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  • 1
    Electronic Resource
    Electronic Resource
    Tribochemical wear of carbon films in oxygen (1994)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 76 (1994), S. 4651-4655 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Gases sampled directly from the sliding interface of a carbon-coated thin-film magnetic recording disk and a conventional read/write head show that carbon dioxide is generated during sliding in both dry-nitrogen and dry-oxygen environments. The generation rate is approximately ten times greater when sliding in oxygen rather than nitrogen. A novel pressure interface and sampling system was developed for the experiments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.357302
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  • 2
    Electronic Resource
    Electronic Resource
    Magnetic recording measurements of high coercivity longitudinal media using magnetic force microscopy (MFM) : The 40th annual conference on magnetism and magnetic materials (1996)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 79 (1996), S. 5327-5329 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Longitudinal magnetic recordings written on high coercivity medium (Hc=2500 Oe) were investigated using magnetic force microscopy (MFM). Recorded tracks with bit density up to 6000 fr/mm were investigated. A variety of qualitative information about the recorded tracks and domain structure in the medium was obtained. It was determined that the recorded bits strongly interacted with domains in the medium at the track edges, causing severe jitter. Also bit bending due to the head field was observed. A new method for the quantitative analysis of recorded tracks was used. Using this method, recording signal and medium signal-to-noise ratio were calculated from MFM data. Parameters obtained in this way showed excellent agreement with signal and signal-to-noise ratio obtained from the recording measurement using a MR head. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.361367
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  • 3
    Electronic Resource
    Electronic Resource
    Design tradeoffs for beyond 20 Gb/in.2: Using a merged notched head on advanced low noise media (invited) (2000)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 87 (2000), S. 4996-5000 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Design considerations for areal densities beyond 20 Gb/in.2 are discussed, and in particular a demonstration at 24.8 Gb/in.2 is shown. The demonstrations used a single combined write and read head (Merge, Notched head). In this article we will discuss the tradeoffs in kilobytes per inch (KBPI) and tracks-per-inch in obtaining areal densities at 25 Gb/in.2 densities. The KBPI is limited by both the total signal-to-noise ratio and the nonlinear-transition shift. Simple estimates of the increase in channel performance from class IV partial response (PR4), extended partial response 4 (EPR4), and modified EEPR4, as well as the addition of codes which eliminate bit shift and tribit errors are discussed as large contributors to the increase in the areal density. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.373227
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  • 4
    Electronic Resource
    Electronic Resource
    Hardness, elastic modulus, and structure of very hard carbon films produced by cathodic-arc deposition with substrate pulse biasing (1996)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 68 (1996), S. 779-781 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The hardness, elastic modulus, and structure of several amorphous carbon films on silicon prepared by cathodic-arc deposition with substrate pulse biasing have been examined using nanoindentation, energy loss spectroscopy (EELS), and cross-sectional transmission electron microscopy. EELS analysis shows that the highest sp3 contents (85%) and densities (3.00 g/cm3) are achieved at incident ion energies of around 120 eV. The hardness and elastic modulus of the films with the highest sp3 contents are at least 59 and 400 GPa, respectively. These values are conservative lower estimates due to substrate influences on the nanoindentation measurements. The films are predominantly amorphous with a ∼20 nm surface layer which is structurally different and softer than the bulk. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.116530
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  • 5
    Electronic Resource
    Electronic Resource
    Development of Strains with Yellow Seedcoat in Indian Mustard (Brassies juncea Czern. & Coss.) (1986)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 97 (1986), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: A mutant with yellow seedcoat colour was isolated by Nayar (1968) in the mustard variety‘Rai-5′. This mutant was crossed to the national check cultivar ‘Varuna’ in order to develop improved strains with yellow seedcoat. Four such strains with yellow seeds were evaluated for their seed yield, yield components and percent oil. Two strains TM-9 and TM-17 were more productive than ‘Varuna’ in seed yield. All the yellow seeded strains showed higher oil percentage as compared to ‘Varuna’. The seedcoat in the yellow seeded strains accounts for 14-15% of the seed weight as compared to 18% in the black seeded ‘Varuna’. The higher proportion of the cotyledons and embryo accounts for the increased oil percentage in the yellow seeded types.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1439-0523.1986.tb01307.x
