A5034645758- Microbial Community Ecology and Physiology
- Methane Hydrates and Related Phenomena
- Microplastics and Plastic Pollution
- Paleontology and Stratigraphy of Fossils
- Hydrocarbon exploration and reservoir analysis
- Geology and Paleoclimatology Research
- Geochemistry and Elemental Analysis
- Geochemistry and Geologic Mapping
- Image and Signal Denoising Methods
- Toxic Organic Pollutants Impact
- Digital Filter Design and Implementation
- Advanced Adaptive Filtering Techniques
- Embedded Systems Design Techniques
- Genomics and Phylogenetic Studies
- Radioactive element chemistry and processing
- Marine Biology and Ecology Research
- Geological and Geochemical Analysis
- Protist diversity and phylogeny
- Fractional Differential Equations Solutions
- VLSI and FPGA Design Techniques
- Plant and animal studies
- Origins and Evolution of Life
- Astro and Planetary Science
- Rock Mechanics and Modeling
- Low-power high-performance VLSI design
Institute of Deep-Sea Science and Engineering
2016-2025
Chinese Academy of Sciences
2017-2025
Vikram Sarabhai Space Centre
1985-2021
Centro Universitário Newton Paiva
2019
Universidade do Vale do Rio dos Sinos
2019
Baidu (China)
2019
Petronas (Malaysia)
2019
Indian Institute of Technology Bombay
2019
Tarim University
2019
Tongji University
2013-2015
Millions of metric tons plastics are produced annually and transported from land to the oceans.Finding fate plastic debris will help define impacts pollution in ocean.Here, we report abundances microplastic deepest part world's ocean.We found that hadal bottom waters range 2.06 13.51 pieces per litre, several times higher than those open ocean subsurface water.Moreover, sediments Mariana Trench vary 200 2200 distinctly most deep sea sediments.These results suggest manmade have contaminated...
Marine sediments have been considered to be a major sink for microplastics, yet the pollution history of microplastics recorded in these remains poorly understood.Using combination 210 Pb chronology and quantification undisturbed sediment cores, here we established forty-year northern South China Sea (SCS), largest marginal sea western Pacific.We found that SCS commenced 1980s.A dramatic increase microplastic abundance about 1998 marked an important breakpoint contamination.Since then,...
The ecotoxicity of large plastics resulting from adsorbed chemicals is largely unexplored. In this study, through an ecotoxicological simulation, we demonstrate how act as vectors micro-organic pollutants by them. Green mussels Perna viridis were exposed to low-density polypropylene (LDPE) and LDPE treated with highly toxic carcinogenic PAH benzo[a]pyrene (BaP) in multiple tanks over a period 21 days. Mussel tissues, gills, intestines harvested on day 0, 7, 14, measure BaP levels total...
Persistent organic pollutants (PCBs and PBDEs) were analysed in sediment core samples (0-2 cm) from the southern Mariana Trench at water depths of 7000-11000 m. ∑PCBs concentrations ranged 931 to 4195 pg/g, far higher than those recorded before marine sediments shallower depths.Toxic Equivalence (TEQ) dl-PCBs 0.650 -14.9 which is most surficial <500-2500 m ocean depth, recovered semi-industrial industrial areas.However, ∑ 8 PBDEs values (averaging ~136 pg/g) lower shelf areas past...
Abstract Pressure is an important thermodynamic property of the ocean and deep biosphere that affects microbial physiology biochemistry. Here, we report on our investigation response Gram‐positive piezotolerant bacterium Sporosarcina sp. DSK25 to hydrostatic pressure. Strain responded in adaptive manner upshifts growth pressure showed systematic changes phospholipid fatty acids. As increased from 0.1 10 MPa (Megapascal), unsaturated acids 21.7 31.1 % total acids, while level iso ‐ anteiso...
In this paper, we propose a model-free approach for short term voltage stability monitoring of power system. Our data-driven makes use Phasor Measurement Units (PMU) data to generate the certificate verifying stability. We employ Lyapunov exponent, tool adapted from ergodic theory dynamical system, certificate. The time-series PMU is used online computation exponent. proposed method can not only be determine entire system but also stability/instability contribution individual buses overall...
Geochemical modeling is used to understand water-rock interactions that occur in the sedimentary basin. Activities of aqueous species are usually calculated using Davies equation, Debye-Hückel B-Dot or Newton-Raphson. We perform a comparative study geochemical speciation three different software: PHREEQCTM, Geochemist's WorkbenchTM (GWB) and GEODELING (own code). Details each software carefully analyzed, taking into account distribution, mobility, availability chemical geological...
Abstract Volcanic ash is a major component of marine sediment, but its effect on the deep-sea carbon cycle remains enigmatic. Here, we analyzed mineralogical compositions and glycerol dialkyl tetraether (GDGT) membrane lipids in submarine tuffs from Mariana Trough, demonstrating fraction organic associated with volcanic produced situ. This likely derives chemolithotrophic communities supported by alteration material. Tuff GDGTs are characterized enrichment branched GDGTs, as communities....
In this paper, we study the problem of stabilization nonlinear system in Lure form with uncertainty at input and output channels. The channel is modeled using Bernoulli random variable. Generalization Positive Real Lemma for stochastic systems are derived to prove main result paper providing sufficient condition mean square exponential stability closed loop erasure channels output. We generalize provide over general uncertain perfect measurement results synthesis method design controller...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 508:67-85 (2014) - DOI: https://doi.org/10.3354/meps10841 Microbial distribution in different spatial positions within walls of a black sulfide hydrothermal chimney Jiangtao Li1, Huaiyang Zhou1,*, Jiasong Fang1,2,*, Yannan Sun1, Shamik Dasgupta1 1State Key Laboratory Geology, Tongji University, Shanghai...
Hadal trenches have higher microbial carbon turnover rates as compared to adjacent abyssal plains. However, the source of organic in trench remains enigmatic. In this study, we show that a fraction is possibly derived situ and correlated with chemoautotrophic communities supported by fluid discharge water-rock interaction wall, based on analysis glycerol dialkyl tetraether (GDGT) membrane lipids, including archaeal isoprenoid GDGTs (IsoGDGTs) bacterial branched (BrGDGTs), sediments rocks...
Article Free Access Share on Chip hierarchical design system (CHDS): a foundation for timing-driven physical into the 21st century Authors: R. G. Bushroe SEMATECH, 2706 Montopolis Drive, Austin, Texas TexasView Profile , S. DasGupta IBM Corporation, 11400 Burnett Road, A. Dengi Motorola Inc., 3501 Ed Bluestein Blvd., P. Fisher MontopolIs Grout Ledenbach N. Nagaraj Steele Authors Info & Claims ISPD '97: Proceedings of 1997 international symposium Physical designApril Pages...
The known deep subsurface biosphere on Earth persists in diversified habitats, including within igneous rocks of the oceanic crust.Here, we extend range to metamorphic ocean crust a subduction zone.We report fossilised life zeolite facies rocks, which formed by low grade metamorphism, from southern Mariana trench.Dense carbonaceous spheroids, filaments, and Frutexites-like structures are preserved these enriched organic carbon but depleted 13 C.The distinct difference GDGT-0 vs. crenarchaeol...