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  • 11
    Electronic Resource
    Electronic Resource
    A Model for Lamellar-Rod Eutectic Transition (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 561-565 (Oct. 2007), p. 1003-1006 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Critical experiments in Al-Cu hypo-eutectic alloys have been carried out in capillary samples inorder to establish the lamellar/rod eutectic transition condition. It is shown that this transition occursover a range of compositions. Physics of the diffuse nature of this transition is proposed and thedynamics of the transition is shown to give a specific geometric relationship between the lamellarand rod spacing at the transition. A model of lamellar/rod eutectic transition is established thatincorporates the dynamic nature of this transition and the anisotropy in interfacial energies
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/17/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.561-565.1003.pdf
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  • 12
    Electronic Resource
    Electronic Resource
    Weldability Studies on the Replacement Repair Welded Joints of a Damaged Steel Bridge (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 580-582 (June 2008), p. 655-658 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: In recent years, the replacement repair welding, through which damaged bridges arerepaired by replacing of the damaged sections with new steel plates through cutting and weldingunder in-service conditions, has been highlighted for its brilliant features i.e. it can be achievedwithout incurring traffic dislocation. However, the validity of the repair method is not fully verifiedbecause of its lack of safety and reliability. Moreover, repair method by welding inevitably involvescutting and welding process, and the weldability of the replacement repair welded joints has not yetbeen clarified. In this paper, the weldability of the replacement-repair-welded joints wasinvestigated in order to improve reliability in the repair welded joints of the aged steel bridge. ASteel plate was extracted from the steel bridge after the period of prolonged service, and waswelded with a new plate, using replacement repair welding technique, in order to construct aspecimen. Flux Cored Arc Welding (FCAW) process was used to fabricate the double "V" buttjoints. Welded joints were characterized on the basis of chemical composition analysis, hardnesstest and micro-structural analysis
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/19/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.580-582.655.pdf
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  • 13
    Electronic Resource
    Electronic Resource
    In–Situ Synthesis of Co〈sub〉p〈/sub〉/Cu Coating by Laser Cladding (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 544-545 (May 2007), p. 387-390 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Homogeneous Cop/Cu coating alloys were fabricated by laser cladding rapid solidificationtechnique and their microstructures were investigated, with the emphasis on the influence ofprocessing on microstructure. The experimental results showed that a Cop/Cu composite coating canbe successfully in situ synthesized when the processing conditions were controlled. The as-solidifiedmicrostructures were characterized by a homogeneous distribution of small spherical Co-richparticles dispersed in the Cu-rich matrix. The Cop/Cu coating was consisted of γ-Co, Cu-rich solutionand et al. With the increasing of line energy, the spherical particles diameter in coating wasincreasing. The structural evolution and refining mechanism of the Cop/Cu coating were alsodiscussed
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/15/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.544-545.387.pdf
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  • 14
    Electronic Resource
    Electronic Resource
    Formation of Boride Eutectic with Addition of Boron in Mod. 12Cr-1Mo Steels (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 544-545 (May 2007), p. 331-334 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The behavior of boride formation has been examined with solidification rates and boroncontents by observing the solid/liquid interface using directional solidification in Mod. 12Cr-1Moalloys. The phase transformation temperatures of liquidus, solidus, eutectic formation, and finalsolidification were analyzed by DTA. In order to analyze the crystallographic structure of the boride,extractive method, extracting the boride from the matrix, was used. The boride was proved as M3B2,and this boride phase expected to be formed by eutectic reaction. It has been also found that the borideformation depends on contents of born as well as the other alloying elements, such as C and W. Asincreasing boron contents, the amount of boride eutectic increased. Also, the alloying element W wasshown to enhance the formation of the boride
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/15/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.544-545.331.pdf
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  • 15
    Electronic Resource
    Electronic Resource
    Effect of Sintering Temperature on Structure, Piezoelectric and Ferroelectric Properties of (Na〈sub〉0.5〈/sub〉Bi〈sub〉0.5〈/sub〉)〈sub〉0.90〈/sub〉Ba〈sub〉0.10〈/sub〉TiO〈sub〉3〈/sub〉 Ceramic (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 317-318 (Aug. 2006), p. 853-856 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Structures, ferroelectric and piezoelectric properties of (Na0.5Bi0.5)0.90Ba0.10TiO3 ceramicsintered at different temperatures were investigated. The results confirm an important role ofsintering temperature on the structure and electrical properties of the ceramic. It was found that theincrease of sintering temperature in the range of 1110-1160 [removed info] promoted the development ofcrystal structure and microstructural densification, leading to an improvement in ferroelectricproperties, poling process and piezoelectric properties. Further increase of the sintering temperatureabove 1160 [removed info] resulted in a slight deformation of ceramic specimens. With respect to sinteringbehavior and piezoelectric properties, a relatively narrow sintering temperature range near 1150 [removed info]was ascertained to be preferred for the ceramic
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/51/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.317-318.853.pdf
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  • 16
    Electronic Resource
