TY  - JOUR
A1  - Kerres, Karsten
A1  - Gredigk-Hoffmann, Sylvia
A1  - Jathe, Rüdiger
A1  - Orlik, Stefan
A1  - Sariyildiz, Mustafa
A1  - Schmidt, Torsten
A1  - Sympher, Klaus-Jochen
A1  - Uhlenbroch, Adrian
T1  - Future approaches for sewer system condition assessment
JF  - Water Practice & Technology
N2  - Different analytical approaches exist to describe the structural substance or wear reserve of sewer systems. The aim is to convert engineering assessments of often complex defect patterns into computational algorithms and determine a substance class for a sewer section or manhole. This analytically determined information is essential for strategic rehabilitation planning processes up to network level, as it corresponds to the most appropriate rehabilitation type and can thus provide decision-making support. Current calculation methods differ clearly from each other in parts, so that substance classes determined by the different approaches are only partially comparable with each other. The objective of the German R&D cooperation project ‘SubKanS’ is to develop a methodology for classifying the specific defect patterns resulting from the interaction of all the individual defects, and their severities and locations. The methodology takes into account the structural substance of sewer sections and manholes, based on real data and theoretical considerations analogous to the condition classification of individual defects. The result is a catalogue of defect patterns and characteristics, as well as associated structural substance classifications of sewer systems (substance classes). The methodology for sewer system substance classification is developed so that the classification of individual defects can be transferred into a substance class of the sewer section or manhole, eventually taking into account further information (e.g. pipe material, nominal diameter, etc.). The result is a validated methodology for automated sewer system substance classification.
Y1  - 2020
U6  - http://dx.doi.org/10.2166/wpt.2020.027
SN  - 1751-231X
IS  - 15 (2)
SP  - 386
EP  - 393
PB  - IWA Publishing
CY  - London
ER  - 
TY  - JOUR
A1  - Köhler, Klemens
T1  - A conflict theory perspective of IT attacks – consequences for IT security education
N2  - Cyberspace is "the environment formed by physical and non-physical components to store, modify, and exchange data using computer networks" (NATO CCDCOE). Beyond that, it is an environment where people interact. IT attacks are hostile, non-cooperative interactions that can be described with conflict theory. Applying conflict theory to IT security leads to different objectives for end-user education, requiring different formats like agency-based competence developing games.
Y1  - 2020
IS  - Preprint
ER  - 
TY  - JOUR
A1  - Köhler, Klemens
A1  - Wolf, Martin
T1  - Organisatorische Maßnahmen zu Erhöhung der IT Sicherheit – Empfehlungen aus der Perspektive der Konflikttheorie
N2  - Die NATO definiert den Cyberspace als die "Umgebung, die durch physische und nicht-physische Bestandteile zum Speichern, Ändern, und Austauschen von Daten mit Hilfe von Computer-Netzwerken" [NATO CCDCOE]. Darüber hinaus ist es ein Medium menschlicher Interaktion. IT Angriffe sind feindselige, nichtkooperative Interaktionen, die mittels Konflikttheorie beschrieben werden können. Durch die Anwendung dieses Gedankengebäudes auf IT Sicherheit von Organisationen können eine Reihe von Verbesserungen in Unternehmen identifiziert werden.
Y1  - 2020
IS  - Preprint
ER  - 
TY  - JOUR
A1  - Finger, Felix
A1  - Braun, Carsten
A1  - Bil, Cees
T1  - Impact of Battery Performance on the Initial Sizing of Hybrid-Electric General Aviation Aircraft
JF  - Journal of Aerospace Engineering
N2  - Studies suggest that hybrid-electric aircraft have the potential to generate fewer emissions and be inherently quieter when compared to conventional aircraft. By operating combustion engines together with an electric propulsion system, synergistic benefits can be obtained. However, the performance of hybrid-electric aircraft is still constrained by a battery’s energy density and discharge rate. In this paper, the influence of battery performance on the gross mass for a four-seat general aviation aircraft with a hybrid-electric propulsion system is analyzed. For this design study, a high-level approach is chosen, using an innovative initial sizing methodology to determine the minimum required aircraft mass for a specific set of requirements and constraints. Only the peak-load shaving operational strategy is analyzed. Both parallel- and serial-hybrid propulsion configurations are considered for two different missions. The specific energy of the battery pack is varied from 200 to 1,000 W⋅h/kg, while the discharge time, and thus the normalized discharge rating (C-rating), is varied between 30 min (2C discharge rate) and 2 min (30C discharge rate). With the peak-load shaving operating strategy, it is desirable for hybrid-electric aircraft to use a light, low capacity battery system to boost performance. For this case, the battery’s specific power rating proved to be of much higher importance than for full electric designs, which have high capacity batteries. Discharge ratings of 20C allow a significant take-off mass reduction aircraft. The design point moves to higher wing loadings and higher levels of hybridization if batteries with advanced technology are used.
