Search Results - (Author, Cooperation:I. Sanders)
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1Latest Papers from Table of Contents or Articles in PressN. D. Young ; F. Debelle ; G. E. Oldroyd ; R. Geurts ; S. B. Cannon ; M. K. Udvardi ; V. A. Benedito ; K. F. Mayer ; J. Gouzy ; H. Schoof ; Y. Van de Peer ; S. Proost ; D. R. Cook ; B. C. Meyers ; M. Spannagl ; F. Cheung ; S. De Mita ; V. Krishnakumar ; H. Gundlach ; S. Zhou ; J. Mudge ; A. K. Bharti ; J. D. Murray ; M. A. Naoumkina ; B. Rosen ; K. A. Silverstein ; H. Tang ; S. Rombauts ; P. X. Zhao ; P. Zhou ; V. Barbe ; P. Bardou ; M. Bechner ; A. Bellec ; A. Berger ; H. Berges ; S. Bidwell ; T. Bisseling ; N. Choisne ; A. Couloux ; R. Denny ; S. Deshpande ; X. Dai ; J. J. Doyle ; A. M. Dudez ; A. D. Farmer ; S. Fouteau ; C. Franken ; C. Gibelin ; J. Gish ; S. Goldstein ; A. J. Gonzalez ; P. J. Green ; A. Hallab ; M. Hartog ; A. Hua ; S. J. Humphray ; D. H. Jeong ; Y. Jing ; A. Jocker ; S. M. Kenton ; D. J. Kim ; K. Klee ; H. Lai ; C. Lang ; S. Lin ; S. L. Macmil ; G. Magdelenat ; L. Matthews ; J. McCorrison ; E. L. Monaghan ; J. H. Mun ; F. Z. Najar ; C. Nicholson ; C. Noirot ; M. O'Bleness ; C. R. Paule ; J. Poulain ; F. Prion ; B. Qin ; C. Qu ; E. F. Retzel ; C. Riddle ; E. Sallet ; S. Samain ; N. Samson ; I. Sanders ; O. Saurat ; C. Scarpelli ; T. Schiex ; B. Segurens ; A. J. Severin ; D. J. Sherrier ; R. Shi ; S. Sims ; S. R. Singer ; S. Sinharoy ; L. Sterck ; A. Viollet ; B. B. Wang ; K. Wang ; M. Wang ; X. Wang ; J. Warfsmann ; J. Weissenbach ; D. D. White ; J. D. White ; G. B. Wiley ; P. Wincker ; Y. Xing ; L. Yang ; Z. Yao ; F. Ying ; J. Zhai ; L. Zhou ; A. Zuber ; J. Denarie ; R. A. Dixon ; G. D. May ; D. C. Schwartz ; J. Rogers ; F. Quetier ; C. D. Town ; B. A. Roe
Nature Publishing Group (NPG)
Published 2011Staff ViewPublication Date: 2011-11-18Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsKeywords: *Biological Evolution ; *Genome, Plant ; Medicago truncatula/*genetics/*microbiology ; Molecular Sequence Data ; Nitrogen Fixation/genetics ; Rhizobium/*physiology ; Soybeans/genetics ; *Symbiosis ; Synteny ; Vitis/geneticsPublished by: -
2Latest Papers from Table of Contents or Articles in PressH. J. Pi ; B. Hangya ; D. Kvitsiani ; J. I. Sanders ; Z. J. Huang ; A. Kepecs
Nature Publishing Group (NPG)
Published 2013Staff ViewPublication Date: 2013-10-08Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsKeywords: Acoustic Stimulation ; Animals ; Auditory Cortex/physiology ; Cerebral Cortex/*cytology/*physiology ; Discrimination (Psychology)/physiology ; Female ; Interneurons/*physiology ; Male ; Mice ; Mice, Inbred C57BL ; Neural Inhibition/*physiology ; Optogenetics ; Parvalbumins/metabolism ; Prefrontal Cortex/physiology ; Punishment ; Reward ; Single-Cell Analysis ; Somatostatin/metabolism ; Vasoactive Intestinal Peptide/metabolism ; Wakefulness/physiologyPublished by: -
3Articles: DFG German National LicensesMayo, P. I. ; O'Grady, K. ; Kelly, P. E. ; Cambridge, J. ; Sanders, I. L. ; Yogi, T. ; Chantrell, R. W.
