Article
Materials Science, Ceramics
Barbara Inserra, Bartolomeo Coppola, Laura Montanaro, Jean-Marc Tulliani, Paola Palmero
Summary: This study examines the printability of Ce-ZrO2/Al2O3 composites using Digital Light Processing (DLP) technology. Commercially available CeO2 and CeO2-stabilized zirconia powders were mixed with alumina to create Ce-ZA16 composite materials. The dispersion of the powders under wet conditions and the addition of a dispersant were found to significantly enhance the solid loading and sintered density. The best compromise between rheological behavior and curing depth was achieved in slurries with 70-80 wt% solid loading, resulting in fully dense and homogeneous composites.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Physics, Multidisciplinary
Bijaylaxmi Biswal, Satyanarayan Bhuyan, Dilip Kumar Mishra
Summary: Magnesia-stabilized ZrO2 @mullite composites were synthesized using conventional sintering and thermal plasma sintering techniques. The composites exhibited stable phase structure, specific bonding structure, and good microstructure. They had low dielectric constant and loss factor, and showed a non-Debye-type relaxation process at high temperatures.
EUROPEAN PHYSICAL JOURNAL PLUS
(2022)
Article
Nuclear Science & Technology
Jing Zhang, Haoyu Wang, Hongyang Wei, Jingyu Zhang, Changbing Tang, Chuan Lu, Chunlan Huang, Shurong Ding, Yuanming Li
Summary: The research results indicate that in inert matrix fuels, matrix creep effects, external hydrostatic pressure, and temperature significantly affect effective irradiation swelling, and these effects are coupled with each other.
NUCLEAR ENGINEERING AND TECHNOLOGY
(2021)
Article
Chemistry, Physical
Marta Zaborowska, Weronika Smok, Tomasz Tanski
Summary: The main goal of this study was to produce ceramic nanofibers by electrospinning and thermal treatment, and investigate the effect of calcination temperature on the properties of zirconia nanostructures. The nanofibers showed a crystalline structure with monoclinic and tetragonal phases. The optical band gap was found to be 4.9 eV and 5.6 eV for samples calcined at 500 and 600 degrees C, respectively. The nanofibers with lower energy gap and higher specific surface area exhibited significant photocatalytic activity.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Wilson Wei Sheng Ho, Hoon Kiat Ng, Suyin Gan
Summary: Heterogeneous catalyzed transesterification was used to synthesize refined palm biodiesel. The effects of reaction temperature, catalyst loading, and methanol to oil molar ratio on the biodiesel yield were studied. The highest yield of biodiesel was achieved under optimal conditions, and the reaction mechanism and kinetic parameters were determined. The produced palm biodiesel met the required standards, and the developed catalyst showed reusability.
Article
Nuclear Science & Technology
Thanh Mai Vu, Donny Hartanto, Pham Nhu Viet Ha
Summary: A small power ADS design using thorium oxide and diluent matrix reprocessed fuel is proposed, with high transmutation rate, small reactivity swing, and strong safety features. Investigation of different fuel matrices and recycled fuel compositions recovered from UO2 spent fuels revealed that transmutation of each isotope depends on TRU initial loading amount. CERCER fueled ADS demonstrated enhanced safety features and lower radiotoxicity compared to CERMET core.
NUCLEAR ENGINEERING AND TECHNOLOGY
(2021)
Article
Materials Science, Ceramics
Muhammad Shahid, Rizwan Ahmed Malik, Hussein Alrobei, Jaehwan Kim, Muhammad Latif, Azhar Hussain, Muhammad Uzair Iqbal, Azeem Hafiz
Summary: This study focuses on developing advanced ceramics with improved toughness for armor material. Different samples were made and tested, with SiCA showing highest hardness and ZTA exhibiting maximum toughness.
JOURNAL OF CERAMIC PROCESSING RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Andrei Viorel Paduraru, Adina Magdalena Musuc, Ovidiu Cristian Oprea, Roxana Trusca, Florin Iordache, Bogdan Stefan Vasile, Ecaterina Andronescu
Summary: Improved compounds of Ce(III) and Ce(IV)-doped hydroxyapatite were synthesized by the co-precipitation method. The doped hydroxyapatite showed good biocompatibility and fluorescence properties, making them suitable as luminescent labeling materials.
