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6,175 results for “Composition”
Figure 1 in Composition and distribution patterns of chewing lice of two neotropical species of Turdus
Figure 1. Infrapopulation size of all species of chewing lice and their corresponding distribution on Turdus amaurochalinus (n = 36) and Turdus rufiventris (n = 53), in three areas of Atlantic Forest, in southern Brazil, between July 2009 and June 2010.
Figure 3 in Composition and distribution patterns of chewing lice of two neotropical species of Turdus
Figure 3. Infrapopulation size of Brueelia persimilis on Turdus amaurochalinus (n = 36) and Brueelia addoloratoi on Turdus rufiventris (n = 53), in three areas of Atlantic Forest, in southern Brazil, between July 2009 and June 2010.
Figure 1 in Comparison of the species composition of Gamasina mite communities (Acari: Mesostigmata) in selected caves of the Kraków-Cz stochowa Upland (southern Poland) and their immediate surroundings
Figure 1. Comparison of the species composition of Gamasina mite communities at the sampling sites based on Bray–Curtis distance (for abbreviations see Table 1).
Dataset_2020_Biogeosciences_Protists and collembolans alter microbial community composition, C dynamics and soil aggregation in simplified consumer - prey systems
<p>Dataset associated to the publication: Erktan, A., Rillig, M.C., Carminati, A., Jousset, A., Scheu, S. (2020) Protists and collembolans alter microbial community composition, C dynamics and soil aggregation in simplified consumer - prey systems, Biogeosciences, accepted the 27/08/2020.</p>
Supplementary material 1 from: Snyder MR, Stepien CA (2020) Increasing confidence for discerning species and population compositions from metabarcoding assays of environmental samples: case studies of fishes in the Laurentian Great Lakes and Wabash River. Metabarcoding and Metagenomics 4: e53455. https://doi.org/10.3897/mbmg.4.53455
Supplementary material: Additional methods, results, figures, and tables
Laccase/TEMPO-mediated graft hydrophobization of jute fibres to enhance the mechanical properties of jute/PLA composites
<p><span><span>In this work, the hydrophobization of lignocellulosic jute fibres was achieved via the laccase/TEMPO-mediated grafting of octadecylamine (OA) on their surface, with the aim to improve the interfacial compatibility with nonpolar polylactic (PLA) resins in fibre-reinforced composites. The modified jute fibres were analyzed by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy-energy dispersive spectroscopy (SEM-EDS). The characteristic vibrations of methylene groups and the increase in the surface C/O ratio of the jute fibres after the enzymatic treatment indicated that OA molecules were successfully grafted onto the jute fibre surface mediated by the laccase/TEMPO system. It was shown that the grafted jute fibres had increased surface hydrophobicity and reduced polarity with water contact angle of 124.2°, diiodomethane contact angle of 94.1° and surface free energy of 11.44 mJ/m<sup>2</sup>, which were attributed to the presence of the OA nonpolar alkyl chains on their surface. The tensile, bending, and dynamic mechanical properties of the hydrophobized jute/PLA composites were enhanced, which suggested stronger interfacial adhesion between the jute fibres and the PLA matrix. The mechanical stability was investigated by water immersion measurements and it was found that the modified jute/PLA composites were better in this regards than the control jute/PLA composites. Therefore, this enzymatic hydrophobic modification could be used as an effective and eco-friendly method to produce natural lignocellulosic fibre-reinforced composites with excellent performance.</span></span></p>
Automated X-ray computer tomography segmentation method for finite element analysis of non-crimp fabrics reinforced composites
<p>Data behind the publications:</p> <p>Auenhammer, R.M., Mikkelsen, L.P., Asp, L., Blinzler, B. Automated X-ray computer tomography segmentation method for finite element analysis of non-crimp fabric reinforced composites. <em>Composite Structures, </em><strong>256</strong>, 113136, <a href="https://doi.org/10.1016/j.compstruct.2020.113136">https://doi.org/10.1016/j.compstruct.2020.113136</a>, 2021.</p> <p>Auenhammer, Robert M., Lars P. Mikkelsen, Leif E. Asp, Brina J. Blinzler, Dataset of non-crimp fabric reinforced composites for an X-ray computer tomography aided engineering process, <em>Data in Brief, </em><strong>33</strong>, 106518, <a href="https://doi.org/10.1016/j.dib.2020.106518">https://doi.org/10.1016/j.dib.2020.106518</a>, 2020.</p> <p>Auenhammer, R.M., L.P. Mikkelsen, L.E. Asp, B.J. Blinzler, X-ray tomography based numerical analysis of stress concentrations in non-crimp fabric reinforced composites - assessment of segmentation methods. <em>IOP Conf. Ser.: Mater. Sci. Eng.</em> <strong>942</strong>, 012038, <a href="https://doi.org/10.1088/1757-899X/942/1/012038">https://doi.org/10.1088/1757-899X/942/1/012038</a>, 2020</p> <p>The data-set contain data from three samples: A, E and G. </p> <p>For each sample the data are saved in the follow format</p> <ul> <li>X-ray scan: nii-files</li> <li>SEM scan: tif-files</li> <li>Abaqus files: inp-files </li> <li>X-ray setting: pdf-files</li> <li>SEM settings: hdr-ascii files</li> </ul> <p> </p>
