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  • 1995-1999  (3,481)
  • 1970-1974  (184)
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  • 1
    Monograph available for loan
    Monograph available for loan
    Régimen de heladas en la zona cultivada de Mendoza (1970)
    Buenos Aires : Fuerza Aérea Argentina, Comando de Regiónes Aéreas, Servicio Meteorológico Nacional
    Details Availability
    Call number: MOP 41374
    Type of Medium: Monograph available for loan
    Pages: 55 S. : Ill.
    Series Statement: Fuerza Aerea Argentina : Serie D 7
    Location: MOP - must be ordered
    Branch Library: GFZ Library
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  • 2
    Series available for loan
    Series available for loan
    Proceedings of the second Workshop: Application of artificial intelligence techniques in seismology and engineering seismology : October 4th to 6th, 1995, Walferdange (Grand-Duchy of Luxemburg) (1996)
    Luxembourg : Centre Europeen de Geodynamique et de Seismologie
    Associated volumes
    Details Availability
    Call number: S 02.0465(12)
    In: Cahiers du Centre Européen de Géodynamique et de Séismologie
    Type of Medium: Series available for loan
    Pages: XVIII, 304 S.
    ISBN: 2879770440
    Series Statement: Cahiers du Centre Europeen de Geodynamique et de Seismologie 12
    Location: Lower compact magazine
    Branch Library: GFZ Library
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  • 3
    Monograph available for loan
    Monograph available for loan
    Structural controls on sedimentary basin formation : papers presented at the 6th annual workshop of the ILP Task Force "Origin of Sedimentary Basins" in Sitges, Spain, September 1995 (1997)
    Amsterdam : Elsevier
    Associated volumes
    Details Availability
    Call number: ILP/M 06.0143
    In: Publication of the International Lithosphere Programme
    In: Tectonophysics
    Type of Medium: Monograph available for loan
    Pages: XVIII, 442 S. : Ill., graph. Darst.
    Series Statement: Publication of the International Lithosphere Programme 337
    Location: Reading room
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  • 4
    Dissertations
    Dissertations
    Zur Petrogenese des Alkalikomplexes der Sierra de Tamaulipas, NE-Mexiko : Dissertation zur Erlangung des Doktorgrades der Geowissenschaftlichen Fakultät der Albert-Ludwigs-Universität Freiburg im Breisgau (1996)
    Freiburg im Breisgau : Univ.
    Details Availability
    Call number: AWI G1-18-91646
    Type of Medium: Dissertations
    Pages: 316 Seiten , Illustrationen, graphische Darstellungen , 21 cm
    Language: German
