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  • 2020-2024  (62)
  • 1995-1999  (231)
Collection
Keywords
Publisher
Language
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Year
  • 1
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    Unknown
    Cis/Trans Reactivity:  Epoxy−Amine Systems (1998)
    American Chemical Society
    Details
    Publication Date: 1998-07-01
    Print ISSN: 0024-9297
    Electronic ISSN: 1520-5835
    Topics: Chemistry and Pharmacology , Physics
    Published by American Chemical Society
    Location Call Number Expected Availability
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    PAPER CURRENT
  • 2
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    Chlorophyll a in the northern Patagonian shelf (SW South Atlantic) during austral spring and summer (2022)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: The species composition and structure (e.g. abundance and biomass) of protistan plankton (cell size 〉 5 µm) and in situ chorophyll a were assessed in a shallow (〈50 m depth) inner shelf area of the Argentine Shelf called El Rincón (38º-41°S). Surface water samples (5 m depth) for plankton quantification) were taken with Niskin bottles during four oceanographic cruises (two in early austral spring and two in late austral summer- early fall), onboard the vessel B. Houssay accounting for a total of 36 sampling stations. These samples were analyzed under optical microscopy following the inverted microscope technique with sedimentation chambers. Cells enumeration and identification was made up to species, genus or family level, which were afterward categorized in taxonomical groups: diatoms, dinoflagellates, coccolithophores and nanoflagellates. The studied area supports important fishes of commercial interest, therefore plankton biodiversity records are neccesary to understand possible shifts at the population and community levels that might have cascading effects on marine ecosystems' productivity.
    Keywords: Argentine Continental Shelf; BH0313_02; BH0313_03; BH0313_04; BH0313_06; BH0313_14; BH0313_18; BH0313_20; BH0313_27; BH0416_01; BH0416_02; BH0416_03; BH0416_04; BH0416_05; BH0416_06; BH0915_01; BH0915_02; BH0915_03; BH0915_05; BH0915_06; BH0915_07; BH0915_08; BH0915_09; BH0915_10; BH0915_11; BH0915_12; BH0915_13; BH0915_14; BH0915_17; BH0915_18; BH0915_21; BH0915_22; BH0915_23; BH0916_01; BH0916_02; BH0916_23; BH0916_24; BH0916_B1; BH0916_B2; BH0916_B3; Bottle, Niskin; Chlorophyll a; Coccolithophores; Date/Time of event; diatoms; Dinoflagellates; Dr. Bernardo Houssay; Event label; IADO-PNA 0313; IADO-PNA 0416; IADO-PNA 0915; IADO-PNA 0916; inner shelf; Latitude of event; Longitude of event; MULT; Multiple investigations; NIS; optical microscopy; Patagonian shelf, Argentina; Phytoplankton
    Type: Dataset
    Format: text/tab-separated-values, 39 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 3
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    Nano- and microplankton and chlorophyll a from B. Houssay cruises to the northern Patagonian shelf (SW South Atlantic) during austral spring and summer (2022)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: The species composition and structure (e.g. abundance and biomass) of protistan plankton (cell size 〉 5 µm) and in situ chorophyll a were assessed in a shallow (〈50 m depth) inner shelf area of the Argentine Shelf called El Rincón (38º-41°S). Surface water samples (5 m depth) for plankton quantification were taken with Niskin bottles during four oceanographic cruises (two in early austral spring and two in late austral summer- early fall), onboard the vessel B. Houssay accounting for a total of 36 sampling stations. These samples were analyzed under optical microscopy following the inverted microscope technique with sedimentation chambers. Cells enumeration and identification was made up to species, genus or family level, which were afterward categorized in taxonomical groups: diatoms, dinoflagellates, coccolithophores and nanoflagellates. The studied area supports important fishes of commercial interest, therefore plankton biodiversity records are neccesary to understand possible shifts at the population and community levels that might have cascading effects on marine ecosystems' productivity.
