bluuebunny/crossref_metadata_2025_split huggingface dataset:
Octonionic Magical Supergravity, Niemeier Lattices, and Exceptional & Hilbert Modular Forms
Authors: Günaydin Murat , Kidambi Abhiram 
Published: January 2024

AbstractThe quantum degeneracies of Bogomolny‐Prasad‐Sommerfield (BPS) black holes of octonionic magical supergravity in five dimensions are studied. Quantum degeneracy is defined purely number theoretically as the number of distinct states in charge space with a given set of invariant labels. Quantum degeneracies of spherically symmetric stationary BPS black holes are given by the Fourier coefficients of modular forms of exceptional group . Their charges take values in the lattice defined by the exceptional Jordan algebra over integral octonions. The quantum degeneracies of rank 1 and rank 2 BPS black holes are given by the Fourier coefficients of singular modular forms and . The rank 3 (large) BPS black holes will be studied elsewhere. Following the work of N. Elkies and B. Gross on embeddings of cubic rings A into the exceptional Jordan algebra we show that the quantum degeneracies of rank 1 black holes described by such embeddings are given by the Fourier coefficients of the Hilbert modular forms (HMFs) of . If the discriminant of the cubic ring A is with p a prime number then the isotropic lines in the 24 dimensional orthogonal complement of A define a pair of Niemeier lattices which can be taken as charge lattices of some BPS black holes. The current status of the searches for the M/superstring theoretic origins of the octonionic magical supergravity is also reviewed.
Role of dietary supplements in the continuous battle against COVID‐19
Authors: Zaman Rahela , Ravichandran Vignesh , Tan Chung Keat 
Published: January 2024

AbstractA sudden outbreak of the COVID‐19 pandemic was a big blow to the world community on every level. Created by a novel coronavirus, SARS‐CoV‐2, which was previously unknown to the human immune system. The expert opinion almost immediately united on the fact that the most effective way of fighting the pandemic would be by building immunity artificially via a mass immunization program. However, it took about a year for the approval of the first vaccine against COVID‐19. In the meantime, a big part of the general population started adapting nutritious diet plans and dietary supplements to boost natural immunity as a potential prophylactic strategy against SARS‐CoV‐2 infection. Whether they originate from mainstream medicine, such as synthetic supplements, or traditional herbal remedies in the form of single or poly‐herbs, these supplements may comprise various components that exhibit immunomodulatory, anti‐inflammatory, antioxidant, and antimicrobial characteristics. There is a substantial body of predictions and expert opinions suggesting that enhancing one's diet with dietary supplements containing additional nutrients and bioactive compounds like vitamins, minerals, amino acids, fatty acids, phytochemicals, and probiotics can enhance the immune system's ability to develop resistance against COVID‐19, although none of them have any conclusive evidence nor officially recommended by World Health Organization (WHO). The current review critically acclaims the gap between public perception‐based preference and real evidence‐based study to weigh the actual benefit of dietary supplements in relation to COVID‐19 prevention and management.
Finite‐time stabilization for a class of more general p‐normal nonlinear systems with input and output nonlinearities
Authors: Zhang Jiao‐Jun , Song Zhibao , Li Ying 
Published: January 2024

AbstractThis study investigates the global finite‐time state feedback stabilization for a class of more general p‐normal nonlinear systems subjects to input time‐delay and uncertain output function under rational powers. A novel control input compensation signal comprising a finite integral of previous control values is presented, and an equivalent system with control input dependent‐free time delay is obtained by introducing a variable transformation technique that includes the compensation signal. A suitable controller is designed in line with the homogeneous domination method to ensure the globally finite‐time stability of the closed‐loop system. Finally, the effectiveness of the proposed control scheme is verified through a numerical simulation and an induction heater circuit system.
Unleashing the dynamic linkages among natural resources, economic complexity, and sustainable economic growth: Evidence from G‐20 countries
Authors: Zhang Can , Waris Umra , Qian Leren , Irfan Muhammad , Rehman Mubeen Abdur 
Published: January 2024

