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51 results for “electric discharge”
Tussock Watershed stream discharge, electrical conductivity, and temperature measurements from 2005
Tussock Watershed stream discharge, electrical conductivity, and temperature measurements from 2005.
Ecologically mediated differences in electric organ discharge drive evolution in a sodium channel gene in South American electric fishes
<p>Active electroreception — the ability to detect objects and communicate with conspecifics via the detection and generation of electric organ discharges (EODs) — has evolved convergently in several fish lineages. South American electric fishes (Gymnotiformes) are a highly species-rich group, possibly in part due to evolution of an electric organ (EO) that produces diverse EODs. Neofunctionalization of a voltage-gated sodium channel accompanied the evolution of electrogenic tissue from muscle and resulted in a novel gene (scn4aa) uniquely expressed in the EO. Here, we investigate the link between variation in scn4aa and differences in EOD waveform. We combine gymnotiform scn4aa sequences encoding the C-terminus of the Nav1.4a protein with biogeographic data and EOD recordings. We test whether physiological transitions among EOD types accompany differential selection pressures on scn4aa. We found positive selection on scn4aa coincided with shifts in EOD types. Species that evolved in the absence of predators, which likely selected for reduced EOD complexity, exhibited increased scn4aa evolutionary rates. We model mutations in the protein that may underlie changes in protein function and discuss our findings in the context of gymnotiform signalling ecology. Together, this work sheds light on the selective forces underpinning major evolutionary transitions in electric signal production.</p>
The influence of electric circuit parameters on NOx generation by transient spark discharge _ data
<p>dataset for</p> <p>The influence of electric circuit parameters on NOx generationby transient spark discharge</p> <p> </p> <p>Abstract</p> <p>Nitrogen fixation, production of NO and NO<sub>2</sub> from N<sub>2</sub> and O<sub>2</sub> in air, has been investigated with<br> transient spark self-pulsing DC discharges. NO production is boosted by the addition of capacitors<br> and an inductor to the electrical circuit which drives the discharge. The quantity of NO produced<br> per joule of electrical input energy is doubled, though the quantity of NO<sub>2</sub> produced drops. The<br> yield of NO is also increased because the modified circuit enables higher discharge currents to be<br> used. NO concentrations as high as 2000 ppm were obtained with input energy densities of around<br> 300 J per litre of input gas, whilst NO<sub>2</sub> concentrations were around 150 ppm. This simple<br> modification of the driving circuit may have potential for optimizing the plasma chemistry with<br> other input gas mixtures and for scaling up nitrogen fixation from air.</p>
DataSet: Partial Discharge Power Flow in Gas-Insulated Substations Using Magnetic and Electric Antennas
<p>Dataset of the measurements presented in the paper "Partial Discharge Power Flow in Gas-Insulated Substations Using Magnetic and Electric Antennas" in the conference ISH 2023</p>
Dataset: Magnetic and electric antennas synergy for partial discharge measurements in gas-insulated substations: Power flow and reflection suppression
<p>Data set for the publication named: Magnetic and electric antennas synergy for partial discharge measurements in gas-insulated substations: Power flow and reflection suppression. Each header corresponds to the figure and legend.</p>
Dataset: Magnetic and electric antennas calibration for partial discharge charge estimation in gas-insulated substations
<p>Data set for the publication named: Magnetic and electric antennas calibration for partial discharge charge estimation in gas-insulated substations</p>
Ecologically mediated differences in electric organ discharge drive evolution in a sodium channel gene in South American electric fishes
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FIGURE 5 in Electric organ discharges of South African Marcusenius species (Teleostei: Mormyridae) and their effectiveness as indicators of local species diversity
FIGURE 5. Male. Discriminant analysis (DA) of characters of the electric organ discharge (EOD) waveform of five male samples of South African Marcusenius species, compared to M. devosi specimens from Kenya (D symbols). B, S and P symbols, M. pongolensis specimens from different South African locations; K symbols, M. krameri. EOD waveform characters that were included in DA as given in Table 2, but Ndur excluded because of irrelevance in the male sample.
FIGURE 4 in Electric organ discharges of South African Marcusenius species (Teleostei: Mormyridae) and their effectiveness as indicators of local species diversity
FIGURE 4. Female. Discriminant analysis (DA) of characters of the electric organ discharge (EOD) waveform of five female plus juvenile samples of South African Marcusenius species, compared to M. devosi specimens from Kenya (D symbols). B, S and P symbols, M. pongolensis specimens from different South African locations; K symbols, M. krameri. EOD waveform characters that were included in DA as given in Table 3, but PNsep excluded because of irrelevance in the female sample.
FIGURE 2 in Electric organ discharges of South African Marcusenius species (Teleostei: Mormyridae) and their effectiveness as indicators of local species diversity
FIGURE 2. Electric organ discharge of a Marcusenius krameri with the positive peak amplitude normalized to 1 V, as an example for showing the characters analysed and their definitions. EOD shown was field-recorded from male specimen Mogol27 (ZSM 39535(7) from Mokolo River).
FIGURE 1. A in Electric organ discharges of South African Marcusenius species (Teleostei: Mormyridae) and their effectiveness as indicators of local species diversity
FIGURE 1. A, partial geography of southern Africa showing localities where fish were sampled. B, partial geography of South Africa. Locality 1, Tana River, Kenya, Marcusenius devosi. Locality 2, Mokolo River, M. krameri. Locality 3, Sabie River, M. pongolensis. Locality 4, Kosi Bay area, Kosi River system, M. pongolensis. Locality 5, Pongola River, M. pongolensis. Locality 6, Type locality for M. pongolensis. Locality 7, Mhlatuze River, M. caudisquamatus.
