Permanently installed rope monitoring in conveyor systems

A permanently installed rope monitoring system can help to avoid unplanned downtimes and increase the safety level. The aim here is to set up a rope monitoring system that helps to monitor the hoisting rope as a critical component and to minimise downtimes in the context of "predictive maintenance". The already applied magnetic inductive rope testing can be used as a testing method. The paper deals with the topic of integrating such a permanently installed testing device, its use and evaluation strategies, and it identifies possibilities for new business areas for rope testing

Zur Konstruktion „humanimaler“ Emotionen in Otto Alschers Die Bärin. Natur- und Tiergeschichten aus Siebenbürgen

Les animaux sauvages occupent une place centrale dans le recueil d’histoires Die Bärin d’Otto Alscher, et les émotions, de et envers ces animaux, y jouent un rôle essentiel. Partant d’une étude en psychologie qui démontre la nécessité de recourir à plusieurs dimensions d’émotions pour comprendre celles qui se dégagent des mots ou des fragments de phrases, cet article analyse la construction linguistique des émotions dans les textes d’Otto Alscher. Il s’intéresse en particulier à la représentation de l’espace, des mouvements et de l’acoustique. En outre, l’analyse textuelle approfondit le rôle primordial des émotions morales et existentielles. Il en ressort une équivalence de la perspective humaine et animale et un rapprochement, voire une fusion des émotions des hommes et des animaux sauvages.Wildtiere nehmen in dem Geschichtenband Die Bärin von Otto Alscher einen zentralen Platz ein und Emotionen von und zu diesen Tieren spielen dabei eine bedeutende Rolle. Ausgehend von einer Studie der Psychologie, die zeigt, dass mehrere Dimensionen von Emotionen zum Erschließen von Emotionen in Wörtern oder Satzteilen nötig sind, analysiert der Aufsatz die sprachliche Konstruktion von Emotionen in Alschers Geschichten. Hierbei konzentriert er sich besonders auf die raumsemantische, kinetische und psychoakustische Gestaltung. Des Weiteren vertieft die Textanalyse die herausragende Rolle von moralischen und existentiellen Emotionen. Das Resultat ist eine Gleichwertigkeit von menschlicher und tierlicher Perspektive und eine Annäherung, wenn nicht Verschmelzung, der Emotionen von Menschen und Wildtieren

NLO QCD and electroweak corrections to W+\gamma\ production with leptonic W-boson decays

We present a calculation of the next-to-leading-order electroweak corrections to W+\gamma\ production, including the leptonic decay of the W boson and taking into account all off-shell effects of the W boson, where the finite width of the W boson is implemented using the complex-mass scheme. Corrections induced by incoming photons are fully included and find particular emphasis in the discussion of phenomenological predictions for the LHC. The corresponding next-to-leading-order QCD corrections are reproduced as well. In order to separate hard photons from jets, a quark-to-photon fragmentation function a la Glover and Morgan is employed. Our results are implemented into Monte Carlo programs allowing for the evaluation of arbitrary differential cross sections. We present integrated cross sections for the LHC at 7TeV, 8TeV, and 14TeV as well as differential distributions at 14TeV for bare muons and dressed leptons. Finally, we discuss the impact of anomalous WW\gamma\ couplings.Comment: 33 pages latex, 16 figures, typos in Table 1 correcte

Optical and chemical control of the wettability of nanoporous photoswitchable films

Wettability is a central surface property of functional thin films. Here, we present a nanoporous film made of an azobenzene-containing metal-organic framework material where the wettability is controlled by photoswitching of the fluorinated azobenzene moieties and by reversible incorporation of guest molecules with different polarities in the pores. Using both, the optical and the chemical stimuli, the water contact angle was modified over a wide range, from 23° to 97°

A general approach for all-visible-light switching of diarylethenes through triplet sensitization using semiconducting nanocrystals

Coupling semiconducting nanocrystals (NCs) with organic molecules provides an efficient route to generate and transfer triplet excitons. These excitons can be used to power photochemical transformations such as photoisomerization reactions using low energy radiation. Thus, it is desirable to develop a general approach that can efficiently be used to control photoswitches using all-visible-light aiming at future applications in life- and materials sciences. Here, we demonstrate a simple \u27cocktail\u27 strategy that can achieve all-visible-light switchable diarylethenes (DAEs) through triplet energy transfer from the hybrid of CdS NCs and phenanthrene-3-carboxylic acid, with high photoisomerization efficiency and improved fatigue resistance. The size-tunable excitation energies of CdS NCs make it possible to precisely match the clear spectral window of the relevant DAE photoswitch. We demonstrate reversible all-visible-light photoisomerization of a series of DAE derivatives both in the liquid and solid state, even in the presence of oxygen. Our general strategy is promising for fabrication of all-visible-light activated optoelectronic devices as well as memories, and should in principle be adaptable to photopharmacology

