Liquid metal flat jet transformation under influence of transverse magnetic field. - In: ICNRP Volga 2020, (2020), 012002, insges. 7 S.
The article is devoted to an experimental study of a submerged flat jet flow in a transverse magnetic field. Two different approaches to the experimental study of jet flows are described. Detailed information about the experimental program and measuring methods presented here. The flow of a flat jet 6 mm high in a square channel with a side of 56 mm is considered. The channel is positioned so that the plane of the jet is perpendicular to the magnetic field induction. The results of measuring velocity profiles and waveforms by swivel-type probe with potential sensor are presented. Effects that can be interpreted in different ways are found: strongly unstationary flow regimes, mean flow reorganization, and development of near-wall jets. Additional experiments are prepared to obtain more detailed information about the restructuring and development of the jet. In particular, continuous measurements along the channel will be made in the presence of a slight main flow.
https://doi.org/10.1088/1742-6596/1689/1/012002
Graphene oxide influences on mechanical properties and drug release ability of hydroxyapatite based composite material. - In: Nanomaterials in biomedical application and bionsensors (NAP-2019), (2020), S. 139-149
Bioactive composite material based on hydroxyapatite (HA), sodium alginate (Alg) with different content of graphene oxide (GO) was synthesized by the wet chemistry method and characterized by TEM, XRD, FTIR, HPLC analysis. Introduced the GO nanoparticles, as well as Ca2+ ions, as cross-linker of Alg macromolecules by the beads formation, lead to enhancement of the composites mechanical properties. HA-Alg-GO10 sample with GO content of 0.004% in relation to the HA powder has a much higher Youngs modulus (1325 MPa) in comparison with GO-free HA-Alg composite (793 MPa), as well as steel sample of the same size (˜706 MPa). The addition of GO reduces the degree of the composites swelling in a phosphate buffered saline for 43% and enhances the beads shape stability. Chlorhexidine bigluconate release from GO containing samples lasts for 48 h longer according to HPLC study. The findings clear demonstrate the potential possibility of applications of the HA-Alg-GO composite material in bioengineering of bone tissue to fill bone defects of various geometries with the function of prolonged release of the drug. It is assumed that HA-Alg-GO composite material can be used in 3D modeling of areas of bone tissue that have to bear a mechanical load.
Konzepte für zuverlässige Immissionsmessungen an 5G massive MIMO-Basisstationen. - In: Creating a compatible future, (2020), S. 449-455
https://doi.org/10.15488/10057
Untersuchungen zur korrekten Immissionserfassung von gepulsten Signalen mit dem SRM-3006 am Beispiel von 5G. - In: Creating a compatible future, (2020), S. 465-471
https://doi.org/10.15488/10059
Entwicklung und Verifikation eines Mess- und Bewertungsverfahrens der elektromagnetischen Immission durch ITS-G5. - In: Creating a compatible future, (2020), S. 457-464
https://doi.org/10.15488/10058
Alternative tip- and laser- based nanofabrication up to 100 mm on flat and non-flat surfaces with subnanometre precision. - In: IWAPS 2020, (2020), insges. 4 S.
https://doi.org/10.1109/IWAPS51164.2020.9286793
Advances in epitaxial GaInP/GaAs/Si triple junction solar cells. - In: 2020 47th IEEE Photovoltaic Specialists Conference (PVSC), (2020), S. 0194-0196
https://doi.org/10.1109/PVSC45281.2020.9300594
Jamming an uncalibrated GNSS array receiver of distributed antenna elements for concealed installation in passenger cars. - In: 2020 European Navigation Conference (ENC), (2020), S. 1-10
Interference signals are a severe threat to any GNSS receiver. Due to the low reception power of satellite signals, even comparably weak interferences can significantly decrease the positioning accuracy of the receiver or lead to a complete signal loss. Therefore, any active interference signal has to be mitigated to ensure a continuous and safe operation. This is especially important in the field of automated driving, where the permanent awareness of a human being is no longer presumed and cars rely solely on GNSS to determine the absolute position necessary for navigation. While uniform rectangular arrays have shown to be the most effective method against interference signals by providing the ability to spatially mitigate incident signals, their size prevents an application in cars produced for the consumer mass market. This paper presents an arrangement, where a set of two distributed linear arrays is used, which seems promising for a concealed installation and allows the application of spatial signal processing algorithms such as beamforming and nulling. Consequences on the positioning accuracy from the joint processing of signals from distributed antenna elements are discussed and the capability to mitigate interference sources is demonstrated.
https://doi.org/10.23919/ENC48637.2020.9317483
A new approach to improve the SNR of evoked potentials using a SPHARA-based spatial filter. - In: Biomedical engineering, ISSN 1862-278X, Bd. 65 (2020), S. S240
Enthalten in: Poster Session: Biosignals
https://doi.org/10.1515/bmt-2020-6042
A Fourier transformation based convolutional neural network layer for physics-informed deep learning of magnetic dipole inversion. - In: Biomedical engineering, ISSN 1862-278X, Bd. 65 (2020), S. S32
Enthalten in: Magnetic Methods in Medicine: Bioelectromagnetism (2)
https://doi.org/10.1515/bmt-2020-6008