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139 results for “manganese”
Hubbard Brook Experimental Forest: Watershed 3 Manganese Transects
An area of Watershed 3 in Hubbard Brook Experimental Forest containing a seep, a spring and a swale was found to contain hot spots for soil manganese. The source of the Mn was thought to be groundwater discharge, and this area was studied intensively due to its implications for disproportionately affecting headwater stream chemistry. Soils were sampled along a grid pattern; O and B horizon samples were collected and analyzed for dithionite-extractable (total secondary) Mn & Fe, pH, total organic C and N, moisture content, and Cr oxidation potential (indicative of Mn oxide reactivity). The data were spatially interpolated to identify areas of Mn enrichment and other chemical variables related to topography and groundwater discharge. Two hot spots for soil Mn were found: one in a poorly drained, flowing spring and one in a moderately well-drained swale, which had similarly high Mn (6000-9000 mg kg-1 soil). However, the spring soils had high Cr oxidation potential while the nearby swale soils did not, indicating a difference in Mn reactivity. A third location in the study area was a poorly drained seep with water that was not visibly flowing, and these soils had lower quantities of Mn and low Cr oxidation potential.
Porewater concentrations of nitrate, nitrite, ammonium, manganese, and iron in sediments from the Atacama and Kermadec Trench regions
<p>The file presents data collected during cruises on <em>RV </em>Tangaroa<em> </em>(TAN1711, 2017) to the Kermadec Trench and <em>RV</em> Sonne (SO261, 2018) to the Atacama Trench. Sample collection and analyses are described, and results are discussed in Thamdrup, B. et al. Anammox bacteria drive fixed nitrogen loss in hadal trench sediments<strong>. </strong>Proc. Natl. Acad. Sci. USA, in press, doi: 10.1073/pnas.2104529118.</p>
Preliminary neutron data for cryotrapping peroxide in the active site of human mitochondrial manganese superoxide dismutase crystals for neutron diffraction
<p>The files are preliminary refined neutron coordinates and data on a cryotrapped peroxo species at the active site of human manganese superoxide dismutase crystals.</p>
Figure 5 in Analysis of the spatial organization of Vallonia pulchella (Muller, 1774) ecological niche in Technosols (Nikopol manganese ore basin, Ukraine)
Figure 5. Correlation between the environment variables and the axes selected as a result of FANTER analysis. A – marginality axes 1 and 2; B - specialization axes 44 and 45. Type_1 - type_6 - the proportion of physiognomic types of vegetation cover; temp_05 - top soil temperature (3-5 cm) May 3, 2012; temp_06 - temperature of the top layer of soil (3-5 cm) June 20, 2012; Tm - thermoclimate; Kn - continentality; Om - ombroclimate; Kr - cryoclimate; Hd - humidity; Tr - salt regime; Nt - nitrogen nutrition; Rc - acidity; Lc - lighting; St - stepants; Pr - pratants; Humus – humus comtant; EC – soil electrical conductivity, imp_05 - imp_50 - soil mechanical impedance at a depth of 5, ..., 50 cm, Agr_10 - Agr_025 - aggregate fractions of size> 10, ..., <0.25 mm, g_Vlag - hygroscopic humidity,%; Compact – soil shrinkage, in %.
Figure 8 in Analysis of the spatial organization of Vallonia pulchella (Muller, 1774) ecological niche in Technosols (Nikopol manganese ore basin, Ukraine)
Figure 8. Spatial distribution of the habitat preference index (HSI) for Vallonia pulchella within the experimental site on red-brown clays based on ENFA (top) and MADIFA (bottom) procedures. The arrow indicates the zones of greatest difference.
Figure 4 in Analysis of the spatial organization of Vallonia pulchella (Muller, 1774) ecological niche in Technosols (Nikopol manganese ore basin, Ukraine)
Figure 4. An histogram of the available resource units. Resource allocation (black bars) and an histogram of the used resource units distribution of resource use (gray bars) of Vallonia pulchella. Type_1 - type_6 - the proportion of physiognomic types of vegetation cover; temp_05 - top soil temperature (3-5 cm) May 3, 2012; temp_06 - temperature of the top layer of soil (3-5 cm) June 20, 2012; Tm - thermoclimate; Kn - continentality; Om - ombroclimate; Kr - cryoclimate; Hd - humidity; Tr - salt regime; Nt - nitrogen nutrition; Rc - acidity; Lc - lighting; St - stepants; Pr - pratants; Humus – humus comtant; EC – soil electrical conductivity, imp_05 - imp_50 - soil mechanical impedance at a depth of 5, ..., 50 cm, Agr_10 - Agr_025 - aggregate fractions of size> 10, ..., <0.25 mm, g_Vlag - hygroscopic humidity,%; Compact – soil shrinkage, in %.
