TY  - JOUR
A1  - Hoffstadt, Kevin
A1  - Pohen, Gino D.
A1  - Dicke, Max D.
A1  - Paulsen, Svea
A1  - Krafft, Simone
A1  - Zang, Joachim W.
A1  - Fonseca-Zang, Warde A. da
A1  - Leite, Athaydes
A1  - Kuperjans, Isabel
T1  - Challenges and prospects of biogas from energy cane as supplement to bioethanol production
JF  - Agronomy
N2  - Innovative breeds of sugar cane yield up to 2.5 times as much organic matter as conventional breeds, resulting in a great potential for biogas production. The use of biogas production as a complementary solution to conventional and second-generation ethanol production in Brazil may increase the energy produced per hectare in the sugarcane sector. Herein, it was demonstrated that through ensiling, energy cane can be conserved for six months; the stored cane can then be fed into a continuous biogas process. This approach is necessary to achieve year-round biogas production at an industrial scale. Batch tests revealed specific biogas potentials between 400 and 600 LN/kgVS for both the ensiled and non-ensiled energy cane, and the specific biogas potential of a continuous biogas process fed with ensiled energy cane was in the same range. Peak biogas losses through ensiling of up to 27% after six months were observed. Finally, compared with second-generation ethanol production using energy cane, the results indicated that biogas production from energy cane may lead to higher energy yields per hectare, with an average energy yield of up to 162 MWh/ha. Finally, the Farm²CBG concept is introduced, showing an approach for decentralized biogas production.
Y1  - 2020
U6  - https://doi.org/10.3390/agronomy10060821
SN  - 2073-4395
VL  - 10
IS  - 6
PB  - MDPI
CY  - Basel
ER  - 
TY  - JOUR
A1  - Biewendt, Marcel
A1  - Böhnert, Arno
A1  - Blaschke, Florian
T1  - The repercussions of the digital twin in the automotive industry on the new marketing logic
JF  - European Journal of Marketing and Economics
N2  - Rapid development of virtual and data acquisition technology makes Digital Twin Technology (DT) one of the fundamental areas of research, while DT is one of the most promissory developments for the achievement of Industry 4.0. 48% percent of organisations implementing the Internet of Things are already using DT or plan to use DT in 2020. The global market for DT is expected to grow by 38 percent annually, reaching USD16 billion by 2023. In addition, the number of participating organisations using digital twins is expected to triple by 2022. DTs are characterised by the integration between physical and virtual spaces. The driving idea for DT is to develop, test and build our devices in a virtual environment. The objective of this paper is to study the impact of DT in the automotive industry on the new marketing logic. This paper outlines the current challenges and possible directions for the future DT in marketing. This paper will be helpful for managers in the industry to use the advantages and potentials of DT.
KW  - industry 4.0
KW  - marketing
KW  - automotive
KW  - digital twin
Y1  - 2020
U6  - https://doi.org/10.26417/229eim64f
SN  - 2601-8659
VL  - 4
IS  - 1
SP  - 68
EP  - 73
PB  - Revistia
CY  - London
ER  - 
TY  - JOUR
A1  - Breuß, Michael
A1  - Kleefeld, Andreas
T1  - Implicit monotone difference methods for scalar conservation laws with source terms
JF  - Acta Mathematica Vietnamica
N2  - In this article, a concept of implicit methods for scalar conservation laws in one or more spatial dimensions allowing also for source terms of various types is presented. This material is a significant extension of previous work of the first author (Breuß SIAM J. Numer. Anal. 43(3), 970–986 2005). Implicit notions are developed that are centered around a monotonicity criterion. We demonstrate a connection between a numerical scheme and a discrete entropy inequality, which is based on a classical approach by Crandall and Majda. Additionally, three implicit methods are investigated using the developed notions. Next, we conduct a convergence proof which is not based on a classical compactness argument. Finally, the theoretical results are confirmed by various numerical tests.
