TY  - JOUR
A1  - Schwager, Christian
A1  - Flesch, Robert
A1  - Schwarzbözl, Peter
A1  - Herrmann, Ulf
A1  - Teixeira Boura, Cristiano José
T1  - Advanced two phase flow model for transient molten salt receiver system simulation
JF  - Solar Energy
N2  - In order to realistically predict and optimize the actual performance of a concentrating solar power (CSP) plant sophisticated simulation models and methods are required. This paper presents a detailed dynamic simulation model for a Molten Salt Solar Tower (MST) system, which is capable of simulating transient operation including detailed startup and shutdown procedures including drainage and refill. For appropriate representation of the transient behavior of the receiver as well as replication of local bulk and surface temperatures a discretized receiver model based on a novel homogeneous two-phase (2P) flow modelling approach is implemented in Modelica Dymola®. This allows for reasonable representation of the very different hydraulic and thermal properties of molten salt versus air as well as the transition between both. This dynamic 2P receiver model is embedded in a comprehensive one-dimensional model of a commercial scale MST system and coupled with a transient receiver flux density distribution from raytracing based heliostat field simulation. This enables for detailed process prediction with reasonable computational effort, while providing data such as local salt film and wall temperatures, realistic control behavior as well as net performance of the overall system. Besides a model description, this paper presents some results of a validation as well as the simulation of a complete startup procedure. Finally, a study on numerical simulation performance and grid dependencies is presented and discussed.
KW  - Molten salt solar tower
KW  - Molten salt receiver system
KW  - Dynamic simulation
KW  - Two-phase modelling
KW  - Transient flux distribution
Y1  - 2022
U6  - http://dx.doi.org/10.1016/j.solener.2021.12.065
SN  - 0038-092X (print)
SN  - 1471-1257 (online)
VL  - 232
SP  - 362
EP  - 375
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Göttsche, Joachim
A1  - Reilly, S.
A1  - Wittwer, Volker
T1  - Advanced window systems and building energy performance / S. Reilly ; J. Göttsche ; V. Wittwer
JF  - Solar World Congress, 1991 : proceedings of the biennial congress of the International Solar Energy Society, Denver, Colorado, USA, 19-23 August 1991 / ed. by M. E. Arden ...
Y1  - 1991
SN  - 0-08-041690-X
SP  - 3211
EP  - 3216
PB  - Pergamon Press
CY  - Oxford [u.a.]
ER  - 
TY  - JOUR
A1  - Zhantlessova, Sirina
A1  - Savitskaya, Irina
A1  - Kistaubayeva, Aida
A1  - Ignatova, Ludmila
A1  - Talipova, Aizhan
A1  - Pogrebnjak, Alexander
A1  - Digel, Ilya
T1  - Advanced “Green” prebiotic composite of bacterial cellulose/pullulan based on synthetic biology-powered microbial coculture strategy
JF  - Polymers
N2  - Bacterial cellulose (BC) is a biopolymer produced by different microorganisms, but in biotechnological practice, Komagataeibacter xylinus is used. The micro- and nanofibrillar structure of BC, which forms many different-sized pores, creates prerequisites for the introduction of other polymers into it, including those synthesized by other microorganisms. The study aims to develop a cocultivation system of BC and prebiotic producers to obtain BC-based composite material with prebiotic activity. In this study, pullulan (PUL) was found to stimulate the growth of the probiotic strain Lactobacillus rhamnosus GG better than the other microbial polysaccharides gellan and xanthan. BC/PUL biocomposite with prebiotic properties was obtained by cocultivation of Komagataeibacter xylinus and Aureobasidium pullulans, BC and PUL producers respectively, on molasses medium. The inclusion of PUL in BC is proved gravimetrically by scanning electron microscopy and by Fourier transformed infrared spectroscopy. Cocultivation demonstrated a composite effect on the aggregation and binding of BC fibers, which led to a significant improvement in mechanical properties. The developed approach for “grafting” of prebiotic activity on BC allows preparation of environmentally friendly composites of better quality.
KW  - coculture
KW  - pullulan
KW  - exopolysaccharides
KW  - prebiotic
KW  - bacterial cellulose
Y1  - 2022
U6  - http://dx.doi.org/10.3390/polym14153224
SN  - 2073-4360
N1  - This article belongs to the Special Issue "Cellulose Based Composites"
VL  - 14
IS  - 15
PB  - MDPI
CY  - Basel
ER  - 
TY  - JOUR
A1  - Weber, Tobias
A1  - Ruff-Stahl, Hans-Joachim K.
