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  • 1
    Electronic Resource
    Electronic Resource
    Fluorescent probe study of temperature-induced conformational changes in cytochrome oxidase in lecithin vesicle and solubilized systems (1980)
    s.l. : American Chemical Society
    Biochemistry 19 (1980), S. 1598-1603 
    Details
    ISSN: 1520-4995
    Source: ACS Legacy Archives
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/bi00549a011
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  • 2
    Electronic Resource
    Electronic Resource
    Shrinkage Behavior of Knoop Indentations in Silica and Soda–Lime–Silica Glasses (2001)
    Westerville, Ohio : American Ceramics Society
    Journal of the American Ceramic Society 84 (2001), S. 0 
    Details
    ISSN: 1551-2916
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The annealing characteristics of Knoop-indented silica and soda–lime–silica glasses were investigated. These glasses were indented using a Knoop indenter in water, and they were annealed at various temperatures below the glass transition temperature. The major diagonal length of the Knoop indentation was measured before and after annealing, and the change of the diagonal length was determined. The change of diagonal length in silica glass was much larger than that in soda–lime–silica glass. This was attributed to the occurrence of more densification around the Knoop indentation in the silica glass. The activation energy of the shrinkage of the Knoop indentation in the silica glass, estimated from the temperature dependence of the relaxation time, was 46 kJ/mol, which was much less than that of viscous flow in silica glass. This suggested that the shrinkage of the Knoop indentation was caused by the structural relaxation of densified glass around the Knoop indentation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1151-2916.2001.tb00976.x
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  • 3
    Electronic Resource
    Electronic Resource
    Evaluation of Crack Growth in Glass by Using Stress-Wave Fractography (1999)
    Westerville, Ohio : American Ceramics Society
    Journal of the American Ceramic Society 82 (1999), S. 0 
    Details
    ISSN: 1551-2916
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Subcritical crack growth in glass shows three characteristic regions, depending on crack velocity. Among three regions, in region III, where water does not affect crack-growth behavior, the slope of the crack-growth curve can be correlated with the intrinsic nature of glass fracture. In this study, to measure the crack velocity in region III, a periodic stress wave was applied to produce fracture-surface markings in the double-cleavage-drilled compression specimen. The crack-growth data obtained were compared with results obtained via direct observation of the crack front. As a result, this method, by using stress-wave fractography, was found to be effective to obtain the crack-growth curve in region III.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1151-2916.1999.tb01973.x
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  • 4
    Electronic Resource
    Electronic Resource
    New ring-opening polymerization via a .pi.-allylpalladium complex. 2. Novel proton-transfer polymerization of vinylcyclopropane derivatives having two electron-withdrawing substituents (1993)
    s.l. : American Chemical Society
    Macromolecules 26 (1993), S. 4748-4750 
    Details
    ISSN: 1520-5835
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ma00070a003
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  • 5
    Electronic Resource
    Electronic Resource
    Polymerase chain reaction for identification of aldoxime dehydratase in aldoxime- or nitrile-degrading microorganisms (2005)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 246 (2005), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: We developed a molecular screening procedure using Southern hybridization and polymerase chain reaction (PCR) to identify aldoxime dehydratase (Oxd) encoding genes (oxds) among 14 aldoxime- or nitrile-degrading microorganisms. When an oxd gene of Rhodococcus erythropolis N-771 was used as a probe, positive hybridization signals were seen with the chromosomal DNA of eight strains, suggesting that these strains have similar oxd genes to R. erythoropolis N-771. By analyzing the PCR-amplified fragments with degenerate consensus primers, the occurrence of homologous Oxd coexisting with Fe-containing NHase in the active eight strains was demonstrated coinciding with the results of Southern hybridization. Whole length of oxd gene was cloned as an example from one of the positive strains, Pseudomonas sp. K-9, sequenced, and expressed in E. coli. Analysis of the primary structure of the protein (OxdK) encoded by the oxd gene of Pseudomonas sp. K-9 led to identify an Oxd having a new primary structure. Thus, the PCR-based analysis of oxd gene is a useful tool to detect and analyze the “aldoxime-nitrile pathway” in nature, since Oxd is the key enzyme for the pathway.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/j.femsle.2005.04.011
