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  • 1
    Electronic Resource
    Electronic Resource
    Components of female sex pheromone of cocoa pod borer moth,Conopomorpha cramerella (1986)
    Springer
    Journal of chemical ecology 12 (1986), S. 1-23 
    Details
    ISSN: 1573-1561
    Keywords: Cocoa pod borer ; Conopomorpha cramerella ; Acrocercops cramerella ; Lepidoptera ; Gracillariidae ; sex pheromone ; sex attractant ; 4,6,10-hexadecatrienyl acetate ; 4,6,10-hexadecatrien-1-ol
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The cocoa pod borer,Conopomorpha cramerella (Snellen) (Lepidoptera: Gracillariidae), is the most serious pest of cocoa in Southeast Asia. Analyses of ovipositor washings and entrained volatiles from virgin female moths by gas chromatography (GC) linked to electroantennography (EAG), and comparison of EAG responses from the male moth to synthetic compounds indicated the presence of theE,Z,Z andE,E,Z isomers of 4,6,10-hexadecatrienyl acetate and the corresponding alcohols, and of hexadecyl alcohol. Amounts of pheromone produced were less than 0.1 ng/female, and no peaks for the unsaturated components were observed on GC analysis. Extensive field testing of synthetic mixtures in Sabah, East Malaysia, showed that traps baited with a polyethylene vial impregnated with 1.2 mg of a mixture of the above five components in 40∶60∶4∶6∶10 ratio caught more maleC. cramerella moths than traps baited with a virgin female moth.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01045587
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  • 2
    Electronic Resource
    Electronic Resource
    Components of the sex pheromone of the female spotted stalk borer,Chilo partellus (Swinhoe) (Lepidoptera: Pyralidae): Identification and preliminary field trials (1979)
    Springer
    Journal of chemical ecology 5 (1979), S. 153-163 
    Details
    ISSN: 1573-1561
    Keywords: Sex pheromone ; sex attractant ; Lepidoptera ; Pyralidae ; Chilo partellus ; spotted stalk borer ; electroantennography ; (Z)-11-hexadecenal ; (Z)-11-hexadecen-1-ol ; (Z)-9-tetradecenyl formate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract FemaleChilo partellus (Swinhoe) abdominal tip extracts were examined by gas-liquid chromatography (GLC) combined with simultaneous electroantennographic (EAG) recording from the male moth. Two olfactory stimulants were detected and identified as (Z)-11-hexadecenal (I) and (Z)-11-hexadecen-1-ol (II) by their GLC behavior, microchemical reactions, and comparison with synthetic materials. Both compounds were detected in volatiles emitted by the “calling” female moth. Synthetic (Z)-9-tetradecenyl formate, a structural analog of aldehyde (I), also elicited a significant EAG response from the male moth. Field trials carried out in India using synthetic (I) and (II) as bait in water traps showed that compound (I) was highly attractive to maleC. partellus; compound (II) was not attractive, and its addition to (I) significantly reduced trap catches.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00987696
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  • 3
    Electronic Resource
    Electronic Resource
    The female sex pheromone of sugarcane stalk borer,Chilo auricilius identification of four components and field tests (1986)
    Springer
    Journal of chemical ecology 12 (1986), S. 1377-1388 
    Details
    ISSN: 1573-1561
    Keywords: Sugarcane stalk borer ; Chilo auricilius ; Lepidoptera ; Pyralidae ; sex pheromone ; sex attractant ; (Z)-7-dodecenyl acetate ; (Z)-8-tridecenyl acetate ; (Z)-9-tetradecenyl acetate ; (Z)-10-pentadecenyl acetate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Four pheromonal components have been detected in ovipositor washings and volatiles from female sugarcane stalk borers,Chilo auricilius Dudgeon (Lepidoptera: Pyralidae), using combined gas chromatography-electroantennography. The components have been identified as (I) (Z)-7-do-decenyl acetate, (II) (Z)-8-tridecenyl acetate, (III) (Z)-9-tetradecenyl acetate, and (IV) (Z)-10-pentadecenyl acetate by comparison of their gas chromatographic behavior with that of synthetic standards. In field tests carried out in northern India during 1982–1984, a combination of II, III, and IV in their naturally occurring ratio (8∶4∶1) was shown to provide a highly attractive synthetic source for trap use. (Z)-7-Dodecenyl acetate was found to reduce catches of maleC. auricilius, both when dispensed with the other three components and when released from dispensers surrounding a trap baited with the other three components.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01012357
