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  • Springer  (31)
  • PANGAEA  (4)
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  • 1
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    (Table 1) Palynological investigation at DSDP Hole 28-274 north-northeast of Cape Adare, Antarctic
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: 28-274; Abundance; AGE; Antarctic Ocean/CONT RISE; Deep Sea Drilling Project; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Glomar Challenger; Leg28; Sample code/label; Sample code/label 2
    Type: Dataset
    Format: text/tab-separated-values, 51 data points
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  • 2
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    (Table 5) Relative abundance of pollen and spores in mid-Pliocene sediments of DSDP Hole 28-274 north-northeats of Cape Adare, Antarctic
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: 28-274; Antarctic Ocean/CONT RISE; Araucariacites australis; Asteropollis asteroides; Coptospora sp.; Deep Sea Drilling Project; DEPTH, sediment/rock; Dilwynites tuberculatus; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Glomar Challenger; Leg28; Leptolepidites verrucatus; Microcachryidites antarcticus; Nothofagidites asperus; Nothofagidites brachispinulosa; Nothofagidites flemingii; Nothofagidites lachlaniae; Nothofagidites senectus; Nothofagidites sp.; Nothofagidites spp.; Phyllocladidites mawsonii; Pollen, total; Pollen indeterminata; Proteacidites parvus; Rugulatisporites sp.; Sample code/label; Spores indeterminata; Tricolpites asperimarginatus; Tricolpites sp.
    Type: Dataset
    Format: text/tab-separated-values, 54 data points
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  • 3
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    Mid-Pliocene diatom and palynological assemblages north-northeast of Cape Adare, Antarctica
    PANGAEA
    In:  Supplement to: Fleming, R Farley; Barron, John A (1996): Evidence of Pliocene Abthofagus in Antarctica from Pliocene marine sedimentary deposits (DSDP Site 274). Marine Micropaleontology, 27(1-4), 227-236, https://doi.org/10.1016/0377-8398(95)00062-3
    Details
    Publication Date: 2023-06-27
    Description: Microfossil assemblages in Pliocene sediments from DSDP Site 274 (68°59.81'S, 173°2564'E) provide data on the age of the sediments and suggest the presence of Nothofagus (southern beach) in Antarctica during the Pliocene. A suite of 17 samples was collected in an interval from Samples 28-274-6R-1, 83-87 cm to 28-274-11R-4, 73-77 cm (48.33-100.29 mbsf). Biostratigraphic study of the abundant diatom assemblages combined with published radiolarian data indicates that the sample interval ranges in age from 5.0 to 2.2 Ma, with an apparent unconformity between about 3.8 and 3.2 Ma. Nothofagidites (the genus for fossil pollen referable to Nothofagus) occurs throughout the interval, as well as pollen and spores with known stratigraphic ranges that unequivocally indicate reworking from older rocks. Species of Nothofagidites recovered include N. asperus, N. brachyspinulosus, N. flemingii, N. senectus, and N. sp. cf. N. lachlaniae; the latter form is previously known from the Sirius Group in the Transantarctic Mountains. Abundant palynomorphs were recovered in only three of the samples from Site 274 (Samples 28-274-9R-2,15-19 cm; 28-274-9R-2,48-52 cm; and 28-274-9R-2,65-69 cm). Based on the diatom and radiolarian biostratigraphic data, the ages of these samples range from 3.00 to 3.01 Ma. The relative abundance of N. sp. cf. N. lachlaniae in the three samples is an order of magnitude higher than relative abundances for the other species of Nothofagidites in the same samples. The signiticantly higher relative abundance of N. sp. cf. N. luchlaniae suggests that this pollen was derived from trees of Nothofugus that were living in Antarctica during the mid Pliocene. Diatom assemblages from these three samples indicate that sediments in this interval were rapidly deposited as biogenic oozes in an open-ocean setting relatively free of sea ice, thus decreasing the possibility of reworking from a single source bed rich in N. sp. cf. N. lachlaniae. Clearly, more detailed work in additional well-dated cores from around Antarctica is needed before a clear picture of the Neogene history of Antarctic terrestrial vegetation emerges.
