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1,067 results for “perturbation”
Fig. 12 in Brachiopods and their response to the Early-Middle Frasnian biogeochemical perturbations on the South Polish carbonate shelf
Fig. 12. Scatter diagrams of shell width to shell length (A), shell thickness to shell length (B), sulcus width to shell width (C), and number of costae on fold to shell width (D) ratios in Flabellulirostrum rackii sp. nov. from Wietrznia.
Fig. 11 in Brachiopods and their response to the Early-Middle Frasnian biogeochemical perturbations on the South Polish carbonate shelf
Fig. 11. Serial sections of two shells of Flabellulirostrum rackii sp. nov., ZPAL Bp 60/30 (A) and ZPAL Bp 60/31 (B), middle Wietrznia Beds of Wietrznia Ie. Numbers refer to distance in mm from ventral umbo.
Fig. 13 in Brachiopods and their response to the Early-Middle Frasnian biogeochemical perturbations on the South Polish carbonate shelf
Fig. 13. Serial sections of two shells of Coeloterorhynchus dillanus (Schmidt, 1941), ZPAL Bp 60/32 (A) and ZPAL Bp 60/33 (B), middle Wietrznia Beds of Wietrznia Ie. Numbers refer to distance in mm from ventral umbo.
Fig. 15 in Brachiopods and their response to the Early-Middle Frasnian biogeochemical perturbations on the South Polish carbonate shelf
Fig. 15. Serial sections of the shell of Coeloterorhynchus schucherti (Stainbrook, 1945), ZPAL Bp 60/34, middle Wietrznia Beds of Wietrznia Ie. Numbers refer to distance in mm from ventral umbo.
Fig. 8 in Brachiopods and their response to the Early-Middle Frasnian biogeochemical perturbations on the South Polish carbonate shelf
Fig. 8. Rhynchonellid brachiopods from the Frasnian of Wietrznia and Dębnik. A. Flabellulirostrum guerichi (Baliński, 1979), ZPAL Bp 60/15, complete shell from the Nodular Limestone (Palmatolepis hassi Zone) of Dębnik in dorsal (A1), ventral (A2), lateral (A3), posterior (A4), and anterior (A5) views. B–D. Flabellulirostrum kielcensis sp. nov., ZPAL Bp 60/1 (B), ZPAL Bp 60/2 (C), and GIUS 4−273 Wt/IM−1 (D), three shells (C—holotype) from the middle Wietrznia Beds of Wietrznia Ie (B, C) and Id−W (D), in dorsal (B1, C1, D1), ventral (B2, C2, D2), lateral (B3, C3, D3), posterior (B4, C4, D4), and anterior (B5, C5, D5) views. E–G. Flabellulirostrum rackii sp. nov., ZPAL Bp 60/11 (E), GIUS 4−273 Wt/IM−9 (F), and ZPAL Bp 60/12 (G), three shells (G—holotype) from the middle Wietrznia Beds of Wietrznia Ie (E, G) and Id−W (F) in dorsal (E1, F1, G1) ventral (E2, F2, G2), lateral (E3, F3, G3), posterior (E4, F4, G4), and anterior (E5, F5, G5) views.
Fig. 10 in Brachiopods and their response to the Early-Middle Frasnian biogeochemical perturbations on the South Polish carbonate shelf
Fig. 10. Scatter diagrams of shell width to shell length (A), shell thickness to shell length (B), sulcus width to shell width (C), and number of costae on fold to shell width ratios in Flabellulirostrum kielcensis sp. nov. from Wietrznia Id−W and Ie Wietrznia (solid diamonts) and Flabellulirostrum guerichi (Baliński, 1979) from Dębnik (open diamonts).
Fig. 9 in Brachiopods and their response to the Early-Middle Frasnian biogeochemical perturbations on the South Polish carbonate shelf
Fig. 9. Serial sections of Flabellulirostrum kielcensis sp. nov., ZPAL Bp 60/29, middle Wietrznia Beds of Wietrznia Ie. Numbers refer to distance in mm from ventral umbo.
