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  • Articles  (22)
  • Springer  (20)
  • American Chemical Society  (2)
  • Blackwell Publishing Ltd
  • Cambridge University Press
  • Process Engineering, Biotechnology, Nutrition Technology  (12)
  • Information Science and Librarianship  (10)
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  • Articles  (22)
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  • Springer  (20)
  • American Chemical Society  (2)
  • Blackwell Publishing Ltd
  • Cambridge University Press
  • Elsevier  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Synthesis of Cellobiose Octaacetate (1962)
    s.l. : American Chemical Society
    Industrial and engineering chemistry 1 (1962), S. 285-287 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/i360004a015
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  • 2
    Electronic Resource
    Electronic Resource
    Photosynthetic production of the filamentous cyanobacteriumSpirulina platensis in a cone-shaped helical tubular photobioreactor (1996)
    Springer
    Applied microbiology and biotechnology 44 (1996), S. 693-698 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract The photosynthetic productivity of the filamentous cyanobacteriumSpirulina platensis was investigated in a cone-shaped helical tubular photobioreactor. A laboratory-scale photobioreactor was constructed with a 0.255-m2 basal area and a conical shape (0.64 m high × 0.57 m top diameter). The photostage comprised transparent reinforced polyvinyl chloride (PVC) tubing with spirally wound, metal-wire reinforcing in the tubing wall (31 m in length and 1.6 cm internal diameter with 0.25 cm wall thickness; total volume = 6.23 l). The inner surface of the photostage (0.651 m2) was illuminated with compact fluorescent cool white lamps; the photosynthetically active radiation (400–700 nm) energy input into the photobioreactor was 1249 KJ day−1 (12 h day/12 h night). The operation of an air-lift photobioreactor with CO2-enriched air (4%) at a flow rate of 0.3 l min−1 showed a maximum daily photosynthetic efficiency of 6.83% under batch-culture conditions. This corresponded to a production rate of 15.9 g dry biomass m−2(basal area) day−1 or 0.51 g dry biomass l medium−1 day−1.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00178604
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  • 3
    Electronic Resource
    Electronic Resource
    Photosynthetic production of the filamentous cyanobacterium Spirulina platensis in a cone-shaped helical tubular photobioreactor (1996)
    Springer
    Applied microbiology and biotechnology 44 (1996), S. 693-698 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract  The photosynthetic productivity of the filamentous cyanobacterium Spirulina platensis was investigated in a cone-shaped helical tubular photobioreactor. A laboratory-scale photobioreactor was constructed with a 0.255-m2 basal area and a conical shape (0.64 m high×0.57 m top diameter). The photostage comprised transparent reinforced polyvinyl chloride (PVC) tubing with spirally wound, metal-wire reinforcing in the tubing wall (31 m in length and 1.6 cm internal diameter with 0.25 cm wall thickness; total volume=6.23 l). The inner surface of the photostage (0.651 m2) was illuminated with compact fluorescent cool white lamps; the photosynthetically active radiation (400–700 nm) energy input into the photobioreactor was 1249 KJ day-1 (12 h day/12 h night). The operation of an air-lift photobioreactor with CO2-enriched air (4%) at a flow rate of 0.3 l min-1 showed a maximum daily photosynthetic efficiency of 6.83% under batch-culture conditions. This corresponded to a production rate of 15.9 g dry biomass m-2(basal area) day-1 or 0.51 g dry biomass l medium-1 day-1.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00178604
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  • 4
    Electronic Resource
    Electronic Resource
    Actual and potential rates of hydrogen photoproduction by continuous culture of the purple non-sulphur bacterium Rhodobacter capsulatus (1998)
    Springer
    Applied microbiology and biotechnology 49 (1998), S. 102-107 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract The influence of (NH4)2SO4 concentration and dilution rate (D) on actual and potential H2 photoproduction has been studied in ammonium-limited chemostat cultures of Rhodobacter capsulatus B10. The actual H2 production in a photobioreactor was maximal (approx. 80 ml h−1 l−1) at D = 0.06 h−1 and 4 mM (NH4)2SO4. However, it was lower than the potential H2 evolution (calculated from hydrogen evolution rates in incubation vials), which amounted to 100–120 ml h−1 l−1 at D = 0.03–0.08 h−1. Taking into account the fact that H2 production in the photobioreactor under these conditions was not limited by light or lactate, another limiting (inhibiting) factor should be sought. One possibility is an inhibition of H2 production by the H2 accumulated in the gas phase. This is apparent from the non-linear kinetics of H2 evolution in the vials or from its inhibition by the addition of H2; initial rates were restored in both cases after the vials had been refilled with argon. The actual H2 production in the photobioreactor at D = 0.06 h−1 was shown to increase from approximately 80 ml h−1 l−1 to approximately 100 ml h−1 l−1 under an argon flow at 100 ml min−1. Under maximal H2 production rates in the photobioreactor, up to 30% of the lactate feedstock was utilised for H2 production and 50% for biomass synthesis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002530051144