KW  - Entropy solution
KW  - Source term
KW  - Monotone methods
KW  - Implicit methods
KW  - Finite difference methods
KW  - Conservation laws
Y1  - 2020
U6  - https://doi.org/10.1007/s40306-019-00354-1
SN  - 2315-4144
N1  - Corresponding author: Andreas Kleefeld
VL  - 45
SP  - 709
EP  - 738
PB  - Springer Singapore
CY  - Singapore
ER  - 
TY  - JOUR
A1  - Gaigall, Daniel
T1  - Hoeffding-Blum-Kiefer-Rosenblatt independence test statistic on partly not identically distributed data
JF  - Communications in Statistics - Theory and Methods
N2  - The established Hoeffding-Blum-Kiefer-Rosenblatt independence test statistic is investigated for partly not identically distributed data. Surprisingly, it turns out that the statistic has the well-known distribution-free limiting null distribution of the classical criterion under standard regularity conditions. An application is testing goodness-of-fit for the regression function in a non parametric random effects meta-regression model, where the consistency is obtained as well. Simulations investigate size and power of the approach for small and moderate sample sizes. A real data example based on clinical trials illustrates how the test can be used in applications.
KW  - Brownian Pillow
KW  - Hoeffding-Blum-Kiefer-Rosenblatt independence test
KW  - not identically distributed
KW  - random effects meta-regression model
Y1  - 2020
U6  - https://doi.org/10.1080/03610926.2020.1805767
SN  - 1532-415X
VL  - 51
IS  - 12
SP  - 4006
EP  - 4028
PB  - Taylor & Francis
CY  - London
ER  - 
TY  - CHAP
A1  - Kleefeld, Andreas
ED  - Constanda, Christian
T1  - Numerical calculation of interior transmission eigenvalues with mixed boundary conditions
T2  - Computational and Analytic Methods in Science and Engineering
N2  - Interior transmission eigenvalue problems for the Helmholtz equation play an important role in inverse wave scattering. Some distribution properties of those eigenvalues in the complex plane are reviewed. Further, a new scattering model for the interior transmission eigenvalue problem with mixed boundary conditions is described and an efficient algorithm for computing the interior transmission eigenvalues is proposed. Finally, extensive numerical results for a variety of two-dimensional scatterers are presented to show the validity of the proposed scheme.
Y1  - 2020
SN  - 978-3-030-48185-8 (Hardcover)
U6  - https://doi.org/10.1007/978-3-030-48186-5_9
SP  - 173
EP  - 195
PB  - Birkhäuser
CY  - Cham
ER  - 
TY  - CHAP
A1  - Abele, Daniel
A1  - Kleefeld, Andreas
ED  - Constanda, Christian
T1  - New Numerical Results for the Optimization of Neumann Eigenvalues
T2  - Computational and Analytic Methods in Science and Engineering
N2  - We present new numerical results for shape optimization problems of interior Neumann eigenvalues. This field is not well understood from a theoretical standpoint. The existence of shape maximizers is not proven beyond the first two eigenvalues, so we study the problem numerically. We describe a method to compute the eigenvalues for a given shape that combines the boundary element method with an algorithm for nonlinear eigenvalues. As numerical optimization requires many such evaluations, we put a focus on the efficiency of the method and the implemented routine. The method is well suited for parallelization. Using the resulting fast routines and a specialized parametrization of the shapes, we found improved maxima for several eigenvalues.
