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
    Intranuclear iron deposition in hepatocytes and renal tubular cells in mice treated with ferric nitrilotriacetate (1998)
    Springer
    Virchows Archiv 433 (1998), S. 543-548 
    Details
    ISSN: 1432-2307
    Keywords: Key words Intranuclear iron deposition ; Ferric nitrilotriacetate ; Ferritin ; Renal tumours
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Cytoplasmic and intranuclear iron depositions were observed in the livers and kidneys of male and female ddY mice treated for 4–12 weeks with ferric nitrilotriacetate (Fe-NTA), a known renal carcinogen that acts through the production of free radicals. The intranuclear iron deposition consisted of a spherical aggregation of ferritin particles of approximately 10 nm diameter, as revealed by immunohistochemical staining and electron microscopy. Although the incidence of renal tumours was greater in the males than in the females, the incidence of iron depositions did not differ with gender. The most abundant intranuclear iron depositions were observed in the animals treated with Fe-NTA for the longest duration (12 weeks). These findings suggest that the intranuclear production and propagation of free radical reactions are prevented by the trapping of iron in a chemically inert iron form of ferritin.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004280050287
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Crystal Growth of Aluminum Magnesium Borides from Al-Mg-B Ternary System Solutions and Properties of the Crystals (2004)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 449-452 (Mar. 2004), p. 365-368 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Single crystals of AlMgB 〈sub〉14〈/sub〉 and AlMgB 〈sub〉22〈/sub〉 were grown from a high-temperature aluminum metal flux in an Ar atmosphere. The optimum conditions for growing AlMgB 〈sub〉22〈/sub〉 and AlMgB 〈sub〉14〈/sub〉 were established using the starting mixtures of B/Mg=0.5-1.0 and B/Mg=2.0-6.0. The AlMgB 〈sub〉14〈/sub〉 and AlMgB 〈sub〉22〈/sub〉 crystals obtained have well-developed {001} and {100} faces, and were black with a metallic luster. The maximum dimensions of these crystals were about 5.2 mm and 4.6 mm, respectively. The values of micro-Vickers hardness of the AlMgB 〈sub〉14〈/sub〉 and AlMgB 〈sub〉22〈/sub〉 crystals are in the ranges of 23.9±0.6-27.6±0.6 GPa. The oxidation process of AlMgB 〈sub〉14〈/sub〉 and AlMgB 〈sub〉22〈/sub〉 crystals were studied up to 1473 K by TG-DTA method. The susceptibility of AlMgB14 with an increase at low temperatures does not show any particular features, being indicative of a paramagnetic contribution, which is likely due to impurities. The susceptibility of the AlMgB 〈sub〉22〈/sub〉 sample shows no apparentcontribution from impurities and also does not have any anomalous behavior
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/08/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.449-452.365.pdf
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Mechanochemical Synthesis of Zinc Ferrite, ZnFe〈sub〉2〈/sub〉O〈sub〉4〈/sub〉 (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 534-536 (Jan. 2007), p. 201-204 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Mechanochemical synthesis of zinc ferrite, ZnFe2O4, was attempted from a powdermixture of iron (III) oxide, alpha-Fe2O3 and zinc (II) oxide, ZnO. Nanocrystalline zinc ferrite,ZnFe2O4 powders were successfully synthesized only by milling for 30 hours. The X-raydiffraction spectrum of the as-milled powders (without heating) showed twelve ZnFe2O4 peaks andfour weak peaks of coexisting unreacted Fe2O3. The crystallite size of the mechanochemicallysynthesizedZnFe2O4 was 26.3 nm. Evidence of the ZnFe2O4 formation was absent for the powdersmilled for 10 and 20 hours; milling lowered the crystallinity of the starting materials. Heating aftermilling enhanced the formation of ZnFe2O4, the crystal growth of ZnFe2O4 and the unreactedstarting materials. The unreacted starting materials decreased their amounts by heating at highertemperatures
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/14/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.534-536.201.pdf
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Preparation of single crystals of MoB2 by the aluminium-flux technique and some of their properties (1987)
    Springer
    Journal of materials science 22 (1987), S. 2993-2999 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Crystal growth of MoB2 (R-3m;a hex. = 0.30136(6) nm,c hex. = 2.0961 (4) nm) from high-temperature aluminium solutions (1000 to 1500°C) has been investigated, and the optimum conditions for obtaining single crystals of this compound were examined. Starting with about 33 to 53 g of a mixture of molybdenum, boron and aluminium, in which the atomic ratio is 1 : 2.5 : 53.3 to 88.9, MoB2 single crystals of about 1.5 mm in size were grown without being accompanied by any other crystal phases. The stoichiometry and the crystal structure were corroborated by chemical analysis and single-crystal X-ray diffractometry. The Vickers microhardness measured in the (001) plane is in the range 2170 to 2470 kg mm−2. The oxidation of the crystal in air is examined by thermogravimetric and differential thermal analyses up to 1200°C.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01086503
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Hydrocarbon composition of newly isolated strains of the green microalga Botryococcus braunii (1995)
    Springer
    Journal of applied phycology 7 (1995), S. 555-559 
    Details
    ISSN: 1573-5176
    Keywords: Botryococcus braunii ; microalga ; Chlorophyceae ; new strains ; hydrocarbons
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Four new strains of Botryococcus braunii were isolated from Japanese waters and cultured under defined conditions. Their hydrocarbon content and composition were analyzed and compared with those of the Darwin and Berkeley strains. The Yamanaka strain produced only alkadienes characteristic of the A race, whereas the others, the Yayoi, Kawaguchi-1 and -2 strains as well as the Darwin and Berkeley strains, produced botryococcenes peculiar to the B race. The hydrocarbon content of the Yamanaka strain was 16.1 % dry weight and that of the B race strains ranged from 9.7 to 37.9%. Botryococcene composition of the Japanese strains differed from each other as well as from the Darwin and Berkeley strains. More than 50% of the hydrocarbons in the Yayoi, Darwin, and Berkeley strains were composed of C34H58, but the main components were different from one another as isomers. The Kawaguchi-1 and -2 strains did not have a high level of C34 botryococcenes, C32 ones being the main components. In these strains significant amounts of squalene-related compounds were detected.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00003942
    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...