    Note: Freiburg (Breisgau), Univ., Diss., 1996 , INHALTSVERZEICHNIS: ZUSAMMENFASSUNG. - 1. EINFÜHRUNG. - 1.1. Geographische Aspekte des Arbeitsgebietes. - 1.2. Regionalgeologischer Überblick und bisherige Arbeiten. - 1.3. Zielsetzung. - 2. GEOLOGIE UND GELÄNDEBEOBACHTUNGEN. - 2.1. Intrusivkomplex der Sierra de Tamaulipas. - 2.2. EI Picacho Komplex. - 2.3. Periphere Vulkanite. - 2.3.1. Westflanke. - 2.3.2. Südflanke. - 2.3.3. Ostflanke. - 3. INTRUSIVKOMPLEX DER SIERRA DE TAMUALIPAS. - 3.1. Petrograhie. - 3.1.1. Diorite. - 3.1.2. Foid-Monzodiorite. - 3.1.3. Monzodiorite. - 3.1.4. Monzenite. - 3.1.5. Foid-Syenite. - 3.1.6. Foid-führende Alkalifeldspat-Syenite. - 3.1.7. Syenitische Gesteine. - 3.1.8. Granitische Gesteine. - 3.2. Petrographische Trends. - 3.3. Mineralchemismus. - 3.3.1. Feldspäte. - 3.3.2. Klinopyroxene. - 3.3.3. Amphibole. - 3.3.4. Biotite. - 3.3.5. Aenigmatite. - 3.3.6. Fe-Ti-Oxide. - 3.4. Geochemie. - 3.4.1 Hauptelemente. - 3.4.2. Spurenelemente. - 3.4.3. Spurenelement- und Seltene Erden-Verteilungsmuster. - 3.4.4. Geotektonische Diskriminierung. - 3.5 Genetische Überlegungen. - 4. EL PICACHO KOMPLEX. - 4.1. Petrographie. - 4.1.1. Gabbroische Gesteine. - 4.1.2. Nephelin-reiche Gesteine. - 4.1.3. Nephelin-Syenite. - 4.1.4. Granite. - 4.1.5. Alkalilamprophyre. - 4.1.6. Basische Gänge. - 4.1.7. Phonolithische Gänge. - 4.1.8. Karbonatite. - 4.1.9. Fenite. - 4.2. Petrographische Trends. - 4.3. Mineralchemie. - 4.3.1. Feldspäte. - 4.3.2. Olivine. - 4.3.3. Pyroxene. - 4.3.4. Amphibole. - 4.3.5. Biotite. - 4.3.6. Skapolithe. - 4.3.7. Granate. - 4.3.8. Fe-Ti-Oxide. - 4.3.9. Phasen in den Karbonatiten. - 4.4. Geochemie. - 4.4.1. Haupt- und Spurenelemente. - 4.4.1.1. Gabbroische Gesteine. - 4.4.1.2. Nephelinreiche Gesteine. - 4.4.1.3. Nephelin-Syenite. - 4.4.1.4. Granite. - 4.4.1.5. Alkalilamprophyre (AL). - 4.4.1.6. Basische Gänge (BG). - 4.4.1.7. Phonolithische Gänge (PhG). - 4.4.1.8. Karbonatite. - 4.4.1.9. Fenite. - 4.4.10. Modeliierung einer möglichen Fraktionierung. - 4.4.2. Spurenelement- und Seltene Erde-Verteilungsmuster. - 4.4.3. Stabile Isotope. - 4.4.4. Geotektonische Diskriminierung. - 4.5. Genetische Überlegungen. - 5. PERIPHERE VULKANITE. - 5.1 Nomenklatur. - 5.2 Petrographie. - 5.2.1. Westflanke (WF). - 5.2.1.1. Basalte (Alkalibasalte). - 5.2.1.2. Basanite und Tephrite. - 5.2.1.3. Trachybasalte (Hawaüte). - 5.2.2. Südflanke (SF). - 5.2.2.1. Basanite. - 5.2.2.2. Olivin-Phonolithe des Bemal de Horcasitas. - 5.2.2.3. Phonolithe. - 5.2.3. Ostflanke (OF). - 5.2.3.1. Basalte (Alkalibasalte und Subalkalibasalte). - 5.2.3.2. Trachybasalte (Hawaiite und potassische Trachybasalte). - 5.2.3.3. Basaltische Trachyandesite (Mugearite und K-Mugearite). - 5.2.3.4. Latite. - 5.2.3.5. Trachyte. - 5.3. Mineralchemismus. - 5.3.1. Feldspäte. - 5.3.2. Olivine. - 5.3.3. Klinopyroxene. - 5.3.4. Titan-Biotite. - 5.3.5. Oxide. - 5.3.6. Glas. - 5.4. Geochemie. - 5.4.1. Hauptelemente. - 5.4.2. Spurenelemente. - 5.4.3. Quantitative Modeliierung der Fraktionierung. - 5.4.4. Spurenelement- und Seltene Erden-Verteilungsmuster. - 5.4.5. Geotektonische Diskriminierung. - 5.5. Mantelxenolithe. - 5.6. Genetische Überlegungen. - 6. BEZIEHUNG ZWISCHEN DEN TEILKOMPLEXEN. - 7. GEOTEKTONISCHES MODELL ZUR ENTSTEHUNG DER SIERRA OE TAMAULIPAS. - 8. LITERATURVERZEICHNIS. - 9. ANHANGSVERZEICHNIS UND ANHANG.
