Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Chemistry  (6)
  • Salinity tolerance  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Photoautotrophic tobacco cells adapted to grow at high salinity (1997)
    Springer
    Plant cell reports 16 (1997), S. 495-502 
    Details
    ISSN: 1432-203X
    Keywords: Photoautrophic cultures ; Salinity tolerance ; Photosynthesis ; Starch ; Sucrose ; Glucose ; Fructose
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Photoautotrophic tobacco (Nicotiana tabacum var. Wisconsin 38) cell cultures were gradually adapted to grow in media containing the normally inhibitory concentration of 20 g l−1 NaCl. Both salt-adapted cultures maintained in 20 g l−1 NaCl (P20) and salt-unadapted (P0) cultures demonstrated similar chloroplast morphology and similar growth characteristics on a dry weight basis, but P20 cells showed reduced growth on a fresh weight basis compared to P0 cells. Compared to P0 cells, intracellular sucrose levels were significantly higher in P20 cells while starch levels in P0 cells were significantly higher than in P20 cells. Levels of intracellular and extracellular reducing sugars, and chlorophyll accumulated to the same degree in P20 and P0 cells, but accumulation was delayed by approximately 13 days in P20 cells. O2 evolution and14[CO2] fixation was more resistant to inhibition by NaCl in P20 cells than in P0 cells. However, significant changes in the abundance of thylakoid membrane proteins could not be demonstrated between P20 and P0 cells although higher levels of Rubisco on a per milligram chlorophyll basis were observed in P0 compared to P20 chloroplasts.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01092773
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Photoautotrophic tobacco cells adapted to grow at high salinity (1997)
    Springer
    Plant cell reports 16 (1997), S. 495-502 
    Details
    ISSN: 1432-203X
    Keywords: Key words Photoautrophic cultures ; Salinity tolerance ; Photosynthesis ; Starch ; Sucrose ; Glucose ; Fructose
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Photoautotrophic tobacco (Nicotiana tabacum var. Wisconsin 38) cell cultures were gradually adapted to grow in media containing the normally inhibitory concentration of 20 g l–1 NaCl. Both salt-adapted cultures maintained in 20 g l–1 NaCl (P20) and salt-unadapted (P0) cultures demonstrated similar chloroplast morphology and similar growth characteristics on a dry weight basis, but P20 cells showed reduced growth on a fresh weight basis compared to P0 cells. Compared to P0 cells, intracellular sucrose levels were significantly higher in P20 cells while starch levels in P0 cells were significantly higher than in P20 cells. Levels of intracellular and extracellular reducing sugars, and chlorophyll accumulated to the same degree in P20 and P0 cells, but accumulation was delayed by approximately 13 days in P20 cells. O2 evolution and 14[CO2] fixation was more resistant to inhibition by NaCl in P20 cells than in P0 cells. However, significant changes in the abundance of thylakoid membrane proteins could not be demonstrated between P20 and P0 cells although higher levels of Rubisco on a per milligram chlorophyll basis were observed in P0 compared to P20 chloroplasts.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01092773
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Incipient fluidization condition for a centrifugal fluidized bed (1985)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 31 (1985), S. 999-1009 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A model has been proposed for the condition of incipient fluidization in a centrifugal fluidized bed. The model is based on the balance between the overall forces, including the centrifugal and fluid frictional forces, exerted on the fluidized particles and the overall effective weight of the particles. Equations have been derived from the model for predicting the critical fluidizing velocity and the maximum pressure differential (or pressure drop) through the centrifugal bed. A series of experiments was carried out with different solid particles, bed rotational speeds, and bed heights. The resultant data for the critical fluidizing velocity and the maximum pressure drop of the bed indicate that the proposed model is valid and the derived equations are of practical use.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690310617
