Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

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

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Cultural issues in housing and planning - Tenth inter-school conference on development, University College London, 29-30 March, 1993
    Amsterdam : Elsevier
    Habitat International 18 (1994), S. 91-94 
    Details
    ISSN: 0197-3975
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Geography , Sociology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0197-3975(94)90043-4
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Fallout of thorium and uranium isotopes from the 1982 eruption of El Chichón volcano (1986)
    Springer
    Journal of radioanalytical and nuclear chemistry 99 (1986), S. 385-390 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Marked increases in the concentrations of thorium and uranium isotopes observed in rain samples collected at Fayetteville (36° N, 94° W), Arkansas, during 1983 are attributed to the fallout from the 1982 eruption of El chichón volcano in Mexico.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02037599
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Nutrient and antinutrient composition of three varieties ofPiper species (1996)
    Springer
    Plant foods for human nutrition 49 (1996), S. 133-137 
    Details
    ISSN: 1573-9104
    Keywords: Piper guineense ; Spice ; Proximate composition ; Minerals ; Antinutrients ; Ascorbate ; Varietal differences
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract The proximate composition of three varieties ofPiper guineense (Odusa — Ibibio/Efik) viz. ‘Uyat Odusa’ (cultivated and peppery), ‘Eting-keni Ikot’ (wild forest variety) and ‘Eting-keni mben inyang’ (wild, riverine variety), were determined using available standard methods. Also determined were mineral, antinutrient and ascorbate levels. The cultivated pepperic variety had the highest content of crude protein and moisture (18.9% and 97% respectively) while the wild, riverine variety had the highest content of ether extract, carbohydrate and calories (7.79%, 63.38% and 398 cals respectively). The cultivated variety had appreciable amounts of phosphorus (1.12 mg/100 g), potassium (1.2 mg/100 g), sodium (0.24 mg/100 g), zinc (0.18 mg/100 g), and copper (0.18 mg/100 g) while the forest variety contained more of calcium (12.38 mg/100 g), magnesium (1.21 mg/100 g) and iron (0.85 mg/100 g). The wild riverine variety appeared to have the least mineral content but had the highest ascorbate level of 173.4 mg/100 g. Of four antinutrients assayed, the cultivated pepperic one had the least quantities while the forest variety was highest in hydrocyanic acid (85.8 mg/100 g) and glucosinolates (0.20 mg/100 g). The wild riverine variety had the highest level of total oxalate (165.0 mg/100 g). These quantities are however far below documented toxic levels.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01091970
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Uranium isotope anomaly in minerals (1990)
    Springer
    Journal of radioanalytical and nuclear chemistry 139 (1990), S. 331-337 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract A series of leaching experiments with HF, HCl, HNO3 were carried out on samples of uranium minerals (uraninite and carnotite samples). Anomalously high234U/238U ratios were observed in some uranium fractions. The observed234U/238U activity ratios varied between the values of 1.019±0.155 and 6.210±0.504 (Ci/Ci), while the bulk carnotite sample had an activity ratio of 1.010±0.005 (Ci/Ci). These results are interpreted as due to alpha-recoil effect and changes in oxidation state of uranium.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02061819
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Environmental radioactivity in Uyo //5° N, 7° 50 E/, nigeria/ (1989)
    Springer
    Journal of radioanalytical and nuclear chemistry 137 (1989), S. 431-441 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract A survey of the environmental radioactivity in Uyo /5° N, 7° 50 E/, Nigeria has been done for the period 1981 to 1986. An overall average of 8.5±0.5 pCi is the environmental radioactivity for the surrounding air and 8.2±0.4 pCi for the top soil. Airborne α-particles were also measured using CR-39 plastic detectors. The University Campus in Uyo had an overall average α-activity of 75.3±0.8 fmCi while other sectors of the town had an average of 95.2±1.1 fmCi. Our results show a non-uniform distribution of α- and other radioactivity in Uyo.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02168350
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Contamination of the earth's surface by plutonium and uranium fallout (1991)
    Springer
    Journal of radioanalytical and nuclear chemistry 147 (1991), S. 269-275 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The239,240Pu/238U ratios in nature determined by previous and present workers have been used to evaluate the extent of plutonium and uranium fallout contamination on the earth's surface. The contamination of the earth's surface due to radioactive fallout of plutonium and uranium varies between 0.01 and 24%. The overall results show that the whole globe is affected by the fallout, thus explaining the high239,240Pu/238U ratios found in our environment today.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02040375
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Alpha-recoil atoms of plutonium in the environment (1994)
    Springer
    Journal of radioanalytical and nuclear chemistry 178 (1994), S. 165-172 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The α-recoil effect of239Pu has been observed in environmental samples and theN 5 P /N5 ratio in these samples has been calculated. This ratio in atmospheric samples is in the range between 10−5 and 10−4 (atom/atom). For other contemporary terrestrial samples it is in the range between 10−7 and 10−6 (atom/atom), while that of uranium mineral is about 10−10 (atom/atom). The results further explain the radioactive fallout contamination of our environment by uranium and plutonium isotopes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02068667
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Thorium, uranium and plutonium isotopes in the Arkansas River (1989)
    Springer
    Journal of radioanalytical and nuclear chemistry 131 (1989), S. 369-375 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Radiochemical measurements of the concentrations of thorium, uranium and plutonium isotopes were carried out for the samples of Arkansas River collected at six locations in the states of Colorado and Oklahoma. The uranium to thorium ratios in the river samples were found to be highly variable and generally much greater than the ratios found in soils and in rainwater. An attempt has been made to determine the apparent230Th ages (or the times which elapsed since the last major disruption of the radioactive equilibria) from the observed230Th/232Th and234U/232Th ratios in the water samples.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02060602
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Environmental radioactivity in the Eastern States of Nigeria (1992)
    Springer
    Journal of radioanalytical and nuclear chemistry 166 (1992), S. 511-519 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract A survey of the environmental radioactivity in the Eastern States of Nigeria, consisting of Akwa Ibom and Corss River States has been done and that of Uyo (5°N, 7°50′E), Nigeria, has been updated for the period of 1981 to 1991. An overall average of 329.7±13.3 mBq is the environmental radioactivity for the surrounding air in Akwa Ibom State, while 348.5±13.7 mBq is the activity for the air in Cross River State. There has been a marked increase of average environmental radioactivity in Uyo from 293.0±12.6 mBq to 373.7±14.8 mBq in recent years with a yearly mean of 324.1±13.7 mBq.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02163534
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Fallout of uranium isotopes from the 1980 eruption of Mount St. Helens (1984)
    Springer
    Journal of radioanalytical and nuclear chemistry 84 (1984), S. 23-32 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract A marked increase in the concentration of238U in rain was observed at Fayetteville (36 °N, 94 °W), Arkansas, after the 18 May 1980 eruption of Mount St. Helens. The fallout of natural uranium observed during the summer months of 1980 can be attributed to the 18 May 1980 events, which ejected an amount of ash material on the order of 4 km3 or about 8·1015 grams into the atmosphere.234U and235U were found to be highly enriched relative to238U in several rain samples collected at Fayetteville, Arkansas, prior to the volcanic eruption. The anomalous uranium seems to have originated from the Soviet satellite Cosmos-954, which fell over Canada, on 24 January 1978. The effect of the 25th Chinese nuclear test, which occurred on 16 October 1980, on the concentrations of uranium isotopes in rain appears to have been insignificant.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02038178
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...