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  • behavior  (9)
  • Conducting polymers  (5)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Behavior genetics 18 (1988), S. 371-382 
    ISSN: 1573-3297
    Keywords: burrowing ; behavior ; Peromyscus ; deermouse ; oldfield mouse
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Psychology
    Notes: Abstract Burrow construction abilities of laboratory-reared oldfield mice (Peromyscus polionotus), deermice (P. maniculatus), and their F1 hybrids were compared using a spacious earth-filled test chamber. Mated paris with nursing litters were individually introduced into the chamber for 4 days in each test. Oldfield mice bred in metal or plastic cages for 20 or more generations constructed elaborate burrows, with entrance and escape tunnels, tunnel plugs, next chambers, and nests, essentially like those of wild mice of this species. Prairie deermice maintained for 25 or more generations in captivity constructed shallow or superficial burrows characteristic of deermice in nature. F1 hybrids made burrows like those of oldfield mice, complete in all particulars. First-generation backcross animals tested for burrow building exhibited a spectrum of performances. Species difference in burrow construction is principally genetic in origin, and during 20–25 generations in captivity no substantial loss of this ability occurred. F1 hybrid data indicate that the more complex burrow building exhibits genetic dominance, and backcross results show that at least two and probably more gene loci strongly influence the trait.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1040-0397
    Keywords: Microelectrode ; Array electrode ; Conducting polymers ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: An individually addressable microelectrode array system has been developed in the course of this work. The performance of this system was investigated using conventional electrochemistry (oxidation/reduction or ferrocene carboxylic acid) to demonstrate that independent potential control and current measurement at each of the array components was possible. The practical utility of this system has been demonstrated using a conducting polymer based microarray detection system subsequent to Ion Chromatography. The detection of simple electroinactive ions (e.g., Cl-, SO42-, K+, NH4+) using the array system was achieved and the response at each of the array components was studied as a function of polymer composition.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1040-0397
    Keywords: Conducting polymers ; Electroinactive species ; Polypyrrole ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Previous workers have demonstrated that conducting electroactive polymers can be used to detect electroinactive species. In this work, the effect of polymer composition, the nature of the eluent, and the electrochemical waveform on the selectivity of this detection process have been investigated.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Electroanalysis 6 (1994), S. 860-864 
    ISSN: 1040-0397
    Keywords: Conducting polymers ; Electroinactive ions ; Microelectrodes ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The detection of electroinactive ions using conducting polymers has been described previously. In this work, we show that the analytical performance of this method is greatly improved using microelectrodes. The use of microelectrodes overcomes the problems associated with the implementation of this detection scheme in low conductivity eluents.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1040-0397
    Keywords: Conducting polymers ; Aluminum ; Polypyrrole ; Microelectrode ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Methods that enable the preparation of cation sensitive polymer-coated microelectrodes have been developed. The analytical utility of these electrodes has been demonstrated with the detection of aluminum in flowing solutions. Detection limits in the low ppb range have been obtained. The response for several potentially interfering cations was evaluated.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1040-0397
    Keywords: Conducting polymers ; Proteins ; FIA detection ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: In this article, we have demonstrated the feasibility of using dye binding interactions for the amperometric detection of proteins at conducting polymer coated electrodes with flow injection analysis. Incorporation of appropriate dyes into the conducting polymer during synthesis enables sensitive and selective responses to be obtained. The effects of eluent pH and applied potential on the responses obtained for a range of proteins have been investigated. These parameters can be used to modify selectivity and achieve sensitivity.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Hydrobiologia 66 (1979), S. 223-226 
    ISSN: 1573-5117
    Keywords: Diel activity ; behavior ; Penaeus duorarum ; shrimp ; circadian rhythm