A general approach for all-visible-light switching of diarylethenes through triplet sensitization using semiconducting nanocrystals

Coupling semiconducting nanocrystals (NCs) with organic molecules provides an efficient route to generate and transfer triplet excitons. These excitons can be used to power photochemical transformations such as photoisomerization reactions using low energy radiation. Thus, it is desirable to develop a general approach that can efficiently be used to control photoswitches using all-visible-light aiming at future applications in life- and materials sciences. Here, we demonstrate a simple ‘cocktail’ strategy that can achieve all-visible-light switchable diarylethenes (DAEs) through triplet energy transfer from the hybrid of CdS NCs and phenanthrene-3-carboxylic acid, with high photoisomerization efficiency and improved fatigue resistance. The size-tunable excitation energies of CdS NCs make it possible to precisely match the clear spectral window of the relevant DAE photoswitch. We demonstrate reversible all-visible-light photoisomerization of a series of DAE derivatives both in the liquid and solid state, even in the presence of oxygen. Our general strategy is promising for fabrication of all-visible-light activated optoelectronic devices as well as memories, and should in principle be adaptable to photopharmacology

Diaryltriazolium Photoswitch: Reaching a Millisecond Cycloreversion with High Stability and NIR Absorption

The exceptional thermal stability of diarylethene closed isomers enabled many applications but also prevented utilization in photochromic systems that require rapid thermal reversibility. Herein, we report the diaryltriazolium (DAT+) photoswitch undergoing thermal cycloreversion within a few milliseconds and absorption of the closed form in the near-infrared region above 900 nm. Click chemistry followed by alkylation offers modular and fast access to the electron-deficient DAT+ scaffold. In addition to excellent fatigue resistance, the introduced charge increases water solubility, rendering this photoswitch an ideal candidate for exploring biological applications.Peer Reviewe

Optical and chemical control of the wettability of nanoporous photoswitchable films

Wettability is a central surface property of functional thin films. Here, we present a nanoporous film made of an azobenzene-containing metal-organic framework material where the wettability is controlled by photoswitching of the fluorinated azobenzene moieties and by reversible incorporation of guest molecules with different polarities in the pores. Using both, the optical and the chemical stimuli, the water contact angle was modified over a wide range, from 23° to 97°

towards chameleon detergents for 2-D gel electrophoresis

Caged non-ionic detergents, comprised of polar oligo(ethylene glycol) and non- polar alkyl chains joined by a photocleavable ortho-nitrobenzyl sulfonate linker have been synthesized and characterized. The light-triggered transformation of such chameleon surfactant from a charge-neutral into a charged form offers great potential to improve 2-D gel electrophoretic separation of complex protein mixtures

Diarylethenes in Optically Switchable Organic Light‐Emitting Diodes: Direct Investigation of the Reversible Charge Carrier Trapping Process

The design, fabrication, and characterization of optically switchable organic light-emitting diodes (OSOLEDs) based on the combination of the commercially available light-emitting polymer poly(9,9′-dioctylfluorene-alt-benzothiadiazole), F8BT, doped with a diarylethene derivative is reported. The photochromic activity of the dopant in the solid state has been investigated both via UV/vis absorption and photoluminescence spectroscopy, whereas the morphology of different blends is investigated via atomic force microscopy. OSOLEDs embedding dopant loadings of 1, 5, and 10 wt% exhibit optical responsivity with a maximum reversible optical threshold voltage shift of 4 V. The best performing devices containing 5 wt% dopant show a maximum current density and luminance ON/OFF ratio of ≈20 and ≈90, respectively. For the first time, the impact of the diarylethene isomerization on hole and electron transport has been decoupled and directly investigated, via the design, fabrication, and characterization of single-carrier switchable devices based on the same blends. Not only do these results confirm the photo-responsive trapping activity of the diarylethenes on both charge carriers, but they also demonstrate its asymmetry, with a predominant effect on electron transport that is over 3.4 times larger as compared to hole transport