Article
Chemistry, Multidisciplinary
Sholpan G. Giniyatova, Artem L. Kozlovskiy, Rafael I. Shakirzyanov, Natalia O. Volodina, Dmitriy I. Shlimas, Daryn B. Borgekov
Summary: This study investigated the structural, electrical, and mechanical properties and phase composition of high-content cubic zirconium oxide ceramics stabilized with Ca. The synthesized ceramics demonstrated suitable mechanical and electrical properties and phase composition for use as a matrix for dispersed nuclear fuels.
APPLIED SCIENCES-BASEL
(2023)
Article
Materials Science, Multidisciplinary
Chiranjit Nandi, K. M. Danny, S. Bhattacharya, A. Prakash, P. G. Behere
Summary: The study discussed the phase relations and lattice parameter-composition relationships in ZrO2-PuO2 and ThO2-PuO2 systems under reducing and oxidizing conditions. Different phases were observed with varying compositions, and changes in lattice parameters were noted. These findings provide insights into the behavior of plutonium incorporation in zirconia and thoria matrices for transmutation and disposal applications.
JOURNAL OF NUCLEAR MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Sahar Raissi, Afef Najjari, Mohamed Kadri Younes
Summary: This study aimed to synthesize zirconia doped with cobalt aerogel and xerogel solids using solgel procedure. The synthesized nanoparticles were characterized and tested for antimicrobial activity against Gram-positive and Gram-negative pathogenic bacteria. The results showed that the synthesized Co/Zr aerogels had spherical shapes with nanometric sizes and exhibited higher antibacterial activity against Escherichia coli, Klebsiella pneumoniae, and Staphylococcus aureus.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Ceramics
Maryam Abolfazli, Mohammad Hossein Paydar
Summary: In this study, AMZG refractory composite was fabricated and its physical, mechanical, and chemical properties were investigated. The optimal composition and conditions for the best specimen were determined.
JOURNAL OF CERAMIC PROCESSING RESEARCH
(2022)
Article
Materials Science, Ceramics
Muhan Wu, Ao Huang, Yanzhu Huo, Huazhi Gu, Lvping Fu
Summary: By utilizing a thermite reaction at high temperatures in an air atmosphere, macro-sized tubular MgO crystals with porous structures were synthesized successfully. The morphology and densification of the MgO tube could be easily controlled by manipulating the shape of the Al2O3 lid and the reaction temperature.
CERAMICS INTERNATIONAL
(2022)
Article
Energy & Fuels
Michael D. Garrison, C. Luke Keller, Josanne-Dee Woodroffe, Eric M. Nagel, Benjamin G. Harvey
Summary: Apopinene was synthesized from myrtenal using catalytic decarbonylation followed by hydrogenation or cyclopropanation. The fuel properties of apopinene and its derivatives were evaluated. The cyclopropanated apopinene exhibited high density, exceptional net heat of combustion, and excellent low temperature properties, while dihydroapopinene had a high freezing point limiting its application as a jet fuel blendstock.
Article
Automation & Control Systems
Samuel Olukayode Akinwamide, Mabontle Maleka, Nthabiseng Motabeni, Ojo Jeremiah Akinribide, Falodun Eso Oluwasegun, Peter Apata Olubambi
Summary: This research focuses on the characterization of microstructure and evaluation of nanomechanical properties of hybrid aluminium-based composites, which were fabricated by reinforcing pure aluminium matrix with zirconia and ferrotitanium particles. The results show that mixing and sintering the admixed powders at high temperature resulted in the formation of new phases, leading to improved mechanical performance of the composites. Nanoindentation test confirmed the homogeneous dispersion of reinforcement particles. The composites reinforced with 5% TiFe and 5% ZrO2 exhibited the most improved mechanical properties.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Public, Environmental & Occupational Health
Eva Hungerland, Ute Sonntag, Wolf Polenz, Vincenzo Cusumano, Kurt Glaeser, Claudia Hildebrand, Andreas Tesche, Thomas Hartmann
Summary: The article aims to present complex structures and developments in the context of the German Prevention Act, highlighting requirements that have not been implemented at the interface between universities. It focuses on the implementation of action recommendations at the state level and targeted addressing of responsible actors, including universities and student unions.
PRAVENTION UND GESUNDHEITSFORDERUNG
(2022)
Article
Neurosciences
Quirin Gehmacher, Patrick Reisinger, Thomas Hartmann, Thomas Keintzel, Sebastian Rosch, Konrad Schwarz, Nathan Weisz
Summary: This study found that the auditory nerve in cochlear implant users is sensitive to selective attention, and the relevant neural activity can be decoded from single-trial data. These findings have important implications for the future development of cochlear implant technology and closed-loop systems.