Y1  - 2020
SN  - 978-3-030-48185-8 (Print)
SN  - 978-3-030-48186-5 (Online)
U6  - https://doi.org/10.1007/978-3-030-48186-5_1
SP  - 1
EP  - 20
PB  - Birkhäuser
CY  - Cham
ER  - 
TY  - JOUR
A1  - Biewendt, Marcel
A1  - Blaschke, Florian
A1  - Böhnert, Arno
T1  - The rebound effect – a systematic review of the current state of affairs
JF  - European Journal of Economics and Business Studies
N2  - This publication is intended to present the current state of research on the rebound effect. First, a systematic literature review is carried out to outline (current) scientific models and theories. Research Question 1 follows with a mathematical introduction of the rebound effect, which shows the interdependence of consumer behaviour, technological progress, and interwoven effects for both. Thereupon, the research field is analysed for gaps and limitations by a systematic literature review. To ensure quantitative and qualitative results, a review protocol is used that integrates two different stages and covers all relevant publications released between 2000 and 2019. Accordingly, 392 publications were identified that deal with the rebound effect. These papers were reviewed to obtain relevant information on the two research questions. The literature review shows that research on the rebound effect is not yet comprehensive and focuses mainly on the effect itself rather than solutions to avoid it. Research Question 2 finds that the main gap, and thus the limitations, is that not much research has been published on the actual avoidance of the rebound effect yet. This is a major limitation for practical application by decision-makers and politicians. Therefore, a theoretical analysis was carried out to identify potential theories and ideas to avoid the rebound effect. The most obvious idea to solve this problem is the theory of a Steady-State Economy (SSE), which has been described and reviewed.
KW  - sustainability
KW  - rebound-effect
KW  - literature
KW  - systematic
KW  - critical
KW  - SSE) JEL : O33
KW  - review
Y1  - 2020
U6  - https://doi.org/10.26417/134nvy47z
SN  - 2601-8659
VL  - 6
IS  - 1
SP  - 106
EP  - 120
PB  - Revistia
CY  - London
ER  - 
TY  - JOUR
A1  - Biewendt, Marcel
A1  - Blaschke, Florian
A1  - Böhnert, Arno
T1  - An evaluation of corporate sustainability in context of the Jevons paradox
JF  - SocioEconomic Challenges
N2  - The successful implementation and continuous development of sustainable corporate-level solutions is a challenge. These are endeavours in which social, environmental, and financial aspects must be weighed against each other. They can prove difficult to handle and, in some cases, almost unrealistic. Concepts such as green controlling, IT, and manufacturing look promising and are constantly evolving. This paper aims to achieve a better understanding of the field of corporate sustainability (CS). It will evaluate the hypothesis by which Corporate Sustainability thrives, via being efficient, increasing the performance, and raising the value of the input of the enterprises to the resources used. In fact, Corporate Sustainability on the surface could seem to contradict the idea, which supports the understanding that it encourages the reduction of the heavy reliance on the use of natural resources, the overall environmental impact, and above all, their protection. To understand how the contradictory notion of CS came about, in this part of the paper, the emphasis is placed on providing useful insight to this regard. The first part of this paper summarizes various definitions, organizational theories, and measures used for CS and its derivatives like green controlling, IT, and manufacturing. Second, a case study is given that combines the aforementioned sustainability models. In addition to evaluating the hypothesis, the overarching objective of this paper is to demonstrate the use of green controlling, IT, and manufacturing in the corporate sector. Furthermore, this paper outlines the current challenges and possible directions for CS in the future.
KW  - rebound-effect
KW  - grey energy
KW  - efficiency side-effects
KW  - jevons paradox
KW  - corporate sustainability
Y1  - 2020
U6  - https://doi.org/10.21272/sec.4(3).46-65.2020
SN  - 2520-6214
VL  - 4
IS  - 3
SP  - 46
EP  - 65
PB  - ARMG Publishing
CY  - Sumy
ER  - 
TY  - JOUR
A1  - Meyer, S.
A1  - Hänel, Matthias
A1  - Beeh, B.
A1  - Dittmann-Gabriel, Sören
A1  - Dluhosch, R.
A1  - May, Martin
A1  - Herrmann, Ulf
T1  - Multifunktionaler thermischer Stromspeicher für die Strom- und Wärmeversorgung der Industrie von morgen
JF  - ETG Journal / Energietechnische Gesellschaft im VDE (ETG)
Y1  - 2020
SN  - 2625-9907
VL  - 2020
IS  - 1
SP  - 6
EP  - 9
ER  - 
TY  - JOUR
A1  - Peterson-Oster, Madeleine
A1  - Peterson, Leif Arne
T1  - Gewerbebau: Modellprojekt mit neuem elementiertem, freistehendem Fassadensystem
JF  - Bauen mit Holz, Der Zimmermann
N2  - Die im Zuge einer Betriebsübergabe anstehende Baumaßnahmen am eigenen Büro- und Produktionsgebäude boten ideale Voraussetzung zur Anwendung einer raum­-kreierenden Außenhaut. Mit der elementierten, freistehenden Eichenholz-Fassade wurde ein bis dahin weitgehend funktionales Bauwerk substanzschonend und zugleich optisch ansprechender umgestaltet.
