GLORIA

GEOMAR Library Ocean Research Information Access

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
  • Articles  (16)
Document type
Source
Keywords
Publisher
Years
Journal
Topic
  • 1
    Electronic Resource
    Electronic Resource
    The chemistry of L-ascorbic and D-isoascorbic acids. 2. R and S glyceraldehydes from a common intermediate (1988)
    s.l. : American Chemical Society
    The @journal of organic chemistry 53 (1988), S. 6005-6009 
    Details
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jo00261a004
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    CHANGES IN HYDROLOGIC RESPONSE DUE TO STREAM NETWORK EXTENSION VIA LAND DRAINAGE ACTIVITIES (2003)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the American Water Resources Association 39 (2003), S. 0 
    Details
    ISSN: 1752-1688
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: : The objective of this work is to determine the effects of extension of a stream network through land drainage activities during the late 1800s on the hydrologic response of a watershed. The Mackinaw River Basin in Central Illinois was chosen as the focus and the pre-land and post-land drainage activity hydrologic responses were obtained through convolution of the hill slope and channel responses and compared. The hill slope response was computed using the kinematic wave model and the channel response was determined using the geomorphologic instantaneous unit hydrograph method. Our hypothesis was that the hydrologic response of the basin would exhibit the characteristic effects of settlement (i.e., increases in peak discharges and decreases in times to peak). This, indeed, is what occurred; however, the increase in peak discharges diminishes as scale increases, leaving only the decrease in times to peak. At larger scales, the dispersive effects of the longer hill slope lengths in the pre-settlement scenario seem to balance the depressive effects of the longer path lengths in the post-settlement scenario, thus the pre-settlement and post-settlement peak discharges are approximately equivalent. At small scales, the dispersion caused by the hill slope is larger in the pre-settlement case; thus, the post-settlement peak discharges are greater than the pre-settlement.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1752-1688.2003.tb04438.x
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    A probability-weighted moment test to assess simple scaling (1994)
    Springer
    Stochastic environmental research and risk assessment 8 (1994), S. 173-183 
    Details
    ISSN: 1436-3259
    Keywords: Probability weighted moment ; scaling in rainfall ; stable distribution
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Energy, Environment Protection, Nuclear Power Engineering , Geography , Geosciences
    Notes: Abstract We present a statistically robust approach based on probability weighted moments to assess the presence of simple scaling in geophysical processes. The proposed approach is different from current approaches which rely on estimation of high order moments. High order moments of simple scaling processes (distributions) may not have theoretically defined values and consequently, their empirical estimates are highly variable and do not converge with increasing sample size. They are, therefore, not an appropriate tool for inference. On the other hand we show that the probability weighted moments of such processes (distributions) do exist and, hence, their empirical estimates are more robust. These moments, therefore, provide an appropriate tool for inferring the presence of scaling. We illustrate this using simulated Levystable processes and then draw inference on the nature of scaling in fluctuations of a spatial rainfall process.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01587233
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Organizational strategy and tacit collusion in oligopoly with agency (1995)
    Springer
    Computational & mathematical organization theory 1 (1995), S. 9-38 
    Details
    ISSN: 1572-9346
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract We study a model that integrates organizational structure and agency withdynamic price competition in oligopoly. Workers in different levels of the organizational structure have asymmetric information and heterogeneous objectives; i.e., there are agency conflicts within the firm. The organizational strategy of the firm is to determinesequentially the decision power relating to price and non-price competition instruments at each level. We examine the equilibrium organizational and competitive strategy of firms in a duopoly, and characterize the extent of noncooperative tacit collusion (with respect to price and non-price competition) that is feasible. We identify two sets of sufficient conditions that guarantee, (i) the monopoly solution is sustainable at any discount factor (rate of impatience of the workers), or (ii) the monopoly solution is not sustainable for any level of the discount factor. Interestingly, tacit collusion may be feasible when either the agency problem is non-existentor very severe; i.e., firm profits in equilibrium may be non-monotone in the extent of the agency conflict. Our analysis indicates that intrafirm learning and agency will have a stronger impact on feasible tacit collusion in markets where non-price competition plays a strong role. Moreover, there is an intimate connection between the firm's organizational strategy and the extent of tacit collusion with the (industry) business cycle.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01307826
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Phosphomonoesterases in the 2 sexes of the root-knot nematode,Meloidogyne lucknowica Singh, 1969 (1979)
    Springer
    Cellular and molecular life sciences 35 (1979), S. 335-336 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The 2 phosphomonoesterases of the root-knot nematode were colorimetrically determined. Alkaline phosphatase activity was observed to be lower than the acid phosphatase activity. Sex related trends were clearly seen in the enzyme levels of the 2 sexes of thenematode. Alkaline phosphatase level differed 28.76%, while acid phosphatase level differed 60.36% in the 2 sexes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01964336
