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72 results for “oxygen consumption”
Dataset for: Oxygen isotope fractionation of O2 consumption through abiotic photochemical singlet oxygen formation pathways
<p>Dataset containing raw and treated isotope-ratio mass spectrometry data as well as O2 concentration data, accompanying the manuscript "Oxygen isotope fractionation of O2 consumption through abiotic photochemical singlet oxygen formation pathways".</p>
Figure 2 in Oxygen consumption rates and respiratory carbon losses in three species of copepods (Acartia clausi, Calanus helgolandicus and Limnocalanus macrurus) during starvation
Figure 2. Changes in Total (Ɣ, black lines), Basal (ż,blue lines) and Active (Ÿ, red lines) respiration in the Marmara Sea copepods Acartia clausi (A) and Calanus helgolandicus (B), and the Baltic Sea Limnocalanus macrurus (C) during starvation. Low-case letters (a, b and c) are the significant variable differences from Duncan's multiple range test (DMRT), p <0.05.
Figure 1 in Oxygen consumption rates and respiratory carbon losses in three species of copepods (Acartia clausi, Calanus helgolandicus and Limnocalanus macrurus) during starvation
Figure 1. Acartia clausi (a), Limnocalanus macrurus (b) and Calanus helgolandicus (c). Arrows indicate anterior (1) and posterior (2) oil sacs of L. macrurus and oil sac of C. helgolandicus (3).
Data from: The SCOC database – a large, open and global database with sediment community oxygen consumption rates
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Dityrosine formation via reactive oxygen consumption yields increasingly recalcitrant humic-like fluorescent organic matter in the ocean
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Oxygen consumption (VO 2) was determined from the formula in Diurnal activity, temperature responses and endothermy in three South American cicadas (Homoptera: Cicadidae: Dorisiana bonaerensis, Quesada gigas and Fidicina mannifera)
Oxygen consumption (VO 2) was determined from the formula
Microscopic Quantification of Oxygen Consumption across Cortical Layers
<p>The cerebral cortex is organized in cortical layers that differ in their cellular density, composition, and wiring. Cortical laminar architecture is also readily revealed by staining for cytochrome oxidase – the last enzyme in the respiratory electron transport chain located in the inner mitochondrial membrane. It has been hypothesized that a high-density band of cytochrome oxidase in cortical layer IV reflects higher oxygen consumption under baseline (unstimulated) conditions. Here, we tested the above hypothesis using direct measurements of the partial pressure of O<sub>2</sub> (pO<sub>2</sub>) in cortical tissue by means of 2-photon phosphorescence lifetime microscopy (2PLM). We revisited our previously developed method for extraction of the cerebral metabolic rate of O<sub>2</sub> (CMRO<sub>2</sub>) based on 2-photon pO<sub>2</sub> measurements around diving arterioles and applied this method to estimate baseline CMRO<sub>2</sub> in awake mice across cortical layers. To our surprise, our results revealed<em> a decrease in baseline CMRO<sub>2</sub> from layer I to layer IV</em>. This decrease of CMRO<sub>2</sub> with cortical depth was paralleled by <em>an increase in tissue oxygenation. </em>Higher baseline oxygenation and cytochrome density in layer IV may serve as an O<sub>2</sub> reserve during surges of neuronal activity or certain metabolically active brain states rather than baseline energy needs. Our study provides the first quantification of microscopically resolved CMRO<sub>2</sub> across cortical layers as a step towards better understanding of the brain energy metabolism.</p>
Raw data of Octopus maya embryos along the development: wet weight, oxygen consumption, antioxidant defence mechanisms and oxidative damage.
<p>Raw data on oxygen consumption and antioxidant defense mechanisms of Octopus maya embryos were maintained in laboratory conditions at 24°C. Those data were obtained during the embryo development. The antioxidant defense mechanisms and oxidant damage were also obtained from the ovary and the un-spawned eggs, allowing to us known how is the oxidant damage translated from the females to embryos in this octopus species. </p>
Generated data for "Limited ventilation of the central Baltic Sea due to elevated oxygen consumption" paper
<p>This data are essential for reproducing the figures from Naumov et al. "Limited ventilation of the central Baltic Sea due to elevated oxygen consumption" paper. Each archive is named after one of the ten figures and includes the data necessary for that specific figure. Some data are used in more than one figure. In some cases, performing a particular type of analysis with the given data (linear regression, for instance) is necessary to fully reproduce the figure.</p>
24 Hour Ambulatory Cardiac Oxygen Consumption
ClinicalTrials.gov study NCT05170061. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Oxygen Consumption-based Assessments of Hemodynamics in Neonates Following Congenital Heart Surgery (Oxy-CAHN Study)
ClinicalTrials.gov study NCT02184169. IPD Sharing: NO. Countries: 1. Publications: 1.
