Search Results - (Author, Cooperation:G. Marsden)

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  1. 1
    Latest Papers from Table of Contents or Articles in Press
  2. 2
    Staff View
    Publication Date:
    2013-05-24
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Published by:
    Latest Papers from Table of Contents or Articles in Press
  3. 3
    Olga Kondrashova; Monique Topp; Ksenija Nesic; Elizabeth Lieschke; Gwo-Yaw Ho; Maria I. Harrell; Giada V. Zapparoli; Alison Hadley; Robert Holian; Emma Boehm; Valerie Heong; Elaine Sanij; Richard B. Pearson; John J. Krais; Neil Johnson; Orla McNally; Sumitra Ananda; Kathryn Alsop; Karla J. Hutt; Scott H. Kaufmann; Kevin K. Lin; Thomas C. Harding; Nadia Traficante; G. Chenevix-Trench; A. Green; P. Webb; D. Gertig; S. Fereday; S. Moore; J. Hung; K. Harrap; T. Sadkowsky; N. Pandeya; M. Malt; A. Mellon; R. Robertson; T. Vanden Bergh; M. Jones; P. Mackenzie; J. Maidens; K. Nattress; Y. E. Chiew; A. Stenlake; H. Sullivan; B. Alexander; P. Ashover; S. Brown; T. Corrish; L. Green; L. Jackman; K. Ferguson; K. Martin; A. Martyn; B. Ranieri; J. White; V. Jayde; P. Mamers; L. Bowes; L. Galletta; D. Giles; J. Hendley; T. Schmidt; H. Shirley; C. Ball; C. Young; S. Viduka; H. Tran; S. Bilic; L. Glavinas; J. Brooks; R. Stuart-Harris; F. Kirsten; J. Rutovitz; P. Clingan; A. Glasgow; A. Proietto; S. Braye; G. Otton; J. Shannon; T. Bonaventura; J. Stewart; S. Begbie; M. Friedlander; D. Bell; S. Baron-Hay; A. Ferrier; G. Gard; D. Nevell; N. Pavlakis; S. Valmadre; B. Young; C. Camaris; R. Crouch; L. Edwards; N. Hacker; D. Marsden; G. Robertson; P. Beale; J. Beith; J. Carter; C. Dalrymple; R. Houghton; P. Russell; M. Links; J. Grygiel; J. Hill; A. Brand; K. Byth; R. Jaworski; P. Harnett; R. Sharma; G. Wain; B. Ward; D. Papadimos; A. Crandon; M. Cummings; K. Horwood; A. Obermair; L. Perrin; D. Wyld; J. Nicklin; M. Davy; M. K. Oehler; C. Hall; T. Dodd; T. Healy; K. Pittman; D. Henderson; J. Miller; J. Pierdes; P. Blomfield; D. Challis; R. McIntosh; A. Parker; B. Brown; R. Rome; D. Allen; P. Grant; S. Hyde; R. Laurie; M. Robbie; D. Healy; T. Jobling; T. Manolitsas; J. McNealage; P. Rogers; B. Susil; E. Sumithran; I. Simpson; K. Phillips; D. Rischin; S. Fox; D. Johnson; S. Lade; M. Loughrey; N. O’Callaghan; W. Murray; P. Waring; V. Billson; J. Pyman; D. Neesham; M. Quinn; C. Underhill; R. Bell; L. F. Ng; R. Blum; V. Ganju; I. Hammond; Y. Leung; A. McCartney; M. Buck; I. Haviv; D. Purdie; D. Whiteman; N. Zeps; Anna de; Fazio; Iain A. McNeish; David D. Bowtell; Elizabeth M. Swisher; Alexander Dobrovic; Matthew J. Wakefield; Clare L. Scott
    Nature Publishing Group (NPG)
    Published 2018
    Staff View
    Publication Date:
    2018-09-29
    Publisher:
    Nature Publishing Group (NPG)
    Electronic ISSN:
    2041-1723
    Topics:
    Biology
    Chemistry and Pharmacology
    Natural Sciences in General
    Physics
    Published by:
    Latest Papers from Table of Contents or Articles in Press
  4. 4
    Sugrue, M. ; Jones, I.F. ; Evans, E. ; Fairhead, S. ; Marsden, G.

