http://ijaers.com/ Open Access international Journal to publish research paper en-us July The sustainable reutilization of industrial solid waste offers a viable strategy to address environmental concerns associated with coal-fired power generation. This study investigates the role of Fe2O3 additives in enhancing the sintering behavior, microstructural evolution, and structural properties of high-strength ceramsite synthesized from circulating fluidized bed (CFB) fly ash. A series of ceramsite samples with varying Fe2O3 contents (0–15 wt%) were sintered at temperatures ranging from 1150°C to 1300°C to evaluate the influence of Fe2O3 on material performance. The results revealed that the addition of 5–10 wt% Fe2O3 at 1300°C produced optimal results. Microstructural analyses using X-ray diffraction (XRD), scanning electron microscopy (SEM), and thermogravimetric–differential scanning calorimetry coupled with Fourier-transform infrared spectroscopy (TG-DSC-FTIR) demonstrated that Fe2O3 effectively promotes liquid-phase sintering, facilitates mullite crystallization, and improves particle bonding and densification, while simultaneously moderating gas evolution. However, excessive Fe2O3 content (>10 wt%) led to reduced strength and densification due to increased porosity and decreased liquid-phase viscosity. This research not only highlights the dual function of Fe2O3 as both a fluxing and structural stabilizing agent but also provides a practical route for converting coal-based solid waste into high-performance construction materials. The findings contribute to the advancement of sustainable building technologies and support circular economy goals through efficient resource recovery and waste minimization. http://ijaers.com/detail/effect-of-fe2o3-additives-on-the-sintering-mechanism-of-a-high-strength-ceramsite-from-a-cfb-fly-ash/ Ikechukwu Okeke, Peng Liyang, Yuhong Qin, Chukwubuike Chiemerie Onwuagbu, Afreh Paul, Maywish Islam http://ijaers.com/uploads/issue_files/1IJAERS-06202515-Effect.pdf Climate change affects the development of agriculture in the Commune of Savalou. This research studies the impacts of climate change on farms in the Commune of Savalou. The methodological approach used consisted firstly of data collection, then their processing and finally the analysis of the results. The data processing was carried out using Khronostat, SPSS and ArcView software. The results show a climatic divergence in terms of monthly average rainfall totals. The decrease in rainfall intensity associated with the reduction in the number of rainy days is a factor in the decrease in rainfall amounts in the Commune of Savalou. Only the month of August recorded a 23% increase in monthly rainfall amounts during the 1980-2021 sub-series. In addition, non-compliance with social norms (40% of those interviewed), divine will (27%), deforestation (19%) and wildfires (14%) are the causes of climate change. These climate changes are characterized by the decline, late arrival and early end of rainfall, the rise in temperature and the high frequency of dry years. This recorded rainfall dynamic has consequences on farms. Climate change causes the reduction of sown areas ranging from 2 ha to 0.5 ha during the agricultural season. The loss of corn is 317.29 kg. Peanuts recorded a loss of less than 100 kg per farm and by the total sown area. http://ijaers.com/detail/impact-of-climate-change-on-farms-in-the-commune-of-savalou-benin-west-africa/ Guy Wokou http://ijaers.com/uploads/issue_files/2IJAERS-06202517-Impactof.pdf This scientific article aims to provide a comprehensive analysis of group psychology in the Brazilian context, exploring its definition, history, main theories, and group processes. The study emphasizes the contributions of Brazilian authors to the field and investigates the applications of group psychology, with a specific focus on field research conducted with high school adolescents in Porto Velho, Rondônia. The methodology involved a detailed review of national and international literature and data collection through interviews with 236 students. The results of the field research, presented and analyzed, offer valuable insights into the interests, future plans, worldview, sexuality, work, and responsibilities of the adolescents. The discussion integrates the findings of the field research with the theoretical concepts of group psychology, culminating in practical recommendations for teachers working with this population. http://ijaers.com/detail/group-psychology-in-brazil-an-analysis-with-a-focus-on-adolescents-from-porto-velho/ Leonardo Severo da Luz Neto, Luiz Carlos Albuquerque Cavalcanti, Amanda Volpi Luz, Geovana Paiva Paixão http://ijaers.com/uploads/issue_files/3IJAERS-0620254-Group.pdf This research presents the formulation of a governing equation for water wave propagation, developed based on the three-dimensional Laplace equation and its velocity potential solution derived through the method of separation of variables. The resulting governing equation takes the form of a parabolic differential equation. The formulation is conducted without imposing limitations on wave amplitude or seabed slope, enabling the model to accommodate maximum wave amplitudes for a given wave period and a wide range of bathymetric gradients. As such, the model is applicable to both short waves and long waves, including tsunamis and sneaker waves. The proposed model effectively simulates key wave transformation processes such as refraction-diffraction, shoaling, breaking, and run-up. Additionally, it is capable of modeling wave overtopping over breakwaters induced by short waves. http://ijaers.com/detail/water-wave-transformation-model-for-short-and-long-waves/ Syawaluddin Hutahaean http://ijaers.com/uploads/issue_files/4IJAERS-0720255-WateWave.pdf