Y1  - 2020
U6  - http://dx.doi.org/10.1061/(ASCE)AS.1943-5525.0001113
SN  - 1943-5525
VL  - 33
IS  - 3
PB  - ASCE
CY  - Reston, Va.
ER  - 
TY  - CHAP
A1  - Paulsen, Svea
A1  - Hoffstadt, Kevin
A1  - Krafft, Simone
A1  - Leite, A.
A1  - Zang, J.
A1  - Fonseca-Zang, W.
A1  - Kuperjans, Isabel
T1  - Continuous biogas production from sugarcane as sole substrate
T2  - Energy Reports
Y1  - 2020
U6  - http://dx.doi.org/10.1016/j.egyr.2019.08.035
N1  - 6th International Conference on Energy and Environment Research, ICEER 2019, 22–25 July, University of Aveiro, Portugal
VL  - 6
IS  - Supplement 1
SP  - 153
EP  - 158
PB  - Elsevier
ER  - 
TY  - JOUR
A1  - Wardoyo, Arinto Y.P.
A1  - Noor, Johan A.E.
A1  - Elbers, Gereon
A1  - Schmitz, Sandra
A1  - Flaig, Sascha T.
A1  - Budianto, Arif
T1  - Characterizing volcanic ash elements from the 2015 eruptions of bromo and raung volcanoes, Indonesia
JF  - Polish Journal of Environmental Studies
N2  - The volcanic eruptions of Mt. Bromo and Mt. Raung in East Java, Indonesia, in 2015 perturbed volcanic materials and affected surface-layer air quality at surrounding locations. During the episodes, the volcanic ash from the eruptions influenced visibility, traffic accidents, flight schedules, and human health. In this research, the volcanic ash particles were collected and characterized by relying on the detail of physical observation. We performed an assessment of the volcanic ash elements to characterize the volcanic ash using two different methods which are aqua regia extracts followed by MP-AES and XRF laboratory test of bulk samples. The analysis results showed that the volcanic ash was mixed of many materials, such as Al, Si, P, K, Ca, Ti, V, Cr, Mn, Fe, Ni, and others. Fe, Si, Ca, and Al were found as the major elements, while the others were the trace elements Ba, Cr, Cu, Mn, P, Mn, Ni, Zn, Sb, Sr, and V with the minor concentrations. XRF analyses showed that Fe dominated the elements of the volcanic ash. The XRF analysis showed that Fe was at 35.40% in Bromo and 43.00% in Raung of the detected elements in bulk material. The results of aqua regia extracts analyzed by MP-AES were 1.80% and 1.70% of Fe element for Bromo and Raung volcanoes, respectively.
