temperature NO + CO Reaction (2017)
    American Chemical Society (ACS)
    Details
    Publication Date: 2017-06-23
    Description: Energy & Fuels DOI: 10.1021/acs.energyfuels.7b00750
    Print ISSN: 0887-0624
    Electronic ISSN: 1520-5029
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering , Process Engineering, Biotechnology, Nutrition Technology
    Published by American Chemical Society (ACS)
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