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  • Wiley-Blackwell  (8,161)
  • PANGAEA  (6,406)
  • Nature Publishing Group  (3,487)
  • 2020-2024  (6,273)
  • 1995-1999
  • 1985-1989
  • 1980-1984  (11,781)
  • 2022  (6,273)
  • 1980  (11,781)
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  • 2020-2024  (6,273)
  • 1995-1999
  • 1985-1989
  • 1980-1984  (11,781)
  • 2020-2023  (5)
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  • 1
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    Manganese deposits (1980)
    PANGAEA
    In:  EPIC3Bremerhaven, PANGAEA
    Details
    Publication Date: 2016-02-20
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 2
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    Langfristige Veränderungen in der Verbreitung von Nordseefischen, untersucht durch Korrelations- und Varianzanalyse (1980)
    PANGAEA
    In:  EPIC3Berichte aus dem Institut für Meereskunde an der Christian-Albrechts-Dniversität Kiel. 76, Bremerhaven, PANGAEA, 150 p.
    Details
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 3
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    Zur Höhenänderung von Ostalpengletschern im Zeitraum 1969-1979 (1980)
    PANGAEA
    In:  EPIC3Bremerhaven, PANGAEA
    Details
    Publication Date: 2014-08-06
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 4
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    Begleitwort zur Karte des Hintereisferners 1979, 1:10.000 (1980)
    PANGAEA
    In:  EPIC3Bremerhaven, PANGAEA
    Details
    Publication Date: 2018-08-10
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 5
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    Figure 4 of Manheim et al. (1980) (1980)
    PANGAEA
    In:  EPIC3Bremerhaven, PANGAEA
    Details
    Publication Date: 2016-06-23
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 6
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    Frühe Kupfer-Verhüttung auf Helgoland (1980)
    PANGAEA
    In:  EPIC3Spektrum der Wissenschaft, Bremerhaven, PANGAEA, 2, pp. 10-20
    Details
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 7
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    Eineinhalb Jahrhunderte meteorologischer Beobachtungen in Bremen (1980)
    PANGAEA
    In:  EPIC3Abhandlungen des Naturwissenschaftlichen Vereins zu Bremen, Bremerhaven, PANGAEA, 39, pp. 185-261
    Details
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 8
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    Literature synthesis data of surface energy fluxes and environmental drivers from Arctic vegetation and glacier sites (2022)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: Despite the importance of surface energy budgets (SEBs) for land-climate interactions in the Arctic, uncertainties in their prediction persist. In situ observational data of SEB components - useful for research and model validation - are collected at relatively few sites across the terrestrial Arctic, and not all available datasets are readily interoperable. Furthermore, the terrestrial Arctic consists of a diversity of vegetation types, which are generally not well represented in land surface schemes of current Earth system models. This dataset describes the data generated in a literature synthesis, covering 358 study sites on vegetation or glacier (〉=60°N latitude), which contained surface energy budget observations. The literature synthesis comprised 148 publications searched on the ISI Web of Science Core Collection.
    Language: English
    Type: info:eu-repo/semantics/workingPaper
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  • 9
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    Effects of a brackish water inflow on peat pore water variables and methane-cycling microbial community abundances in a freshwater rewetted coastal fen. (2022)
    PANGAEA
    Details
    Publication Date: 2023-02-09
    Description: The rewetting of peatlands is a promising measure to mitigate greenhouse gas (GHG) emissions by preventing the further mineralization of the peat soil through aeration. In coastal peatland, the rewetting with brackish water can increase the GHG mitigation potential by the introduction of sulfate, a terminal electron acceptor (TEA). Sulfate is known to lower the CH4 production and thus, its emission by favoring the growth of sulfate-reducers, which outcompete methanogens for substrate. The data contain porewater variables such as pH, electrical conductivity (EC) and sulfate, chloride, dissolved CO2 and CH4 concentrations, as well as absolute abundances of methane- and sulfate-cycling microbial communities. The data were collected in spring and autumn 2019 after a storm surge with brackish water inflow in January 2019. Field sampling was conducted in the nature reserve Heiligensee and Hütelmoor in North-East Germany, close to the Southern Baltic Sea coast. We took peat cores using a Russian peat corer in addition to pore water diffusion samplers and plastic liners (length: 60cm; inner diameter 10 cm) at four locations along a transect from further inland towards the Baltic Sea. We wanted to compare the soil and pore water geochemistry as well as the microbial communities after the brackish water inflow to the common freshwater rewetting state. Pore water was extracted using pore water suction samplers in the lab and environmental variables were quantified with an ICP. Microbial samples were sampled from the peat core using sterile equipment. We used quantitative polymerase chain reaction (qPCR) to characterize pools of DNA and cDNA targeting total and putatively active bacteria and archaea. qPCR was performed on key functional genes of methane production (mcrA), aerobic methane oxidation (pmoA) and sulfate reduction (dsrB) in addition to the 16S rRNA gene for the absolute abundance of total prokaryotes. Furthermore, we retrieved soil plugs to determine the concentrations and isotopic signatures of dissolved trace gases (CO2/DIC and CH4) in the pore water.
    Language: English
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  • 10
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    Varve thickness of lateglacial ICDP core 5017-1-A-44 (2022)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: This dataset provides annually resolved microfacies data from ICDP core 5017-1-A, retrieved from the deep northern Dead Sea basin in 2010/11, for the last glacial-interglacial transition (ca. 14-13 ka BP). Sediments of the Lisan Formation were investigated between ~94.7 and 91.8 m sediment depth below lake floor (lithozone C2) by continuous thin section microscopy. Thin sections were prepared following the standard procedure by Brauer and Casanova (2001) that was adjusted for salty sediments. Thin section analyses were performed on overlapping large-scale thin sections using a Zeiss Axiolab pol microscope at magnifications of 50-400x. Microfacies analyses included varve counting and measurements of varve and sublayer thickness. The amount of varves in erosional gaps was interpolated and the position of mass flow deposits (MFD) is marked.
    Language: English
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  • 11
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    Physical properties of sea ice cores from L sites measured on leg 1 of the MOSAiC expedition (2022)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: We present sea ice temperature and salinity data from first-year ice (FYI) and second-year ice (SYI) relevant to the temporal development of sea ice permeability and brine drainage efficiency from the early growth phase in October 2019 to the onset of spring warming in May 2020. Our dataset was collected in the central Arctic Ocean during the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) Expedition in 2019 to 2020. MOSAiC was an international transpolar drift expedition in which the German icebreaker RV Polarstern anchored into an ice floe to gain new insights into Arctic climate over a full annual cycle. In October 2019, RV Polarstern moored to an ice floe in the Siberian sector of the Arctic at 85 degrees north and 137 degrees east to begin the drift towards the North Pole and the Fram Strait via the Transpolar Drift Stream. The data presented here were collected during the first three legs of the expedition, so all the coring activities took place on the same floe. The end dates of legs 1, 2, and 3 were 13 December, 24 February, and 4 June, respectively. The dataset contributed to a baseline study entitled, Deciphering the properties of different Arctic ice types during the growth phase of the MOSAiC floes: Implications for future studies. The study highlights downward directed gas pathways in FYI and SYI by inferring sea ice permeability and potential brine release from several time series of temperature and salinity measurements. The physical properties presented in this paper lay the foundation for subsequent analyses on actual gas contents measured in the ice cores, as well as air-ice and ice-ocean gas fluxes. Sea ice cores were collected with a Kovacs Mark II 9 cm diameter corer. To measure ice temperatures, about 4.5 cm deep holes were drilled into the core (intervals varied by site and leg) . The temperatures were measured by a digital thermometer within minutes after the cores were retrieved. The ice cores were placed into pre-labelled plastic sleeves sealed at the bottom end. The ice cores were transported to RV Polarstern and stored in a -20 degrees Celsius freezer. Each of the cores was sub-sampled, melted at room temperature, and processed for salinity within one or two days. The practical salinity was estimated by measuring the electrical conductivity and temperature of the melted samples using a WTW Cond 3151 salinometer equipped with a Tetra-Con 325 four-electrode conductivity cell. The practical salinity represents the the salinity estimated from the electrical conductivity of the solution. The dataset also contains derived variables, including sea ice density, brine volume fraction, and the Rayleigh number.