AbstractThis research delves into whether access to natural resources is a blessing or a curse, a matter of contention within contemporary literature. Lacking conclusive evidence, particularly within the G‐20 countries, this study endeavors to establish the intricate linkages between economic development, natural resources, and economic complexity. A subset of G‐20 economies from 1990 to 2021 was used to analyze the results of the second‐generation CS‐ARDL model. After accounting for variables like corruption, total labor force, gross capital formation, trade openness, and inflow of foreign direct investment, we find that natural resources, economic complexity, corruption and gross capital formation are significant and adverse predictors of economic growth. Natural resource dependence is susceptible to price fluctuations and sustainability concerns, economic complexity may introduce market volatility challenges, corruption erodes trust and transparency, and excessive gross capital formation can lead to economic imbalances. On the other hand, economic growth is positively impacted by the additional effects of the control variables, including foreign direct investment, trade openness and labor force. In crafting its policy recommendations, this study artfully weaves a tapestry that resonates with the core principles of the Sustainable Development Goals (SDGs). These strategic imperatives include the adept stewardship of resources, the cultivation of economic diversity, the seamless facilitation of trade, the fortification against corruption, and a harmonious symphony that underscores financial stability and the nurturing of human capital, ultimately painting a vivid portrait of sustainable economic growth.
L‐lysine Janus Dendrimer Conjugate with Naproxen and Mefenamic Acid and its Anticancer Activity
Authors: Castillo‐Rodríguez Irving Osiel , Saavedra‐González Ilse , Ramírez‐Ápan Teresa , Martínez‐García Marcos 
Published: January 2024

AbstractDendritic architectures have potential use as excellent carriers for drug delivery due to their multifunctionality, biopermeability, and biodegradability properties. Furthermore, their conjugation with non‐steroidal anti‐inflammatory drugs (NSAIDs) results in a synergetic effect improving their anticancer activity. Here we report the synthesis and cytotoxic activity of novel Janus dendrimer conjugates with naproxen and mefenamic acid moieties at the periphery. Diethanolamine dendrons were convergently synthesized through a protection‐deprotection sequence with naproxen as a terminal group and finally coupled to triethylene glycol as a linker. On the other hand, mefenamic acid was covalently joined to the L‐lysine. The dendron and dendrimer‐conjugates with naproxen and mefenamic acid showed high inhibition and selectivity against PC‐3 (human prostatic adenocarcinoma), and K‐562 (human chronic myelogenous leukemia) cell lines, but low cytotoxicity against normal cell lines. To explain the molecular mechanisms involved in the anticancer activity of dendrimer conjugates, our research will be continued.
PVP−I Catalyzed Oxidation of N‐substituted Benzylamines to Benzamides
Authors: Lu Guangying , Yuan Xinxin , Wang Jian , Sun Xue‐Qin , Cao Fu‐Rong , Ren Jiangmeng , Ke Yanxiong , Mu Xin , Zeng Bu‐Bing 
Published: January 2024

AbstractAn oxidative transformation from N‐substituted benzylamine into the corresponding benzamides was developed here using the oxidative system combined from the catalytic amount of PVP−I (polyinyl pyrrolidone) with TBHP. This newly developed method had the advantages of mild reaction conditions and broad substrate scope. The key intermediate of Enzalutamide as androgen receptor inhibitors was prepared using this catalytic condition starting from commercial available 2‐fluoro‐4‐nitrobenzaldehyde with the yield of 78.5 % for three‐step reactions.
An Unprecedented Reaction of BOPHY: Fluorimetric Chemosensing of Amines by Tetrabrominated BOPHY
Authors: Tunca Erol , Teknikel Efdal , Unaleroglu Canan 
Published: January 2024

AbstractIn this study, we present an unprecedented reaction of BOPHY. Although tetrabrominated BOPHY (BrBPH) is known to give a substitution reaction with amines, we found that this reaction proceeds through an addition mechanism in the dilute medium. Upon this reaction, the absorption and fluorescence bands of BrBPH decrease dramatically. We used this newly presented reaction for the fluorimetric detection and quantification of amines. BrBPH‐adsorbed TLC plates were also utilized for the determination of food spoilage.
Synthesis and Optical Properties of Anion‐Responsive X‐shaped π‐Electronic System
Authors: Morii Kazuki , Nabeta Hiroyuki , Yanbe Takahiro , Watanabe Kaho , Sumikoshi Shunsuke , Chiba Takayuki , Yamakado Ryohei , Okada Shuji 
Published: January 2024