Y1  - 2020
U6  - http://dx.doi.org/10.15244/pjoes/99101
SN  - 2083-5906
VL  - 29
IS  - 2
SP  - 1899
EP  - 1907
PB  - HARD
CY  - Olsztyn
ER  - 
TY  - BOOK
A1  - Heuermann, Holger
T1  - Mikrowellentechnik: Feldsimulation, nichtlineare Schaltungstechnik, Komponenten und Subsysteme, Plasmatechnik, Antennen und Ausbreitung
Y1  - 2020
SN  - 978-3-658-29023-8 (eBook)
SN  - 978-3-658-29022-1 (Print)
U6  - http://dx.doi.org/10.1007/978-3-658-29023-8
N1  - auch gedruckt in der Bereichsbibliothek Eupener Str. unter der Signatur 21 YFD 12
PB  - Springer Vieweg
CY  - Wiesbaden
ER  - 
TY  - CHAP
A1  - Elgamal, Abdelrahman
A1  - Heuermann, Holger
T1  - Design and Development of a Hot S-Parameter Measurement System for Plasma and Magnetron Applications
T2  - 2020 German Microwave Conference (GeMiC), Cottbus, Germany, 2020
Y1  - 2020
SN  - 978-3-9820397-1-8
SP  - 124
EP  - 127
ER  - 
TY  - JOUR
A1  - Abel, Alexander
A1  - Kahmann, Stephanie Lucina
A1  - Mellon, Stephen
A1  - Staat, Manfred
A1  - Jung, Alexander
T1  - An open-source tool for the validation of finite element models using three-dimensional full-field measurements
JF  - Medical Engineering & Physics
N2  - Three-dimensional (3D) full-field measurements provide a comprehensive and accurate validation of finite element (FE) models. For the validation, the result of the model and measurements are compared based on two respective point-sets and this requires the point-sets to be registered in one coordinate system. Point-set registration is a non-convex optimization problem that has widely been solved by the ordinary iterative closest point algorithm. However, this approach necessitates a good initialization without which it easily returns a local optimum, i.e. an erroneous registration. The globally optimal iterative closest point (Go-ICP) algorithm has overcome this drawback and forms the basis for the presented open-source tool that can be used for the validation of FE models using 3D full-field measurements. The capability of the tool is demonstrated using an application example from the field of biomechanics. Methodological problems that arise in real-world data and the respective implemented solution approaches are discussed.
Y1  - 2020
U6  - http://dx.doi.org/10.1016/j.medengphy.2019.10.015
SN  - 1350-4533
VL  - 77
SP  - 125
EP  - 129
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Dadfar, Dryed Mohammadali
A1  - Camozzi, Denise
A1  - Darguzyte, Milita
A1  - Roemhild, Karolin
A1  - Varvarà, Paola
A1  - Metselaar, Josbert
A1  - Banala, Srinivas
A1  - Straub, Marcel
A1  - Güver, Nihan
A1  - Engelmann, Ulrich M.
A1  - Slabu, Ioana
A1  - Buhl, Miriam
A1  - Leusen, Jan van
A1  - Kögerler, Paul
A1  - Hermanns-Sachweh, Benita
A1  - Schulz, Volkmar
A1  - Kiessling, Fabian
A1  - Lammers, Twan
T1  - Size-isolation of superparamagnetic iron oxide nanoparticles improves MRI, MPI and hyperthermia performance
JF  - Journal of Nanobiotechnology
N2  - Superparamagnetic iron oxide nanoparticles (SPION) are extensively used for magnetic resonance imaging (MRI) and magnetic particle imaging (MPI), as well as for magnetic fluid hyperthermia (MFH). We here describe a sequential centrifugation protocol to obtain SPION with well-defined sizes from a polydisperse SPION starting formulation, synthesized using the routinely employed co-precipitation technique. Transmission electron microscopy, dynamic light scattering and nanoparticle tracking analyses show that the SPION fractions obtained upon size-isolation are well-defined and almost monodisperse. MRI, MPI and MFH analyses demonstrate improved imaging and hyperthermia performance for size-isolated SPION as compared to the polydisperse starting mixture, as well as to commercial and clinically used iron oxide nanoparticle formulations, such as Resovist® and Sinerem®. The size-isolation protocol presented here may help to identify SPION with optimal properties for diagnostic, therapeutic and theranostic applications.