    Language: English
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  • 12
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    n-Fatty acid composition per sediment mass in a rapidly eroding permafrost cliff (2022)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: Organic carbon (OC) stored in Arctic permafrost represents one of Earth’s largest and most vulnerable terrestrial carbon pools. Amplified climate warming across the Arctic results in widespread permafrost thaw. Permafrost deposits exposed at river cliffs and coasts are particularly susceptible to thawing processes. Accelerating erosion of terrestrial permafrost along shorelines leads to increased transfer of organic matter (OM) to nearshore waters. However, the amount of terrestrial permafrost carbon and nitrogen as well as the OM quality in these deposits are still poorly quantified. Here, we characterise the sources and the quality of OM supplied to the Lena River at a rapidly eroding permafrost river shoreline cliff in the eastern part of the delta (Sobo-Sise Island). Our multi-proxy approach captures bulk elemental, molecular geochemical and carbon isotopic analyses of late Pleistocene Yedoma permafrost and Holocene cover deposits, discontinuously spanning the last ~52 ka. We show that the ancient permafrost exposed in the Sobo-Sise cliff has a high organic carbon content (mean of about 5 wt%).We found that the OM quality, which we define as the intrinsic potential to further transformation, decomposition, and mineralization, is also high as inferred by the lipid biomarker inventory. The oldest sediments stem from Marine Isotope Stage (MIS) 3 interstadial deposits (dated to 52 to 28 cal kyr BP) and is overlaid by Last Glacial MIS 2 (dated to 28 to 15 cal ka BP) and Holocene MIS 1 (dated to 7–0 cal ka BP) deposits. The relatively high average chain length (ACL) index of n-alkanes along the cliff profile indicates a predominant contribution of vascular plants to the OM composition. The elevated ratio of iso and anteiso-branched FAs relative to long chain (C ≥ 20) n-FAs in the interstadial MIS 3 and the interglacial MIS 1 deposits, suggests stronger microbial activity and consequently higher input of bacterial biomass during these climatically warmer periods. The overall high carbon preference index (CPI) and higher plant fatty acid (HPFA) values as well as high C / N ratios point to a good quality of the preserved OM and thus to a high potential of the OM for decomposition upon thaw. A decrease of HPFA values downwards along the profile probably indicates a relatively stronger OM decomposition in the oldest (MIS 3) deposits of the cliff.
    Language: English
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  • 13
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    Physical properties of sea ice cores from site MCS_FYI measured on legs 1 to 3 of the MOSAiC expedition (2022)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: We present sea ice temperature and salinity data from first-year ice (FYI) and second-year ice (SYI) relevant to the temporal development of sea ice permeability and brine drainage efficiency from the early growth phase in October 2019 to the onset of spring warming in May 2020. Our dataset was collected in the central Arctic Ocean during the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) Expedition in 2019 to 2020. MOSAiC was an international transpolar drift expedition in which the German icebreaker RV Polarstern anchored into an ice floe to gain new insights into Arctic climate over a full annual cycle. In October 2019, RV Polarstern moored to an ice floe in the Siberian sector of the Arctic at 85 degrees north and 137 degrees east to begin the drift towards the North Pole and the Fram Strait via the Transpolar Drift Stream. The data presented here were collected during the first three legs of the expedition, so all the coring activities took place on the same floe. The end dates of legs 1, 2, and 3 were 13 December, 24 February, and 4 June, respectively. The dataset contributed to a baseline study entitled, Deciphering the properties of different Arctic ice types during the growth phase of the MOSAiC floes: Implications for future studies. The study highlights downward directed gas pathways in FYI and SYI by inferring sea ice permeability and potential brine release from several time series of temperature and salinity measurements. The physical properties presented in this paper lay the foundation for subsequent analyses on actual gas contents measured in the ice cores, as well as air-ice and ice-ocean gas fluxes. Sea ice cores were collected with a Kovacs Mark II 9 cm diameter corer. To measure ice temperatures, about 4.5 cm deep holes were drilled into the core (intervals varied by site and leg) . The temperatures were measured by a digital thermometer within minutes after the cores were retrieved. The ice cores were placed into pre-labelled plastic sleeves sealed at the bottom end. The ice cores were transported to RV Polarstern and stored in a -20 degrees Celsius freezer. Each of the cores was sub-sampled, melted at room temperature, and processed for salinity within one or two days. The practical salinity was estimated by measuring the electrical conductivity and temperature of the melted samples using a WTW Cond 3151 salinometer equipped with a Tetra-Con 325 four-electrode conductivity cell. The practical salinity represents the the salinity estimated from the electrical conductivity of the solution. The dataset also contains derived variables, including sea ice density, brine volume fraction, and the Rayleigh number.
    Language: English
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  • 14
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    Alkane, fatty acid, total (organic) carbon and nitrogen distribution in ancient permafrost deposits at the Batagay Megaslump, East Siberia (2022)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: These datasets describe sediment samples taken from the Batagay megaslump, located in Yana Uplands in northeastern Siberia. Most sediment samples were taken from the slump headwall (B19-P1) by rapelling down on a rope from the slump surface and taking samples with a hole saw (diameter 55 mm, 40 mm deep) mounted on a handheld power drill. A second profile (B19-02) of the lowest part of the slump headwall was sampled (~100 m south) using a hammer and axe from the slump floor. Two permafrost sediment blocks (B19-03 and B19-04) at the slump bottom that had fallen from the headwall were sampled using a chainsaw. Finally, a baidzherakh (thermokarst mound; B19-05) in the north of the slump was sampled using a hammer and axe. The samples cover 5 stratigraphical units: 1. lower ice complex, 2. lower sand unit, 3. woody layer, 4. upper ice complex, 5. Holocene cover.
    Language: English
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  • 15
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    n-Fatty acid composition per total organic carbon in a rapidly eroding permafrost cliff (2022)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: Organic carbon (OC) stored in Arctic permafrost represents one of Earth’s largest and most vulnerable terrestrial carbon pools. Amplified climate warming across the Arctic results in widespread permafrost thaw. Permafrost deposits exposed at river cliffs and coasts are particularly susceptible to thawing processes. Accelerating erosion of terrestrial permafrost along shorelines leads to increased transfer of organic matter (OM) to nearshore waters. However, the amount of terrestrial permafrost carbon and nitrogen as well as the OM quality in these deposits are still poorly quantified. Here, we characterise the sources and the quality of OM supplied to the Lena River at a rapidly eroding permafrost river shoreline cliff in the eastern part of the delta (Sobo-Sise Island). Our multi-proxy approach captures bulk elemental, molecular geochemical and carbon isotopic analyses of late Pleistocene Yedoma permafrost and Holocene cover deposits, discontinuously spanning the last ~52 ka. We show that the ancient permafrost exposed in the Sobo-Sise cliff has a high organic carbon content (mean of about 5 wt%).We found that the OM quality, which we define as the intrinsic potential to further transformation, decomposition, and mineralization, is also high as inferred by the lipid biomarker inventory. The oldest sediments stem from Marine Isotope Stage (MIS) 3 interstadial deposits (dated to 52 to 28 cal kyr BP) and is overlaid by Last Glacial MIS 2 (dated to 28 to 15 cal ka BP) and Holocene MIS 1 (dated to 7–0 cal ka BP) deposits. The relatively high average chain length (ACL) index of n-alkanes along the cliff profile indicates a predominant contribution of vascular plants to the OM composition. The elevated ratio of iso and anteiso-branched FAs relative to long chain (C ≥ 20) n-FAs in the interstadial MIS 3 and the interglacial MIS 1 deposits, suggests stronger microbial activity and consequently higher input of bacterial biomass during these climatically warmer periods. The overall high carbon preference index (CPI) and higher plant fatty acid (HPFA) values as well as high C / N ratios point to a good quality of the preserved OM and thus to a high potential of the OM for decomposition upon thaw. A decrease of HPFA values downwards along the profile probably indicates a relatively stronger OM decomposition in the oldest (MIS 3) deposits of the cliff.
