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  • 1990-1994  (10)
  • 1985-1989
  • 1915-1919
  • 1994  (6)
  • 1993  (4)
  • 1
    Electronic Resource
    Electronic Resource
    The value of serial ultrasounds in the management of recurrent uterine scar rupture (1994)
    Oxford, UK : Blackwell Publishing Ltd
    BJOG 101 (1994), S. 0 
    Details
    ISSN: 1471-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-0528.1994.tb13163.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    The influence of soil factors on the growth of a grass/clover sward on a restored opencast site in Northumberland, UK (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 49 (1994), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The growth of grass and clover components in mixed swards on a site restored after opencast coal mining and an undisturbed control site were compared. Soil nitrogen supply was reduced at the restored site. This inhibited grass growth but was beneficial for the clover component.Growth at the restored site was also inhibited by a compacted subsoil, which reduced available soil water content and impeded access to available soil water. This inhibited crop production from the middle of the second silage crop onwards. In 1989 this was associated with the soil at the restored site reaching permanent wilting point at 40cm. In 1990 this effect was associated with the restored site soil reaching permanent wilting point at 70cm. These drought effects reduced clover growing point population and stolon mass. Grass tiller populations were unaffected.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1994.tb02022.x
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Allergic contact dermatitis from TENS gel (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Contact dermatitis 30 (1994), S. 0 
    Details
    ISSN: 1600-0536
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-0536.1994.tb00608.x
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    The effect of oximes on the dihydropyridine-sensitive Ca current of isolated guinea-pig ventricular myocytes (1993)
    Springer
    Pflügers Archiv 422 (1993), S. 325-331 
    Details
    ISSN: 1432-2013
    Keywords: Myocyte ; Voltage clamp ; Ionic currents ; Oximes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Exposure of isolated guinea-pig ventricular myocytes to the uncharged oximes 2,3 butanedionemonoxine (BDM) and norPAM (but not by the charged PAM) results in a dose-dependent reduction of the duration of the action potential. The nifedipine-sensitive Ca current is fully inhibited by BDM (IC505.8±0.4 mM) and nor PAM but is little affected by PAM. This inhibition is unaltered by the presence of BAY K 8644 but is antagonized by isoprenaline. The effect of isoprenaline is more pronounced when the solution in the patch pipette contains the non-hydrolysable analogue of adenosine 5′-triphosphate, ATPγS (the IC50 is increased to 44.0±5.2 mM). A hastening of the inactivation of the L-type Ca current persists when either 10 mM 1,2-bis(2-aminophenoxy)-ethane-N, N, N′, N-tetraacetic acid (BAPTA) or 3 mM ATPγS is present in the pipette solution or when BAY K 8644 or isoprenaline are present in the bathing fluid. These results suggest that the inhibition of the Ca current is due to the phosphatase-like activity of the oximes but differs in some respects from previous work where a reduced level of phosphorylation is achieved by the introduction of protein kinase inhibitors or protein phosphatases into the sarcoplasm in guinea-pig myocytes. These differences could be explained if Ca channel availability is regulated by at least two sites of cAMP-dependent phosphorylation with oximes able to rapidly dephosphorylate both sites, while one of these sites is not readily dephosphorylated by the endogenous phosphatases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00374287
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Effects of fluvalinate on two-spotted spider mite dispersal, fecundity and feeding (1994)
    Springer
    Entomologia experimentalis et applicata 71 (1994), S. 145-153 
    Details
    ISSN: 1570-7458
    Keywords: fluvalinate ; pyrethroids ; spider mites ; Tetranychus urticae ; behaviour ; sub-lethal effects
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Residual deposits of fluvalinate caused two-spotted spider mite,Tetranychus urticae Koch, dispersal by running off (run-off) and spinning down (spin-down) from treated leaves. Run-off occured at concentrations from 0.0005 g a.i. 1−1 and reached a peak at 0.01 g a.i. 1−1. Spin-down was more predominant at concentrations above 0.01 g a.i. 1−1. Spin-down and run-off proportions varied with fluvalinate formulation. Oviposition was temporarily suppressed on fluvalinate-treated leaves, presumably because of an irritant effect which reduced feeding. An emulsifiable concentrate formulation caused the largest reductions in oviposition. Oviposition returned to the level exhibited by untreated mites two days after removal from treated surfaces. Oviposition and feeding were positively correlated and both declined reciprocally with increasing fluvalinate concentration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02382382
