Application and prospect of blockchain in Metaverse by Xiaoling SONG, Yong LIU, Jingnan DONG, Yongfei HUANG

“…The metaverse is a new ecology that seamlessly integrates the virtual digital world and the real physical world, and has recently attracted widespread attention from all walks of life.With the maturity of various new IT technologies such as blockchain technology, artificial intelligence technology, VR/AR and sensing technology, mobile communication technology and ubiquitous computing technology, the further development of the Metaverse is possible.At present, research on the Metaverse mainly involves industrial projects, infrastructure, key technologies, privacy and security, etc.Although blockchain technology is covered in these studies, the specific points about the advantages of blockchain applied to the Metaverse are still lacked.Blockchain technology can not only provide an open and free decentralized environment for the Metaverse, but also act as a fair and reasonable digital asset distribution mechanism.The digital identity and digital asset management in the Metaverse empowered by blockchain was studied.The development process and characteristics of the Metaverse were analyzed.And the core technologies and challenges faced by the development of the Metaverse were discussed.Meanwhile, the key technologies of the blockchain were studied, and the feasibility of applying the blockchain to the Metaverse was analyzed from two aspects: the essential characteristics of the blockchain and the advantages of other technology integration.The Metaverse ecosystem architecture was further proposed, and the blockchain-based self-sovereign identity management model, blockchain-NFT workflow and its application in the Metaverse were analyzed in detail.Furthermore, combining the latest research progress of blockchain and the Metaverse, it was pointed out that the application of blockchain to the Metaverse will be from four aspects: infrastructure, communication and computing resource management mechanisms, regulation and privacy protection, and blockchain scalability and interoperability.Then the related challenges ahead and future research directions were presented at last.…”
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<i>Mycobacterium abscessus—</i>An Emerging True Pathogen: A Case Report by Shruti Appaswamy, Bhavesh D Rathod

“…NTM are diverse and ubiquitous in the environment, with only a few species causing serious and often opportunistic infections in humans, including <i>Mycobacterium abscessus</i>. …”
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Drug Disposal and Ecopharmacovigilance Practices in the Krowor Municipality, Ghana by Yvonne Yirenkyiwaa Esseku, Priscilla Kolibea Mante, Alex Nii Oto Dodoo, Eric Woode

“…The use of medicines is a ubiquitous practice for the management of healthcare conditions. …”
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Whole genome sequence of Streptomyces colonosanans strain MUSC 93JT isolated from mangrove forest in Malaysia by Hooi-Leng Ser, Jodi Woan-Fei Law, Wen-Si Tan, Wai-Fong Yin, Kok-Gan Chan

“…Under the family Actinobacteria, streptomycetes are ubiquitous in nature, producing a wide spectrum of bioactive compounds including antibacterial, antioxidant, anticancer and immunomodulatory properties. …”
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Disruptive technologies that deliver a circular economy for plastics by Katherine E.S. Locock, Andrew Terhorst, Sarah King, Kymberley R. Scroggie

“…Plastics are ubiquitous and integral to modern life with global production doubling in the next 20 years. …”
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(SPT-)LSM theorems from projective non-invertible symmetries by Salvatore D. Pace, Ho Tat Lam, and Ömer M. Aksoy

“…Projective symmetries are ubiquitous in quantum lattice models and can be leveraged to constrain their phase diagram and entanglement structure. …”
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Parametric design and manufacturing of stress-oriented lightweight cellular structure with implicit neural representation by Canhui Lin, Ke Xu, Yingguang Li, Xu Liu, Chenli Zhou

“…Lightweight structures are ubiquitous in nature and extensively applied in high-end industries for load-bearing purpose. …”
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Expression of protein phosphatase 4 in different tissues under hypoxia by Yanyan Ma, Jing Hou, Dengliang Huang, Yaogang Zhang, Zhe Liu, Meiyuan Tian

“…These results suggest that the PP4 phosphatase complex is ubiquitously expressed in rat tissues and likely involved in adaptation to or disease associated with high-altitude hypoxia.…”
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Technical frames used for the online reporting of lesbian killings in South Africa by Marchant van der Schyff