Y1  - 2020
SN  - 0005-6545
PB  - Rudolf Müller
CY  - Köln
ER  - 
TY  - JOUR
A1  - Peterson-Oster, Madeleine
A1  - Peterson, Leif Arne
T1  - Fassadensystem: Optisch ansprechend, freistehend, elementiert und aus Eichenholz
JF  - Bauen mit Holz, Der Zimmermann
N2  - Bei der Entwicklung des Fassadensystems ging es darum die mögliche Dauerhaftigkeit von Holz bei direkter Bewitterung zu maximieren. Gleichzeitig soll gezeigt werden, dass mittels durchdachter Ansätze beim konstruktiven Holzschutz und die Wahl einer geeigneten Holzart langlebige Konstruktionen realisiert werden können.
Y1  - 2020
SN  - 0005-6545
PB  - Rudolf Müller
CY  - Köln
ER  - 
TY  - JOUR
A1  - Finkenberger, Isabel Maria
A1  - Veil, Katja
T1  - Räumliche Transformation
JF  - RaumPlanung : Fachzeitschrift für räumliche Planung und Forschung
Y1  - 2020
SN  - 0176-7534
VL  - 205
IS  - 1
SP  - 6
EP  - 11
PB  - IfR (Informationskreis für Raumplanung)
CY  - Dortmund
ER  - 
TY  - CHAP
A1  - Butenweg, Christoph
A1  - Marinković, Marko
A1  - Pavese, Alberto
A1  - Lanese, Igor
A1  - Hoffmeister, Benno
A1  - Pinkawa, Marius
A1  - Vulcu, Mihai-Cristian
A1  - Bursi, Oreste
A1  - Nardin, Chiara
A1  - Paolacci, Fabrizio
A1  - Quinci, Gianluca
A1  - Fragiadakis, Michalis
A1  - Weber, Felix
A1  - Huber, Peter
A1  - Renault, Philippe
A1  - Gündel, Max
A1  - Dyke, Shirley
A1  - Ciucci, M.
A1  - Marino, A.
T1  - Seismic performance of multi-component systems in special risk industrial facilities
T2  - Proceedings of the seventeenth world conference on earthquake engineering
N2  - Past earthquakes demonstrated the high vulnerability of industrial facilities equipped with complex process technologies leading to serious damage of the process equipment and multiple and simultaneous release of hazardous substances in industrial facilities. Nevertheless, the design of industrial plants is inadequately described in recent codes and guidelines, as they do not consider the dynamic interaction between the structure and the installations and thus the effect of seismic response of the installations on the response of the structure and vice versa. The current code-based approach for the seismic design of industrial facilities is considered not enough for ensure proper safety conditions against exceptional event entailing loss of content and related consequences. Accordingly, SPIF project (Seismic Performance of Multi- Component Systems in Special Risk Industrial Facilities) was proposed within the framework of the European H2020 - SERA funding scheme (Seismology and Earthquake Engineering Research Infrastructure Alliance for Europe). The objective of the SPIF project is the investigation of the seismic behavior of a representative industrial structure equipped with complex process technology by means of shaking table tests. The test structure is a three-story moment resisting steel frame with vertical and horizontal vessels and cabinets, arranged on the three levels and connected by pipes. The dynamic behavior of the test structure and installations is investigated with and without base isolation. Furthermore, both firmly anchored and isolated components are taken into account to compare their dynamic behavior and interactions with each other. Artificial and synthetic ground motions are applied to study the seismic response at different PGA levels. After each test, dynamic identification measurements are carried out to characterize the system condition. The contribution presents the numerical simulations to calibrate the tests on the prototype, the experimental setup of the investigated structure and installations, selected measurement data and finally describes preliminary experimental results.