Fig. 7 in Brachiopods and their response to the Early-Middle Frasnian biogeochemical perturbations on the South Polish carbonate shelf
Fig. 7. Rhynchonellid brachiopods from the Frasnian of Wietrznia and Dębnik. A, B. Hypothyridina sp., ZPAL Bp 60/28 (A) and GIUS 4−273 Wt/IM−4 (B), two complete shells from the middle Wietrznia Beds of Wietrznia Ie and Id−W, respectively, in dorsal (A1, B1), ventral (A2, B2), lateral (A3, B3), posterior (A4, B4), and anterior (A5, B5) views. C. Fitzroyella alata Biernat, 1969, GIUS 4−273 Wt/GR−1, complete shell from the middle Wietrznia Beds of Wietrznia Id−W. D, E. Fitzroyella sp. from the middle Wietrznia Beds of Wietrznia Id−W. D. Incomplete specimen GIUS 4−273 Wt/IM−7 in dorsal (D1) and ventral (D2) views. E. Complete shell GIUS 4−273 Wt/GR−2 in dorsal (E1), ventral (E2), lateral (E3), posterior (E4), and anterior (E5) views. F, G. Plionoptycherhynchus cracoviensis (Gürich, 1903) from the Nodular Limestone (Palmatolepis hassi Zone) of Dębnik. F. ZPAL Bp 60/17, fragment of a large shell in ventral view. G. ZPAL Bp 60/4, complete shell in dorsal (G1), ventral (G2), lateral (G3), posterior (G4), and anterior (G5) views. H. Phlogoiderhynchus polonicus (Roemer, 1866) from the middle Wietrznia Beds of Wietrznia Id−W, shell GIUS 4−273 Wt/IM−8 in dorsal (H1), ventral (H2), lateral (H3), posterior (H4), and anterior (H5) views.
Fig. 6 in Brachiopods and their response to the Early-Middle Frasnian biogeochemical perturbations on the South Polish carbonate shelf
Fig. 6. Orthid, strphomenid, productid, and pentamerid brachiopods from the Frasnian of Wietrznia and Dębnik. A. Schizophoria (Schizophoria) sp., ZPAL Bp 60/1, exterior of dorsal valve from the middle Wietrznia Beds of Wietrznia Ie. B, C. Corbicularia cracoviensis Baliński, 1979, ZPAL Bp 60/18 (B) and ZPAL Bp 60/19 (C), two specimens embedded in rock from the Nodular Limestone (Pa. hassi Zone) of Dębnik. D. Devonoproductus sp., GIUS 4−273 Wt/IM−2, incomplete ventral valve from the middle Wietrznia Beds of Wietrznia Ie. E. Douvillina sp., ZPAL Bp 60/13, two shells embedded in rock from the Nodular Limestone (Pa. hassi Zone) of Dębnik. F. Gypidula sp., ZPAL Bp 60/23, ventral (F1) and lateral (F2) views of the ventral valve from the middle Wietrznia Beds of Wietrznia Ie.
Fig. 5 in Brachiopods and their response to the Early-Middle Frasnian biogeochemical perturbations on the South Polish carbonate shelf
Fig. 5. Discinoid Roemerella? sp. from middle Szydłówek Beds, Kostomłoty II. A. ZPAL Bp 60/27−10, nine specimens adhered to large shell of Phlogoiderhynchus polonicus (Roemer, 1866). B. ZPAL Bp 60/27−9, strongly flattened specimen adhered in the sulcus of a shell of Phlogoiderhynchus polonicus. C. ZPAL Bp 60/27−6, enlargement of flattened and crushed specimen showing details of surface ornamentation.
Fig. 4 in Brachiopods and their response to the Early-Middle Frasnian biogeochemical perturbations on the South Polish carbonate shelf
Fig. 4. Succession of brachiopod assemblages in studied sections during the Early–Middle Frasnian (Palmatolepis transitans–Pa. hassi conodont zones) against carbon isotope record; the δ13C curve generalised from detailed records of Pisarzowska et al. (2006). Abbreviation: Pa., Palmatolepis.
