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  • 1
    Electronic Resource
    Electronic Resource
    Determination of inorganic and organic traces in the clean room compartment of Antarctica
    Amsterdam : Elsevier
    Analytica Chimica Acta 283 (1993), S. 230-245 
    Details
    ISSN: 0003-2670
    Keywords: Biogenic halogenated methanes ; Gas chromatography ; Halogens ; Heavy metals ; Iodine cycle ; Ion chromatography ; Isotope dilution analysis ; Mass spectrometry ; Nitrate cycle ; Trace detection
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0003-2670(93)85227-B
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  • 2
    Electronic Resource
    Electronic Resource
    Time-resolved spectra of excited-state absorption in Er3+ doped YAlO3 (1992)
    Springer
    Applied physics 54 (1992), S. 404-410 
    Details
    ISSN: 1432-0630
    Keywords: 07.65 ; 35.00 ; 42.55 R
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract A pump- and probe-beam technique is used for measuring time-resolved excited-state absorption (ESA) and stimulated-emission (SE) spectra of Er3+ doped YAlO3. The Er3+ 4 I 15/2 → 4 F 7/2 transition of the sample is excited at 488 nm by an excimer laser pumped dye laser. The ESA and SE of broadband xenon flashlamp light is monitored between 300 and 860 nm by an optical multichannel analyzer (OMA). The analysis of the experimental results provides information on the effective cross sections σESA and σSE originating from several levels and on the populations of these levels. To our knowledge this represents the first detailed investigation of time-resolved ESA and SE over a broad spectral range in rare-earth doped materials.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00324164
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  • 3
    Electronic Resource
    Electronic Resource
    Effects of heavy metals on growth and ultrastructure ofChara vulgaris (1987)
    Springer
    Protoplasma 136 (1987), S. 37-48 
    Details
    ISSN: 1615-6102
    Keywords: Chara ; Fine structure ; Growth ; Heavy metals
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The toxicity of some heavy metals to the common macrophytic freshwater algaChara vulgaris was studied under laboratory conditions. For experiments, apical tips of algae containing two internodes were cultivated for fourteen days in the presence of various concentrations of cadmium, mercury or lead (as triethyl lead or lead nitrate). Fifty percent growth inhibition occurred with concentrations of 8.5×10−8 M (9.5 ppb) cadmium, 7.5×10−7M (150ppb) mercury, 1.6×10−6 M (330ppb) organic lead or 4× 10−5 M (8000 ppb) inorganic lead. Sublethal concentrations of these metals caused alterations in the fine structure of internodal cells which turned out to be at least partly metal-specific or in the case of lead, the effects depended on whether the lead was ionic or organically bound. Cadmium and inorganic lead induced disorders of cell wall microfibrils which resulted in local wall protuberances. Mercury affected the chloroplasts which mostly showed considerably increased grana stacks. In addition, mercury caused a dilation of the endoplasmic reticulum and of the mitochondrial tubuli. Organic lead damaged the membrane system of chloroplasts; sheet- or tubule-like thylakoids were disarranged and showed whorl-like structures. At higher concentrations of organic lead, tubular invaginations of the plasmalemma (“charasomes”) disappeared. The fine structure of nuclei was not altered by any of the metals.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01276316
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  • 4
    Electronic Resource
    Electronic Resource
    Carotenoids of Rhizobia. I. New Carotenoids from Rhizobium lupini (1977)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 60 (1977), S. 254-258 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The main pigments of Rhizobium lupini were 2,3,2′,3′-di-trans-tetrahydroxy-β,β-caroten-4-one and 2,3,2′,3′-di-trans-tetrahydroxy-β,β-carotene. As minor components 7,8,7′,8′-tetrahydro-ψ, ψ-carotene (ζ-carotene), β, β-carotene (β-carotene), and tentatively, a 2,3,2′(or 3′)-trihydroxy-β, β-caroten-4-one and a 2,3,2′(or 3′)-trihydroxy-β, β-carotene were identified.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19770600131
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  • 5
    Electronic Resource
    Electronic Resource
    Synthese des Indigos mittelst Phenylglycin (1890)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 42 (1890), S. 520-520 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.18900420148
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  • 6
    Electronic Resource
    Electronic Resource
    Zur Indigodarstellung mittelst Phenylglycin (1890)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 43 (1890), S. 111-112 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.18900430110
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  • 7
    Electronic Resource
    Electronic Resource
    Ueber Lithofellinsäure (1842)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 41 (1842), S. 303-306 
    Details
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.18420410306
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  • 8
    Electronic Resource
    Electronic Resource
    Zur Kenntniss einiger Ultramarinverbindungen (1880)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 201 (1880), S. 262-291 
    Details
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.18802010205
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  • 9
    Electronic Resource
    Electronic Resource
    Bildung und Zerlegung von Schwefelmetallen (1874)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 173 (1874), S. 21-39 
    Details
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.18741730106
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  • 10
    Electronic Resource
    Electronic Resource
    Beiträge zur Theorie leuchtender Flammen (1876)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 183 (1876), S. 102-141 
    Details
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.18761830104
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