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  • 1
    Monograph available for loan
    Monograph available for loan
    Geochemistry and mineralogy of rare earth elements (1989)
    Washington, D.C. : 1989
    Associated volumes
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    Call number: M 93.0022/21 ; 11/M 92.0764 ; AWI G6-96-0436
    In: Reviews in mineralogy
    Description / Table of Contents: The authors of this volume presented a short course on the rare earth elements to about 80 participants in San Francisco, California, December 1-3, 1989, just prior to the fall meeting of the American Geophysical Union.
    Type of Medium: Monograph available for loan
    Pages: IX, 348 S.
    ISBN: 0-939950-25-1 , 978-0-939950-25-6
    ISSN: 1529-6466
    Series Statement: Reviews in mineralogy 21
    Classification:
    Geochemistry
    Language: English
    Note: Table of Contents: Copyright; Additional copies. - Foreword and acknowledgements. - Chapter 1. Cosmochemistry of the Rare Earth Elements: Condensation and Evaporation Processes / by William V. Boynton. - Introduction. - Meteorites. - Astrophysical context for interpretation of cosmochemical data. - Solar nebula. - Solar abundances. - Cosmochemical properties of the REE. - REE condensation reactions. - Activity coefficients. - Partial pressures. - Solid / gas distribution coefficients. - Why are the REE volatilities so different?. - Calculated REE patterns. - Early condensates. - Removing REE in the gas. - Comparison with meteoritic data. - Ultra-refractory component. - Group II inclusions. - FUN inclusions. - REE condensation as a function of oxygen fugacity. - Rims on CAI. - What have we learned from the REE?. - High temperatures were achieved in the solar nebula. - A very efficient mechanism for gas/dust separation existed in the solar nebula. - The high nebular temperatures existed for a long time. - A very intense, very brief, heat source also existed. - The solar nebula was a chaotic environment. - Summary. - Acknowledgements. - References. - Chapter 2. Radiogenic Isotope Geochemistry of Rare Earth Elements / by P. Jonathan Patchett. - Introduction. - Long-lived radioactive isotopes of Rare Earth Elements. - 138La-138Ce decay. - 147Sm-143Nd decay. - 176Lu-176Hf decay. - Cemical variations of La/Ce, Sm/Nd and Lu/Hf ratios. - Geochronological studies. - La-Ce and Lu-Hf chronology. - Sm-Nd chronology. - Defining bulk planetary isotopic evolution. - Isotopic study of planetary interiors. - The Moon. - The Earth. - Nd isotopes in studies of terrestrial crustal evolution. - Model Nd ages of continental crust. - Growth curves for the continental crust. - Origin of granitoids. - Nd isotopes and the sedimentary system. - Characterization of whole crustal terranes. - Crustal Lu-Hf isotopic studies. - Major unsolved problems. - Continental crustal growth curve. - Abundance of Archean continental crust. - Origin of mantle isotopic variations. - References. - Chapter 3. Partitioning of Rare Earth Elements between Major Silicate Minerals and Basaltic Melts / by Gordon A. McKay. - Introduction. - Usefulness of the REE for petrogenetic modelling. - Scope of this chapter. - Caveat. - How partition coefficients are measured. - Phenocryst/matrix studies of natural samples. - Experimental measurement of partition coefficients. - Basic experimental approach. - Equilibrium. - Percent level doping technique. - Beta-track mapping technique. - Other experimental approaches. - Henry's law: The applicability of percent-level doping results. - Factors governing mineral/melt partitioning. - Ionic size and charge of trace element. - Crystal field effects. - Cristallographic versus defect sites: The Henry's law question. - Phase compositions. - Oxidation state. - Thermodynamic relationships: Dependence of partitioning on temperature and composition. - Other predictive approaches. - Special applications. - Eu as an oxygen fugacity indicator. - Origin of the Eu anomaly in lunar mare basalts. - REE partition coefficient patterns for the major minerals. - Plagioclase. - Olivine. - Pyroxene. - Low-Ca pyroxene. - High-Ca pyroxene. - Garnet. - Future directions. - Acknowledgements. - References. - Chapter 4. An Approach to Trace Element Modeling Using a Simple Igneous System as an Example / by Gilbert N. Hanson. - Introduction. - Review of trace element equations. - Melting. - Fractional crystallization. - Melting versus fractional crystallization. - Essential structural constituents. - Example of petrogenetic approach. - Discussion and summary. - Acknowledgements. - References. - Chapter 5. Rare Earth Elements in Upper Mantle Rocks / by W. F. McDonough and Fredrick A. Frey. - Introduction. - Massive peridotites. - Massive peridotites: dominantly lherzolite Western Alps - Lanzo. - Western Alps -Baldissero, Balmuccia. - Eastern Liguria, Italy. - Western Liguria, Italy. - Eastern Pyrenees - France. - Ronda, Spain Effects of late stage alteration on