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  • 1
    Electronic Resource
    Electronic Resource
    A signaling and control architecture for mobility support in wireless ATM networks (1996)
    Springer
    Mobile networks and applications 1 (1996), S. 287-298 
    Details
    ISSN: 1572-8153
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Notes: Abstract This paper presents a signaling and control architecture for mobility support in a “wireless ATM” network that provides integrated broadband services to mobile terminals. A system level protocol architecture for a wireless ATM network is outlined. The proposed protocol stack incorporates new wireless link MAC, DLC and wireless control sublayers, together with appropriate mobility extensions to the existing ATM network control layer. Wireless control and ATM signaling capabilities required for mobility support are discussed, and preliminary solutions are given for selected major functions. Potential extensions to standard Q.2931 ATM signaling are proposed to support handoff and service parameter/QoS renegotiation required for mobility. An associated wireless control protocol for supporting terminal migration, resource allocation, and handoff is discussed. Preliminary experimental results are given which validate the proposed handoff control protocol on an ATM network testbed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01193262
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  • 2
    Electronic Resource
    Electronic Resource
    Electrocatalytic activities of graphite-supported platinum electrodes for methanol electrooxidation (1996)
    Springer
    Journal of applied electrochemistry 26 (1996), S. 30-35 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract Electrooxidation of methanol in 1 m NaOH at 30°C was studied on graphite-supported platinum electrodes prepared both in hydrogen and in air at various temperatures. Heating in hydrogen always produced higher surface area of Pt, and hence greater mass activity, than in air at a particular temperature. Nevertheless, both the graphite-supported platinum electrodes exhibited almost the same specific activity as a smooth Pt electrode for methanol electrooxidation irrespective of the preparation conditions. This indicates that the difference in mass activity is due to different surface areas produced by the different preparation methods. The Tafel slope of 110 mV decade−1 on all the electrodes studied indicated that the first charge transfer process was the rate-determining step.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00248185
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  • 3
    Electronic Resource
    Electronic Resource
    Nuclear magnetic resonance VI. Some quantitative applications of carbon-13 NMR spectroscopy to phenylindoles (1996)
    Springer
    Monatshefte für Chemie 127 (1996), S. 111-116 
    Details
    ISSN: 1434-4475
    Keywords: Phenylindoles ; Quantitative13C NMR ; Chromium(III) acetylacetonate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die Anzahl der durch jedes Signal der Phenylindole1,4 und5 repräsentierten Kohlenstoffatome wird durch Integration der nach Zusatz von Chrom(III)acetonylacetat als Relaxationsreagens aufgenommenen13C-NMR-Spektren bestimmt. Ihre chemischen Verschiebungen werden eindeutig zugeordnet; die Literaturwerte für4 werden bestätigt. Durch eine vergleichende Untersuchung der13C-chemischen Verschiebungen von1,4 und5 können jene von2 und3 ebenfalls zugeordnet werden. Dieortho-Kohlenstoffe der Phenylgruppe von4 sind gegenüber denpara-Kohlenstoffatomen zu höherem Feld verschoben. Für die 2- und 3-Phenyl-Substituenten von1–3 und5 kehren sich die Verhältnisse um, wahrscheinlich wegen sterischer und/oder elektronischer Effekte der benachbarten Phenylgruppe.
