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9 results for “oscillating flows”
Fig. 2. Water level oscillation measured between August 1998 and July 2000 in Flow seasonality and fish assemblage in a tropical river, French Guiana, South America
Fig. 2. Water level oscillation measured between August 1998 and July 2000 at the Hydrological station on the Comté River. The numbers indicate the mean water level during the month of sampling.
Low-frequency oscillations of blood flow velocity
<p>figS4a-d.h5 - Intensity profiles obtained by scanning along a line (described by the below attribute) placed along a FITCdextran stained vessel. Record features traces of individual red blood cells from which the blood flow velocity in figure S4 was obtained.<br> File contains single dataset:<br> 1 - Imaging data_200807_111309 -> voltage from PMT collecting FITCdextran fluorescence signal<br> The dataset features two attributes:<br> 1 - Display Time -> hologram dwell time in microseconds<br> 2 - Image Dimentions -> dimensions of the full resolution image used prior the line-scans has been selected <br> 3 - ROI_XY -> coordinates of individual pixels of the scanning trajectory</p> <p> </p>
Distribution of blood flow oscillation across the Doppler shift evaluated by the proposed approach with local pressure test.
<p>A step-wise increase in local pressure is known to cause a gradual change in the parameters of capillary blood flow in the<br> upper layers of the skin, and can also affect the measurement results of various optical methods. The impact of the procedure has several subsequent effects, such as mechanical compression of vessels, and neurological and metabolic compensating mechanisms like pressure-induced vasodilation, which maintain the homeostasis of the skin during moderate levels of external pressure and tissue hypoxia. To examine how those effects are translated to the blood flow registering in different ranges of the Doppler spectra, we have developed a 3D-printed pressure distribution tool compatible with the developed sensor which was used, and equipped with a set of weights. </p> <p>During the main series of measurements, the weights were placed into the PDT in a step-wise manner to achieve the<br> following values of pressure applied: 10 mmHg, 30 mmHg, 90 mmHg, 150 mmHg, 210 mmHg. At the end of the procedure, the load was reduced back to 30 mmHg. Experiments were conducted with the participation of 7 healthy volunteers with 10 min LDF recording for each step. To estimate the prominence of the observed effects and substantiate the measuring routing, several preliminary experiments were also conducted where the set of values of pressure was applied with a step-wise increase and then decrease with about 2 min of LDF recordings for each step.</p> <p>Published in IEEE Transactions on Biomedical Engineering "Diagnosis of skin vascular complications revealed by time-frequency analysis and laser Doppler spectrum decomposition", Zherebtsov et al.</p>
Data from: Breaking out of the comfort zone: El Niño-Southern Oscillation as a driver of trophic flows in a benthic consumer of the Humboldt Current ecosystem
The trophic flow of a species is considered a characteristic trait reflecting its trophic position and function in the ecosystem and its interaction with the environment. However, climate patterns are changing and we ignore how patterns of trophic flow are being affected. In the Humboldt Current ecosystem, arguably one of the most productive marine systems, El Niño-Southern Oscillation is the main source of interannual and longer-term variability. To assess the effect of this variability on trophic flow we built a 16-year series of mass-specific somatic production rate (P/B) of the Peruvian scallop (Argopecten purpuratus), a species belonging to a former tropical fauna that thrived in this cold ecosystem. A strong increase of the P/B ratio of this species was observed during nutrient-poor, warmer water conditions typical of El Niño, owing to the massive recruitment of fast-growing juvenile scallops. Trophic ecology theory predicts that when primary production is nutrient limited, the trophic flow of organisms occupying low trophic levels should be constrained (bottom-up control). For former tropical fauna thriving in cold, productive upwelling coastal zones, a short time of low food conditions but warm waters during El Niño could be sufficient to waken their ancestral biological features and display massive proliferations.
Unstable gas flow in a flat channel under the influence of a transverse force field: self-oscillations of the jet
<p>For a description of the task, see the original paper.</p> <div> <div> <div> <div>For each video, there are the meaning of force (F), Section and Subsection of the article where this video is mentioned, as well as the number of Figure from the article corresponding to this calculation. The Mach number is 0.29 for all the calculations.</div> </div> </div> </div> <p>(1) "Video-1.avi": </p> <p>F = 2.5, </p> <p>Section "Main modeling results"</p> <p>Subsection "Weak force field"</p> <p>Figure 2</p> <p> </p> <p>(2) "Video-2.avi": </p> <p>F = 4, </p> <p>Section "Main modeling results"</p> <p>Subsection "Strong force field"</p> <p>Figure 3</p> <p> </p> <p>(3) "Video-3.avi": </p> <p>F = 3, </p> <p>Section "Main modeling results"</p> <p>Subsection "Average force field"</p> <p>Figure 4</p> <p> </p> <p>(4) "Video-4.avi": </p> <p>F = 7 (continuous force field, see Figure 5), </p> <p>Section "Main modeling results"</p> <p>Subsection "Continuous force field"</p> <p>Figure 6</p>
pCO2 Oscillations During Exercise: Relation to Cerebral Blood Flow and to Cognitive Dysfunction in COPD
ClinicalTrials.gov study NCT02660437. IPD Sharing: NO. Countries: 1. Publications: 8.
Data from: Breaking out of the comfort zone: El Niño-Southern Oscillation as a driver of trophic flows in a benthic consumer of the Humboldt Current ecosystem
Open the record for dataset details and reuse information.
Evaluating Forced Oscillation Technique (FOT) in Abolishing Flow Limitation
ClinicalTrials.gov study NCT01151618. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Forced Oscillation Technique (FOT) and Expiratory Flow Limitation (EFL)
ClinicalTrials.gov study NCT00499304. IPD Sharing: Not stated. Countries: 1. Publications: 0.
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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.
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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.