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  • 6
    Electronic Resource
    Electronic Resource
    Poisson's Ratio and the Glass Network Topology - Relevance to High Pressure Densification and Indentation Behavior (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 39-40 (Apr. 2008), p. 137-146 
    Details
    ISSN: 1662-8985
    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: Although Poisson's ratio (ν) is a macroscopic elastic parameter it depends much on thefine details of the atomic packing. Glasses exhibit a wide range of values for  from 0.1 to 0.4which correlate to the glass network polymerisation degree, hence reproducing at the atomic scalewhat is observed in cellular materials at the macroscopic scale[1]. As for pure oxide glasses, wefound in various multi-component glasses built on ionic-, covalent- or Van der Waals bonds that anincrease of Poisson’s ratio corresponds to a decrease of the atomic network crosslink degree[2].Noteworthy, an extension of this analysis to the case of metallic glasses correlate the recentlyproposed cluster-like network structure for these glasses[3,4]. A general feature is that a highlycross-linked atomic network results in a glass with a low atomic packing density (large free volumefraction), as exemplified with the case of amorphous silica. The lower the atomic packing density isand the larger the volume change the glass experiences under high pressure (1 to 25 GPa).Indentation experiments with sharp indenters (such as the Vickers one) give birth to hydrostaticstresses of the same order of magnitude and thus induce glass densification. There is hence a directcorrelation between ν (reflecting the packing density) and the indentation behavior[5]
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.39-40.137.pdf
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  • 7
    Electronic Resource
    Electronic Resource
    Ternary Complexation of Manganese(II) and Cadmium(II) with 1,10-Phenanthroline and Halide or Thiocyanato Ions in N,N-Dimethylformamide (2000)
    Springer
    Journal of solution chemistry 29 (2000), S. 101-129 
    Details
    ISSN: 1572-8927
    Keywords: Ternary complexation ; manganese(II) ; cadmium(II) ; 1,10-phenanthroline; 2,2′-bipyridine ; halide ions ; thiocyanate ion ; titration calorimetry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Ternary complexation of manganese(II) and cadmium(II) with1,10-phenanthroline (phen), and halide (chloride, bromide) or pseudohalide (thiocyanate) ions asligands has been studied by precise titration calorimetry inN,N-dimethylformamide (DMF) at 25°C. Data obtained for the ternary system were analyzed onthe basis of thermodynamic parameters for the binary MII-phen and MII-X-(M= Mn or Cd, X = Cl, Br, or SCN) systems. In the binary MII-phen system,formation of a series of mono- to tris- 1,10-phenanthroline complexes isestablished and the formation constants and reaction enthalpies and entropies areobtained. Thermodynamic parameters of complexation for the MII-X- systemshave previously been obtained. All titration curves obtained in the ternary systemsare explained well in terms of formation of mononuclear complexes of the type[MX m (phen) N ](2−m)+. With manganese(II), formation of [MnX(phen)]+,[MnX2(phen)], [MnX3(phen)]−,[MnX(phen)2]+, and[MnX2(phen)] is establishedfor X = Cl and SCN, and [MnX(phen)]+, [MnX2(phen)], [MnX(phen)2]+, and[MnX2(phen)2] for X = Br. With cadmium(II), formation of [CdX(phen)]+,[CdX2(phen)], [CdX3(phen)]−, [CdX(phen)2]+, and [CdX2(phen)2], is establishedfor X = Cl and Br, and [CdX(phen)]+, [CdX2(phen)], [CdX(phen)2]+, and[CdX2(phen)2] for X = SCN. The formation constants, and reaction enthalpiesand entropies are obtained. The results are discussed in comparison with thosefor the corresponding 2,2′-bipyridine systems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1005173215167
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  • 8
    Electronic Resource
    Electronic Resource
    Selective inhibitors of germination of legume seeds in activated sludge compost (1996)
    Springer