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Study of coal gasification in an experimental fluidized bed reactor (1986)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 32 (1986), S. 17-28 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Thermal gasification has been proposed as one technical option for the conversion of coal to gaseous fuels and/or chemicals to supplement supplies presently derived from petroleum and natural gas. In the present study, a bench-scale fluidized bed reactor was used for the gasification of coal with steam as the fluidizing medium. A mixture of sand and limestone used as the bed material made it possible to gasify a caking coal without the problem of agglomeration. The gas composition and yield of the hydrogen-rich product gas were studied as a function of temperature.To study the heterogeneous reactions taking place in the reactor and also the transient behavior of the system, a mathematical model was developed. The model assumed a reaction mechanism that accounted for the devolatilization of coal, cracking of volatiles, char gasification, and the water-gas shift reaction. Both the dynamic behavior and steady state performance of the gasifier were simulated based on the model. The steady state results of the simulation were compared with the experimental data. This comparison enabled us to ascertain that the proposed reaction mechanism and dynamic model predicted the correct trends.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690320104
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Fundamental modeling in anionic polymerization processes (1990)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 39 (1990), S. 2395-2417 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The anionic solution polymerization of butadiene was studied employing both batch and continuous reactor operations with n-butyllithium (n-BuLi) initiator, tetramethylethylenediamine (TMEDA) modifier, and hexane solvent. A model was proposed that described the kinetics as a function of both the fully modified and unmodified regressed rate data. Using the proposed kinetic model, the conversion, vinyl structure, and heterogeneity index of polymers produced for a series of continuous runs were successfully predicted. The model was used to simulate several process configurations.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1990.070391115
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    The reaction engineering of the anionic polymerization of isoprene (1993)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 47 (1993), S. 1589-1599 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The anionic solution polymerization of isoprene with n-butyllithium (n-BuLi) initiator and tetramethylethylenediame (TMEDA) modifier or n-butyllithium (n-BuLi)initiator and tripiperidinophosphine (TPPO) modifier was studied and kinetic and reactor models are proposed for both systems. Reactor conversion, molecular weight distribution, and polymer glass transition temperature had been calculated from the model and compared favorably to actual data for various combinations of reactor system and operating conditions. Simulations of the models can be used to design reactor systems, and predict polymer properties of a large-scale operation from results of small-scale batch reactor runs. © 1993 John Wiley & Sons, Inc.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1993.070470907
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Modelling studies of the controlled anionic copolymerization of butadiene and styreneDedicated to Professor Maurice Morton to commemorate the establishment of the Maurice Morton Institute of Polymer Science at the University of Akron. (1994)
    New York, NY [u.a.] : Wiley-Blackwell
    Polymer International 33 (1994), S. 151-159 
    Details
    ISSN: 0959-8103
    Keywords: anionic copolymerization ; modelling studies ; styrene ; butadiene ; polymerization ; Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The anionic polymerization of isoprene with n-butyl lithium and polar modifier such as TMEDA and tripiperdinophosphine oxide were studied and kinetic and reactor models are proposed for these systems. Reactor conversion, molecular weight distribution and polymer glass transition temperature had been calculated from the model and compared favorably to the actual data for various combinations of reactor systems and operating conditions. Simulations of the model can be used to design reactor systems and predict polymer properties of large-scale operations from results of small scale batch reactor runs.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pi.1994.210330205
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Determination of the crater radius as a function of time of a shaped charge jet that penetrates water (1996)
    Weinheim : Wiley-Blackwell
    Propellants, Explosives, Pyrotechnics 21 (1996), S. 64-69 
    Details
    ISSN: 0721-3115
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The new technique of measuring radial expansion of a crater as a function of time on a shaped charge jet that penetrates water is explained in this paper. Radial expansion of the crater in the frame of experimentation can, in this case, be easily described with a modified Bernoulli equation under the condition that target strength is weak, the initial radial crater velocity is equal to the axial crater velocity and that the pressure p diminishes from the initial impact pressure p0, with the ratio of the area a to the initial area a0 of the impacting jet.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prep.19960210203
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...