Supplementary material 2 from: Huang J, Guo Z, Tang S, Ren W, Chu G, Wang L, Zhao L, Yu R, Xu Y, Ding Y, Zang R (2020) Floristic composition and plant diversity in distribution areas of native species congeneric with Betula halophila in Xinjiang, northwest China. Nature Conservation 42: 1-17. https://doi.org/10.3897/natureconservation.42.54735
Figure S2. The distribution frequency of Betula species varies with the environment gradients
Ionic and water stable isotope composition of different Mendoza River basin (Argentina) water sources
<p>Samples obtained in a high temporal resolution from different water sources of the upper Mendoza River basin (Argentinean Central Andes). Ionic and water stable isotopes compositions are expressed and electric conductivity, pH and mean catchments altitudes. Decimal positions are expressed with comma.</p>
Relatedness and the composition of communities over time: evaluating phylogenetic community structure in the late Cenozoic record of bivalves
Understanding the mechanisms that prevent or promote the coexistence of taxa at local scales is critical to understanding how biodiversity is maintained. Competitive exclusion and environmental filtering are two processes thought to limit which taxa become established in a community. However, determining the relative importance of the two processes is a complex task, especially when the critical initial stages of colonization cannot be directly observed. Here, we explore the use of phylogenetic community structure for identifying filtering mechanisms in a fossil community. We integrated a time-calibrated molecular phylogeny of bivalve genera with a spatial dataset of late Cenozoic bivalves from the Pacific coast of North America to characterize how the community that was present in the semi-restricted San Joaquin Basin (SJB) embayment of present-day California was phylogenetically structured. We employed phylogenetic distance-based metrics across six time bins spanning 27-2.5 Ma and found no evidence of significant clustering or evenness in the SJB community when compared to communities randomly assembled from the regional source pool. Additionally, we found that new colonizers into the SJB were not significantly more or less closely related to native taxa than expected by chance. These findings suggest that neither competitive exclusion nor environmental filtering were overwhelmingly influential factors shaping the composition of the SJB community over time. We further discuss interpretations of these patterns in light of current understandings in community phylogenetics and reiterate the critical role historical perspectives play in how community assembly rules are assessed.
The Effects of Glacial Cover on Riverine Silicon Isotope Compositions in Chilean Patagonia
<p>Size-fractionated Si isotope compositions from 40 rivers in Chilean Patagonia and accompanying geospatial analysis.</p>
Data from: Manipulating plant community composition to steer efficient N-cycling in intensively managed grasslands
<p>1. Minimizing nitrogen (N) losses and increasing plant N uptake in agroecosystems is a major global challenge. Ecological concepts from (semi)natural grasslands suggest that manipulating plant community composition using plants species with different traits may represent a promising opportunity to face this challenge. Here we translate these trait-based concepts to agricultural systems in a field experiment, aiming to reveal the main determinants of how plant community composition regulates N-cycling in intensively managed grasslands.</p> <p>2. We focused on key N pools (plant N from soil and from biological N-fixation, soil mineral N, and N<sub>2</sub>O emissions) as well as on biological drivers of N-cycling in soil (abundance of N-cycling microbial communities, earthworm populations, and arbuscular mycorrhizal fungi), using three common grass and one legume species in monoculture, 2- and 4-species mixtures. We hypothesized that: (1) plant species mixtures increase plant N uptake, reduce soil mineral N concentrations and N<sub>2</sub>O emissions, and promote the abundance of biological N-cyclers; (2) legume presence stimulates N pools, fluxes, and biological N-cycling activity, (3) but in combination with a grass with acquisitive traits, more N is retained in the plant community, while N<sub>2</sub>O emissions are reduced.</p> <p>3. We found that mixtures increased plant N and lowered the soil mineral N pool compared to monocultures. However, plant species identity played an overarching role: legume presence increased N<sub>2</sub>O emissions, plant N pools, soil mineral N, and the abundance of N-cycling microbes and earthworms. Combining the legume with a grass with low leaf dry matter content and high root length density (and with high root biomass) reduced the higher soil mineral N and N<sub>2</sub>O emissions induced by the legume, while harnessing positive effects on plant N pools and biological N-fixation.</p> <p>4. Synthesis and applications. Our results unfold the potential of plant community composition to steer N-cycling in fertilized agroecosystems, paving the way for a more biologically-based <a>agriculture</a>. Legumes will play a crucial role, but selecting an optimum companion species is key for the sustainability of the agroecosystem.</p>