AbstractThe properties of donor‐π‐acceptor molecules are strongly influenced by the electron density and configuration of both donor and acceptor moieties. In particular, X‐shaped molecules, where two linear π‐conjugation systems ended by donors and/or acceptors are crossed in their middle, are well‐known to separate frontier molecular orbitals, and the donor and acceptor strongly influence the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO), respectively. A novel X‐shaped molecule, containing a diphenylamino group as the donor and a dimesitylboryl group as the acceptor, was synthesized to modulate the optical properties via anion complex formation. The X‐shaped molecule formed [1+1]‐ and [1+2]‐type anion complexes in solution, and a negative cooperative effect for the formation of the [1+2]‐type anion complex was observed. UV‐vis and fluorescence spectroscopy reveled the changes in the optical properties by the formation of anion complexes, with the spectral changes upon anion addition were consistent with the theoretical spectra obtained from time‐dependent density functional theory calculations. Furthermore, the X‐shaped molecule, which exhibits remarkable luminescence properties even in the solid state, demonstrated electroluminescent behavior.
ZnSe/SnSe Heterostructure Incorporated with Selenium/Nitrogen Co‐Doped Carbon Nanofiber Skeleton for Sodium‐Ion Batteries
Authors: Zhang Yingmeng , Cheng Lele , Li Liheng , Lin Yihan , Li Shaojun , Li Yongliang , Ren Xiangzhong , Zhang Peixin , Sun Lingna 
Published: January 2024

AbstractEffective strategies toward building exquisite nanostructures with enhanced structural integrity and improved reaction kinetics will carry forward the practical application of alloy‐based materials as anodes in batteries. Herein, a free‐standing 3D carbon nanofiber (CNF) skeleton incorporated with heterostructured binary metal selenides (ZnSe/SnSe) nanoboxes is developed for Na‐ion storage anodes, which can facilitate Na+ ion migration, improve structure integrity, and enhance the electrochemical reaction kinetics. During the carbonization and selenization process, selenium/nitrogen (Se/N) is co‐doped into the 3D CNF skeleton, which can improve the conductivity and wettability of the CNF matrices. More importantly, the ZnSe/SnSe heterostructures and the Se/N co‐doping CNFs can have a synergistic interfacial coupling effect and built‐in electric field in the heterogeneous interfaces of ZnSe/SnSe hetero‐boundaries as well as the interfaces between the CNF matrix and the selenide heterostructures, which can enable fast ion/electron transport and accelerate surface/internal reaction kinetics for Na‐ion storage. The ZnSe/SnSe@Se,N‐CNFs exhibit superior Na‐ion storage performance than the comparative ZnSe/SnSe, ZnSe and SnSe powders, which deliver an excellent rate performance (882.0, 773.6, 695.7, 634.2, and 559.0 mAh g−1 at current rates of 0.1, 0.2, 0.5, 1, and 2 A g−1) and long‐life cycling stability of 587.5 mAh g−1 for 3500 cycles at 2 A g−1.
Proactive river corridor definition: Recommendations for a process‐based width optimization approach illustrated in the context of the coastal Pacific Northwest
Authors: Nelson Andrew D. , Collins Vaughn D. , Payne Jeremy S. , Abbe Tim B. 
Published: January 2024

