Addressing fake news requires a multidisciplinary effort The rise of fake news highlights the erosion of long-standing institutional bulwarks against misinformation in the internet age. Concern over the problem is global. However, much remains unknown regarding the vulnerabilities of individuals, institutions, and society to manipulations by malicious actors. A new system of safeguards is needed. Below, we discuss extant social and computer science research regarding belief in fake news and the mechanisms by which it spreads. Fake news has a long history, but we focus on unanswered scientific questions raised by the proliferation of its most recent, politically oriented incarnation. Beyond selected references in the text, suggested further reading can be found in the supplementary materials.
Part I Radiation Damage -- 1 The Radiation Damage Event -- 2 The Displacement of Atoms -- 3 The Damage Cascade -- 4 Point Defect Formation and Diffusion -- 5 Radiation-Enhanced and Diffusion Defect Reaction Rate Theory -- Part II Physical Effects of Radiation Damage -- 6 Radiation-Induced Segregation -- 7 Dislocation Microstructure -- 8 Irradiation-Induced Voids and Bubbles -- 9 Phase Stability Under Irradiation -- 10 Unique Effects of Ion Irradiation -- 11 Simulation of Neutron Irradiation Effects with Ions -- Part III Mechanical Effects of Radiation Damage -- 12 Irradiation Hardening and Deformation -- 13 Irradiation Creep and Growth -- 14 Fracture and Embrittlement -- 15 Corrosion and Stress Corrosion Cracking Fundamentals -- 16 Effects of Irradiation on Corrosion and Environmentally Assisted Cracking -- Index. .
With the growing demand for large-scale infrastructure development in China—such as deep-sea, deep-underground, and urban subsurface projects—combined with the widespread use of general-purpose raw materials, there is an urgent need for more precise crack control technologies in concrete. This need stems from the imperative to reduce unnecessary material consumption and environmental impact caused by excessive safety margins. To address this, a set of governing equations that account for the mutual feedback between temperature and humidity was first proposed. A non-constant form of the diffusion coefficient was introduced, alongside latent heat terms and unsteady-state heat source terms, to establish a hygrothermal coupling model. This model was further enhanced by incorporating the effects of creep relaxation, reinforcement constraint, structural restraint, and thermal conduction characteristics of formwork, thereby forming a comprehensive multi-field coupling evaluation framework that encompasses the temperature field, moisture content field, strain field, and cracking index field. Subsequently, the proposed theoretical framework was applied to representative engineering scenarios, including large-scale concrete foundation slabs, bridge bearing platforms, large-area long-span side walls and prefabricated tunnel segments. The accuracy and reliability of the model were validated through comparisons between simulation results and field-monitored data. The results demonstrate that this method effectively overcomes the technical limitations of traditional concrete crack prediction models, particularly those relying on constant parameter assumptions and decoupled field interactions. It offers a practical and robust approach for engineering applications, providing a novel perspective for precision crack control in concrete and contributing to the broader goals of sustainability and resource efficiency.
Materials of engineering and construction. Mechanics of materials
This lecture presents an overview of the basic concepts and fundamentals of Engineering Materials within the framework of accelerator applications. After a short introduction, main concepts relative to the structure of matter are reviewed, like crystalline structures, defects and dislocations, phase diagrams and transformations. The microscopic description is correlated with physical properties of materials, focusing in metallurgical aspects like deformation and strengthening. Main groups of materials are addressed and described, namely, metals and alloys, ceramics, polymers, composite materials, and advanced materials, where brush-strokes of tangible applications in particle accelerators and detectors are given. Deterioration aspects of materials are also presented, like corrosion in metals and degradation in plastics.
Peter M. Piechulla, Mingliang Chen, Aristeidis Goulas
et al.
Atomic layer deposition (ALD) is widely studied for numerous applications and is commercially employed in the semiconductor industry, where planar substrates are the norm. However, the inherent ALD feature of coating virtually any surface geometry with atomistic thickness control is equally attractive for coating particulate materials (supports). In this review, we provide a comprehensive overview of the developments in this decades-old field of ALD on particulate materials, drawing on a bottom-up and quantitative analysis of 799 articles from this field. The obtained dataset is the basis for abstractions regarding reactor types (specifically for particles), coating materials, reactants, supports and processing conditions. Furthermore, the dataset enables direct access to specific processing conditions (for a given material, surface functionality, application etc.) and increases accessibility of the respective literature. We also review fundamental concepts of ALD on particles, and discuss the most common applications, i.e., catalysis (thermo-, electro-, photo-), batteries, luminescent phosphors and healthcare. Finally, we identify historical trends, and provide an outlook on prospective developments.
Freestanding thin films, a class of low-dimensional materials capable of maintaining structural integrity without substrates, have emerged as a forefront research focus. Their unique advantages-circumventing substrate clamping, liberating intrinsic material properties, and enabling cross-platform heterogeneous integration-underpin this prominence. This review systematically summarizes core fabrication techniques, including physical delamination (e.g., laser lift-off, mechanical exfoliation) and chemical etching, alongside associated transfer strategies. It further explores the induced strain modulation mechanisms, extreme mechanical properties and interface decoupling effects enabled by these films. Representative case studies demonstrate breakthrough applications in flexible/ultrathin electronics, ultrahigh-sensitivity sensors and the exploration of novel quantum states. Critical challenges regarding scalable fabrication, precise interface control, and long-term stability are analyzed, concluding with prospects for emerging applications in bio-inspired intelligent devices, quantum precision sensing, and brain-inspired neural networks.
