GLORIA

GEOMAR Library Ocean Research Information Access

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    facet.materialart.
    Unknown
    Regulation of CO 2 and N 2 O fluxes by coupled carbon and nitrogen availability (2015)
    Institute of Physics (IOP)
    Details
    Publication Date: 2015-03-06
    Description: Carbon (C) and nitrogen (N) interactions contribute to uncertainty in current biogeochemical models that aim to estimate greenhouse gas (GHG, including CO 2 and N 2 O) emissions from soil to atmosphere. In this study, we quantified CO 2 and N 2 O flux patterns and their relationship along with increasing C additions only, N additions only, a C gradient combined with excess N, and an N gradient with excess C via laboratory incubations. Conventional trends, where labile C or N addition results in higher CO 2 or N 2 O fluxes, were observed. However, at low levels of C availability, saturating N amendments reduced soil CO 2 flux while with high C availability N amendments enhanced it. At saturating C conditions increasing N amendments first reduced and then increased CO 2 fluxes. Similarly, N 2 O fluxes were initially reduced by adding labile C under N limited conditions, but additional C enhanced N...
    Print ISSN: 1748-9318
    Electronic ISSN: 1748-9326
    Topics: Biology , Energy, Environment Protection, Nuclear Power Engineering
    Published by Institute of Physics (IOP)
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 2
    facet.materialart.
    Unknown
    Establishment of digital river network control platform in Beijing-Tianjin-Hebei region based on integrated platform (2018)
    Institute of Physics (IOP)
    Details
    Publication Date: 2018-11-06
    Description: The Beijing-Tianjin-Hebei area is the political, economic, cultural, scientific and technological center of our country and an important engine for promoting the economic development. It is the region where human activity of our nation and rest of the world has the biggest intensity to the water cycle disturbance, the biggest in water resources pressure bearing, the greatest difficulty in water resources security guarantee. With the help of 3S visualization technology, knowledge map technology, spatial database technology, it relies on the integrated platform, and the connectivity of the entity water network in Beijing-Tianjin-Hebei area is visualized by information technology, and the digital river network control platform is established. It makes full use of static space to support data with the help of modern monitoring means, and the visualization of monitoring information such as water regime information and reservoir work condition information of Beijing-Tianjin-Hebei area...
    Print ISSN: 1755-1307
    Electronic ISSN: 1755-1315
    Topics: Geography , Geosciences , Physics
    Published by Institute of Physics (IOP)
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 3
    facet.materialart.
    Unknown
    Magnetic field gradient driven dynamics of isolated skyrmions and antiskyrmions in frustrated magnets (2018)
    Institute of Physics (IOP)
    Details
    Publication Date: 2018-05-16
    Description: The study of skyrmion/antiskyrmion motion in magnetic materials is very important in particular for the spintronics applications. In this work, we study the dynamics of isolated skyrmions and antiskyrmions in frustrated magnets driven by magnetic field gradient, using the Landau–Lifshitz–Gilbert simulations on the frustrated classical Heisenberg model on the triangular lattice. A Hall-like motion induced by the gradient is revealed in bulk system, similar to that in the well-studied chiral magnets. More interestingly, our work suggests that the lateral confinement in nanostripes of the frustrated system can completely suppress the Hall motion and significantly speed up the motion along the gradient direction. The simulated results are well explained by Thiele theory. It is demonstrated that the acceleration of the motion is mainly determined by the Gilbert damping constant, which provides useful information for finding potential materials for skyrmion-based spintronics.
    Electronic ISSN: 1367-2630
    Topics: Physics
    Published by Institute of Physics (IOP)
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 4
    facet.materialart.
