Grundlagen der Solarenergieumwandlung auf der Basis von Fluoreszenzkollektoren.

Der Schwerpunkt der Arbeiten lag in der Messung und Untersuchung von Fluoreszenzfarbstoffen und transparenten Matrixmaterialien hinsichtlich ihrer Eignung für den Einsatz in Fluoreszenzkollektoren. Im sichtbaren Spektralbereich konnte dabei auf neue Farbstoffentwicklungen aus dem Displayanwendungsgebiet zurückgegriffen werden. Insgesamt zeigte es sich, daß im sichtbaren Spektralbereich die Kombination von organischem Farbstoff und Plexiglas zu brauchbaren Ergebnissen sowohl hinsichtlich des Wirkungsgrades wie auch der Stabilität führen kann. In beiden Teilbereichen konnten im Laufe des Vorhabens Verbesserungen erzielt werden. Ein praktischer Einsatz ist jedoch.derzeit noch nicht möglich. Erste Versuchskollektoren befinden sich im Dauerversuch auf einem Freiluftmeßstand. Im roten bzw. infraroten Spektralbereich sind die Eigenschaften der Farbstoffe bzw. Kollektoren noch nicht ausreichend. Eine spezielle Farbstoffentwicklung auf diesem Gebiet hat im Frühjahr 1980 bei der Industrie begonnen

Hygiene guideline for the planning, installation, and operation of ventilation and air-conditioning systems in health-care settings – Guideline of the German Society for Hospital Hygiene (DGKH)

Since the publication of the first “Hospital Hygiene Guideline for the implementation and operation of air conditioning systems (HVAC systems) in hospitals” () in 2002, it was necessary due to the increase in knowledge, new regulations, improved air-conditioning systems and advanced test methods to revise the guideline. Based on the description of the basic features of ventilation concepts, its hygienic test and the usage-based requirements for ventilation, the DGKH section “Ventilation and air conditioning technology” attempts to provide answers for the major air quality issues in the planning, design and the hygienically safe operation of HVAC systems in rooms of health care

JUVIL: A new innovative software framework for data analysis of JET imaging systems intended for the study of plasma physics and machine operational safety

A new powerful software framework JUVIL (JET Users Video Imaging Library) has been developed and successfully installed at JET for fast data visualization and advanced analysis of all types of imaging data. The JUVIL framework is based on modular object-oriented components implemented in Python to simplify work with JET scientific data. It provides standard interfaces to access video data and post-processing, which are highly configurable and can be easily extended and adapted for new data formats and imaging cameras. One of the GUI components is the video player, widely used during the last JET campaign. It displays the video data for NIR/IR/VIS cameras and automatically carries out the post-processing (image rotation, data format conversion, scaling of non-interlaced fields to full frames)

Subjektive Bewaeltigungsstrategien jugendlicher Arbeitsloser und moegliche Konsequenzen fuer sozial-paedagogische Interventionen im kommunalen Bereich Zusammenfassung

SIGLEUuStB Koeln(38)-890107109 / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

Optimizations of pulsed plated p and n-type Bi₂Te₃-based ternary compounds by annealing in different ambient atmospheres

This work presents a comprehensive study of the fabrication and optimization of electrodeposited p- and n-type thermoelectric films. The films are deposited on Au and stainless steel substrates over a wide range of deposition potentials. The influence of the preparative parameters such as the composition of the electrolyte bath and the deposition potential are investigated. Furthermore, the p-doped (BixSb1-x)2Te3 and the n-doped Bi2(TexSe1-x)3 films are annealed for a period of about 1 h under helium and under tellurium atmosphere at 250 degrees C for 60h. Annealing in He already leads to significant improvements in the thermoelectric performance. Furthermore, due to the equilibrium conditions during the process, annealing in Te atmosphere leads to a strongly improved film composition, charge carrier density and mobility. The Seebeck coefficients increase to values up to +182 mu V K-1 for p-doped and130 mu V K-1 for n-doped materials at room temperature. The power factors also exhibit improvements with 1320 mu W m-1 K-2 and 820 mu W m-1 K-2 for p-doped and n-doped films, respectively. Additionally, in-situ XRD measurements performed during annealing of the films up to 600K under He atmosphere show stepwise improvements of the crystal structure leading to the improvements in thermoelectric parameters. The thermal conductivity is between 1.2 W m-1 K-1 and 1.0 W m-1 K-1

Response of the imaging cameras to hard radiation during JET operation

The analysis of the radiation damage of imaging systems is based on all different types-of aiialoiue/digital cameras with uncooled as well as actively cooled image sensors in the VIS/NIR/MWIR spectral ranges. The Monte Carlo N-Particle (MCNP) code has been used to determine the neutron fluence at different camera locations in JET. An explicit link between the sensor damage and the neutron fluence has been observed. Sensors show an increased dark-current and increased numbers of hot-pixels. Uncooled cameras must be replaced once per year after exposure to a neutron fluence of similar to 1.9-3.2 x 10(12)neutrons/cm(2). Such levels of fluence will be reached after approximate to 14-22 ELMy H-mode pulses during the future D-T campaign. Furthermore, dynamical noise seen as a random pattern of bright pixels was observed in the presence of hard radiation (neutrons and gammas). Failure of the digital electronics inside the cameras as well as of industrial controllers is observed beyond a neutron fluence of about similar to 4 x 10(9) neutrons/cm(2). The impact of hard radiation on the different types of electronics and possible application of cameras during future D-T campaign is discussed

Serum Levels of MicroRNA-371a-3p (M371 Test) as a New Biomarker of Testicular Germ Cell Tumors: Results of a Prospective Multicentric Study

PURPOSE Previous studies suggested that serum levels of microRNA (miR)-371a-3p (so-called M371 test) have a much higher sensitivity and specificity than the classic markers of testicular germ cell tumors (GCTs) and are applicable toward both seminoma and nonseminoma. We sought to confirm the usefulness of this test as a novel biomarker for GCT. PATIENTS AND METHODS In a prospective, multicentric study, serum samples of 616 patients with testicular GCTs and 258 male controls were examined for serum levels of miRNA-371a-3p (miR levels) by quantitative polymerase chain reaction. The GCT population encompassed 359 patients with seminoma and 257 with nonseminoma; 371 had clinical stage I disease, 201 had systemic disease, and 46 had relapses. Paired measurements before and after orchiectomy were performed in 424 patients; 118 with systemic disease had serial measurements during treatment. miR levels were compared with those of beta-human chorionic gonadotropin, alpha-fetoprotein, and lactate dehydrogenase. RESULTS For the primary diagnosis of GCT, the M371 test showed a sensitivity of 90.1%, a specificity of 94.0%, an area under the curve of 0.966 upon receiver operating characteristic analysis, and a positive predictive value of 97.2%. alpha-Fetoprotein, beta-human chorionic gonadotropin, and lactate dehydrogenase had sensitivities of less than 50% in seminoma and slightly higher sensitivities in nonseminomas. miR levels were significantly associated with clinical stage, primary tumor size, and response to treatment. Relapses had elevated miR levels that subsequently dropped to normal upon remission. Teratoma did not express miR-371a-3p. CONCLUSION The M371 test outperforms the classic markers of GCT with both a sensitivity and a specificity greater than 90%. All histologic subgroups, except teratoma, express this marker. The test could be considered for clinical implementation after further validation. (C) 2019 by American Society of Clinical Oncolog