Y1  - 2020
U6  - http://dx.doi.org/10.1186/s12951-020-0580-1
SN  - 1477-3155
VL  - 18
IS  - Article number 22
SP  - 1
EP  - 13
PB  - Nature Portfolio
ER  - 
TY  - CHAP
A1  - Timme, Michael
T1  - Kommentierung zu den §§ 24 - 27
T2  - Münchener Kommentar zum Wettbewerbsrecht Bd. 2: Gesetz gegen Wettbewerbsbeschränkungen (GWB) §§ 1-96, 185, 186, Verfahren vor den europäischen Gerichten
Y1  - 2020
SN  - 978-3-406-72772-6
PB  - C.H. Beck
CY  - München
ET  - 3. Auflage
ER  - 
TY  - JOUR
A1  - Hailer, Benjamin
A1  - Weber, Tobias
A1  - Neveling, Sebastian
A1  - Dera, Samuel
A1  - Arent, Jan-Christoph
A1  - Middendorf, Peter
T1  - Development of a test device to determine the frictional behavior between honeycomb and prepreg layers under realistic manufacturing conditions
JF  - Journal of Sandwich Structures & Materials
N2  - In the friction tests between honeycomb with film adhesive and prepreg, the relative displacement occurs between the film adhesive and the prepreg. The film adhesive does not shift relative to the honeycomb. This is consistent with the core crush behavior where the honeycomb moves together with the film adhesive, as can be seen in Figure 2(a). The pull-through forces of the friction measurements between honeycomb and prepreg at 1 mm deformation are plotted in Figure 17(a). While the friction at 100°C is similar to the friction at 120°C, it decreases significantly at 130°C and exhibits a minimum at 140°C. At 150°C, the friction rises again slightly and then sharply at 160°C. Since the viscosity of the M18/1 prepreg resin drops significantly before it cures [23], the minimum friction at 140°C could result from a minimum viscosity of the mixture of prepreg resin and film adhesive before the bond subsequently cures. Figure 17(b) shows the mean value curve of the friction measurements at 140°C. The error bars, which represent the standard deviation, reveal the good repeatability of the tests. The force curve is approximately horizontal between 1 mm and 2 mm. The friction then slightly rises. As with interlaminar friction measurements, this could be due to the fact that resin is removed by friction and the proportion of boundary lubrication increases. Figure 18 shows the surfaces after the friction measurement. The honeycomb cell walls are clearly visible in the film adhesive. There are areas where the film adhesive is completely removed and the carrier material of the film adhesive becomes visible. In addition, the viscosity of the resin changes as the curing progresses during the friction test. This can also affect the force-displacement curve.
Y1  - 2020
U6  - http://dx.doi.org/10.1177/1099636220923986
SN  - 1530-7972
IS  - Volume 23, Issue 7
SP  - 3017
EP  - 3043
PB  - Sage
CY  - London
ER  - 
TY  - JOUR
A1  - Eggert, Mathias
A1  - Moulen, Tobias
T1  - Selektion von Geschäftsprozessen zur Anwendung von Robotic Process Automation am Beispiel einer Versicherung
JF  - HMD Praxis der Wirtschaftsinformatik
N2  - Häufig bremsen geringe IT-Ressourcen, fehlende Softwareschnittstellen oder eine veraltete und komplex gewachsene Systemlandschaft die Automatisierung von Geschäftsprozessen. Robotic Process Automation (RPA) ist eine vielversprechende Methode, um Geschäftsprozesse oberflächenbasiert und ohne größere Systemeingriffe zu automatisieren und Medienbrüche abzubauen. Die Auswahl der passenden Prozesse ist dabei für den Erfolg von RPA-Projekten entscheidend. Der vorliegende Beitrag liefert dafür Selektionskriterien, die aus einer qualitativen Inhaltanalyse von elf Interviews mit RPA-Experten aus dem Versicherungsumfeld resultieren. Das Ergebnis umfasst eine gewichtetet Liste von sieben Dimensionen und 51 Prozesskriterien, welche die Automatisierung mit Softwarerobotern begünstigen bzw. deren Nichterfüllung eine Umsetzung erschweren oder sogar verhindern. Die drei wichtigsten Kriterien zur Auswahl von Geschäftsprozessen für die Automatisierung mittels RPA umfassen die Entlastung der an dem Prozess mitwirkenden Mitarbeiter (Arbeitnehmerüberlastung), die Ausführbarkeit des Prozesses mittels Regeln (Regelbasierte Prozessteuerung) sowie ein positiver Kosten-Nutzen-Vergleich. Praktiker können diese Kriterien verwenden, um eine systematische Auswahl von RPA-relevanten Prozessen vorzunehmen. Aus wissenschaftlicher Perspektive stellen die Ergebnisse eine Grundlage zur Erklärung des Erfolgs und Misserfolgs von RPA-Projekten dar.
