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  • 1
    Series available for loan
    Series available for loan
    Cruise report of the joint chilean-german-italian magellan "Victor Hensen" campaign in 1994 : [17. October - 25. November 1994] (1996)
    Bremerhaven : Alfred-Wegener-Inst. für Polar- und Meeresforschung
    Associated volumes
    Details Availability
    Call number: ZSP-168-190
    In: Berichte zur Polarforschung
    Type of Medium: Series available for loan
    Pages: 113 S. : Ill., graph. Darst., Kt.
    ISSN: 0176-5027
    Series Statement: Berichte zur Polarforschung 190
    URL: http://hdl.handle.net/10013/epic.10191
    Language: English
    Location: AWI Reading room
    Branch Library: AWI Library
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  • 2
    Electronic Resource
    Electronic Resource
    MD Study of the Endohedral Potassium Ion Fullerene Cluster (K〈sup〉+〈/sup〉C〈sub〉60〈/sub〉)〈sub〉7〈/sub〉 (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Solid state phenomena Vol. 140 (Oct. 2008), p. 81-88 
    Details
    ISSN: 1662-9779
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Physics
    Notes: The nanosystem composed of only as few as seven endohedral fullerene K+@C60molecules was simulated using the MD method. The interaction was taken to be the full site-sitepairwise additive Lennard-Jones (LJ) potential, which generates both translational and anisotropicrotational motions of each endohedral fullerene. The atomically detailed MD simulations allow thedynamics of the motion of K+@C60 molecule inside the cluster to be analysed. The radialdistribution function, the mean square displacement, the translational velocity correlation functionsand the Lindemann index of endohedral fullerene have been calculated for several energies of thenanosystem. The solid/liquid phase transition and the existence of the liquid phase in theendohedral potassium ion fullerene cluster was found
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/24/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.140.81.pdf
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  • 3
    Electronic Resource
    Electronic Resource
    Interaction Between Porous Graphite Substrate and Liquid or Semi-Liquid Aluminium Alloys Containing Titanium (1996)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 217-222 (May 1996), p. 153-158 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/01/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.217-222.153.pdf
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  • 4
    Electronic Resource
    Electronic Resource
    Ground Stabilization for foundation and excavation construction in Florida karst topography (1993)
    Springer
    Environmental geology 22 (1993), S. 308-313 
    Details
    ISSN: 1432-0495
    Keywords: Florida karst ; Generating station construction ; Ground modification techniques
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract The construction of additional facilities at the Florida Power Corporation's Crystal River Energy Complex required an extensive stabilization program to construct foundations for approximately one half mile of cooling towers. This paper presents an overview of the techniques and methods used in the construction of additional facilities at the Crystal River Generating Station. Excavations for intake and discharge structures were to be more than 20 ft below the water table. Cooling tower foundations were constructed on extensively solutioned Florida limerock located on the central Gulf Coast of Florida. Hybrid ground modification techniques were used to stabilize soft or loose soils and solution features in the underlying limerock, allowing mat and spread footing foundations to be used for most of the facility. The ground modification techniques were used to detect, collapse, densify, and fill solution features below the structure foundations. The bearing capacity after ground modification was verified by field load tests. Subsurface investigations indicated that sheet pile excavations with grouted seals were the optimal technique for cofferdam excavations in the limerock formation. Existing collapsed caverns were encountered during construction of the cofferdam for the intake structure and the adjacent discharge structure, requiring a fast-track design change, considerable field coordination, and daily modifications to accommodate the varied conditions encountered. Tied-back soldier pile cofferdam construction was combined with grouting, underwater excavation, and a massive, unreinforced, concrete tremie slab with grouted anchors, and installed off a barge to provide a dewatered excavation. This project involved the use of hybrid soil-rock anchors to anchor one of the largest continuous placement tremie seals installed in Florida. Other excavations used sheeting and grouting of the underlying limerock formation to provide a dewatered excavation. Ground modification techniques were used to treat a filled cavern discovered in the corner of one discharge structure. The entire construction of this facility was confined to a narrow work area by existing wetlands and the generating station discharge canal. Strict environmental restrictions required by the regulatory agencies to prevent impacts to the surrounding area were imposed on this project.