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    The importance of palpation in food selection by a polyphagous grasshopper (Orthoptera: Acrididae) (1993)
    Springer
    Journal of insect behavior 6 (1993), S. 79-91 
    Details
    ISSN: 1572-8889
    Keywords: associative learning ; grasshopper ; palpation ; plant surface
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The behavioral responses of final-instar nymphs of Schistocerca americanato a variety of acceptable and unacceptable plants were recorded. Palpation occurred on all plants and the palps are involved in both acceptance and rejection. On most unacceptable plants, rejection was at first dependent on biting the leaf, but subsequently on Lantana, Machaeranthera, Moms,and Physalis,rejection often occurred after palpation of the surface alone. This is consistent with the suggestion that associative learning occurs. This response did not wane even when the insects had been without food for over 2 h. There was also some evidence of an innate response to the surface characteristics of Physalis.The features of the surfaces that produced these responses were not determined.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01049149
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  • 7
    Electronic Resource
    Electronic Resource
    Miticide bioassays with spider mites (Acari: Tetranychidae): effect of test method, exposure period and mortality criterion on the precision of response estimates (1993)
    Springer
    Experimental and applied acarology 17 (1993), S. 695-708 
    Details
    ISSN: 1572-9702
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Six different bioassay methods were evaluated using propargite (Omite 30% wettable powder (WP) and fenbutatin oxide (Torque 50% (WP) and 55% suspension concentrate (SC)) with twospotted spider mite, Tetranychus uriticae Koch (TSM) and European red mite, Panonychus ulmi Koch (ERM) to document their utility and precision for estimating median lethal concentrations (LC). For each method, two post-treatment exposure periods and mortality criteria were used. Post-treatment exposure period and mortality criterion had a significant influence on the precision of LC50 estimates for all tested miticides with all bioassays methods. Twenty four hour (h) post-treatment exposure was found to be the most suitable for the slide dip and Petri dish methods while 48h was the most appropriate for leaf disc methods. Scoring moribund mites as dead was the most satisfactory criterion for ensuring that biossays were as simple and precise as possible. The Petri dish residue-Potter tower method (PDR-PT) estimated the responses of TSM and ERM to propargite with high precision. The same method was not as precise for fenbutatin oxide formulations. Because significant mite run-off occurred with the leaf disc methods, their precision was not fully established. The slide dip method gave less precise estimates of LC50 values for propargite (WP) and fenbutatin oxide (WP), while the same method gave more precise LC50 estimates for fenbutatin oxide (SC) than the PDR-PT method. The toxicity of candidate miticides was found to be method-and species-dependent.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00058509
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    The relationship between plant acceptability and suitability for survival and development of the polyphagous grasshopper,Schistocerca americana (Orthoptera: Acrididae) (1994)
    Springer
    Journal of insect behavior 7 (1994), S. 411-431 
    Details
    ISSN: 1572-8889
    Keywords: development ; food aversion learning ; grasshopper ; habituation ; plant acceptability ; polyphagy ; survival
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The feeding behavior of final-instar nymphs ofSchistocerca americana was observed when they first encountered plants that ranged in acceptability from being eaten in large amounts to not being eaten at all. Growth and survival on the same plants through the last stadium were also studied and the results combined as a suitability index to facilitate comparison with the behavior. Although the plants that were eaten most gave the highest suitability index and those that were not eaten permitted no survival, there was no simple relationship between the amounts eaten and the suitability for growth and survival. The possibility that the insects might become habituated to plants that were initially unacceptable was investigated, but no habituation was found over a 3-day period. It is suggested that food intake is largely determined by the presence of deterrent compounds in the less acceptable foods and that nutritional differences between the plants are likely to have been of minor importance. The behavior on some foods suggests that food aversion learning may be involved. It is concluded that the variability of the insects' behavior makes it impossible to predict the suitability of a plant from their immediate behavioral responses. In the field, insects may sometimes reject foods that would be suitable for survival and development, and feed on plants that are nutritionally deficient or even toxic.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02025441
