Results 21 to 30 of about 45,064 (208)

Water Window Ptychographic Imaging with Characterized Coherent X-rays [PDF]

, 2015
We report on a ptychographical coherent diffractive imaging experiment in the water window with focused soft X-rays at $500~\mathrm{eV}$. An X-ray beam with high degree of coherence was selected for ptychography at the P04 beamline of the PETRA III ...
Dzhigaev, Dmitry, Gorniak, Thomas, Gorobtsov, Oleg, Rose, Max, Rosenhahn, Axel, Senkbeil, Tobias, Shabalin, Anatoly, Skopintsev, Petr, Vartanyants, Ivan, Viefhaus, Jens, von Gundlach, Andreas   +10 more
core   +2 more sources

Diatom metabarcoding and microscopic analyses from sediment samples at Lake Nam Co, Tibet: The effect of sample-size and bioinformatics on the identified communities

Ecological Indicators, 2021
Diatoms (Bacillariophyceae) are characterized by silicified cell walls that favor their long-term preservation in sediments, therefore widely used as bioindicators of present and past water conditions.
Wengang Kang, Sten Anslan, Nicole Börner, Anja Schwarz, Robin Schmidt, Sven Künzel, Patrick Rioual, Paula Echeverría-Galindo, Miguel Vences, Junbo Wang, Antje Schwalb   +10 more
doaj   +1 more source

Sensitivity of freshwater periphytic diatoms to agricultural herbicides [PDF]

, 2009
The biomonitoring of pesticide pollution in streams and rivers using algae such as diatoms remains difficult. The responses of diatomcommunities to toxic stress in streamwater are disturbed by the variations of environmental parameters.
Coste, Michel, Debenest, Timothée, Delmas, François, Madigou, C., Mazzella, N., Pinelli, Eric, Silvestre, Jérôme   +6 more
core   +4 more sources

Disentangling diatom species complexes: does morphometry suffice? [PDF]

PeerJ, 2017
Accurate taxonomic resolution in light microscopy analyses of microalgae is essential to achieve high quality, comparable results in both floristic analyses and biomonitoring studies.
Saúl Blanco, María Borrego-Ramos, Adriana Olenici   +2 more
doaj   +2 more sources

Effects of Epibiotic Diatoms on the Productivity of the Calanoid Copepod Acartia tonsa (Dana) in Intensive Aquaculture Systems

Frontiers in Marine Science, 2021
We evaluated here the effects of the epibiotic diatom Tabularia sp. on the productivity of the calanoid copepod Acartia tonsa (Dana) for assessing their risk on copepod intensive aquaculture industry for the provision of live feed.
Yen-Ju Pan, Yen-Ju Pan, Wei-Lung Wang, Jiang-Shiou Hwang, Jiang-Shiou Hwang, Jiang-Shiou Hwang, Sami Souissi   +6 more
doaj   +1 more source

Diatom Biodiversity and Speciation Revealed by Comparative Analysis of Mitochondrial Genomes

Frontiers in Plant Science, 2022
Diatoms (Bacillariophyta) constitute one of the most diverse and ecologically significant groups of phytoplankton, comprising 100,000–200,000 species in three classes Bacillariophyceae, Mediophyceae, and Coscinodiscophyceae.
Yichao Wang, Yichao Wang, Yichao Wang, Yichao Wang, Shuya Liu, Shuya Liu, Shuya Liu, Jing Wang, Jing Wang, Jing Wang, Yanxin Yao, Yanxin Yao, Yanxin Yao, Yanxin Yao, Yang Chen, Yang Chen, Yang Chen, Yang Chen, Qing Xu, Qing Xu, Qing Xu, Qing Xu, Zengxia Zhao, Zengxia Zhao, Nansheng Chen, Nansheng Chen, Nansheng Chen, Nansheng Chen   +27 more
doaj   +1 more source

Evaluating Alternative Metacommunity Hypotheses for Diatoms in the McMurdo Dry Valleys Using Simulations and Remote Sensing Data

Frontiers in Ecology and Evolution, 2020
Diatoms are diverse and widespread freshwater Eukaryotes that make excellent microbial subjects for addressing questions in metacommunity ecology. In the McMurdo Dry Valleys of Antarctica, the simple trophic structure of glacier-fed streams provides an ...
Eric R. Sokol, Eric R. Sokol, J. E. Barrett, Tyler J. Kohler, Diane M. McKnight, Mark R. Salvatore, Lee F. Stanish   +6 more
doaj   +1 more source

Simonsenia aveniformis sp nov (Bacillariophyceae), molecular phylogeny and systematics of the genus, and a new type of canal raphe system [PDF]

, 2015
The genus Simonsenia is reviewed and S. aveniformis described as new for science by light and electron microscopy. The new species originated from estuarine environments in southern Iberia (Atlantic coast) and was isolated into culture. In LM, Simonsenia
A Gomes, A Stamatakis, A Witkowski, A Witkowski, B Imanian, D Pickett-Heaps, DG Mann, DG Mann, DG Mann, DG Mann, E Hehenberger, EA Morales, EC Ruck, EC Ruck, EJ Cox, EJ Cox, EJ Cox, F Rimet, H Lange-Bertalot, H Lange-Bertalot, H Lange-Bertalot, H Shimodaira, JD Pickett-Heaps, JH Belcher, JP Kociolek, K Bruder, L Guillou, M Ichinomiya, M Potapova, M Tamura, MP Ashworth, N Lundholm, PA Sims, PA Sims, PC Silva, R Simonsen, R Trobajo, R Trobajo, R Trobajo, T Watanabe, TBB Paddock, VI Mikhailov   +41 more
core   +1 more source

Community- and population-level changes in diatom size structure in a subarctic lake over the last two centuries [PDF]

PeerJ, 2015
Climate change over the last two centuries has been associated with significant shifts in diatom community structure in lakes from the high arctic to temperate latitudes.
Elizabeth A. Kerrigan, Andrew J. Irwin, Zoe V. Finkel   +2 more
doaj   +2 more sources

Effect of the anisotropy on the glory structure of molecule-molecule scattering cross sections [PDF]

, 2011
Total (elastic + rotationally inelastic) integral cross sections are computed for O$_2(^3\Sigma_g^-)$-O$_2(^3\Sigma_g^-)$ using a recent ab initio potential energy surface.
Aquilanti, Aquilanti, Bartolomei, Bartolomei, Bartolomei, Bernstein, Bernstein, Bernstein, Bernstein, Cappelletti, Cappelletti, Cappelletti, Cross, Eccles, Gislason, Goldflam, Gomez, Green, Greene, Heil, Helbing, Jesús Pérez-Ríos, José Campos-Martínez, Kouri, Landau, Levine, Manolopoulos, Marta I. Hernández, Massimiliano Bartolomei, McGuire, Miller, Miller, Olson, Pack, Pérez-Ríos, Pérez-Ríos, Pérez-Ríos, Roberts, Schiff, Takayanagi, Thibault, van der Avoird, Wagner   +42 more
core   +3 more sources