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  • 1
    Electronic Resource
    Electronic Resource
    Polarographic Reduction of Polynitrate Esters (1954)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 76 (1954), S. 4711-4714 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja01647a064
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  • 2
    Electronic Resource
    Electronic Resource
    Cystic Fibrosis Transmembrane Conductance Regulator (CFTR) Confers Glibenclamide Sensitivity to Outwardly Rectifying Chloride Channel (ORCC) in Hi-5 Insect Cells (1999)
    Springer
    The journal of membrane biology 168 (1999), S. 229-239 
    Details
    ISSN: 1432-1424
    Keywords: Key words:Trichoplusia ni insect cells (Hi-5) — Baculovirus — Cystic fibrosis transmembrane conductance regulator (CFTR) chloride channel — Glibenclamide — Outwardly rectifying chloride channel (ORCC)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract. Increasing evidence is now accumulating for the involvement of the cystic fibrosis transmembrane conductance regulator (CFTR) in the control of the outwardly rectifying chloride channel (ORCC). We have examined the sensitivity of ORCC to the sulfonylurea drug glibenclamide in Hi-5 (Trichoplusia ni) insect cells infected with recombinant baculovirus expressing either wild-type CFTR, ΔF508-CFTR or E. coliβ galactosidase cDNA and in control cells either infected with virus alone or uninfected. Iodide efflux and single channel patch-clamp experiments confirmed that forskolin and 1-methyl-3-isobutyl xanthine (IBMX) or 7-methyl-1,3 dipropyl xanthine (DPMX) activate CFTR channels (unitary conductance: 9.1 ± 1.6 pS) only in cells expressing CFTR. In contrast, we identified 4-acetamido-4′-isothiocyanatostilbene-2,2′-disulfonic acid (SITS)-sensitive ORCC in excised membrane patches in any of the cells studied, with similar conductance (22 ± 2.5 pS at −80 mV; 55 ± 4.1 pS at +80 mV) and properties. In the presence of 500 μm SITS, channel open probability (P o ) of ORCC was reversibly reduced to 0.05 ± 0.01 in CFTR-cells, to 0.07 ± 0.02 in non-CFTR expressing cells and to 0.05 ± 0.02 in ΔF508-cells. In Hi-5 cells that did not express CFTR, glibenclamide failed to inhibit ORCC activity even at high concentrations (100 μm), whereas 500 μm SITS reversibly inhibited ORCC. In contrast in cells expressing CFTR or ΔF508, glibenclamide dose dependently (IC50= 17 μm, Hill coefficient 1.2) and reversibly inhibited ORCC. Cytoplasmic application of 100 μm glibenclamide reversibly reduced P o from 0.88 ± 0.03 to 0.09 ± 0.02 (wash: P o = 0.85 ± 0.1) in CFTR cells and from 0.89 ± 0.05 to 0.08 ± 0.05 (wash: P o = 0.87 ± 0.1) in ΔF508 cells. In non-CFTR expressing cells, glibenclamide (100 μm) was without effect on P o (control: P o = 0.89 ± 0.09, glib.: P o = 0.86 ± 0.02; wash: P o = 0.87 ± 0.05). These data strongly suggest that the expression of CFTR confers glibenclamide sensitivity to the ORCC in Hi-5 cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002329900512
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  • 3
    Electronic Resource
    Electronic Resource
    Expression of intermediate filament proteins in TPA-induced MPC-11 and HL-60 cells
    Amsterdam : Elsevier
    Experimental Cell Research 199 (1992), S. 363-372 
    Details
    ISSN: 0014-4827
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0014-4827(92)90446-F
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  • 4
    Electronic Resource
    Electronic Resource
    Differences in the Transbilayer and Lateral Motions of Fluorescent Analogs of Phosphatidylcholine and Phosphatidylethanolamine in the Apical Plasma Membrane of Bovine Aortic Endothelial Cells
    Amsterdam : Elsevier
    Experimental Cell Research 208 (1993), S. 387-397 
    Details
    ISSN: 0014-4827
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1006/excr.1993.1260
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  • 5
    Electronic Resource
    Electronic Resource
    Lixus cribricollis [Col.: Curculionidae] for biological control of the weedsEmex spp. andRumex crispus in Australia (1982)
    Springer
    BioControl 27 (1982), S. 439-446 
    Details
    ISSN: 1573-8248
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Résumé La biologie et la spécificité d'une population deLixus cribricollis Boheman provenant du Maroc ont été étudiées en quarantaine en Australie. Les adultes deL. cribricollis vivent longtemps, ils présentent une estivation et sont univoltins. On a montré queRumex cripus L.,Emex australis Steinheil etE. spinosa (L.)Compdere sont les seules plantes hôtes valables parmi les 40 espèces de 17 familles de plantes exposées à des adultes deL. cribricollis sexuellement mûrs. Une alimentation normale et une ponte occasionnelle ont été constatées sur certaines autres plantes de la même famille, lesPolygonaceae, y compris les cultures mineures que sont la rhubarbe et la renouée, mais presque invariablement les larves sont mortes au 1er stade. On en conclut queL. cribricollis peut constituer un utile agent de lutte biologique contre les mauvaises herbes,R. crispus, E. australis etE. spinosa et que l'établissement de ce charançon en Australie serait sans risque pour des plantes non visées.
