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  • FLUID MECHANICS AND HEAT TRANSFER  (7)
  • Lepidoptera  (3)
  • Molecular Sequence Data  (3)
  • 2015-2019
  • 2005-2009
  • 1990-1994  (13)
  • 1990  (13)
  • 1
    Electronic Resource
    Electronic Resource
    Apple ermine moth,Yponomeuta malinellus Zeller Two components of female sex pheromone gland highly effective in field trapping tests (1990)
    Springer
    Journal of chemical ecology 16 (1990), S. 477-486 
    Details
    ISSN: 1573-1561
    Keywords: Lepidoptera ; Yponomeutidae ; Yponomeuta malinellus ; sex pheromone ; apple ermine moth ; (Z)-9-dodecen-1-ol acetate ; (Z)-11-tetradecen-1-ol
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract When electroantennographic responses of maleYponomeuta malinellus Zeller to model compounds were determined at dosages of 0.3–30 ng, the strongest responses were obtained from (Z)-9-dodecen-1-ol acetate (Z9–12∶Ac). Also, strong responses were obtained from (Z)-11-tetradecenal (Z11–14∶A1) and (Z)-11-tetradecen-1-ol (Zl1–14∶OH). At a dosage of 0.3 ng,Z11–14∶A1 produced a stronger response thanZ11–14∶OH, while at a dosage of 30 ng,Z11–14∶OH andZ11–14∶A1 produced equal responses. Gas chromatographic and mass spectral analysis of extracts of female sex pheromone glands showed the presence ofZ9–12∶Ac, tetradecan-1-ol (14∶OH), (E)-11-tetradecen-1-ol (E11–14∶OH),Z11–14∶OH, hexadecan-1-ol, and hexadecan-1-ol acetate in a ratio of 0.6∶200∶37∶100∶140∶35. In field tests,Z9–12∶Ac andZ11–14∶OH together were required for trap catch, and addition ofZ11–14∶A1,E11–14∶OH, 14∶OH, or (Z)-11-tetradecen-1-ol acetate did not increase catch. Ratios in rubber septa of 0.5∶99.5 to 1.5∶98.5 (Z9–12∶ Ac/Z11–14∶OH) captured the most males and captures were statistically equivalent for dosages of 10–1000 μg/rubber septum. Traps baited with the synthetic lure produced better catches than those baited with females.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01021779
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Roles of amino acids, protein, and fiber in leaf-feeding resistance of corn to the fall armyworm (1990)
    Springer
    Journal of chemical ecology 16 (1990), S. 1977-1995 
    Details
    ISSN: 1573-1561
    Keywords: Fall armyworm ; Spodoptera frugiperda ; Lepidoptera ; Noctuidae ; corn ; Zea mays ; plant-insect interaction ; amino acids ; herbivory ; feeding resistance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The free amino acids have been shown by isolational work and choice bioassays to be more important than all other factors evaluated in defining leaf-feeding resistance of corn (Zea mays L.) to fall armyworm (FAW) [(Spodoptera frugiperda J.E. Smith)] larvae. 6-MBOA (6-methoxybenzoxazolinone) and maysin, toxins present in corn, were shown not to be significant factors for leaf-feeding resistance to first-instar FAW larvae because of their low concentrations in the whorl. Amino acid analysis showed that while the ratios of the essential amino acids in susceptible (S) and resistant (R) lines were similar, there were differences in the nonessential amino acids, particularly aspartic acid, which was higher in R lines. Also, the ratio of essential amino acids to nonessential amino acids was important, being too low in expressed whorl leaf juice (obtained from V8–V10 growth stage plants) to support larval growth, although juice was stimulatory in choice tests. The total protein content of whorls in S lines was about 15% higher than in R lines, but the significance of this difference is uncertain, because nutritional tests showed that larval growth increased with total protein only up to 12% protein. Sugars were only slightly stimulatory. Thus, the amino acids along with higher hemicellulose content of R lines, established by us earlier, appear to explain much of the basis of resistance in corn to larval leaf-feeding of the FAW.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01020510
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  • 3
    Electronic Resource
    Electronic Resource
    Sex pheromone of hickory shuckwormCydia caryana Development of an effective field Lure (1990)
    Springer
    Journal of chemical ecology 16 (1990), S. 317-324 
    Details
    ISSN: 1573-1561
    Keywords: Sex pheromone ; sex attractant ; Cydia caryana ; Lepidoptera ; Tortricidae ; Olethreutinae ; (Z)-8-dodecen-1-ol acetate ; (E)-9-dodecen-1-ol acetate ; dodecanol acetate ; (E, E)-8 ; 10-dodecadien-1-ol acetate ; (E, Z)-8,10-dodecadien-1-ol acetate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Extracts of the sex pheromone glands of femaleCydia caryana were evaluated by electroantennography and gas chromatography-mass spectrometry. These studies suggested the following compounds were potential sex pheromone components: (Z)-8- and/or (E)-9-dodecenyl acetate (50 pg/female), dodecyl acetate (40 pg/female), and (E, E)-8,10-dodecadienyl acetate (25 pg/female). In field tests only the diene produced trap catch, and when the other components were added to the diene, trap catch was not increased. When the diene was formulated in red natural rubber septa, only transient and low catches were obtained, but when gray halobutyl isoprene elastomeric septa were used, high and consistent catches were obtained for eight weeks. Catches depended on the ratio of (E, E)-8,10 to (E, Z)-8,10 isomers. High catches were obtained for anEE toEZ ratio of 100 ∶ 0.6, and insignificant catches were obtained when the ratio was 100 ∶ 3. Equivalent catches were obtained for dosages of 50, 100, and 200 μg/septum.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01021767