    Location: AWI Reading room
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  • 5
    Unknown
    Understanding Granites : Integrating New and Classical Techniques ; [inspired by an international workshop entitled "Modern and classical Techniques in granite studies" that was held in the University of Huelva (Spain) in November 1997] (1999)
    London : The Geological Society
    Details
    Keywords: Granit ; Gesteinskunde ; Geologie ; Geochemie ; Kongress ; Huelva ; Magmatisches Gestein ; Magmatismus ; Magma ; Magmakammer ; Schmelze ; Intrusion ; Erdkruste ; Erdmantel ; Viskosität ; Angewandte Geophysik ; Textur ; Modellierung
    Description / Table of Contents: Understanding granites: integrating new and classical techniques / Antonio Castro, Carlos Fernández and Jean Louis Vigneresse / Geological Society, London, Special Publications, 168, 1-5, 1 January 1999, https://doi.org/10.1144/GSL.SP.1999.168.01.01 --- Some time-space relationships for crustal melting and granitic intrusion at various depths / Alan Bruce Thompson / Geological Society, London, Special Publications, 168, 7-25, 1 January 1999, https://doi.org/10.1144/GSL.SP.1999.168.01.02 --- Granitic melt viscosities / Donald B. Dingwell / Geological Society, London, Special Publications, 168, 27-38, 1 January 1999, https://doi.org/10.1144/GSL.SP.1999.168.01.03 --- Geophysical imaging of the shape of granitic intrusions at depth: a review / L. Améglio and J. L. Vigneresse / Geological Society, London, Special Publications, 168, 39-54, 1 January 1999, https://doi.org/10.1144/GSL.SP.1999.168.01.04 --- What do experiments tell us about the relative contributions of crust and mantle to the origin of granitic magmas? / Alberto E. Patiño Douce / Geological Society, London, Special Publications, 168, 55-75, 1 January 1999, https://doi.org/10.1144/GSL.SP.1999.168.01.05 --- Geometry of granite emplacement in the upper crust: contributions of analogue modelling / Teresa Román-Berdiel / Geological Society, London, Special Publications, 168, 77-94, 1 January 1999, https://doi.org/10.1144/GSL.SP.1999.168.01.06 --- A multidisciplinary approach combining geochemical, gravity and structural data: implications for pluton emplacement and zonation / L. Hecht and J. L. Vigneresse / Geological Society, London, Special Publications, 168, 95-110, 1 January 1999, https://doi.org/10.1144/GSL.SP.1999.168.01.07 --- The Coastal Batholith and other aspects of Andean magmatism in Peru / E. J. Cobbing / Geological Society, London, Special Publications, 168, 111-122, 1 January 1999, https://doi.org/10.1144/GSL.SP.1999.168.01.08 --- Contrasts in morphogenesis and tectonic setting during contemporaneous emplacement of S- and I-type granitoids in the Eastern Lachlan Fold Belt, southeastern Australia / R. Trzebski, P. Lennox and D. Palmer / Geological Society, London, Special Publications, 168, 123-140, 1 January 1999, https://doi.org/10.1144/GSL.SP.1999.168.01.09 --- Structure and geophysics of the Gåsborn granite, central Sweden: an example of fracture-fed asymmetric pluton emplacement / Alexander R. Cruden, Håkan Sjöström and Sven Aaro / Geological Society, London, Special Publications, 168, 141-160, 1 January 1999, https://doi.org/10.1144/GSL.SP.1999.168.01.10 --- Emplacement of the Joshua Flat-Beer Creek Pluton (White Inyo Mountains, California): a story of multiple material transfer processes / Carlo Dietl / Geological Society, London, Special Publications, 168, 161-176, 1 January 1999, https://doi.org/10.1144/GSL.SP.1999.168.01.11 --- Petrology, magnetic fabric and emplacement in a strike-slip regime of a zoned peraluminous granite: the Campanario-La Haba pluton, Spain / A. Alonso Olazabal, M. Carracedo and A. Aranguren / Geological Society, London, Special Publications, 168, 177-190, 1 January 1999, https://doi.org/10.1144/GSL.SP.1999.168.01.12 --- Brittle behaviour of granitic magma: the example of Puente del Congosto, Iberian Massif, Spain / Carlos Fernández and Antonio Castro / Geological Society, London, Special Publications, 168, 191-206, 1 January 1999, https://doi.org/10.1144/GSL.SP.1999.168.01.13 --- Origin of megacrysts in granitoids by textural coarsening: a crystal size distribution (CSD) study of microcline in the Cathedral Peak Granodiorite, Sierra Nevada, California / Michael D. Higgins / Geological Society, London, Special Publications, 168, 207-219, 1 January 1999, https://doi.org/10.1144/GSL.SP.1999.168.01.14 --- Movement of melt during synchronous regional deformation and granulite-facies anatexis, an example from the Wuluma Hills, central Australia / E. W. Sawyer, C. Dombrowski and W. J. Collins / Geological Society, London, Special Publications, 168, 221-237, 1 January 1999, https://doi.org/10.1144/GSL.SP.1999.168.01.15 --- Partial melting and P-T-t evolution of LP/HT metamorphic terranes: an example from the Svecofennian K-feldspar-poor leucosome migmatite belt, Southern Finland / H. Mouri and K. Korsman / Geological Society, London, Special Publications, 168, 239-253, 1 January 1999, https://doi.org/10.1144/GSL.SP.1999.168.01.16 --- Evidence of magmatic hybridization related with feeding zones: the synkinematic Guitiriz granitoid, NW Iberian Massif / M. Menéndez and L. A. Ortega / Geological Society, London, Special Publications, 168, 255-272, 1 January 1999, https://doi.org/10.1144/GSL.SP.1999.168.01.17
    Pages: Online-Ressource (272 Seiten) , Illustrationen, Diagramme, Karten
    ISBN: 1862390584
    URL: http://sp.lyellcollection.org/content/168/1
    Language: English
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  • 6
    Unknown
    Cenozoic Foreland Basins of Western Europe (1998)
    London : The Geological Society
    Details
    Keywords: Känozoikum ; Vortiefe ; Westeuropa ; Basins (Geology) ; Europe, Western ; Cenozoic ; Europe ; Geology ; Geology, Stratigraphic
    Description / Table of Contents: B. Durand: Foreword / Geological Society, London, Special Publications, 134:vii-viii, doi:10.1144/GSL.SP.1998.134.01.01 --- Alain Mascle and Cai Puigdefàbregas: Tectonics and sedimentation in foreland basins: results from the Integrated Basin Studies project / Geological Society, London, Special Publications, 134:1-28, doi:10.1144/GSL.SP.1998.134.01.02 --- Guadalquivir and Ebro Foreland Basins (Spain) --- M. Fernàndez, X. Berástegui, C. Puig, D. García-Castellanos, M. J. Jurado, M. Torné, and C. Banks: Geophysical and geological constraints on the evolution of the Guadalquivir foreland basin, Spain / Geological Society, London, Special Publications, 134:29-48, doi:10.1144/GSL.SP.1998.134.01.03 --- X. Berástegui, C.J. Banks, C. Puig, C. Taberner, D. Waltham, and M. Fernàndez: Lateral diapiric emplacement of Triassic evaporites at the southern margin of the Guadalquivir Basin, Spain / Geological Society, London, Special Publications, 134:49-68, doi:10.1144/GSL.SP.1998.134.01.04 --- Edward A. Williams, Mary Ford, Jaume Vergés, and Andrea Artoni: Alluvial gravel sedimentation in a contractional growth fold setting, Sant Llorenç de Morunys, southeastern Pyrenees / Geological Society, London, Special Publications, 134:69-106, doi:10.1144/GSL.SP.1998.134.01.05 --- J. Vergés, M. Marzo, T. Santaeulària, J. Serra-Kiel, D. W. Burbank, J. A. Muñoz, and J. Giménez-Montsant: Quantified vertical motions and tectonic evolution of the SE Pyrenean foreland basin / Geological Society, London, Special Publications, 134:107-134, doi:10.1144/GSL.SP.1998.134.01.06 --- Wouter Nijman: Cyclicity and basin axis shift in a piggyback basin: towards modelling of the Eocene Tremp-Ager Basin, South Pyrenees, Spain / Geological Society, London, Special Publications, 134:135-162, doi:10.1144/GSL.SP.1998.134.01.07 --- Anna Travé, Pierre Labaume, Francesc Calvet, Albert Soler, Jordi Tritlla, Martine Buatier, Jean-Luc Potdevin, Michel Séguret, Suzanne Raynaud, and Louis Briqueu: Fluid migration during Eocene thrust emplacement in the south Pyrenean foreland basin (Spain): an integrated structural, mineralogical and geochemical approach / Geological Society, London, Special Publications, 134:163-188, doi:10.1144/GSL.SP.1998.134.01.08 --- French Western Alps --- W. Henry Lickorish and Mary Ford: Sequential restoration of the external Alpine Digne thrust system, SE France, constrained by kinematic data and synorogenic sediments / Geological Society, London, Special Publications, 134:189-211, doi:10.1144/GSL.SP.1998.134.01.09 --- Andrea Artoni and Lawrence D. Meckel III: History and deformation rates of a thrust sheet top basin: the Barrême basin, western Alps, SE France / Geological Society, London, Special Publications, 134:213-237, doi:10.1144/GSL.SP.1998.134.01.10 --- Yann Philippe, Eric Deville, and Alain Mascle: Thin-skinned inversion tectonics at oblique basin margins: example of the western Vercors and Chartreuse Subalpine massifs (SE France) / Geological Society, London, Special Publications, 134:239-262, doi:10.1144/GSL.SP.1998.134.01.11 --- Christian Beck, Eric Deville, Eric Blanc, Yann Philippe, and Marc Tardy: Horizontal shortening control of Middle Miocene marine siliciclastic accumulation (Upper Marine Molasse) in the southern termination of the Savoy Molasse