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  • 1
    Publication Date: 1994-02-01
    Print ISSN: 0953-2048
    Electronic ISSN: 1361-6668
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Published by Institute of Physics
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  • 2
    Publication Date: 1994-04-01
    Print ISSN: 0953-2048
    Electronic ISSN: 1361-6668
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Published by Institute of Physics
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  • 3
    Publication Date: 1993-04-01
    Print ISSN: 0953-2048
    Electronic ISSN: 1361-6668
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Published by Institute of Physics
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 237 (1974), S. 0 
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 27 (1971), S. 642-644 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Unmittelbar nach Zugabe von Boseimycin zuB. subtilis werden Wachstum und Proteinsynthese verhindert. DNA und RNA werden erst später beeinflusst. Die hemmende Wirkung von Boseimycin auf die behandelten Zellen ist nach Waschung mit Phosphatpuffer reversibel.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1126-5434
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract: In this paper, an attempt has been made to carry over known results for the finite element Galerkin method for a time dependent parabolic equation with nonsmooth initial data to an integro-differential equation of parabolic type. More precisely, for the homogeneous problem a standard energy technique in conjunction with a duality argument is used to obtain an L 2-error estimate of order for the semidiscrete solution when the given initial function is only in L 2. Further, for the nonhomogeneous case with zero initial condition, an error estimate of order uniformly in time is proved, provided that the nonhomogeneous term is in L ∞(L 2). The present paper provides a complete answer to an open problem posed on p. 106 of the book Finite Element Methods for Integro-differential Equations by Chen and Shih.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Plant cell reports 10 (1991), S. 247-250 
    ISSN: 1432-203X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract In vitro regeneration of plantlets and multiplication of Sesbania bispinosa (Jacq.) W.F. Wight plants from cultured callus tissue were demonstrated. Callus was established from both cotyledons and mature leaflets on Murashige and Skoog (MS) basal medium supplemented with BAP (0.5 mg/l) and 2,4-D (2 mg/l). Callus mediated shoot bud differentiation was studied under defined nutritional, hormonal and cultural conditions. Various concentrations of BAP or kinetin (Kn) with coconut milk (CM) in MS media induced different levels of shoot bud differentiation as well as multiplication. Multiple shoot bud differentiation occurred in most of the primary calli. The best medium for shoot bud differentiation from cotyledon derived callus, contained BAP (2 mg/l) and 15% CM (V/V). More efficient shoot bud organogenesis was recorded with BAP than Kn. Supplementation with CM in MS media accelerated shoot bud organogenesis in differentiating callus tissue. Rooting of differentiated shoots was achieved by a three step culture procedure involving (a) MS solid medium containing IBA (2 mg/l), (b) growth regulator free half strength MS medium with 1% charcoal, and (c) half strength MS liquid medium free of vitamins, growth regulators and charcoal.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    International journal of anthropology 15 (2000), S. 147-160 
    ISSN: 1824-3096
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary and Conclusion The analysis contained in this paper brings out very clearly that the practice of breastfeeding and abstinence in the two major states of India: Uttar Pradesh and Tamilnadu are highly related to socio-cultural factors and changes in generational gaps. The findings reveal that literate, non-Hindu, and rich (high SLI) women have shorter breastfeeding durations than illiterates, Hindus, and poor (low SLI) women of Uttar Pradesh and Tamilnadu. In addition, the breastfeeding practice in Uttar Pradesh is influenced by residence background and generational age-gaps. The role of socio-cultural factors in influencing post-partum sexual abstinence period has been found to be significantly important through the variables; residence background, generational age-gaps, religion and working status of women. The results reveal that urban women, of younger cohorts (below 30 years), non-Hindu, and non-working women have shorter abstinence periods compared to rural women, of older cohorts (above 30 years), Hindus, and working women in both the states. The findings from this analysis suggest that apart from modernization process, defined in terms of higher literacy levels, higher developmental and urbanization levels, the changing perceptions and attitude towards lactational practices over the generation has significant dent on shortening of breastfeeding durations and abstinence periods. Thus, the study support the hypothesis that the process of modernization defined in terms of improvement in level of education, family income, urbanization tends to shorten the period of breastfeeding and abstinence, and consequently, the post-partum infecundability is reduced. Such reductions in the infertile periods can be expected to contribute to an increase in natural fertility levels of the population and also on the observed fertility levels, if not counter balanced by the fertility reducing effects of contraception.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Hydrobiologia 197 (1990), S. 245-256 
    ISSN: 1573-5117
    Keywords: saline lakes ; plankton ; primary productivity ; salt tolerance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Two alkaline saline inland lakes of Indian arid region were studied during 1984 and 1985, to assess functioning and interaction of various environmental and biological factors. Changes in physical and chemical variables, planktonic composition, chlorophyll content and phytoplankton primary productivity were examined. Salinity in both lakes fluctuated from almost fresh water (1.80‰), to hypersaline (300‰) and acted as the main controlling factor for almost all the biotic parameters. Maximum total alkalinities were 2162 mg l−1 and 2090 mg l−1, respectively in Sambhar and Didwana lakes. Dissolved oxygen ranged from completely anoxic conditions to maxima of 11.68 and 7.29 mg 1−1, respectively in Sambhar and Didwana lakes. Nutrient enrichment in the lakes was low. The phytoplankton species composition of Sambhar lake was reduced from an earlier reported 20 genera to only 11 (Nostoc, Microcystis, Spirulina, Aphanocapsa, Oscillatoria, Merismopedia, Nitzschia, Navicula, Synedra, Cosmarium and Closterium). Phytoplankton of Didwana was composed of only 9 genera including Anabaena and Nodularia. Sambhar lake, which once contained Artemia, is now totally devoid of them. On the other hand, Artemia was the most dominant zooplankter in Didwana lake at a salinity range of 15–288‰. Other zooplankters such as Moina, Cyclops and Brachionus flourished at lower salinity levels in Didwana lake. The seasonal quantitative and qualitative phyto- and zooplankton changes in relation to salinity are documented.
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Journal of materials science 14 (1979), S. 1631-1640 
    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 High-strength low-alloy (HSLA) steels having low impact transition temperature are possible substitutes for costlier 2 1/2% and 3 1/2% nickel steels. The effects of solid solution strengthening, grain size and precipitation in ferrite on the strength and toughness of low-carbon steels and the special advantages of vanadium as an alloying element in HSLA steels, are discussed. An investigation has been carried out with 1.5% manganese low-carbon steels containing vanadium in the range 0.12% to 0.29% and 0.013% to 0.017% nitrogen. Room temperature tensile and sub-zero temperature impact tests down to−100° C, and a metallographic study to determine the grain sizes and pearlite contents of the steels normalized at different temperatures, have been carried out. Calculations are made with empirical equations for yield and tensile strengths and the values obtained are compared with those experimentally observed. The solubility products of vanadium carbide and vanadium nitride are calculated and compared with available data to throw light on the mechanism of strengthening of the steels.
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