    Language: English
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  • 16
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    Alkane distribution in ancient permafrost deposits at the Batagay Megaslump, East Siberia (2022)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Language: English
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  • 17
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    Physical properties of sea ice cores from site MCS-SYI measured on legs 1 to 3 of the MOSAiC expedition (2022)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: We present sea ice temperature and salinity data from first-year ice (FYI) and second-year ice (SYI) relevant to the temporal development of sea ice permeability and brine drainage efficiency from the early growth phase in October 2019 to the onset of spring warming in May 2020. Our dataset was collected in the central Arctic Ocean during the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) Expedition in 2019 to 2020. MOSAiC was an international transpolar drift expedition in which the German icebreaker RV Polarstern anchored into an ice floe to gain new insights into Arctic climate over a full annual cycle. In October 2019, RV Polarstern moored to an ice floe in the Siberian sector of the Arctic at 85 degrees north and 137 degrees east to begin the drift towards the North Pole and the Fram Strait via the Transpolar Drift Stream. The data presented here were collected during the first three legs of the expedition, so all the coring activities took place on the same floe. The end dates of legs 1, 2, and 3 were 13 December, 24 February, and 4 June, respectively. The dataset contributed to a baseline study entitled, Deciphering the properties of different Arctic ice types during the growth phase of the MOSAiC floes: Implications for future studies. The study highlights downward directed gas pathways in FYI and SYI by inferring sea ice permeability and potential brine release from several time series of temperature and salinity measurements. The physical properties presented in this paper lay the foundation for subsequent analyses on actual gas contents measured in the ice cores, as well as air-ice and ice-ocean gas fluxes. Sea ice cores were collected with a Kovacs Mark II 9 cm diameter corer. To measure ice temperatures, about 4.5 cm deep holes were drilled into the core (intervals varied by site and leg) . The temperatures were measured by a digital thermometer within minutes after the cores were retrieved. The ice cores were placed into pre-labelled plastic sleeves sealed at the bottom end. The ice cores were transported to RV Polarstern and stored in a -20 degrees Celsius freezer. Each of the cores was sub-sampled, melted at room temperature, and processed for salinity within one or two days. The practical salinity was estimated by measuring the electrical conductivity and temperature of the melted samples using a WTW Cond 3151 salinometer equipped with a Tetra-Con 325 four-electrode conductivity cell. The practical salinity represents the the salinity estimated from the electrical conductivity of the solution. The dataset also contains derived variables, including sea ice density, brine volume fraction, and the Rayleigh number.
    Language: English
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  • 18
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    Rock and paleomagnetic data from two sediment cores from the Black Sea for the past 30 ka (2022)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: Rock magnetic and paleomagnetic results covering the past 30 ka were constructed from two sediment cores MSM33_856-1 (MSM33-55-1) and MSM33_855-1 (54-3) from the Black Sea. After the Mediterranean Sea water ingression, finely laminated organic-rich sapropelic sediments and coccolith oozes were deposited in the Black Sea since about 8.3 ka. Relict magnetic minerals in the Black Sea sarpoples are ferrous hemoilmenite, Fe-Mn and Fe-Cr spinels, and magnetite inclusions. In sediments deposited between about 14 and 8 ka, greigite and pyrite were formed in sediments because of the seawater penetration from overlying sediments after the seawater ingression. Before ~14 ka, the Black Sea sediments are dominated by detrital (titano-)magnetite minerals and the sporadically formed greigite which has SIRM/kLF ratios 〉 10 kAm-2. By comparison with detrital (titano-)magnetite samples between 20-30 ka, we found that relict magnetic mineral samples between 0-8.3 ka have similar behavior in recording the geomagnetic field. Moreover, the geomagnetic field variations reconstructed from the Black Sea sapropels are comparable with other validated regional datasets for the past 8.3 ka. The natural remanent magnetization (NRM) and the anhysteretic remanent magnetization (ARM) were measured with a 2G Enterprises 755 SRM (cryogenic) long-core magnetometer equipped with a sample holder for eight discrete samples at a separation of 20 cm. The magnetometer's in-line tri-axial alternating field (AF) demagnetizer was used to demagnetize the NRM and ARM of the samples. The NRM was measured after application of AF peak amplitudes of 0, 5, 10, 15, 20, 30, 40, 50, 65, 80, and 100 mT. Directions of the characteristic remanent magnetization (ChRM) were determined by principle component analysis (PCA) according to Kirschvink (1980). The error range of the ChRM is given as the maximum angular deviation (MAD). The ARM was imparted along the samples' z-axis with a static field of 0.05 mT and an AF field of 100 mT. Demagnetization then was performed in steps of 0, 10, 20, 30, 40, 50, 65, and 80 mT. The median destructive field of the ARM (MDFARM) was determined to estimate the coercivity of the sediments. The slope of NRM versus ARM of common demagnetization steps was used to determine the relative paleointensity (RPI). In most cases, demagnetization steps from 20 to 65 mT were used to determine the RPI.
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  • 19
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    TICON-td: Third-degree tidal constants based on GESLA sea-level records from globally distributed tide gauges (data) (2022)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: This dataset provides data for four third-degree tidal constituents used in the publication of Sulzbach et al (2022). The tidal constituents provided are the 3M1, 3M3, 3N2 and 3L2 for 134 globally distributed stations. The tide information, such as the nodal modulations of these tides, are taken from Table 1 and Table S2 of Ray (2020). These tidal constants are estimated using the GESLA dataset (Woodworth et al 2014) following the approach presented in Piccioni et al (2019). This record is an add-on to the full TICON dataset (https://doi.org/10.1594/PANGAEA.896587), using exactly the same data format and pre-processing. These steps include using tide gauge data that contains at least ten years of continuous data. Further, the dataset is restricted to only contain open ocean tide gauges by limiting it to a mean surrounding depth of tide gauges to be deeper than 500 meters in a 2-degree radius and excluding stations not native to the ocean domain of the employed tidal model TiME. Duplicate and closely neighbouring tide gauges, found within a 0.2-degree radius, are also removed from the dataset. This resulted in the availability of the four tidal constants for 134 tide gauges. The results are stored in one tab-separated text/ASCII file with 13 columns: 1. Latitude of the tide gauge station 2. Longitude of the tide gauge station 3. Constituent name 4. Amplitude (in cm) 5. Phase (in degrees) 6. Standard deviation of the amplitude (in cm) 7. Standard deviation of the phase (in degrees) 8. Percentage of missing observations 9. Total number of observations analyzed 10. Length of the maximum temporal gap found in the time series in days 11. Date of the first observation 12. Date of the last observation 13. Code that corresponds to the original source of the record TICON is a useful and easy-to-handle data set for tide model validation and allows the users to select the records according to the different criteria most suitable for their purposes. The options span from the choice of a geographical region to the use of single constituents or time periods.
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  • 20
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    Total (organic) carbon and nitrogen content in ancient permafrost deposits at the Batagay Megaslump, East Siberia (2022)
    PANGAEA
    Details
    Publication Date: 2023-01-30
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  • 21
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    Rock and paleomagnetic results of sediment core MSM33\_856-1 over the past 30 ka (2022)
    PANGAEA
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    Publication Date: 2023-01-30
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  • 22
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    Microfacies data and age model from the International Continental Scientific Drilling Program (ICDP) Dead Sea core and the Masada outcrop (southwestern shore of the Dead Sea) (2022)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: These datasets provide sedimentological data partly at annual resolution and an age model for the lateglacial part of (1) the ICDP sediment core 5017-1-A retrieved from the deep northern Dead Sea basin in 2010/11, and (2) for the Masada outcrop located at the southwestern shore of the Dead Sea sampled in 2018. The here investigated two sediment sections cover the last glacial-interglacial transition (ca. 17-11.5 ka BP) in the hydroclimatically sensitive Levant, when the water level of Lake Lisan – the precursor of the Dead Sea – dropped dramatically from its glacial high-stand to the Holocene low levels. Here, we analyze the interval between the last two gypsum units – the Upper Gypsum Unit (UGU) and the Additional Gypsum Unit (AGU) – which were also used to correlate the two sites. In the ICDP core this section is located between ~101 and 88.5 m sediment depth below lake floor and at Masada it encompasses the uppermost ~3.8 m sediments of the Lisan Formation, which form the terminal deposit at this site. Due to the lake level decline, the complete transition into the Holocene is only recorded in the ICDP core, while sedimentation at Masada terminates earlier. The microfacies was investigated by continuous thin section microscopy, while additional macroscopic information is provided from over- and underlying sediment sections. A revised chronology using age modelling in OxCal (Ramsey 2008; Ramsey 2009; Ramsey and Lee 2013) was developed for the ICDP core and a floating varve chronology was constructed at Masada. Using these new microfacies data from marginal (Masada) and deep-water (ICDP core) sediments, the hydroclimatic variability during the final stage of Lake Lisan can be reconstructed, which could provide important insights into the development of human sedentism in the region at this time.