Basin (northwestern Alps/southern Jura) / Geological Society, London, Special Publications, 134:263-278, doi:10.1144/GSL.SP.1998.134.01.12 --- Swiss, German and Austrian Molasse Basin --- Martin Burkhard and Anna Sommaruga: Evolution of the western Swiss Molasse basin: structural relations with the Alps and the Jura belt / Geological Society, London, Special Publications, 134:279-298, doi:10.1144/GSL.SP.1998.134.01.13 --- J. Zweigel, T. Aigner, and H. Luterbacher: Eustatic versus tectonic controls on Alpine foreland basin fill: sequence stratigraphy and subsidence analysis in the SE German Molasse / Geological Society, London, Special Publications, 134:299-323, doi:10.1144/GSL.SP.1998.134.01.14 --- J. Zweigel: Reservoir analogue modelling of sandy tidal sediments, Upper Marine Molasse, SW Germany, Alpine foreland basin / Geological Society, London, Special Publications, 134:325-337, doi:10.1144/GSL.SP.1998.134.01.15 --- Ludwig R. Wagner: Tectono-stratigraphy and hydrocarbons in the Molasse Foredeep of Salzburg, Upper and Lower Austria / Geological Society, London, Special Publications, 134:339-369, doi:10.1144/GSL.SP.1998.134.01.16 --- Numerical Modelling --- Stefan Bornholdt and Hildegard Westphal: Automation of stratigraphic simulations: quasi-backward modelling using genetic algorithms / Geological Society, London, Special Publications, 134:371-379, doi:10.1144/GSL.SP.1998.134.01.17 --- Taco den Bezemer, Henk Kooi, Yuri Podladchikov, and Sierd Cloetingh: Numerical modelling of growth strata and grain-size distributions associated with fault-bend folding / Geological Society, London, Special Publications, 134:381-401, doi:10.1144/GSL.SP.1998.134.01.18 --- B. Andeweg and S. Cloetingh: Flexure and ‘unflexure’ of the North Alpine German-Austrian Molasse Basin: constraints from forward tectonic modelling / Geological Society, London, Special Publications, 134:403-422, doi:10.1144/GSL.SP.1998.134.01.19
    Pages: Online-Ressource (VIII, 427 Seiten) , Illustrationen, Diagramme, Karten
    ISBN: 1862390150
    URL: http://sp.lyellcollection.org/content/134/1
    Language: English
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  • 7
    Electronic Resource
    Electronic Resource
    Electromagnetic waves scattering by cylindrical dielectric structures: Application to microwave devices design (1996)
    Springer
    International journal of infrared and millimeter waves 17 (1996), S. 235-254 
    Details
    ISSN: 1572-9559
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A method which allows us to analyze the electromagnetic scattering characteristics of multiple discontinuities in shielded dielectric waveguides is presented. There are not restrictions both geometry of the cross section and electrical parameters of the dielectrics which are assumed to be linear, inhomogeneous, isotropic and free from losses. Each discontinuity is analyzed combining a modal matching technique with a generalized telegraphist's equations formulation; in this way, we obtain its scattering matrix. By using the concept of the generalized scattering matrix of two discontinuities, the equivalent generalized scattering matrix (EGSM) of the cascaded set is calculated. Theoretical and experimental results were obtained for different dielectric structures such as dielectric posts, isolated and coupled, as well as dielectric waveguides with circular cross section connected by means of abrupt and gradual transitions. The experimental values for the scattering properties show a good agrement with the theoretical ones. This study has shown the possibility of using cylindrical dielectric structures to design microwave devices such as: resonators, power-dividers and filters.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02088196
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  • 8
    Electronic Resource
    Electronic Resource
    Determination of the antibacterial drug sulfamethoxazole in pharmaceutical preparations containing trimethoprim by spectrofluorimetry after derivatization with fluorescamine (1999)
    Springer
    Fresenius' journal of analytical chemistry 365 (1999), S. 444-447 
    Details
    ISSN: 1432-1130