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  • 6
    Electronic Resource
    Electronic Resource
    Karyotype Analysis of Sesbania rostrata Brem. (1988)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 100 (1988), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The karyotype of Sesbania rostrata, a species endemic to West Africa, which produces nitrogen fixing, nodules on stem and branches, was analysed. The somatic chromosome number was 12 with two pairs of long, submetacentric and four pairs of short, metacentric chromosomes. The chromosome number in another species S. aculeata, which is well adapted as a green manure crop in India but not capable of stem nodulation, was also 2n = 12. The similarity between the chromosome complements of the two species indicates that they may be cross compatible.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1439-0523.1988.tb00232.x
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  • 7
    Electronic Resource
    Electronic Resource
    Testing for Tolerance to Aphids in Indian Mustard, Brassica juncea (L.) Czern and Coss. (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 112 (1994), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Brassica juncea plants were screened for aphid tolerance using three methods. Seven and 14 days old seedlings grown in wooden trays in a glasshouse were kept between infector trays with heavy aphid infestation. There were no surviving plants in the susceptible genotypes 50 days after sowing but survival rates ranging between 80 and 90 % were observed for selection 44. The progenies of the surviving plants were tested under natural infestation in the field. Plants were scored for leaves without aphids 40 days after sowing, healthy plants at harvest and seed yield in g/m2 For most of these lines, the aphids’ survival, life span and fecundity (nymphs produced per adult) were recorded after introducing five newly-born nymphs on excised fifth leaves cultured in petri dishes. Selections showing greater tolerance to aphids than the check cultivars were identified in the progenies of a cross RLM-514 × T-6342. It was concluded that the excised leaf method can provide a reliable measure of the lines’ reaction to aphids.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1439-0523.1994.tb00682.x
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  • 8
    Electronic Resource
    Electronic Resource
    Selection For Flag Leaf Stomatal Frequency In Bread Wheat (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 110 (1993), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Two Cultivars Of Bread Wheat (Triticum Aestivum L.) Showing Significant Differences In Stomatal Frequency On The Adaxial Surface Of The Flag Leaf Blade, Were Hybridized. Transgressive Segregation For Stomatal Frequency Was Observed In The F2 Generation and Selections Were Made For High and Low Stomatal Frequency. In The F9 Generation Two Selections Had Significantly Higher Frequencies Than The Higher Parent. Heritability For Stomatal Frequency Based On Parent-Progeny Regression Were 42 % (F3—F4) and 81 % (F4—F5). Stomatal Frequency Was Negatively Correlated With The Flag Leaf Blade Area, Mesophyll Cell Size and Grain Size, However, Exceptions Were Observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1439-0523.1993.tb01224.x
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  • 9
    Electronic Resource
    Electronic Resource
    Effect of Induced Awn Mutations on Yield in Wheat (1961)
    [s.l.] : Nature Publishing Group
    Nature 190 (1961), S. 468-468 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Twenty-five awned mutants of N.P. 799 and six jsuch mutants of N.P. 809 were grown in replicated rod-row trials during 1958. All the awned mutants of N.P. 799 yielded more than the parent strain, while in N.P. 809 some yielded better and some lower. In both the varieties, the mutants found to be ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/190468a0
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  • 10
    Electronic Resource
    Electronic Resource
    Inheritance of powdery mildew (Erysiphe polygoni DC) resistance in mungbean (Vigna radiata L. Wilczek) (1994)
    Springer
    Theoretical and applied genetics 88 (1994), S. 945-948 
    Details
    ISSN: 1432-2242
    Keywords: Mungbean ; Erysiphe polygoni ; Inheritance Powdery mildew ; Resistance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Detached mungbean (Vigna radiata L.Wilczek) leaves were inoculated with a conidial suspension of a local isolate (TI-1) of the powdery mildew pathogen (Erysiphe polygoni DC) under controlled environment conditions. Based on the latent period and severity of the infection, a rating scale of 0–5 was used to classify the host pathogen interactions. Reactions 0, 1 and 2 were considered resistant and referred to as R0, R1 and R2 while 3, 4 and 5 were classified as susceptible (S). RUM lines (resistant to powdery mildew) and their derivatives are crossed with several susceptible (reaction types 3–5) genotypes and the inheritance of the resistance was studied in the F1, F2 and F3 generations. The results showed that powdery mildew resistance in mungbean is governed by two dominant genes designated as Pm-1 and Pm-2. When both Pm-1 and Pm-2 were present, an R0 reaction was observed after inoculation with TI-1. The resistant reaction was R1 when only Pm-1 was present and R2 in the presence of Pm-2. In the absence of both Pm-1 and Pm-2, susceptible reactions 3, 4 and 5 were observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00220800
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