In this study we examine variations in the structure of perovskite compounds of LaBa2Cu2O9, LaBa2CaCu3O12 and LaBa2Ca2Cu5O15 synthesized using the solid state reaction method. The samples’ compositions were assessed using X-ray fluorescence (XRF) analysis. The La: Ba: Ca: Cu ratios for samples LaBa2Cu2O9, LaBa2CaCu3O12 and LaBa2Ca2Cu5O15 were found by XRF analysis to be around 1:2:0:2, 1:2:1:3, and 1:2:2:5, respectively. The samples’ well-known structures were then analyzed using X-ray diffraction. The three samples largely consist of phases 1202, 1213, and 1225, with a trace quantity of an unknown secondary phase, based on the intensities and locations of the diffraction peaks. According to the measured parameters a, b, and c, every sample has a tetragonal symmetry structure. Each sample’s mass density was observed to alter as the lead oxide content rose. Scanning electron microscope (SEM) images of the three phases revealed that different Ca-O and Cu-O layers can cause different grain sizes, characterized by elongated thin grains, without a preferred orientation.

This study focuses on how the partial substitution of copper by nickel nanoparticles affects the electrical and structural properties of the Bi2Ba2Ca2Cu2.9Ni0.1O10+δ, Bi2Ba2Ca2Cu2.8Ni0.2O10+δ and Bi2Ba2Ca2Cu2.6Ni0.4O10+δ compounds. Approximate values of crystallization size and crystallization percentage for the three compounds were calculated using the Scherer, modified Scherer, and Williamson-Hall methods. A great similarity was observed in the crystal size values from the Scherer method, 243.442 nm, and the Williamson-Hall method, 243.794 nm for the second sample. At the same time this sample exhibited the highest crystal size value for the three methods. In the examination of electrical properties, the sample with 0.1 partial substitution, Bi2Ba2Ca2Cu2.9Ni0.1O10+δ was determined to be the best with a critical temperature of 100 K and an energy gap of 6.57639 × 10-21 MeV. Using the SEM technique to analyze the structural morphology of the three phases, it was discovered that the size of the granular forms exceeds 25 nm. It was determined that the samples’ shapes alter when nickel concentration rises. The patterns that reveal the distribution of the crystal structure also exhibit clear homogeneity.

The emergence of Mo2C- based catalysts in recent years has been favored as promising contender within diverse class MXenes. In terms of rapid development in the photocatalytic application, these intriguing compounds exhibit excellent photocatalytic performance because of their superior optical properties and peculiar structure characteristics. Unfortunately, a systematic review of Mo2C- based catalysts is lacking. In this review, we abstract the implication of structure—property relationship of emerging Mo2C- based MXenes materials and their applications toward the photocatalytic hydrogen evolution reaction (HER). Furthermore, synthetic pathways to prepare high-quality, low cost Mo2C- based MXenes materials and their outcomes for high HER applications are systematically described. Finally, several insights are provided into the prospects and future challenges for the development of highly reactive Mo2C- based MXenes materials, which present large range opportunities in this promising 2D materials for green and clean energy in environmental fields. This review provides a comprehensive scientific guide to the preparation, modification, and photocatalytic HER of MXenes-based materials.

Decabromodiphenyl ether (BDE209) is a persistent aromatic compound widely associated with environmental pollutants. Given its persistence and possible bioaccumulation, exploring a feasible technique to eradicate BDE209 efficiently is critical for today’s environmentally sustainable societies. Herein, an advanced nanocomposite is elaborately constructed, in which a large number of titanium dioxide ( TiO2) nanoparticles are anchored uniformly on two-dimensional graphene oxide (GO) nanosheets ( TiO2/GO) via a modified Hummer’s method and subsequent solvothermal treatment to achieve efficient photocatalytic degradation BDE209. The obtained TiO2/ GO photocatalyst has excellent photocatalytic due to the intense coupling between conductive GO nanosheets and TiO2 nanoparticles. Under the optimal photocatalytic degradation test conditions, the degradation efficiency of BDE209 is more than 90%. In addition, this study also provides an efficient route for designing highly active catalytic materials.

Reliable, inexpensive, environment-friendly, and durable properties of carbon materials with unique and outstanding photoelectric performance is highly desired for myriad of applications such as catalysis and energy storage. Since lattice modulation is a vital method of surface modification of materials, which form by an external force during the synthesis process, causing the internal compression and stretching, leading to lattice sliding event. In this review, we present a summary of different methods to tailor the lattice modulation in 2D carbon-based materials, including grain/twin boundary, lattice strain, lattice distortion, and lattice defects. This overview highlights the implication control of the diverse morphologies of nanocrystals and how to tailor the materials properties without adding any polymers. The improvement in the performance of 2D carbon materials ranges from the enhancement of charge transport and conductivity, structural stability, high-performance of light absorption capacity, and efficient selectivity promote the future prospect of 2D carbon materials broaden their applications in terms of energy conversion and storage. Finally, some perspectives are proposed on the future developments and challenges on 2D carbon materials towards energy storage applications.

