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  • Articles  (177)
  • Latest Papers from Table of Contents or Articles in Press  (158)
  • Articles: DFG German National Licenses  (19)
  • Elsevier  (124)
  • American Geophysical Union  (23)
  • Blackwell Publishing Ltd  (19)
  • De Gruyter
  • Oxford University Press
  • Society of Petroleum Engineers
  • 2005-2009
  • 1990-1994  (111)
  • 1985-1989
  • 1980-1984  (66)
  • 1950-1954
  • 1994  (111)
  • 1984  (66)
  • Geosciences  (83)
  • Energy, Environment Protection, Nuclear Power Engineering  (43)
  • Medicine  (41)
  • Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition  (13)
  • Mathematics  (9)
  • Electrical Engineering, Measurement and Control Technology  (2)
  • Nature of Science, Research, Systems of Higher Education, Museum Science  (1)
Collection
  • Articles  (177)
Source
  • Latest Papers from Table of Contents or Articles in Press  (158)
  • Articles: DFG German National Licenses  (19)
Publisher
Years
  • 2005-2009
  • 1990-1994  (111)
  • 1985-1989
  • 1980-1984  (66)
  • 1950-1954
Year
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Topic
  • 1
    Electronic Resource
    Electronic Resource
    Filtration Experiments of Henry Darcy (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 32 (1994), S. 0 
    Details
    ISSN: 1745-6584
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-6584.1994.tb00926.x
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    Paper (German National Licenses)
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  • 2
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    An intercomparison of carbon monoxide, nitric oxide, and hydroxyl measurement techniques: Overview of results (1984)
    American Geophysical Union
    Details
    Publication Date: 1984-01-01
    Print ISSN: 0148-0227
    Electronic ISSN: 2156-2202
    Topics: Geosciences
    Published by American Geophysical Union
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    PAPER CURRENT
  • 3
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    Retinoic acid inhibition of thyroxine binding to human transthyretin (1994)
    Elsevier
    Details
    Publication Date: 1994-01-01
    Print ISSN: 0304-4165
    Electronic ISSN: 1872-8006
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Published by Elsevier
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    PAPER CURRENT
  • 4
    Electronic Resource
    Electronic Resource
    Ground Water Monitoring Statistics Update: Part II: Nonparametric Prediction Limits (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water monitoring & remediation 14 (1994), S. 0 
    Details
    ISSN: 1745-6592
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: Nonparametric prediction limits can be useful statistical tools for ground water monitoring at facilities regulated under RCRA Subtitle C. Subtitle D. and similar regulations. New, exact tables arc presented for both “1 of m” plans (m chances to gel one observation inbounds at each of r monitoring wells to avoid a statistically significant increase) and “California” plans (first or all of the next m-1 observations inbounds at each well). The tables provide per-constituent significance levels (false positive rates) as a function of the background sample size n. m. r, the prediction limit (the largest or the next to largest, background observation), and the confirmatory resampling plan selected.When used in a monitoring program, future observations from several wells are compared with a prediction limit obtained from a common background sample. The table significance levels therefore depend critically on having IID (independent and identically distributed) observations. In particular, the false positive rate computations are not valid, and the procedures should not be used, with constituents whose measurements exhibit inherent spatial or systematic temporal variability.Recent U.S. EPA guidance explicitly encourages controlling facility-wide false positive rates over both constituents and wells. Nonparametric prediction limits, particularly with California resampling plans, will have greater difficulty in meeting the new. lower per-constituent false positive rate goals than previous ones, especially if many constituents are involved. Nonetheless, nonparametric prediction limits remain superior to other commonly used procedures for dealing with data with high proportions of nondctects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-6592.1994.tb00494.x
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  • 5
    Electronic Resource
    Electronic Resource
    Growth Response of Penaeus setiferus to Four Commercial Feeds Under Controlled Laboratory Conditions (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the World Aquaculture Society 25 (1994), S. 0 
    Details
    ISSN: 1749-7345
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Shrimp farmers have access to and have evaluated a diverse number of shrimp species; however, due to culture and market considerations three penaeid species (Penaeus monodon, P. orientalis and P. vunnamei) account for 80% of the world production (Weidner and Rosenbeny 1992). Although culture techniques for these species have been extensively studied and are relatively well established, they are not native to U.S. coastal waters and hence possess problems associated with the use of exotic species. Three native species P. aztecus. brown shrimp; P. duorarum, pink shrimp; and P. setiferus, white shrimp, support commercial fisheries along the Gulf states (Gulf of Mexico Fishery Management Council 1981). The commercial culture of these species would avoid the inherent problems associated with the culture of exotic species and allow shrimp farmers in the Caribbean basin to more effectively expand operations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-7345.1994.tb00825.x
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  • 6
    Electronic Resource
    Electronic Resource
    EDUCATION OF FUTURE GROUND-WATER PROFESSIONALS (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 32 (1994), S. 0 
    Details
    ISSN: 1745-6584
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-6584.1994.tb00910.x
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  • 7
    Electronic Resource
    Electronic Resource
    Natural Biological Attenuation of Benzene in Ground Water Beneath a Manufacturing Facility (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 32 (1994), S. 0 
    Details
    ISSN: 1745-6584