FIGURE 3 in Electric organ discharges of South African Marcusenius species (Teleostei: Mormyridae) and their effectiveness as indicators of local species diversity
FIGURE 3. Electric organ discharges (EOD) of a male bulldog (below) and a female specimen (above) in each panel. Abscissa, time bar is 2 ms for all panels, ordinate, amplitude (V). EODs are normalised to the same positive peak amplitude from baseline = 1 V. Kosi Bay, Marcusenius pongolensis from the Kosi System, specimens PM09A90 (female, SL 10.9 cm) and PM09A91 (male, SL 16.2 cm), SAIAB 88637(2). Sabie River, M. pongolensis, specimens 8Sabi (male, SL 13.4 cm) and 9Sabi (female, SL 12.3 cm), both SAIAB 54446(11). Pongola River, M. pongolensis, specimens Pon02 (male, SL 18 cm), SAIAB 79148(5), and Pon09 (female, SL 15.5 cm), ZSM 35087(5). Witrivier River, M. pongolensis, specimen Wit 02, male, SL 18 cm, and Wit 01, female, SL 9.9 cm, both SAIAB 88846(2). Tana River, M. devosi, specimens SAIAB 79139(14), Ta32na, male, SL 10.1 cm, and ZSM 35092, Ta11na, female, SL 11.2 cm. Mhlatuze River, M. caudisquamatus, specimen PM09A242, male, SL 17.5 cm, and PM09A238, female, SL 10.2 cm, both SAIAB 191225(6). Mokolo River, M. krameri, specimen Mogol27, ZSM 39535(7), male, SL 9 cm, and Mogol29, SAIAB 88888(15), female, SL 9.7 cm.
A New Concept of Air Cooling and Heat Pipe for Electric Vehicles in Fast Discharging
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A Proof of Concept Study of Electrical Discharge Produced Nitric Oxide for Inhalation
ClinicalTrials.gov study NCT02305550. IPD Sharing: Not stated. Countries: 1. Publications: 2.
Electric field distribution of the discharge gap at the open end before plasma breakdown.
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Figure 8 from: Sullivan J, Zuanon J, Cox Fernandes C (2013) Two new species and a new subgenus of toothed Brachyhypopomus electric knifefishes (Gymnotiformes, Hypopomidae) from the central Amazon and considerations pertaining to the evolution of a monophasic electric organ discharge. ZooKeys 327: 1-34. https://doi.org/10.3897/zookeys.327.5427
Figure 8 - Paratypes of Brachyhypopomus bennetti sp. n. (top 3) and Brachyhypopomus walteri sp. n. (bottom 3) showing transparency of electric organ to transmitted light and comparative depth of the electric organ in the two species.
Figure 7 from: Sullivan J, Zuanon J, Cox Fernandes C (2013) Two new species and a new subgenus of toothed Brachyhypopomus electric knifefishes (Gymnotiformes, Hypopomidae) from the central Amazon and considerations pertaining to the evolution of a monophasic electric organ discharge. ZooKeys 327: 1-34. https://doi.org/10.3897/zookeys.327.5427
Figure 7 - Paratypes of Brachyhypopomus bennetti. A Paratype tag no. 93-214 from INPA 39581 (TL 175 mm, LEA 150 mm), female, Lago Janauari, Amazonas, Brazil B Paratype tag no. 93-137, INPA 8940 (TL 190 mm, LEA 167 mm), Lago Janauari. Preserved whole specimens shown above close-up views of specimens immediately post-mortem. Scale bars equal 1 cm.
Figure 6 from: Sullivan J, Zuanon J, Cox Fernandes C (2013) Two new species and a new subgenus of toothed Brachyhypopomus electric knifefishes (Gymnotiformes, Hypopomidae) from the central Amazon and considerations pertaining to the evolution of a monophasic electric organ discharge. ZooKeys 327: 1-34. https://doi.org/10.3897/zookeys.327.5427
Figure 6 - Holotype of Brachyhypopomus bennetti, INPA 39560 (TL 215 mm, LEA 171 mm), female, Paraná do Paracuúba, Amazonas, Brazil. Preserved whole specimen shown above close-up view of specimen immediately post-mortem. Scale bars equals 1 cm.
Figure 5 from: Sullivan J, Zuanon J, Cox Fernandes C (2013) Two new species and a new subgenus of toothed Brachyhypopomus electric knifefishes (Gymnotiformes, Hypopomidae) from the central Amazon and considerations pertaining to the evolution of a monophasic electric organ discharge. ZooKeys 327: 1-34. https://doi.org/10.3897/zookeys.327.5427
Figure 5 - Distribution of examined specimens of Brachyhypopomus walteri sp. n. (blue circles) and Brachyhypopomus bennetti sp. n. (red diamonds). Common holotype locality for both species indicated by yellow star.
Figure 4 from: Sullivan J, Zuanon J, Cox Fernandes C (2013) Two new species and a new subgenus of toothed Brachyhypopomus electric knifefishes (Gymnotiformes, Hypopomidae) from the central Amazon and considerations pertaining to the evolution of a monophasic electric organ discharge. ZooKeys 327: 1-34. https://doi.org/10.3897/zookeys.327.5427
Figure 4 - Paratypes of Brachyhypopomus walteri. A Paratype tag no. 93-55 from INPA 8880 (TL 164 mm, LEA 118 mm), sex undetermined, Ilha da Marchantaria, Rio Solimões, Amazonas, Brazil B Paratype tag no. 93-114 from INPA 8939 (TL 155 mm, LEA 125 mm), female, collected with holotype. Preserved whole specimens shown above close-up views of specimens immediately post-mortem. Scale bars equal 1 cm.
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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.