[S.l.] : American Institute of Physics (AIP)
Published 1991Staff ViewISSN: 1089-7550Source: AIP Digital ArchiveTopics: PhysicsNotes: The nature of media recording noise in metallic, quasiparticulate thin films is principally related to the grain size, crystallographic orientation, and intergranular exchange and magnetostatic coupling in the films. In this study the results of a magnetic evaluation of magnetostatic interactions in CoNiCr thin films of varying Cr underlayer thickness are reported. The evaluation is undertaken through the measurement and comparison of remanence curves. The results presented here indicate enhanced cooperative switching as Cr underlayer thickness is reduced from 2000 to 100 A(ring), with a strong correlation between signal-to-noise measurements. In addition, the transition from principally exchange-coupled to quasiparticulate thin films, as Cr underlayer thickness increases, has been established.〈lz〉 〈lz〉 〈lz〉 〈lz〉 〈lz〉 〈lz〉Type of Medium: Electronic ResourceURL: -
4Articles: DFG German National LicensesSanders, I. L. ; Wilhoit, D. R. ; Lambert, S. E. ; Gorman, G. L. ; Yogi, T. ; Speriosu, V. S.
[S.l.] : American Institute of Physics (AIP)
Published 1990Staff ViewISSN: 1089-7550Source: AIP Digital ArchiveTopics: PhysicsNotes: Periodic, finely multilayered thin-film magnetic structures (≤200 A(ring)) with high in-plane coercivity suitable for longitudinal recording investigations have been fabricated. CoPt20/Pd and CoPt12Cr17/Pd periodic multilayers can exhibit a perpendicular orientation, originating from surface anisotropy effects, with a magnitude depending on the thickness of the component layers. The perpendicular orientation influences the transition noise, but for the particular systems studied, the results suggest that for a given value of coercivity squareness, (approximately-less-than)0.8, the greatest improvements in media noise performance can be achieved through reduced exchange in films with a well-defined, in-plane orientation.Type of Medium: Electronic ResourceURL: -
5Articles: DFG German National LicensesLambert, S. E. ; Sanders, I. L. ; Patlach, A. M. ; Krounbi, M. T. ; Hetzler, S. R.
[S.l.] : American Institute of Physics (AIP)
Published 1991Staff ViewISSN: 1089-7550Source: AIP Digital ArchiveTopics: PhysicsNotes: The surface of a thin-film disk can be patterned using standard lithographic techniques to form discrete tracks as narrow as 0.5 μm. These studies have been extended to patterns formed when an etched track is broken into discrete segments by etching away some portions of a discrete track. Abrupt changes in the magnetization can be obtained by dc erasing the medium, giving readback signals with ∼50% of the amplitude of conventional transitions when the gap of the readback head is aligned with the edge of the media pattern. The implications of these results for servo and read-only applications are discussed.Type of Medium: Electronic ResourceURL: -
6Articles: DFG German National LicensesStaff View
ISSN: 1525-1314Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: GeosciencesNotes: Abstract High-pressure granulite-facies gneisses in the NE Ox inlier in NW Ireland have undergone extensive Caledonian retrogression. In the local area of Slishwood, however, reworking was negligible and the gneisses (psammites, semipelites, pelites, metabasites and ultramafites) preserve evidence of P–T changes at high grade which mainly post-date pre-Caledonian polyphase deformation. Temperatures reached 850–900°C (based on garnet-clinopyroxene geothermometry and the presence of mesoperthite) during and after decompression from earlier eclogite-facies conditions (inferred from textural evidence of plagioclase release in sieve-textured augite). Subsequent cooling at high pressure is inferred from the unequivocal replacement of sillimanite by kyanite.A Sm–Nd mineral isochron (gt–cpx–plag–WR) of 605 ± 37 Ma is taken to date a point on the cooling path, and confirms the hitherto suspected pre-Caledonian age of the high-grade metamorphism. Geochemical and Sm–Nd isotopic data indicate that the protoliths were probably late Proterozoic arkosic sediments and tholeiites. Following metamorphism they apparently came to reside near the base of the crust where they slowly cooled. The eventual exhumation of these gneisses is attributed to Caledonian crustal imbrication, followed by rapid isostatic recovery.Type of Medium: Electronic ResourceURL: -
7Articles: DFG German National LicensesSanders, I. L. ; Howard, J. K. ; Lambert, S. E. ; Yogi, T.