Characteristics of wintertime VOCs in urban Beijing: composition and source apportionment
<p>Ambient measurement campaign took place during winter 2017 in Beijing, China. The sources of volatile organic compounds were disclosed measured by proton-transfer-reaction time-of-flight mass spectrometers (PTR-ToF-MS). Ten VOC families showed clear dependence on the VOC concentration. The application of the novel positive matrix factorization receptor model enables the identification of anthropogenic and OVOC sources. Besides, a detailed comparison of VOC and OA source composition provided new proofs on SOA formation.</p>
VR-Together pilot 3: Video Composition (scene 2)
<p>VR-Together Pilot 3 video composition: scene 2.</p> <p>Video composition of the second scene of the <a href="https://vrtogether.eu/about-vr-together/pilots/pilot3/">Pilot 3 of the VR-Together project</a>.</p> <ul> <li>Dimensions: 3840x2160</li> <li>Codec: Timecode, Linear PCM, H.264</li> <li>Duration: 01:52</li> <li>Audio: Stereo</li> </ul> <p>VR-Together has been funded by the European Commission as part of the H2020 program, under the grant agreement 762111.</p>
Figure 1 from: Silva JL, Silva RJ, Fernandes IM, Sousa WO, Vaz-de-Mello FZ (2020) Species composition and community structure of dung beetles (Coleoptera: Scarabaeidae: Scarabaeinae) compared among savanna and forest formations in the southwestern Brazilian Cerrado. Zoologia 37: 1-12. https://doi.org/10.3897/zoologia.37.e58960
Figure 1 Map indicating the location of the study area within the Serra Azul State Park (SASP) in the state of Mato Grosso, Brazil. The detail illustrates the spatial organization of the plots following the RAPELD protocol. Plots 1, 7, 8, and 9 – Typical savanna, Plots 2, 4, 5, and 10 – Open savanna, Plot 3 – Gallery forest, Plot 6 – Deciduous forest.
Figure 2 from: Silva JL, Silva RJ, Fernandes IM, Sousa WO, Vaz-de-Mello FZ (2020) Species composition and community structure of dung beetles (Coleoptera: Scarabaeidae: Scarabaeinae) compared among savanna and forest formations in the southwestern Brazilian Cerrado. Zoologia 37: 1-12. https://doi.org/10.3897/zoologia.37.e58960
Figure 2 Sample-size-based rarefaction and extrapolation sampling curves (q = 0) of dung beetles collected with pitfall traps in the Serra Azul State Park (SASP), state of Mato Grosso, Brazil. The numbers in parentheses are the sample size and the observed Hill numbers for each reference sample. Shaded areas represent 95% confidence intervals.
Figure 5 from: Silva JL, Silva RJ, Fernandes IM, Sousa WO, Vaz-de-Mello FZ (2020) Species composition and community structure of dung beetles (Coleoptera: Scarabaeidae: Scarabaeinae) compared among savanna and forest formations in the southwestern Brazilian Cerrado. Zoologia 37: 1-12. https://doi.org/10.3897/zoologia.37.e58960
Figure 5 Mantel correlogram between dung beetle community and pairwise distance of plots in the four plant formations of the Serra Azul State Park (SASP), state of Mato Grosso, Brazil. Positive significant values indicate a positive autocorrelation, while significant negative values have the opposite interpretation. Significant values are represented by red circle.
Figure 4 from: Silva JL, Silva RJ, Fernandes IM, Sousa WO, Vaz-de-Mello FZ (2020) Species composition and community structure of dung beetles (Coleoptera: Scarabaeidae: Scarabaeinae) compared among savanna and forest formations in the southwestern Brazilian Cerrado. Zoologia 37: 1-12. https://doi.org/10.3897/zoologia.37.e58960
Figure 4 Rank abundances of dung beetles compared among the four plant formations in the Serra Azul State Park (SASP), state of Mato Grosso, Brazil. The letters indicate the more abundant species: (A) Eurysternus caribaeus, (B) Dichotomius aff. carbonarius, (C) Onthophagus aff. hirculus, (D) Eurysternus nigrovirens, (E) Canthon aff. simulans, (F) Onthophagus buculus, (G) Oxysternon palemo, (H) Canthon fortemarginatus, (I) Canthidium aff. barbacenicum.
Figure 3 from: Silva JL, Silva RJ, Fernandes IM, Sousa WO, Vaz-de-Mello FZ (2020) Species composition and community structure of dung beetles (Coleoptera: Scarabaeidae: Scarabaeinae) compared among savanna and forest formations in the southwestern Brazilian Cerrado. Zoologia 37: 1-12. https://doi.org/10.3897/zoologia.37.e58960
Figure 3 Proportions of the three guilds of dung beetle by abundance and richness compared among the four plant formations in the Serra Azul State Park (SASP), summing both trap types (pitfall, FIT).
Figure 6 from: Silva JL, Silva RJ, Fernandes IM, Sousa WO, Vaz-de-Mello FZ (2020) Species composition and community structure of dung beetles (Coleoptera: Scarabaeidae: Scarabaeinae) compared among savanna and forest formations in the southwestern Brazilian Cerrado. Zoologia 37: 1-12. https://doi.org/10.3897/zoologia.37.e58960
Figure 6 Ordination (PCoA) of the beetle assemblages in each plant formation in Serra Azul State Park (SASP), state of Mato Grosso, Brazil, with the vectors of spatial attributes (dbMEM).
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.