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00767502
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  • 5
    Electronic Resource
    Electronic Resource
    A strictly anaerobic nitrate-reducing bacterium growing with resorcinol and other aromatic compounds (1992)
    Springer
    Archives of microbiology 158 (1992), S. 48-53 
    Details
    ISSN: 1432-072X
    Keywords: Obligate nitrate reducer ; Resorcinol hydrolysis ; Aromatic compounds ; Alcaligenes denitrificans ; Anaerobic degradation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract With resorcinol as sole source of energy and organic carbon, two stains of gram-negative, nitrate-reducing bacteria were isolated under strictly anaerobic conditions. Strain LuBRes1 was facultatively anaerobic and catalase- and superoxide dismutase-positive. This strain was affiliated with Alcaligenes denitrificans on the basis of substrate utilization spectrum and peritrichous flagellation. Strain LuFRes1 could grow only under anaerobic conditions with oxidized nitrogen compounds as electron acceptor. Cells were catalase-negative but superoxide dismutase-positive. Since this strain was apparently an obligate nitrate reducer, it could not be grouped with any existing genus. Resorcinol was completely oxidized to CO2 by both strains. Neither an enzyme activity reducing or hydrolyzing the resorcinol molecule, nor an acyl-CoA-synthetase activating resorcylic acids or benzoate was detected in cell-free extracts of cells grown with resorcinol. In dense cell suspensions, both strains produced a compound which was identified as 5-oxo-2-hexenoic acid by mass spectrometric analysis. This would indicate a direct, hydrolytic cleavage of the resorcinol nucleus without initial reduction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00249065
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  • 6
    Electronic Resource
    Electronic Resource
    Complete anaerobic oxidation of hydroquinone by Desulfococcus sp. strain Hy5: indications of hydroquinone carboxylation to gentisate (1994)
    Springer
    Archives of microbiology 162 (1994), S. 131-135 
    Details
    ISSN: 1432-072X
    Keywords: Anaerobic degradation ; Aromatic compounds ; Carboxylation ; Sulfate-reducing bacteria
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The sulfate-reducing strain Hy5 was able to grow with hydroquinone as sole source of carbon and energy. In experiments with dense cell suspensions, several indications were found that gentisate was the first intermediate in anaerobic degradation of hydroquinone: (1) degradation of hydroquinone was accelerated by addition of bicarbonate; (2) cell suspensions grown with hydroquinone oxidized gentisate at a rate similar to that of suspensions grown with gentisate, whereas the latter were not able to degrade hydroquinone in the presence of chloramphenicol; (3) in SDS-PAGE analysis of cell-free extracts of strain Hy5, two additional protein bands were found after growth with hydroquinone that were not detected in cells grown with gentisate, probably representing a hydroquinone carboxylating enzyme. A corresponding enzyme activity could not be detected. In cell-free extracts of hydroquinone-grown strain Hy5, the specific acyl-CoA ligase activity with gentisate as substrate was detected at 70 nmol x mg-1 x min-1. Gentisyl-CoA was enzymatically reduced to several unidentified nonaromatic products in the presence of dithionite-reduced methyl viologen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00264386
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  • 7
    Electronic Resource
    Electronic Resource
    Complete anaerobic oxidation of hydroquinone by Desulfococcus sp. strain Hy5: indications of hydroquinone carboxylation to gentisate (1994)
    Springer
    Archives of microbiology 162 (1994), S. 131-135 
    Details
    ISSN: 1432-072X
    Keywords: Key words     Anaerobic degradation ; Aromatic compounds ; Carboxylation ; Sulfate-reducing bacteria