[S.l.] : American Institute of Physics (AIP)
Published 1989Staff ViewISSN: 1089-7550Source: AIP Digital ArchiveTopics: PhysicsNotes: Signal and media noise measurements have been made for a wide variety of Co-alloy longitudinal magnetic recording media. A strong correlation between media noise and the coercivity squareness, S*, is observed at high transition density. The optimum ratio of isolated pulse amplitude to media noise is found for S*(approximately-equal-to)0.75. This behavior arises from reduced ferromagnetic exchange coupling between neighboring grains of the film which influence both the coercivity squareness and also the uniformity of the domain boundary at the recorded transitions. The low-noise characteristics of sputtered γ-Fe2O3 also appear to correlate with low values of coercivity squareness. This work confirms that for systems in which media noise is a limiting factor, optimum performance may require considerably lower values of coercivity squareness than commonly used, determined by the relative contribution of media noise to the overall system noise.Type of Medium: Electronic ResourceURL: -
8Articles: DFG German National LicensesSchönenberger, C. ; Alvarado, S. F. ; Lambert, S. E. ; Sanders, I. L.
[S.l.] : American Institute of Physics (AIP)
Published 1990Staff ViewISSN: 1089-7550Source: AIP Digital ArchiveTopics: PhysicsNotes: Several techniques are presented which allow magnetic force microscopy to be performed while simultaneously mapping the surface topographic features of a magnetic sample. The separation of magnetic and topographic features measured simultaneously with a scanning force microscope is made possible by an instrument based on a differential interferometer that can detect cantilever deflections of 0.005 nm at a frequency as low as 1 Hz. Two different applications are presented.Type of Medium: Electronic ResourceURL: -
9Articles: DFG German National LicensesMamin, H. J. ; Rugar, D. ; Lambert, S. E. ; Franco, L. P. ; Sanders, I. L. ; Yogi, T. ; Beaulieu, T.
[S.l.] : American Institute of Physics (AIP)
Published 1990Staff ViewISSN: 1089-7550Source: AIP Digital ArchiveTopics: PhysicsNotes: Magnetic force microscopy (MFM) is an imaging technique which is particularly well suited to studying magnetization patterns and other issues in magnetic recording physics. The technique provides high magnetic contrast, submicrometer resolution, requires a minimum of sample preparation, and can be used with both soft and hard magnetic materials. We have developed a MFM designed around a novel optical-fiber interferometer incorporating a laser diode, and have used it to study a variety of thin films of recording media. We have imaged transitions written with a recording head in both CoPtCr, a longitudinal medium in which the magnetization lies in plane, and CoCr, a perpendicular medium. The MFM revealed fine structure such as intrinsic media noise on virgin media, detail within magnetic transitions, and side-writing effects. We have also used the MFM to study the erase band created during overwrite under various conditions. In films of SmCo, a novel thin-film medium, the MFM revealed that there exists a minimum spacing between transitions below which the magnetization pattern cannot be sustained. In order to improve lateral imaging resolution, we have fabricated tips by sputter coating nonmagnetic tungsten tips with 50 nm of CoPtCr. Using these tips we have achieved resolution well under 100 nm.Type of Medium: Electronic ResourceURL: -
10Articles: DFG German National LicensesStaff View
ISSN: 1399-3054Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: BiologyType of Medium: Electronic ResourceURL: -
11Articles: DFG German National LicensesVenkatesan, M. ; Fitzgerald, C. B. ; Douvalis, A. P. ; Sanders, I. S. ; Coey, J. M. D.