JOURNAL OF NEUROSCIENCE
(2022)
Correction
Behavioral Sciences
Nina Suess, Thomas Hartmann, Nathan Weisz
Article
Environmental Sciences
Pavel Raska, Nejc Bezak, Carla S. S. Ferreira, Zahra Kalantari, Kazimierz Banasik, Miriam Bertola, Mary Bourke, Artemi Cerda, Peter Davids, Mariana Madruga de Brito, Rhys Evans, David C. Finger, Rares Halbac-Cotoara-Zamfir, Mashor Housh, Artan Hysa, Jiri Jakubinsky, Marijana Kapovic Solomun, Maria Kaufmann, Saskia Keesstra, Emine Keles, Silvia Kohnova, Michele Pezzagno, Kristina Potocki, Samuel Rufat, Samaneh Seifollahi-Aghmiuni, Arthur Schindelegger, Mojca Sraj, Gintautas Stankunavicius, Jannes Stolte, Ruzica Stricevic, Jan Szolgay, Vesna Zupanc, Lenka Slavikova, Thomas Hartmann
Summary: This paper examines the implementation barriers of Nature-Based Solutions (NBS) in flood risk management and suggests avenues for further research, emphasizing the need for a transdisciplinary approach in studying NBS.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Engineering, Civil
Ehsan Nouzari, Thomas Hartmann, Tejo Spit
Summary: This paper examines the correlation between interactive governance and stakeholder satisfaction through standardized quantitative longitudinal research, and demonstrates a statistically positive relationship between the two.
WATER INTERNATIONAL
(2022)
Article
Environmental Sciences
K. Potocki, T. Hartmann, L. Slavikova, D. Collentine, K. Veidemane, P. Raska, J. Barstad, R. Evans
Summary: This article discusses the interconnections between land policy, flood risk management (FRM), and private land ownership. It argues for a more process-oriented approach, with a focus on land management and small-scale measures.
Article
Environmental Studies
Arend Jonkman, Rick Meijer, Thomas Hartmann
Summary: The struggle of cities to achieve quantitative housing objectives can be explained by the increasing conflicts with other qualitative policy objectives.
Article
Chemistry, Applied
Werner Arnold, Ernst Rottenkolber, Thomas Hartmann
Summary: This article highlights the relevance of Richard Becker's work on shock waves and detonation, specifically his work on the BKW EOS. It presents the thermo-chemical code Dragon and demonstrates its application in the design of a modern high explosive, using the development of PBX KS23 as an example. The article describes the experimental development steps of KS23 and the underlying theoretical work.
PROPELLANTS EXPLOSIVES PYROTECHNICS
(2023)
Article
Development Studies
Mark Koelman, Thomas Hartmann, Tejo J. M. Spit
Summary: The transition to renewable energy future requires expanding high voltage grids, but land use issues have led to opposition from landowners. However, the reasons for supporting or objecting to grid development are not solely based on financial gain, as landowners also value fair distribution of benefits and disadvantages.
JOURNAL OF ENVIRONMENTAL POLICY & PLANNING
(2023)
Article
Computer Science, Software Engineering
Joe Lorentz, Thomas Hartmann, Assaad Moawad, Francois Fouquet, Djamila Aouada, Yves Le Traon
Summary: This article introduces CalcGraph, a model abstraction of differential programming layers, which can simulate the usage of computational resources and automatically schedule execution based on specified specifications. We propose a novel method for switching models between storage and preallocated memory zones efficiently, maximizing the number of model executions given the available resources. The efficiency of our approach is demonstrated by consuming fewer resources than state-of-the-art frameworks like TensorFlow and PyTorch for single-model and multi-model execution.
SOFTWARE AND SYSTEMS MODELING
(2023)
Article
Environmental Sciences
Peter R. R. Davids, Sally Priest, Thomas Hartmann
Summary: This paper examines the role of flood risk experts in supporting homeowners in implementing property-level flood risk adaptation measures. Homeowners can reduce their flood risks by implementing such measures, but they often require expert advice on the appropriate actions and methods. However, providing information alone is often insufficient to motivate homeowners to take action. This paper investigates how expert advice can be more effective by considering homeowners' rationalities and suggests strategies for experts to enhance their risk communication skills to engage homeowners in flood risk governance.