    Language: English
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  • 23
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    Physical properties of sea ice cores from site BGC3 measured on legs 1 to 3 of the MOSAiC expedition (2022)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: We present sea ice temperature and salinity data from first-year ice (FYI) and second-year ice (SYI) relevant to the temporal development of sea ice permeability and brine drainage efficiency from the early growth phase in October 2019 to the onset of spring warming in May 2020. Our dataset was collected in the central Arctic Ocean during the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) Expedition in 2019 to 2020. MOSAiC was an international transpolar drift expedition in which the German icebreaker RV Polarstern anchored into an ice floe to gain new insights into Arctic climate over a full annual cycle. In October 2019, RV Polarstern moored to an ice floe in the Siberian sector of the Arctic at 85 degrees north and 137 degrees east to begin the drift towards the North Pole and the Fram Strait via the Transpolar Drift Stream. The data presented here were collected during the first three legs of the expedition, so all the coring activities took place on the same floe. The end dates of legs 1, 2, and 3 were 13 December, 24 February, and 4 June, respectively. The dataset contributed to a baseline study entitled, Deciphering the properties of different Arctic ice types during the growth phase of the MOSAiC floes: Implications for future studies. The study highlights downward directed gas pathways in FYI and SYI by inferring sea ice permeability and potential brine release from several time series of temperature and salinity measurements. The physical properties presented in this paper lay the foundation for subsequent analyses on actual gas contents measured in the ice cores, as well as air-ice and ice-ocean gas fluxes. Sea ice cores were collected with a Kovacs Mark II 9 cm diameter corer. To measure ice temperatures, about 4.5 cm deep holes were drilled into the core (intervals varied by site and leg) . The temperatures were measured by a digital thermometer within minutes after the cores were retrieved. The ice cores were placed into pre-labelled plastic sleeves sealed at the bottom end. The ice cores were transported to RV Polarstern and stored in a -20 degrees Celsius freezer. Each of the cores was sub-sampled, melted at room temperature, and processed for salinity within one or two days. The practical salinity was estimated by measuring the electrical conductivity and temperature of the melted samples using a WTW Cond 3151 salinometer equipped with a Tetra-Con 325 four-electrode conductivity cell. The practical salinity represents the the salinity estimated from the electrical conductivity of the solution. The dataset also contains derived variables, including sea ice density, brine volume fraction, and the Rayleigh number.
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  • 24
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    Fatty acid distribution in ancient permafrost deposits at the Batagay Megaslump, East Siberia (2022)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Language: English
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  • 25
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    Varve thickness of lateglacial ICDP core 5017-1-A (2022)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: This dataset provides annually resolved microfacies data from ICDP core 5017-1-A, retrieved from the deep northern Dead Sea basin in 2010/11, for the last glacial-interglacial transition (ca. 17-11.5 ka BP). Sediments of the Lisan Formation were investigated between ~101 and 88.5 m sediment depth below lake floor by continuous thin section microscopy, while additional macroscopic information is provided from core catchers, as well as from over- and underlying sediment sections. Thin sections were prepared following the standard procedure by Brauer and Casanova (2001) that was adjusted for salty sediments. Thin section analyses were performed on overlapping large-scale thin sections using a Zeiss Axiolab pol microscope at magnifications of 50-400x. Microfacies analyses included varve counting and measurements of varve and sublayer thickness.
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  • 26
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    Harmonized in-situ observations of surface energy fluxes and environmental drivers at 64 Arctic vegetation and glacier sites - Metadata (2022)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: Despite the importance of surface energy budgets (SEBs) for land-climate interactions in the Arctic, uncertainties in their prediction persist. In situ observational data of SEB components - useful for research and model validation - are collected at relatively few sites across the terrestrial Arctic, and not all available datasets are readily interoperable. Furthermore, the terrestrial Arctic consists of a diversity of vegetation types, which are generally not well represented in land surface schemes of current Earth system models. This dataset contains metadata information about surface energy budget components measured at 64 tundra and glacier sites 〉60° N across the Arctic. This information was taken from the open-access repositories FLUXNET, Ameriflux, AON, GC-Net and PROMICE. The contained datasets are associated with the publication vegetation type as an important predictor of the Arctic Summer Land Surface Energy Budget by Oehri et al. 2022, and intended to support research of surface energy budgets and their relationship with environmental conditions, in particular vegetation characteristics across the terrestrial Arctic.
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  • 27
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    Age model of lateglacial ICDP core 5017-1-A (2022)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: This dataset provides the results from Bayesian age depth modelling in OxCal for ICDP core 5017-1-A, retrieved from the deep northern Dead Sea basin in 2010/11, for the last glacial-interglacial transition between ~101 and 88.5 m sediment depth below lake floor (ca. 17-11.5 ka BP). The model was performed in OxCal v.4.4 using a P_Sequence (1,1,C(-2,2)) (Ramsey 2008; Ramsey 2009; Ramsey and Lee 2013) and includes three tephrochronological ages from Neugebauer et al. (2021) and three radiocarbon ages from Kitagawa et al. (2017).
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  • 28
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    Harmonized in-situ observations of surface energy fluxes and environmental drivers at 64 Arctic vegetation and glacier sites - Surface energy budget componenent data (2022)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: Despite the importance of surface energy budgets (SEBs) for land-climate interactions in the Arctic, uncertainties in their prediction persist. In situ observational data of SEB components - useful for research and model validation - are collected at relatively few sites across the terrestrial Arctic, and not all available datasets are readily interoperable. Furthermore, the terrestrial Arctic consists of a diversity of vegetation types, which are generally not well represented in land surface schemes of current Earth system models. This dataset comprises harmonized, standardized and aggregated in-situ observations of surface energy budget components measured at 64 sites on vegetated and glaciated sites north of 60° latitude, in the time period from 1994 till 2021. The surface energy budget components include net radiation, sensible heat flux, latent heat flux, ground heat flux, net shortwave radiation, net longwave radiation, surface temperature and albedo, which were aggregated to daily mean, minimum and maximum values from hourly and half-hourly measurements. Data were retrieved from the monitoring networks FLUXNET, AmeriFlux, AON, GC-Net and PROMICE.
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  • 29
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    Physical properties of sea ice cores from site BGC2 measured on legs 1 to 3 of the MOSAiC expedition (2022)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: We present sea ice temperature and salinity data from first-year ice (FYI) and second-year ice (SYI) relevant to the temporal development of sea ice permeability and brine drainage efficiency from the early growth phase in October 2019 to the onset of spring warming in May 2020. Our dataset was collected in the central Arctic Ocean during the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) Expedition in 2019 to 2020. MOSAiC was an international transpolar drift expedition in which the German icebreaker RV Polarstern anchored into an ice floe to gain new insights into Arctic climate over a full annual cycle. In October 2019, RV Polarstern moored to an ice floe in the Siberian sector of the Arctic at 85 degrees north and 137 degrees east to begin the drift towards the North Pole and the Fram Strait via the Transpolar Drift Stream. The data presented here were collected during the first three legs of the expedition, so all the coring activities took place on the same floe. The end dates of legs 1, 2, and 3 were 13 December, 24 February, and 4 June, respectively. The dataset contributed to a baseline study entitled, Deciphering the properties of different Arctic ice types during the growth phase of the MOSAiC floes: Implications for future studies. The study highlights downward directed gas pathways in FYI and SYI by inferring sea ice permeability and potential brine release from several time series of temperature and salinity measurements. The physical properties presented in this paper lay the foundation for subsequent analyses on actual gas contents measured in the ice cores, as well as air-ice and ice-ocean gas fluxes. Sea ice cores were collected with a Kovacs Mark II 9 cm diameter corer. To measure ice temperatures, about 4.5 cm deep holes were drilled into the core (intervals varied by site and leg) . The temperatures were measured by a digital thermometer within minutes after the cores were retrieved. The ice cores were placed into pre-labelled plastic sleeves sealed at the bottom end. The ice cores were transported to RV Polarstern and stored in a -20 degrees Celsius freezer. Each of the cores was sub-sampled, melted at room temperature, and processed for salinity within one or two days. The practical salinity was estimated by measuring the electrical conductivity and temperature of the melted samples using a WTW Cond 3151 salinometer equipped with a Tetra-Con 325 four-electrode conductivity cell. The practical salinity represents the the salinity estimated from the electrical conductivity of the solution. The dataset also contains derived variables, including sea ice density, brine volume fraction, and the Rayleigh number.