KW  - industrial facilities
KW  - piping
KW  - installations
KW  - seismic loading
KW  - earthquakes
Y1  - 2021
N1  - 17. World Conference on Earthquake Engineering, 17WCEE, Sendai, Japan, 2021-09-27 - 2021-10-02
ER  - 
TY  - INPR
A1  - Ringers, Christa
A1  - Bialonski, Stephan
A1  - Solovev, Anton
A1  - Hansen, Jan N.
A1  - Ege, Mert
A1  - Friedrich, Benjamin M.
A1  - Jurisch-Yaksi, Nathalie
T1  - Preprint: Local synchronization of cilia and tissue-scale cilia alignment are sufficient for global metachronal waves
T2  - bioRxiv
N2  - Motile cilia are hair-like cell extensions present in multiple organs of the body. How cilia coordinate their regular beat in multiciliated epithelia to move fluids remains insufficiently understood, particularly due to lack of rigorous quantification. We combine here experiments, novel analysis tools, and theory to address this knowledge gap. We investigate collective dynamics of cilia in the zebrafish nose, due to its conserved properties with other ciliated tissues and its superior accessibility for non-invasive imaging. We revealed that cilia are synchronized only locally and that the size of local synchronization domains increases with the viscosity of the surrounding medium. Despite the fact that synchronization is local only, we observed global patterns of traveling metachronal waves across the multiciliated epithelium. Intriguingly, these global wave direction patterns are conserved across individual fish, but different for left and right nose, unveiling a chiral asymmetry of metachronal coordination. To understand the implications of synchronization for fluid pumping, we used a computational model of a regular array of cilia. We found that local metachronal synchronization prevents steric collisions and improves fluid pumping in dense cilia carpets, but hardly affects the direction of fluid flow. In conclusion, we show that local synchronization together with tissue-scale cilia alignment are sufficient to generate metachronal wave patterns in multiciliated epithelia, which enhance their physiological function of fluid pumping.
Y1  - 2021
U6  - https://doi.org/10.1101/2021.11.23.469646
N1  - Veröffentlicht in eLife 12:e77701 (https://doi.org/10.7554/eLife.77701).
ER  - 
TY  - CHAP
A1  - Butenweg, Christoph
A1  - Bursi, Oreste S.
A1  - Nardin, Chiara
A1  - Lanese, Igor
A1  - Pavese, Alberto
A1  - Marinković, Marko
A1  - Paolacci, Fabrizio
A1  - Quinci, Gianluca
T1  - Experimental investigation on the seismic performance of a multi-component system for major-hazard industrial facilities
T2  - Conference Proceedings: Pressure Vessels & Piping Conference Vol.5
N2  - Past earthquakes demonstrated the high vulnerability of industrial facilities equipped with complex process technologies leading to serious damage of the process equipment and multiple and simultaneous release of hazardous substances in industrial facilities. Nevertheless, the design of industrial plants is inadequately described in recent codes and guidelines, as they do not consider the dynamic interaction between the structure and the installations and thus the effect of seismic response of the installations on the response of the structure and vice versa. The current code-based approach for the seismic design of industrial facilities is considered not enough for ensure proper safety conditions against exceptional event entailing loss of content and related consequences. Accordingly, SPIF project (Seismic Performance of Multi-Component Systems in Special Risk Industrial Facilities) was proposed within the framework of the European H2020 - SERA funding scheme (Seismology and Earthquake Engineering Research Infrastructure Alliance for Europe). The objective of the SPIF project is the investigation of the seismic behaviour of a representative industrial structure equipped with complex process technology by means of shaking table tests. The test structure is a three-story moment resisting steel frame with vertical and horizontal vessels and cabinets, arranged on the three levels and connected by pipes. The dynamic behaviour of the test structure and of its relative several installations is investigated. Furthermore, both process components and primary structure interactions are considered and analyzed. Several PGA-scaled artificial ground motions are applied to study the seismic response at different levels. After each test, dynamic identification measurements are carried out to characterize the system condition. The contribution presents the experimental setup of the investigated structure and installations, selected measurement data and describes the obtained damage. Furthermore, important findings for the definition of performance limits, the effectiveness of floor response spectra in industrial facilities will be presented and discussed.