[s.l.] : Macmillian Magazines Ltd.
Published 2002Staff ViewISSN: 1476-4687Source: Nature Archives 1869 - 2009Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsNotes: [Auszug] There are recent reports of weak ferromagnetism in graphite and synthetic carbon materials such as rhombohedral C60 (ref. 4), as well as a theoretical prediction of a ferromagnetic instability in graphene sheets. With very small ferromagnetic signals, it is difficult to be ...Type of Medium: Electronic ResourceURL: -
12Articles: DFG German National LicensesStaff View
ISSN: 0013-8266Topics: HistoryURL: -
13Articles: DFG German National LicensesStaff View
ISSN: 0360-1315Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: EducationType of Medium: Electronic ResourceURL: -
14Articles: DFG German National LicensesStaff View
ISSN: 0042-207XSource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision MechanicsPhysicsType of Medium: Electronic ResourceURL: -
15Articles: DFG German National LicensesStaff View
ISSN: 1476-4687Source: Nature Archives 1869 - 2009Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsNotes: [Auszug] SANDERS REPLIES-Strachan and Treloar favour contemporaneous (1,100-1,000 Myr BP) metamorphism for both the eclogite-bearing basement and the Moine cover in the Glenelg region. To sustain their view, they suggest that the abnormally high metamorphic pressure (〈12kbar) inferred for the basement1 ...Type of Medium: Electronic ResourceURL: -
16Articles: DFG German National LicensesSanders, I. S. ; van Calsteren, P. W. C. ; Hawkesworth, C. J.
[s.l.] : Nature Publishing Group
Published 1984Staff ViewISSN: 1476-4687Source: Nature Archives 1869 - 2009Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsNotes: [Auszug] The two samples selected for analysis, S215 and S274, are fresh, coarse-grained (gt;2mm), granoblastic rocks: S215 consists of pale green, omphacitic pyroxene, pink garnet and some interstitial pargasite; S274 has more deeply coloured omphacite and garnet, and contains much quartz. Both rocks carry ...Type of Medium: Electronic ResourceURL: -
17Articles: DFG German National LicensesSanders, I. R. ; Streitwolf-Engel, R. ; van der Heijden, M. G. A. ; Boller, T. ; Wiemken, A.
Springer
Published 1998Staff ViewISSN: 1432-1939Keywords: Key words Arbuscular mycorrhizal symbiosis ; Belowground respiration ; Elevated CO2 ; Soil aggregation ; Soil carbonSource: Springer Online Journal Archives 1860-2000Topics: BiologyNotes: Abstract Prunella vulgaris was inoculated with different arbuscular mycorrhizal fungi (AMF) and grown at two concentrations of CO2 (ambient, 350 μl l−1, and elevated, 600 μl l−1) to test whether a plants response to elevated CO2 is dependent on the species of AMF colonizing the roots. Using compartments accessible only to AMF hyphae but not to roots, we also tested whether elevated CO2 affects the growth of external AMF hyphae. Plant biomass was significantly greater at elevated than at ambient CO2; the biomass of the root system, for example, increased by a factor of 2. The colonization of AMF inside the root remained constant, indicating that the total AMF inside the root system also increased by a factor of 2. The length of external AMF hyphae at elevated CO2 was up to 5 times that at ambient CO2, indicating that elevated CO2 promoted allocation of AMF biomass to the external hyphae. The concentration and content of phosphorus in the stolons differed significantly between ambient and elevated CO2 but this resulted in either an increase or a decrease, according to which AMF isolate occupied the roots. We hypothesized that an increase in external hyphal growth at elevated CO2 would result in increased P acquistion by the plant. To test this we supplied phosphorus, in a compartment only accessible to AMF hyphae. Plants did not acquire more phosphorus at elevated CO2 when phosphorus was added to this compartment. Large increases in AMF hyphal growth could, however, play a significant role in the movement of fixed carbon to the soil and increase soil aggregation.Type of Medium: Electronic ResourceURL: -
