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  • Springer  (306)
  • 2020-2024  (6)
  • 1985-1989  (128)
  • 1970-1974  (80)
  • 1950-1954  (55)
  • 1935-1939  (37)
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  • 1
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    Unknown
    Erratum to: Search for squarks and gluinos in final states with one isolated lepton, jets, and missing transverse momentum at $$sqrt{s}=13$$ TeV with the ATLAS detector (2021)
    Springer
    Details
    Publication Date: 2021-10-01
    Description: A correction to this paper has been published: 10.1140/epjc/s10052-021-09344-w
    Print ISSN: 1434-6044
    Electronic ISSN: 1434-6052
    Topics: Physics
    Published by Springer
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  • 2
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    Search for squarks and gluinos in final states with one isolated lepton, jets, and missing transverse momentum at $$sqrt{s}=13$$ TeV with the ATLAS detector (2021)
    Springer
    Details
    Publication Date: 2021-07-01
    Description: The results of a search for gluino and squark pair production with the pairs decaying via the lightest charginos into a final state consisting of two W bosons, the lightest neutralinos ($$ilde{chi }^0_1$$ χ ~ 1 0 ), and quarks, are presented: the signal is characterised by the presence of a single charged lepton ($$e^{pm }$$ e ± or $$mu ^{pm }$$ μ ± ) from a W boson decay, jets, and missing transverse momentum. The analysis is performed using 139 fb$$^{-1}$$ - 1 of proton–proton collision data taken at a centre-of-mass energy $$sqrt{s}=13$$ s = 13   delivered by the Large Hadron Collider and recorded by the ATLAS experiment. No statistically significant excess of events above the Standard Model expectation is found. Limits are set on the direct production of squarks and gluinos in simplified models. Masses of gluino (squark) up to 2.2  (1.4 ) are excluded at 95% confidence level for a light $$ilde{chi }^0_1$$ χ ~ 1 0 .
    Print ISSN: 1434-6044
    Electronic ISSN: 1434-6052
    Topics: Physics
    Published by Springer
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  • 3
    Electronic Resource
    Electronic Resource
    Zur Mizellbildung in Mischlösungen homologer und nichthomologer Tenside (1973)
    Springer
    Colloid & polymer science 251 (1973), S. 424-431 
    Details
    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
    Description / Table of Contents: Summary Critical micelle concentrationsc M have been determined in aqueous mixed solutions of two surface active agents from surface-tension-concentration curves. Mixed systems of two homologous nonionic or anionic agents as well as of one nonionic and one ionic agent were involved. The results have been compared with an earlier derived equation forc M as a function of the mixing ratio. The validity of this equation presupposes that the mixed micelles behave thermodynamically like ideal mixtures. It was found that thec M values measured in mixed systems of two homologous surface active agents agree with the equation within the limits of experimental error. However, with mixtures of one nonionic and one ionic agent thec M values of the mixed solutions are considerably smaller than those calculated by the equation. If both components have nearly equalc M values a strong diminution ofc M below this value is observed. The results are discussed in terms of the mixing behaviour of the hydrophobic and the hydrophilic groups of the components. The surface activity of the mixed system shows a trend very similar to that of the tendency of micelle formation. This result is discussed on the basis of considerations on the adsorption from mixed solutions.
