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  • 1
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    Plan for living on a restless planet set NASA's solid earth agenda (2003)
    In:  Eos, Trans., Am. Geophys. Un., Warszawa, Polish Geothermal Association, vol. 84, no. 45, pp. 485, 491, pp. B05406, (ISSN: 1340-4202)
    Details
    Publication Date: 2003
    Keywords: Crustal deformation (cf. Earthquake precursor: deformation or strain) ; Geodesy ; Global Positioning System ; InSAR ; Strain ; Stress
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    BIBLIOGRAPHY SEISMOLOGY
  • 2
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    Mass mortality and its environmental and evolutionary consequences (1982)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1982-04-16
    Description: The latest Mesozoic and earliest Tertiary sediments at Deep Sea Drilling Project site 524 provide an amplified record of environmental and biostratographic changes at the end of Cretaceous. Closely spaced samples, representing time intervals as short as 10(2) or 10(3) years, were analyzed for their bulk carbonate and trace-metal compositions, and for oxygen and carbon isotopic compositions. The data indicate that at the end of Cretaceous, when a high proportion of the ocean's planktic organisms were eliminated, an associated reduction in productivity led to a partial transfer of dissolved carbon dioxide from the oceans to the atmosphere. This resulted in a large increase of the atmospheric carbon dioxide during the next 50,000 years, which is believed to have caused a temperature rise revealed by the oxygen-isotope data. The lowermost Tertiary sediments at site 524 include fossils with Cretaceous affinities, which may include both reworked individuals and some forms that survived for a while after the catastrophe. Our data indicate that many of the Cretaceous pelagic organisms became extinct over a period of a few tens of thousands of years, and do not contradict the scenario of cometary impact as a cause of mass mortality in the oceans, as suggested by an iridium anomaly at the Cretaceous-Tertiary boundary.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hsu, K J -- He, Q -- McKenzie, J A -- Weissert, H -- Perch-Nielsen, K -- Oberhansli, H -- Kelts, K -- Labrecque, J -- Tauxe, L -- Krahenbuhl, U -- Percival, S F Jr -- Wright, R -- Karpoff, A M -- Petersen, N -- Tucker, P -- Poore, R Z -- Gombos, A M -- Pisciotto, K -- Carman, M F Jr -- Schreiber, E -- New York, N.Y. -- Science. 1982 Apr 16;216(4543):249-56.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17832725" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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    PAPER CURRENT
  • 3
    Electronic Resource
    Electronic Resource
    Determination of the provenance of majolica ceramics from Europe by thermoluminescence employing principal components (1997)
    Springer
    Fresenius' journal of analytical chemistry 358 (1997), S. 529-532 
    Details
    ISSN: 1432-1130
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Thermoluminescence data, obtained from majolica pottery after irradiation in the laboratory with gamma rays, were studied using the principal components technique to determine if the places of manufacture of this ceramic are differentiated one from another. A total of ten provenances in Holland, Spain and Italy was established by principal components. Six variables were used for the statistical analysis: the three glow-peaks positions, the relative intensity of the second peak to the first peak, the relative intensity of the third peak to the first peak, and the area under the glow curve.The precision for these parameters was about ± 5%, but the precision of the variables for a suite of standards was much higher. In addition, two groups of sherds collected in Latin America, and previously assigned to the provenances of Cataluna and Sevilla (Spain) by artistic criteria, were investigated in this study. All six samples of Cataluna agreed well with their previous assignment of provenance, but several of the samples assigned previously to Sevilla were not related unambiguously to this provenance, although they were with certainty excluded from other provenances.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002160050460
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  • 4
    Electronic Resource
    Electronic Resource
    Baculovirus expression of mammalian G protein α subunits
    Amsterdam : Elsevier
    FEBS Letters 304 (1992), S. 157-162 
    Details
    ISSN: 0014-5793
    Keywords: Baculovirus ; GTP-binding protein ; Heterologous expression
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0014-5793(92)80609-K
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  • 5
    Electronic Resource
    Electronic Resource
    A simple preparation of calibration curve standards of134Cs and137Cs by serial dilution of a standard reference material (1990)
    Springer
    Journal of radioanalytical and nuclear chemistry 140 (1990), S. 331-340 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Two sets of calibration standards for134Cs and137Cs were prepared by small serial dilution of a natural matrix standard reference material, IAEA-154 whey powder. The first set was intended to screen imported milk powders which were suspected to be contaminated with134Cs and137Cs. Therefore the concentration range of the calibration standards were about 40–400 Bq/kg. The precision of the preparation of the standard with about 7 Bq/kg of134Cs and 39 Bq/kg of137Cs at measurement time was 7.4% and 3.2%, respectively. The preparation of a similar standard by spiking the matrix with radioisotope solutions resulted in a poorer precision, about double that of the former technique. The other set of calibration standards was prepared to measure the environmental levels of137Cs in commercial Venezuelan milk powders. Their concentration ranged from 3–10 Bq/kg of137Cs. The accuracy of these calibration curves was checked by using IAEA-152 and A-14 milk powders. Their measured values were in good agreement with their certified values. Finally, it is shown that these preparation techniques by serial dilution of a standard reference material were simple, rapid, precise, accurate and cost-effective.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02039505
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  • 6
    Electronic Resource
    Electronic Resource
