Water popularly termed the ‘The Elixir of Life’ is now polluted beyond control in several regions. Microplastics, the tiny contaminants have found their way into all walks of life. They have also been found to be present in human blood, multiple organs, and even breast milk. There is an abundance of microplastics in the air we breathe, the food we eat, and the water we drink. Curbing them has to start with a ban of all forms of primary microplastics, and single use plastics with preference being given to biodegradable alternatives. India in particular banned single use plastics in 2022, which put an end to several commonly used plastic items being replaced with biodegradables. Paint is one of the largest contributors to microplastics, followed by textile industry, cosmetic, pharmaceutical industry, packaging industry are all top contributors to microplastics. The wastewater treatment plants aren't designed to filter microplastics from the source and this results in microplastics polluting all water resources. Though several novel techniques for microplastic segregation exist such as sieving, filtration, density separation, visual sorting, alkali digestion exist, they aren't fully employed as the initial process of microplastic segregation from waste is still in question. ©

While groundwater is commonly perceived as safe, the excessive presence of trace metals, particularly arsenic (As), can pose significant health hazards. This review examines the current scenario of pollutants and their mitigations focusing on As contamination in groundwater across multiple nations, with a specific emphasis on the Indian Peninsula. Arsenic pollution surpasses the WHO limit of 10 ppb in 107 countries, impacting around 230 million people worldwide, with a substantial portion in Asia, including 20 states and four union territories in India. Analysis of the correlation between the aquifer and arsenic poisoning highlights severe contamination in groundwater originating from loose sedimentary aquifer strata, particularly in recently formed mountain ranges with geological sources presumed to contribute over 90% of arsenic pollution, i.e. a big environmental challenge. A myriad of techniques, including chromatographic, electrochemical, biological, spectroscopic, and colorimetric methods among others, are available for the detection and removal of arsenic from groundwater. Removal strategies encompass a wide array of approaches such as bioremediation, adsorption, coagulation/flocculation, ion exchange, biological processes, membrane treatment, and oxidation techniques specifically tailored for affected areas. Constructed wetlands help to eliminate heavy metal impurities such as As, Zn, Cd, Cu, Ni, Fe, and Cr. Their efficiency is influenced by design and environmental factors. Nanotechnology and nanoparticles have recently been studied to remove arsenic and toxic metal ions from water. Cost-effective solutions including community-based mitigation initiatives, alongside policy and regulatory frameworks addressing arsenic contamination, are essential considerations.

A novel foldable model is used for extending the constitutive relations of a cylindrical pressure vessel composed of the copper matrix cylinders reinforced with three-dimensional nanofillers named as graphene origami. Deformability is accounted based on the shear deformable kinematic model using the first order shear deformation theory. The overall material characteristics are evaluated using the Halpin–Tsai micromechanical models and rule of mixture. The governing equations are derived using the virtual work principle. Nanofiller characteristics dependent results are obtained using the analytical method. The results show an enhancement in the deformation and stress components with an enhancement in the foldability parameter and thermal loads as well as decrease in volume fraction.

Small-scale tubular structures have garnered considerable interest owing to their exceptional mechanical qualities, making them suitable for applications requiring lightweight and durable designs. This work examines the stability and buckling behavior of these structures via an integrated approach that merges beam theory with modified couple stress theory, yielding a more accurate comprehension of micro and nanoscale phenomena. The findings are particularly relevant to the sports industry, where advances in equipment and practices may considerably impact player performance and safety. This study looks at how these structures may improve the design of high-performance sports equipment, such as lightweight yet stable bicycle frames, ski poles, and gymnastic vaulting poles, by increasing their strength-to-weight ratio for better performance. The study emphasizes the potential applications in protective equipment and wearable technologies, where maintaining structural integrity is essential for ensuring longevity while preserving mobility. The comprehension of mechanical stability has progressed, leading to the development of a method for integrating advanced structural mechanics into sports engineering, thereby facilitating innovations that improve athletic performance and safety.

The rapid industrialization of the world has resulted in severe environmental pollution, necessitating the development of new materials such as pollution remediation. Two-dimensional (2D) MXenes have emerged as a promising family of materials due to their unique physicochemical properties, making them ideal for environmental remediation. The article sheds light on the new opportunities of MXenes in the removal of organic and inorganic contaminants, including organic dyes, pharmaceuticals, heavy metals, radionuclides, and gas pollutants. MXenes also show excellent performance in photocatalytic degradation, adsorption, and microbial inactivation with environmental safety. Moreover, their application in recovering valuable elements from waste streams is also being explored. While these advances are promising, challenges remain in surface chemistry, semiconducting behavior, interfacial effects, and large-scale synthesis. This review highlights the tremendous potential of MXenes in environmental remediation while also outlining the key challenges that need to be resolved to fully realize MXenes capabilities. By providing this comprehensive survey of MXene-based technologies, the paper stimulates further research and innovation in this rapidly evolving field.