    Keywords: 28-274; Antarctic Ocean/CONT RISE; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Glomar Challenger; Leg28
    Type: Dataset
    Format: application/zip, 3 datasets
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  • 4
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    (Table 2) Relative abundance of diatoms in mid-Pliocene sediments of DSDP Hole 28-274 north-northeats of Cape Adare, Antarctic (1996)
    PANGAEA
    Details
    Publication Date: 2023-07-10
    Keywords: 28-274; Actinocyclus actinochilus; Actinocyclus dimorphus; Actinocyclus ingens; Antarctic Ocean/CONT RISE; Asteromphalus sp.; Chaetoceros spores; Deep Sea Drilling Project; DEPTH, sediment/rock; Diatoms; Diatoms, reworked; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Eucampia antarctica; Glomar Challenger; Leg28; Nitzschia barronii; Nitzschia curta; Nitzschia interfrigidaria; Nitzschia ritscheri; Nitzschia sp.; Nitzschia spp.; Paralia sulcata; Rhizosolenia spp.; Rouxia spp.; Sample code/label; Stellarima spp.; Stephanopyxis spp.; Thalassionema nitzschioides; Thalassiosira insigna; Thalassiosira inura; Thalassiosira kolbei; Thalassiosira oestrupii; Thalassiosira oliverana; Thalassiosira sp.; Thalassiosira spp.; Thalassiosira torokina; Thalassiosira vulnifica; Thalassiothrix longissima
    Type: Dataset
    Format: text/tab-separated-values, 93 data points
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  • 5
    Electronic Resource
    Electronic Resource
    Clearance of arsenic ingested by man from arsenic contaminated fish (1979)
    Springer
    Bulletin of environmental contamination and toxicology 22 (1979), S. 224-229 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02026934
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    The early effects of sympathectomy on bone blood flow (1984)
    Springer
    Calcified tissue international 36 (1984), S. 622-624 
    Details
    ISSN: 1432-0827
    Keywords: Sympathectomy ; Microspheres ; Bone blood flow
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Summary Several laboratories, including our own, have investigated the physiology of bone blood flow by perfusion of the tibia via the nutrient artery. Any damage caused to the nerve supply by cannulation of the artery might affect the results. The possible effect of such damage was investigated by measuring blood flow to the dog tibia using a microsphere technique, before and after sympathectomy. No effect was found and the tibial nutrient artery is therefore a suitable vessel for perfusion when estimating nutrient exchange in bone.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02405377
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  • 7
    Electronic Resource
    Electronic Resource
    Enhanced cohesion of photo-oxygenated fullerene films: A new opportunity for lithography (1993)
    Springer
    Applied physics 57 (1993), S. 299-303 
    Details
    ISSN: 1432-0630
    Keywords: 61.46 ; 33.80.Gj ; 82.50
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract The irradiation of sublimed fullerene (C60 and C70) thin films with ultraviolet light in an oxygen-rich ambient has been found to lead to a substantially increased cohesive energy in the fullerene solid. The decreased solubility and lower vapor pressure of the phototransformed material enables wet (organic solvents) or dry (thermal or photon-induced sublimation) development of photo-defined negative images. One micrometer wide lines with good edge definition are demonstrated. X-ray, infrared, optical absorption, and high performance liquid chromatography reveal that photo-oxygenated C60 retains its fcc crystal structure but with a substantial fraction of the C60 molecules modified with carbonyl (C=O) bonds.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00332606
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  • 8
    Electronic Resource
    Electronic Resource
    Prediction of Breaking Strength in Osteoporotic Avian Bone Using Digitized Fluoroscopy, a Low Cost Radiographic Technique (2000)
    Springer
    Calcified tissue international 67 (2000), S. 309-313 
    Details
    ISSN: 1432-0827