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  • 30
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    Physical properties of sea ice cores for biogeochemistry studies measured on legs 1 to 3 of the MOSAiC expedition (2022)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: We present sea ice temperature and salinity data from first-year ice (FYI) and second-year ice (SYI) relevant to the temporal development of sea ice permeability and brine drainage efficiency from the early growth phase in October 2019 to the onset of spring warming in May 2020. Our dataset was collected in the central Arctic Ocean during the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) Expedition in 2019 to 2020. MOSAiC was an international transpolar drift expedition in which the German icebreaker RV Polarstern anchored into an ice floe to gain new insights into Arctic climate over a full annual cycle. In October 2019, RV Polarstern moored to an ice floe in the Siberian sector of the Arctic at 85 degrees north and 137 degrees east to begin the drift towards the North Pole and the Fram Strait via the Transpolar Drift Stream. The data presented here were collected during the first three legs of the expedition, so all the coring activities took place on the same floe. The end dates of legs 1, 2, and 3 were 13 December, 24 February, and 4 June, respectively. The dataset contributed to a baseline study entitled, Deciphering the properties of different Arctic ice types during the growth phase of the MOSAiC floes: Implications for future studies. The study highlights downward directed gas pathways in FYI and SYI by inferring sea ice permeability and potential brine release from several time series of temperature and salinity measurements. The physical properties presented in this paper lay the foundation for subsequent analyses on actual gas contents measured in the ice cores, as well as air-ice and ice-ocean gas fluxes. Sea ice cores were collected with a Kovacs Mark II 9 cm diameter corer. To measure ice temperatures, about 4.5 cm deep holes were drilled into the core (intervals varied by site and leg) . The temperatures were measured by a digital thermometer within minutes after the cores were retrieved. The ice cores were placed into pre-labelled plastic sleeves sealed at the bottom end. The ice cores were transported to RV Polarstern and stored in a -20 degrees Celsius freezer. Each of the cores was sub-sampled, melted at room temperature, and processed for salinity within one or two days. The practical salinity was estimated by measuring the electrical conductivity and temperature of the melted samples using a WTW Cond 3151 salinometer equipped with a Tetra-Con 325 four-electrode conductivity cell. The practical salinity represents the the salinity estimated from the electrical conductivity of the solution. The dataset also contains derived variables, including sea ice density, brine volume fraction, and the Rayleigh number.
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  • 31
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    Biogeochemical parameters of thawed sediments underneath a Yedoma and Alas thermokarst lake in Eastern Siberia, version 2 (2022)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: This dataset describes two 17 m long sediment cores taken from beneath two thermokarst lakes in the Yukechi Alas, Central Yakutia, Russia. The first core was taken from below an Alas thermokarst lake (YU-L7; 61.76397°N, 130.46442°E) and the second core below and Yedoma lake (YU-L15; 61.76086°N, 130.47466°E). The dataset presents biogeochemical and biomarker parameters of sediment cores YU-L7 and YU-L15. Biogeochemical analyses include total carbon (TC) content, total organic carbon (TOC) content, total nitrogen (TN) content. Biomarker parameters include the n-alkane concentration, average chain length (ACL), carbon preference index (CPI), brGDGT concentration, archaeol concentration and the isoGDGT-0 concentration. The n-alkanes were measured in the aliphatic fraction by gas chromatography-mass spectromety using a Trace GC Ultra coupled to a DSQ MS. The branched and isoprenoid glycerol dialkyl glycerol tetraethers, as well as the dialkyl glycerol diether lipid (archaeol) were measured in the NSO fraction using a Shimadzu LC-10AD high-performance liquid chromatograph coupled to a Finnigan TSQ 7000 mass spectrometer via an atmospheric pressure chemical ionization interface. The pH soil is the sediment pH which was assessed by adding 6.12 mL of 0.01 M CaCl~2~ to ~2.5 g dried sediment and measuring with a Multilab 540 (WTW) at 20°C.
    Language: English
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  • 32
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    Physical properties of sea ice cores from site BGC1 measured on legs 1 to 3 of the MOSAiC expedition (2022)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: We present sea ice temperature and salinity data from first-year ice (FYI) and second-year ice (SYI) relevant to the temporal development of sea ice permeability and brine drainage efficiency from the early growth phase in October 2019 to the onset of spring warming in May 2020. Our dataset was collected in the central Arctic Ocean during the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) Expedition in 2019 to 2020. MOSAiC was an international transpolar drift expedition in which the German icebreaker RV Polarstern anchored into an ice floe to gain new insights into Arctic climate over a full annual cycle. In October 2019, RV Polarstern moored to an ice floe in the Siberian sector of the Arctic at 85 degrees north and 137 degrees east to begin the drift towards the North Pole and the Fram Strait via the Transpolar Drift Stream. The data presented here were collected during the first three legs of the expedition, so all the coring activities took place on the same floe. The end dates of legs 1, 2, and 3 were 13 December, 24 February, and 4 June, respectively. The dataset contributed to a baseline study entitled, Deciphering the properties of different Arctic ice types during the growth phase of the MOSAiC floes: Implications for future studies. The study highlights downward directed gas pathways in FYI and SYI by inferring sea ice permeability and potential brine release from several time series of temperature and salinity measurements. The physical properties presented in this paper lay the foundation for subsequent analyses on actual gas contents measured in the ice cores, as well as air-ice and ice-ocean gas fluxes. Sea ice cores were collected with a Kovacs Mark II 9 cm diameter corer. To measure ice temperatures, about 4.5 cm deep holes were drilled into the core (intervals varied by site and leg) . The temperatures were measured by a digital thermometer within minutes after the cores were retrieved. The ice cores were placed into pre-labelled plastic sleeves sealed at the bottom end. The ice cores were transported to RV Polarstern and stored in a -20 degrees Celsius freezer. Each of the cores was sub-sampled, melted at room temperature, and processed for salinity within one or two days. The practical salinity was estimated by measuring the electrical conductivity and temperature of the melted samples using a WTW Cond 3151 salinometer equipped with a Tetra-Con 325 four-electrode conductivity cell. The practical salinity represents the the salinity estimated from the electrical conductivity of the solution. The dataset also contains derived variables, including sea ice density, brine volume fraction, and the Rayleigh number.
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  • 33
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    Harmonized in-situ observations of surface energy fluxes and environmental drivers at 64 Arctic vegetation and glacier sites (2022)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: Despite the importance of surface energy budgets (SEBs) for land-climate interactions in the Arctic, uncertainties in their prediction persist. In-situ observational data of SEB components - useful for research and model validation - are collected at relatively few sites across the terrestrial Arctic, and not all available datasets are readily interoperable. Furthermore, the terrestrial Arctic consists of a diversity of vegetation types, which are generally not well represented in land surface schemes of current Earth system models. Therefore, we here provide four datasets comprising: 1. Harmonized, standardized and aggregated in situ observations of SEB components at 64 vegetated and glaciated sites north of 60° latitude, in the time period 1994-2021 2. A description of all study sites and associated environmental conditions, including the vegetation types, which correspond to the classification of the Circumpolar Arctic Vegetation Map (CAVM, Raynolds et al. 2019). 3. Data generated in a literature synthesis from 358 study sites on vegetation or glacier (〉=60°N latitude) covered by 148 publications. 4. Metadata, including data contributor information and measurement heights of variables associated with Oehri et al. 2022.
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  • 34
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    Lithology of lateglacial ICDP core 5017-1-A (2022)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: This dataset provides lithological data from ICDP core 5017-1-A, retrieved from the deep northern Dead Sea basin in 2010/11, for the last glacial-interglacial transition (ca. 17-11.5 ka BP). The microfacies of the Lisan Formation was investigated between ~101 and 88.5 m sediment depth below lake floor by continuous thin section microscopy, while additional macroscopic information is provided from core catchers, as well as from over- and underlying sediment sections. Thin sections were prepared following the standard procedure by Brauer and Casanova (2001) that was adjusted for salty sediments. Thin section analyses were performed on overlapping large-scale thin sections using a Zeiss Axiolab pol microscope at magnifications of 50-400x.
