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  • 1
    Electronic Resource
    Electronic Resource
    Influence of Stationary Phase Chemistry on Shape Recognition in Liquid Chromatography (1995)
    s.l. : American Chemical Society
    Analytical chemistry 67 (1995), S. 3284-3292 
    Details
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ac00114a027
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  • 2
    Electronic Resource
    Electronic Resource
    Synergistic action of ozone-sulfur dioxide on peanuts (1969)
    s.l. : American Chemical Society
    Environmental science & technology 3 (1969), S. 759-760 
    Details
    ISSN: 1520-5851
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/es60031a010
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Toxins of Marine Origin (1968)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Pharmacology 8 (1968), S. 409-426 
    Details
    ISSN: 0362-1642
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Medicine , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.pa.08.040168.002205
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  • 4
    Electronic Resource
    Electronic Resource
    Certification of a Frozen Mussel Tissue Standard Reference Material (SRM 1974a) for Trace Organic Constituents (1997)
    Springer
    Fresenius' journal of analytical chemistry 358 (1997), S. 431-440 
    Details
    ISSN: 1432-1130
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract  NIST SRM 1974a, Organics in Mussel Tissue (Mytilus edulis), has been issued as a frozen tissue homogenate with certified mass fractions for 15 polycyclic aromatic hydrocarbons (PAHs), 20 polychlorinated biphenyl (PCB) congeners, and 7 chlorinated pesticides. Noncertified mass fractions are provided for an additional 18 PAHs, 4 PCB congeners, 4 chlorinated pesticides, 28 inorganic constituents, 16 aliphatic hydrocarbons, and methylmercury. The mass fractions for the measured PAHs range from approximately 1 μg/kg to 164 μg/kg dry mass while the mass fractions for the measured PCB congeners range from approximately 3 μg/kg to 150 μg/kg dry mass.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002160050442
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  • 5
    Electronic Resource
    Electronic Resource
    Certification of morphine-3-β-D-glucuronide in a human urine standard reference material (1997)
    Springer
    Fresenius' journal of analytical chemistry 357 (1997), S. 373-378 
    Details
    ISSN: 1432-1130
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract  The U.S. National Institute of Standards and Technology (NIST) has developed and certified a standard reference material, SRM 2382, for use in testing for bias in the determination of morphine present as a glucuronide in human urine. This SRM consists of three levels of morphine-3-β-D-glucuronide (M-3-G) in lyophilized urine. Two independent hydrolysis procedures, enzymatic and acidic, for quantitative release of morphine were investigated. The results of hydrolysis efficiency from these two procedures agreed well. These two hydrolysis procedures along with two analytical methods developed previously for measurement of free morphine [1] were used to certify M-3-G in SRM 2382. Enzymatic hydrolysis was used with the GC/MS method and acidic hydrolysis was used with LC/MS. The results from these two pairs of methods were in good agreement, and were statistically combined to yield certified values of 209±20, 437±21, and 853±39 ng/mL for morphine, as the free base. Round-robin studies on this material among ten military laboratories demonstrated the suitability of the SRM for its intended purpose.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002160050172
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  • 6
    Electronic Resource
    Electronic Resource
    MRI of idiopathic orbital inflammatory syndrome using fat saturation and Gd-DTPA (1995)
    Springer
    Neuroradiology 37 (1995), S. 475-478 
    Details
    ISSN: 1432-1920
    Keywords: Idiopathic orbital inflammatory syndrome ; Orbital pseudotumour ; Fat saturation ; Gadolinium ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Idiopathic orbital inflammatory syndrome encompasses a group of inflammatory conditions for which no systemic or local cause can be found, and is commonly referred to as orbital pseudotumour. On conventional MRI sequences subtle areas of inflammation or enhancing tissue can easily be masked by the high signal intensity of orbital fat and involvement of the fat itself may not be appreciated. We describe the MRI features of three patients with idiopathic orbital inflammation using frequency-selective fat saturation and Gd-DTPA.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00600098
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  • 7
    Electronic Resource
    Electronic Resource
    MRI of the anterior optic pathways following enucleation (1997)
    Springer
    Neuroradiology 39 (1997), S. 815-817 
    Details
    ISSN: 1432-1920