    PO Box 1354, 9600 Garsington Road , Oxford OX4 2XG , UK . : Blackwell Science Ltd
    Published 2004
    Staff View
    ISSN:
    1365-2478
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Geosciences
    Physics
    Notes:
    The theme of the 2003 EAGE/SEG imaging workshop concerned the contrast between different philosophies of ‘model building’: whether an explicit, user-determined model should be imposed throughout the processing, with user updates at each step; or alternatively, whether user intervention should be kept to a minimum so as to avoid preconceived bias, and instead to allow the data itself to guide some heuristic process to converge to an optimal solution.Here we consider a North Sea study where our initial approach was to build the subsurface model using interpreted horizons as a guide to the velocity update. This is common practice in the North Sea, where the geology ‘lends itself’ to a layer-based model representation. In other words, we encourage preconceived bias, as we consider it to be a meaningful geological constraint on the solution.However, in this instance we had a thick chalk sequence, wherein the vertical compaction gradient changed subtly, in a way not readily discernible from the seismic reflection data. As a consequence, imposing the explicit top and bottom chalk horizons, with an intervening vertical compaction gradient (of the form v(x, y, z) =v0(x, y) +k(x, y).z), led to a misrepresentation of the subsurface.To address this issue, a gridded model building approach was also tried. This relied on dense continuous automatic picking of residual moveout in common-reflection point gathers at each iteration of the model update, followed by gridded tomography, resulting in a smoothly varying velocity field which was able to reveal the underlying local changes within the chalk.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  5. 5
    Hansford, S. W. ; Marsden, G. E.

    Oxford, UK : Blackwell Publishing Ltd
    Published 1995
    Staff View
    ISSN:
    1749-7345
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes:
    This paper reports on the variability in spawner performance and viability of the eggs and larvae of Penueus monodon from a single geographical region (Cook Bay, Australia). Data is presented from seven separate experiments spawning eyestalk ablated P. monodon conducted between Sep tember 1992 and July 1994. These experiments used 200 spawners from which 290 spawns were assayed. Total egg and larval (Nauplius, and ha,) production values per prawn were calculated and were significantly different (P 〈 0.05) between experiments. Spawner weight and number of spawns per prawn also varied significantly between experiments and, although these factors afiected egg and larval productivity, they accounted for only a small percentage of the observed variability. The cause of this variation is unknown but it may be due to differences in the age of the spawners and to seasonal environmental effects. The variation in reproductive success of wildcaught spawners probably reflects differences in overall condition of the spawners and/or their nutritional status at different times. Understanding the causes of variation in productivity is important if hatcheries are to improve the reliability of supply of larvae for the prawn farming industry.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  6. 6
    Wagner, Marsden G.

    Oxford, UK : Blackwell Publishing Ltd
    Published 1988
    Staff View
    ISSN:
    1523-536X
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Medicine
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  7. 7
    Hoang, T ; Lee, S Y ; Keenan, C P ; Marsden, G E

    Oxford, UK : Blackwell Science Ltd
    Published 2002
    Staff View
    ISSN:
    1365-2109
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes:
    This 12-month preliminary study investigated the development of sexual characters, primary sexual maturity, ovarian maturity and spawning performance of pond-reared Penaeus merguiensis in relation to culture conditions in south-east Queensland, Australia. Post-larvae of P. merguiensis were produced and cultured in two 60-m3 tanks during the first 14 weeks. Before winter, they were harvested and stocked in three different overwintering facilities: a 200-m2 covered pond, two 60-m3 outdoor tanks and a 15-m3 indoor, recirculated tank at a stocking density of 10 individuals m−2. The development of sexual characters was found to be similar to that reported previously in wild P. merguiensis. Males matured at younger ages and smaller sizes than females. Overall, the average size at primary sexual maturity of pond-reared P. merguiensis was 23.1 mm carapace length for males (possessed spermatophores) and 29.3 mm for females (being impregnated). Water temperature and the availability of natural food strongly influenced prawn growth, maturity rate and their subsequent spawning performance. Growth, maturity rate and spawning performance of prawns in the covered pond were significantly higher than in the other overwintering facilities. Prawns started mating at 6–7 months, reached full ovarian maturation and spawned as early as about 8 (peaked at 9–11) months from hatching, producing high fecundity and viable larvae. There was a strong relationship (P 〈 0.001) between prawn size and fecundity. The results of this study suggest a potential for using pond-reared broodstock P. merguiensis for hatchery production and for domestication or selective breeding programmes.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  8. 8
    MARSDEN, G.