Figure 2 in Analysis of the spatial organization of Vallonia pulchella (Muller, 1774) ecological niche in Technosols (Nikopol manganese ore basin, Ukraine)
Figure 2. Soil surface and physiognomic characteristics of the vegetation cover. 1 – type_1 (Bromus sguarrosus L.); 2 – type_2 (Seseli tortuosum L.); 3 – type_3 (Lactuca tatarica (L.) C.A. Mey.); 4 – type_4 (Medicago sativa L.); 5 – type_5 (dead plant residue); 6 – type_6 (open soil cover).
Figure 1 in Analysis of the spatial organization of Vallonia pulchella (Muller, 1774) ecological niche in Technosols (Nikopol manganese ore basin, Ukraine)
Figure 1. Research Centre of the Dnipro Agrarian and Economic University in Pokrov (Ukraine). A – satellite image of the study area (1 – reclaimed land; 2 – mining quarry); B – technosoils profile; C – quarry panorama view.
Authigenic rhenium, manganese and opal concentrations in the Deep South Atlantic from 370 to 450 ka
<p>This data reports measured concentrations of the trace elements rhenium and manganese, the major component biogenic opal and the estimated fraction of rhenium and manganese that are authigenic in nature (aRe and aMn) from the sediment record of Ocean Drilling Program Site 1094 in Atlantic sector of the Southern Ocean for the time period spanning 370 and 450 thousands years.</p>
Manganese Limitation of Phytoplankton Physiology and Productivity in the Southern Ocean
<p>Output to accompany:</p> <p>Manganese Limitation of Phytoplankton Physiology and Productivity in the Southern Ocean</p> <p><a href="https://agupubs.onlinelibrary.wiley.com/action/doSearch?ContribAuthorRaw=Hawco%2C+Nicholas+J">Nicholas J. Hawco*</a>, <a href="https://agupubs.onlinelibrary.wiley.com/action/doSearch?ContribAuthorRaw=Tagliabue%2C+Alessandro">Alessandro Tagliabue*</a>, <a href="https://agupubs.onlinelibrary.wiley.com/action/doSearch?ContribAuthorRaw=Twining%2C+Benjamin+S">Benjamin S. Twining</a></p> <p>* joint first authors</p> <p>First published: 25 October 2022</p> <p><a href="https://doi.org/10.1029/2022GB007382">https://doi.org/10.1029/2022GB007382</a></p> <p>Netcdf file details:<br> <br> BYONIC8R1 = standard run<br> !<br> BYONIC6R1 = as BYONIC8R1 but no zn-mn interaction<br> BYONIC3R1 = as BYONIC8R1 but no Mn limitation<br> BYONIC7R1 = as BYONIC8R1 but lower mnchl<br> BYONIC2R1 = as BYONIC8R1 but higher mnchl<br> BYONIC5R1 = as BYONIC8R1 but w/ QZn feedback<br> BYONIC12R1 = BYONIC8R1 LGM<br> BYONIC10R1 = no Mn lim LGM</p> <p>All on native ORCA2 NEMO grid</p>
Manganese Enhanced Magnetic Resonance Imaging reveals light-induced brain asymmetry in embryo
<p>The idea that sensory stimulation to the embryo (in utero or in ovo) may be crucial for brain development is widespread. Unfortunately, up to now evidence was only indirect because mapping of embryonic brain activity in vivo is challenging. Here we applied for the first time Manganese Enhanced Magnetic Resonance Imaging (MEMRI), a functional imaging method, to the eggs of domestic chicks. We revealed both spontaneous and light-induced brain asymmetry by comparing embryonic brain activity in vivo of eggs that were stimulated by light or maintained in the darkness. Our protocol paves the way to investigation of the effects of a variety of sensory stimulations on brain activity in embryo.</p>
Manganese Enhanced Magnetic Resonance Imaging reveals light-induced brain asymmetry in embryo
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Photodissociation of permanganate (MnO4-) produces the manganese dioxide anion (MnO2-) in an excited triplet state
<p>The photoelectron spectra of MnO4-, including thermionic emission and photodetachment of the photodissociation product MnO2-, recorded at photon energies of 2.53, 2.48 and 2.43 eV, and the electron action spectrum recorded at photon energies between 2.81 and 2.06 eV. </p>
Original data for publications: Synthesis, Characterization, and Crystal Structures of Two New Manganese Aceto EMIM Ionic Compounds with Chains of Mn2+ Ions Coordinated Exclusively by Acetate, and: Fe4(OAc)10[EMIM]2: Novel Iron-Based Acetate EMIM Ionic Compound
