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  • 1
    Language: German
    In: Heilberufe, 2014, Vol.66(12), pp.63-63
    Description: „Wir brauchen eine umfassende Diskussion über die Neuverteilung von Aufgaben aller Gesundheitsberufe, insbesondere von Ärzten und Pflegefachpersonen“, forderte Thomas Meißner, Mitglied des Präsidiums des Deutschen Pflegerats, bei der Fachtagung der IKK zum Thema „Delegation und Substitution — Brauchen wir immer einen Arzt?“ in Berlin.
    Keywords: Medicine & Public Health ; Nursing ; Nursing;
    ISSN: 0017-9604
    E-ISSN: 1867-1535
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  • 2
    Language: English
    In: Schizophrenia Research, May, 2013, Vol.146(1-3), p.59(5)
    Description: To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.schres.2013.01.028 Byline: Michael Schulz, Richard Gray, Alexa Spiekermann, Christoph Abderhalden, Johann Behrens, Martin Driessen Keywords: Adherence; Compliance; Antipsychotic; Schizophrenia Abstract: Non-adherence with antipsychotic medication is common in patients with schizophrenia. Article History: Received 22 August 2012; Revised 14 January 2013; Accepted 30 January 2013
    Keywords: Clinical Trials ; Patient Compliance ; Schizophrenia
    ISSN: 0920-9964
    Source: Cengage Learning, Inc.
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  • 3
    Language: English
    In: Journal of the American Chemical Society, July 4, 2012, Vol.134(26), p.10876-10884
    Description: The physical-organic studies of charge transport by tunneling through self-assembled monolayers (SAMs), based on systematic variations of the structure of the molecules constituting the SAM are described. The study provides route to test the synthetic schemes that combine a thiol group on one end of molecule with a group, R on the other via an amide-based coupling provide practical routes to molecules useful in studies of molecular electronics.
    Keywords: Charge Transfer -- Analysis ; Gallium Compounds -- Chemical Properties ; Gallium Compounds -- Electric Properties ; Molecular Electronics -- Research ; Silver Compounds -- Chemical Properties ; Silver Compounds -- Electric Properties ; Substitution Reactions -- Analysis
    ISSN: 0002-7863
    Source: Cengage Learning, Inc.
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  • 4
    Language: English
    In: Thuo, Martin M., William F. Reus, Christian A. Nijhuis, Jabulani R. Barber, Choongik Kim, Michael D. Schulz, and George M. Whitesides. 2011. “Odd−Even Effects in Charge Transport Across Self-Assembled Monolayers.” Journal of the American Chemical Society 133, no. 9: 2962–2975.
    Description: This paper compares charge transport across self-assembled monolayers (SAMs) of n-alkanethiols containing odd and even numbers of methylenes. Ultraflat template-stripped silver (AgTS) surfaces support the SAMs, while top electrodes of eutectic gallium−indium (EGaIn) contact the SAMs to form metal/SAM//oxide/EGaIn junctions. The EGaIn spontaneously reacts with ambient oxygen to form a thin (1 nm) oxide layer. This oxide layer enables EGaIn to maintain a stable, conical shape (convenient for forming microcontacts to SAMs) while retaining the ability to deform and flow upon contacting a hard surface. Conical electrodes of EGaIn conform (at least partially) to SAMs and generate high yields of working junctions. Ga2O3/EGaIn top electrodes enable the collection of statistically significant numbers of data in convenient periods of time. The observed difference in charge transport between n-alkanethiols with odd and even numbers of methylenes — the “odd−even effect” — is statistically discernible using these junctions and demonstrates that this technique is sensitive to small differences in the structure and properties of the SAM. Alkanethiols with an even number of methylenes exhibit the expected exponential decrease in current density, J, with increasing chain length, as do alkanethiols with an odd number of methylenes. This trend disappears, however, when the two data sets are analyzed together: alkanethiols with an even number of methylenes typically show higher J than homologous alkanethiols with an odd number of methylenes. The precision of the present measurements and the statistical power of the present analysis are only sufficient to identify, with statistical confidence, the difference between an odd and even number of methylenes with respect to J, but not with respect to the tunneling decay constant, β, or the pre-exponential factor, J0. This paper includes a discussion of the possible origins of the odd−even effect but does not endorse a single explanation.
