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  • Springer  (3)
  • 2010-2014
  • 1975-1979  (3)
  • 1
    Publication Date: 1975-10-01
    Print ISSN: 0014-4851
    Electronic ISSN: 1741-2765
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Published by Springer
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Entomologia experimentalis et applicata 25 (1979), S. 279-288 
    ISSN: 1570-7458
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Zusammenfassung Bei Fünftlarven von Schistocerca gregaria wurde analysiert, welche Rolle die Maxillar- und Labialpalpen beim Frassbeginn und während des Fressens spielen. Palpenlose Insekten nahmen einzelne Chemikalien vor dem Fressen weniger wahr und frassen auch weniger als Kontrolltiere. Die sensorische Qualität suboptimalen Futters konnte durch einen attraktiven Geruch verbessert werden, was zu verlängerter Fresszeit bei palpenlosen Insekten, nicht aber bei Kontrolltieren, führte. Palpenlose Insekten, die auf einer Diät von Salat und Kleie gehalten wurden, frassen weniger Kleie und mehr Salat als Kontrolltiere, wobei das Volumen der aufgenommenen Nahrung gleich blieb. Durch den erhöhten Salatkonsum wurde die Trockensubstanzmenge der aufgenommenen Nahrung vermindert. Als Folge davon nahmen die Tiere während des fünften Larvenstadiums gesichert weniger an Trockensubstanz zu als Kontrolltiere.
    Notes: Abstract The role of the maxillary and labial palps in the initiation and maintenance of feeding has been analysed in female fifth-instar nymphs of Schistocerca gregaria. The ability to perceive single chemicals prior to feeding and to feed to repletion on them is markedly reduced in the absence of the palps. Increasing the sensory input of suboptimal diets by providing an attractive odour results in an increased meal length in insects without palps but not in controls. Insects without their palps reared on a diet of lettuce and bran eat relatively less bran and more lettuce than do the controls, although the total volume of food ingested is the same. The smaller dry weight of food consumed as a result of this greater lettuce intake results in a significantly smaller dry weight gain over the fifth instar.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Experimental mechanics 15 (1975), S. 396-402 
    ISSN: 1741-2765
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract This paper presents the design of a unique materials-testing system capable of medium strain rates of from 10−4 to 102/s. The design incorporates both closed-loop hydraulic operation with that of open-loop pneumatic operation. A novel design permits accurate specimen alignment and a stiff frame which exceeds 17×106 lb/in. (11.7×104 MPa). The mechanine is able to perform conventional tension/compression tests, fatigue tests and, with slight modification, biaxial-stress-tube tests and triaxial-stress tests. The accurate alignment capability coupled with high frame stiffness and the pneumatic operation enables the testing of brittle materials with rigid grips. Titanium 6-6-2 was tested in both tension and compression at strain rates from 10−4 to about 10/s at four selected temperatures. The material showed a slight strain-rate sensitivity. Yield stress was shown to increase with strain rate while ductility decreased at each test temperature.
    Type of Medium: Electronic Resource
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