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832 results for “Stem analysis”
Figure 4. Results from the phylogenetic analysis using discrete data only. A in Exploring phylogenetic relationships of Pteraspidiformes heterostracans (stem-gnathostomes) using continuous and discrete characters
Figure 4. Results from the phylogenetic analysis using discrete data only. A, strict consensus of 275 most parsimonious trees with equal character weights; length 276 steps, consistency index (CI) = 0.35, retention index (RI) = 0.59, and rescaled consistency index (RC) = 0.22. B, strict consensus of four most parsimonious trees with implied character weighting (k = 3) (tree length 23.11). Psammosteidae taxa in bold.
Figure 9 in Combined phylogenetic analysis of a new North American fossil species confirms widespread Eocene distribution for stem rollers (Aves, Coracii)
Figure 9. Strict consensus cladogram of 24 most parsimonious trees (length = 345; consistency index = 0.499; retention index = 0.474; rescaled consistency index = 0.237) from the analysis using the morphological data set. Bootstrap support values are presented above and Bremer support values are presented below the branch they refer to. Note that the crown clade Coracioidea (Coraciidae + Brachypteraciidae) is not labelled; the position of Geranopterus alatus with respect to this clade is unresolved. †, extinct taxa; NA, North American Coracii.
Figure 6 in Combined phylogenetic analysis of a new North American fossil species confirms widespread Eocene distribution for stem rollers (Aves, Coracii)
Figure 6. Distal wing elements of Paracoracias in dorsal view. Anatomical abbreviations: I:1, left manual phalanx I:1; II:1, manual phalanx II:1; II:2, manual phalanx II:2; cmc, carpometacarpus; r, radius; u, ulna; ul, ulnare.
Figure 4 in Combined phylogenetic analysis of a new North American fossil species confirms widespread Eocene distribution for stem rollers (Aves, Coracii)
Figure 4. Cervical series, thoracic region, and sacrum of Paracoracias. Anatomical abbreviations: c, coracoid; cev, cervical vertebrae; f, frontal; fe, femur; fu, furcula; h, humerus; i, ischium; k, keel; lp, lateral process of sternum; p, pubis; r, radius; s, scapulae; sa, sacrum; u, ulna; up, uncinate processes.
Figure 2 in Combined phylogenetic analysis of a new North American fossil species confirms widespread Eocene distribution for stem rollers (Aves, Coracii)
Figure 2. Holotype specimen of Paracoracias occidentalis (AMNH 30572). Anatomical abbreviations: II:1, manual phalanx II:1; cev, cervical vertebrae; cmc, carpometacarpus; cv, caudal vertebrae; f, frontal; fe, femur; h, humerus; k, keel; lp, lateral process of sternum; m, mandible; pe, pelvis; pmx, premaxilla; r, radius; s, scapulae; tbt, tibiotarsus; tmt, tarsometatarsus; u, ulna.
Figure 5 in Combined phylogenetic analysis of a new North American fossil species confirms widespread Eocene distribution for stem rollers (Aves, Coracii)
Figure 5. Pectoral girdle and limbs of Paracoracias. Anatomical abbreviations: I:1, manual phalanx I:1; II:1, manual phalanx II:1; II:2, manual phalanx II:2; c, coracoid; cmc, carpometacarpus; fu, furcula; h, humerus; lp, lateral process of sternum; r, radius; s, scapulae; t, tracheal ring; tbt, tibiotarsus; u, ulna; ul, ulnare.
Figure 3 in Combined phylogenetic analysis of a new North American fossil species confirms widespread Eocene distribution for stem rollers (Aves, Coracii)
Figure 3. Skull of Paracoracias. Anatomical abbreviations: cv, caudal vertebrae; f, frontal; hy, hyoid; j, jugal; l, lacrimal; m, mandible; na, naris; pal, palatine; pmx, premaxilla; por, postorbital process; pt, pterygoid; py, pygostyle; scl, sclerotic ring.
Figure 7 in Combined phylogenetic analysis of a new North American fossil species confirms widespread Eocene distribution for stem rollers (Aves, Coracii)
Figure 7. Pelvic limb of Paracoracias in lateral view. Anatomical abbreviations: I:1, pedal phalanx I:1; II:1, pedal phalanx II:1; fb, fibula; fe, femur; h, humerus; tbt, tibiotarsus; tmt, tarsometatarsus; u, ulna.
Figure 8 in Combined phylogenetic analysis of a new North American fossil species confirms widespread Eocene distribution for stem rollers (Aves, Coracii)
Figure 8. Strict consensus cladogram of two most parsimonious trees (length = 4882; consistency index = 0.424; retention index = 0.798; rescaled consistency index = 0.340) from the combined analysis using all morphological and sequence data (ND2, RAG-1, and c-myc). Bootstrap support values are presented above and Bremer support values are presented below the branch they refer to. Note that the crown clade Coracioidea (Coraciidae + Brachypteraciidae) is not labelled; the position of Geranopterus alatus with respect to this clade is unresolved. †, extinct taxa; NA, North American Coracii.