KW  - industrial facilities
KW  - piping
KW  - installations
KW  - seismic loading
KW  - earthquakes
Y1  - 2021
SN  - 9780791885352
U6  - https://doi.org/10.1115/PVP2021-61696
N1  - ASME 2021 Pressure Vessels & Piping Conference, July 13–15, 2021, Virtual, Online
PB  - American Society of Mechanical Engineers (ASME)
CY  - New York
ER  - 
TY  - CHAP
A1  - Funke, Harald
A1  - Beckmann, Nils
A1  - Keinz, Jan
A1  - Horikawa, Atsushi
T1  - 30 years of dry low NOx micromix combustor research for hydrogen-rich fuels: an overview of past and present activities
T2  - Conference Proceedings Turbo Expo: Power for Land, Sea and Air, Volume 4B: Combustion, Fuels, and Emissions
N2  - The paper presents an overview of the past and present of low-emission combustor research with hydrogen-rich fuels at Aachen University of Applied Sciences. In 1990, AcUAS started developing the Dry-Low-NOx Micromix combustion technology. Micromix reduces NOx emissions using jet-in-crossflow mixing of multiple miniaturized fuel jets and combustor air with an inherent safety against flashback. At first, pure hydrogen as fuel was investigated with lab-scale applications. Later, Micromix prototypes were developed for the use in an industrial gas turbine Honeywell/Garrett GTCP-36-300, proving low NOx characteristics during real gas turbine operation, accompanied by the successful definition of safety laws and control system modifications. Further, the Micromix was optimized for the use in annular and can combustors as well as for fuel-flexibility with hydrogen-methane-mixtures and hydrogen-rich syngas qualities by means of extensive experimental and numerical simulations. In 2020, the latest Micromix application will be demonstrated in a commercial 2 MW-class gas turbine can-combustor with full-scale engine operation. The paper discusses the advances in Micromix research over the last three decades.
KW  - Micromix
KW  - Hydrogen
KW  - Fuel-flexibility
KW  - NOx
KW  - Emissions
Y1  - 2021
SN  - 978-0-7918-8413-3
U6  - https://doi.org/10.1115/GT2020-16328
N1  - ASME Turbo Expo 2020: Turbomachinery Technical Conference and Exposition
September 21–25, 2020, Virtual, Online
N1  - Paper No. GT2020-16328, V04BT04A069
PB  - ASME
CY  - New York, NY
ER  - 
TY  - CHAP
A1  - Milijaš, Aleksa
A1  - Šakić, Bogdan
A1  - Marinković, Marko
A1  - Butenweg, Christoph
ED  - Papadrakakis, Manolis
ED  - Fragiadakis, Michalis
T1  - Experimental investigation of behaviour of masonry infilled RC frames under out-of-plane loading
T2  - Proceedings of COMPDYN 2021
N2  - Masonry infills are commonly used as exterior or interior walls in reinforced concrete (RC) frame structures and they can be encountered all over the world, including earthquake prone regions. Since the middle of the 20th century the behaviour of these non-structural elements under seismic loading has been studied in numerous experimental campaigns. However, most of the studies were carried out by means of in-plane tests, while there is a lack of out-of-plane experimental investigations. In this paper, the out-of-plane tests carried out on full scale masonry infilled frames are described. The results of the out-of-plane tests are presented in terms of force-displacement curves and measured out-of-plane displacements. Finally, the reliability of existing analytical approaches developed to estimate the out-of-plane strength of masonry infills is examined on presented experimental results.