    Unknown
    Synthesis and photocatalytic activity of sepiolite supportednano-TiO 2 composites prepared by a mild solid-state sintering process (2016)
    Institute of Physics (IOP)
    Details
    Publication Date: 2016-09-03
    Description: Supported nano-TiO 2 photocatalysts play an important role in water environment restoration because of their potential application to photocatalytic degradation of organic contaminants in waste water. With sepiolite as the support, the nano-TiO 2 /sepiolite composite photocatalysts were synthesized by an easily operated and mild solid-state sintering process.The microstructureand photocatalytic property of the sepiolite supportednano-TiO 2 composites were characterized and analyzed by X-ray diffraction spectroscopy, UV-Visible spectroscopy and fluorescence spectroscopy. In addition, the influences of calcination temperature and load ratios on the photocatalytic activity of sepiolite supported nano-TiO 2 composites were studied.The results indicated that appropriate ratios of sepiolite supports to nano-TiO 2 contributed to uniform dispersion of nanoparticles, and enhanced the absorption ability within the UV-Vis range, and consequent...
    Print ISSN: 1755-1307
    Electronic ISSN: 1755-1315
    Topics: Geography , Geosciences , Physics
    Published by Institute of Physics (IOP)
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 5
    facet.materialart.
    Unknown
    Using ASD data to identify the altered minerals for exploring of gold deposit in the Beishan area, North China (2016)
    Institute of Physics (IOP)
    Details
    Publication Date: 2016-11-22
    Description: Hyperspectral information of altered minerals plays an important role in the identifications of mineralized zones. In this study, the altered minerals of two gold deposits from Fangshankou-Laojinchang regions of Beishan metallogenic belt were measured by ASD field Spectrometer. Many gold deposits would have a close relationship with Variscan magma intrusion, which have been found in study region. The alteration minerals have been divided six types by the spectral results, i.e. sericite, limonite, dolomite, chlorite, epidote and calcite. The distribution characteristics and formations of altered minerals were discussed here. By the ASD, the spectral curve of different geological units in the Jintanzi and Fangshankou gold deposits were analysed and summarized. The results show that the sericite and limonite are mainly related with the gold mineralization and widely occurred in the gold deposits. Therefore, we proposed that the sericite and limonite are the iconic alteration minera...
    Print ISSN: 1755-1307
    Electronic ISSN: 1755-1315
    Topics: Geography , Geosciences , Physics
    Published by Institute of Physics (IOP)
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 6
    facet.materialart.
    Unknown
    Dynamics of distorted skyrmions in strained chiral magnets (2018)
    Institute of Physics (IOP)
    Details
    Publication Date: 2018-06-29
    Description: In this work, we study the microscopic dynamics of distorted skyrmions in strained chiral magnets (Shibatak et al 2015 Nat. Nanotechnol. 10 589) under gradient magnetic field and electric current by Landau–Lifshitz–Gilbert simulations of the anisotropic spin model. It is observed that the dynamical responses are also anisotropic, and the velocity of the distorted skyrmion is periodically dependent on the directions of the external stimuli. Furthermore, in addition to the uniform motion, our work also demonstrates an anti-phase harmonic vibration of the two skyrmions in nanostripes, and the frequencies can be effectively modulated by the anisotropic Dzyaloshinskii–Moriya interaction. The simulated results are well explained by Thiele’s theory, which may provide useful information in understanding the dynamics of the distorted skyrmions.
    Electronic ISSN: 1367-2630
    Topics: Physics
    Published by Institute of Physics (IOP)
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 7
    facet.materialart.
    Unknown
    Research on control method of pre-tightening load based on moment method and strain gauge method (2018)
    Institute of Physics (IOP)
    Details
    Publication Date: 2018-07-31
    Description: The most commonly used method to control the pre-tightening load of the bolt is torque measurement method and strain gauge method. The torque measurement method is convenient to use but usually leads to large control error, even up to ±25%. The strain gauge method is able to provide adequate control accuracy but is not convenient to use and costs are high. This study attempts to combine the advantages of the torque measurement method and the strain gauge method to form a kind of bolt pre-tightening force control method which is convenient for engineering application.
    Print ISSN: 1755-1307
    Electronic ISSN: 1755-1315
    Topics: Geography , Geosciences , Physics
    Published by Institute of Physics (IOP)
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...