REE. - What can be inferred about the melting process and the segregated melts?. - Massive peridotites: pyroxenite layers and veins and their wall rocks. - Amphibole-bearing pyroxenite veins. - Anhydrous pyroxenite layers. - How were the pyroxenite layers created? Evidence for multistage processes. - Implications for mantle enrichment processes (metasomatism). - Massive peridotites: dominantly harzburgite. - Oceanic peridotites. - Ultramafic xenoliths. - Group I spinel peridotites. - Garnet peridotites. - Pyroxenite and related xenoliths. - Models for REE abundance trends in peridotite xenoliths. - Megacrysts, minerals in xenoliths and damong inclusions. - Megacrysts. - Minerals in peridotites and pyroxenites. - Inclusions in diamonds. - Summary: comparison of peridotites from massifs and xenoliths and implications of REE data for Upper Mantle composition. - Acknowledgements. - References. - Chapter 6. Rare Earth Elements in Metamorphic Rocks / by Richard I. Grauch. - Introduction. - REE residence in metamorphic rocks. - REE mobility during metamorphism. - REE content of metamorphic rocks. - Suggestions for future work. - Acknowledgements. - References. - Chapter 7. Rare Earth Elements in Sedimentary Rocks: Influence of Provenance and Sedimentary Processes / by Scott M. McLennan. - Introduction. - Rare earth element properties and sedimentary rocks. - Cosmochemical considerations. - Geochemical considerations. - Aqueous geochemistry. - Normalizing and notation. - Sedimentary processes. - Weathering. - Diagenesis. - Sedimentary sorting. - REE and provenance studies. - Sedimentary rocks and crustal abundances. - Sedimentation and plate tectonics. - Archean sedimentary rocks and the Archean crust. - Archean greenstone belts. - REE in sedimentary rocks and crustal evolution. - Acknowledgements. - References. - Chapter 8. Aqueous Geochemistry of Rare Earth Elements / by Douglas G. Brookins. - Introduction. - The trivalent lanthanides (Ln III). - Types of complexes in solution. - Hydrolysis products. - Phosphate complexes. - Carbonate complexes. - Halide complexes. - Complexes with total dissolved sulfur. - Gadolinium-Terbium fractionation?. - Scandium and Yttrium. - Europium (II). - Cerium (IV). - Eh-pH diagrams. - Cerium. - Europium. - Other lanthanides. - Lanthanides in ocean waters. - Lanthanides and actinides. - Concluding remarks. - Acknowledgements. - References. - Chapter 9. Rare Earth Elements in Lunar Materials / by Larry A. Haskin. - Introduction. - The nature of planet moon. - The magma ocean hypothesis and its presumed products. - Lunar REE patterns. - Highland plutonic rocks. - Anorthosites. - Durâtes, troctolites, norites, and gabbros. - Lunar felsite (granite). - Highland volcanic rocks: KREEP. - Mare basalts. - Mare basalt sources as magma ocean products. - Assimilation of crusted material during basalt petrogenesis. - Glassy spherules. - Soils and breccias. - Caveat. - Acknowledgements. - References. - Chapter 10. Compositional and Phase Relations among Rare Earth Element Minerals / by Donald M. Burt. - Introduction. - Geochemical background. - Minerals. - Coupled substitutions. - Vector treatment. - Application to selected mineral groups. - Fluorides. - Carbonates. - Fluorocarbonates. - Monazite, xenotime, zircon, and related phases. - Apatites. - Florencite and related phases. - A-B oxides (niobates, tantalates, titanates, ferrites). - Fergusonitelbetafergusonite, ABO4. - Perovskite, ABO3. - Aeschyniteleuxenite, AB2O6. - Pyrochlore, A1-2B2O6(O,F,OH). - Allanite. - Titanite. - Garnet. - Gadolinite. - Chevkinite/perrierite. - Element distributions: acid-base relations. - Summary. - Acknowledgemen
    Location: Upper compact magazine
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  • 2
    Electronic Resource
    Electronic Resource
    Broad Spectrum Aminoglycoside Phosphotransferase Type III from Enterococcus: Overexpression, Purification, and Substrate Specificity (1994)
    s.l. : American Chemical Society
    Biochemistry 33 (1994), S. 6936-6944 
    Details
    ISSN: 1520-4995
    Source: ACS Legacy Archives
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/bi00188a024
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  • 3
    Electronic Resource
    Electronic Resource
    Ketene Acetals. XXXVI. The Preparation and Properties of Acylketene Acetals (1956)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 78 (1956), S. 6086-6091 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja01604a037
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  • 4
    Electronic Resource
    Electronic Resource
    Ketene Acetals. XXXV. Cyclic Ketene Acetals and Orthoesters from 2,2-Dimethoxy-2,3-dihydropyran (1955)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 77 (1955), S. 5601-5606 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja01626a043
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  • 5
    Electronic Resource
    Electronic Resource