    Plant growth regulation 20 (1996), S. 295-302 
    Details
    ISSN: 1573-5087
    Keywords: activated sludge ; compost ; germination inhibitor ; legume ; Sorghum bicolor ; Eleusine coracana ; Brassica rapa
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Water extracts of the compost produced from activated sludge and coffee residue were found to be selectively inhibitory to seed germination of some legumes. Germination rate of white clover (Trifolium repens L.), red clover (Trifolium pratense L.) and alfalfa (Medicago sativa L.) seeds were reduced to 2, 29 and 73% of the control, respectively, by water extracts of the compost (20 g l−1). However, the extracts did not show any inhibition to seed germination of sorghum (Sorghum bicolor Moench), African millet (Eleusine coracana Gaertn.), and Komatsuna (Brassica rapa L.) at the same concentration. The inhibitors in the compost extracts were separated by ion-exchange chromatography and reverse-phase high performance liquid chromatography (HPLC) and the inhibitory activities of seed germination were tested with white clover seeds. Five inhibitors were isolated and identified as 3,4-dichlorophenylacetic acid (3,4-DCP), 3,4-dichlorobenzoic acid (3,4-DCB), 3,4,5-trichlorophenylacetic acid, 3,4,5-trichlorobenzoic acid and mono-2-ethylhexylphthalate by 1H-, 13C-NMR spectroscopy and mass spectrometry. The inhibitory activities of some authentic chemicals of the inhibitors and the related compounds were compared. The results indicated that the main inhibitor in the compost could be 3,4-DCB, which was contained at the concentration of 6.58 mg kg−1 compost and showed the strongest inhibitory effect on seed germination of white clover among the tested compounds.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00043321
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  • 9
    Electronic Resource
    Electronic Resource
    Heat of Reaction of the Hydrolysis-Polymerization Process of Tetraethyl Orthosilicate in Acidic Condition (2000)
    Springer
    Journal of sol gel science and technology 19 (2000), S. 661-664 
    Details
    ISSN: 1573-4846
    Keywords: heat of reaction ; tetraethyl orthosilicate ; heat of hydrolysis ; heat of polymerization ; sol-gel
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Heat of reaction of the hydrolysis-polymerization process of tetraethyl orthosilicate with water in acidic condition was investigated to clarify the thermodynamic driving force of sol-gel reactions. Heat of reaction was measured using an isoperibol calorimeter by mixing a dilute tetraethyl orthosilicate (TEOS) ethanolic solution with another solution of water, ethanol, and hydrochloric acid. The temperature change of the reaction cell had been measured more than 24 hours after mixing under the quasi-isothermal condition. Large exothermic reaction (12.9 kJ·mol−1 for 1 mole of TEOS) due to the hydrolysis of TEOS was observed. A slow exothermic reaction followed it, and after that, the sol-gel reaction was changed to a small endothermic one.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008746318901
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  • 10
    Electronic Resource
    Electronic Resource
    Characterization of a staurosporine- and temperature-sensitive mutant, stt1, of Saccharomyces cerevisiae: STT1 is allelic to PKC1 (1992)
    Springer
    Molecular genetics and genomics 231 (1992), S. 337-344 
    Details
    ISSN: 1617-4623
    Keywords: Saccharomyces cerevisiae ; Staurosporine ; Protein kinase C ; Cell cycle
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Staurosporine is an antibiotic that specifically inhibits protein kinase C. Fourteen staurosporine- and temperature-sensitive (stt) mutants of Saccharomyces cerevisiae were isolated and characterized. These mutants were divided into ten complementation groups, and characterized for their cross-sensitivity to K-252a, neomycin, or CaCl2, The STT1 gene was cloned and sequenced. The nucleotide sequence of the STT1 gene revealed that STT1 is the same gene as PKC1. The STT1 gene conferred resistance to staurosporine on wild-type cells, when present on a high copy number plasmid. STT1/stt1::HIS3 diploid cells were more sensitive to staurosporine than STT1/STT1 diploid cells. Analysis of temperature-sensitive stt1 mutants showed that the STT1 gene product functioned in S or G2/M phase. These results suggest that a protein kinase (the STT1 gene product) is one of the essential targets of staurosporine in yeast cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00292700
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