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  • 1
    Electronic Resource
    Electronic Resource
    Dispersion of love waves in non-uniform channels lying over homogeneous half-spaces (1973)
    Springer
    Pure and applied geophysics 104 (1973), S. 484-494 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary Earth's crust has non-uniformity in lateral as well as in vertical directions. In some tectonically significant areas, extremely rapid Love waves velocity variations have been observed. To study Love waves dispersion characteristics in such areas, two non-uniform channels with exponential velocity and rigidity variations in vertical and lateral directions are considered. Theoretical dispersion curves are presented to understand quantitatively the effect of non-uniformity in different directions by using ray theory techniques.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00875892
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  • 2
    Electronic Resource
    Electronic Resource
    Application of uncertainty analysis to groundwater pollution modeling (1995)
    Springer
    Environmental geology 26 (1995), S. 89-96 
    Details
    ISSN: 1432-0495
    Keywords: Groundwater pollution ; Analytical models ; Uncertainty analysis ; Monte Carlo technique
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Prediction and evaluation of pollution of the subsurface environment and planning remedial actions at existing sites may be useful for siting and designing new land-based waste treatment or disposal facilities. Most models used to make such predictions assume that the system behaves deterministically. A variety of factors, however, introduce uncertainty into the model predictions. The factors include model and pollution transport parameters and geometric uncertainty. The Monte Carlo technique is applied to evaluate the uncertainty, as illustrated by applying three analytical groundwater pollution transport models. The uncertainty analysis provides estimates of statistical reliability in model outputs of pollution concentration and arrival time. Examples are provided that demonstrate: (a) confidence limits around predicted values of concentration and arrival time can be obtained, (b) the selection of probability distributions for input parameters affects the output variables, and (c) the probability distribution of the output variables can be different from that of the input variables, even when all input parameters have the same probability distribution
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00768321
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  • 3
    Electronic Resource
    Electronic Resource
    Ca2+-dependence and metabolic status of an obligate thermophile,Thermoactinomyces vulgaris, under shake culture conditions (1982)
    Springer
    Cellular and molecular life sciences 38 (1982), S. 670-671 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Ca2+ stimulates germination ofT. vulgaris spores. There is a higher mycelial yield as well as higher protein, DNA, RNA and free Pi content in cultures grown in the presence of Ca2+ as compared to those grown in the absence of this divalent cation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01964084
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  • 4
    Electronic Resource
    Electronic Resource
    Evaluation of different zinc sources for lowland rice production (1999)
    Springer
    Biology and fertility of soils 30 (1999), S. 168-172 
    Details
    ISSN: 1432-0789
    Keywords: Key words Rice ; Zinc uptake ; Zinc mobilization ; Panicle-emergence index ; Harvest index
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract  ZnSO4, Zn-enriched farmyard manure (Zn-FYM), Zn-tetraammonia complex sorbed on FYM [Zn(NH3)4-FYM] and Zn-ethylenediaminetetraacetate (Zn-EDTA) were compared as Zn sources for rice production under lowland conditions. The amount of Zn supplied by Zn-EDTA was one-tenth of that supplied by the other Zn sources. Zn application to a Zn-deficient soil corrected the visual symptoms of Zn deficiency and significantly increased the total biomass, grain yields and the harvest index of rice, as well as the Zn concentration in the grain and the uptake of Zn by the straw and the grains. Even with lower rates of application (0.25 and 0.5 mg Zn kg–1 soil), Zn-EDTA treatments gave comparable values for these parameters, and the highest "Zn-mobilization efficiency" compared to the other Zn sources. The content of diethylenetriaminepentaacetate (DTPA)-extractable Zn in the soil of the different treatments after the harvest of rice was in the order; ZnSO4=Zn-FYM〉Zn(NH3)4-FYM=Zn-EDTA. The application of Zn also significantly increased the number of panicles that emerged between 80 to 93 days after transplanting, though the total number of panicles at harvest remained unaffected. The calculated panicle-emergence index had a positive correlation with the grain yield of rice. The Zn-EDTA treatment, inspite of supplying the lowest amount of Zn, as well as leading to the lowest rate of Zn uptake, produced the highest yields. Therefore, we concluded Zn-EDTA to be the most efficient source of Zn for lowland rice production.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003740050604