    Notes: Zusammenfassung Kritische Mizellbildungskonzentrationenc M wurden in wäßrigen Mischlösungen je zweier Tenside aus Oberflächenspannungs-Konzentrationskurven ermittelt. Dabei handelte es sich um Mischungsreihen aus je zwei homologen nichtionogenen oder anionischen Tensiden sowie zwischen je einem nichtionogenen und einem ionogenen Tensid. Die Ergebnisse wurden mit einer früher abgeleiteten Gleichung fürc M in Abhängigkeit vom Mischungsverhältnis verglichen. Die Gültigkeit dieser Gleichung setzt voraus, daß die Mischmizellen sich thermodynamisch wie ideale Mischungen verhalten. Es wurde gefunden, daß in Mischungsreihen zweier homologer Tenside die gemessenenc M -Werte innerhalb der Fehlergrenzen mit der Gleichung übereinstimmen. Bei Mischungen aus je einem nichtionogenen und einem ionogenen Tensid liegen diec M -Werte der Mischlösungen jedoch erheblich niedriger als es von der Gleichung gefordert wird. Wenn die beiden Endglieder annähernd gleichec M -Werte haben, wird in den Mischlösungen eine beträchtliche Herabsetzung vonc M unter diesen Wert beobachtet. Die Ergebnisse werden im Hinblick auf das Mischungsverhalten der hydrophoben und der hydrophilen Gruppen der Mischunspartner diskutiert. Die Oberflächenaktivität in den Mischungsreihen zeigt im wesentlichen den gleichen Gang wie die Mizellbildungstendenz. Dieses Ergebnis wird anhand von Überlegungen über die Adsorption aus Mischlösungen diskutiert.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01498689
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  • 4
    Electronic Resource
    Electronic Resource
    A canonical correlation of fire protective behaviors and beliefs (1989)
    Springer
    Fire technology 25 (1989), S. 41-50 
    Details
    ISSN: 1572-8099
    Keywords: health beliefs ; protection motivation theory ; response efficacy ; personal efficacy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying
    Notes: Abstract The use of a multivariate procedure is demonstrated in the analysis of a survey of various firesafety actions and beliefs in a college student population. A canonical correlation analysis identified three significant factors and revealed that performing a safety inspection of one's residence for potential hazards was associated with beliefs in one's personal efficacy in handling fire situations, whereas engaging in more emergency-related actions such as checking to see if one's smoke detector was working properly, knowing the emergency telephone number, having it posted by the telephone, and knowing two exits out of each area of the home was related to beliefs of susceptibility and seriousness concerning fires. A third factor revealed an association between having a sprinkler system (but not a fire extinguisher) present in the place of residence, vacuuming the dust from a smoke detector, and having ever practiced an emergency escape with beliefs reflecting susceptibility to future (but not present) fire hazards, adequacy of firesafety knowledge, and beliefs in the effectiveness of firesafety inspections. It is shown that the results of this analysis can be quite useful in guiding the development of firesafety education materials; also, the need to differentiate the specific motivational approach depending upon the type of firesafety action being promoted with this particular population is revealed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01039722
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  • 5
    Electronic Resource
    Electronic Resource
    Chromium-titanium-antimony oxide composite anodes: Electro-organic oxidations (1987)
    Springer
    Journal of applied electrochemistry 17 (1987), S. 914-924 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract An activated titanium electrode with an oxide layer, composed of a mixture of Cr2O3, TiO2 and Sb2O3 (optimal mole ratio chromium:titanium:antimony about 2∶1∶1) has been fabricated by thermal decomposition of the chlorides on a titanium substrate at 650°C. The black-green layer adheres well and has a thickness in the order of micrometres. Its structure is explained using a pore model, based on SEM, AES and electrochemical results. Service life time of electrodes in 1 M H2SO4 for oxidation of isopropanol in terms of the turn over factor of Cr2O3 is between 100 and 400. Preparative electro-organic oxidation of isopropanol, tetrahydrofuran and ethylbenzene have been performed with current densities of 0.5 to 5 mA cm−2. The current efficiencies for the main products, acetone, γ-butyrolactone and acetophenone are 100, 53 and 20%, respectively. These results parallel those of the homogeneous oxidation with chromic acid in solution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01024357
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  • 6
    Electronic Resource
    Electronic Resource
    Large-scale configuration of the magnetic field in spiral galaxies (1986)
    Springer
    Astrophysics and space science 119 (1986), S. 191-194 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Global configuration of magnetic field in several spiral galaxies were determined by analysing characteristic variation of Faraday rotation within the galaxy disks. The majority has an open spiral, bisymmetric field configuration, while some (10–20%) have a ring field.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00648844
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  • 7
    Electronic Resource
    Electronic Resource
    Potentiodynamic electrodeposition of paint (EDP) (1985)
    Springer