    Electronic Resource
    The Change of Mechanical Properties for Anodic Aluminum Oxide by Heat Treatment (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 317-318 (Aug. 2006), p. 323-326 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Anodic aluminum oxide (AAO) was prepared in three types of aqueous solutions withvarious applied voltage. The mechanical property of AAO prepared in different electrolyte wasinvestigated and hardness was increased on account of the increase of the thickness between pores.The mechanical property and microstructure change of AAO prepared in oxalic acid at 40V wasinvestigated by heat treatment. AAO prepared in oxalic acid at 40V was transformed from amorphousto crystalline phase by heat treatment above 800oC and hardness was increased about 2.6 times withincrease of heat treatment temperature
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/51/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.317-318.323.pdf
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  • 17
    Electronic Resource
    Electronic Resource
    Quenching Mechanisms and Kinetics of α-Tocopherol and β-Carotene on the Photosensitizing Effect of Synthetic Food Colorant FD&C Red No. 3 (2002)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 67 (2002), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: : Effects of FD&C Red No. 40, Red No. 3, Yellow No. 5, Yellow No. 6, Green No. 3, Blue No. 1 and Blue No. 2 on 0.03M soybean oil oxidation in acetone at 25 °C under light were studied by measuring headspace oxygen depletion. As Red No. 3 increased from 0 to 5, 20, 100 and 200 ppm, the headspace oxygen was reduced by 2 to 70, 73, 77 and 77%, respectively, for 4 h. Only Red No. 3 acted as a photosensitizer to produce singlet oxygen in the oil. The quenching rates of α-tocopherol and β-carotene for the singlet oxygen by Red No.3 were 4.1 × 107 M−1s−1 and 7.3 × 109 M−1s−1, respectively. When β-carotene was below 1.86 × 10−6 M, β-carotene quenched singlet oxygen, but it quenched both singlet oxygen and Red No. 3 at or above 3.72 × 10−6 M. However, α-tocopherol quenched singlet oxygen only.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.2002.tb10627.x
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  • 18
    Electronic Resource
    Electronic Resource
    Solid Phase Microextraction of Volatile Soybean Oil and Corn Oil Compounds (2002)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 67 (2002), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: : The qualitative and quantitative determination of volatile compounds in soybean and corn oils were analyzed by solid phase microextraction. Coefficients of variation and sensitivity of polydimethylsiloxane, carboxen/polydimethylsiloxane, polyacrylate, and carbowax/divinylbenzene for hexanal analysis in soybean oil were 3.2, 4.2, 7.2, and 10.7%, and 15, 30,20, and 10 ppb, respectively. Volatile compounds of soybean oil with peroxide value (PV) of 1 or 5 were extracted by polydimethylsiloxane at 60 °C for 60 min. The amount of volatile compounds of PV 5 soybean oil was 92% higher than the PV 1. Volatile compounds including 2,4-decadienal, 2-decenal, hexanal, and pentane were identified in soybean and corn oils by SPME-GC-MS and GC retention time. SPME was a simple, reproducible and sensitive method for the analysis of volatile compounds of vegetable oils. Keywords: solid phase microextraction, headspace volatile compounds, soybean oil, corn oil
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.2002.tb11361.x
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  • 19
    Electronic Resource
    Electronic Resource
    Thermal Stability and Isomerization of Lycopene in Tomato Oleoresins from Different Varieties (2004)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 69 (2004), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: : Lycopene, a tomato carotenoid, has been associated with the inhibition of certain chronic diseases including prostate cancer. Tomato oleoresin is a lipid-rich material resulting from successive solvent extraction of the tomato fruit. Thermal stability and isomerization of lycopene in oleoresins prepared from 3 different tomato varieties, Roma, High Lycopene, and Tangerine, and tomato peel waste, were studied at 25 °C, 50 °C, 75 °C, and 100 °C in the dark. Thermally degraded lycopene compounds and isomers of lycopene were analyzed by a combination of C30 reversed-phase high-performance liquid chromatograph with a photodiode array detector, UV-visible spectrometer, or mass spectrometer. Effects of antioxidants on lycopene were also studied at 50 °C. As the storage temperature increased from 25 °C to 100 °C, the degradation of total lycopene in oleoresin from all samples increased significantly (P 〈0.05). Lycopene at 25 °C and 50 °C may degrade mainly through oxidation without isomerization. Isomerization of lycopene in tomato oleoresins increased at 75 °C and 100 °C. Tetra-cis lycopene in Tangerine tomato varieties followed different degradation and isomerization pathways compared with all-trans lycopene in other tomato varieties. Addition of α-tocopherol or butylated hydroxytoluene slowed the rate of degradation of lycopene in oleoresin.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.2004.tb13647.x
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  • 20
    Electronic Resource
    Electronic Resource
    A SURVEY OF ARYLAMINE N-ACETYLTRANSFERASE ACTIVITY IN COMMON FRUITS AND VEGETABLES (1996)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food biochemistry 20 (1996), S. 0 
    Details
    ISSN: 1745-4514
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: The N-acetyltransferase activity was determined in 58 common fruits and vegetables. The assay was based on acetylation of 2-aminofluorene or p-amino-benzoic acid, followed by high pressure liquid chromatographic analysis of products and remaining nonacetylated substrate. The highest specific activities were observed in Balsam pear which contained 17.37 ± 1.45 N-acetyl aminofluorene nmole/min/mg protein and 46.27 ± 6.87 N-acetyl p-aminobenzoic acid nmole/min/mg protein. N-acetyltransferase activities within the remaining 57 foodstuffs analyzed ranged from none detected to 3.39 ± 0.72 N-acetyl aminofluorene nmole/min/mg protein and none detected to 32.45 ± 6.55 N-acetyl p-aminobenzoic acid nmole/min/mg protein. This is the first demonstration of acetyl CoA: arylamine N-acetyltransferase activity in common foodstuffs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-4514.1996.tb00571.x
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