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: Subsurface unsaturated soils and ground water directly beneath a manufacturing site have been shown to contain benzene. The vadose zone appears to be the current source for benzene to the aquifer. Although the ground water contains several mg/1 of contamination in the area immediately beneath the source, benzene was not detected in monitoring wells approximately 400 feet downgradient. Based upon the length of time benzene has been present in the ground water, as well as the permeability of the aquifer, physical processes alone such as adsorption and advection/dispersion are unlikely to account for the observed attenuation. Results from this investigation indicated the attenuation was primarily due to the natural biological processes occurring within the aquifer.Evidence for the natural bioremediation of benzene from the ground water included: (1) analysis of ground-water chemistry, (2) laboratory studies demonstrating benzene biodegradation in aquifer samples, and (3) computer simulations examining contaminant transport. Laboratory studies indicated that under conditions similar to those encountered in the ground water, benzene was degraded to carbon dioxide by the naturally occurring microorganisms. The aerobic degradation of benzene in aquifer samples was quite rapid, with the time for 50% disappearance of the parent compound ranging from 4 to 14 days. In situ analyses of the ground water indicated significant levels of dissolved oxygen throughout the aquifer. Thus, the availability of oxygen should not limit the aerobic biodegradation of benzene. However, benzene was also shown to degrade under anaerobic conditions in microcosms prepared with aquifer material. Computer model simulations were also conducted to examine the processes influencing the transport of benzene in the aquifer. Results from the model simulations indicated biodegradation was the dominant process influencing attenuation of the contaminant.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-6584.1994.tb00636.x
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  • 8
    Electronic Resource
    Electronic Resource
    Attenuation and Biodegradation of Chlorophenols in Ground Water at a Former Wood Treating Facility (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 32 (1994), S. 0 
    Details
    ISSN: 1745-6584
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: This communication describes novel methods to measure site-specific sorption data, and to determine if biodegradation of pentachlorophenol (PCP) in complex technical-grade formulations occurs at industrial facilities. Ground-water slurry samples containing between 0.012 and 230 mg/l PCP were collected from a former wood treating site, the liquid and solid fractions separated, and both fractions analyzed for PCP using selective ion monitoring to determine sorption coefficients (Kd(PCP)). Although field sorption coefficients could not be represented by simple Freundlich and Langmuir isotherms, an empirical hyperbolic function (Kd(PCP)) = 0.054 + 0.086/Caq) fit the isotherm (r 〉 0.99), demonstrating that for PCP 〉 10 mg/l, no measurable retardation occurred in the aquifer. Biodegradation of PCP in ground water was apparent when PCP concentrations were 〈 20 mg/1, while at higher concentrations, PCP in the technical-grade formulation appeared to break down less readily. The results imply that, at the plume periphery, PCP in the subsurface will be attenuated and degrade, while at higher concentrations (i.e., at the source), PCP is mobile, and more recalcitrant to degradation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-6584.1994.tb00639.x
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  • 9
    Electronic Resource
    Electronic Resource
    A Portable Air-Minipermeameter for Rapid In Situ Field Measurements (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 32 (1994), S. 0 
    Details
    ISSN: 1745-6584
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: Measurements of air-permeability in outcrops provide a means of obtaining numerous spatially distributed measurements for statistical analysis and subsequent parameterization of ground-water flow and transport modeling. The air-minipermeameters previously used for such studies generally consist of a compressed air source, rotameters, and diaphragm gauges. We present a lightweight syringe-based air-minipermeameter (LSAMP) design that is significantly more portable than previous instruments. The prototype model is contained in a 12.7 × 15.2 × 23 centimeter (5 × 6 × 9 inch) electrical box and weighs approximately 2 kilograms. The prototype LSAMP has a sampling range of 0.5 to 200 darcys. Individual measurements in this range require less than one minute. Permeability measured with the LSAMP closely correspond to permeability measured with a traditional minipermeameter and those measured on cores. Measurement error caused by soil moisture is less than 5 percent for volumetric water contents less than 5 percent. An analysis of variance on 38 triplicate measurements indicates that the variability associated with measurement error is much less than the range of measured values. Repeated permeability measurements under field conditions on two standard cores indicate that while the measurement error is greater under field conditions, the prototype device field performance is consistent with laboratory calibration results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-6584.1994.tb00640.x
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  • 10
    Electronic Resource
    Electronic Resource
    Glasshouse and field evaluation of cowpea lines for partial resistance to Phytophthora vignae (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Plant pathology 43 (1994), S. 0 
    Details
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The reaction of cowpea lines to naturally occurring Phytophthora vignae in the field was studied in three trials over the period 1987–89 with the aim of identifying and characterizing lines with partial resistance. Seven lines (CPI 84853, CPI 84851, CPI 65393, CPI 77359, CPI 78209. CPI 78213 and cultivar Blackeye 5) were found to be partially resistant. Partial resistance was assessed by calculating disease incidence, disease severity, time lag before onset of disease, relative area under the disease progress curve and apparent mortality and infection rates. Significant differences in some of the characters further divided the partially resistant lines into different groups. It was concluded that the characters found to be most useful in the differentiation of relative levels of partial resistance were final percentage infection, and final percentage of plants with non-killing lesions. There were also significant correlations between these variables within and between years, although the relative rankings of some of the lines changed between years. Overall, CPI 84853 and CPI 65393 showed higher levels of partial resistance in the field than the remaining lines. In general, the partially resistant lines gave variable reactions following hypocotyl inoculation with P. vignae. There were clear indications of host-isolate interactions, suggesting that partial resistance may be no more durable than complete resistance for this particular host-pathogen interaction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3059.1994.tb00548.x
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