    Keywords: Coccolithophores; diatoms; Dinoflagellates; inner shelf; optical microscopy; Phytoplankton
    Type: Dataset
    Format: application/zip, 2 datasets
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 4
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    Nano- and microplankton in the northern Patagonian shelf (SW South Atlantic) during austral spring and summer (2022)
    PANGAEA
    Details
    Publication Date: 2023-06-19
    Description: The species composition and structure (e.g. abundance and biomass) of protistan plankton (cell size 〉 5 µm) and in situ chorophyll a were assessed in a shallow (〈50 m depth) inner shelf area of the Argentine Shelf called El Rincón (38º-41°S). Surface water samples (5 m depth) for plankton quantification were taken with Niskin bottles during four oceanographic cruises (two in early austral spring and two in late austral summer- early fall), onboard the vessel B. Houssay accounting for a total of 36 sampling stations. These samples were analyzed under optical microscopy following the inverted microscope technique with sedimentation chambers. Cells enumeration and identification was made up to species, genus or family level, which were afterward categorized in taxonomical groups: diatoms, dinoflagellates, coccolithophores and nanoflagellates. Carbon content was calculated following the method of Menden-Deuer et al. (2000) in which biovolume was estimated assigning a geometrical shape to each species (Hillebrand et al., 1999). The biomass is the result of multiplying the carbon content of a species by its abundance in the sample. The studied area supports important fishes of commercial interest, therefore plankton biodiversity records are neccesary to understand possible shifts at the population and community levels that might have cascading effects on marine ecosystems' productivity.
    Keywords: Abundance; Argentine Continental Shelf; BH0313_02; BH0313_03; BH0313_04; BH0313_06; BH0313_14; BH0313_18; BH0313_20; BH0313_27; BH0416_01; BH0416_02; BH0416_03; BH0416_04; BH0416_05; BH0416_06; BH0915_01; BH0915_02; BH0915_03; BH0915_05; BH0915_06; BH0915_07; BH0915_08; BH0915_09; BH0915_10; BH0915_11; BH0915_12; BH0915_13; BH0915_14; BH0915_16; BH0915_17; BH0915_18; BH0915_21; BH0915_22; BH0915_23; BH0916_01; BH0916_02; BH0916_03; BH0916_05; BH0916_07; BH0916_11; BH0916_12; BH0916_15; BH0916_16; BH0916_19; BH0916_20; BH0916_21; BH0916_23; BH0916_24; BH0916_B1; BH0916_B2; BH0916_B3; Biomass as carbon per volume; Bottle, Niskin; Calculated; Carbon per cell; Coccolithophores; Date/Time of event; DEPTH, water; diatoms; Dinoflagellates; Dr. Bernardo Houssay; Event label; IADO-PNA 0313; IADO-PNA 0416; IADO-PNA 0915; IADO-PNA 0916; inner shelf; Latitude of event; Light microscopy (Utermöhl 1958); Longitude of event; MULT; Multiple investigations; NIS; optical microscopy; Patagonian shelf, Argentina; Phytoplankton; Phytoplankton, cell biovolume; Taxa; Uniform resource locator/link to reference
    Type: Dataset
    Format: text/tab-separated-values, 16722 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 5
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    Air and ground temperatures at the Crater Lake site during the experiment period (2010) (2020)
    PANGAEA
    Details
    Publication Date: 2023-07-19
    Description: Climate induced warming of permafrost soils is a global phenomenon, with regional and site-specific variations, which are not fully understood. In this context, a 2D automated electrical resistivity tomography (A-ERT) system was installed for the first time in Antarctica at Deception Island, associated to the existing Crater Lake site of the Circumpolar Active Layer Monitoring Network (CALM-S). This set-up aims to I) monitor subsurface freezing and thawing processes on a daily and seasonal basis and to map the spatial and temporal variability of thaw depth, and to II) study the impact of short-lived extreme meteorological events on active layer dynamics. In addition, the feasibility of installing and running autonomous ERT monitoring stations in remote and extreme environments such as Antarctica was evaluated for the first time. Measurements were repeated at 4-hour intervals during a full year, enabling the detection of seasonal trends, as well as short-lived resistivity changes reflecting individual meteorological events. The latter is important to distinguish between (1) long-term climatic trends and (2) the impact of anomalous seasons on the ground thermal regime. The A-ERT.txt file contains all ERT surveys which were performed using Wenner electrode configuration. 20 copper plates, which are connected by buried cables to the active boxes, with an electrode spacing of 0.5 m were used in this experiment. This setup yields 56 individual data points for each monitoring data set at six data levels. All data were saved in the Res2Dinv format. The temperature. xlsx file contains air and ground temperatures data during the experiment period. The Air temperature was measured at 160 cm above the surface and ground temperatures in the shallow borehole S3,3 were measured with ibutton-sensors at depths 2.5, 5, 10, 20, 40, 80 and 160 cm.