Refining impact assessment in undergraduate STEM education: Differential item functioning analysis of field-based learning interventions
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Weights and lengths from retrospective growth analysis of different stem age classes of Betula nana, 1995, Arctic LTER, Toolik Lake, Alaska.
This data file contains the data on weights and lengths from retrospective growth analysis of different stem age classes of Betula nana ramets from the LTER Nutrient and Warming manipulations in tussock tundra at Toolik Lake.
Thermal melting and smFET analysis of UUCG stem-loop
<p>Raw data generated for the purpose of the research project titled: "RNA adapts its flexibility to efficiently fold and resist unfolding".</p> <p> </p>
Figure 1 in Combined phylogenetic analysis of a new North American fossil species confirms widespread Eocene distribution for stem rollers (Aves, Coracii)
Figure 1. Map showing the distribution of extant and extinct Coracii.
Single cell analysis of human mesenchymal stem cells
<p>This dataset including the RDS files, including meta data, labeled assays, and reduction map information in order to ensure the reproducibility of the scRNA-seq data of human MSCs.</p> <p>The research "Multi-omics analysis of human mesenchymal stem cells shows cell aging that alters immunomodulatory activity through the downregulation of PD-L1" has been published on Nature Communications (https://doi.org/10.1038/s41467-023-39958-5).</p>
Transcriptomic analysis of skeletal muscle regeneration across mouse lifespan identifies altered stem cell states
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A new algorithm for reconstructing tree height growth with stem analysis data
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Data on weights and lengths from retrospective growth analysis of different stem age classes of Betula nana ramets from the Arctic LTER Nutrient and Warming manipulations in mosit acidic tussock tundra at 1995, Toolik Lake, AK.
This data file contains the data on weights and lengths from retrospective growth analysis of different stem age classes of Betula nana ramets from the Arctic LTER Nutrient and Warming manipulations in moist acidic tussock tundra at Toolik Lake.
Data from: Trait correlation network analysis identifies biomass allocation traits and stem specific length as hub traits in herbaceous perennial plants
Correlations among plant traits often reflect important trade‐offs or allometric relationships in biological functions like carbon gain, support, water uptake, and reproduction that are associated with different plant organs. Whether trait correlations can be aggregated to "spectra" or "leading dimensions," whether these dimensions are consistent across plant organs, spatial scale, and growth forms are still open questions. To illustrate the current state of knowledge, we constructed a network of published trait correlations associated with the "leaf economics spectrum," "biomass allocation dimension," "seed dimension," and carbon and nitrogen concentrations. This literature‐based network was compared to a network based on a dataset of 23 traits from 2,530 individuals of 126 plant species from 381 plots in Northwest Europe. The observed network comprised more significant correlations than the literature‐based network. Network centrality measures showed that size traits such as the mass of leaf, stem, below‐ground, and reproductive tissues and plant height were the most central traits in the network, confirming the importance of allometric relationships in herbaceous plants. Stem mass and stem‐specific length were "hub" traits correlated with most traits. Environmental selection of hub traits may affect the whole phenotype. In contrast to the literature‐based network, SLA and leaf N were of minor importance. Based on cluster analysis and subsequent PCAs of the resulting trait clusters, we found a "size" module, a "seed" module, two modules representing C and N concentrations in plant organs, and a "partitioning" module representing organ mass fractions. A module representing the plant economics spectrum did not emerge. Synthesis. Although we found support for several trait dimensions, the observed trait network deviated significantly from current knowledge, suggesting that previous studies have overlooked trait coordination at the whole‐plant level. Furthermore, network analysis suggests that stem traits have a stronger regulatory role in herbaceous plants than leaf traits.
Co-condensation of silica and lignin: STEM tomography and EDS analysis
<p>Data files associated with publication: "Silica Biomineralization with Lignin Involves Si−O−C Bonds That<br>Stabilize Radicals", https://doi.org/10.1021/acs.biomac.4c00061 </p> <p>A) Tomographic reconstruction of the silica-lignin particles by HAADF-STEM, a single .mrc volume file.</p> <p>B) Energy Dispersive X-ray Spectroscopy analysis of in vitro condensation of silica and lignin. Bruker format .emd files with screen previews included. </p>
Fig. 2 Sectioned solemydid specimens and resulting binary images used for compactness analysis with Bone Profiler. a in Shell bone histology of solemydid turtles (stem Testudines): palaeoecological implications
Fig. 2 Sectioned solemydid specimens and resulting binary images used for compactness analysis with Bone Profiler. a Solemys vermiculata, costal fragment (MCNA-15047). b Solemys vermiculata, shell fragment (MCNA-15046). c Solemys sp., costal fragment (UPUAM-14001)
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