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  • 1
    Electronic Resource
    Electronic Resource
    Inheritance of resistance to the ‘Kanpur’ race of Phytophthora drechsleri in pigeonpea (2003)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 122 (2003), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Phytophthora drechsleri causes stem blight, which is one of the most serious diseases of pigeonpea. Eight races of this fungus have been identified, but the inheritance of resistance to all these races is not clear except for race P2. This study examined the inheritance of resistance to race ‘Kanpur’ (KPR) of P. drechsleri in eight crosses involving four resistant parents, viz.‘KPBR 80-2-1′, ‘KPBR 80-2-2′, ‘Hy 3C and ‘BDN 1′, and two susceptible parents, viz.‘Bahar’ and ‘PDA 10′. The reactions of the parental lines, and their F1, F2 and backcross generations were studied in an infected plot. In the F1 generation of all crosses, a susceptible reaction was observed that indicated dominance of susceptibility over resistance. The segregation pattern in F2 indicated that two homozygous recessive genes (pdr1pdr1pdr2pdr2) were responsible for imparting resistance in the parents, ‘KPBR 80-2-1’ and ‘KPBR 80-2-2′, and that a single homozygous recessive gene (pdrpdr) was responsible for resistance in the parents ‘Hy 3C and ‘BDN 1′. Therefore, ‘KPBR 80-2-1’ and ‘KPBR 80-2-2’ with two genes for resistance are better donors because the resistance transferred from them will be more durable compared with ‘Hy3C and ‘BDN1’ with only one gene for resistance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1439-0523.2003.00804.x
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  • 2
    Electronic Resource
    Electronic Resource
    Tungstate induced corrosion of some aluminium alloys in acidic chloride solution — An approach for controlling it with morpholine (1983)
    Springer
    Journal of applied electrochemistry 13 (1983), S. 807-812 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract The corrosion behaviour of some aluminium alloys (1060, 1100 and 3003) in acidic chloride solution (pH=1) have been studied in the presence of various concentrations of tungstate ions. The alloy most vulnerable to the effects of tungstate ions is 1100 followed by 1060 and 3003 alloys. After six hours of immersion the alloys exhibit 6 to 8 times higher corrosion rates compared to that in the blank solution containing only chloride ions. The experiments suggest that the tungstate ion stimulates the corrosion of aluminium by acting as a cathodic depolarizer. Morpholine effectively arrests the dissolution of the alloys in the blank electrolyte as well as in the presence of tungstate ions. Morpholine polarizes local cathodic sites to act as an inhibitor. Tungstate ions are not adsorbed on the surface in the presence of morpholine and a synergistic effect is obtained at higher concentrations of morpholine. A Langmuir adsorption isotherm has been used to explain the data.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00615831
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  • 3
    Electronic Resource
    Electronic Resource
    Effects of some thioureas on the dissolution of aluminium alloys in nitric acid (1981)
    Springer
    Journal of applied electrochemistry 11 (1981), S. 671-676 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract A study has been made on the inhibitive efficiency of some thioureas (urea, thiourea, phenylthiourea and naphthylthiourea), in the concentration range 0.0025 to 2%, in relation to dissolution of some aluminium alloys (1060, 1100, 3003 and 5052) in 20% nitric acid solution at temperatures of 25, 35 and 45° C. It was found that the structures of the thioureas affected the inhibitive efficiency but the mechanism of inhibition remained the same. The compounds exhibited maximum protection in the concentration range 0.025 to 0.03%. A gradual lowering in the efficiency of the compounds above the concentration of 0.03% has been observed. At the concentration of 1.5%, urea appears to be a corrosion accelerator and causes localized attack on the alloy surface; the other compounds still showed some degree of inhibition. The additives were most efficient towards 1060 alloy, followed by 1100, 3003 and 5052 alloys. The protecting power of all the compounds other than urea was found to improve with increase in temperature. All the compounds appeared to inhibit corrosion by adsorbing at cathodic sites. A distinctive hump (i.e. a current maximum) is observed in the steady-state potentiostatic anodic polarization curves of the alloys. This hump is found to be affected by the inhibitors. At higher concentrations, the compounds act as cathodic depolarizers, which is confirmed by measuring steady-state corrosion potentials and cathodic polarization diagrams.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00615169