    Keywords: Chemistry;
    ISSN: 0002-7863
    E-ISSN: 15205126
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  • 5
    Language: English
    In: Electrochimica Acta, Jan 10, 2014, Vol.116, p.388(8)
    Description: To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.electacta.2013.11.085 Byline: Andreas Hofmann, Lisa Merklein, Michael Schulz, Thomas Hanemann Abstract: In this study, novel electrolyte solvents and the conducting salt lithium bis(trifluoromethanesulfonyl)azanide (LiTFSA) are compared with respect to aluminum anodic dissolution, often called in an ambiguous manner aluminum corrosion. Namely, mixtures of propylene carbonate, sulfolane, the ionic liquid N,N-diethyl-N-methyl-N-(2-methoxyethyl)ammonium bis(trifluoromethanesulfonyl)azanide (DMMA-TFSA) and various concentrations of LiTFSA are prepared and investigated in Al|Li cell configuration. It is verified that the choice of the concentration of LiTFSA and the composition of the solvent mixture affects the tendency of Al dissolution significantly. Principally, the best results (least dissolution/corrosion) are obtained in case of high LiTFSA concentrations and by adding the ionic liquid DMMA-TFSA to the organic solvents. Author Affiliation: (a) Karlsruher Institut fur Technologie (KIT), Institut fur Angewandte Materialien - Werkstoffprozesstechnik, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany (b) Universitat Freiburg, Institut fur Mikrosystemtechnik, Georges-Kohler-Allee 102, 79110 Freiburg, Germany Article History: Received 18 September 2013; Revised 14 November 2013; Accepted 15 November 2013
    Keywords: Cytokinins ; Carbonates ; Electrolytes ; Batteries ; Corrosion (Chemistry)
    ISSN: 0013-4686
    Source: Cengage Learning, Inc.
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  • 6
    Language: English
    In: Electrochimica Acta, Feb 1, 2013, Vol.89, p.823(9)
    Description: To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.electacta.2012.10.144 Byline: Andreas Hofmann (a), Michael Schulz (a)(b), Thomas Hanemann (a)(b) Keywords: Ionic liquid; Gel polymer electrolyte; Lithium ion battery; NMC Abstract: A new ionic liquid-based polymer gel electrolyte for lithium ion batteries is prepared by combining N-methyl-N-propylpyrrolidinium bis(trifluoromethylsulfonyl)azanide, organic carbonates, lithium bis(trifluoromethylsulfonyl)azanide, and poly(vinylidene fluoride-co-hexafluoropropylene). The conductivities of the gel electrolytes at room temperature are about 1-2mS/cm. It is shown that the polymer gel electrolytes work effectively with a graphite anode and a LiCo.sub.1/3Mn.sub.1/3Ni.sub.1/3O.sub.2 cathode. Further it is proven that the addition of vinylene carbonate and 4-vinylpyridine considerably improves the cell performance. Author Affiliation: (a) Karlsruher Institut fur Technologie (KIT), Institut fur Angewandte Materialien - Werkstoffprozesstechnik (IAM-WPT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany (b) Universitat Freiburg, Institut fur Mikrosystemtechnik, Georges-Kohler-Allee 102, 79110 Freiburg, Germany Article History: Received 19 July 2012; Revised 21 September 2012; Accepted 28 October 2012
    Keywords: Polymer Industry ; Carbonates ; Electrolytes ; Batteries ; Polymers
    ISSN: 0013-4686
    Source: Cengage Learning, Inc.
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  • 7
    Language: English
    In: Nuclear Instruments and Methods in Physics Research, A, May 11, 2013, Vol.710, p.37(5)
    Description: To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.nima.2012.10.112 Byline: Michael Schulz (a), Gerd Ehret (a), Petr KAen (b) Keywords: Flatness metrology; Interferometry; Deflectometry; Capacitive distance sensors; Nanometrology; European Metrology Research Program Abstract: Recently, a project within the European Metrology Research Program (EMRP) started with the aim of improving the form metrology of optical surfaces. Within this project, in a work package on high accuracy flatness metrology, the National Metrology Institutes of the Czech Republic (CMI) and Germany (PTB) are involved. In the following, this EMRP project, the capabilities of CMI and PTB and the aims of the project will be presented. The new developments in flatness metrology cover the reduction of uncertainty, the enhancement of lateral resolution of deflectometric methods and the test of capacitive sensors for flatness metrology. Author Affiliation: (a) Physikalisch-Technische Bundesanstalt (PTB), Bundesallee 100, 38116 Braunschweig, Germany (b) Czech Metrology Institute (CMI), V Botanice 4, CZ-150 00 Praha, Czech Republic
    ISSN: 0168-9002
    Source: Cengage Learning, Inc.
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  • 8
    Language: English
    In: Journal of Atmospheric and Solar-Terrestrial Physics, October 2018, Vol.177, pp.92-102
    Description: In some simple models of magnetospheric electrodynamics [e.g., , , , 154–173, 1975], the normal component of the convection electric field is discontinuous across the boundary between closed and open magnetic field lines, and this discontinuity facilitates the formation of auroral arcs there. The requisite discontinuity in is achieved by making the scalar potential proportional to a positive power (typically 1 or 2) of on closed field lines and to a negative power (typically −1/2) of on open (i.e., polar-cap) field lines. This suggests it may be advantageous to construct more realistic (and thus more complicated) empirical magnetospheric and ionospheric electric-field models from superpositions of mutually orthogonal (or not) vector basis functions having this same analytical property (i.e., discontinuity at  =  *, the boundary surface between closed and open magnetic field lines). The present work offers a few examples of ways to make such constructions. A major challenge in this project has been to devise a coordinate system that simplifies the required analytical expansions of electric scalar potentials and accommodates the anti-sunward offset of each polar cap's centroid relative to the corresponding magnetic pole. For circular northern and southern polar caps containing equal amounts of magnetic flux, one can imagine a geometrical construction of coordinate contours such that arcs of great circles connect points of equal quasi-longitude (analogous to MLT) on the northern and southern polar-cap boundaries. For more general polar-cap shapes and (in any case) to assure mutual orthogonality of respective coordinate surfaces on the ionosphere, a formulation based on harmonic coordinate functions (expanded in solutions of the two-dimensional Laplace equation) may be preferable.
    Keywords: Magnetospheric Electric Field ; Auroral Oval ; Harmonic Coordinates ; Meteorology & Climatology ; Astronomy & Astrophysics ; Physics
    ISSN: 1364-6826
    E-ISSN: 1879-1824
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  • 9
    Language: English
    In: Electrochimica Acta, 01 February 2013, Vol.89, pp.823-831
    Description: A new ionic liquid-based polymer gel electrolyte for lithium ion batteries is prepared by combining N-methyl-N-propylpyrrolidinium bis(trifluoromethylsulfonyl)azanide, organic carbonates, lithium bis(trifluoromethylsulfonyl)azanide, and poly(vinylidene fluoride-co-hexafluoropropylene). The conductivities of the gel electrolytes at room temperature are about 1–2 mS/cm. It is shown that the polymer gel electrolytes work effectively with a graphite anode and a LiCo Mn Ni O cathode. Further it is proven that the addition of vinylene carbonate and 4-vinylpyridine considerably improves the cell performance.
    Keywords: Ionic Liquid ; Gel Polymer Electrolyte ; Lithium Ion Battery ; Nmc ; Engineering ; Chemistry
    ISSN: 0013-4686
    E-ISSN: 1873-3859
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  • 10
    In: Nature, 2010, Vol.466(7303), p.226
    Description: The Sahara Desert is the largest source of mineral dust in the world (1). Emissions of African dust increased sharply in the early 1970s (ref. 2), a change that has been attributed mainly to drought in the Sahara/Sahel region (2) caused by changes in the global distribution of sea surface temperature (3,4). The human contribution to land degradation and dust mobilization in this region remains poorly understood (5-11), owing to the paucity of data that would allow the identification of long-term trends in desertification (12). Direct measurements of airborne African dust concentrations only became available in the mid-1960s from a station on Barbados (2) and subsequently from satellite imagery since the late 1970s: they do not cover the onset of commercial agriculture in the Sahel region ~170 years ago (11,13,14). Here we construct a 3,200-year record of dust deposition off northwest Africa by investigating the chemistry and grain-size distribution of terrigenous sediments deposited at a marine site located directly under the West African dust plume. With the help of our dust record and a proxy record for West African precipitation (15) we find that, on the century scale, dust deposition is related to precipitation in tropical West Africa until the seventeenth century. At the beginning of the nineteenth century, a sharp increase in dust deposition parallels the advent of commercial agriculture in the Sahel region. Our findings suggest that human-induced dust emissions from the Sahel region have contributed to the atmospheric dust load for about 200 years.
    Keywords: Agriculture -- Environmental Aspects ; Terrigenous Sediments -- Research;
    ISSN: 0028-0836
    E-ISSN: 14764687
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