T1  - Advances in Composite Manufacturing of Helicopter Parts
JF  - International Journal of Aviation, Aeronautics, and Aerospace
Y1  - 2017
U6  - http://dx.doi.org/10.15394/ijaaa.2017.1153
SN  - 2374-6793
VL  - 4
IS  - 1
ER  - 
TY  - JOUR
A1  - Bung, Daniel Bernhard
A1  - Erpicum, Sébastien
A1  - Tullis, Blanke P.
T1  - Advances in hydraulic structures engineering
JF  - Journal of Hydraulic Engineering
Y1  - 2020
U6  - http://dx.doi.org/10.1061/(ASCE)HY.1943-7900.0001851
SN  - 0733-9429 (Druckausgabe)
SN  - 1943-7900 (Online-Ausgabe)
VL  - 147
IS  - 1
PB  - ASCE
CY  - Reston, Va.
ER  - 
TY  - JOUR
A1  - Deserno, Thomas M.
A1  - Aach, Til
A1  - Amunts, Katrin
A1  - Hillen, Walter
A1  - Kuhlen, Torsten
A1  - Scholl, Ingrid
T1  - Advances in medical image processing : A special Issue on the Workshop in Aachen, Germany, March 2010
JF  - Computer Science - Research and Development. 26 (2011), H. 1-2
Y1  - 2011
SN  - 1865-2042
SP  - 1
EP  - 3
PB  - springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Hartung, Frank
A1  - Niebert, Norbert
A1  - Schieder, Andreas
A1  - Rembarz, René
T1  - Advances in network-supported media delivery in next-generation mobile systems / Hartung, Frank  ; Niebert, Norbert ; Schieder, Andreas ; Rembarz, René ; Schmid, Stefan ; Eggert, Lars
JF  - IEEE Communications Magazine. 44 (2006), H. 8
Y1  - 2006
SN  - 0163-6804
SP  - 82
EP  - 89
ER  - 
TY  - JOUR
A1  - Alexopoulos, Spiros
A1  - Hoffschmidt, Bernhard
T1  - Advances in solar tower technology
JF  - Wiley interdisciplinary reviews : Energy and Environment : WIREs
Y1  - 2017
U6  - http://dx.doi.org/10.1002/wene.217
SN  - 2041-840X
VL  - 6
IS  - 1
SP  - 1
EP  - 19
PB  - Wiley
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Henderson, Colin J.
A1  - Scheer, Nico
A1  - Wolf, C. Roland
T1  - Advances in the generation of mouse models to elucidate the pathways of drug metabolism in rodents and man
JF  - Expert Review of Clinical Pharmacology
Y1  - 2009
U6  - http://dx.doi.org/10.1586/17512433.2.2.105
SN  - 1751-2441
VL  - 2
IS  - 2
SP  - 105
EP  - 109
PB  - Taylor & Francis
CY  - London
ER  - 
TY  - JOUR
A1  - Mandekar, Swati
A1  - Holland, Abigail
A1  - Thielen, Moritz
A1  - Behbahani, Mehdi
A1  - Melnykowycz, Mark
T1  - Advancing towards Ubiquitous EEG, Correlation of In-Ear EEG with Forehead EEG
JF  - Sensors
N2  - Wearable EEG has gained popularity in recent years driven by promising uses outside of clinics and research. The ubiquitous application of continuous EEG requires unobtrusive form-factors that are easily acceptable by the end-users. In this progression, wearable EEG systems have been moving from full scalp to forehead and recently to the ear. The aim of this study is to demonstrate that emerging ear-EEG provides similar impedance and signal properties as established forehead EEG. EEG data using eyes-open and closed alpha paradigm were acquired from ten healthy subjects using generic earpieces fitted with three custom-made electrodes and a forehead electrode (at Fpx) after impedance analysis. Inter-subject variability in in-ear electrode impedance ranged from 20 kΩ to 25 kΩ at 10 Hz. Signal quality was comparable with an SNR of 6 for in-ear and 8 for forehead electrodes. Alpha attenuation was significant during the eyes-open condition in all in-ear electrodes, and it followed the structure of power spectral density plots of forehead electrodes, with the Pearson correlation coefficient of 0.92 between in-ear locations ELE (Left Ear Superior) and ERE (Right Ear Superior) and forehead locations, Fp1 and Fp2, respectively. The results indicate that in-ear EEG is an unobtrusive alternative in terms of impedance, signal properties and information content to established forehead EEG.
KW  - in-ear EEG
KW  - correlation
KW  - forehead EEG
KW  - impedance spectroscopy
KW  - biopotential electrodes
Y1  - 2022
U6  - http://dx.doi.org/10.3390/s22041568
SN  - 1424-8220
VL  - 22
IS  - 4
SP  - 1
EP  - 19
PB  - MDPI
CY  - Basel
ER  -