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  • 4
    Electronic Resource
    Electronic Resource
    Inhibitive effects of isatin, thiosemicarbazide and isatin-3-(3-thiosemicarbazone) on the corrosion of aluminium alloys in nitric acid (1980)
    Springer
    Journal of applied electrochemistry 10 (1980), S. 587-592 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract The inhibitive efficiencies of isatin, thiosemicarbazide and their condensation product, i.e. isatin-3-(3-thiosemicarbazone) are studied at different concentrations in relation to corrosion of aluminium alloys (1060,1100, 3003) in 20% nitric acid at 30, 40 and 50° C using the weight loss method. Polarization experiments have been performed at 0.05, 0.2 and 0.3% concentrations of the inhibitors at 30° C. It is found that isatin-3-(3-thiosemicarbazone) is a more effective inhibitor as compared to the parent compounds for the three alloys at all the experimental temperatures. The effectiveness of the inhibitors increases with increase in temperature from 30° C to 50° C. The inhibitors are found to retard the corrosion by predominantly acting on local cathodes although they are also partially effective on the anodes. The critical current density for the passivation of aluminium decreases almost in the same order as the inhibition efficiency of the inhibitors increases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00615480
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  • 5
    Electronic Resource
    Electronic Resource
    Transpassive dissolution of iron in sulphuric acid solution (1984)
    Springer
    Journal of applied electrochemistry 14 (1984), S. 349-355 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract Anodic oxidation characteristics of iron in 3, 10 and 12 mol dm−3 sulphuric acid solutions have been studied in the transpassive region. Dissolution current efficiency measurements have been carried out using potentiostatic current-voltage curves and solution analysis techniques. The current-voltage curves were split into metal dissolution and oxygen evolution curves assuming that the iron goes into solution as Fe3+. The current density value in the passive region increased whereas the current density in the transpassive region decreased with the increase of sulphuric acid solution concentration. In order to obtain information about the nature of the films present on the surface, potential decay curves from different anodic potentials in the transpassive region have been recorded. It seems that there is no passive film present on the specimen surface in 12 mol dm−3 sulphuric acid solution and a better surface finish is obtained after the dissolution. Depth profile analysis of oxide films by the AES technique in 3 mol dm−3 sulphuric solution reveals that the sulphur concentration is maximum at the metal/oxide interface rather than at the oxide/electrolyte solution interface as required by an ion exchange mechanism for film dissolution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01269935
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  • 6
    Electronic Resource
    Electronic Resource
    Incidence of aflatoxins and aflatoxin producing fungi in animal feedstuffs (1979)
    Springer
    Mycopathologia 69 (1979), S. 149-151 
    Details
    ISSN: 1573-0832
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Fifty four samples including 5 of broken rice, 8 of corn grains, 8 of corn gluten feed, 13 of cottonseed cake and 4 each of rice polish, corn gluten, sesame oil cake, guar meal and wheat bran were screened for the presence of aflatoxins. Among all the samples, 14 were damaged and 40 apparently undamaged. The incidende of aflatoxins was found to be 60, 25, 25, and 23 per cent in broken rice, corn grains, corn gluten feed and cottonseed cake. Aflatoxins were not detected from rice polish, corn gluten, sesame oil cake, guar meal and wheat bran. Damaged sample revealed a much higher incidence i.e. 50 per cent as compared to undamaged ones i.e. 7.5 per cent. Mean concentration of aflatoxin B and G was found to be 15.5 and 12.2 ppb respectively. Cultural examination of aflatoxin positive feedstuffs yielded 39 isolates of different fungi including 21 of Aspergillus, 7 of Mucor, 6 of Rhizopus, 4 of Fusarium and one of Penicillium. These strains when tested for aflatoxin producing ability, revealed this property in only one isolate, identified as Aspergillus parasiticus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00452826