    Certification of VL-2, a Venezuelan lateritic material as a standard reference material (1992)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 342 (1992), S. 299-305 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary A description of the preparation and certification of a second lateritic material (high in SiO2 content) from Venezuela is presented. The certification was based on the results from an intercomparison study of fourteen international laboratories after the bottled samples were considered to be homogeneous. The proposed values (the median) for the main constituents are: Al2O3: 27.03%; Fe2O3: 32.28%; SiO2: 20.24%; TiO2: 3.00% and LOI: 16.26%. The following statistical parameters are also given for each component: the mean, the range of values, the 95% confidence limits of the mean, the geometric mean, the variance, the standard deviation; the coefficient of variation, the standard error of the mean, the standard error of the standard deviation, the coefficient of skewness, the coefficient of kurtosis, the dominant cluster mode, the Gastwirth median, the median and its 95% confidence limits. Finally, the frequency distributions of the results for the various components are shown, which were discriminated by their analytical method.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00322174
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  • 7
    Electronic Resource
    Electronic Resource
    Certification of SLB-1, a Suriname lateritic bauxite material as a standard reference material (1992)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 342 (1992), S. 306-311 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary A description of the preparation and certification of a third lateritic material, a lateritic bauxite (high in Al2O3 content) from Suriname is presented. The certification was based on the results from an intercomparison run of eight different international laboratories by various analytical techniques after the bottled samples were considered to be homogeneous. The proposed values (the median) for the main constituents are: Al2O3: 45.50%; Fe2O3: 24.03%; SiO2: 1.93%; TiO2: 1.75% and LOI: 26.38%. The following statistical parameters are also given for each component: the mean, the range of values, the 95% confidence limits of the mean, the geometric mean, the variance, the standard deviation, the coefficient of variation, the standard error of the mean, the standard error of the standard deviation, the coefficient of skewness, the coefficient of kurtosis, dominant cluster mode, the Gastwirth median, the median and its 95% confidence limits. Finally, the frequency distributions of the results for the various components are shown, which were discriminated by their analytical method.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00322175
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  • 8
    Electronic Resource
    Electronic Resource
    Characterization of a kaolinite reference material: SMP/K1-001 (1995)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 351 (1995), S. 164-172 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The description, sample preparation and evaluation of the data from an interlaboratory comparison study of a kaolinite reference material from Argentine is presented. The evaluation compared the mean, the geometric mean, the median, the Gastwirth median and dominant cluster mode parameters for assigning consensus values. The median values were SiO2: 47.68%, Al2O3: 35.25%, Fe2O3(T): 1.00%, MnO: 0.02%, MgO: 0.14%, CaO: 0.23%, Na2O: 0.09%, K2O: 1.21%, TiO2: 0.75%, P2O5: 0.08%, SO3: 0.09% and 12.48% for the LOI (loss on ignition). The following other statistical parameters were also given for each constituent: the number of values, the range of values, the 95% confidence limits for the median, the 95% confidence limits of the mean, the variance, the standard deviation, the coefficient of variation, the standard error of the mean, the standard error of the standard deviation, the coefficient of skewness and the coefficient of kurtosis. Finally, frequency distribution diagrams of values discriminating the different analytical techniques employed are presented and discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00321632
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  • 9
    Electronic Resource
    Electronic Resource
    Determination of radon-222 in a natural thermal water spring shortly before and after the July 9, 1997 earthquake (Ms=6.8) in the State of Sucre, Venezuela (1999)
    Springer
    Journal of radioanalytical and nuclear chemistry 242 (1999), S. 115-118 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The original purpose of this investigation started in 1996 was to study the radiological impact on the local population of the village of Chichiviriche de La Costa. But, soon after the major earthquake (Ms=6.8) in the state of Sucre on July 9, 1997, the objective was changed to study the fluctuation of radon (222Rn) to see if it could be correlated to seismic activity and/or if the amonlous change just before the earthquake can be considered a precusor for it. Measurements of222Rn by simply de-gassing about 250 ml of natural thermal water employing a Pylon AB-5 radiation monitor and counting the radiation after it reached equilibrium were performed. The values for four sampling periods in the first half of 1996 were about 17 Bq/l of222Rn, a month before the earthquake they were less than 15 Bq/l and increased about 70% to 25 Bq/l two days before the seismic event. In about two weeks, they returned to about 18 Bq/l. But, surprisingly, they have gradually increased to about 35 Bq/l, before leveling off at about 27 Bq/l.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02345902
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  • 10
    Electronic Resource
    Electronic Resource
    The fluctuations of indoor radon measurements from the building materials in a real situation (1994)
    Springer
    Journal of radioanalytical and nuclear chemistry 180 (1994), S. 163-169 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract In this study, we have investigated the fluctuations of radon levels in two experimental rooms constructed for secondary standard dosimetric calibration. The values over the short-term (the first two weeks) were in the range of 10–14 pCi/L of radon in air, while those of the long-term were between 6–14 pCi/L of radon. Even though the temperature and humidity was relatively constant during the second half of the rainy season, there was a trend towards lower radon values. It is concluded that ventilation is an important factor in indoor radon levels.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02039915
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