18Articles: DFG German National LicensesStaff View
ISSN: 1432-1939Keywords: Herbivory Lycaenidae Mycorrhiza Plant-fungal-insect interactions Polyommatus icarusSource: Springer Online Journal Archives 1860-2000Topics: BiologyNotes: Abstract. Results from pot and microcosm studies in the greenhouse have shown that plant growth and foliar chemistry is altered by the presence and species composition of arbuscular mycorrhizal fungi (AMF). The growth and survival of herbivores which feed on plants could, as a consequence, also be affected by these mutualistic soil fungi. Consequently, interactions between AMF, plants and herbivores could occur. To test this, larvae of the common blue butterfly, Polyommatus icarus (Lycaenidae), were fed with sprigs of Lotus corniculatus (Fabaceae) plants which were inoculated with one of two different AMF species, with a mixture of these AMF species or with sprigs of plants which were not inoculated with AMF. Survival and larval weight of third instar larvae fed with plants colonised by AMF were greater than those of larvae fed with non-mycorrhizal plants. Survival of larvae feeding on non-mycorrhizal plants was 1.6 times lower than that of larvae feeding on plants inoculated with a mixture of AMF species and 3.8 times lower than that of larvae feeding on plants inoculated with single AMF species. Furthermore, larvae fed with non-mycorrhizal plants attained only about half the weight of larvae fed with mycorrhizal plants after 11 days of growth. These differences in larval performance might be explained by differences in leaf chemistry, since mycorrhizal plants had a 3 times higher leaf P concentration and a higher C/N-ratio. Our results, thus, show that the presence of belowground mutualistic soil fungi influences the performance of aboveground herbivores by altering their food quality. Larval consumption, larval food use and adult lipid concentrations of the common blue butterfly differed between larvae which were fed with plants inoculated with different AMF species. This suggests that the performance of herbivores is not only influenced by the presence of AMF but also depends on the identity of the AMF species colonising the host plants. Moreover, a significant interaction term between AMF species and maternal identity of the larvae occurred for adult dry weight, indicating that the performance of offspring from different females was differently influenced by AMF species composition. To our knowledge, these results show for the first time that the species composition of AMF communities can influence life-history traits of butterfly larvae and possibly herbivores in general.Type of Medium: Electronic ResourceURL: -
19Articles: DFG German National LicensesStaff View
ISSN: 1432-2048Keywords: Binding (ethylene) ; Ethylene (metabolism, binding) ; Medicago (ethylene) ; Pisum (ethylene)Source: Springer Online Journal Archives 1860-2000Topics: BiologyNotes: Abstract Methods are described for the rigorous measurement of C2H4 metabolism and C2H4 binding in plant tissue. Comparisons are drawn between the results obtained using other methods and those which emerge from our studies, indicating that significant misapprehensions may have arisen in relation both to the distribution of metabolism and binding.Type of Medium: Electronic ResourceURL: -
20Articles: DFG German National LicensesStaff View
ISSN: 1432-2048Keywords: Ethylene (metabolism) ; Inhibitor (of ethylene) ; Pisum (ethylene metabolism)Source: Springer Online Journal Archives 1860-2000Topics: BiologyNotes: Abstract The possible role of C2H4 metabolism in mediating the responses of plants to C2H4 is re-examined. It is demonstrated that (i) the effects of inhibitors upon C2H4 action do not correspond with their effects on metabolism, (ii) elicitors of C2H4 effects do not have appropriate effects on C2H4 metabolism, (iii) inhibitors of C2H4 metabolism do not affect the response of plants to C2H4. It is concluded that metabolism of C2H4 is not linked to the mode of action of the growth regulator.Type of Medium: Electronic ResourceURL: