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  • 1
    Digitale Medien
    Digitale Medien
    Removal of 1-butanethiol from diesel oil by red mud (1988)
    s.l. : American Chemical Society
    Industrial & engineering chemistry research 27 (1988), S. 2101-2104 
    Details
    ISSN: 1520-5045
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/ie00083a024
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  • 2
    Digitale Medien
    Digitale Medien
    Integrated Front-End Radar Receivers at Ka-Band (2000)
    Springer
    International journal of infrared and millimeter waves 21 (2000), S. 421-428 
    Details
    ISSN: 1572-9559
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract This paper describes the Integrated Finline Front-end Radar Receivers at Ka-Band. The Front-receivers developed for Radar applications include combining of finline components on a single MIC substrate with various planar transmission lines. The integrated systems so developed have better noise figure and control over phase and gain imbalances as compared to discrete component systems. Two types of Integrated Front-ends Radar receivers are described here. The developed systems are highly compact and reliable.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1023/A:1006607114550
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  • 3
    Digitale Medien
    Digitale Medien
    Trichoderma viride as a mycoparasite ofAspergillus spp. (1980)
    Springer
    Plant and soil 57 (1980), S. 131-135 
    Details
    ISSN: 1573-5036
    Schlagwort(e): Aspergillus ; Mycoparasitism ; Trichoderma ; Urban waste
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Summary Trichoderma viride was found to be parasitic on three species of Aspergillus. The mycoparasitism was characterized by frequent coiling, penetration and hyphal growth of the parasite inside the conidiophores of Aspergillus. The volatile and non-volatile metabolites ofT. viride, more or less, inhibited radial growth of all the testAspergillus spp.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02139649
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  • 4
    Digitale Medien
    Digitale Medien
    As(III) removal from aqueous solution by adsorption (1988)
    Springer
    Water, air & soil pollution 42 (1988), S. 373-386 
    Details
    ISSN: 1573-2932
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Energietechnik
    Notizen: Abstract The removal of As(III) from aqueous solutions at different concentrations, pH and temperatures by haematite has been carried out successfully. The maximum removal was found to be 96 % at concentration 13.34 μmol L−1, temperature 20 °C and pH 7.0. The process of uptake follows first-order adsorption rate expression and obeys the Langmuir's model of adsorption. The removal of As(III) by haematite is also partially diffusion controlled and mass transfer coefficients, diffusion coefficients and thermodynamic parameters have been determined to explain the results.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00279281
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  • 5
    Digitale Medien
    Digitale Medien
    Removal of chrome dye from aqueous solutions by fly ash (1988)
    Springer
    Water, air & soil pollution 37 (1988), S. 13-24 
    Details
    ISSN: 1573-2932
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Energietechnik
    Notizen: Abstract The ability of fly ash to remove Omega Chrome Red ME (a chrome dye, mostly used in textile industries) from water has been studied. It has been found that low adsorbate concentration, small particle size of adsorbent, low temperature, and acidic pH of the medium favor the removal of chrome dye from aqueous solutions. The dynamics of adsorbate transport from bulk to the solid phase has been studied at different temperatures in light of the adsorption of dye on the outer surface as well as diffusion within the pores of fly ash. The applicability of Langmuir isotherm suggests the formation of monolayer coverage of dye molecules on the outer interface of adsorbent. The thermodynamics of chrome dye-fly ash system indicates spontaneous and exothermic nature of the process. The pronounced removal of chrome dye in the acidic range may be due to the association of dye anions with the positively charged surface of the adsorbent.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00226476
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  • 6
    Digitale Medien
    Digitale Medien
    Fly ash for the treatment of Zn(II) rich effluents (1991)
    Springer
    The environmentalist 11 (1991), S. 217-224 
    Details
    ISSN: 1573-2991
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Energietechnik
    Notizen: Summary The ability of fly ash to remove Zn(II) from water by adsorption has been tested at different concentrations, temperatures and pH of the solution. It was found that low adsorbate concentration, small particle size of adsorbent and higher temperature favoured the removal of Zn(II) from aqueous solution. The Langmuir isotherm was used to represent the equilibrium data at different temperatures. The apparent heat of adsorption has been found to be 17.325 Kcal mol−1, which indicates the process to be endothermic. The uptake of Zn(II) is diffusion controlled and the mass transfer coefficient is 3.56 × 10−5 cm s −1.The maximum removal was noted at pH 7.5.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01263235
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  • 7
    Digitale Medien
    Digitale Medien
    Use of wollastonite for the treatment of Cu(II) rich effluents (1986)
    Springer
    Water, air & soil pollution 27 (1986), S. 287-296 
    Details
    ISSN: 1573-2932
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Energietechnik
    Notizen: Abstract The adsorption technique using wollastonite has been applied for the removal of Cu(II) from aqueous solutions. The low concentration, high temperature and alkaline pH favor the removal of Cu(II). The Langmuir isotherm was used to represent the equilibrium data at different temperatures. The apparent heat of adsorption has been found to be 5.926 Cal mol−1. The uptake of Cu(II) is diffusion controlled and the mass transfer coefficient is 3.6 × 10−5 cm s−1. The maximum removal of Cu(II) in alkaline medium has been explained on the basis of the uptake of hydrolyzed adsorbate species by the active surface sites of adsorbent.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00649410
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  • 8
    Digitale Medien
    Digitale Medien
    Defluoridation of water by adsorption on fly ash (1990)
    Springer
    Water, air & soil pollution 49 (1990), S. 51-61 
    Details
    ISSN: 1573-2932
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Energietechnik
    Notizen: Abstract The ability of fly ash to remove fluoride from water and wastewaters has been studied at different concentrations, times, temperatures and pH of the solution. The rate constants of adsorption, intraparticle transport, mass transfer coefficients and thermodynamic parameters have been calculated at 30, 40, and 50 °C. The empirical model has been tested at various concentration for the present system. The removal of fluoride is favorable at low concentration, high temperature and acidic pH.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00279509
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