Results 51 to 60 of about 1,948,220 (393)

Evaluating the influence of lake morphology, trophic status and diagenesis on geochemical profiles in lake sediments [PDF]

, 2010
Recent geochemical studies provide evidence that changes in vertical distributions of nutrients in lake sediments are driven by anthropogenic activities, based primarily on trends of increasing concentrations in upper sediment layers.
Hamilton, David P., Pilditch, Conrad A., Trolle, Dennis   +2 more
core   +2 more sources

Substrate specificity of Burkholderia pseudomallei multidrug transporters is influenced by the hydrophilic patch in the substrate‐binding pocket

FEBS Letters, EarlyView.
Multidrug transporters BpeB and BpeF from the Gram‐negative pathogen Burkholderia pseudomallei have a hydrophilic patch in their substrate‐binding pocket. Drug susceptibility tests and growth curve analyses using an Escherichia coli recombinant expression system revealed that the hydrophilic patches of BpeB and BpeF are involved in the substrate ...
Ui Okada, Satoshi Murakami
wiley   +1 more source

Velocity structure tomography analysis in southern Hebei Province

地震科学进展
The destruction of cratons is one of the key research objects of geophysicists. According to China Earthquake Networks Center, small and medium-sized earthquakes have occurred more frequently in southern Hebei in recent years than before.
Shi Wang, Yi Zhou, Sisi Wang, Xiaolei Liu   +3 more
doaj   +1 more source

In Situ Aerobic Bioremediation of Sediments Polluted with Petroleum Hydrocarbons: A Critical Review

Journal of Marine Science and Engineering, 2021
Oil pollution has been a worldwide concern especially in environments where treatment is quite difficult to apply. Marine polluted sediments, in particular, constitute one of the most recalcitrant environments for bioremediation and are often the final ...
Efsevia Fragkou, Eleftheria Antoniou, Ioannis Daliakopoulos, Thrassyvoulos Manios, Marianna Theodorakopoulou, Nicolas Kalogerakis   +5 more
doaj   +1 more source

Mechanisms of parasite‐mediated disruption of brain vessels

FEBS Letters, EarlyView.
Parasites can affect the blood vessels of the brain, often causing serious neurological problems. This review explains how different parasites interact with and disrupt these vessels, what this means for brain health, and why these processes matter. Understanding these mechanisms may help us develop better ways to prevent or treat brain infections in ...
Leonor Loira, Sílvia Arroz‐Madeira, Cláudio A. Franco, Sara Silva Pereira   +3 more
wiley   +1 more source

Determination of the source location of the 2023 Jishishan M6.2 earthquake in Gansu Province

地震科学进展
Based on the P-phase arrival time, we determined the source location of the Jishishan M6.2 earthquake with simulated annealing (SA) method, and quantitatively evaluated the reliability of the results using sample set statistical analysis method.
Zhiyuan Zhao, Zhao Song, Kainan Chen, Zhongtao Liu   +3 more
doaj   +1 more source

Distribution, sources and influencing factors of organic carbon in the surface sediments of the coastal tidal flats in Jiangsu Province

Frontiers in Marine Science, 2023
Coastal tidal flats are situated in the interaction zone between the ocean and land and are vulnerable to natural changes, human activities, and global changes; these areas serve as an important mixing zone and burial area for carbon and nitrogen storage.
Rui Zhao, Xinrui Dong, Qing Liu, Min Xu, Yifei Zhao   +4 more
doaj   +1 more source

Bottom sediments of Lake Rotoma [PDF]

, 1983
Lake Rotoma is a deep (70-80 m), oligotrophic, warm monomictic lake of volcanic origin with insignificant stream inflow and no clearly defined outflow. For at least 60 years up to 1972 the lake level fluctuated markedly about an overall rising trend of ...
_____, _____, _____, _____, _____, _____, Anonymous, Brown J. M. A., Cassie Vivienne, Chapman V. J., Clayton J. S., Cole J. W., Davis R. B., Emery K. O., Ewart A., Fish G. R., Flint E. A., Folk R. L., Folk R. L., Gee F., Glasby G. P., Grange L. T., Healy J., Healy J., Howard R. K., Howorth R., Irwin J., Jolly V. H., Jolly V. H., Jordan C. F., Kamp P. J. J., Kirkman J. H., Kohn B. P., Lawless J. V., Lister G. S., Main W. de L., McColl R. H. S., McManus D. A., Mitsui K., Passega R., Phillips C. J., Pickrill R. A., Stumm W., Swift D. J. P., Visher G. S., Vucetich C. G., White E.   +46 more
core   +2 more sources

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

FEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka, Yuxi Liu, Stefano Maggi, Debnath Ghosal, Jue Wang, Prashant P. Damke, Stephen D. Carter, Wei Zhao, Sukhithasri Vijayrajratnam, Joseph P. Vogel, Carrie L. Shaffer, Grant J. Jensen   +11 more
wiley   +1 more source

Analysis on intelligent upgrading and transformation of seismic stations in Hebei Province

地震科学进展
With the increasing number of earthquake stations and scaling up of unmanned stations, the traditional operation and maintenance mode of stations is facing various challenges such as frequent power supply, communication, and instrument failures.
Qin Tian, Kainan Chen, Pengjie Zhang
doaj   +1 more source