    Keywords: Active-layer; Antarctica; CALM-S_Crater-lake; Circumpolar Active Layer Monitoring Network; DATE/TIME; Deception Island, Antarctica; Electrical Resistivity Tomography; iButton sensor; MULT; Multiple investigations; Permafrost; Temperature, air; Temperature, ground
    Type: Dataset
    Format: text/tab-separated-values, 2680 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 6
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    2D automated electrical resistivity tomography (A-ERT) at Deception Island, Antarctica (2020)
    PANGAEA
    Details
    Publication Date: 2023-07-19
    Description: Climate induced warming of permafrost soils is a global phenomenon, with regional and site-specific variations, which are not fully understood. In this context, a 2D automated electrical resistivity tomography (A-ERT) system was installed for the first time in Antarctica at Deception Island, associated to the existing Crater Lake site of the Circumpolar Active Layer Monitoring Network (CALM-S). This set-up aims to I) monitor subsurface freezing and thawing processes on a daily and seasonal basis and to map the spatial and temporal variability of thaw depth, and to II) study the impact of short-lived extreme meteorological events on active layer dynamics. In addition, the feasibility of installing and running autonomous ERT monitoring stations in remote and extreme environments such as Antarctica was evaluated for the first time. Measurements were repeated at 4-hour intervals during a full year, enabling the detection of seasonal trends, as well as short-lived resistivity changes reflecting individual meteorological events. The latter is important to distinguish between (1) long-term climatic trends and (2) the impact of anomalous seasons on the ground thermal regime. The A-ERT.txt file contains all ERT surveys which were performed using Wenner electrode configuration. 20 copper plates, which are connected by buried cables to the active boxes, with an electrode spacing of 0.5 m were used in this experiment. This setup yields 56 individual data points for each monitoring data set at six data levels. All data were saved in the Res2Dinv format. The temperature. xlsx file contains air and ground temperatures data during the experiment period. The Air temperature was measured at 160 cm above the surface and ground temperatures in the shallow borehole S3,3 were measured with ibutton-sensors at depths 2.5, 5, 10, 20, 40, 80 and 160 cm.
    Keywords: Active-layer; Antarctica; CALM-S_Crater-lake; Circumpolar Active Layer Monitoring Network; Deception Island, Antarctica; Electrical Resistivity Tomography; MULT; Multiple investigations; Permafrost
    Type: Dataset
    Format: application/zip, 721.9 kBytes
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    DATA PANGAEA
  • 7
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    Physical oceanography, CFC-12, SF6, pH, and alkalinity measured on water bottle samples during cruise SUBPOLAR08 with RV Thalassa (2020)
    PANGAEA
    Details
    Publication Date: 2023-09-12
    Description: Temperature, salinity, oxygen data, anthropogenic tracers, pH and alkalinity measured on the RV Thalassa Cruise SUBPOLAR08 St. John's - Brest 08/25 - 09/15/2008 Chief Scientist: Dagmar Kieke Region: Subpolar North Atlantic
    Keywords: Alkalinity, total; anthropogenic tracers; Bottle number; Calculated; Capillary-chromatographic system with electron capture detector; CTD, SEA-BIRD SBE 9 plus, SBE 11 plus deck unit; CTD/Rosette; CTD-RO; DATE/TIME; Density, sigma-theta (0); DEPTH, water; Der Nordatlantik als Teil des Erdsystems; ELEVATION; Event label; Freon-12 (dichlorodifluoromethane); LATITUDE; LONGITUDE; Nordatlantik; Oxygen; Oxygen, Winkler (Culberson, 1991, WOCE Report 68/91); Oxygen sensor, SBE 43; pH; Potentiometric titration; Pressure, water; Profile; Salinity; Spectrophotometry (Clayton & Byrne, 