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  • 4
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    Expression of T cell antigen receptor heterodimers in a lipid-linked form (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-08-10
    Description: The interaction of the T cell receptor for antigen (TCR) with its antigen-major histocompatibility complex ligand is difficult to study because both are cell surface multimers. The TCR consists of two chains (alpha and beta) that are complexed to the five or more nonpolymorphic CD3 polypeptides. A soluble form of the TCR was engineered by replacing the carboxyl termini of alpha and beta with signal sequences from lipid-linked proteins, making them susceptible to enzymatic cleavage. In this manner, TCR heterodimers can be expressed independently of the CD3 polypeptides and in significant quantities (0.5 milligram per week). This technique seems generalizable to biochemical and structural studies of many other cell surface molecules as well.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lin, A Y -- Devaux, B -- Green, A -- Sagerstrom, C -- Elliott, J F -- Davis, M M -- New York, N.Y. -- Science. 1990 Aug 10;249(4969):677-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Stanford University School of Medicine, CA 94305-5402.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1696397" target="_blank"〉PubMed〈/a〉
    Keywords: Alkaline Phosphatase/genetics ; Amino Acid Sequence ; Animals ; Antigens, CD3 ; Antigens, CD55 ; Antigens, Differentiation, T-Lymphocyte/genetics ; Cell Line ; Complement Inactivator Proteins/genetics ; Female ; Humans ; Macromolecular Substances ; Membrane Proteins/genetics ; Molecular Sequence Data ; Placenta/enzymology ; Pregnancy ; Protein Sorting Signals/genetics ; Receptors, Antigen, T-Cell/*genetics ; Transfection
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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    PAPER CURRENT
  • 5
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    Translation initiation and ribosomal biogenesis: involvement of a putative rRNA helicase and RPL46 (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-03-02
    Description: Cold-sensitive mutations in the SPB genes (spb1-spb7) of Saccharomyces cerevisiae suppress the inhibition of translation initiation resulting from deletion of the poly(A)-binding protein gene (PAB1). The SPB4 protein belongs to a family of adenosine triphosphate (ATP)-dependent RNA helicases. The aberrant production of 25S ribosomal RNA (rRNA) occurring in spb4-1 mutants or the deletion of SPB2 (RPL46) permits the deletion of PAB1. These data suggest that mutations affecting different steps of 60S subunit formation can allow PAB-independent translation, and they indicate that further characterization of the spb mutations could lend insight into the biogenesis of the ribosome.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sachs, A B -- Davis, R W -- R37 GM 21891/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1990 Mar 2;247(4946):1077-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, Stanford Medical Center, CA 94305.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2408148" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; Carrier Proteins/genetics/metabolism ; DEAD-box RNA Helicases ; Molecular Sequence Data ; Mutation ; Poly(A)-Binding Proteins ; *Protein Biosynthesis ; RNA Nucleotidyltransferases/genetics/*metabolism ; RNA Processing, Post-Transcriptional ; RNA, Fungal/genetics/metabolism ; RNA, Ribosomal/genetics/*metabolism ; Ribosomal Proteins/genetics/*metabolism ; Ribosomes/*metabolism ; Saccharomyces cerevisiae/enzymology/*genetics ; *Saccharomyces cerevisiae Proteins ; Sequence Homology, Nucleic Acid
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 6
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    A receptor for tumor necrosis factor defines an unusual family of cellular and viral proteins (1990)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1990-05-25