Data from: Estimation of lifelong metabolic rates in marine fish: A combination of oxygen consumption measurements and δ13C metabolic proxy derived from vertebral structural carbonates
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Oxygen consumption of juvenile brown trout, Salmo trutta, under varying thermal conditions during embryogenesis
<p>Climate change is predicted to increase the future thermal conditions in northern latitudes with the potential effect of altering the metabolic scope and potential fitness of aquatic ectotherms. We experimentally tested the effect of elevated egg incubation temperature on the metabolic scope in juvenile brown trout (<i>Salmo trutta</i>). Brown trout cohorts from anadromous and resident crosses were raised from egg through exogenous feeding of juveniles in either natural river temperatures (cold) or elevated (+ 3 °C, warm) temperatures. In respirometry studies, we measured oxygen consumption rates of juvenile trout from both incubation temperatures and all possible breeding crosses after they were feeding exogenously and at an ambient temperature of 13 °C. These measures were taken over a period where the trout were resting, allowing for the determination of standard metabolic rate (SMR), and followed by a chase to exhaustion allowing for the measure of the maximum metabolic rate (MMR). The aerobic scope (AS) of these juveniles from four anadromous-resident crosses and from both incubation temperatures could then be calculated as AS = MMR – SMR. This dataset represents a key to all respiration trials including: fish embryonic incubation temperature, parental cross, fish total length (mm), calculated mass (g) per fish, ventilation rate (opercular beats/min), and water temperature per respiration trial. For each fish tested, the dissolved oxygen levels in the respirometry chamber were recorded continuously through periods of static respiration and recharge flow in 15 sec intervals for the duration of the trial testing periods (~ 5-7 hrs). These data were evaluated for SMR and MMR using a respiration program (respR) in the R statistical program.</p>
Locomotor endurance and oxygen consumption of harvestmen
<p>Animal movements are highly constrained by morphology and energetics. In addition, predictable bodily damage can constrain locomotion even further. For example, for animals moving on land, losing legs may impose additional costs. We tested if losing legs affects the distance travelled over time (endurance) and the metabolic costs of locomotion (oxygen consumption) in Nelima paessleri harvestmen. These arachnids voluntary releases legs (i.e., autotomy) in response to predation attempts. We used flow-through respirometry as animals moved on a treadmill inside a sealed chamber. We found that endurance decreased gradually with an increasing number of legs lost. Interestingly, oxygen consumption increased only for harvestmen that lost three legs, but not for individuals that lost only a single leg. These results have different ecological and evolutionary implications. Reduced endurance may impair an animal's ability to continue moving away from potential predators, while increased oxygen consumption makes movement costlier. Our findings suggest that individuals have a threshold number of legs that can be lost before experiencing measurable energetic consequences. Overall, our findings illustrate how animals respond to morphological modifications (i.e., damage) that affect the physiology of locomotion.</p>
Supplementary material 1 from: Freire CA, Rios LP, Giareta EP, Castellano GC (2017) Oxygen consumption remains stable while ammonia excretion is reduced upon short time exposure to high salinity in Macrobrachium acanthurus (Caridae: Palaemonidae), a recent freshwater colonizer. Zoologia 34: 1-9. https://doi.org/10.3897/zoologia.34.e20173
Figure S1. Cephalothorax of Macrobrachium acanthurus exposed to salinities 0 (control), 10, 20, and 30 psu for 4 or 8 hours. : Data type: JPEG image file
Oxygen Consumption In Critically Ill Children
ClinicalTrials.gov study NCT01521195. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Oxygen Consumption (VO2), Effort, and Weaning in the Mechanically Ventilated Patient in the Intensive Care Unit (ICU)
ClinicalTrials.gov study NCT06391424. IPD Sharing: UNDECIDED. Countries: 1. Publications: 11.
The Increase Study. Effect of Incremental Versus Fixed Pump on Peak Oxygen Consumption in Heart Failure Patients Supported With a Continuous Flow Left Venticular Assist Device
ClinicalTrials.gov study NCT01698398. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Oxygen Consumption in Critical Illness
ClinicalTrials.gov study NCT02163109. IPD Sharing: Not stated. Countries: 1. Publications: 6.
The Effects of Sacubitril/Valsartan on Cardiac Oxygen Consumption and Efficiency of Cardiac Work in Heart Failure Patients
ClinicalTrials.gov study NCT03300427. IPD Sharing: YES. Countries: 1. Publications: 0.
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
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)
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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.