    Keywords: Key words Enucleation ; Optic nerve ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We examined five patients who had enucleation of one eye for inflammatory or neoplastic disease, using MRI at 1.5 Tesla. None had symptoms referable to the enucleated orbit. In addition, age- and-sex matched individuals were imaged as control subjects, and a further 15 subjects, referred for other than orbital disease, were reviewed. Measurements were made retrospectively of the dimensions of the optic chiasm to establish normal values. All five patients showed abnormalities on MRI following enucleation: abnormal signal within the optic nerve remnant on short τ inversion recovery (STIR) images, and atrophy of the nerve remnant and the chiasm. These findings were not apparent in the control or normal subjects. Such findings are to be expected following enucleation and should not be interpreted as indicating active pathology.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002340050511
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  • 8
    Electronic Resource
    Electronic Resource
    MRI of idiopathic orbital inflammatory syndrome using fat saturation and Gd-DTPA (1995)
    Springer
    Neuroradiology 37 (1995), S. 475-478 
    Details
    ISSN: 1432-1920
    Keywords: Key words Idiopathic orbital inflammatory syndrome ; Orbital pseudotumour ; Fat saturation ; Gadolinium ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Idiopathic orbital inflammatory syndrome encompasses a group of inflammatory conditions for which no systemic or local cause can be found, and is commonly referred to as orbital pseudotumour. On conventional MRI sequences subtle areas of inflammation or enhancing tissue can easily be masked by the high signal intensity of orbital fat and involvement of the fat itself may not be appreciated. We describe the MRI features of three patients with idiopathic orbital inflammation using frequency-selective fat saturation and Gd-DTPA.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00600098
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    Use of a naphthylethylcarbamoylated-β-cyclodextrin chiral stationary phase for the separation of drug enantiomers and related compounds by sub- and supercritical fluid chromatography (1996)
    New York, NY [u.a.] : Wiley-Blackwell
    Chirality 8 (1996), S. 325-331 
    Details
    ISSN: 0899-0042
    Keywords: enantiomeric separation ; chiral recognition ; derivatized cyclodextrin ; supercritical fluid chromatography ; drug analysis ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Enantiomeric separation of a variety of drugs and related compounds was achieved on an (S)-naphthylethylcarbamoylated-β-cyclodextrin (S-NEC-CD) chiral stationary phase (CSP) using sub- and supercritical fluid chromatography (SFC). Compounds previously resolved on native or derivatized cyclodextrin CSPs in liquid chromatography (LC) using reversed phase or polar organic mobile phase modes could be resolved in SFC using a simple carbon dioxide/methanol eluent. Resolution of cromakalim, which is not possible on the S-NEC-CD column in LC, was readily accomplished in SFC. The importance of modifier, temperature, and pressure was assessed in relation to retention, selectivity, and resolution. The nature of the modifier and the modifier concentration were found to be crucial parameters. © 1996 Wiley-Liss, Inc. Contribution of the National Institute of Standards and Technology. Not subject to copyright.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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    Paper (German National Licenses)
  • 10
    Electronic Resource
    Electronic Resource
    NIST reference materials to support accuracy in drug testing (1995)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 352 (1995), S. 61-65 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Substance abuse is a major problem worldwide. There is considerable emphasis placed upon testing individuals for evidence of use of controlled substances. Because the consequences of a positive test can be quite severe, laboratories conducting such tests must rigorously follow a carefully designed quality assurance program. Such a QA program should include use of reference materials to assure that the methods used to detect and quantify drugs are providing accurate results. The National Institute of Standards and Technology (NIST) supports accuracy in drugs of abuse testing by providing Standard Reference Materials (SRMs) with certified concentrations of drugs of abuse in urine- and hair-based reference materials. NIST, working in collaboration with the College of American Pathologists (CAP), has developed urine-based SRMs for marijuana metabolite, cocaine metabolite, morphine and codeine, and morphine glucuronide and CAP Reference Materials for amphetamines and phencyclidine. Certification measurements performed at NIST involve two independent methods for each analyte, one of which always uses GC/MS with the other usually being an LC method with either MS or UV detection. Work has recently been completed on a seven component drug in urine SRM. In addition NIST conducts research in the analysis of hair for drugs of abuse. To assist laboratories testing hair for that purpose, NIST has developed two drugs in hair reference materials.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00322298
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