    Notes: Abstract The biology and host specificity of a colony ofLixus cribricollis Boheman originating in Morocco were studied in quarantine in Australia.L. cribricollis adults are long lived, have an aestivation and are univoltine.Rumex crispus L.,Emex australis Steinheil andE. spinosa (L.)Campdera were shown to be the only satisfactory hosts of 40 species of plants from 17 families that were exposed to sexually mature adults ofL. cribricollis. Normal feeding and occasional oviposition were observed on some other plants within the same family,Polygonaceae, including the minor crops rhubarb and buckwheat, but almost invariably larvae died in the 1st instar. It was concluded thatL. cribricollis may be a useful biological control agent for the weedsR. crispus, E. australis andE. spinosa and that establishment of this weevil in Australia would be without risk to non-target plants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02372067
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  • 6
    Electronic Resource
    Electronic Resource
    Biological control of alligator weed: Unsuccessful attempts to control terrestrial growth using the flea beetleDisonycha argentinensis [Col.: Chrysomelidae] (1992)
    Springer
    BioControl 37 (1992), S. 215-221 
    Details
    ISSN: 1573-8248
    Keywords: Disonycha argentinensis ; alligator weed ; terrestrial growth ; biological control ; Disonycha argentinensis ; milieu terrestre ; lutte biologique ; Alternanthera philoxeroides
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Résumé En Australie, la lutte biologique contreAlternanthera philoxeroides, mauvaise herbe se développant en milieu aquatique, a été couronnée de succès mais les auxiliaires utilisés, un ColéoptèreAgasicles hygrophila et un LépidoptèreVogtia malloi sont inefficaces en milieu terrestre. Un autre Coléoptère,Disonycha argentinensis, fut donc introduit en Australie pour lutter contre le développement de cette mauvaise herbe en milieu terrestre. Les descendants des adultes récoltés au Brésil dans des zones similaires par le climat et le biotope à celles où croît la mauvaise herbe en Australie ont été relâchés mais ne se sont pas installés. Des œufs furent pondus par des femelles lâchées dans une grande cage sur le terrain et des adultes ont ainsi été obtenus, mais ceux-ci ne se reproduisirent pas. Cet échec peut s'expliquer par le microclimat ou la prédation qui auraient empêché l'installation deDisonycha argentinensis. Cependant ces résultats ne devraient pas empêcher des essais d'installation de cet insecte en Amérique du Nord, en Chine ou ailleurs.
    Notes: Abstract Biological control of alligator weed growing in aquatic habitats in Australia is successful but the agents, a flea beetleAgasicles hygrophila and a mothVogtia malloi, do not control terrestrial growth. Consequently another flea beetleDisonycha argentinensis was introduced into Australia specifically to control the terrestrial growth. Progeny of adults collected in Brazil from areas similar in climate and habitat to areas infested with alligator weed in Australia, were released but failed to become established. Eggs were laid by females released into a large field cage and some completed development, but the new adults failed to reproduce. Tentative conclusions are that microclimate or predation may have prevented establishment ofD. argentinensis but the results should not preclude attempts to establish this insect in North America, China or elsewhere.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02372420
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  • 7
    Electronic Resource
    Electronic Resource
    Zero temperature phase transitions in spin-ladders: Phase diagram and dynamical studies of (1998)
    Springer
    The European physical journal 6 (1998), S. 167-181 
    Details
    ISSN: 1434-6036
    Keywords: PACS. 75.10.Jm Quantized spin models - 75.40.-s Critical-points effects, specific heats, short range order - 76.60.-k Nuclear magnetic resonance and relaxation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: In a magnetic field, spin-ladders undergo two zero-temperature phase transitions at the critical fields Hc1 and Hc2. An experimental review of static and dynamical properties of spin-ladders close to these critical points is presented. The scaling functions, universal to all quantum critical points in one-dimension, are extracted from (a) the thermodynamic quantities (magnetization) and (b) the dynamical functions (NMR relaxation). A simple mapping of strongly coupled spin ladders in a magnetic field on the exactly solvable XXZ model enables to make detailed fits and gives an overall understanding of a broad class of quantum magnets in their gapless phase (between Hc1 and Hc2). In this phase, the low temperature divergence of the NMR relaxation demonstrates its Luttinger liquid nature as well as the novel quantum critical regime at higher temperature. The general behavior close these quantum critical points can be tied to known models of quantum magnetism.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100510050539
