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  • 1
    Digitale Medien
    Digitale Medien
    Identification of a single promoter in E. coli for rplJ , rplL and rpoBC (1978)
    [s.l.] : Nature Publishing Group
    Nature 276 (1978), S. 33-37 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] A set of restriction fragments cloned into phage λ vectors has allowed us to locate a site necessary for full rpoBC expression. We find that these genes for the two large subunits of RNA polymerase and the genes, rplL and rplJ, for two ribosomal proteins, form a single ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/276033a0
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    A mutation affecting the σ subunit of RNA polymerase changes transcriptional specificity (1978)
    [s.l.] : Nature Publishing Group
    Nature 273 (1978), S. 354-358 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The RNA polymerase mutation, alt-1, affects the σ subunit and alters the in vitro selectivity of RNA polymerase to parallel the in vivo phenotype. We propose that the mutation changes the distribution of functionally distinct polymerase ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/273354a0
    Standort Signatur Erwartet Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Expression of the genetic apparatus (1977)
    [s.l.] : Nature Publishing Group
    Nature 270 (1977), S. 121-122 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Gene Expression. Vol. 3: Plasmids and Phages. By Benjamin Lewin. Pp.942/ 928. (Wiley: London and New York, 1977.) Hardback £24; $40.65; paperback £10.25; $19.50. READERS of this journal will be familiar with the changing fortunes of microbial genetics in recent years. In ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/270121a0
    Standort Signatur Erwartet Verfügbarkeit
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  • 4
    Digitale Medien
    Digitale Medien
    Systematic nomenclature for the RNA polymerase genes of prokaryotes (1976)
    [s.l.] : Nature Publishing Group
    Nature 260 (1976), S. 646-648 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] (1) The symbol rpo should be applied to the structural genes coding for RNA polymerase subunits, and to their regulatory genes and sites. (The symbol rna, proposed in 1968 (ref. 7), has not come into general use11.) (2) The genes for the a, b and b? subunits should be called rpoA, rpoB and rpoC, ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/260646a0
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  • 5
    Digitale Medien
    Digitale Medien
    The capacity for joint visual attention in the infant (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 265-266 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Mothers who had volunteered as subjects in response to newspaper advertisements were asked to bring their infants into our laboratory at a time when the infant was 'usually active'. Thirty-four infants, 2-14 months old, were tested in a small, sparsely-furnished room (15 ft by 10 ft) with a one-way ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/253265a0
    Standort Signatur Erwartet Verfügbarkeit
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  • 6
    Digitale Medien
    Digitale Medien
    Electrolytic manganese metal from chloride electrolytes. II. Effect of additives (1976)
    Springer
    Journal of applied electrochemistry 6 (1976), S. 453-462 
    Details
    ISSN: 1572-8838
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Elektrotechnik, Elektronik, Nachrichtentechnik
    Notizen: Abstract Results of beaker scale and large laboratory scale experiments on the deposition of manganese from chloride electrolytes using selenium based additives are reported. High cathode efficiencies (85–90%) were obtained at moderate selenium levels (0.03–0.06 gl−1). Selenium pick-up in the deposit was lower when selenium was added as the selenate [Se(VI)]. A cost/benefit analysis of selenium additions is presented.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00616545
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  • 7
    Digitale Medien
    Digitale Medien
    Electrolytic manganese metal from chloride electrolytes. I. Study of deposition conditions (1976)
    Springer
    Journal of applied electrochemistry 6 (1976), S. 199-209 
    Details
    ISSN: 1572-8838
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Elektrotechnik, Elektronik, Nachrichtentechnik
    Notizen: Abstract Results of beaker scale and large laboratory scale experiments on the deposition of manganese from chloride electrolytes are reported for conditions where chlorine is the secondary anode product. Manganese concentration in the catholyte was found to be the most significant variable, with higher manganese levels (to 33 g Mn l−1) resulting in higher current efficiency (65–70%) and lower power consumption (5.5 kWh kg−1). Temperature (30–60°C) and current density (1.0–2.0 kAm−2) had opposing effects on current efficiency and power consumption. In the ranges studied, lower temperatures and higher current densities gave rise to increases in current efficiency and power consumption. The literature on the electrowinning of manganese from chloride electrolytes is reviewed and the anomalies in previous reports discussed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00616142
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  • 8
    Digitale Medien
    Digitale Medien
    Calcium-related disorders in plants — a possible explanation for the effect of weather (1978)
    Springer
    Plant and soil 50 (1978), S. 723-725 
    Details
    ISSN: 1573-5036
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Summary Incidence in the field of crop disorders known to be due to localised calcium deficiency bears little relation to soil calcium status, and is more often associated with particular types of weather. We are suggesting that brief periods of soil partial anaerobiosis following wet weather, and other unfavourable soil physical conditions such as compaction, lead to a temporary reduction in the distal, undifferentiated region of roots from which the majority of the calcium taken up is transported to the shoot. This might lead to a transient calcium deficiency in rapidly growing shoot tissues, and thence to necrosis.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02107226
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  • 9
    Digitale Medien
    Digitale Medien
    The relationship between crop yield and petiole nitrate concentration at various growth stages (1977)
    Springer
    Plant and soil 46 (1977), S. 705-712 
    Details
    ISSN: 1573-5036
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Summary The critical concentration of a mineral element in plants is usually defined by reference to the curve relating yield to plant nutrient concentration. This curve alters shape depending on the stage of growth, species, and other factors such as light and temperature, so that the critical concentration also varies. It is shown that this effect could arise from two simple, but reasonable assumptions: first, that the percentage depression of growth rate due to nutrient deficiency is related by a simple diminishing-returns type function to plant nutrient concentration in a manner which is independent of growth stage: and second, that the absolute growth rate of non-limited plants declines as their weight increases beyond a certain value. If the critical concentration were to be defined in terms of percentage growth rate depression, it is possible that it would be found to be much less variable than it now seems. re]19760730
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00015936
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  • 10
    Digitale Medien
    Digitale Medien
    Calcium-related disorders in plants — a possible explanation for the effect of weather (1978)
    Springer
    Plant and soil 50 (1978), S. 723-725 
    Details
    ISSN: 1573-5036
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Summary Incidence in the field of crop disorders known to be due to localised calcium deficiency bears little relation to soil calcium status, and is more often associated with particular types of weather. We are suggesting that brief periods of soil partial anaerobiosis following wet weather, and other unfavourable soil physical conditions such as compaction, lead to a temporary reduction in the distal, undifferentiated region of roots from which the majority of the calcium taken up is transported to the shoot. This might lead to a transient calcium deficiency in rapidly growing shoot tissues, and thence to necrosis.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02107226
    Standort Signatur Erwartet Verfügbarkeit
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