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    Monophagy in a polyphagous grasshopper,Schistocerca shoshone (1994)
    Springer
    Entomologia experimentalis et applicata 73 (1994), S. 255-264 
    Details
    ISSN: 1570-7458
    Keywords: grasshopper ; monophagy ; polyphagy ; Simmondsia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The feeding behavior of different populations of the grasshopper,Schistocerca shoshone, was investigated in the southwestern United States. Insects from three riparian populations, with a broad spectrum of plants available to them, tended to eat plants roughly in relation to their availability except that broad-leaved herbaceous plants were avoided. Insects from a desert population in a plantation ofSimmondsia fed exclusively on that plant, as did those from another population in the Tucson mountains, despite the availability of a range of other plants. Insects from a third desert population, near Portal, fed mainly onProsopis, the dominant woody plant. In detailed behavioral experiments in the laboratory, insects from Tucson mountains readily acceptedSimmondsia, and less readily acceptedProsopis. Three other common woody plants from the habitat were generally rejected without feeding. Insects from Portal acceptedProsopis andSimmondsia with approximately equal readiness. Breeding experiments suggested that the differences between the plantation insects and those from Portal was genetic and not induced by experience. The insects from both populations were potentially polyphagous and ate a wide range of plants in the laboratory if given no alternative.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02382477
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    Paper (German National Licenses)
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  • 10
    Electronic Resource
    Electronic Resource
    Cerebral intraventricular haemorrhage in a young adult (1993)
    Springer
    International journal of legal medicine 105 (1993), S. 243-245 
    Details
    ISSN: 1437-1596
    Keywords: Intraventricular haemorrhage ; Head injury ; Traumatic subarachnoid haemorrhage ; Intraventrikuläre Blutung ; Kopftrauma ; Traumatische Subarachnoidalblutung
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Law
    Description / Table of Contents: Zusammenfassung Der Fall eines 26 Jahre alten Mannes wird beschrieben, welcher nach einer Episode von Traumen eine tödliche intraventrikuläre Hirnblutung erlitt. Bei der Obduktion wurde nach dem ersten Eindruck eine traumatische Subarachnoidalblutung vermutet, und die anfängliche Untersuchung war daher auf die Strukturen des Halses und auf die Vertebralarterien gerichtet, jedoch mit negativen Resultaten. Die Sektion des fixierten Gehirns zeigte eine massive intraventrikuläre Blutung mit sekundärer Beteiligung des Subarachnoidalraums und Ausbreitung in das Hirnparenchym. Keine Blutungsquellen oder natürliche Erkrankungen der Hirngefäße konnten gefunden werden. Die praktischen Aspekte der Diagnose und der vorsichtige Ansatz, welcher notwendig ist, um Subarachnoidalblutungen zu interpretieren, werden betont. Die Bedeutung der intraventrikulären Blutung nach Trauma ist mit der Einführung der Computertomographie offensichtlicher geworden. Die Implikationen dieses und ähnlicher Fälle werden bedacht.
    Notes: Summary A case of a 26-year-old man who suffered a fatal intraventricular cerebral haemorrhage following an episode of trauma is described. The initial appearance at necropsy suggested a traumatic subarachnoid haemorrhage and initial investigation was directed towards the anterior neck structures and the vertebral arteries with negative results. Dissection of the fixed brain showed a massive intraventricular bleed with secondary involvement of the subarachnoid space and dissection into the cerebral parenchyma. No bleeding points or natural disease of the cerebral vessels could be identified. The practical aspects of diagnosis and the cautious approach necessary in interpreting subarachnoid bleeding is emphasised. The significance of intraventricular haemorrhage following trauma has become more apparent with the advent of computed tomographic scanning. The implications for this and similar cases are considered.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01642802
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