    Journal of applied electrochemistry 15 (1985), S. 825-836 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract Potentiodynamic electropainting at a rotating iron disc electrode has been investigated with three different EDP resins, two anodic from the acrylate type and one cathodic from the epoxide type, and a wide variation of conditions. Voltage scan rate (ν s=1 to 200 Vs−1), voltage range (40 to 200V) and electrode rotation speed (n=60 and 1000rpm) were the most important parameters. The (cyclic) voltammetric curves obtained generally exhibit three characteristic features: (1) The current rises steeply at the start of the experiment. Bath resistance transforms the potentiodynamic curve simultaneously into a galvanodynamic curve. After a transition time, τ, a critical pH is attained at the phase boundary and electrocoagulation occurs. This leads to a rapidly decreasing current density. The sharp c.d. maximum thus established has a peak voltage,U p, which increases withν s according to the relation logU P∼ 1/3 log νs in accordance with theory. (2) At high voltages, a limiting current density is observed, increasing with the square root of νs. This could be quantitatively interpreted in terms of dynamic growth of film thickness governed by Ohmic ion transport in the film. The preceding part of theU/j curve declines withj ∼t −1/2, which indicates the prevalence of space charge effects. (3) Ohmic lines are measured in the course of the first reverse scan and in all quasi steady state follow up cycles. They are flatter by a factor of 1000 in regard to the initial Ohmic line and reflect low voltage Ohmic behaviour of the EDP-film. At high voltages positive current deviations occur due to Child's law. The curves can be measured easily and reproducibly. Due to their salient features it is proposed to use them for characterization of EDP-paints.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00614359
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  • 8
    Electronic Resource
    Electronic Resource
    Electrosynthesis of adiponitrile in undivided cells (1972)
    Springer
    Journal of applied electrochemistry 2 (1972), S. 59-69 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract It has been shown that adiponitrile can be synthesized in undivided cells under favourable conditions. Because of strong decomposition of the quaternary ammonium salt support electrolyte, its concentration must be kept at a very low level. To avoid excessive resistance of the cell, the distance between the electrodes must then be smaller than 0·5 mm. We have developed various types of such cells. The ‘capillary gap cell’ is simple in design and can be readily scaled up. Continuous operation is possible. Yields of about 90% of adiponitrile have been obtained. The energy consumption is less than 3 kWh/kg product. Work up of the solutions is greatly facilitated by the low salt concentrations. It has been shown that the anodic oxidation of isopropanol, which is used as cosolvent, is strongly influenced by the acrylonitrile present. A substantial portion of the isopropanol is oxidized to CO2.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00615193
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  • 9
    Electronic Resource
    Electronic Resource
    Positive polyacetylene electrodes in aqueous electrolytes (1985)
    Springer
    Journal of applied electrochemistry 15 (1985), S. 159-166 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract Polyacetylene films, contacted with platinum mesh, have been polarized anodically in aqueous H2SO4, HClO4, HBF4 and H2F2 of medium concentrations (30–70 wt%). Two oxidation peaks are observed, the equivalents of which are 1 $${\text{(1) 0}}{\text{.045 F mol}}^{ - {\text{1}}} {\text{ CH (2) 0}}{\text{.23 F mol}}^{ - {\text{1}}} {\text{ CH}}$$ The potential of the Process 1 decreases linearly with increasing acid concentration by 20–40 mV mol−1 dm−3, while the potential of Peak 2 exhibits normal Nernst behaviour (about + 60 mV decade−1. Process 1 is partially reversible, while Process 2 is totally irreversible. From these findings for Process 1 we conclude the reversible insertion of anions into the polyacetylene host lattice, which is primarily oxidized to the polyradical cation, with the co-insertion of acid molecules HA to yield the insertion compound [(CH)+·yA−·vyHA] x y⩽4.5% andv=1.5 for H2SO4 and HClO4. In the course of Process 2, the polymer is irreversibly oxidized according to $$( - ^ \cdot {\text{CH}} \cdot \cdot \cdot \cdot \cdot \cdot \cdot \cdot ^ \oplus {\text{ CH}} - )_{x/2} + 2{\text{H}}_{\text{2}} {\text{O}} \to ( - \mathop {\text{C}}\limits_{\mathop \parallel \limits_{\text{O}} } \cdot \cdot \cdot \cdot \cdot \cdot \cdot \cdot \mathop {\text{C}}\limits_{\mathop \parallel \limits_{\text{O}} } - )_{x/2} + 6{\text{H}}^{\text{ + }} + 5e^ - $$ As this process occurs to some extent even in the potential region of Process 1, a continuous degradation of the host lattice occurs upon cycling.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00620929
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  • 10
    Electronic Resource
    Electronic Resource
    Length distribution of aluminum etch tunnels (1989)
    Springer
    Journal of applied electrochemistry 19 (1989), S. 69-75 
    Details
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract A model was derived for the length distribution of aluminum etch tunnels, based on an assumed constant death rate per unit length. Both active and dead tunnels were accounted. The model gives reasonable fits to measured tunnel length distribution data with two adjustable parameters, the death rate per unit length and the number of active tunnels. The death rate parameter has a value of about 2% of tunnels dying per μm of growth length for the set of experimental data. The numbers of active and dead tunnels appear to be consistent with other tunnel measurements.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01039392
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