JOURNAL OF FLOOD RISK MANAGEMENT
(2023)
Article
Environmental Studies
Josje Bouwmeester, Jean-David Gerber, Thomas Hartmann, Deniz Ay
Summary: In many urban areas, governments are struggling to curb urban sprawl while also dealing with growing pressures on the housing market. As a result, housing developments increasingly occur within existing housing stock through soft densification in the form of subdivisions. Municipalities aim to regulate this type of densification due to pressures on existing infrastructure, neighborhood cohesion, and prices.
Article
Regional & Urban Planning
Peter Lacoere, Andreas Hengstermann, Mathias Jehling, Thomas Hartmann
Summary: Most spatial planning systems focus on growth and upzoning, but the importance of downzoning is increasing due to the need for net land neutrality in European planning. Compensation schemes for landowners losing their development rights are crucial for planners, and our comparative study shows the differences and importance of feasible and affordable compensation schemes in the European context for adaptable planning.
PLANNING THEORY & PRACTICE
(2023)
Article
Geosciences, Multidisciplinary
L. Junger, P. Davids, G. Stoeglehner, T. Hartmann
Summary: This study examines the multidimensional resilience in the context of flood recovery, finding that the physical, social, and financial dimensions are all part of the recovery process. Conflicting impacts and dependencies exist between these dimensions, necessitating coordination and trade-offs.
INTERNATIONAL JOURNAL OF DISASTER RISK REDUCTION
(2023)
Article
Water Resources
Mattia Bosoni, Barbara Tempels, Thomas Hartmann
Summary: This study explores the integration of the multi-layer safety approach in flood risk management through a case study in Zwolle. The findings show that while spatial planning has integrated flood risk management, disaster management remains detached from the other layers.
INTERNATIONAL JOURNAL OF RIVER BASIN MANAGEMENT
(2023)
Article
Materials Science, Multidisciplinary
Liuming Wei, Jingwen Li, Yonggang Li, Qirong Zheng, Fan Cheng, Chuanguo Zhang, Jingyu Li, Gaofeng Zhao, Zhi Zeng
Summary: This study investigates the influence of He-V complexes on H behaviors on different W surfaces using DFT calculations. The results show that H dissolution is most difficult but H trapping is easiest on the W (110) surface, while the opposite is true on the W (111) surface. Moreover, the presence of He-V complexes increases the difficulty of H diffusion from bulk to surface and desorption.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Yan Meng, Song Zeng, Chen Chen, Chaowen Zhu, Huahai Shen, Xiaosong Zhou, Xiaochun Han
Summary: The characteristics of magnetron sputtered Cr coatings vary with different temperature, bias voltage, and pressure. Coatings with random orientation, good crystallinity, and small grain size exhibit favorable oxidation behavior, while coatings with strong (200) texture, poor crystallinity, and large grains have many intrinsic defects that are detrimental to the protection property of the Cr coatings.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Xinyuan Xu, Zefeng Yu, Wei-Ying Chen, Aiping Chen, Arthur Motta, Xing Wang
Summary: This study presents an automated approach for characterizing grain morphology in TEM images recorded during ion irradiation. By combining a machine learning model and a computer vision algorithm, comparable results to human analysis can be achieved with significantly reduced analysis time. Researchers can train their own models following the procedures described in this study to automate grain morphology analysis of their own TEM images.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Shihao Wu, Dong Wang, Yapei Zhang, Koji Okamoto, Marco Pellegrini, Wenxi Tian, Suizheng Qiu, G. H. Su
Summary: The oxidation and degradation mechanisms of Cr coating on Zr alloy cladding under high temperature steam atmosphere are summarized, and a mathematical analysis model is established to predict the changes in coating thickness. The model is applied in the analysis of structure evolution under different conditions.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
V. Diaz-Mena, J. de Prado, M. Roldan, I. Izaguirre, M. Sanchez, M. Rieth, A. Urena
Summary: The brazeability of a cupronickel alloy was evaluated as a filler alloy for high-temperature joining of tungsten to steel. The study investigated the brazing conditions and the impact of the selected filler on the joint quality using numerical software. The results showed different metallurgical interactions and diffusion phenomena between the filler alloy and the base materials at different temperatures. The study emphasized the importance of selecting a suitable filler to mitigate residual stresses in the joints.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Pengcheng Zhu, Yajie Zhao, Yan-Ru Lin, Jean Henry, Steven J. Zinkle