KW  - Robotic Process Automation
KW  - RPA
KW  - Prozessautomatisierung
KW  - Prozessverbesserung
KW  - Selektionskriterien
Y1  - 2020
U6  - http://dx.doi.org/10.1365/s40702-020-00665-0
SN  - 1436-3011
N1  - Corresponding author: Mathias Eggert
VL  - 57
IS  - 6
SP  - 1150
EP  - 1162
PB  - Springer
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Götten, Falk
A1  - Finger, Felix
T1  - PhoenAIX – Die modulare Transportdrohne
JF  - Ingenieurspiegel
N2  - Die autonome, unbemannte Luftfahrt ist einer der Schlüsselsektoren für die Zukunft der Luftfahrt. In diesem rasant wachsenden Bereich nehmen senkrecht startende und senkrecht landende Flugzeuge (Vertical Take-Off and Landing – VTOL) einen besonderen Platz ein. Ein VTOL-Flugzeug (manchmal auch „Transitionsfluggerät“ genannt) verbindet die Eigenschaft des Helikopters, überall starten und landen zu können, mit den Geschwindigkeits-, Reichweiten und Flugdauervorteilen des Starrflüglers. Grundsätzlich wird die Senkrechtstart- und -landefähigkeit sowohl von zivilen als auch von militärischen Betreibern unbemannter Fluggeräte (UAVs) gewünscht. Trotzdem bietet der Markt nur eine geringe Anzahl von VTOL-UAVs, da qualitativ hochwertige Entwürfe eine ausgesprochene Herausforderung in der Entwicklung darstellen. An der FH Aachen wird deshalb seit über 5 Jahren an der Auslegung und Analyse von solchen unbemannten VTOL Flugzeugen geforscht. Das neuste Projekt ist der Eigenentwurf einer großen, senkrechtstartenden Transportdrohne. Das „PhoenAIX“ getaufte Fluggerät wird von Falk Götten und Felix Finger im Rahmen einer EFRE-Förderung entwickelt.
Y1  - 2020
SN  - 1868-5919
N1  - Project: UAV Design
VL  - 2020
IS  - 1
SP  - 38
EP  - 40
PB  - Public Verlag
CY  - Bingen
ER  - 
TY  - JOUR
A1  - Eckert, Alexander
A1  - Abbasi, Mozhdeh
A1  - Mang, Thomas
A1  - Saalwächter, Kay
A1  - Walther, Andreas
T1  - Structure, Mechanical Properties, and Dynamics of Polyethylenoxide/Nanoclay Nacre-Mimetic Nanocomposites
JF  - Macromolecules
N2  - Nacre-mimetic nanocomposites based on high fractions of synthetic high-aspect-ratio nanoclays in combination with polymers are continuously pushing boundaries for advanced material properties, such as high barrier against oxygen, extraordinary mechanical behavior, fire shielding, and glass-like transparency. Additionally, they provide interesting model systems to study polymers under nanoconfinement due to the well-defined layered nanocomposite arrangement. Although the general behavior in terms of forming such layered nanocomposite materials using evaporative self-assembly and controlling the nanoclay gallery spacing by the nanoclay/polymer ratio is understood, some combinations of polymer matrices and nanoclay reinforcement do not comply with the established models. Here, we demonstrate a thorough characterization and analysis of such an unusual polymer/nanoclay pair that falls outside of the general behavior. Poly(ethylene oxide) (PEO) and sodium fluorohectorite form nacre-mimetic, lamellar nanocomposites that are completely transparent and show high mechanical stiffness and high gas barrier, but there is only limited expansion of the nanoclay gallery spacing when adding increasing amounts of polymer. This behavior is maintained for molecular weights of PEO varied over four orders of magnitude and can be traced back to depletion forces. By careful investigation via X-ray diffraction and proton low-resolution solid-state NMR, we are able to quantify the amount of mobile and immobilized polymer species in between the nanoclay galleries and around proposed tactoid stacks embedded in a PEO matrix. We further elucidate the unusual confined polymer dynamics, indicating a relevant role of specific surface interactions.