    Notes: Summary The number of carbons represented by each signal of the phenylindoles1,4, and5 is measured quantitatively by integration of their13C NMR spectra, recorded after adding chromium(III) acetylacetonate to the sample solutions as a paramagnetic relaxation agent. Their carbon chemical shifts are assigned unambiguously; the literature assignments of4 are confirmed. By a comparative study of the carbon chemical shifts of1,4, and5, those of2 and3 are also assigned. Theortho carbons of the phenyl group of4 resonate upfield with respect to thepara carbon. Theortho carbons of the 2- and 3-phenyl moieties of1–3 and5, however, are found to absorb downfield from the correspondingpara carbons, probably because of steric and/or electronic effects exerted by their neighbouring phenyl group.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00807416
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  • 4
    Electronic Resource
    Electronic Resource
    Canonical generators of the cohomology of moduli of parabolic bundles on curves (1996)
    Springer
    Mathematische Annalen 306 (1996), S. 1-14 
    Details
    ISSN: 1432-1807
    Keywords: 14D20
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01445239
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  • 5
    Electronic Resource
    Electronic Resource
    NP-Creative sets: A new class of creative sets in NP (1996)
    Springer
    Theory of computing systems 29 (1996), S. 487-505 
    Details
    ISSN: 1433-0490
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Notes: Abstract We obtain a new definition of creativeness for NP, called NP-creativeness. We show that all NP-creative sets are NP-complete and provide strong evidence that all known NP-complete sets are NP-creative. We also show that all NP-creative sets are complete under exponentially honest reductions and contain an infinite NP subset in their complement (in other words, they are not NP-simple).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01184812
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  • 6
    Electronic Resource
    Electronic Resource
    Sustainable yield trends of irrigated maize and wheat in a long-term experiment on a loamy sand in semi-arid India (1996)
    Springer
    Nutrient cycling in agroecosystems 46 (1996), S. 225-234 
    Details
    ISSN: 1573-0867
    Keywords: long-term experiment ; maize ; wheat ; fertilizers ; farm yard manure ; weedicide application ; yield sustainability ; zinc deficiency ; nutrient uptake ; cropping sequence ; organic carbon build-up
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Long-term field experiments play an important role in understanding the complex interactions of plants, soils, climate and management and their effects on sustainable crop production. A long-term fertilizer experiment with maize-wheat-cowpea (fodder) is in progress since 1971 at Punjab Agricultural University farm Ludhiana, India. The experimental result for the first 21 years showed that application of N alone or in combination with P did not produce as much maize and wheat grains as the application of N, P and K together. Eight years after the start of the experiment, the optimal levels of N, P and K application (100% NPK) were unable to sustain the similar (maize) yield level as before because of Zn deficiency. Whereas in FYM amended plots the Zn deficiency did not appear and the higher crop yields could be sustained. The chemical control of weeds could not sustain the maize productivity at the same level as the manual removal of weeds. It was concluded that the high level of crop production can be sustained with the application of N, P and K under intensive cropping system provided deficiency of any of the micronutrient does not crop up. The deficiency of Zn is most likely to occur in semi-arid light textured alluvial soils under intensive cropping without the addition of farm yard manure/organic manures. In maize based cropping systems, manual control of weeds may be preferred to the chemical one. Addition of FYM in conjunction with 100% NPK is most beneficial both from bio-physical and economic point of view.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00420557
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  • 7
    Electronic Resource
    Electronic Resource
    Interaction of aldehydes with glyoxalase I and the status of several aldehyde metabolizing enzymes of Ehrlich ascites carcinoma cells (1996)
    Springer
    Molecular and cellular biochemistry 165 (1996), S. 9-16 
    Details
    ISSN: 1573-4919
    Keywords: methylglyoxal ; glyoxalase I ; aldehydes ; cancer
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract The possible effect of several physiologically important aldehydes has been tested on partially purified glyoxalase I of Ehrlich ascites carcinoma (EAC) cells. The results indicate that D, and L-lactaldehyde are strong non-competitive inhibitors of glyoxalase I and the effect with the D-isomer is more pronounced, whereas both D,L-glyceraldehyde and acetaldehyde are moderately inhibitory and the nature of inhibition is strictly competitive. Moreover, D,L-glyceraldehyde strongly inhibits the utilization of methylglyoxal by intact EAC cells. A search for the presence of several aldehyde metabolizing enzymes in EAC cells indicates that non-specific aldehyde reductase, methylglyoxal reductase, aldehyde dehydrogenase and alcohol dehydrogenase are apparently absent in this rapidly growing, highly de-differentiated malignant cell.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00229740