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  • 7
    Electronic Resource
    Electronic Resource
    Dielectric properties and thermal expansion of semicarbazide hydrochloride and its deuterated single crystals (1987)
    Springer
    Journal of materials science 6 (1987), S. 323-325 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01729341
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  • 8
    Electronic Resource
    Electronic Resource
    Effect of laser excitation on F-band absorption and thermoluminescence of X-ray irradiated KBr single crystals (1986)
    Springer
    Journal of materials science 21 (1986), S. 4315-4317 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The F-band absorption and thermoluminescence (TL) of as-cleaved or quenched KBr single crystals after X-ray irradiation and later exciting with a laser beam have been studied. The F-centre concentration at room temperature is considerably reduced with laser excitation as is the TL output. These experiments indicate that a considerable concentration of F-centres in X-ray irradiated KBr crystals can be destroyed even at room temperature by laser excitation. An attempt is made to interpret these results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01106548
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  • 9
    Electronic Resource
    Electronic Resource
    On the corrosion characteristics of some commercial magnetic metallic glasses in NaCl solution (1987)
    Springer
    Journal of materials science 22 (1987), S. 2723-2728 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The corrosion characteristics of six commercial magnetic metallic glasses, namely Fe78B13Si9 (Metglas 2605-S-2), Fe67Co18B14Si (Metglas 2605 Co), Fe40Ni40B20 (Vitrovac 0040), Fe39Ni39Mo2(SiB)20 (Vitrovac 4040), Fe40Ni38Mo4B18 (Metglas 2826 MB) and Fe40Ni40P14B6 (Metglas 2826) in which iron and boron are common base elements have been studied by immersion tests and potentiostatic techniques in various concentrations of NaCl solutions at room temperature. In exposure for up to six days, weight loss observations indicated that the corrosion rates in 3.5% NaCl were in the following increasing order: 2826 〈 4040 〈 0040 〈 2826 MB 〈 2605 Co 〈 2605-S-2. During exposure for up to four hours under open-circuit conditions, 2826 alloy showed the noblest behaviour while 2605-S-2 was the least noble. All the alloys, except 2826, showed rapid dissolution without any passivation during anodic polarization. Phosphorus addition to Fe-Ni-B glass enhanced the active dissolution and resulted in the formation of a black prepassive film in the active region (0.2V) which becomes protective in the passive region (0.3 to 1.25V). The values ofI crit. andI pass. (the critical and passive current densities) decreased with a decrease of concentration from 3.5 to 0.01% NaCl, while in 0.001% NaClI pass. slightly increased and the passivation potential range decreased. The corrosion resistance of Fe-B metallic glasses increased with metal addition in the order Co 〈 Mo 〈 Ni and with metalloid addition in the order Si 〈 P.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01086463
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  • 10
    Electronic Resource
    Electronic Resource
    FISH mapping of seven cDNA sequences in the pig (1997)
    Springer
    Chromosome research 5 (1997), S. 545-549 
    Details
    ISSN: 1573-6849
    Keywords: cDNA ; fluorescence in situhybridization ; pig
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Fluorescence in situ hybridization (FISH) technique was applied to localize seven clones derived from a porcine (SSC) intestinal directionally cloned cDNA library. The size of the clones ranged from 1.1 to 1.3 kb. Three of the clones corresponded to histidyl-tRNA synthetase (HARS), immunoglobulin alpha (IGA) and lysozyme (LYZ) and mapped to SSC2q28–q29, 7q2.6 and 5p11 respectively. The available human—pig comparative painting data and sequence homology comparisons assisted in a tentative identification of the other three clones as glutathione-S-transferase (GST), glutathione-S-transferase mu (GSTM1) and immunoglobulin lambda gene cluster (IGL〉1w0,4,14, 5q2.4 and 14q22–q23 respectively. The remaining clone representing an EST mapped to 1p24–p25. These localizations contribute to the transcript map in pig and are significant as comparative markers. Difficulties associated with the mapping of small sequences using FISH are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1018445820059
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