173 research outputs found

    Following Strain-Induced Mosaicity Changes of Ferroelectric Thin Films by Ultrafast Reciprocal Space Mapping

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    We investigate coherent phonon propagation in a thin film of ferroelectric PbZr0.2Ti0.8O3 (PZT) by ultrafast x-ray diffraction (UXRD) experiments, which are analyzed as time-resolved reciprocal space mapping (RSM) in order to observe the in- and out-of-plane structural dynamics simultaneously. The mosaic structure of the PZT leads to a coupling of the excited out-of-plane expansion to in-plane lattice dynamics on a picosecond timescale, which is not observed for out-of-plane compression.Comment: 5 pages, 4 figure

    Intra-Abdominal Sarcoma Spread Risk due to Morcellation in Minimal-Invasive Myoma Surgery

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    In April 2014 the food and drug administration (FDA) discouraged the use of laparoscopic morcellation in minimal-invasive hysterectomy or myoma surgery (MIS) [2]. The American Association of Gynecological Laparoscopists [3] and the European Society of Gynecological Endoscopy [4] stated the importance of further evaluation and the necessity of scientific data-based studies before final conclusions could be taken. As the results of prospective, register-based studies can take several years to be generated, we performed a retrospective singlecenter evaluation of 10,731 uterine morcellations, being the biggest series ever, which data will be published soon. Out of the 10,731 intra-abdominal uterine morcellations in laparoscopic hysterectomy, 81.3 % showed myomata; in those 8,720 six patients histologically showed to have a leiomyosarcoma (≄ 10 mitoses per high power field). After secondary oncological surgery and a follow-up of ≄ 2 years, five women were cured; one patient died due to diffuse intra-abdominal sarcoma spread

    POWER2GAS IN GERMANY – TECHNOLOGY AND OPPORTUNITIES

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    For the future, Germany banks on renewable energy. That bears a challenge, because this energy generation heavily depends on climate conditions. Therefore, a proper storage technology is needed to ensure the energy supply all over the year. Furthermore, the expansion of renewable power plants and the power grid expansion advance in different pace. The power grid operators have to react with feed-in management actions to safe the grid against overloading. As a consequence, operators have to switch off some of their windmills if the wind blows to strong. Suitable storage technologies will help to avoid shutting down renewable power plants to generate the full energy potential. A promising technology is Power2Gas. These facilities transform electrical energy into gas, which could be stored in the huge German gas network

    Entwicklung Transkriptom-basierter Schwarzrostresistenzmarker sowie histologische und Transkriptom-basierte Charakterisierung von Kronenrostresistenzen in Lolium perenne

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    In einer vergleichenden Genexpressionsanalyse, zwischen schwarzrostresistenten und -anfĂ€lligen Lolium perenne Genotypen, wurden resistenzspezifische Transkripte und SNPs identifiziert und zur Markerentwicklung genutzt. Drei eng gekoppelte Marker wurden entwickelt. Eine „in silico“-Kartierung lokalisierte diese auf Kopplungsgruppe 2 und 7. Gegen den Kronenrost wurden eine vollstĂ€ndige und eine moderate Resistenz identifiziert. Die vollstĂ€ndige Resistenz basiert auf einem hypersensitiven Zelltod, wĂ€hrend die moderate Resistenz eine zeitlich verzögerte Rostentwicklung zeigte

    Laparoscopic Sacropexy: A Retrospective Analysis of the Subjective Outcome in 310 Cases

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    Background and Objective. The aim of this study was to assess the subjective outcome following laparoscopic sacropexy. Methods. We performed a retrospective cohort study among women treated for descensus with laparoscopic sacropexy between January 2000 and December 2007. 310 patients received questionnaires during followup assessing major pre- and postoperative symptoms and overall satisfaction. Results. 214 (69%) patients responded to the questionnaire. Mean followup was 24.5 months. The number of patients with back or lower abdominal pain, foreign body sensation in the vagina and prolapse-related symptoms, urinary symptoms, vaginal and bladder infections, and the need for pessary usage decreased significantly postsurgically. Bowel symptoms increased slightly but not significantly. Two years after surgery, nearly 2 thirds of the women were satisfied or very satisfied with the outcome. Conclusion. Laparoscopic sacropexy is an effective treatment of descensus, with favorable or satisfactory subjective outcomes

    UDKM1DSIM A simulation toolkit for 1D ultrafast dynamics in condensed matter

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    The UDKM1DSIM toolbox is a collection of MATLAB MathWorks Inc. classes and routines to simulate the structural dynamics and the according X ray diffraction response in one dimensional crystalline sample structures upon an arbitrary time dependent external stimulus, e.g. an ultrashort laser pulse. The toolbox provides the capabilities to define arbitrary layered structures on the atomic level including a rich database of corresponding element specific physical properties. The excitation of ultrafast dynamics is represented by an N temperature model which is commonly applied for ultrafast optical excitations. Structural dynamics due to thermal stress are calculated by a linear chain model of masses and springs. The resulting X ray diffraction response is computed by dynamical X ray theory. The UDKM1DSIM toolbox is highly modular and allows for introducing user defined results at any step in the simulation procedur
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