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  • 35
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    Rock and paleomagnetic results of sediment core MSM33\_855-1 over the past 30 ka (2022)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Language: English
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  • 36
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    Lateral and vertical carbon fluxes from the polygonal tundra in the Lena River Delta, Siberia (summer 2014) (2022)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: This dataset contains observations of water discharge rates and concentrations of dissolved organic carbon (DOC) and dissolved inorganic carbon (DIC) from a polygonal tundra site in the Lena River Delta, Russia. This dataset also contains lateral carbon fluxes of DOC and DIC that were estimated from these observations. Additionally, this dataset contains vertical fluxes of carbon dioxide and methane from the same study site. All observations were recorded on Samoylov Island (N 72.377188, E 126.495144) in the summer of 2014. The abbreviations A1, A2 and B refer to three outflows on the island where the hydrological parameters were observed (A1: N 72.379991, E 126.480886; A2: N 72.380134, E 126.481433; B: N 72.381348, E 126.483482). All outflows were approximately 10 meters. More information can be found in https://doi.org/10.5194/bg-19-3863-2022.
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  • 37
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    Harmonized in-situ observations of surface energy fluxes and environmental drivers at 64 Arctic vegetation and glacier sites - Environmental conditions (2022)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: Despite the importance of surface energy budgets (SEBs) for land-climate interactions in the Arctic, uncertainties in their prediction persist. In situ observational data of SEB components - useful for research and model validation - are collected at relatively few sites across the terrestrial Arctic, and not all available datasets are readily interoperable. Furthermore, the terrestrial Arctic consists of a diversity of vegetation types, which are generally not well represented in land surface schemes of current Earth system models. This dataset describes the environmental conditions for 64 tundra and glacier sites (〉=60°N latitude) across the Arctic, for which in situ measurements of surface energy budget components were harmonized (see Oehri et al. 2022). These environmental conditions are (proxies of) potential drivers of SEB-components and could therefore be called SEB-drivers. The associated environmental conditions, include the vegetation types graminoid tundra, prostrate dwarf-shrub tundra, erect-shrub tundra, wetland complexes, barren complexes (≤ 40% horizontal plant cover), boreal peat bogs and glacier. These land surface types (apart from boreal peat bogs) correspond to the main classification units of the Circumpolar Arctic Vegetation Map (CAVM, Raynolds et al. 2019). For each site, additional climatic and biophysical variables are available, including cloud cover, snow cover duration, permafrost characteristics, climatic conditions and topographic conditions.
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  • 38
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    Marine ERT surveys acquired in the region of Tuktoyaktuk Island, Northwest Territories, Canada (2022)
    PANGAEA
    Details
    Publication Date: 2023-02-01
    Description: This dataset contains over 30 marine Electrical Resistivity Tomography (ERT) profiles taken in September 2021 around Tuktoyaktuk Island (NWT / Beaufort Sea, Canada). The measurements were part of the “Mackenzie Delta Permafrost Field Campaign” (mCan2021) within the “Modular Observation solutions for Earth Systems” (MOSES) program. The collected profiles consist of numerous adjacent vertical soundings in a (quasi-symmetric) reciprocal Wenner-Schlumberger array, using a floating cable towed behind a boat. GPS records along the electrode streamer were taken, enabling the improvement of pre- processing by excluding measurements for which the cable was curved and electrode positions deviated too widely. The aim of the study was to determine the depth of the submarine permafrost. Cleaned data is provided in csv format.
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  • 39
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    Permafrost related measurements in the Mackenzie Delta, Northwest Territories, Canada, from the MOSES field campaign in September 2021 (2022)
    PANGAEA
    Details
    Publication Date: 2023-02-01
    Description: This collection contains permafrost related measurements in the Mackenzie Delta, NWT, Canada from the MOSES (Modular Observation Solutions for Earth Systems) field campaign in September 2021. The field campaign was focused on three subaquatic sites: a small thermokarst lake along the ITH just south of Trail Valley Creek, "Lake 3", an elongated lake with known methane occurence in the outer Mackenzie Delta, "Swiss Cheese Lake", and north and south of Tuktoyaktuk Island. At "Swiss Cheese Lake", we measured methane and CO2 concentrations in surface water and in the air above the lake, lake bed temperatures and detailed bathymetry. At "Lake 3" we measured active layer thickness on the lake banks, lake bed temperatures, and detailed bathymetry, as well as an ERT survey to estimate the talik depth below the lake. North and south of Tuktoyaktuk Island, we measured active layer thickness and sea bed temperatures and did an extensive ERT survey to obtain the depth of the subsea permafrost table. An additional passive seismic survey was carried out and the data is available at https://doi.org/10.5880/GIPP.202199.1.
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  • 40
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    Lacustrine and amphibian ERT surveys acquired in the region of Inuvik, Northwest Territories, Canada (2022)
    PANGAEA
    Details
    Publication Date: 2023-02-01
    Description: This dataset contains seven Electrical Resistivity Tomography (ERT) profiles taken in September 2021 at “Lake 3”, a thermokarst lake near the Inuvik-Tuktoyaktuk-Highway (ITH), about 50 km north of Inuvik (NWT, Canada). The measurements were part of the “Mackenzie Delta Permafrost Field Campaign” (mCan2021) within the “Modular Observation solutions for Earth Systems” (MOSES) program. The collected profiles consist of numerous adjacent vertical soundings in a (quasi-symmetric) reciprocal Wenner-Schlumberger array. In addition to surveys on the lake, using a floating cable towed behind a boat, two “amphibian” profiles were taken. Starting as purely terrestrial surveys using metal spike electrodes, the cable was then moved towards the lake with some of the electrodes floating on the water surface, and some still on land. The aim of the study was to determine permafrost properties on the land, to detect a possible talik beneath the lake and to especially be able to infer the transition between the two below the shoreline.
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  • 41
    Electronic Resource
    Electronic Resource
    Fast reactors: Low morale (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 633-633 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Staff morale may be as much a threat to the British fast reactor programme as the prospect of a public inquiry on the project. The latest sign of this is the resignation of Mr Jack Moore, coordinator of the fast reactor programme at the UK Atomic Energy Authority (UKAEA), at the end of the year. Mr ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/288633b0
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  • 42
    Electronic Resource
    Electronic Resource
    Beyond Saturn (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 634-634 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Saturn, as seen by Voyager 1 on 16 November, four days after the encounter. Some of the dark spoke-like ring features (Nature 4 December) are seen as bright patches due to scattering of sunlight from particles within them. Voyager 1 will be monitored to as great a distance as possible in an attempt ...
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    European environment: Small gains (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 636-636 
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    Notes: [Auszug] Brussels Agreement has still not been reached by the Environmental Council of the EEC on two pieces of legislation: one concerning the prevention of industrial accidents and the other on the level of mercury discharge. However, new controls on whale imports, the recycling of waste paper, and ...
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    Biospheric works (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 638-638 
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    Notes: [Auszug] SIR - I have just read your article concerning Unesco in the 6 November issue of Nature. While I shall refrain from commenting upon the overall content of the article - although for instance we do not know here of any "new technological order" which would have been approved by the recent Belgrade ...
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    US research budget now in better shape (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 632-632 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Washington It may not last, but in contrast with previous years, when President Carter's requests for additional funding for science were trimmed back by Congress, the final 1981 research budget looks in even better shape than when it was presented in January 1980. The Administration revised ...
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    Coefficients of relatedness in sociobiology (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 694-697 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] What is R in equation (1)? On the basis of a particular outbred model, Hamilton1'2 claimed that Wright's19 'coefficient of relationship' was the required R. However, later, giving a heuristic development but no further model, Hamilton20'21 modified his identification of R with Wright's coefficient ...
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    Reversible activation–inactivation of renin in human plasma (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 702-705 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In the first series of experiments we studied the change in the renin concentration of normal male plasma during acid-activation in the presence and absence of soya bean trypsin inhibitor (Fig. 1). Samples of plasma (0.5 ml) were dialysed to pH 3.0 for 24 h at 4 C (rf. 1) and then taken to pH 7.4 ...
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    No junctional communication between epithelial cells in hydra (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 711-713 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Electrotonic coupling between epithelial cells was measured by conventional intracellular glass microelectrodes21. Current pulses were passed and voltages recorded through a single microelectrode. In the intact animal measurements were performed in the head, mid-gastric and foot regions with the ...
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    DNA cross-linking and monoadduct repair in nitrosourea-treated human tumour cells (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 727-729 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Thirteen human cell strains, most of them derived from malignant tumours, were studied (Table 1). The phenotype of each strain was classified as Mer+ or Mer by R. Day, on the basis of whether or not the cells were proficient in supporting the growth of adenovirus 5 treated with ...