<p>Origianl data for publications (Part of University of Geneva only):</p> <p>Synthesis, Characterization, and Crystal Structures of Two New Manganese Aceto EMIM Ionic Compounds with Chains of Mn2+ Ions Coordinated Exclusively by Acetate<br> Przemyslaw Dera, Edward Bruffey III, Gregory J. Finkelstein, Colleen Kelly, Angelina Gigante, Hans Hagemann, and Godwin Severa<br> ACS Omega 2020, 5, 25, 15592-15600</p> <p>Fe4(OAc)10[EMIM]2: Novel Iron-Based Acetate EMIM Ionic Compound<br> Godwin Severa, Edward Bruffey, Phuong Q. H. Nguyen, Angelina Gigante, Noemi Leick, Colleen Kelly, Gregory J. Finkelstein, Hans Hagemann, Thomas Gennett, Richard E. Rocheleau, and Przemyslaw Dera,<br> ACS Omega 2021, 6, 31907-31918.</p> <p> </p> <p> </p>
Process data for development of a digital material shadow for the press hardening route of medium manganese steel
<p>Press-hardened ultra-high strength steel parts are widely used in the automotive sector for their lightweight and safety advantages. Medium-Manganese Steels (MMnS) are being explored as an alternative to boron-manganese steels due to their high strength and ductility after quenching, achieved at lower annealing temperatures thus reducing energy usage and carbon emissions. However, industrial adoption of MMnS is hindered by challenging processing requirements, e.g. in cold-rolling and press hardening. To expedite and improve the process development, data-driven decisions based on process parameters hold promise. Establishing a link between process data and the final produced part necessitates the development of a framework for a Digital Material Shadow (DMS). This paper investigates the development of a DMS framework for the cold rolling and press hardening process chain. In conjunction with conventional data acquisition methods employed for cold rolling, novel data acquisition techniques are introduced specifically tailored for press hardening, ensuring the comprehensive availability of relevant data. Moreover, a data pipeline is implemented to enable automatic processing, visualization, and analysis of process data. To facilitate seamless data linkage across processes in the DMS, an ID-system is introduced. Finally, the developed framework’s validity is demonstrated by creating a DMS for press-hardened MMnS parts, showcasing its potential for practical applications.</p>
Figure 7 in Analysis of the spatial organization of Vallonia pulchella (Muller, 1774) ecological niche in Technosols (Nikopol manganese ore basin, Ukraine)
Figure 7. Results of MADIFA-mapping of Vallonia pulchella ecological niche.
A spectroscopic and photometric investigation of the mercury-manganese star KIC 6128830
<p>MESA inlists associated with <a href="https://ui.adsabs.harvard.edu/#abs/2018MNRAS.474.2467H/abstract">Hümerich et al. (2018)</a>. MESA version 8677.</p> <p>Publication DOI: <a href="https://doi.org/10.1093/mnras/stx2974">10.1093/mnras/stx2974</a></p>
Process controlling iron-manganese regulation of the Southern Ocean biological carbon pump
<p>Netcdf output files at the end of 100-year run Fe-Mn co-limitation model experiments on the ORCA2 grid, as described and discussed in Anugerahanti, et al., in<em> Process controlling iron-manganese regulation of the Southern Ocean biological carbon pump,</em> Philosophical Transactions of the Royal Society A, 2022</p>
Spectroscopic Data for Thallium Sorbed to Manganese Oxides
<p>This dataset includes X-ray diffraction (XRD), Raman spectroscopy, and X-ray absorption near edge structure (XANES) data from Phillips et al. (2023)- "The role of manganese oxide mineralogy in thallium isotopic fractionation upon sorption". This project aimed to determine the degree of Thallium (Tl) isotope fractionation upon sorption to Mn oxide minerals triclinic birnessite and todorokite. The XRD and Raman spectra indicate structural changes in the mineralogy of triclinic birnessite upon Tl sorption. The XANES spectra show that Tl and Mn oxidation states remain relatively constant before and after Tl sorption, indicating that no Tl oxidation or Mn reduction occurs during Tl sorption to triclinic birnessite or todorokite. </p>
Manganese in Women With Encephalopathy
ClinicalTrials.gov study NCT00985010. IPD Sharing: Not stated. Countries: 1. Publications: 1.
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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.