Fig. 1 in Brachiopods and their response to the Early-Middle Frasnian biogeochemical perturbations on the South Polish carbonate shelf
Fig. 1. Location of collecting sites. A. General map of Poland. B. Geological sketch−map of the western part of the Holy Cross Mountains (after Racki et al. 2004; modified). C. Sketch map of Wietrznia quarries and location of the studied sections (after Makowski in Racki et al. 1993, simplified). D. Geological sketch−map of the Dębnik vicinity (after Szulczewski and Dvořák 1995; modified).
Dataset for paper "The naphthylated LEGO-lipophosphonoxin antibiotics used as a fluorescent tool for observation of target membrane perturbations preceding its disruption"
<p><span><span><span>The individual text files contain all the numerical data shown in Figures 2-10 in the publication.</span></span></span></p>
Outputs from Isca perturbed parameter ensemble (PPE) simulations (Part I)
<p>Outputs from Isca perturbed paramter ensemble (PPE) simulations under 1xCO2 (control run) and 4xCO2 (perturbed run), in which the simulations are prescribed with Q-flux.</p> <ul> <li>cld_fbk_cmp.zip: The outputs used for the comparison of cloud feedback computation methods.</li> <li>qflux_clisccp_data.zip: The outputs contain the variable clisccp from control and perturbed runs, used for the cloud feedabck calculation</li> <li>qflux_extracted_data_toa_flux_30yr.zip: The last 30-year top of the atmosphere (TOA) flux data used for deriving the equilibrium climate sensitivity, total climate feedback and effective radiative forcing through the Gregory plot</li> <li>qflux_extracted_data.zip: The last 5-year simulation outputs for control and perturbed runs.</li> <li>qflux_extracted_data_10yr.zip: The last 10-year simulation outputs for control and perturbed runs.</li> </ul> <p>This is Part I, and Part II can be found at: <a href="https://doi.org/10.5281/zenodo.5188175">10.5281/zenodo.5188175</a></p>
Fig. 1 in Influence of environmental variables and anthropogenic perturbations on stream fish assemblages, Upper Paraná River, Central Brazil
Fig. 1. Locations of the sampled sites (dots) in the streams of the Ouvidor River, Goiás State, Brazil. Squares indicate the main cities.
Data for: The Martian atmospheric waves perturbation Datasets (MAWPD) version 2.0
<p class="MsoNormal"><span>The Martian atmospheric waves perturbation Datasets (MAWPD) version 2.0 is the first observation-based climatology dataset of Martian atmospheric waves.</span></p> <p class="MsoNormal"><span>It contains climatology-gridded temperature, gravity waves, and tides spanning the whole Martian year. MAWPD uses the Data INterpolating Empirical Orthogonal Functions method (DINEOF) reconstruction method for data assimilation with the observational data from the Mars Global Surveyor (MGS), Mars Reconnaissance Orbiter (MRO), Mars Atmosphere and Volatile EvolutioN (MAVEN), Mars Pathfinder (MP), Mars Phoenix Lander (MPL), Mars Exploration Rover (MER) and Mars Express (MEX) temperature retrievals. The dataset includes gridded fields of temperature (Level 1 data) as well as the physical quantities of GWs (Level 2 data, amplitude, and potential energies), SPWs and tides (Level 2 data, amplitude, and phase).</span></p> <p class="MsoNormal"><span>We found the MAWPD can well reflect the climatological variations of gravity and tidal waves in the Martian atmosphere. The dataset is useful for observation-based scientific studies concerning Martian atmospheric waves, e.g., circulation, dust storms, and the wave excitation mechanism on Mars, and their comparison with the reanalysis dataset.</span></p>
Dataset for "Roles of surface forcing in the Southern Ocean temperature and salinity changes under increasing CO2: perspectives from model perturbation experiments and a theoretical framework"
<p>Reference: Kewei Lyu, Xuebin Zhang, John A. Church, Quran Wu, Russell Fiedler, and Fabio Boeira Dias (2022), Roles of surface forcing in the Southern Ocean temperature and salinity changes under increasing CO<sub>2</sub>: perspectives from model perturbation experiments and a theoretical framework, <em>Journal of Physical Oceanography</em>, <a href="https://doi.org/10.1175/JPO-D-22-0095.1">https://doi.org/10.1175/JPO-D-22-0095.1</a></p>
