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  • 1980-1984  (7)
  • Breeding season  (3)
  • Chemical Engineering  (3)
  • Analytical Chemistry and Spectroscopy
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Material
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Year
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Spawning and nesting behavior of the waccamaw darter,Etheostoma perlongum (1981)
    Springer
    Environmental biology of fishes 6 (1981), S. 177-191 
    Details
    ISSN: 1573-5133
    Keywords: Fecundity ; Reproduction ; Sexual dimorphism ; Migration ; Nuptial coloration ; Breeding season ; Courtship ; Mating ; Sex ratio ; Gonad development ; Fish ; Percids
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Synopsis The spawning and nesting behavior ofEtheostoma (Boleosoma) perlongum was investigated in the field and laboratory. Sexual dimorphism is highly developed in such features as genital papillae, first dorsal and paired fins, and nuptial coloration. A reproductive migration from mid-lake to shore occurs in the spring: males precede females to select nest sites under submerged sticks and other debris. The male excavates a depression beneath the submerged object. Gonad analysis indicates a single spawning season extending from March through June. Nests were found from late April to mid-June and were guarded by a single male for periods of 13 to 36 days. Males initiate courtship by lateral display, lead the female to the nest site and show the nest by inverting. The female responds by tail up, tail wag and circle; males also tail wag and circle. Spawning pairs invert, usually in unison, and orient head to head or, less often, head to tail. The female deposits eggs while holding her body in a weak ‘S’ or ‘J’ shape with the caudal peduncle held away from the spawning substrate while vibrating.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00002781
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Breeding behavior and early life history of the waccamaw killifish,Fundulus waccamensis (1983)
    Springer
    Environmental biology of fishes 8 (1983), S. 293-300 
    Details
    ISSN: 1573-5133
    Keywords: Breeding season ; Nuptial dichromatism ; Courtship ; Agonistic ; Territorial ; Sexual behavior ; Mating ; Gonadal development ; Eggs ; Larvae ; Egg burying ; Cyprinodontid
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Synopsis The territorial, courtship and spawning behavior ofFundulus waccamensis was investigated in the field and laboratory. Spawning occurs from April to August. Sexual dimorphism is manifested through dichromatism, genitalia, morphometric differences and contact structures. In nature, nuptial males vigorously defend circular territories and court entering females by circling them, sidling, ‘J’ shaping and spawning in the sand substrate. In the aquarium, males perform eight advertisement motor patterns during courtship, of which dipping and flashing are most frequent. The female is relatively inactive, performing only two basic acts. The maximum number of mature eggs per ovary is 120. Both mature egg numbers and total egg numbers are highly correlated with standard length. Recently fertilized eggs are colorless and adhesive. The newly hatched young is well developed and relatively large in size.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00001095
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Selection of sites for egg deposition and spawning dynamics in the waccamaw darter (1984)
    Springer
    Environmental biology of fishes 11 (1984), S. 107-112 
    Details
    ISSN: 1573-5133
    Keywords: Experimental spawning cover ; Breeding season ; Nest choice ; Nest fidelity ; Nest egg number ; Nest quality ; Male and female size ; Fish ; Percids
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Synopsis We provided 93 experimental spawning covers for the waccamaw darter. We grouped the covers (3 sizes of slate and one of concave tile) in three arrangements at six Lake Waccamaw locations to separate the variables of water depth, distance from shore, cover density and cover type. Tag returns of marked males suggest low fidelity for nest sites. Egg production under the 3 different sizes of slate was not significantly different. Egg production under the tile was significantly less than that under the slates. Egg production was significantly higher off the undeveloped southeastern shore in 2 m of water and lowest at the shallowest location with the highest experimental cover density. The number of eggs in nest is positively correlated with male size. We conclude that medium size slate covers placed in a linear arrangement in 2 m of water on a mixed sand bottom result in the highest egg production for the waccamaw darter.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00002259
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Capillary gas chromatographic/mass spectrometric analysis of abnormal metabolites in hypoglycin-treated rat urine (1984)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 11 (1984), S. 332-339 
    Details
    ISSN: 0306-042X
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Numerous abnormal metabolites were identified in large amounts in the urine of hypoglycin-treated rats using capillary gas chromatography/mass spectrometry-computer analysis. These metabolites are not detectable in significant amounts in normal rats' urine. Ten of them have not been previously associated with hypoglycin administration: these are several hydroxy compounds, including those from the valine and isoleucine pathways, 2-oxo-adipic acid, n-butyrylglycine and isovaleryl glucuronide. These results indicate that the pathways of isoleucine and valine netabolism are inhibited at their respective acyl-CoA dehydrogenation steps, as is the case for fatty acid, leucine and lysine metabolism, as previously shown. The mass spectra of the trimethylsilyl derivatives of cis, cis-4,7-decadiene-1,10-dioic, cis-4-decene-1,10-dioic, cis-4-octene-1,8-dioic acids, and (methylenecyclopropyl)acetylglycine, which were previously identified using nuclear magnetic resonance and oxidative cleavage or acid hydrolysis, are presented for the first time.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bms.1200110704
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Repair of TMI-1 OTSG tube failures. Use of a kinetic tube-expansion process to resesal tubes within the upper tube sheet provides a cost-effective and relatively low-expousure repair process (1983)
    New York, NY : Wiley-Blackwell
    Plant/Operations Progress 2 (1983), S. 173-175 
    Details
    ISSN: 0278-4513
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prsb.720020312
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    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Test method evaluation for fiber-reinforced molding materials (1980)
    Brookfield, Conn. : Wiley-Blackwell
    Polymer Composites 1 (1980), S. 56-61 
    Details
    ISSN: 0272-8397
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Standard test methods ASTM D-651 for determining tensile properties and ASTM D-790 for flexure properties are evaluated. Heterogeneous fiber distributions due to molding flow conditions are shown to yield test specimens wherein fiber orientation near surfaces is highly collimated while orientations in central regions are oriented approximately transverse to the specimen axis. In addition, the converging and diverging flow fields in the dog bone (ASTM D-651) specimen with end gate are shown to yield a variation in fiber orientation along the specimen length. Finite element analysis of the dog bone (ASTM D-651) reveals that stress concentrations and a non-uniform stress distribution are introduced due to the required gripping arrangement of the test standard. The flexural specimen is decomposed into two elements of a collimated and transverse fiber orientations and a mathematical model is developed which reflects the composite behavior of the beam specimen. Finally, it is concluded that the D-651 and D-790 test methods do not reveal intrinsic design data for fiber reinforced molding materials.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pc.750010111
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Behavior of discontinuous fiber composites: Fiber orientation (1982)
    Brookfield, Conn. : Wiley-Blackwell
    Polymer Composites 3 (1982), S. 34-39 
    Details
    ISSN: 0272-8397
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The behavior of polymeric materials reinforced by discontinuous. Descriptors for the planar and axial orientation distributions are discussed. Predictions of micromechanical models and experimental data are presented to illustrate the influence of orientation state upon elastic constants, thermal coefficients of expansion and tensile strength. Results are presented for the notched strength and compressive creep behavior of the glass/phenolic composite of two orientation states. Finally, the implications of these results upon the design of elements molded of discontinuous fiber composites are discussed.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pc.750030107
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    Paper (German National Licenses)
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