Summary: This study investigates the effect of heavy-ion irradiation on radiation hardening in high-purity binary alloy Fe18Cr. Nanoindentation testing and high-quality TEM imaging were conducted to extract hardness and microstructure information. The strength factor was accurately calculated based on the detailed TEM characterization of irradiated microstructures, and a refined hardening superposition method was applied to quantify the mechanical properties of ion-irradiated materials.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Bin Wu, Haixia Ning, Hanzhen Zhu, Jianjun Chen, Kang Wang, Daiyu Zhang, Fu Wang, Qilong Liao
Summary: This study discusses the effects of ZrO2 and B2O3 on the phase composition and properties of SAP-based glass-ceramics. The results show that ZrO2 addition improves the formation of NZP phase while restricting the crystallization of AlPO4 phases. The correct ratios of ZrO2 and B2O3 allow only the formation of NZP phase within the SAP glass.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Hwasung Yeom, Greg Johnson, Benjamin Maier, Tyler Dabney, Kumar Sridharan
Summary: Cr-Nb bilayer coatings were developed using cold spray deposition to improve the limiting operational temperature of Cr-coated Zr-alloy system. The coatings exhibited outstanding oxidation resistance at high temperatures and formed continuous intermetallic compound layers at the interfaces.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Padhraic L. Mulligan, Andrew T. Nelson, Chad M. Parish, Patrick A. Champlin, Xiang Chen, Daniel Morrall, Jason M. Harp
Summary: Environmental barrier coatings are being developed to reduce oxidation and embrittlement in Zr-based materials. Chromium nitride is a candidate for this application, but understanding its impact on irradiation-induced creep and microstructure is critical.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Dexuan Yan, Xinlei Cao, Ke Shen
Summary: This study investigated the purification mechanism of polycrystalline graphite by comparing IG-11 graphite with IG-110 nuclear grade graphite. The analysis revealed that metallic impurities in IG-11 were primarily segregated within graphite porosities, while IG-110 demonstrated a significant reduction in impurities. This research contributes to the development of innovative graphite purification techniques for greater purity and stronger oxidation resistance.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Wei Xu, Wei Peng, Lei Shi, Qi Sun
Summary: This paper investigates the oxidation and shape evolution of matrix graphite in high temperature gas-cooled reactors during air-ingress accidents. A reaction kinetics model is established and computational fluid dynamics with a dynamic mesh method is used to simulate the oxidation process. The results show that the geometric shape of graphite changes significantly with increasing flow rate, and the graphite pebbles tend to form a structure with a narrow front and wide tail.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Allison Harward, Casey Elliott, Michael Shaltry, Krista Carlson, Tae-Sic Yoo, Guy Fredrickson, Michael Patterson, Michael F. Simpson
Summary: This paper investigates the hygroscopic properties of eutectic LiCl-KCl absorbed into zeolite-4A. The study finds that water absorption and corrosion worsen with increasing salt loading. It also suggests that the salt can be stored in a non-inert atmosphere for a certain period of time.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Takaaki Koyanagi, Xunxiang Hu, Christian M. Petrie, Gyanender Singh, Caen Ang, Christian P. Deck, Weon-Ju Kim, Daejong Kim, James Braun, Yutai Katoh
Summary: This study provides critical experimental data on the effects of irradiation on the hermeticity of SiC composite cladding, finding that irradiation can cause a decrease in hermeticity and cracking, and coating the outer surface can mitigate the cracking issue.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
S. Krat, A. Prishvitsyn, Yu. Gasparyan
Summary: This study proposes a probabilistic and diffusion-based model to describe the co-deposition of multiple hydrogen isotopes with slowly grown metal layers. The model calculates the relative concentrations of different hydrogen isotopes in the co-deposited metal layers. It is found that if hydrogen isotopes have different detrapping energies, only the isotope with the highest detrapping energy shows a monotonic decrease in concentration with deposition temperature. Furthermore, the study evaluates the uncertainty of tritium concentration in the co-deposited layer based on the uncertainty in detrapping energy of tritium and deuterium, predicting a >10% tritium concentration uncertainty for a 0.01 eV difference.
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Tijo Vazhappilly, Arup Kumar Pathak
Summary: This study investigates the effect of Ce atom substitution in UO2 on its thermophysical properties using density functional theory. The results show that the Ce substitution levels and the oxidation state of Ce/U atoms strongly influence the band structure and specific heat capacity of the UO2 lattice. These findings provide important insights into the fuel properties of UO2 under reactor conditions.
JOURNAL OF NUCLEAR MATERIALS
(2024)
