ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Aluminium; Arabian Sea; Atomic absorption spectrometry (AAS); Cadmium; Calcium; Chromium; Cobalt; Copper; Deposit type; DEPTH, sediment/rock; Description; Dredge; DRG; ELT33; ELT33.017-PC; ELT48; ELT48.006-PC; ELT50; ELT50.036-PC; ELT54; ELT54.001-PH; Eltanin; Event label; GC; Gravity corer; Identification; Indian Ocean; Iron; Lead; Lithium; Magnesium; Manganese; Molybdenum; Nickel; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; PC; Piston corer; Shackleton; Shackleton75/5; Shackleton75/5_1301a; Shackleton75/5_1303a; Shackleton75/5_1325a; Titanium; Vanadium; Zinc  (1)
  • Drug utilisation  (1)
Collection
Keywords
Publisher
Years
  • 1
    facet.materialart.
    Unknown
    PANGAEA
    In:  Supplement to: Andersen, M E (1978): Accumulation rates of manganese nodules and sediments - An alpha track method. Master thesis, University of California, San Diego, USA, unpublished
    Publication Date: 2023-08-28
    Description: Excess 230Th dominates the alpha activity of the surface regions of manganese nodules and deep sea sediments. If uranium series eguilibrium is maintained, total alpha activity depth profiles should be as useful in determining sedimentation rates as are 230Th measurements. We have used cellulose nitrate alpha track recorders pressed against manganese nodule slabs to record high resolution alpha activity "maps' of a large number of nodules. Total alpha activity profiles have also been obtained for several sediment cores. From the approximately 90 nodule profiles measured to date, 73 show simple, approximately exponential depth dependence; about 2/3 of these have inferred deposition rates of 4-10 mm/10power6 yr. Ten profiles show statistically significant breaks in slope, suggesting growth rate changes. Within single dredge hauls there is little variation in growth rates, although different portions of the same nodule sometimes exhibit different growth rates. There is no correlation between depth and measured growth rate, except for a general tendency for the few Atlantic Ocean nodules we have measured to have slightly lower rates than Pacific or Indian Ocean samples. For a number of nodules and sediments the alpha track results have been compared with 230Th-based deposition rates measured by other workers. Two nodules have 230Th rates (W. S. Broecker et al., pers. comm.) identical within errors to the alpha track determinations. A third nodule (S. Krishnaswami, pers. comm. ) and two sediment cores previously measured by Goldberg and Koide (E. Sci. and Meteoritics, 1963, p. 90} all have much slower rates based on 230Th measurements compared with the alpha track results.
    Keywords: Aluminium; Arabian Sea; Atomic absorption spectrometry (AAS); Cadmium; Calcium; Chromium; Cobalt; Copper; Deposit type; DEPTH, sediment/rock; Description; Dredge; DRG; ELT33; ELT33.017-PC; ELT48; ELT48.006-PC; ELT50; ELT50.036-PC; ELT54; ELT54.001-PH; Eltanin; Event label; GC; Gravity corer; Identification; Indian Ocean; Iron; Lead; Lithium; Magnesium; Manganese; Molybdenum; Nickel; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; PC; Piston corer; Shackleton; Shackleton75/5; Shackleton75/5_1301a; Shackleton75/5_1303a; Shackleton75/5_1325a; Titanium; Vanadium; Zinc
    Type: Dataset
    Format: text/tab-separated-values, 789 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 2
    ISSN: 1432-1041
    Keywords: Key words Anti-inflammatory agents ; Non-steroidal ; Drug utilisation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Abstract Objective: We examined to what extent the evidence of the relative gastrointestinal toxicity with non-steroidal anti-inflammatory drugs (NSAIDs) was implemented in clinical practice in Bologna, Italy, Funen, Denmark, and Stockholm, Sweden, areas with accurate computerised information on prescriptions purchased by defined populations. Methods: We ranked each NSAID by purchased volume in defined daily doses during September 1996 and compared it with the ranking of gastrointestinal complications from a meta-analysis of controlled epidemiological studies published between 1986 and 1994. We restricted our comparison to those NSAIDs that accounted for 90% of the use and within this DU90% segment we determined the proportion of “high risk” (azapropazone, ketoprofen, piroxicam) and “low risk” (ibuprofen, diclofenac) drugs with respect to gastrointestinal toxicity. Results: In Funen, Denmark, we found the best NSAID profile (63% low risk/11% high risk) while Bologna, Italy, had the other extreme (26% low risk/38% high risk), with Stockholm, Sweden, in between (43% low risk/20% high risk). Conclusion: Our study suggests that factors other than evidence-based medicine had a dominating impact on the use of prescription NSAIDs in 1996.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...