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    Dimethyl sulphoxide reduces anti-receptor antibody titres in experimental myasthenia gravis (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 733-734 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] EAMG was produced in female Lewis rats (200-225 g) by immunizing them with 50 g of AChR, emulsified in an equal volume of Freund's complete adjuvant, injected intradermally. AChR was extracted from the electric organs of Torpedo cali-fornicus with Triton X-100 and purified by affinity ...
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    Brazilian agriculture: Soya beanfeast (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 637-637 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Brasilia, November In the scramble to develop its unexploited resources, officials say that Brazil is turning away from the Amazon Basin to an area of savannah, known locally as the Cerrados, covering about 180 million hectares mainly in the centre of the country. Attempts to open up the Cerrados, ...
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    High-energy physics: New man, new style (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 636-637 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The next director of DESY, the West German particle physics laboratory at Hamburg, will be 49-year-old Dr Volker Soergel, at present a member of the directorate of CERN, the European centre for particle physics in Geneva. Departing DESY director Professor Herwig Schopper announced the appointment ...
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    Retrovirus research (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 742-742 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE momentum that was given to retro-virus research by the discovery of reverse transcriptase is still strong. Today, ten years after that discovery, the field remains one of the most active areas in biology. The book, a collection of 12 reviews by as many groups, is an attempt to take stock and ...
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    Is the Sun helium-deficient? (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 544-547 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The recent observations ofsolar 5-min oscillations of low degree agree approximately with the predictions of a standard solar model with normal abundances of helium and heavy elements. Much of the apparent discrepancy noticed when the observations werefirst announced was a result of having ...
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    Proline and valine—cues which stimulate grasshopper herbivory during drought stress? (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 697-698 
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    Notes: [Auszug] Ecological studies of grasshoppers and locusts have often considered weather factors to be important determinants of population size or growth rate4"9. Dry soil conditions in particular seem to favour population increases of many economically important Orthopteran species10. It has been ...
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    Lu–Hf total-rock isochron for the eucrite meteorites (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 571-574 
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    Notes: [Auszug] Previous geochronological use of the 176Lu-176Hf decay scheme involved REE-rich minerals1'2 in attempts to determine the half life. Faure3 summarized all physical determinations and suggested a best estimate of 3.5±0.2xl010yr. However, because 176Lu is an odd Z-odd N nuclide, then a ...
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    The principal eyes of a jumping spider have a telephoto component (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 578-580 
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    Notes: [Auszug] The inside of the pit of the anterior median eye of P. fimbriata is structureless and must have a refractive index (rc) close to that of saline, about 1.336 (Fig. 2). In glutaraldehyde-fixed material, cut while frozen, the matrix behind the pit was found by inter-ferometry to have a uniform n, a ...
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    Identification of the BAL-labile factor (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 717-718 
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    Notes: [Auszug] The following clues led us to this identification: (1) Deul and Thorn's observation5 that, whereas after either BAL treatment or addition of antimycin electron flow between cytochromes b and c is blocked, the addition of antimycin to BAL-treated preparations causes a block in the reduction of ...
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    An embryo protein induced by SV40 virus transformation of mouse cells (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 722-724 
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    Notes: [Auszug] The large T antigen, the 55K cellular protein and the small t antigen were the major labelled proteins specifically immuno-precipitated from an SV40-transformed cloned mouse fibroblast cell *215CSC with the SV40 tumour (T) serum1"9, as shown in the left half of the panels of Fig. 1. In the ...
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    Human immunoglobulin variable region genes—DNA sequences of two V κ genes and a pseudogene (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 730-733 
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    Notes: [Auszug] To isolate human VK genes, we used the ability of mouse and human V gene sequences to cross-hybridize15. A mouse VK plus constant region cDNA clone derived from MPC11 plasmacy-toma cells16 was used as a probe to screen a library of fragments of human fetal liver DNA17 cloned in the ? phage vector, ...
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    100 years ago (1980)
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    Nature 288 (1980), S. 539-539 
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    Notes: [Auszug] Fanduri—a Dorey papuan Epa — a Village of the Mahori papuans. Pictures from "New Guinea: What I did and what I saw" by L. M. D'Albertis reported in Nature 23,16 December, 153, ...
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    Israeli science: Crisis at Weizmann (1980)
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    Nature 288 (1980), S. 531-531 
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    Notes: [Auszug] Financial crisis threatens the "very existence" of the Weizmann Institute of Science, Israel's private and principal research institution - or at least that is what Weizmann president, Professor Michael Sela, told the governing body recently. But according to the Weizmann Institute Foundation in ...
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    Recognition sequence of bacteriophage ΦX174 gene A protein : an initiator of DNA replication (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 561-566 
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    Notes: [Auszug] Gene A protein, the initiator protein of bacteriophage ΦX174 DNA replication, cleaves synthetic single-stranded oligodeoxyribonucleotides at the same site as the corresponding sequence at the ΦX origin. The results identify the recognition sequence within the decamer CAACTTGATA which is ...
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    Comets and the origin of life (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 540-540 
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    Notes: [Auszug] COMETS are the most spectacular bodies in our solar system and the anticipated return of Halley's Comet in 1985-6 has already proved a catalyst for increased cometary research. As the comet nucleus contains, perhaps with the exception of phosphorus, the necessary ingredients for life on this ...
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    The constancy of the solar diameter over the past 250 years (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 548-551 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Reconsideration of meridian circle observations with analysis of transits of Mercury and durations of total solar eclipses indicate that there has been no detectable secular change in the solar diameter during the past 250 ...
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    Potent carcinogenicity of nitrosodiethanolamine in rats (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 589-590 
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    Notes: [Auszug] Sixty male and sixty female Fischer 344 rats of the colony of the Frederick Cancer Research Center, bred and raised in SPF conditions, were housed in plastic cages with wire-mesh bottoms (five rats per cage). The animals were 6-7 weeks old at the beginning of the experiment, and were randomized ...
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    Planform of mantle convection beneath the Pacific Ocean (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 442-446 
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    Notes: [Auszug] The correlation between variations of the bathymetry and of the geoid in the Pacific Ocean suggests that both are the surface expression of mantle convection. The planform of the convection which is required to generate the observed anomalies does not consist of rolls but is three dimensional, with ...
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    An actin-binding protein from Acanthamoeba regulates actin filament polymerization and interactions (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 455-459 
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    Notes: [Auszug] A protein has been purified from Acanthamoeba which, like cytochalasin B, caps the end of actin filaments normally favoured for monomer addition and inhibits the interactions of actin filaments. In addition, this ‘capping’ protein nucleates the polymerization of actin monomers and ...
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    Expression of H–2, laminin and SV40T and TASA on differentiation of transformed murine teratocarcinoma cells (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 615-618 
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    Notes: [Auszug] F9 12-1 cells are morphologically identical to murine ECCs. In our experiments (Table 1), we were unable to find any unequivocably SV40 T antigen-positive nuclei; however, because it is difficult to estimate nuclear fluorescence in ECCs due to their characteristic growth in clumps of rounded cells, ...
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    The higher order structure of chicken erythrocyte chromosomes in vivo (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 620-622 
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    Notes: [Auszug] Studies of concentrated isolated chromatin by X-ray and neutron scattering have shown dominant structural periodicities at about 110, 55, 38, 27 and 22 A7'14. The intensities and exact positions of these bands depend on ionic composition of the solution and chromatin concentration. Significantly ...
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    Thermodynamics and macromolecules (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 628-629 
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] To MANY teachers of biophysical chemistry it seems strange to note that over the past two decades instruction on the subject of macromolecules has progressed to a position of marked contrasts. On the one hand, structural descriptions of macro-molecules are based on accurate methods of X-ray ...
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    [Book Reviews ‘picture story’] (1980)
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    Nature 288 (1980), S. 630-630 
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    Notes: [Auszug] CDdlo Iringo. Cap.LXXVL E O iringo fie caldo Si humido ncl primo grado : Et laruahumiditacrnagiorcdcllaruacalidita: & quel li ehe uno la radicc condita co melle molriplica il pcr ma:cfa ai coicxx& allodrisaredclla ucrga ; & fa bon nu trimentorDicc fcrapione Si Auiccna :Ec l radicc de ...
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    Science foundation all set at last (1980)
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    Nature 288 (1980), S. 425-425 
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    Notes: [Auszug] Washington As widely expected, the US National Science Foundation (NSF) has announced its intention to set up a new directorate for engineering, and to distribute responsibility for applied science - at present administered jointly with engineering - across the foundation's basic science ...