AbstractWe propose a holistic approach to define a river corridor as the minimum space needed to sustain key river functions based on an understanding of the desired functions of that corridor and the processes governing channel and floodplain formation. Giving such space is a fundamental nature‐based solution to river management, as it allows the river to use its own energy to maintain flood conveyance and habitat function. The review of existing river corridor concepts shows that these often focus on one or two potential functions of a river corridor and may not be well suited as tools to optimize eco‐geomorphic river function. We argue that evaluating the effects of river corridor width on multiple processes can provide an objective means to optimize delineation in areas where development encroaches onto floodplains and channel migration zones. Key processes are linked to channel migration and include floodplain rejuvenation, emergence of a dynamic patch mosaic of riparian habitat that sustains a functioning large wood cycle, and effects of constriction and confinement on channel dynamics and morphology. Quantification of these processes for an example river shows the most rapid gains for habitat and flood protection values up to the threshold for planform‐controlled conditions and an asymptotically reducing rate of gain in function above that threshold. For the example river, the threshold width approaching that asymptote is substantially more than its constrained condition but much less than the width of the floodplain and channel migration zone, offering a compromise for managing rivers with developed floodplains.This article is categorized under:
Engineering Water > Sustainable Engineering of Water
Water and Life > Nature of Freshwater Ecosystems
Water and Life > Conservation, Management, and Awareness
Intra-Technique Combination of VLBI Intensives and Rapid Data to Improve the Temporal Regularity and Continuity of the UT1-UTC Series
Authors: Klemm Lisa , Thaller Daniela , Flohrer Claudia , Walenta Anastasiia , Ullrich Dieter , Hellmers Hendrik 
Published: January 2024

AbstractThe difference UT1-UTC is the most variable quantity among the Earth Orientation Parameters (EOP) with significant unpredictable variation. It can be measured only with the quasi-space-fixed technique VLBI. The IVS organizes two different VLBI observation campaigns: The bi-weekly 24-hour Rapid campaigns and the daily 1-hour Intensive sessions. As a result, two independent UT1-UTC time series are estimated and published as official IVS EOP-S and EOP-I products. These have different strengths and weaknesses in terms of continuity and accuracy, but both are characterized by irregular temporal resolution. We present the current activities of BKG towards a combined processing of VLBI Intensive and Rapid data in one common adjustment. In this way, we unify the strengths of both sessions and generate a UT1-UTC time series characterized by a daily, continuous and temporally regular resolution, e.g., at 12:00 UTC. We achieved a significant improvement in accuracy of 35% lower WRMS values compared to the regular session-wise Intensive-only solution. By using a continuous EOP parameterization, the accuracy is almost at a constant level and less dependent on the irregularity of the VLBI observation period. The processing is based on homogenized, datum-free NEQs which allow a rigorous combination on the normal equation level instead of the observation level. Based on the improved combination method, we intend to set up a new operational VLBI EOP product at BKG. Its characteristics make it suitable as an input for EOP prediction algorithms.
Digital Technology Use Cases for Deconstruction and Reverse Logistics
Authors: van den Berg Marc 
Published: January 2024

AbstractThe transition towards a circular built environment challenges dismantling firms to revisit their practices. These firms traditionally demolish buildings with crushing force, essentially creating poorly recyclable waste. This practice leads to a loss of economic value and has several negative social and environmental consequences. Deconstruction, defined as construction in reverse, represents an alternative practice in which as many materials are recovered as possible. Deconstruction is particularly challenging because responsible firms need to process more information to organise various reverse logistics options efficiently. This chapter, therefore, reviews reverse supply chain practices in construction and illustrates how digital technologies could support dismantling firms and their partners during essential deconstruction activities. Through evidence-based insights and examples from practice, the chapter presents a state-of-the-art overview of digital deconstruction technology use cases for identifying, harvesting, and distributing reusable building elements. It shows that digital technologies have been developed for separate deconstruction activities but are rarely used in an integrated manner. Further integration through aligning the digital technologies with practitioners’ information needs will, accordingly, unlock new opportunities for closed-loop material flows.
Circular Business Models for Digital Technologies in the Built Environment
Authors: Nussholz Julia , Assmann Ingvild Reine , Kelly Philip , Bocken Nancy 
Published: January 2024