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract      The sulfate-reducing strain Hy5 was able to grow with hydroquinone as sole source of carbon and energy. In experiments with dense cell suspensions, several indications were found that gentisate was the first intermediate in anaerobic degradation of hydroquinone: (1) degradation of hydroquinone was accelerated by addition of bicarbonate; (2) cell suspensions grown with hydroquinone oxidized gentisate at a rate similar to that of suspensions grown with gentisate, whereas the latter were not able to degrade hydroquinone in the presence of chloramphenicol; (3) in SDS-PAGE analysis of cell-free extracts of strain Hy5, two additional protein bands were found after growth with hydroquinone that were not detected in cells grown with gentisate, probably representing a hydroquinone carboxylating enzyme. A corresponding enzyme activity could not be detected. In cell-free extracts of hydroquinone-grown strain Hy5, the specific acyl-C oA ligase activity with gentisate as substrate was detected at 70 nmol × mg–1× min–1. Gentisyl-CoA was enzymatically reduced to several unidentified nonaromatic products in the presence of dithionite-reduced methyl viologen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002030050114
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  • 8
    Electronic Resource
    Electronic Resource
    Hydroquinone degradation via reductive dehydroxylation of gentisyl-CoA by a strictly anaerobic fermenting bacterium (1994)
    Springer
    Archives of microbiology 161 (1994), S. 25-32 
    Details
    ISSN: 1432-072X
    Keywords: Anaerobic degradation ; Aromatic compounds ; Gentisate ; Carboxylation ; Reductive elimination ; Benzoyl-CoA pathway
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Anaerobic degradation of hydroquinone was studied with the fermenting bacterium strain HQGö1. The rate of hydroquinone degradation by dense cell suspensions was dramatically accelerated by addition of NaHCO3. During fermentation of hydroquinone in the presence of 14C-Na2CO3 benzoate was formed as a labelled product, indicating an initial ortho-carboxylation of hydroquinone to gentisate. Gentisate was activated to the corresponding CoA-ester in a CoA ligase reaction at a specific activity of 0.15 μmol x min−1 x mg protein−1. Gentisyl-CoA was reduced to benzoyl-CoA with reduced methyl viologen as electron donor by simultaneous reductive elimination of both the ortho and meta hydroxyl group. The specific activity of this novel gentisyl-CoA reductase was 17 nmol x min−1 x mg protein−1. Further degradation to acetate was catalyzed by enzymes which occur also in other bacteria degrading aromatic compounds via benzoyl-CoA.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00248890
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  • 9
    Electronic Resource
    Electronic Resource
    The Application of Some Probability Density Functions on Heterogeneous Nucleation (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 508 (Mar. 2006), p. 425-430 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Probability density functions of known statistical distributions (Gauss, Weibull, lognormal) have been used to describe the nucleation of grains during solidification. Empirical nucleation data for solidification of cast iron follow a model based on the lognormal distribution
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/12/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.508.425.pdf
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  • 10
    Electronic Resource
    Electronic Resource
    Quality Changes in Fresh-cut Pear Slices as Affected by Cultivar, Ripeness Stage, Fruit Size, and Storage Regime (2000)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 65 (2000), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Fresh-cut fruit slices prepared from partially ripened Bartlett pears had longer shelf life than those from Bosc, Anjou, and Red Anjou pears. Pear fruit ripeness, based on flesh firmness of 44 to 58 N, is optimal for fresh-cut pear slice processing. Pear slices derived from smaller size fruit (122 to 135 g) have greater cut surface discoloration and deteriorate more rapidly than slices derived from larger fruit (152 g). Recently harvested Bartlett pear fruit and whole pears held at –1 °C in a controlled atmosphere of 2%O2+ 98%N2 had a longer post-cutting shelf life than those held in air at –1 °C for the same duration. Cut surface browning, flesh softening, and surface dehydration of the slice cut surface were all contributors to loss of product quality.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.2000.tb16044.x
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