Data from: Perturbations highlight importance of social history in parakeet rank dynamics
<p>Dominance hierarchies can provide many benefits to individuals, such as access to resources or mates, depending on their ranks. In some species, rank can emerge as a product of a group's history of social interactions. However, it can be difficult to determine whether social history is critical to rank in observation-based studies. Here, we investigated rank dynamics in three captive groups of monk parakeets (<em>Myiopsitta monachus</em>). We used experimental social perturbations to test whether social history shapes rank emergence in these groups. Using targeted removals and reintroductions, we tested whether differently ranked individuals could re-take their ranks in hierarchies after reintroduction following their removal period from the group. We performed perturbations that consisted of an eight-day removal and an eight-day reintroduction period of 15 differently ranked focal birds. We found that no focal birds could regain their previous rank immediately following reintroduction and that the top-ranked birds showed greater relative rank loss than middle/low-ranked birds. We also found that morphology, specifically body weight, was unassociated with rank. Combined with previous results, this experiment supports the hypothesis that rank in monk parakeet dominance hierarchies is more likely to be an emergent outcome of past interactions and memory rather than based on individual characteristics. Gaining a better understanding of how individuals achieve and maintain rank can give insight into the role of cognition on rank acquisition, as rank position can have significant biological effects on individuals in hierarchically structured groups.</p>
Perturbations in fatty acid metabolism and collagen production infer pathogenicity of a novel MBTPS2 variant in Osteogenesis imperfecta
<p>(i) PCR-sequencing: Chromatograms were generated by PCR-sequencing of a region within exon 4 of MBTPS2 using DNA extracted from a healthy control and the proband's fibroblasts</p> <p>(ii) Gene expression was quantified by qRT-PCR using RNA extracted from fibroblasts. Transcript levels of each gene of interest was calculated using the 2^-deltaCt method with normalization to the average Ct values of endogenous control genes GAPDH, IPO8 and TBP.</p> <p>(iii) Cellular fatty acid content was quantified by GC-MS/MS. Each table represents one technical replicate. Absolute values of each fatty acid are listed in the tables; relative ratios of various fatty acids are calculated at the bottom of each table. </p> <p>(iv) Immunocytochemistry images of ECM proteins (COL1 = collagen type I; COL4 = collagen type IV; COL5 = collagen type V; a2b1 = integrin a2b1) and binding of collagen-hybridising peptide (R-CHP).</p>
Applicability and limiations of Cluster Perturbation Theory for Hubbard models
<p>These are the Cluster Greensfunctions that were used in the paper "Applicability and limiations of Cluster<br> Perturbation Theory for Hubbard models" published as part of the special edition “S.I.: Non-Equilibrium Quantum<br> Physics, Many Body Systems, and Foundations of Quantum Mechanics” in the European Journal of Phyiscs in 2023.<br> The Greensfunctions were generated via a Chebyshev expansion and are currently in a real space representation.<br> You may use python and import them via numpy as follows:</p> <p>```console<br> import numpy as np</p> <p>MC = <number_of_sites> # Here you have to add the number of cluster sites (e.g. 16 for a 4x4 cluster)</p> <p>greensfunctions = np.genfromtxt("<file_name>")<br> greensfunctions = greensfunctions.reshape(greensfunctions.shape[0], MC, MC)<br> ```</p> <p>This way you obtain a tensor where the first dimension corresponds to the frequency and the other two<br> to the real space indices.</p> <p>For further questions please contact the corresponding author Nicklas Enenkel via E-mail<br> (nicklas.enenkel@quantumsimulations.de)</p>
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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.