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  • 1
    Electronic Resource
    Electronic Resource
    Comparative genome mapping of Sorghum bicolor (L.) Moench using an RFLP map constructed in a population of recombinant inbred lines (1999)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 118 (1999), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: A restriction fragment length polymorphism (RFLP) linkage map of Sorghum bicolor (L.) Moench was constructed in a population of 137 F6-8 recombinant inbred lines using sorghum, maize, oat, barley and rice DNA clones. The map consists of 10 linkage groups (LGs) and 323 markers, 247 of which (76.5%) were ordered at a LOD score ≥ 3.0. The LGs comprise from 61 (LG A) to 13 markers (J), which range in length from 205 (A) to 55 cM (J) and have a combined total length of 1347 cM. Highly significant distorted segregation was detected at all of the 38 loci in a 103-cM segment of LG A, the allelic ratios in the segment ranging from approximately 3:1 (one end) to 19:1 (middle) to 2:1 (other end). Duplicated loci located in different LGs have been mapped with 55 of the 295 DNA probes used in the study (18.6%). The distribution of these loci does not provide support for the hypothesis that Sorghum bicolor (L.) Moench is of tetraploid origin. Comparison of the map with RFLP maps of maize, rice, and oat produced evidence for sorghum-maize LG rearrangements and homoeologies not reported previously, including evidence that: (1) a segment of maize 5L and a segment of 5S may be homoeologous to sorghum LGA; (2) maize LGs 4 and 6 are partly homoeologous to sorghum LGE; (3) the short arm of maize LG 2 is partly homoeologous to sorghum LGF; (4) maize LG 4 may be partly homoeologous to sorghum LG G; (5) maize LG 5 and sorghum LG G contain a larger amount of homoeologous genetic material than previously indicated; and (6) a short segment of maize LG 1 may be homoeologous to a short segment of sorghum LG I.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1439-0523.1999.118003225.x
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  • 2
    Electronic Resource
    Electronic Resource
    Effects of stress on the growth of TiSi2 thin films on (001)Si (1999)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 74 (1999), S. 1406-1408 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Tensile stress induced by backside CoSi2 films on a silicon substrate has been found to enhance the growth of C54–TiSi2 on (001)Si. In contrast, compressive stress induced by backside oxide films on the silicon substrate was found to retard significantly the growth of C54–TiSi2 on (001)Si. For Ti on stressed (001)Si after rapid thermal annealing at 800 °C for 30 s, the thickness of the C54– TiSi2 films was found to increase and decrease with the tensile and compressive stress levels, respectively. The retarded growth is attributed to the hindrance of the migration of Si through the Ti/Si interface by the compressive stress. On the other hand, the presence of tensile stress promotes the Si diffusion to facilitate the formation of Ti silicide thin films. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.123565
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  • 3
    Electronic Resource
    Electronic Resource
    A new hydroxylase system in Actinomadura sp cells converting compactin to pravastatin (1998)
    Springer
    Journal of industrial microbiology and biotechnology 20 (1998), S. 373-375 
    Details
    ISSN: 1476-5535
    Keywords: Keywords: Actinomadura; compactin; hydroxylase; microbial transformation; pravastatin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The hydroxylase in cell-free extracts of Actinomadura sp strain 2966 converts compactin to pravastatin. It requires NADPH as coenzyme and Mg2+ as cofactor; Mn2+ can partially replace Mg2+. In contrast with the inducible cytochrome P-450 system of Streptomyces carbophilus which catalyzes the same overall reaction, this constitutive hydroxylase is stimulated by ATP and ascorbic acid and is not inactivated by CO.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/sj.jim.2900539
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  • 4
    Electronic Resource
    Electronic Resource
    Effect of allylic halides on catiomic polymerization of 1,3-pentadiene (1996)
    Springer
    Polymer bulletin 36 (1996), S. 443-447 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary The cationic polymerization of 1,3-pentadiene (PD) initiated by AlCl3 in n-hexane was carried out in the presence of allylic halides, i.e., 3-chloro-1-butene, allyl chloride, and allyl bromide. All these allylic halides strongly hindered crosslinking which is a major side reaction during PD cationic polymerization. Cyclization, another side reaction, was also reduced by the addition of the allylic halides. The influences of these halides on polymer yields and molecular weights are also discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00315061
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  • 5
    Electronic Resource
    Electronic Resource
    Cationic polymerization of 1,3-pentadiene in the presence of arenes (1995)
    Springer
    Polymer bulletin 35 (1995), S. 393-397 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary The cationic polymerization of 1, 3-pentadiene initiated by AlCl3 in n-hexane at 30°C have been carried out in the presence of various arenes, i.e., benzene, toluene, p-xylene, o-xylene, m-xylene and mesitylene. The presence of all these arenes have reduced to different extents the formation of crosslinked products. Namely, the crosslinking reaction, a major side-reaction during the cationic polymerization of 1, 3-pentadiene, has been suppressed by adding the aromatic compounds. The results showed that a chain transfer to arene takes place and this transfer process hinders the generation of the crosslinked polymer. IR and 1H NMR evidences have confirmed the existence of the corresponding aryl groups in the resulting polymers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00297603