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract An analytical method was developed for the determination of sulfamethoxazole (SMZ) in the presence of trimethoprim (TMP) by normal fluorescence. When both analytes are present a selective derivatization with fluorescamine of SMZ gives an intense fluorescent derivative with no interference from the other compound. The reaction was optimized to obtain the best analytical performance. The detection limit and the lower limit of quantitation of SMZ in the reaction medium was 5.2 ng/mL. The intra-day precision (relative standard deviation) was 1.51% for a 100 ng/mL SMZ standard solution and the inter-day precision over 7 days for a 100 ng/mL solution in the presence of 20 ng/mL TMP solution was 2.5%. The method has been applied to three pharmaceutical preparations containing both compounds, without any separation steps required.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002160051637
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  • 9
    Electronic Resource
    Electronic Resource
    Delays in prophase induced by adenosine 2-deoxyriboside and their relation with DNA synthesis (1970)
    Springer
    Chromosoma 29 (1970), S. 1-11 
    Details
    ISSN: 1432-0886
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The rate of DNA synthesis in the course of the division cycle in root meristem ofAllium cepa growing under constant temperature and aeration conditions has been studied by means of treatment with AdR, as a specific inhibitor of the synthesis, as well as by the incorporation of tritiated thymidine. The one-hour treatment with AdR or tritiated thymidine was given at various hours in the course of the interphase of a synchronous population of binucleate cells induced by caffeine. In the case of AdR, sensitivity to the inhibition of DNA synthesis was studied by recording the delays produced by the treatment in the appearance of biprophases and bitelophases. The selection by the use of caffeine, of spontaneously synchronous populations of cells going through the telophase and becoming binucleate and the detection of the first biprophases in the subsequent mitosis provide a highly synchronized system with which to study the incorporation of tritiated thymidine during the interphase. The curves representing sensitivity to the inhibition of DNA synthesis by AdR and the rate of tritiated thymidine incorporation coincide, so that we can regard the delays, under our conditions, as proportional to the rate of DNA synthesis at the moment of the AdR treatment. This rate, in the S period, was found to be variable by both methods, being higher in the first and the last thirds of the S period (S1 and S3) and lower in the middle third (S2).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01183657
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  • 10
    Electronic Resource
    Electronic Resource
    Photolimitation and photoinhibition as factors determining optimal dilution rate to produce eicosapentaenoic acid from cultures of the microalga Isochrysis galbana (1998)
    Springer
    Applied microbiology and biotechnology 50 (1998), S. 199-205 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract Eicosapentaenoic acid (EPA) productivity from continuous cultures of the marine microalga Isochrysis galbana was studied, taking into account the irradiance on the reactor surface, that is, the photolimitation/photoinhibition regime to which the cells are exposed. Experiments were conducted under a wide variety of operating conditions. The dilution rate ranged from 0.005 h−1 to 0.040 h−1 at five external irradiances (820, 1620, 2050, 2450 and 3270 μmol photons m−2 s−1) covering photolimited to photoinhibited growth. Under these conditions, the specific growth rate (μ) was found to be the main factor influencing EPA content (ranging from 2.35% to 5.23% dryweight) and productivity (up to 0.88 mg l−1 h−1). The fatty acid content was not significantly affected by the external irradiance, but was influenced by the state of growth of the microalga, depending on whether the light regime was photolimiting or photoinhibiting. It might be suggested that light should no longer be considered an isolated factor affecting EPA synthesis, but an indirect influence through the photolimitation/photoinhibition regime and growth rate. At a given dilution rate, EPA content and biomass concentration are lower under photoinhibiting external irradiances than those corresponding to photolimiting conditions, and consequently EPA productivity decays. Since the effect of photoinhibition is less marked at high biomass concentration, a strategy to optimize EPA productivity from microalgal cultures could consist of reducing the dilution rate when the external irradiance increases above the phoinhibition threshold.
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    URL: http://dx.doi.org/10.1007/s002530051277
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