1993); SPOL08_0-1; SPOL08_10-1; SPOL08_1-1; SPOL08_11-1; SPOL08_12-1; SPOL08_13-1; SPOL08_14-1; SPOL08_16-1; SPOL08_17-1; SPOL08_18-1; SPOL08_19-1; SPOL08_20-1; SPOL08_2-1; SPOL08_21-1; SPOL08_22-1; SPOL08_23-1; SPOL08_24-1; SPOL08_25-1; SPOL08_26-1; SPOL08_27-1; SPOL08_28-1; SPOL08_29-1; SPOL08_30-1; SPOL08_3-1; SPOL08_31-1; SPOL08_32-1; SPOL08_33-1; SPOL08_34-1; SPOL08_35-1; SPOL08_36-1; SPOL08_37-1; SPOL08_38-1; SPOL08_39-1; SPOL08_40-1; SPOL08_4-1; SPOL08_41-1; SPOL08_42-1; SPOL08_43-1; SPOL08_44-1; SPOL08_45-1; SPOL08_46-1; SPOL08_49-1; SPOL08_50-1; SPOL08_51-1; SPOL08_52-1; SPOL08_53-1; SPOL08_54-1; SPOL08_55-1; SPOL08_56-1; SPOL08_57-1; SPOL08_58-1; SPOL08_59-1; SPOL08_60-1; SPOL08_6-1; SPOL08_61-1; SPOL08_62-1; SPOL08_63-1; SPOL08_64-1; SPOL08_65-1; SPOL08_66-1; SPOL08_67-1; SPOL08_68-1; SPOL08_69-1; SPOL08_70-1; SPOL08_7-1; SPOL08_74-1; SPOL08_8-1; SPOL08_9-1; Station label; SUBPOLAR08; subpolar North Atlantic; Sulfur hexafluoride, SF6; Temperature, water; Temperature, water, potential; Thalassa; Time in days
    Type: Dataset
    Format: text/tab-separated-values, 17881 data points
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    DATA PANGAEA
  • 8
    Electronic Resource
    Electronic Resource
    Reactions of Primary Amines with (.eta.5-Pentadienyl)- and (.eta.5-Methylpentadienyl)tricarbonylmanganese Complexes. Synthesis, Characterization, and Structural Studies (1995)
    s.l. : American Chemical Society
    Organometallics 14 (1995), S. 1044-1052 
    Details
    ISSN: 1520-6041
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/om00002a060
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    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    BF3.cntdot.Et2O-Promoted Allylation Reactions of Allyl(cyclopentadienyl)iron(II) Dicarbonyl Complexes with Carbonyl Compounds (1995)
    s.l. : American Chemical Society
    Organometallics 14 (1995), S. 4697-4709 
    Details
    ISSN: 1520-6041
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/om00010a037
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    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Transcription and weak expression of HLA-DRB6: a gene with anomalies in exon 1 and other regions. (1998)
    Springer
    Immunogenetics 48 (1998), S. 16-21 
    Details
    ISSN: 1432-1211
    Keywords: Key words HLA ; MHC ; DRB6 ; LTR ; Retrovirus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract  HLA-DRB6 is one of the human major histocompatibility complex (MHC) genes present in DR1, DR2, and DR10 haplotypes (approximately 26% of individuals). It shows several anomalies in human and non-human primates, including exon 2 stop codons (non-randomly grouped between codons 74 and 94) and a promoter region, and an exon 1 coming from an inserted retrovirus. It has been shown that not only chimpanzee but also human Mhc-DRB6 lack the usual 3’ untranslated (UT) polyadenylation signal, and in the present work it was found that the human DRB6 gene coming from an HLA-DR2 haplotype is effectively transcribed after transfection in mouse L cells, and that HLA-DRB6 molecules may be expressed on the cell surface. DRB6 transcription level is remarkably lower in human than in chimpanzee. Moreover, their exons 1 (both taken from the 3’LTR region of a mammary tumor retrovirus) are also different; this shows that these viral insertions may be an important mechanism for different evolutionary changes in orthologous genes of different species. The pathways by which DRB6 molecules may be expressed on the membrane are unclear but other examples of truncated protein expression have also been described, even within the human major histocompatibility complex (i. e., in HLA-G). Finally, the presence of mature HLA-DRB6 mRNA molecules supports the notion that splicing may take place even in the absence of a canonical 3’UT polyadenylation signal.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002510050395
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    Paper (German National Licenses)
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