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  • 6
    Electronic Resource
    Electronic Resource
    Cationic polymerization of 1,3-pentadiene with (CH3)3SiCl/AlCl3 (1996)
    Springer
    Polymer bulletin 37 (1996), S. 149-153 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary Cationic polymerizations of 1,3-pentadiene (PD) with AlCl3 in n-hexane was carried out in the absence and presence of trimethylsilyl chloride (TMSCl). The polymer yield is greatly increased by the addition of TMSCl, indicating that the TMSCl/AlCl3 combination is an efficient initiating system for PD cationic polymerization. The polymerization rate induced by TMSCl/AlCl3 is 10 times greater than that by AlCl3 alone. The introduction of TMSCl does not exert an effect on the crosslinking reaction. The molecular weight of the polymer decreases with the addition of TMSCl to a extent and then remains constant. Structural evidences demonstrate that the polymerization is indeed initiated by AlCl3 in combination with HCl resulting from hydrolysis of TMSCl by adventitious water.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00294115
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  • 7
    Electronic Resource
    Electronic Resource
    (CH3)3SiBr/AlCl3 induced cationic polymerization of 1,3-pentadiene (1998)
    Springer
    Polymer bulletin 40 (1998), S. 21-26 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract. Cationic polymerizations of 1,3-pentadiene (PD) with AlCl3 in n-hexane were carried out in the absence and presence of trimethylsilyl bromide (Me3SiBr or TMSBr). Structural evidence and proton trap experiment demonstrate that in the TMSBr/AlCl3 induced polymerization the real initiating system is the combination of AlCl3 with HBr resulting from hydrolysis of TMSBr by adventitious water existing in the system. The conversion of the polymerization is greatly increased by adding TMSBr, but the introduction of TMSBr does not exert an effect on the formation of gel (crosslinked product). The molecular weight of the polymer prepared by TMSBr/AlCl3 system shows a maximum in the range of [TMSBr]/[AlCl3] = 1, and excessive TMSBr gives rise to a drop of the polymer molecular weight. Kinetic data show that AlCl3 and TMSBr/AlCl3 induced polymerizations have the comparable polymerization rates.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002890050218
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  • 8
    Electronic Resource
    Electronic Resource
    A chemically-defined medium supporting growth and providing cells converting compactin to pravastatin (1999)
    Springer
    Journal of industrial microbiology and biotechnology 22 (1999), S. 78-79 
    Details
    ISSN: 1476-5535
    Keywords: Keywords: Actinomadura; pravastatin; compactin; nutrition; vitamins
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Actinomadura sp strain 2966, which converts compactin to pravastatin, requires vitamins to support its growth. Addition of folic acid, thiamine and cyanocobalamine allowed growth in chemically-defined medium. Cells grown in a chemically-defined medium were as capable of converting compactin to pravastatin as cells grown in a complex medium.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/sj.jim.2900602
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  • 9
    Electronic Resource
    Electronic Resource
    Computation of backward-facing step flows by a second-order Reynolds stress closure model (1995)
    Chichester : Wiley-Blackwell
    International Journal for Numerical Methods in Fluids 21 (1995), S. 223-235 
    Details
    ISSN: 0271-2091
    Keywords: turbulence model ; Reynolds stress model ; two-layer approach ; backward step flow ; Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: This paper scrutinizes the predictive ability of the differential stress equation model in complex shear flows. Two backward-facing step flows with different expansion ratios are solved by the LRR turbulence model with an anisotropic dissipation model and the near-wall regions of the separated side resolved by a near-wall model. The computer code developed for solving the transport equations is based on the finite-volume-finite-difference method. In the numerical solution of the time-averaged momenum equations the Reynolds stresses are treated partially as a diffusion term and partially as a source term to avoid numerical instability. Computational results are compared with experimental data. It is found that the near-wall region of the separated side resolved by the near-wall model, the LRR model with a simple modification of an anisotropic dissipation model can predict backward step flows well.
    Additional Material: 13 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/fld.1650210304
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  • 10
    Electronic Resource
    Electronic Resource
    Effect of benzylic halides on cationic polymerization of 1,3-pentadiene (1996)
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part A: Polymer Chemistry 34 (1996), S. 1815-1818 
    Details
    ISSN: 0887-624X
    Keywords: 1,3-pentadiene ; cationic polymerization ; crosslinking ; chain transfer ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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