In today's fast-evolving technological environment, the growth of mobile devices has provided businesses with additional knowledge on how to effectively communicate with their targeted audience. As big data generated by mobile users has become a valuable source for improving communication, users’ location data has provided an additional parameter to take into account while trying to enhance the effectiveness of digital marketing campaigns. This paper presents a comparative study of the location-based marketing field and tools. It provides an overview of different exploitation methods of location-based mobile services and data for effective digital marketing campaigns and guidelines for future research.

The war in Ukraine found numerous global brands publicly taking stances on the issue. They turned to their social media channels to disclose their initiatives, which ranged from simple statements through to actions of greater substantiality such as donations and divestments and triggered a lively conversation and opposing consumer reactions. The phenomenon of brands advocating for crucial but polarising socio-political matters is known as brand activism and is a concept still under-conceptualised. Our study extends the knowledge of brand activism in two ways. First, we address literature calls for investigating the ways through which the marketplace endorses peace by exploring how brand activism serves as a peace marketing tool. We, therefore, term brands’ stance-taking promoting peace or in relation to war as “peace brand activism” and embark on fully unpacking it as a concept. Second, extending the understanding of the concept of brand activism that stands as mostly unidimensional, we proceed in developing a comprehensive conceptualisation of peace brand activism that tracks the range of forms it can take and accounts for its different types and characteristics. Our work employs an exploratory qualitative analysis to unravel how global brands become peace activists, as disclosed in their social media channels across different platforms. Our data captures the activities of a sample of global brands across social media channels. Our findings reveal the range of brand activism forms that can be employed by brands. We also unearth the types of peace brand activism approaches that can be adopted when disclosing peace brand activism initiatives on social media channels. Our work contributes to theory by providing a holistic understanding of the concept of brand activism for peace and explicates important implications for managers and policy makers alike.

Crowdfunding – obtaining funding from a large pool of investors, where each one provides a relatively small amount of money, usually through the Internet – has become an innovative alternative channel for project funding. Historically, culture sector has stood at the forefront of adopting crowdfunding, with ArtistShare active from 2003 as a funding platform for music projects. Despite this, there is still lack of research dedicated to the role and impact of crowdfunding in the culture sector.

Mental distress has been consistently reported to be highly prevalent after collective traumas, alongside physical and personal damages. When left untreated, these will worsen survivors’ ability to function. Research also points to unmet needs, related to job security and a sense of belonging. Our study aims to identify a clustered-dimensional approach to people’s experiences after a massive urban violence apart from traditional categorical psychopathological assessments. This cross-sectional internet-based study included 1305 Lebanese adults, 4 months after the apocalyptic Beirut Port explosion. Emotions, attitudes and needs were assessed using iCode software, measuring explicit answers and implicit reaction time. First and foremost, explicit responses revealed alarming levels of distress (75-80%). Latent class analysis further differentiated three groups on seven different dimensions derived from principal component analysis. People who experienced the most intense emotional distress and intrusive thoughts had higher country dissatisfaction and job worries. Faith and community resilience buffered the negative emotionality of those affected in spite of avoidance and intrusion. The last group was less distressed by the trauma with a marked sense of community and an overall reduced country and job dissatisfactions. These findings suggest that integrating implicit responses helps cluster people’s experiences after a collective trauma above and beyond single demographic criteria as vulnerability to mass violence is quite variable within seemingly homogenous samples. They also provide insight onto hard-wired attitudes and needs post-trauma. It mostly taps into multi-factorial individual vulnerabilities and protective factors to better refine targeted interventions for at-risk subpopulation outreach and foster resilience in unstable environments.

Green consumption behavior (GCB) is desirable for a better world. The trend of GCB is expected to rise in the coming years. As such, it is imperative to understand the enablers of GCB. A significant majority of the investigated drivers of GCB are consumer-level factors. Studies focusing on the consumer-level showed that factors such as values, intentions, and personal norms could influence GCB. However, it is argued that compared to values or intentions, self-determined motivation can better predict GCB. The effect of self-determined motivation types (i.e., autonomous and controlled motivation) on GCB remains unclear due to prevailing gaps and contradictory findings. Furthermore, it is posited that people exhibit more self-determined behavior if they have strong self-awareness. Higher self-awareness can be achieved through mindfulness; therefore, differences in mindfulness level could affect the motivation-behavior relationship.

The application of mindfulness is increasing significantly in different areas of business studies. However, identifying how mindfulness research has evolved and the major research themes, specifically within the business studies domain, remains lacking. This study unveils the intellectual structure of mindfulness research in business studies. Using citation and co-citation analysis, the study identifies the most influential articles, annual growth, and three key research clusters constituting the intellectual foundation.

Gastro-tourism extends beyond what to eat, but also the attractiveness and the environment. It encompasses a tourist experience journey starting from pre, during, until post-travel. Gastro tourism in the new normal engages with traditional vs novel value of experiences. This study aims to answer how Gen Z experiences gastro tourism and the impact of digital technologies using surveys on Tiktok Ads followed by an experiment with an immersive culinary adventure using 3D visual technology.

At a time when research on service failure and recovery is at a crossroads in terms of growth and relevance (Grégoire and Mattila 2021), this research studies an original context - the French manga market - in which the service providers behind the failure successfully decide not to be the recovery actors.