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  • 4
    Electronic Resource
    Electronic Resource
    Components of the sex pheromone of the female sugar cane borer,Chilo sacchariphagus (Bojer) (Lepidoptera: Pyralidae) (1980)
    Springer
    Journal of chemical ecology 6 (1980), S. 385-394 
    Details
    ISSN: 1573-1561
    Keywords: Sex pheromone ; sex attractant ; Chilo sacchariphagus ; sugar cane borer ; electroantennography ; (Z)-13-octadecenyl acetate ; (Z)-13-octadecen-1-ol
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The female sex pheromone of the sugar cane borer,Chilo sacchariphagus, has been shown to contain the two structurally related compounds, (Z)-13-octadecenyl acetate (I) and (Z)-13-octadecen-1-ol (II). These components were detected in female abdominal tip extracts by gas-liquid chromatography (GLC) combined with electroantennography (EAG), and were identified by their GLC behavior, microozonolysis, and interconversion, and by comparison of natural and synthetic material. Field tests in Mauritius showed that traps baited with components I and II combined in ratios from 1∶1 to 9∶1 caught maleC. sacchariphagus moths, and that the 7∶1 ratio was comparable in performance with a virgin female moth. Neither component presented separately in traps caught significant numbers of moths.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01402916
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  • 5
    Electronic Resource
    Electronic Resource
    Points to be considered in thermogravimetry (1993)
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 44 (1993), S. 345-350 
    Details
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Bei der Thermogravimetrie zu berücksichtigende HinweiseKontinuierliche Thermogravimetrie ist eine verbreitete Methode, um Werkstoffe in korrosiven Gasen bei hohen Temperaturen zu prüfen und um Kinetik und Mechanismen der Hochtemperaturkorrosion aufzuklären. Hier werden Empfehlungen zur Durchführung thermogravimetrischer Tests zusammengestellt, Hinweise gegeben betreffend Probengröße und -form, Oberflächenpräparation, Reaktionsrohr, Start des Experiments, besonders empfindliche Messungen und Gasströmung und -regelung. Die Veröffentlichung ist als Grundlage und Startpunkt für zu entwickelnde Richtlinien für die Hochtemperaturkorrosionsforschung gedacht.
    Notes: Continuous thermogravimetry is a common method to test materials in gaseous corrosive environments at high temperatures and to elucidate kinetics and mechanisms of high temperature corrosion. Recommendations how to conduct thermogravimetric tests are collected here, points to be considered including sample size and form, surface preparation, reaction chamber, starting procedure, sensitive measurements, gas supply and dosing. This study is meant as a starting foundation for establishing guidelines in high temperature corrosion research.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/maco.19930440805
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  • 6
    Electronic Resource
    Electronic Resource
    Identification and quantification of Cu contamination on GaAs surfacesPaper presented at QSA 7, Guildford, September 1992. (1994)
    Chichester [u.a.] : Wiley-Blackwell
    Surface and Interface Analysis 21 (1994), S. 51-55 
    Details
    ISSN: 0142-2421
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: Secondary ion mass spectrometry has been used to identify the presence of Cu contamination on undoped semiinsulating GaAs wafer surfaces following polishing under certain conditions. The presence of a contaminating species on the wafer surface is indicated by the influence of pre-etch treatments on electrical measurements performed on heat-treated wafers, with and without Si implants. The identification of Cu as a contaminant is confirmed by photoluminescence measurements. With the appropriate wafer preparation process, the level of Cu contamination is below the SIMS detection limit of 〈1 × 1016 atoms cm-3.In the SIMS analysis of the surface-contaminated wafers, the Cu depth profile shape was dependent on the primary beam bombardment energy, suggesting a chemical segregation of Cu out of the altered layer, a redistribution that is known to occur in Si.To quantify the surface concentration of Cu, GaAs wafers were deliberately contaminated with Cu, heat treated and analysed with glow discharge mass spectrometry and SIMS to provide a cross-calibration.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/sia.740210108