“…South Africa remains one of the most dangerous places for women – lesbians in particular – to live freely and safely, where a culture of patriarchy and a lack of socio-economic opportunity are ubiquitous throughout its communities. While the Internet has given journalists a wider platform to provide insights about issues plaguing lesbians, there is very little information regarding the elements used in these online reports. …”
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Trends and Progress on Antibiotic-Resistant Mycobacterium tuberculosis and Genes in relation to Human Immunodeficiency Virus by N. G. Mbewana Ntshanka, T. A. M. Msagati

“…The propagation of antimicrobial resistance (AMR) is even more amplified in areas where the pressure of antimicrobial resistant pathogens is elevated, and hence the population with ubiquitous HIV and AIDS is considered the hotspot. This review therefore aims to give in-depth coverage on the trends and the progress on the development of TB and HIV-resistant strains, highlight strategies to solve the problem, and accentuate the repercussions of the COVID-19 epidemic on the AMR.…”
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Unravelling single-cell DNA replication timing dynamics using machine learning reveals heterogeneity in cancer progression by Joseph M. Josephides, Chun-Long Chen

“…Our methodology brings critical insights into chromosomal aberrations and highlights the ubiquitous aneuploidy process during tumorigenesis. …”
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Detecting a New Type of Stokes V Profiles Observed by Hinode in a Sunspot by Hashem Hamedivafa

“…Pixels whose Stokes V profiles show humps on, at least, either blue or red lobe are ubiquitous: 42.1\% show both humps; 36.8\% (3.7\%) show only blue (red) hump. …”
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Rural vs. Urban: How Urbanicity Shapes Electric Vehicle Charging Behavior in Rhode Island by Tim Jonas, Oluwatosin Okele, Gretchen A. Macht

“…A ubiquitous network of charging stations is vital to facilitate the adoption of electric vehicles (EVs) and the achievement of a low-carbon transportation system. …”
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Immune Responses to Tissue-Restricted Nonmajor Histocompatibility Complex Antigens in Allograft Rejection by Ankit Bharat, T. Mohanakumar

“…The thymus gland deletes self-reactive T-cells against ubiquitously expressed SAgs, while regulatory mechanisms in the periphery control immune responses to tissue-restricted SAgs. …”
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Gaps Manifesting in African Social Work: Eclectic Contexts in Africa by Simon Murote Kang’ethe

“…Although the discipline of social work is pivotal in rejuvenating socio-economic welfare in ubiquitous corners of the world, it has paradoxically scored poorly in managing and leveraging welfare-based interventions in many African countries. …”
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Nanoreinforcements of Two-Dimensional Nanomaterials for Flame Retardant Polymeric Composites: An Overview by Shaolin Lu, Wei Hong, Xudong Chen

“…Polymer materials are ubiquitous in daily life. While polymers are often convenient and helpful, their properties often obscure the fire hazards they may pose. …”
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Effect of nano- and micro-polystyrene particles on small intestinal epithelial functions and enteric neuronal activity in vitro by Kristin Elfers, Pascal Benz, Marion Burmester, Silja Hein, Kathrin Hansen, Holger Sieg, Linda Böhmert, Maxi B. Paul, Gemma Mazzuoli-Weber

“…Abstract Based on their ubiquitous distribution in various ecosystems, plastic particles of different origin and sizes enter the (human) food chain, are ingested and reach the gastrointestinal tract, where they interact with the intestinal (epithelial) tissue. …”
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Cyclic Evolution of Synergized Spin and Orbital Angular Momenta by Lei Liu, Xiao‐Chen Sun, Yuan Tian, Xiujuan Zhang, Ming‐Hui Lu, Yan‐Feng Chen

“…Polarization is a feature of vector fields while spatial phase gradient determines the OAM ubiquitous to any scalar field. Common wisdom treats these two degrees of freedom as independent principles to manipulate wave propagations. …”
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Q Fever: Current State of Knowledge and Perspectives of Research of a Neglected Zoonosis by Sarah Rebecca Porter, Guy Czaplicki, Jacques Mainil, Raphaël Guattéo, Claude Saegerman

“…Q fever is an ubiquitous zoonosis caused by an resistant intracellular bacterium, Coxiella burnetii. …”
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QTFN: A General End-to-End Time-Frequency Network to Reveal the Time-Varying Signatures of the Time Series by Tao Chen, Yang Jiao, Lei Xie, Hongye Su

“…Nonstationary time series are ubiquitous in almost all natural and engineering systems. …”
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