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  • 5
    Electronic Resource
    Electronic Resource
    Nitrate and phosphate ion removal from water by Phormidium laminosum immobilized on hollow fibres in a photobioreactor (1998)
    Springer
    Applied microbiology and biotechnology 49 (1998), S. 463-468 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract Removal of nitrate and phosphate ions from water, by using the thermophilic cyanobacterium Phormidium laminosum, immobilized on cellulose hollow fibres in the tubular photobioreactor at 43 °C, was studied by continuously supplying dilute growth medium for 7 days and then secondarily treated sewage (STS) for 12 days. The concentrations of NO− 3 and PO3− 4 in the effluent from the dilute growth medium decreased from 5.0 mg N/l to 3.1 mg N/l, and from 0.75 mg P/l to 0.05 mg P/l respectively, after a residence time of 12 h. The concentrations of NO− 3 and PO3− 4 in the effluent from STS decreased from 11.7 mg N/l to 2.0 mg N/l, and from 6.62 mg P/l to 0.02 mg P/l respectively, after a residence time of 48 h. The removal rates of nitrogenous␣and phosphate ions from STS were 0.24 and 0.11 mmol day−1 l reactor−1 respectively, under the same conditions. Although, among nitrogenous ions, nitrate and ammonium ions were efficiently removed by P.␣laminosum, the nitrite ion was released into the effluent when STS was used as influent. Treatment of water with thermophilic P. laminosum immobilized on hollow fibres thus appears to be an appropriate means for the removal of inorganic nitrogen and phosphorus from treated wastewater.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002530051199
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  • 6
    Electronic Resource
    Electronic Resource
    The interface between geoscience and industry: A case study of the interaction between research and the discovery and mining of ores for nuclear fuels (1987)
    Springer
    Scientometrics 11 (1987), S. 199-216 
    Details
    ISSN: 1588-2861
    Source: Springer Online Journal Archives 1860-2000
    Topics: Information Science and Librarianship , Nature of Science, Research, Systems of Higher Education, Museum Science
    Notes: Abstract The nuclear industry was used as a case history to examine the influences between science and industry. The nuclear resources aspect of the industry was chosen for study. A correlation is found among indicators of geoscience research, exploration for uranium ores, production of uranium, and the general state of the industry. Some of the science-industry interfaces were identified as fruitful areas for further study, and a historical analysis of exploration technology shows that a scientific development engendered by the requirements of an early phase of the industry was key to later expansion in exploration and resources discovery.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02016592
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  • 7
    Electronic Resource
    Electronic Resource
    The science-industry interface: Correlation of time series of indicators and their spectra, and growth models in the nuclear fuels industry (1992)
    Springer
    Scientometrics 24 (1992), S. 237-280 
    Details
    ISSN: 1588-2861
    Source: Springer Online Journal Archives 1860-2000
    Topics: Information Science and Librarianship , Nature of Science, Research, Systems of Higher Education, Museum Science
    Notes: Abstract This paper is the third in a series on the flows of influence at the interface between geoscience research and the exploration for and mining of nuclear fuels. It deals with the application of signal processing methods to research and industry indicators, with emphasis on time and frequency domain correlations and lags, and on growth modelling of the indicators using the special and general logistic models. The findings include the following: there was a strong interchange across the science-industry interface; quantitative methods can establish the degree of correlation and the time periods in which these correlations mainly reside; also the timing of decisions to initiate exploration and research can be specified in this case. A strategy of applying quantitative methods, history of science, and periodic analyses of the state of the industry to studies of science policy is suggested by this research.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02017911