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  • 5
    Electronic Resource
    Electronic Resource
    Isolation and characterization of a virus (RL 1) infective on Rhizobium leguminosarum (1978)
    Springer
    Archives of microbiology 119 (1978), S. 263-267 
    Details
    ISSN: 1432-072X
    Keywords: Rhizobium ; Virus ; Morphology ; One step growth ; General characterization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A virus (RL 1) that infects Rhizobium leguminosarum was isolated and studied. The virus has phagelike morphology; it has a hexagonal head and a long, flexible, noncontractile tail with a baseplate. The edgeto-edge diameter of head is 760 Å. The tail is 1515 Å long and 115 Å wide. RL 1 is stable at 4° C in distilled water, with only 20% loss in the titer after one month storage. It does not require any ion for stability, and is stable between pH 6.0 and 8.0. The virus is composed of two components; one is thermal sensitive and the other is relatively thermal resistant. Adsorption and ‘one step growth’ experiments under normal growth conditions showed a slow adsorption rate (0.82×10-9 cm3 min-1) followed by a 90 min latent period. The burst size was approximately 100 virus particles per cell.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00405405
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  • 6
    Electronic Resource
    Electronic Resource
    Haemostatic abnormalities in brain tumours (1990)
    Springer
    Acta neurochirurgica 102 (1990), S. 103-107 
    Details
    ISSN: 0942-0940
    Keywords: Gliomas ; meningiomas ; haemostatic abnormality ; fibrinolysis ; disseminated intravascular coagulation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The coagulation profile of 25 patients with brain tumours was studied preoperatively, intraoperatively and postoperatively. Ten patients had abnormal coagulation status preoperatively. Surgical intervention led to either an alteration of preexisting abnormality or appearance of new coagulation abnormality. Disseminated intravascular coagulation and fibrinolysis occurred with equal frequency in patients with meningiomas and gliomas. The alterations as a result of surgery were transient and compensated rapidly.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01405422
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  • 7
    Electronic Resource
    Electronic Resource
    A COMPUTERIZED DATA BASE FOR FLOOD PREDICTION MODELING (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the American Water Resources Association 23 (1987), S. 0 
    Details
    ISSN: 1752-1688
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: : A computerized geographic information system (GIS) was created in support of data requirements by a hydrologic model designed to predict the runoff hydrograph from ungaged basins. Some geomorphologic characteristics (i.e., channel lengths) were manually measured from topographic maps, while other parameters such as drainage area and number of channels of a specified order, land use, and soil type were digitized and manipulated through use of the GIS. The model required the generation of an integrated Soil Conservation Service (SCS) curve number for the entire basin. To this end, soil associations and land use (generated from analysis of Landsat satellite data) were merged in the GIS to acquire a map representing SCS runoff curve numbers. The volume of runoff obtained from the Watershed Hydrology Simulation (WAHS) Model using this map was compared to the volume computed by hydrograph separation and found to be accurate within 19 percent error. To quantify the effect of changing land use on basin hydrology, the GIS was used to vary percentages from the drainage area from forest to bare soil. By changing the basin runoff curve numbers, significant changes in peak discharge were noted; however, the time to peak discharge remained essentially independent of change in area of land use. The GIS capability eliminated many of the more traditional manual phases of data input arid manipulation, thereby allowing researchers to concentrate on the development and calibration of the model and the interpretation of presumably more accurate results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1752-1688.1987.tb00780.x
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  • 8
    Electronic Resource
    Electronic Resource
    A COMPARISON OF TRANSFORMATION METHODS FOR FLOOD FREQUENCY ANALYSIS (1986)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the American Water Resources Association 22 (1986), S. 0 
    Details
    ISSN: 1752-1688