    Keywords: Key words: Osteoporosis — Radiography — Bone breaking strength — Avian bone — Fluoroscopy.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Abstract. Bone fragility in caged laying hens is a severe welfare problem, with fracture incidences in commercial flocks of up to 30% of all hens during their life. This fragility has been attributed to osteoporosis, the etiology of which is multifactorial in birds, as in humans, with genetic, environmental, and nutritional components. Greater understanding of the development of the disorder in hens could be obtained from the same kind of in vivo assessments available in human studies of osteoporosis. These high technology techniques for evaluation of bone mineral density (BMD), such as single or dual energy X-ray absorptiometry (SXA or DXA), quantitative computerized tomography (QCT), or attenuation by ultrasound (US), are so far not widely available to nonclinical researchers. We have modified an older X-ray film technique, radiographic absorptiometry (RA) by digitization of the analog video signal from a Philips BV-25 image intensifier, in single pulse fluoroscopy mode, and subsequent computer analysis with the public domain software package, NIH-Image 1.60. Compared with conventional RA, which uses standard X-ray film, our modified technique reduces X-ray exposure and allows the operator to digitize, store, and analyze many more images in a shorter time. We have called this modified technique ``digitized fluoroscopy'' (DF). In a longitudinal study of humeral radiographic density in a flock of 165 laying hens, significant relationships (P 〈 0.001) were observed between assessments made as early as 25 weeks, utilizing this DF technique in the humerus, and breaking strengths (and other postmortem indicators of osteoporosis) measured at 70 weeks. We conclude that DF can predict some eventual parameters of bone mass measured at 70 weeks from 25 to 40 weeks onward in bones from the same site in laying hens. The relationship between DF measurements made in the humerus and postmortem measurements of radiographic density and breaking strength made at another site (tibia) are less strong but still significant from 40 weeks onward.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002230001120
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  • 9
    Electronic Resource
    Electronic Resource
    Thermoluminescence and hydroxyl defects associated with broad-band infra red absorption in synthetic quartz (1990)
    Springer
    Physics and chemistry of minerals 17 (1990), S. 27-33 
    Details
    ISSN: 1432-2021
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: Abstract A study has been made of thermoluminescence from synthetic quartz with varying hydroxyl impurity concentrations up to approximately 300 H/106 Si which are associated with a “broad-band” IR absorption in the range 2600–3700 cm−1. These hydroxyl defects are known to be important in the hydrolytic weakening of quartz. We have found only minor differences in the glow curves of unheated crystals but significant intensity increases when “wet” crystals are heated sufficiently to cause bubble formation. It would seem that the electron traps are unaffected by the bubble formation, but the electron/luminescence centre radiative recombination probability is increased.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00209222
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  • 10
    Electronic Resource
    Electronic Resource
    The temperature dependence of space charge accumulation in cross-linked polyethylene (1997)
    Springer
    Journal of thermal analysis and calorimetry 50 (1997), S. 19-31 
    Details
    ISSN: 1572-8943
    Keywords: LIPP ; polyethylene ; space charge
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract This paper presents the results of laser-induced-pressure-pulse (LIPP) measurements of space charge accumulation in 0.5 mm thick planar XLPE samples with aluminium electrodes, over the temperature range 30–90°C. The applied field strength was 10 kV mm−1. The increase in transit time of the pressure pulse across the sample with increasing temperature indicated that Young's modulus decreased by 50% from 30 to 90°C. It was concluded that electrons injected at the cathode are transported to the anode at temperatures above 40°C, and that electron traps cause an accumulation of negative charge immediately adjacent to both cathode and anode. It appears that a concentration of impurity molecules accumulates close to the cathode, and field-assisted thermal ionisation of these molecules generates an immobile positive space charge adjoining the electronic space charge adjacent to the cathode.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01979546
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