    Description: Tumor necrosis factor alpha and beta (TNF-alpha and TNF-beta) bind surface receptors on a variety of cell types to mediate a wide range of immunological responses, inflammatory reactions, and anti-tumor effects. A cDNA clone encoding an integral membrane protein of 461 amino acids was isolated from a human lung fibroblast library by direct expression screening with radiolabeled TNF-alpha. The encoded receptor was also able to bind TNF-beta. The predicted cysteine-rich extracellular domain has extensive sequence similarity with five proteins, including nerve growth factor receptor and a transcriptionally active open reading frame from Shope fibroma virus, and thus defines a family of receptors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Smith, C A -- Davis, T -- Anderson, D -- Solam, L -- Beckmann, M P -- Jerzy, R -- Dower, S K -- Cosman, D -- Goodwin, R G -- New York, N.Y. -- Science. 1990 May 25;248(4958):1019-23.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Immunex Corporation, Seattle, WA 98101.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2160731" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Blotting, Northern ; Cloning, Molecular ; DNA/genetics ; Humans ; Membrane Proteins/genetics ; Molecular Sequence Data ; Multigene Family ; Receptors, Cell Surface/*genetics ; Receptors, Tumor Necrosis Factor ; Tumor Necrosis Factor-alpha/*physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 7
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    Long-wave morphological instabilities in the directional solidification of a dilute binary mixture (1990)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: Long-wave instabilities in a directionally-solidified binary mixture may occur in several limits. Sivashinsky (1983) identified a small-segregation-coefficient limit and obtained a weakly nonlinear evolution equation governing subcritical two-dimensional bifurcation. Brattkus and Davis (1988) identified a near-absolute-stability limit and obtained a strongly nonlinear evolution equation governing supercritical two-dimensional bifurcation. The present investigation identifies a third strongly nonlinear evolution equation, arising in the small-segregation-coefficient, large-surface-energy limit. This equation links both of the former and describes the change from the sub- to super-critical bifurcations. This study sets the previous long-wave analyses into a logical framework.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: SIAM Journal on Applied Mathematics (ISSN 0036-1399); 50; 420-436
    Format: text
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  • 8
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    Hydrodynamic interactions in directional solidification (1990)
    In:  Other Sources
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    Publication Date: 2011-08-19
    Description: A binary liquid undergoes unidirectional solidification. The one-dimensional steady state is susceptible to morphological instability that causes the solid/liquid interface to change from a planar state to a cellular pattern. This paper examines the effects on this transition of volume-change convection, buoyancy-driven convection or forced flows. It emphasizes how flows alter stability limits, create scale and pattern changes in morphology, and create, through coupling, new instabilities. Emphasis is placed on the physical mechanisms of the interactions.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: Journal of Fluid Mechanics (ISSN 0022-1120); 212; 241-262
    Format: text
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  • 9
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    Long-wave interactions in morphological and convective instabilities (1990)
    In:  Other Sources
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    Publication Date: 2011-08-19
    Description: A binary liquid that undergoes directional solidification is susceptible to morphological and solutal-convective instabilities that cause the solid/liquid interface to change from a planar to a cellular state. This paper gives derivations for those long-wave evolution equations that describe the weak couplings between convection and interface morphology and gives some analytical results obtainable from these.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: IMA Journal of Applied Mathematics (ISSN 0272-4960); 45; 3, 19; 267-285
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  • 10
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    Experimental investigation of turbulent flow through a circular-to-rectangular transition duct (1990)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: An incompressible, turbulent, swirl-free flow through a circular-to-rectangular transition duct was studied experimentally. The cross-sectional geometry all along the duct was defined using the equation of a superellipse. The three mean velocity components and the six Reynolds stress components were measured at two axial stations downstream from the transition. It is shown that a secondary flow vortex pair which develops along the duct sidewalls significantly distorts the mean and turbulence fields. At the duct exit, the flow is not in local equilibrium, but recovers to local equilibrium conditions in the rectangular extension duct. Analysis demonstrates that conventional wall functions are not applicable at all streamwise locations in the duct.
    Keywords: FLUID MECHANICS AND HEAT TRANSFER
    Type: AIAA PAPER 90-1505
    Format: text
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