Y1  - 2020
U6  - http://dx.doi.org/10.1021/acs.macromol.9b01931
SN  - 1520-5835
VL  - 53
IS  - 5
SP  - 1716
EP  - 1725
PB  - ACS Publications
CY  - Washington, DC
ER  - 
TY  - CHAP
A1  - Savitskaya, Irina S.
A1  - Kistaubayeva, Aida S.
A1  - Akimbekov, Nuraly
A1  - Digel, Ilya
A1  - Shokatayeva, Dina
A1  - Zhubanova, Azhar Achmet
T1  - Prospective Use of Probiotics Immobilized on Sorbents with Nanostructured Surfaces
T2  - Carbon Nanomaterials in Biomedicine and the Environment
N2  - Activated carbons are known as excellent adsorbents. Their applications include the adsorptive removal of color, odor, taste, undesirable organic and inorganic pollutants from drinking and waste water; air purification in inhabited spaces; purification of many chemicals, pharmaceutical products and many others. This chapter elucidates the role of normal microflora in the maintenance of human health and presents materials on possible clinical displays of microecological infringements and ways of their correction. It presents new developments concerning new probiotics with immobilized Lactobacillus and Bacillus. The chapter considers the mechanisms of the intestine disbacteriosis correction by sorbed probiotics. It demonstrates the advantages and creation prospects of immobilized probiotics developed on the basis of carbonized rice husk. There are great prospects for the development of medical biotechnology due to use of carbon sorbents with a nanostructured surface. Microbial communities form a biocenosis of the biotope and together with the host organism create permanent or temporary ecosystems.
Y1  - 2020
SN  - 978-981-4800-27-3
U6  - http://dx.doi.org/10.1201/9780429428647-12
SP  - 229
EP  - 267
PB  - Jenny Stanford Publishing
CY  - Singapore
ER  - 
TY  - CHAP
A1  - Zhubanova, Azhar A.
A1  - Mansurov, Zulkhair A.
A1  - Digel, Ilya
T1  - Use of Advanced Nanomaterials for Bioremediation of Contaminated Ecosystems
T2  - Carbon Nanomaterials in Biomedicine and the Environment
N2  - This chapter shows that nanomaterials obtained by high-temperature carbonization of inexpensive plant raw material such as rice husk, grape seeds, and walnut shells can serve as a basis for the production of highly efficient microbial drugs, biodestructors, biosorbents, and biocatalysts, which are promising for the remediation of the ecosystem contaminated with heavy and radioactive metals, oil and oil products. A strong interest in engineering zymology is dictated by the necessity to address the issues of monitoring enzymatic processes, treatment, and diagnosis of a number of common human diseases, environmental pollution, quality control of pharmaceuticals and food. Nanomaterials obtained by high-temperature carbonization of cheap plant raw material such as-rice husks, grape seeds and walnut shells, can serve as a basis for creating of highly effective microbial preparations-biodestructors, biosorbents and biocatalysts, which are promising for the use of contaminated ecosystems, and for restoration of human intestine microecology.