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  • 8
    Electronic Resource
    Electronic Resource
    Rate of growth of literature in geoscience from computerized databases (1989)
    Springer
    Scientometrics 17 (1989), S. 15-38 
    Details
    ISSN: 1588-2861
    Source: Springer Online Journal Archives 1860-2000
    Topics: Information Science and Librarianship , Nature of Science, Research, Systems of Higher Education, Museum Science
    Notes: Abstract Computerized bibliographic databases have become sufficiently well developed and widely available to researchers that they have become potentially an important source of time series estimates of the growth of scientific literature. This paper uses the GEOREF3 database in such an application to estimation of the growth of geoscience. It is found by comparison with studies previously done from the hardcopy equivalents of GEOREF3 that the computer-derived time series can achieve results similar to their equivalents and do this more efficiently, more inexpensively and more comprehensively. Examples are given for geoscience as a whole, and for the literature related to several mineral commodities: iron ore, lead ore, nickel ore, petroleum and natural gas, radioactive minerals and ores, and zinc ore.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02017720
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  • 9
    Electronic Resource
    Electronic Resource
    The earth and planetary sciences in science during the twentieth century (1981)
    Springer
    Scientometrics 3 (1981), S. 349-362 
    Details
    ISSN: 1588-2861
    Source: Springer Online Journal Archives 1860-2000
    Topics: Information Science and Librarianship , Nature of Science, Research, Systems of Higher Education, Museum Science
    Notes: Abstract The earth and planetary sciences have shown remarkable changes during the present century. The relative coverage of earth and earth-planetary science in the journalScience (from the USA) was studied quantitatively at 5-year intervals for the period 1900–1976. Similar data, but more widely spaced, (10-year intervals) were obtained from the journalNature (from Great Britain) as corroboration. It was found in both journals that the relative attention given to earth science and to the combination of earth and planetary sciences dropped through the century to a low point about 1955. Thereafter the trend reversed, with both of these elements rising almost twice as rapidly as they had previously fallen. A comparison with previous work on the production of American periodical literature showed similar trends but a consistently greater proportion of coverage of these subjects inScience than that in the literature, suggesting that the former is reflecting a wider spectrum of impact of these subjects than is the latter. General science journals may be a better indicator of impact of a science than is the specialized literature. The similarity of results in the two journals indicates that the idea of patterns in world science is a valid one, in which the USA and Great Britain belong to a common pattern.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02017573
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  • 10
    Electronic Resource
    Electronic Resource
    The science-industry interface in the petroleum industry: Correlation of time series of indicators and their spectra, and growth modelling (1993)
    Springer
    Scientometrics 28 (1993), S. 237-286 
    Details
    ISSN: 1588-2861
    Source: Springer Online Journal Archives 1860-2000
    Topics: Information Science and Librarianship , Nature of Science, Research, Systems of Higher Education, Museum Science
    Notes: Abstract Petroleum production and exploration, used as petroleum industry indicators, and accumulation of petroleum-related geoscience literature, used as a science indicator, were compared by several means to gauge the degree of interaction between science and the industry in the period 1934–1990. Methods of comparison employed were: time domain correlations and crosscorrelation; correlations of spectra using coherence and crosspower spectra, and growth-modelling of the indicators. A fifty-year exploration cycle was found, beginning about 1945. Principal features of this cycle seem to coincide with prominent features in the time series for geoscience literature, and both of these variables are correlated with petroleum production. All three variables appear to have been determined ultimately by economic and political events which affected the petroleum industry. All of them show long-period cycles which coincide with the fourth Kondratiev cycle and the beginning of the fifth Kondratiev. The longest time series used (petroleum production in the United States, 1860–1990) shows long-period cycles matching the third, fourth and fifth Kondratiev cycles.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02026510
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