Results 21 to 30 of about 112,424 (310)

Comparison among Four Deep Learning Image Classification Algorithms in AI-based Diatom Test

Fayixue Zazhi, 2022
ObjectiveTo select four algorithms with relatively balanced complexity and accuracy among deep learning image classification algorithms for automatic diatom recognition, and to explore the most suitable classification algorithm for diatom recognition to ...
ZHU Yong-zheng, ZHANG Ji, CHENG Qi, YU Hui-xiao, DENG Kai-fei, ZHANG Jian-hua, QIN Zhi-qiang, ZHAO Jian, SUN Jun-hong, HUANG Ping   +9 more
doaj   +1 more source

Influence of diatom diversity on the ocean biological carbon pump

Nature Geoscience, 2017
Diatoms sustain the marine food web and contribute to the export of carbon from the surface ocean to depth. They account for about 40% of marine primary productivity and particulate carbon exported to depth as part of the biological pump.
P. Tréguer, C. Bowler, Brivaëla Moriceau, S. Dutkiewicz, M. Gehlen, O. Aumont, L. Bittner, R. Dugdale, Z. Finkel, D. Iudicone, O. Jahn, L. Guidi, M. Lasbleiz, K. Leblanc, M. Lévy, P. Pondaven   +15 more
semanticscholar   +1 more source

Application of 18S rDNA Clone Library to Detect Diatom Population Diversity in Dianchi#br# [PDF]

Fayixue Zazhi, 2019
Objective To detect the diatom population diversity in Dianchi by constructing a 18S rDNA clone library. Methods DNA from diatoms in 6 water samples of Dianchi was amplified with diatom 18S rDNA specific primer.The 18S rDNA clone library was constructed,
HU Die, PI Zhi-yun, ZHANG Zhi-rong,et al
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Insights into global diatom distribution and diversity in the world’s ocean

Proceedings of the National Academy of Sciences of the United States of America, 2016
Significance Diatoms, considered one of the most diverse and ecologically important phytoplanktonic groups, contribute around 20% of global primary productivity.
S. Malviya, Eleonora Scalco, S. Audic, Flora Vincent, Alaguraj Veluchamy, J. Poulain, P. Wincker, D. Iudicone, C. de Vargas, L. Bittner, A. Zingone, C. Bowler   +11 more
semanticscholar   +1 more source

Heterotrophy in Diatoms [PDF]

Journal of General Microbiology, 1953
SUMMARY: Forty-two bacteria-free cultures of pennate diatoms from fresh water or soil were tested for ability to grow heterotrophically with glucose as the sole carbon source. Thirteen of these isolates proved capable of growth under these conditions.
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The Phaeodactylum genome reveals the evolutionary history of diatom genomes

Nature, 2008
Diatoms are photosynthetic secondary endosymbionts found throughout marine and freshwater environments, and are believed to be responsible for around one-fifth of the primary productivity on Earth.
C. Bowler, Andrew E. Allen, Andrew E. Allen, J. Badger, J. Grimwood, K. Jabbari, A. Kuo, U. Maheswari, Cindy Martens, F. Maumus, Robert Otillar, E. Rayko, A. Salamov, K. Vandepoele, B. Beszteri, Ansgar Gruber, M. Heijde, M. Katinka, T. Mock, K. Valentin, F. Verret, J. Berges, C. Brownlee, J. Cadoret, A. Chiovitti, Chang Jae Choi, Sacha Coesel, A. D. Martino, J. Detter, C. Durkin, A. Falciatore, J. Fournet, M. Haruta, M. Huysman, B. Jenkins, K. Jiroutová, Richard E. Jorgensen, Yolaine Joubert, A. Kaplan, N. Kröger, P. Kroth, E. Lindquist, Markus Lommer, V. Martin‐Jézéquel, P. Lopez, S. Lucas, M. Mangogna, K. McGinnis, L. Medlin, Anton Montsant, Anton Montsant, M. Secq, C. Napoli, M. Oborník, M. Parker, Jean‐Louis Petit, Betina M. Porcel, N. Poulsen, Matthew Robison, L. Rychlewski, T. Rynearson, J. Schmutz, J. Schmutz, H. Shapiro, M. Siaut, M. Stanley, M. Sussman, Alison R. Taylor, A. Vardi, P. Dassow, W. Vyverman, A. Willis, L. Wyrwicz, D. Rokhsar, J. Weissenbach, E. Armbrust, B. Green, Y. Peer, I. Grigoriev   +78 more
semanticscholar   +1 more source

The mysteries of the diatoms [PDF]

Current Biology, 2012
Understanding the physiology of these unique and spectacularly successful algal species could lead to substantial benefits in a wide range of areas from nanotechnology to climate change. Michael Gross reports.
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Evolutionary genomics of the cold-adapted diatom Fragilariopsis cylindrus

Nature, 2017
The Southern Ocean houses a diverse and productive community of organisms. Unicellular eukaryotic diatoms are the main primary producers in this environment, where photosynthesis is limited by low concentrations of dissolved iron and large seasonal ...
T. Mock, Robert Otillar, Jan Strauss, Jan Strauss, M. McMullan, Pirita Paajanen, Pirita Paajanen, J. Schmutz, A. Salamov, R. Sanges, Andrew Toseland, Ben J. Ward, Ben J. Ward, Andrew E. Allen, Andrew E. Allen, C. Dupont, S. Frickenhaus, F. Maumus, Alaguraj Veluchamy, Alaguraj Veluchamy, Taoyang Wu, Kerrie W. Barry, A. Falciatore, M. Ferrante, A. E. Fortunato, Gernot Glöckner, Gernot Glöckner, Ansgar Gruber, Rachel Hipkin, M. Janech, P. Kroth, F. Leese, E. Lindquist, B. R. Lyon, B. R. Lyon, Joel A. Martin, C. Mayer, M. Parker, H. Quesneville, J. Raymond, C. Uhlig, Ruben E. Valas, K. Valentin, A. Worden, E. Armbrust, M. Clark, M. Clark, C. Bowler, B. Green, V. Moulton, C. Oosterhout, I. Grigoriev, I. Grigoriev   +52 more
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Application of a Diatom Transfer Function to Quantitative Paleoclimatic Reconstruction — A Case Study of Yunlong Lake, Southwest China

Frontiers in Earth Science, 2021
Although diatom records from lake sediments have been used for quantitative paleoclimatic reconstruction, their validity and sensitivity have rarely been tested rigorously.
Yafei Zou, Luo Wang, Haibo He, Guangxin Liu, Jiaoyang Zhang, Yao Yan, Zhaoyan Gu, Hongbo Zheng, Hongbo Zheng   +8 more
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Copper in Diatoms [PDF]

Nature, 1947
WORK undertaken in this Laboratory suggests that certain species of diatoms, which are the normal constituents of the slime film which forms upon a submerged surface in marine waters, contain copper, far in excess of the amount usually considered lethal for unicellular Algae.
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