    Kinetics of oral fluphenazine disposition in humans by GC-MS (1983)
    Springer
    European journal of clinical pharmacology 25 (1983), S. 709-711 
    Details
    ISSN: 1432-1041
    Keywords: fluphenazine ; pharmacokinetics ; plasma concentrations ; intersubject differences
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary The disposition of fluphenazine was investigated in six healthy volunteers following oral administration (5 mg). Using a sensitive and specific GC-MS procedure plasma fluphenazine concentrations were measured up until 32 h after drug administration. Peak plasma concentrations varied widely (range: 0.26–1.06 ng/ml) and were observed at 2.8±0.5 h following fluphenazine administration. The apparent terminal elimination half-life of fluphenazine was 33.1±8.1 h. The area under the plasma concentration-time curve differed widely between subjects (range: 7.1–28.6 ng/ml h) suggesting large interindividual differences in the extent of fluphenazine presystemic elimination.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00542363
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  • 6
    Electronic Resource
    Electronic Resource
    Interconversion between haloperidol and reduced haloperidol in healthy volunteers (1989)
    Springer
    European journal of clinical pharmacology 37 (1989), S. 45-48 
    Details
    ISSN: 1432-1041
    Keywords: haloperidol (HAL) ; reduced haloperidol (RHAL) ; interconversion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary The interconversion between haloperidol (HAL) and reduced haloperidol (RHAL) was examined following their separate administration in low (5 mg) single oral doses to 15 young healthy male volunteers in a crossover design. Using an ultrasensitive HPLC method plasma concentrations of HAL and RHAL were monitored over a period of one week following each administration. Except in one case, both the analytes were found in the plasma of all the volunteers following each administration, thereby indicating interconversion of the two compounds. Comparison of the AUC(0-t) ratios of RHAL/HAL and HAL/RHAL following administration of HAL and RHAL, respectively, revealed that the interconversion favours the reduction of HAL to RHAL. The disposition of HAL following administration of RHAL appears to be limited by its rate of formation and the disposition of RHAL following administration of HAL, on the other hand, is much slower than that of the parent compound.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00609423
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  • 7
    Electronic Resource
    Electronic Resource
    Quinidine but not quinine inhibits in man the oxidative metabolic routes of methoxyphenamine which involve debrisoquine 4-hydroxylase (1991)
    Springer
    European journal of clinical pharmacology 41 (1991), S. 471-474 
    Details
    ISSN: 1432-1041
    Keywords: Methoxyphenamine ; Quinidine ; Quinine ; genetic polymorphism ; metabolic inhibition ; drug interaction ; cytochrome P450 isoforms
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary Healthy male volunteers (n=13) took a single oral dose of 60.3 mg of methoxyphenamine HCl with and without prior administration of either quinidine (250 mg as bisulphate salt) or its diastereomer quinine (300 mg as sulphate salt). Methoxyphenamine and its N-desmethyl, O-desmethyl and aromatic 5-hydroxy metabolites were quantified in the 0–32 h urine. The oxidative routes of methoxyphenamine metabolism which had been previously shown to involve debrisoquine 4-hydroxylase, namely O-demethylation and 5-hydroxylation were both significantly inhibited by quinidine in the 12 extensive metabolizers. The inhibition was selective in that N-demethylation which does not involve this isozyme was not affected by quinidine. In all but one of these volunteers the methoxyphenamine/O-desmethylmethoxyphenamine ratio changed such that extensive metabolizers could be classified as poor metabolizers due to quinidine pretreatment. No marked change occurred in the renal excretion of methoxyphenamine and its three metabolites either in the extensive metabolizers because of quinine pretreatment or in the poor metabolizer because of treatment with either quinidine or quinine. Thus in the extensive metabolizer phenotype it was demonstrated in one study that enzyme inhibition of quinidine was selective in terms of the metabolic pathways inhibited as well as stereoselective with respect to the inhibitor.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00626372
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  • 8
    Electronic Resource
    Electronic Resource
    Effect of quinidine on the interconversion kinetics between haloperidol and reduced haloperidol in humans: implications for the involvement of cytochrome P450IID6 (1993)
    Springer
    European journal of clinical pharmacology 44 (1993), S. 433-438 
    Details
    ISSN: 1432-1041