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  • 8
    Electronic Resource
    Electronic Resource
    63Cu NMR in the normal state of HgBa2Ca2Cu3O8+δ (1996)
    Springer
    Journal of low temperature physics 105 (1996), S. 371-376 
    Details
    ISSN: 1573-7357
    Keywords: 74.25.Nf ; 74.12.Jt ; 76.60.−k
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We present a63Cu NMR study of HgBa2Ca2Cu3O8+δ underdoped single crystals with Tc ≃ 115 K. While the uniform spin susceptibility decreases below To ≃ 370 K, relaxation rate measurements demonstrate the opening of a spingap at Q = (π, π) below T* ≃ 230 K, the highest temperature reported so far. The characteristic energy of spin fluctuations is shown to be higher than in underdoped YBa2Cu3O7−δ, and the analysis of the quadrupole and hyperfine couplings suggests that the in-plane Cu-O hybridization is also stronger. The T-dependence of T1 is the same in the three CuO2 planes which seems hardly compatible with the pure interlayer spin-pairing picture.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00768414
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  • 9
    Electronic Resource
    Electronic Resource
    Effects ofPuccinia xanthii onXanthium strumarium [Compositae] (1979)
    Springer
    BioControl 24 (1979), S. 29-34 
    Details
    ISSN: 1573-8248
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Résumé Des plants deXanthium strumarium L. ont été inoculés une fois au stade 4 feuilles avecPuccinia xanthii Schw, d'autres le furent 7 fois à environ 2 semaines d'intervalle à partir du stade 4 feuilles et d'autres furent protégés contre la rouille par des traitements fongicides. L'attaque parP. xanthii réduit le cycle de développement de la plante, sa croissance et sa productivité. La production de capsules est diminuée jusqu'à 59% mais la faculté germinative des graines n'est pas altérée. On en conclut que l'ensemble des effets deP. xanthii et pas seulement la réduction de production de capsules, peut assurer la lutte contreX. strumarium dans la nature.
    Notes: Abstract Plants ofXanthium strumarium L. were inoculated once withPuccinia xanthii Schw. during the 4 leaf stage, others were inoculated 7 times atca. 2 week intervals beginning at the 4 leaf stage, and others were protected from rust infection with regular fungicidal spray applications. Attack byP. xanthii was shown to shorten the plant life cycle and reduce plant growth rate and productivity. Burr production was reduced by up to 59% but percentage seed germination remained unchanged. It was concluded that the overall effects ofP. xanthii, and not reduced burr production alone, may achieve control ofX. strumarium in the field.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02377506
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  • 10
    Electronic Resource
    Electronic Resource
    Control and spread of Alligator Weed Alternanthera philoxeroides (Mart.) Griseb., in Australia: lessons for other regions (1997)
    Springer
    Wetlands ecology and management 5 (1997), S. 195-201 
    Details
    ISSN: 1572-9834
    Keywords: Alligator weed ; weed ; Alternanthera philoxeroides ; wetland ; biological control ; glyphosate ; metsulfuron ; dichlobenil
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Biological control of alligator weed Alternanthera philoxeroides (Mart.) Griseb. has been successful in limiting growth in water in areas with mild or warm winters, but not on land. Until recently, herbicides have had very limited short term and no long term effectiveness. Several herbicides that now provide better control include: glyphosate over water, and metsulfuron and dichlobenil on land and in shallow water. The latter two are limited by lack of selectivity, contamination of water, and cost. Mechanical or manual control has provided local eradication of the weed at a few locations where infestations were small. Alligator weed is still spreading with new outbreaks on New South Wales, Australia (NSW) coastal beach areas and coastal river systems, and on inland waterbodies. Its use as a cultivated vegetable by some ethnic communities has resulted in many new locations in all eastern Australia states: Queensland to Tasmania. It is predicted that it will spread throughout much of coastal and inland southern Australia. The difficulties with management of this weed indicate that every effort should be made to prevent further invasion of wetlands and, in particular, its introduction to Africa, where it is predicted that all wetlands could support destructive levels of alligator weed growth.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008248921849
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