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Twelve juvenile pink shrimp, Penaeus duorarum Burkenroad, were tested individually for 3-day periods in electronic shuttleboxes to determine their diel patterns of locomotor activity, in relation to a natural summer photoperiod. Nocturnal activity was twice that exhibited during the daytime; however, a bimodal pattern was evident with crepuscular peaks occurring at dawn and dusk. The dusk peak was more pronounced, with activity increasing markedly before sunset (indicative of an endogenous circadian rhythm component), and continuing during the initial hours of darkness, gradually declining later during the night with a secondary peak at dawn falling off to minimal activity during daylight. Crepuscular activity (mean of dawn and dusk) was twice the nocturnal average.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1573-5117
    Keywords: temperature ; behavior ; thermoregulation ; snail ; Nassarius trivittatus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Thirty New England dog whelks (Mollusca: Gastropoda: Nassariidae), Nassarius trivittatus, were tested as a group for 3 days in a long linear gradient trough encompassing a thermal gradient ranging from 5°C to 45°C. The modal thermal preferendum of the snails lay between 30°C and 35°C. The lowest temperature interval voluntarily occupied by the snails was 15–20°C, the highest 35–40°C. W e believe this to be the first published study of temperature preference and avoidance behavior of gastropod molluscs.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1573-5117
    Keywords: thermoregulation ; behavior ; temperature preference ; diel activity ; circadian rhythms ; frog ; Xenopus laevis ; amphibian
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Ten adult Xenopus laevis were tested individually for 48-hr periods, following an initial 24-hr introductory period, in electronic shuttleboxes which allowed them to control water temperatures without operant conditioning. Locomotor activity was recorded via photocell-monitored light beams. The frogs were nocturnal, being nearly twice as active at night as during the day. The mean preferred temperature was 22.4°C, with no significant difference between night (22.5°C) and day (22.3°C), although the modal preferendum shifted from 24°C by day to 22°C at night, with a corresponding change in skewness. The range of voluntarily occupied temperatures was 14–32°C by day and 14–29°C at night. The median thermal preferendum was 22°C both day and night.
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  • 10
    ISSN: 1573-5117
    Keywords: ambush predator ; Atrochidae ; behavior ; cannibalism ; Collothecacea ; Cupelopagis vorax ; predation ; predator-prey interactions ; sessile rotifer ; Rotifera
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract By rotating on a short, flexible, pedal stalk, Cupelopagis vorax captures prey that traverse the substratum to which this sessile rotifer attaches. Microvideographic analysis (including slow motion and freeze-frame) permitted us to examine some of the details of Cupelopagis foraging behavior. When undisturbed, Cupelopagis usually faces forward in a resting or neutral position (NP) with its unciliated infundibulum (corona) directed parallel to the surface of the substratum. However, vibrations produced by artificial means (fine pins) or small prey (protists) evoke unique behaviors in Cupelopagis. Our analysis of Cupelopagis foraging on two protozoan prey (Paramecium bursaria and a small, unidentified flagellate, SUF) indicates that this predator possesses a 360 ° encounter field (EF) biased towards the NP Size of the EF appears to be a function of both predator and prey size, but it extends at least 650 µm, as measured from the point of attachment of the predator's pedal stalk to the substratum. When a prey comes close to Cupelopagis, this predator can lean toward the organism, stretching forward on its pedal stalk and extending its corona over the prey in a swift motion (〈 0.5 s). Probability of capture after attack was a function of prey type (61.6% for P. bursaria and 41.5% for the SUF). Analysis of prey capture by Cupelopagis indicates that this predator has a handling time ranging from a few seconds to several minutes: 24.6 ± 16.8 s for P. bursaria (n= 274) and 34.6 ± 25.4 s for the SUF (n=111). Occasionally Cupelopagis sweeps part of the EF by retracting its corona, turning to the right or left (mean angle subtended ≈ 63 ° ± 42 °), unfolding the corona, and slowly returning to the original resting position. This behavior, termed surveillance, occurs in the presence or absence of prey. While not unique in its ability to detect water movements, Cupelopagis is the only rotifer known to exhibit specific behaviors to vibrations produced by potential prey.
    Type of Medium: Electronic Resource
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