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: : The SMEMAX transformation, its modified versions and power transformation were applied to 55 long-term records of annual maximum flood flows tested previously for independence, homogeneity and completeness. Even though SMEMAX transformation reduced the coefficient of skewness to near zero for flood data, their distribution was not a true normal distribution. In almost all cases, the coefficient of kurtosis was quite different from 3.0 of the normal distribution. Empirical criteria showed that SMEMAX transformation performed well only for 40 (70 percent) of the 55 stations tested. Its performance level dropped, especially for stations which had both the coefficient of skewness and kurtosis greater than 3.0 and 10.0, respectively. Power transformation was generally better in transforming the flood data to a normal distribution. It performed well for 50 (90 percent) of the 55 stations tested. The coefficient of skewness in case of the data transformed by power transformation was much closer to the zero value than in the case of SMEMAX transformed series. The SMEMAX transformation and its two modified versions yielded identical results when flood frequency analysis was performed. Computationally, all three methods were equally simple and easy to apply for flood frequency analysis. In some cases, the coefficient of kurtosis for the transformed distributions obtained both by SMEMAX and power transformations deviated farther from that for the normal distribution than for the parent distribution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1752-1688.1986.tb00762.x
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  • 9
    Electronic Resource
    Electronic Resource
    SOME GEOMORPHIC RELATIONSHIPS AND HYDROGRAPH ANALYSIS (1986)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the American Water Resources Association 22 (1986), S. 0 
    Details
    ISSN: 1752-1688
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: : First order drainage channels originate when the tractive force exerted by flowing water is sufficient to move surface sediment. The amount of runoff available to move sediment is a function of geologic and climatic characteristics. An experimental analysis showed that soils derived from fine grained rocks had lower infiltration rates and higher runoff volume than soils derived from coarser grained rocks in a semi-arid climate. Root density and penetration increased in a more humid climate and increased infiltration rates. The number of first order channels was inversely proportional to the infiltration capacity of the soil.Each first order channel acts as a source area for surface runoff. The distribution of first order channel distances from the gage determines the timing of the delivery of water to the gage. A comparison of the frequency histogram of first order channel distances for drainage basins in Pennsylvania and their hydxographs of runoff from general storms showed marked similarity. This close correspondence indicated the shape of the surface runoff hydrograph and was largely controlled by the distribution of first order channel distances.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1752-1688.1986.tb00751.x
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  • 10
    Electronic Resource
    Electronic Resource
    Identification of restorers and maintainers for developing basmati and non-basmati hybrids in rice, Oryza sativa (2000)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 119 (2000), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Twenty-seven improved aromatic lines of germplasm and 18 non-aromatic disease-resistant genotypes of rice were test-crossed with four cytoplasmic male-sterile lines (IR 58025A, IR 62829A, PMS 3A and PMS 10A). Thirteen aromatic and 10 non-aromatic genotypes were selected based on pollen fertility, and crosses were repeated to confirm sterility-maintaining and fertility-restoring ability. Genotypes were categorized as effective restorers (〉 80% spikelet fertility), partial restorers (21-79% spikelet fertility) and maintainers (〈 1% spikelet fertility). The effective basmati restorers identified were Basmati 385, Chandan, P1031-8-5-1, HKR 241-IET-12020, SAF Khalsa 7 and Karnal Local. The basmati maintainers identified were Basmati 370, Pusa basmati 1, P615-K-167-13 and P1173-4-1. The frequency of restorers obtained was higher for the non-aromatic than the aromatic basmati type. The performance of restorers varied with cytoplasmic male-sterile (CMS) line, location and season of testing. The differential ability to restore fertility in the CMS lines that have the wild abortive (WA) cytosterile system could result from different nuclear backgrounds of the CMS lines. These restorers and maintainers possess acceptable grain dimensions, a desirable degree of aroma, volume expansion through linear kernel elongation and cooking quality characteristics of basmati rice. These genotypes will contribute to developing basmati hybrids and provide restorers and maintainers with acceptable key basmati quality characteristics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1439-0523.2000.00490.x
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