    Woodstock, Md., etc : Periodicals Archive Online (PAO)
    Published 1994
    Articles: DFG German National Licenses
  9. 9
    COBURN, J. G. ; MARSDEN, G. W.

    Oxford, UK : Blackwell Publishing Ltd
    Published 1960
    Staff View
    ISSN:
    1365-2133
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Medicine
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  10. 10
    Wagner, Marsden G. ; Stephenson, Patricia A.
    Springer
    Published 1992
    Staff View
    ISSN:
    1420-911X
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Medicine
    Description / Table of Contents:
    Résumé Cet article passe en revue la prévalence et l'étiologie de l'infécondité dans les pays développés, ainsi que la pertinence de cette information pour gérer les services de soins et de prévention concernant l'infertilité. Certaines études font penser que l'infertilité pourrait toucher environ 10–20%. Cette estimation, avec la conviction qu'une prévention est impossible, a été utilisée pour justifier les investissements croissants des pouvoirs publics dans le traitement médical de l'infertilité et de la procréation assistée. En fait, les enquêtes de population montrent que peu de couples dans l'âge de reproduction sont réellement inféconds: par exemple, une enquête récente aux Etats-Unis a montré que 8,5% des couples mariés (avec une femme âgée de 15 à 44 ans) étaient inféconds; 4% de l'echantillon n'avaient pas d'enfant et signalaient une maladie empêchant la fertilité; moins de 2% n'avaient pas d'enfant, avaient une fécondite basse et avaient plus de 35 ans. D'autres études indiquent qu'environ 1/3 des couples ont des difficultés à concevoir à un moment quelconque de leur vie reproductive, mais peu demeurent sans enfant. Une proportion importante des cas d'infécondité pourraient être prévenus grâce à l'obligation plus agressive de mesures standards de santé publique.
    Abstract:
    Zusammenfassung Im vorliegenden Artikel werden Prävalenz und Aetiologie der Infertilität und die Relevanz dieser Information für nationale Infertilitätsdienste und Präventionsprogramme diskutiert. Die Prävalenz der Infertilität in industrialisierten Ländern wird mit 10–20% angegeben. Diese Schätzung und das Argument, dass wenig getan werden kann, um der Infertilität vorzubeugen, wurde zur Rechtfertigung vermehrter Investitionen oder des Ausbaus von medizinisch unterstützten Konzeptionsmethoden benützt. Bevölkerungsuntersuchungen liefern jedoch Hinweise, dass wesentlich weniger Paare im reproduktiven Alter tatsächlich infertil sind. In den Vereinigten Staaten ergab eine neuere Untersuchung von verheirateten Paaren mit Frauen im Alter zwischen 15 und 44 Jahren, dass 8,5% infertil waren. 4% dieser Stichprobe waren kinderlos und gaben einen Grund für ihre verminderte Fruchtbarkeit an, während bei den über 35jährigen weniger als 2% kinderlos waren und eine verminderte Fruchtbarkeit angaben. Andere Studien zeigen, dass rund ein Drittel aller Paare irgendeinmal während ihres reproduktiven Lebens Schwierigkeiten zu konzipieren haben, aber schlussendlich nur wenige kinderlos bleiben. Ein nicht unbedeutender Teil der Infertilität könnte durch stärkere Anwendung von Standardmassnahmen in der Öffentlichen Gesundheit verhindert werden.
    Notes:
    Summary We discuss the prevalence and aetiology of infertility and the relevance of this information for national infertility services and prevention programmes. The prevalence of infertility in industrialized countries has been said to be as high as 10–20%. This estimate, and the argument that little can be done to prevent infertility, have been used as justification for increased government investment in, or expansion of, services for medically assisted conception. However, population prevalence surveys indicate that far fewer couples of reproductive age are actually infertile. For example, a recent survey in the United States reported that 8.5% of married couples with a wife age 15–44 were infertile. 4% of the sample were childless and reported having a condition which impaired fecundity, while less than 2% were childless, had impaired fecundity and were over 35 years of age. Other studies show that nearly a third of couples have difficulty conceiving at some point during their reproductive lives but few actually remain childless. A significant proportion of infertility could be prevented through more aggressive application of standard public health measures.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses