188,261 research outputs found

    Lipp, H. P.

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    Andreas Lipp

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    Samuel P. Huntington

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    3. völlig neu bearbeitete Auflag

    Samuel P. Huntington

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    3. völlig neu bearbeitete Auflag

    Der neue Pflegebedürftigkeitsbegriff

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    Wingenfeld K. Der neue Pflegebedürftigkeitsbegriff. In: Bechtel P, Smerdka-Arhelger I, Lipp K, eds. Pflege im Wandel gestalten - Eine Führungsaufgabe. 2nd ed. Berlin: Springer-Verlag; 2017: 39-46

    Studies of extended area tin dioxide anodes

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    Doped tin dioxide coatings on titanium have been prepared by the thermal decomposition method and characterised by cyclic voltammetry with the Fe(CN)64-/Fe(CN)63- couple. Electron transfer was shown to be fast and fully reversible, and the IR drop in the film was low. High capacitive currents indicate that the desired high area surfaces were obtained. Large current densities of up to 8 kA m-2 were passed without altering the coating. The anodes have been analysed by Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray Analysis (EDAX) and the best coating conditions were found to be a sandblasted and chemically etched Ti substrate, a precursor solution containing 20 % w/v SnCl4 + 0.2 % w/v SbCl3 in 2-propanol and a decomposition temperature of 773 K.Accelerated long-term tests were carried out in a temperature-controlled beaker cell at 303 K at an applied potential of +2.2 V vs SCE in acid solution, where oxygen evolution occurred on the anode. After an initial decay in current, typical for DSA-type anodes, currents were constant. Cyclic voltammetry, SEM and EDAX before and after the lifetime tests revealed no change in coating after more than 1000 hours of continuous operation.SnO2 was deposited onto expanded titanium metal meshes and fabricated into 3-dimensional anode stacks. Mass transport properties of two different anode mesh sizes were studied using a batch recycle system including an undivided cell with the anode operating in the flow-by mode. The ferro-/ferricyanide couple was used in conjunction with linear sweep voltammetry to characterise the mass transport regime within the cell as a function of electrolyte velocity. It was confirmed that the use of stacks of SnO2 coated Ti meshes leads to a substantial enhancement of the mass transport limited current compared to a flat plate anode, and the increase in current was higher with the finer of the two types of mesh used. The increase in limiting current was proportional to the number of meshes in the stack (up to at least 8 meshes); therefore, the current scaled with the anode area. The mass transport controlled current was &gt;200 mA cm-3 for a stack of 8 fine meshes and a reactant concentration of 5 mM Fe(CN)64-. Mass transport coefficients compare well with those reported in the literature for similar materials. Velocity exponents of 0.4 - 0.6 confirm that there was turbulent flow throughout the range of velocities and different anode stacks tested.High current densities for the oxidation of EDTA were found, although the oxidation of other organic compounds (phenol, formaldehyde) showed more complex behaviour.</p

    Of toothy grins and angry snarls—Open mouth displays contribute to efficiency gains in search for emotional faces

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    Horstmann G, Lipp OV, Becker SI. Of toothy grins and angry snarls—Open mouth displays contribute to efficiency gains in search for emotional faces. Journal of Vision. 2012;12(5):7.The emotional face-in-a-crowd effect is widely cited, but its origin remains controversial, particularly with photorealistic stimuli. Recently, it has been suggested that one factor underlying the guidance of attention by a photorealistic emotional face in visual search might be the visibility of teeth, a hypothesis, however, that has not been studied systematically to date. The present experiments manipulate the visibility of teeth experimentally and orthogonally to facial emotion. Results suggest that much of the face-in-a-crowd effect with photorealistic emotional faces is due to visible teeth, and that the visibility of teeth can create a search advantage for either a happy or an angry target face when teeth visibility and facial emotion are confounded. Further analyses clarify that the teeth visibility primarily affects the speed with which neutral crowds are scanned, shedding new light on the mechanism that evokes differences in search efficiency for different emotional expressions

    Note complémentaire d’un test des déficiences circulatoires chez le Cheval

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    Camus , Sergent G., Lipp . Note complémentaire d’un test des déficiences circulatoires chez le Cheval. In: Bulletin de l'Académie Vétérinaire de France tome 106 n°1, 1953. p. 84
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