IntroductionBibliometric analysis is widely acknowledged as a robust and systematic approach for examining extensive scholarly literature. It serves as a vital tool for mapping the landscape of contemporary research across various academic fields. The increase in bibliometric studies over the past decade highlights their growing importance in evaluating the evolution and impact of scientific inquiry. Among these methods, co-word analysis emerges as a powerful technique for uncovering conceptual connections between ideas and themes within a discipline. By analyzing term co-occurrences, this approach revealed underlying thematic clusters, prevailing trends, and evolving patterns over time, providing a dynamic perspective for interpreting the intellectual structure of a research domain. Materials & MethodsThis study utilized bibliometric analysis to examine scholarly literature. Data were processed using VOSviewer, UCINet, and BibExcel software. The data were extracted from the Islamic World Science Citation Center (ISC) database using the keywords “globalization” or “globalisation”. Plain text files obtained from the ISC database were imported into BibExcel. Employing natural language processing techniques within this software, key terms (nouns or noun phrases) were extracted. A frequency threshold of 4 was established, meaning a term had to appear at least 4 times in the sample to be included in the bibliometric map. This threshold is recommended to effectively eliminate irrelevant terms. Following several processing steps, a symmetric matrix was created and converted into a correlation matrix. This matrix was then imported into VOSviewer, which assessed the strength of relationships between the remaining terms that met the threshold. The extracted data spanned 25 years (1999–2023) and included 1,281 documents containing 4,502 author keywords. After standardization, 2,169 unique keywords remained. By applying the threshold, a 162×162 matrix was generated with diagonal cell values set to zero. Cluster analysis was conducted using the K-means method in VOSviewer. Discussion of Results & ConclusionThe terms “globalization”, “Iran”, and “cultural globalization” ranked first to third with frequencies of 703, 54, and 45, respectively. The keyword “globalization” with 703 occurrences emerged as the central concept within the research domain.Cluster analysis in VOSviewer identified 11 clusters related to globalization concepts:Globalization and economyGeopolitics of globalizationGlocalizationGlobalization and anti-globalizationGlobalization and transnationalizationCultural globalizationGlobalization of educationGlobalization and national securityGlobalization and identityGlobalization and geocultureGlobalization and urban environmentUsing UCINet, centrality and density scores were calculated for each cluster, resulting in a strategic diagram. The origin of the diagram was set at the mean centrality (7.14) and density (0.541). Notably, Cluster 7 (globalization of education) exhibited the highest centrality (18.857) and density (1.451), indicating strong internal and external conceptual linkages. First Quadrant (High Density/Centrality): Clusters 6 (cultural globalization) and 7 (globalization of education) represented core themes characterized by high cohesion and centrality, demonstrating extensive interconnections with other aspects of globalization. Second Quadrant (High Density, Lower Centrality): Clusters 9 (globalization and identity) and 10 (globalization and geoculture) were specialized subfields that exhibited cohesion but had limited influence on broader research trends. Third Quadrant (Low Density/Centrality): Clusters 2 (geopolitics), 3 (glocalization), 4 (anti-globalization), 5 (transnationalization), 8 (national security), and 11 (urban environment) consisted of emerging or declining topics with underdeveloped connections. Fourth Quadrant (Low Density, High Potential): Cluster 1 (globalization and economy) showed low centrality but high potential for future growth, reflecting globalization impact on national and international economies through concepts like economic growth and the KOF Globalization Index.This study underscored globalization as an interdisciplinary topic that spans foundational concepts and specialized applications. Researchers are encouraged to investigate the emerging areas identified in the third quadrant: geopolitics of globalization, glocalization, anti-globalization, transnationalization, national security, and urban environment. Although currently underdeveloped, these themes hold significant potential for shaping future scholarly discourse.
The single-function agents with wide-spectrum activity which tend to disturb the ecological balance of oral cavity cannot satisfy dental treatment need. A multi-functional agent with specifically targeted killing property and in situ remineralization is warranted for caries management. A novel multi-functional agent (8DSS-C8-P-113) consisting of three domains, i.e., a non-specific antimicrobial peptide (AMP) (P-113), a competence stimulating peptide (C8), and an enhancing remineralization domain (8DSS), is fabricated and evaluated in this study. The findings demonstrates that 2 μM mL−1 of 8DSS-C8-P-113 eliminates planktonic Streptococcus mutans (S. mutans) without disrupting the oral normal flora. At a concentration of 8 μM mL−1, it exhibits the ability to prevent S. mutans' adhesion. Furthermore, 8DSS-C8-P-113 self-assembles a hydrogel state at the higher concentration of 16 μM mL−1. This hydrogel self-adheres on the tooth surface, resisting acid attack, eradicating S. mutans’ biofilm, and inducing mineralization in order to facilitate the repair of demineralized dental hard tissue. Its significant effectiveness in reducing the severity of dental caries is also demonstrated in vivo in a rat model. This study suggests that the multi-functional bioactive AMP 8DSS-C8-P-113 is a promising agent to specifically target pathogen, prevent tooth demineralization, and effectively induce in situ bio-mimic remineralization for the management of dental caries.
Materials of engineering and construction. Mechanics of materials, Biology (General)