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    Polish science: Advice not taken (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 426-427 
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    Notes: [Auszug] The Gierek regime consistently "torpedoed or disavowed" constructive criticisms from its nine-person team of scientific advisers. So claims Professor Alojzy Melich, a member of the team since its inauguration in 1977, in an interview in Trybuna Robotnicza, the daily paper of Katowice (Mr Gierek's ...
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    Third world: Consumers arise (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 428-429 
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    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Kuala Lumpur, November At a time when the new Administration in the United States seems likely to ease up on the stringent regulation of technological products, consumer groups in the Third World are beginning to voice demands for protection against potentially harmful substances and goods like ...
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    Museum pieces (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 430-430 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR-In Dr Halstead's pleas for traditionalism in the Natural History Museum's exhibitions (Nature 20 November, p.208) he makes an assumption that lends much potential support to those whose policies he is so "fervently dedicated" to trying to discredit. It is true that Marxists have attempted to ...
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    100 years ago (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 433-433 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The recently-presented budget of Prussia shows that, despite the financial straits of the kingdom, no considerations of economy are allowed to hamper the growth of its scientific and educational system. First on the list come the nine universities with an allotment of 7,050,000 marks (352,500/.). ...
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    Actin assembly (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 437-438 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A survey of the literature shows that the study of actin filament assembly is positively booming although it is one of the older areas in the contractile protein field. Understanding of the polymerization of many protein polymers grew out of biophysical studies begun in the 1960s on the mechanism ...
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    Microbial degradation of xenobiotic compounds (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 322-322 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] MOST organic compounds released into the environment are rapidly broken down by the activities of fungi and bacteria. However, certain man-made compounds (xenobiotics) are not quickly degraded. Public concern over the persistence of such compounds stems from their accumulation in food chains and ...
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    Erratum (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 438-438 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In the News and Views article "Lessons from a peptidergic neurone" by B. T. Pickering (13 November, 288,117; 1980) the molecular weights quoted were incorrectly altered by the insertion of 'K' and should instead by read in ...
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    Production of human hybridomas secreting antibodies to measles virus (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 488-489 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] As human chromosomes are lost in mouse x human hybridomas3'4 it is difficult to obtain interspecies hybridomas that secrete human antibodies, because such hybrids must retain both of the two human chromosomes that carry the rearranged genes for the human light and heavy immunoglobulin chains3'4. ...
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    Is myosin in the cochlea a basis for active motility? (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 491-492 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Myosin was detected in the hair cells of the guinea pig cochlea by indirect immunofluorescence using an antiserum raised against human smooth muscle myosin4. Immunofluorescence was visible in very specific areas of the organ of Corti. The stereocilia fluoresced strongly along their length (Fig. ...
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    Telecommunication: Monopoly in doubt (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 312-312 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Sir Keith Joseph, allegedly the British Cabinet's hard man on monetarism and other issues of grand policy, last week published a soft, even muddled, bill for the reorganization of the nationalized British telecommunications industry. The bill, which the government hopes will be law before the end ...
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    Malaysian education: Pressures ease (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 312-313 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Kuala Lumpur Faced with internal racial pressures and a growing concern about academic quality, educational authorities in Malaya seem to be easing up slightly on the harshness of previous measures to reform the country's education system. Two aspects of this policy have come under particular ...
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    Soviet fertilizers: Going it alone (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 314-314 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Fertilizer production has been hived off from the Soviet Ministry of the Chemical Industry and now merits a ministry of its own, under Minister Aleksei Petrishchev, previously deputy chairman of the State Committee for Material and Technical Supply. At the same time, a new Minister of the Chemical ...
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    Medical education (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 316-316 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR - In the article "Medical schools stay" (Nature 6 November, p.6) you say that King's College Hospital Medical School is reprieved. The Flowers Report did not in fact envisage the closure of King's College Hospital Medical School but suggested a fusion with Guy's Hospital, the product to be ...
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    100 years ago (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 318-318 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Herr V. Bergso, in a recent work, "Fra Mark og Skov," has given some interesting data in regard to the habits of the Tarentula, Lycosa tarentula, Latr., whose nests he has traced and examined on the Roman Campagna. He found that the nest, which was well rounded and smooth, was approached by a ...
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    Genes controlling cell proliferation (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 319-319 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] AN attractive hypothesis for the control of eukaryotic cell proliferation is that it is regulated at a particular point during the G j period before the initiation of DNA replication. This Gj control has been called the 'restriction point' in mammalian cells (Pardee, A. B. Proc. natn. A cad. Sei. ...
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    Refrigerator brew (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 208-208 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR-One of the problems associated with Legionnaires' disease lies in the tracking down of the source of infection. Air conditioning systems seem to be prime suspects. So far as I am aware, nobody has thought of looking behind refrigerators. Having had occasion to do this recently, I was taken ...
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    Deep drilling in African lakes (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 211-212 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE climatic environmental history of Africa is a major unknown on a time scale from thousands to millions of years. So far as the Pleistocene is concerned, we are building up a fairly complete picture of the characteristics of climatic change, both on the northern continents and over the oceans. ...
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    Green light in Heidelberg (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 215-217 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE 200 or so molecular biologists who attended the sixth EMBO symposium* in Heidelberg spent 3 !/2 days discussing gene organization and expression in green plants. The surprisingly large size of the audience might suggest that the organizers had found a patch of fertile ground and that the ...
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    Latitudinal beaming of planetary radio emissions (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 225-229 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The Voyager missions have revealed that jovian kilometric radiation (emanating from Jupiter's magnetosphere) is beamed away from the zenomagnetic equator. Results from GEOS 1 show that terrestrial non-thermal continuum or myriametric radiation is similarly beamed away from the geomagnetic ...
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    First pterosaur from Australia (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 361-363 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The material (Fig. 1) comprises three uncrushed specimens- the front of the fused mandibles (QM F10613), a single vertebra (QM F10614) and an isolated left scapulocoracoid (QM F10612). These were collected from flaggy limestones of the Toolebuc Formation at an unnamed locality 13 km south of ...
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    Effect of striatal cells on in vitro maturation of mesencephalic dopaminergic neurones grown in serum-free conditions (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 370-373 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Preliminary experiments indicated that the use of non-irradiated collagen markedly reduced the overall population of glial cells when mesencephalic cells of 13-day-old mouse embryos were cultured with serum. Furthermore, autoradio-graphy of the cultures (Fig. \c) after a 48-h pulse of 3H-thymidine ...
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    The obligatory role of endothelial cells in the relaxation of arterial smooth muscle by acetylcholine (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 373-376 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Descending thoracic aortas were excised from white, male, New Zeaiand rabbits (2-3 kg), and trimmed free of adhering fat and connective tissue as previously described2. Transverse rings of 2.5-rnm width were cut with scissors or with a special cutting device containing five parallel razor blades. A ...
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    Chemical cross-linking restrictions on models for the molecular organization of the collagen fibre (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 408-410 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Fig. 1 Projection of the hexagonally packed collagen molecules along their axis. The small distortions of the lattice and the slight (4) tilting of the collagen molecules are not shown. The numbers 1-5 refer to the molecular segments (see lower left) in one 66.8-nm (D) thick transverse section. The ...
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    Direct observation of a transverse periodicity in collagen fibrils (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 410-413 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Many aspects of the structure of collagen fibrils have been satisfactorily accounted for in recent years. The chain conformation in tropocollagen molecules has recently been refined by Fraser et al.13, and the axial striation patterns in positively stained aggregates of collagen have been ...
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    Telescopes of the future: heading for the supergiants (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 419-419 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] AT A time when the financial outlook for fundamental science may appear bleak, these two volumes should raise the spirits even of the pessimistic. Undaunted, more than 200 scientists and engineers gathered at Tucson, Arizona, in January 1980 to discuss how best to apply the latest technologies to ...
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    Why is magnetite not a good conductor? (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 113-113 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] MAGNETITE is a remarkable material, as the first users of lodestones were well aware. When reasonably pure, it looks and feels like a metal. Lumps of magnetite such as can be picked up in some iron mines even sound metallic when struck or thrown to the ground. It is therefore worth recalling that ...
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    Lessons from a peptidergic neurone (1980)
    [s.l.] : Nature Publishing Group
    Nature 288 (1980), S. 117-118 
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    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SECRETED polypeptides are known to begin their lives as parts of larger precursors but for many biosynthetic pathways the question persists of 'how large is larger*. This question has recently been asked for the precursors of vasopressin by Paul Cohen and his associates in Paris (Proc. natn. ...
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