    Keywords: Haloperidol ; Cytochrome P450 isozymes ; reduced haloperidol ; interconversion ; quinidine ; drug interaction ; drug metabolism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary Haloperidol (HAL) is a potent butyrophenone antipsychotic agent which is reversibly metabolized to reduced haloperidol (RHAL). In order to determine if this reversible metabolic pathway is linked to the debrisoquine 4-hydroxylase isozyme of cytochrome P-450 (P450IID6), HAL (5 mg) or RHAL (5 mg) was orally administered to healthy male volunteers in a randomized crossover design both with and without a prior (1 h) oral dose of quinidine (250 mg bisulfate), a potent inhibitor of this isozyme. Thirteen volunteers, 11 extensive metabolizers, 2 poor metabolizers, completed all four phases of the study. Plasma samples harvested over seven days were analysed for HAL and RHAL. An expression for the apparent fractional availability of metabolite from the parent compound given (Fapp infm supp ) was derived and was used to determine whether HAL or RHAL is the preferred metabolite, and whether quinidine co-administration alters Fapp for either compound. The AUC (0-t) for both HAL and RHAL were significantly greater following the administration of either compound with quinidine compared with AUC (0-t) values obtained in the absence of quinidine. The maximum plasma concentration (Cmax) of the administered compound was also greater following the administration of quinidine. Quinidine had no effect on the half-lives of the administered compounds. The Fapp for HAL and RHAL were not significantly affected by the administration of quinidine, indicating that the interconversion of HAL and RHAL is not linked to P450IID6. The Fapp of RHAL after administration of HAL was significantly greater than the Fapp of HAL after RHAL administration, indicating that RHAL is the preferred metabolic form. This difference was not affected by quinidine. It is concluded that: 1) RHAL is the preferred form after administration of either compound and is not affected by quinidine, 2) the interconversion of HAL and RHAL is not affected by quinidine, indicating that this reversible metabolic process is not linked to P450IID6 and 3) there is a significant increase in the AUC (0-t) and Cmax values following quinidine co-administration with either HAL or RHAL. The precise mechanism of this interaction can not be established from this study, however, the observed increases in AUC (0-t) and Cmax may be explained with a simple tissue blinding displacement mechanism.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00315539
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  • 9
    Electronic Resource
    Electronic Resource
    Stereoselective pharmacokinetics of doxepin isomers (1992)
    Springer
    European journal of clinical pharmacology 42 (1992), S. 539-544 
    Details
    ISSN: 1432-1041
    Keywords: Doxepin ; N-desmethyldoxepin ; stereoselective pharmacokinetics ; stereoselective metabolism ; Cis isomer ; trans isomer
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary Commercial preparations of the tricyclic antidepressant doxepin contain 15% of the more active cisdoxepin and 85% of the trans-isomer. The single dose pharmacokinetics of doxepin and its major metabolite N-desmethyldoxepin were examined in 30 healthy young men. Results for total doxepin showed wide intersubject variation in all pharmacokinetic parameters except tmax and Cmax. Plasma levels of cis-doxepin were extremely low and it was only possible to estimate the stereoselective pharmacokinetics of the parent drug in 3 subjects. The data from those particular subjects resulted in an average ratio of cis- to trans-doxepin isomers in plasma of 15:85. In contrast, the mean plasma levels of cis-N-desmethyldoxepin in 28 subjects exceeded those of the trans-isomer at every time point after 10 h, such that the areas under the plasma concentration versus time curves (AUC) of cis-N-desmethyldoxepin were significantly higher than those of the corresponding trans-isomer. This phenomenon may play an important role in the therapeutic action of doxepin since it has been suggested that cis-N-desmethyldoxepin is pharmacologically active. In 2 subjects, however, the AUC 0-inf of trans-N-desmethyldoxepin were respectively 4 and 8 fold higher than those of the cis-isomer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00314865
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  • 10
    Electronic Resource
    Electronic Resource
    Simple and sensitive high-performance liquid chromatographic procedure with electrochemical detection for the determination of plasma concentrations of trimeprazine following single oral doses
    Amsterdam : Elsevier
    Journal of Chromatography B: Biomedical Sciences and Applications 233 (1982), S. 417-422 
    Details
    ISSN: 0378-4347
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/S0378-4347(00)81778-8
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