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  • 8
    Electronic Resource
    Electronic Resource
    Nitrogen balance and N recovery after 22 years of maize-wheat-cowpea cropping in a long-term experiment (1996)
    Springer
    Nutrient cycling in agroecosystems 47 (1996), S. 107-114 
    Details
    ISSN: 1573-0867
    Keywords: cropping sequence ; nitrogen losses ; nitrogen uptake ; organic carbon build-up ; soil N
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract The influence of N, P and K application through inorganic and organic fertilizers on N recovery in crop plants and its balance in the soil-plant (maize-wheat-cowpea fodder) was studied for the first 22 years of a long-term experiment at Punjab Agricultural University farm, Ludhiana, India. The results showed. that N removal and apparent N recovery by both maize and wheat was directly related to the balanced application of N, P and K fertilizers. Averaged over the years, application of N alone (100% N) resulted in a recovery of 17.1% in maize and 31.7% in wheat. The application of P and K along with N almost doubled (32.8% in maize and 64.7% in wheat) the apparent N recovery in the crops. Increase in soil N concentration which was related to the build-up of soil organic carbon (OC) occurred at a very slow rate with the application of N, P and K fertilizers. Addition of farm yard manure (FYM) resulted in highest N removal in crops and build-up of soil N and OC status. Application of recommended N without P and K fertilizers resulted in relatively large amounts (64–71%) of fertilizer N lost from the surface soil as compared to that (41–49%) with N, P and K applied together. Higher rate of fertilizer application (150% NPK) resulted in comparatively greater N loss (58–62%). It was concluded that balanced and judicious use of N, P and K fertilizers coupled with the addition of any deficient element (e.g. Zn) help in minimizing N losses and environmental pollution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01991542
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  • 9
    Electronic Resource
    Electronic Resource
    Cosmic string in Kerr-Newman-Kasuya spacetime (1996)
    Springer
    International journal of theoretical physics 35 (1996), S. 2625-2630 
    Details
    ISSN: 1572-9575
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We study the equilibrium configurations of a cosmic string described by the Nambu action in curved spacetime such as the Kerr-Newman-Kasuya spacetime, which is the Kerr-Newman spacetime involved with extra magnetic monopole charge. In this study it is interesting to note that the physical results remain the same whether or not the magnetic monopole does exist in nature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02085768
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  • 10
    Electronic Resource
    Electronic Resource
    The new radiation belt of the earth from trapped anomalous cosmic rays (1996)
    Springer
    Space science reviews 75 (1996), S. 423-451 
    Details
    ISSN: 1572-9672
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract In this review we briefly present the observational results on the new radiation belt of the Earth originating from the anomalous cosmic rays (ACR) and their implications. Firstly, a brief historical account of the development of our knowledge and ideas on the trapped particles in the geomagnetic field is presented. We then discuss briefly the first observations of the anomalous cosmic rays inside the magnetosphere in theSkylab experiment in 1973–1974 (Biswaset al., 1975). This showed that the measured ACR oxygen flux was at least 25 times higher than the calculated flux from the interplanetary value, indicating the presence of trapped ACR component originating from the Blake-Freisen mechanism (Biswas and Durgaprasad, 1980). In the ‘Cosmos’ experiment of the USSR, the presence of trapped ACR oxygen was indicated from the observations of double peaked angular distributution (Grigorovet al., 1990). In the recent satellite experiment, MAST-SAMPEX the new results were obtained which confirmed the earlier indications and established the presence of the trapped ACR component in the geomagnetic field from the spatially separated components of the ACR (Cummingset al., 1993). The properties of the trapped ACR ions as measured in the SAMPEX are briefly discussed. The theoretical model of trapped ACR oxygen by Blake and Preisen are briefly summarised. The implications of the new observations are noted.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00833340
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