AbstractBusiness model innovation enabled by novel digital technologies can accelerate the impact and upscaling of the circular economy in the built environment. Digital technologies not only enable highly impactful new business models but also enable innovation of existing business models. Considering the disruptive power of digital technologies, rethinking business models in the construction sector for the circular economy is vital to manage risks and capture opportunities. This chapter presents 12 real-life cases of emerging business models enabled by digital technologies that successfully narrow, slow, close, or regenerate resource loops in the construction sector. Cases are analysed regarding how they create, deliver, and capture value and how they enable circularity. Findings present different types of business models for digital technologies prevalent for narrowing, closing, slowing, and regenerating resource loops and that enabling capabilities for circularity, such as tracking, monitoring, control, optimisation, design evolution, and information exchange, are at the core of their value propositions. Industry practitioners can use findings to familiarise themselves with emerging business models and innovation opportunities.
Geographic Information Systems for Circular Cities and Regions
Authors: Tsui Tanya , Wuyts Wendy , Van den Berghe Karel 
Published: January 2024

AbstractA geographic information system (GIS) stores, manipulates, analyses, and visualises spatial data. GIS enables the mapping of building elements and components and can optimise the location of facilities for circular activities, thus contributing to the closing of material loops and the spatial development of circular cities and regions. This chapter presents use cases of GIS in the circular built environment, with examples from academia, industry, and government. Academics use GIS data for urban mining studies to estimate the location and availability of secondary construction materials. Businesses in industry use GIS analysis to inform the facility location of circular construction hubs and (reverse) logistics. Governments use GIS to monitor and assess the circular spatial development potential of their (industrial) territories. In order to integrate GIS into circular economy solutions, improvements need to be made in making spatial data available and in presenting findings that emerge from it. Finally, present enthusiasm for GIS tools should be balanced by a deeper understanding of the connection between digital tools and governance decisions.
Digitising Building Materials for Reuse with Reality Capture and Scan-to-BIM Technologies
Authors: Gordon Matthew , von Zimmerman Luise , Haradhun Oushesh , Campanella Dominik , Bräutigam Milena , De Wolf Catherine 
Published: January 2024

AbstractEffective building component reuse requires specific information about recoverable components. However, 85% of the European building stock predates the building information modelling (BIM) technology that stores and links such information. Digitisation technologies can be used to recover this information. Scanning and scan-to-BIM technologies such as LiDAR and photogrammetry enable us to capture and analyse large amounts of raw geometric data as point clouds to create digital records or BIM models of existing buildings. These digital representations can be used by building owners, inspectors, and deconstruction groups for deconstruction, new design, procurement, and new construction. They help implement closed circular resource strategies linking recovered materials to new projects. In this article, we look at a specific case study of these applications through the circularity consultant Concular. Digitisation technologies are compared based on their range and accuracy in conditions with noisy and cluttered data, as well as their cost and accessibility. Additional sensor technologies may integrate further compositional or structural details to ultimately produce insights beyond surface geometry that can be communicated through integrated digital platforms for data access and exchange. Further technological development will lower the time and labour costs during data collection, processing, and analysis.
The Influence of Celebrities and Religious Leaders in Addressing Rumours on Social Media
Authors: Chitsime Angela , Ndovi Vitima , Machewere Zithe , Mang’ando Alfred , Maziya Carolyne , Rodriguez Katie , Boyle Jennifer 
Published: January 2024

AbstractThe use of social media in health communication/promotion has been increasing over the past years due to its ability to engage and interact with audiences without the confines of physical boundaries. Social media is defined as activities, practices and behaviours among communities of users who gather online to share information, knowledge and opinions using conversational media. Social media has been the catalyst of misinformation, misconceptions and rumours around the COVID-19 pandemic, which have had a huge negative impact on adherence to preventive measures and uptake of COVID-19 vaccines. In Malawi, social media has been a source of vaccine-related rumours that include safety concerns, conspiracy theories and religious objections. The same social media platforms where rumours are propagating can be used not only to disseminate correct information but to do so through trusted influencers who already have a following. This chapter provides an overview of a social media campaign that engaged online influencers in Malawi to model and showcase desired behaviours on COVID-19 prevention, including vaccine uptake. The campaign helped online influencers spark conversations around COVID-19 vaccines with religious leaders and health experts, who were trusted by communities but did not have an online platform. Both social media influencers and community leaders listened to and responded to misinformation and questions presented by audiences through the influencer pages.