Y1  - 2020
SN  - 978-981-4800-27-3
U6  - http://dx.doi.org/10.1201/9780429428647-18
SP  - 353
EP  - 378
PB  - Jenny Stanford Publishing
CY  - Singapore
ER  - 
TY  - JOUR
A1  - Pogorelova, Natalia
A1  - Rogachev, Evgeniy
A1  - Digel, Ilya
A1  - Chernigova, Svetlana
A1  - Nardin, Dmitry
T1  - Bacterial Cellulose Nanocomposites: Morphology and Mechanical Properties
JF  - Materials
N2  - Bacterial cellulose (BC) is a promising material for biomedical applications due to its unique properties such as high mechanical strength and biocompatibility. This article describes the microbiological synthesis, modification, and characterization of the obtained BC-nanocomposites originating from symbiotic consortium Medusomyces gisevii. Two BC-modifications have been obtained: BC-Ag and BC-calcium phosphate (BC-Ca3(PO4)2). Structure and physicochemical properties of the BC and its modifications were investigated by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), atomic force microscopy (AFM), and infrared Fourier spectroscopy as well as by measurements of mechanical and water holding/absorbing capacities. Topographic analysis of the surface revealed multicomponent thick fibrils (150–160 nm in diameter and about 15 µm in length) constituted by 50–60 nm nanofibrils weaved into a left-hand helix. Distinctive features of Ca-phosphate-modified BC samples were (a) the presence of 500–700 nm entanglements and (b) inclusions of Ca3(PO4)2 crystals. The samples impregnated with Ag nanoparticles exhibited numerous roundish inclusions, about 110 nm in diameter. The boundaries between the organic and inorganic phases were very distinct in both cases. The Ag-modified samples also showed a prominent waving pattern in the packing of nanofibrils. The obtained BC gel films possessed water-holding capacity of about 62.35 g/g. However, the dried (to a constant mass) BC-films later exhibited a low water absorption capacity (3.82 g/g). It was found that decellularized BC samples had 2.4 times larger Young’s modulus and 2.2 times greater tensile strength as compared to dehydrated native BC films. We presume that this was caused by molecular compaction of the BC structure.
Y1  - 2020
SN  - 1996-1944
U6  - http://dx.doi.org/10.3390/ma13122849
VL  - 13
IS  - 12
SP  - 1
EP  - 16
PB  - MDPI
CY  - Basel
ER  - 
TY  - JOUR
A1  - Morat, Mareike
A1  - Faude, Oliver
A1  - Hanssen, Henner
A1  - Ludyga, Sebastian
A1  - Zacher, Jonas
A1  - Eibl, Angi
A1  - Albracht, Kirsten
A1  - Donath, Lars
T1  - Agility Training to Integratively Promote Neuromuscular, Cognitive, Cardiovascular and Psychosocial Function in Healthy Older Adults: A Study Protocol of a One-Year Randomized-Controlled Trial
JF  - International Journal of Environmental Research and Public Health
N2  - Exercise training effectively mitigates aging-induced health and fitness impairments. Traditional training recommendations for the elderly focus separately on relevant physiological fitness domains, such as balance, flexibility, strength and endurance. Thus, a more holistic and functional training framework is needed. The proposed agility training concept integratively tackles spatial orientation, stop and go, balance and strength. The presented protocol aims at introducing a two-armed, one-year randomized controlled trial, evaluating the effects of this concept on neuromuscular, cardiovascular, cognitive and psychosocial health outcomes in healthy older adults. Eighty-five participants were enrolled in this ongoing trial. Seventy-nine participants completed baseline testing and were block-randomized to the agility training group or the inactive control group. All participants undergo pre- and post-testing with interim assessment after six months. The intervention group currently receives supervised, group-based agility training twice a week over one year, with progressively demanding perceptual, cognitive and physical exercises. Knee extension strength, reactive balance, dual task gait speed and the Agility Challenge for the Elderly (ACE) serve as primary endpoints and neuromuscular, cognitive, cardiovascular, and psychosocial meassures serve as surrogate secondary outcomes. Our protocol promotes a comprehensive exercise training concept for older adults, that might facilitate stakeholders in health and exercise to stimulate relevant health outcomes without relying on excessively time-consuming physical activity recommendations.
KW  - agility
KW  - prevention
KW  - healthy aging
KW  - community dwelling
KW  - psychosocial
Y1  - 2020
U6  - http://dx.doi.org/10.3390/ijerph17061853
SN  - 1660-4601
VL  - 17
IS  - 6
SP  - 1
EP  - 14
PB  - MDPI
CY  - Basel
ER  - 
TY  - THES
A1  - Bronder, Thomas
T1  - Label-free detection of tuberculosis DNA with capacitive field-effect biosensors
Y1  - 2020
U6  - http://dx.doi.org/10.17192/z2021.0056
N1  - Dissertation, Universität, Marburg 2020
PB  - Philipps-Universität Marburg
CY  - Marburg
ER  -