KW  - Seismic loading
KW  - Masonry infill
KW  - Out-of-plane load
KW  - Out-of-plane strength
Y1  - 2021
SN  - 978-618-85072-5-8
U6  - https://doi.org/10.7712/120121.8528.18914
SN  - 2623-3347
N1  - COMPDYN 2021, 28-30 June 2021, Streamed from Athens, Greece, 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering
SP  - 829
EP  - 846
PB  - National Technical University of Athens
CY  - Athen
ER  - 
TY  - JOUR
A1  - Kezerashvili, Roman Ya
A1  - Dachwald, Bernd
T1  - Preface: Solar sailing: Concepts, technology, and missions II
JF  - Advances in Space Research
Y1  - 2021
U6  - https://doi.org/10.1016/j.asr.2021.01.037
SN  - 0273-1177
VL  - 67
IS  - 9
SP  - 2559
EP  - 2560
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Spietz, Peter
A1  - Spröwitz, Tom
A1  - Seefeldt, Patric
A1  - Grundmann, Jan Thimo
A1  - Jahnke, Rico
A1  - Mikschl, Tobias
A1  - Mikulz, Eugen
A1  - Montenegro, Sergio
A1  - Reershemius, Siebo
A1  - Renger, Thomas
A1  - Ruffer, Michael
A1  - Sasaki, Kaname
A1  - Sznajder, Maciej
A1  - Tóth, Norbert
A1  - Ceriotti, Matteo
A1  - Dachwald, Bernd
A1  - Macdonald, Malcolm
A1  - McInnes, Colin
A1  - Seboldt, Wolfgang
A1  - Quantius, Dominik
A1  - Bauer, Waldemar
A1  - Wiedemann, Carsten
A1  - Grimm, Christian D.
A1  - Hercik, David
A1  - Ho, Tra-Mi
A1  - Lange, Caroline
A1  - Schmitz, Nicole
T1  - Paths not taken – The Gossamer roadmap’s other options
JF  - Advances in Space Research
KW  - Solar sail
KW  - Small spacecraft
KW  - DLR-ESTEC GOSSAMER roadmap for solar sailing
KW  - GOSSAMER-1
Y1  - 2021
U6  - https://doi.org/10.1016/j.asr.2021.01.044
SN  - 0273-1177
VL  - 67
IS  - 9
SP  - 2912
EP  - 2956
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Akimbekov, Nuraly S.
A1  - Digel, Ilya
A1  - Abdieva, Gulzhamal
A1  - Ualieva, Perizat
A1  - Tastambek, Kuanysh
T1  - Lignite biosolubilization and bioconversion by Bacillus sp.: the collation of analytical data
JF  - Biofuels
N2  - The vast metabolic potential of microbes in brown coal (lignite) processing and utilization can greatly contribute to innovative approaches to sustainable production of high-value products from coal. In this study, the multi-faceted and complex coal biosolubilization process by Bacillus sp. RKB 7 isolate from the Kazakhstan coal-mining soil is reported, and the derived products are characterized. Lignite solubilization tests performed for surface and suspension cultures testify to the formation of numerous soluble lignite-derived substances. Almost 24% of crude lignite (5% w/v) was solubilized within 14 days under slightly alkaline conditions (pH 8.2). FTIR analysis revealed various functional groups in the obtained biosolubilization products. Analyses of the lignite-derived humic products by UV-Vis and fluorescence spectrometry as well as elemental analysis yielded compatible results indicating the emerging products had a lower molecular weight and degree of aromaticity. Furthermore, XRD and SEM analyses were used to evaluate the biosolubilization processes from mineralogical and microscopic points of view. The findings not only contribute to a deeper understanding of microbe–mineral interactions in coal environments, but also contribute to knowledge of coal biosolubilization and bioconversion with regard to sustainable production of humic substances. The detailed and comprehensive analyses demonstrate the huge biotechnological potential of Bacillus sp. for agricultural productivity and environmental health.
KW  - humic acid
KW  - Bacillus sp
KW  - lignite
KW  - Biosolubilization
Y1  - 2021
SN  - 1759-7277
VL  - 12
IS  - 3
SP  - 247
EP  - 258
PB  - Taylor & Francis
CY  - London
ER  -