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Acute intravascular haemolysis following exchange transfusion with G-6-PD deficient blood (1994)
    Springer
    European journal of pediatrics 153 (1994), S. 98-99 
    Details
    ISSN: 1432-1076
    Keywords: Exchange transfusion Glucose-6-phosphate dehydrogenase Hyperbilirubinaemia ; Intravascular haemolysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A neonate with hyperbilirubinaemia who developed massive intravascular haemolysis following exchange transfusion with glucose-6-phosphate dehydrogenase deficient blood is described. It is recommended that in areas endemic for this enzyme deficiency the donor blood should be screened before being used for exchange transfusion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01959216
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Acute intravascular haemolysis following exchange transfusion with G-6-PD deficient blood (1994)
    Springer
    European journal of pediatrics 153 (1994), S. 98-99 
    Details
    ISSN: 1432-1076
    Keywords: Key words: Exchange transfusion – Glucose-6-phosphate dehydrogenase – Hyperbilirubinaemia – Intravascular haemolysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. A neonate with hyperbilirubinaemia who developed massive intravascular haemolysis following exchange transfusion with glucose-6-phosphate dehydrogenase deficient blood is described. It is recommended that in areas endemic for this enzyme deficiency the donor blood should be screened before being used for exchange transfusion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01959216
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Protective effects of lazaroids against oxygen-free radicals induced lysosomal damage (1994)
    Springer
    Molecular and cellular biochemistry 136 (1994), S. 125-129 
    Details
    ISSN: 1573-4919
    Keywords: oxygen free radicals ; lysosomes ; lazaroids ; acid phosphatase ; malondialdehyde
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract Lipid peroxidation of membranes by oxygen free radicals has been implicated in various disease states. Different antioxidants and iron chelators have been used to reduce lipid peroxidation. Lazaroids have been used for the acute treatment of central nervous system disorders such as trauma and ischemia wherein lipid peroxidative processes take place. In this study we evaluated the effect of lazaroids (U-785 18F and U-74389F) on the release of acid phosphatase activity and formation of malondialdehyde (MDA) in rat liver lyosomes subjected to exogenously generated oxygen free radicals. There was a significant increase in the acid phosphatase release and MDA formation in the presence of oxygen free radicals. This was prevented by both the lazaroids. In a separate study the effect of lazaroid U-74389F was seen on the zymosan-stimulated polymorphonuclear (PMN) leukocyte-derived chemiluminescence. The PMN leukocyte chemiluminescent activity was attenuated by the lazaroid in a dose-dependent manner. These studies suggest that lazaroids may inhibit lipid peroxidation and stabilize the membrane.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00926072
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Soil transformation of wheat and corn metabolites mboa and DIM2BOA into aminophenoxazinones (1993)
    Springer
    Journal of chemical ecology 19 (1993), S. 2453-2461 
    Details
    ISSN: 1573-1561
    Keywords: DIMBOA ; MBOA ; DIM2BOA ; M2BOA ; 2-amino-7-methoxy-3H-phenoxazin-3-one ; 2-amino-4,6,7-trimethoxy-3H-phenoxazin-3-one ; corn ; wheat ; soil microbial transformation ; phytotoxicity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The defensive cyclic hydroxamates 7-methoxy-2,4-dihydroxy-1,4(2H)-benzoxazin-3-one (DIMBOA) and 7,8-dimethoxy-2,4-dihydroxy-1,4(2H)-benzoxazin-3-one (DIM2BOA) of wheat and corn are transformed in nonsterile soil, via 6-methoxy-2(3H)-benzoxazolone (MBOA) and 6,7-dimethoxy-2(3H)-benzoxazolone (M2BOA) respectively, into 2-amino-7-methoxy-3H-phenoxazin-3-one and 2-amino-4,6,7-trimethoxy-3H-phenoxazin-3-one. The soil transformation is similar of that undergone by the rye metabolite 2(3H)-benzoxazolone (BOA) into 2-amino-3H-phenoxazin-3-one. The transformations to phenoxazinones are not observed in sterile soil. The 2-amino-3H-phenoxazin-3-one inhibits barnyard grass radicle elongation, but the methoxylated aminophenoxazinones are not significantly inhibitory.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00980682
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Mineralization of guanidine derivatives in soils (1999)
    Springer
    Nutrient cycling in agroecosystems 53 (1999), S. 133-138 
    Details
    ISSN: 1573-0867
    Keywords: guanidine derivatives ; mineralization ; N sources ; wheat emergence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Mineralization of eleven guanidine derivatives was studied in three soils of varying levels of microbial biomass C to evaluate their potential as fertilizer N sources. The guanidines mineralized slowly. Their mineralization generally started after a lag phase which increased with concentration. Mineralization of dimethylguanidine sulphate was the fastest (7–63 days) and tetramethyl guanidine slowest (〉98 days) in all soils and at concentrations equivalent to 100 and 500 μg N g-1 soil. The mineralization rates increased with concentration except for guanidine hydrochloride, guanidine thiocyanate, nitroguanidine, and tetramethyl guanidine. They mineralized faster in soils with higher microbial biomass C. The mineralization of guanidines may be classified into four groups: rapidly mineralized (dimethyl guanidine sulphate); mineralized after a lag phase (guanidine sulphate, guanidine carbonate, guanidine acetate, guanidine hydrochloride and guanidine thiocyanate); a fraction of applied N rapidly mineralized with the gradual mineralization of the remaining N (guanidine nitrate, aminoguanidine nitrate, aminoguanidine carbonate); and very slowly mineralized (nitroguanidine, tetramethyl guanidine). None of the guanidines inhibited germination of wheat and excepting guanidine hydrochloride which reduced growth or guanidine thiocyanate that killed seedling, other guanidines increased the dry matter production.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1009735003250
    Location Call Number Limitation 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...