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  • 7
    Electronic Resource
    Electronic Resource
    Mass spectra of 2,2′-bridged biphenyls with 12-membered heterocyclic bridging rings: 1 - Some tetrahydrotetrabenzo[b,d,h,j] [1,6]diazacyclododecines and their precursors, 2,2′-diaminobiphenyls (1980)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 15 (1980), S. 526-532 
    Details
    ISSN: 0030-493X
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Mass spectra of four tetrahydrotetrabenzo[b,d,h,j] [1,6]diazacyclododecines are reported. Loss of phenan-threne gives 2,2′-diaminobiphenyl or the appropriate substituted diamine as the base peak in three cases. Substituents ortho to the biphenyl link substantially modify the fragmentation pattern. Mass spectra of the four 2,2′-diaminobiphenyls have been determined for comparison.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/oms.1210151008
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  • 8
    Electronic Resource
    Electronic Resource
    Mass spectra of 2,2′-bridged biphenyls with 12-membered heterocyclic bridging rings: 2 - some tetrabenzo[b, d, h, j][1, 6]diazacyclododecines (1981)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 16 (1981), S. 123-124 
    Details
    ISSN: 0030-493X
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Mass spectra of four tetrabenzo[b, d, h, j][1, 6]diazacyclododecines are reported. The common pattern of fragmentation is altered by the presence of ortho methoxycarbonyl groups.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/oms.1210160305
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  • 9
    Electronic Resource
    Electronic Resource
    Zur Kenntnis des Systems Be3N-Si3N4. V. A Refinement of the Crystal Structure of β-Beryllium Nitride (1969)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 369 (1969), S. 108-112 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Eine erneute Bestimmung der Struktur von β-Be3N2 zeigt, daß alle Berylliumatome tetraedrische Koordination in einer HCHCHC… Folge von Schichten mit dichtest gepackten Sticktoffatomen haben. Zwei der Beryllium-Atomen sind vollständig besetzt, während ein drittes Berylliumatom zwischen zwei Lagen fehlgeordnet ist, die sich gegenseitig ausschließen.
    Notes: A re-examination of the structure of β-Be3N2 has shown that all the beryllium atoms have a tetrahedral coordination in a HCHCHC… layer sequence of close-packed nitrogen atoms. Two of the beryllium atom sites are fully occupied while the third beryllium is disordered between two mutually exclusive tetrahedral sites.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19693690115
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  • 10
    Electronic Resource
    Electronic Resource
    Quantitative depth profiling by glow discharge mass spectrometryPaper presented at the Quantitative Surface Analysis (QSA-4) Conference, Teddington, UK, November 1986. (1988)
    Chichester [u.a.] : Wiley-Blackwell
    Surface and Interface Analysis 11 (1988), S. 40-44 
    Details
    ISSN: 0142-2421
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: The ability of the VG 9000 glow discharge mass spectrometer to perform highly quantitative materials analysis has led to applications of the instrument in the field of depth profiling. The result has been the emergence of a technique that is capable of performing rapid quantitative depth analysis for a wide range of elements to sub ppm detection limits. Preliminary investigations into depth resolution suggest the capability of resolving nanometre scale structures.Quantitation is achieved by direct ratioing of ion beams to that of the matrix: elemental sensitivity factors, determined from standards, vary by less than an order of magnitude across the periodic table, and are relatively matrix independent, so that high accuracy results may be attained without the need for closely matching standards and matrix. A high resolution double-focusing mass spectrometer affords clear separation of atomic peaks from the majority of the inevitable low level molecular species in the mass spectrum, which would otherwise limit the accuracy of trace element determinations.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/sia.740110105
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