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  • 1
    ISSN: 1618-2650
    Keywords: Best. von Europium(III) ; Polarographie ; verschiedene Elektrolyte
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1741-0444
    Keywords: Differential nerve block ; Polarising current
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Summary A device that provides a versatile and easily controllable means of producing transient current waveforms for the selective inactivation of nerve-fibre groups is described. It is constructed from readily available components, such as integrated circuits and optically coupled isolators. Good separation between A-fibre and C-fibre responses in the rat saphenous nerve has been achieved.
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  • 3
    ISSN: 1612-4766
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Hibernation of the beetles, Altica caerulescens Baly and Macrima armata Baly in the Kula Valley, Himachal Pradesh The flea beetle,Altica caerulescens Baly, is a pest of bringjal, tomato, spinach, strawberry and the weedsRumex sp. andImpatiens sp. in India. The beetle,Macrima armata Baly attacks the trees ofAlnus nitida and is also found as a minor pest of radish in Kulu Valley. Both of the beetles are found only in summer. Concerning the overwintering formerly it was supposed thatA. caerulescens hibernates in pupal stage. The autor describes for the first time about the overwintering of the two species in Kulu Valley based on a survey conducted in 1972 to 1975. Altica caerulescens hibernates in adult stage under the bark of willow (Salix alba).Macrima armata adults were found in the winter in cracks of Kosh trees (Alnus nitida).
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  • 4
    ISSN: 1612-4766
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Studies on rodents damage in relation to Cyanogenic Glucosides content in tubers of Manihot esculenta Crantz Rodents are the major pests of Cassava(Manihot esculenta) and inflict heavy losses in the field. In order to explore the possibilities of controlling rodents by developing resistant varieties in relation to HCN content studies were undertaken at Central Tuber Crops Research Institute, Trivandrum. In total 7 varieties were studied for extent of damage and tuber characters. The studies indicated that varieties, such as Ce 178, Ce 281 and Ce 96 having minimum concentration of HCN in rind were highly susceptible to rodent attack and were preferred over varieties, such as Ce 432 and Ce ll9, having higher concentration of HCN in the rind. Thus there is ample scope for evolving a cassava variety with higher concentration of cyanogenic glucosides in the rind and negligible quantities in the flesh to ward off heavy rodent attack, in the field.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1434-4483
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Description / Table of Contents: Zusammenfassung In dieser Arbeit wird ein Modell für die Stadt-Grundschicht ausführlich beschrieben. Das Modell ist mit Beobachtungsdaten aus Jodhpur geprüft worden, um die thermischen Auswirkungen der Luftverunreinigungen auf die Grundschicht über Perioden von ein bis zwei Tagen abzuschätzen. Die Simulation zeigt, daß das Temperaturmaximum in der Grundschicht durch die Luftverunreinigung beträchtlich vermindert wird.
    Notes: Summary An urban boundary-layer model is comprehensively described in this paper. The model has been tested with data from Jodhpur to estimate the thermal effects of pollutants on the boundary layer over periods of one to two days. The test simulation reveals that the maximum surface temperature is considerably reduced due to air pollution.
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  • 6
    ISSN: 1435-1528
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Zusammenfassung Die GlasübergangstemperaturenT g von Asphaltproben verschiedener Herkunft und Penetrationsgrade wurden mit einem Differentialkalorimeter (DSC-2) bestimmt. DieT g -Werte von Proben aus zwei Quellen nahmen mit wachsendem Penetrationsgrad ab, wohingegen diese bei Proben aus einer dritten Quelle bei allen Penetrationsgraden gleich blieben. Durch Einsetzen dieserT g -Daten in die Williams-Landel-Ferry-Gleichung wurden sowohl unter Verwendung von universellen als auch von optimierten Werten der KonstantenC 1 undC 2 die Viskositäten der verschiedenen Proben berechnet und mit den experimentell gefundenen Daten verglichen. Die universellen Werte ergaben Viskositäten, die große Unterschiede zu den gemessenen aufwiesen, während man bei Verwendung der optimierten Werte eine weitaus bessere Übereinstimmung erhielt.
    Notes: Summary The glass transition temperatures (T g ) of asphalt samples of different origins and penetration grades were determined by differential scanning calorimetry (DSC-2). TheT g values of samples originating from two sources decreased with increasing penetration whereas those of samples from a third source were identical at all values of penetration. Substituting theseT g data and values of the universal as well as the optimized constantsC 1 andC 2 in the Williams-Landel-Ferry equation, viscosities were calculated for each of the samples and compared with the corresponding experimental results. The universal values forC 1 andC 2 yielded viscosities which were far removed from the experimental data while the optimized values produced much better results.
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 89 (1934), S. 506-512 
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
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  • 8
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Summary Frictional coefficients between membrane matrix and permeants have been evaluated for ThO2/DMF system. The degrees of coupling ′q′ and the maximum value of the efficiencies of electrokinetic energy conversion, νmax, for both the modes of conversion, viz., electro-osmotic flow and streaming potential have been calculated from these coefficients and the results have been found to be in accordance with non-equilibrium thermodynamic theories. The values of frictional coefficients have also been used for characterising the membrane, viz., in determining the equivalent pore radii and the number of pores.
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  • 9
    ISSN: 1573-0832
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract A strain of Fusarium solani (Mart.) Sacc. (IMI-216517), isolated from a patient of mycotic keratitis, produced experimental keratomycosis in albino rabbit cornea and survived in internal tissues of albino mice for varying periods. Alantolactone, isolated from the plant — Inula racemosa Hook. f. exhibited marked in vitro fungistatic activity against this strain of F. solani at 100–200 μg/ml concentrations. The strain was less sensitive to amphotericin B and showed more acid than alkaline proteinase and phosphatase activities.
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  • 10
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract High fluences (i.e. the integrated fluxes) of C, N, O group of nuclei and some of the heavier ones, in the energy interval 10–25 MeV/amu, have been identified in a Lexan polycarbonate detector assembly exposed on the exterior of the Skylab for 73 days. The existence of large flux of low energy nuclei in the Skylab orbit is surprising since the minimum geomagnetic cut-off energy for fully stripped nuclei (A/Z=2) is ≃50 MeV/amu at the orbit of the satellite, and the period of exposure was a ‘quiet’ one, free from significant solar particle events. We have considered two sources for these particles: (i) partly ionized interplanetary ions accelerated within the magnetosphere and (ii) heavy nuclei trapped in the Earth's radiation belt. The flux and composition of the nuclei observed by us seem to be significantly different from those in the trapped radiation as known at present; hence it seems likely that the major part of the observed flux may be interpreted, in terms of partly ionized interplanetary ions that are further accelerated in the magnetosphere.
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