Waterfront revitalization would be an effective strategy to preserve heritages, conserve the contaminated or abandoned site and inspire the identity and authenticity. However, there is no decision support tool to quantify and evaluate the sustainability accreditation of waterfronts in tourism attraction. This research aimed to identify the most potential waterfront typology in tourism attraction and develop the waterfront sustainable revitalization (SWR) index assessment model. The SWR index can assist policy makers and urban developers to analyze the heritage waterfronts using Analytical Hierarchy Process (AHP) method. The research found out the historic waterfront has the highest potential in tourism attraction among other typologies. And, pollution moderator is mostly important sub-criterion in tourism absorption (WC2.2 = 0.1294); followed by Identity (WC1.2 = 0.1272) and Safety and well-being (WC1.3 = 0.1043). The SWR index can be applied in any waterfronts in heritage cities around the world, while this research implemented it as a case study in Bandar Maharani, Muar, Malaysia. It resulted Bandar Maharani was ranked as grade C; means, usable waterfront to which extent environmental, social and physical revitalization are needed. The SWR index can be coupled with other decision-making methods in future, to reduce its inconsistencies and increasing accuracy.

Abstract Structural control under the serviceability limit state is a requirement of design codes to ensure the durability of structural elements. As it is possible to consider fibers to be reinforcement in concrete, UHPFRC can be used to guarantee properly distributing cracks and limiting crack width in the serviceability limit state. This research presents an experimental testing method for direct tensile tests on UHPFRC specimens. The results obtained from the proposed method, such as the specimen’s average tensile stress-strain curve, tensile stress in concrete, number and width of cracks, can be used to consider the behavior and design requirements of UHPFRC under serviceability conditions.

This study introduces FeZr-MOF/Graphene Oxide (GO) composite membranes as an innovative application of inorganic membrane technology for advanced separation and purification. These membranes were engineered to efficiently remove industrial dyes such as Congo red and methylene blue from aqueous solutions by leveraging the high surface area, chemical stability, and selective adsorption capabilities of FeZr-Metal-Organic Framework (FeZr-MOF). Based on laboratory evaluations, the composite membranes exhibited strong adsorption performance, achieving 87.5 mg/g capacities for Congo red and 80.2 mg/g for methylene blue. Integrating GO into the membrane matrix enhanced hydrophilicity, water permeability, and anti-fouling behavior, as evidenced by over 90 % permeability recovery after multiple cleaning cycles. This research reflects the latest advancements in inorganic membrane technology and bridge material innovation with industrial water purification needs. Machine Learning (ML), implemented via the Random Forest (RF) algorithm, was used to predict the impact of key operational parameters—pH, dye concentration, and contact time—on removal performance, and the model's predictions aligned closely with experimental trends. These findings, supported by experimental data and predictive modeling, highlight the potential of FeZr-MOF/GO membranes as a scalable and robust material for sustainable water purification applications.

The use of sophisticated materials and nanoscale structures in the design of sports equipment is recognized as a key strategy for boosting athletic performance. The study of spinning small-scale structures, such as nanobeams and nanotubes, is centered on their potential use in the creation of next-generation sporting equipment. The distinct characteristics of these constructions, such as improved stiffness, vibration damping, and longevity, play an important role in improving the efficiency, control, and responsiveness of various athletic equipment. Nanomaterials are used in tennis rackets, golf clubs, and hockey sticks to efficiently eliminate undesired vibrations while increasing energy transfer upon impact, boosting player comfort and performance. These structures’ rotational dynamics closely resemble real-world circumstances encountered by sports equipment, such as the swinging motion of a bat and the bending of a ski. The nonlocal strain gradient theory provides useful insights for improving material behavior in dynamic loading situations, notably in terms of size effects at the nanoscale. Case studies and practical examples demonstrate how these innovations support athletes in improving their power, accuracy, and the longevity of their equipment. A connection exists between nanotechnology and sports engineering, facilitating the development of lighter, stronger, and more efficient technologies that enhance athletic performance capabilities. The significance of diverse methods for enhancing sports technology is emphasized, providing advantages for both elite athletes and recreational users.

AbstractE‐learning, as a complex system, includes distance learning, teaching materials in various forms and shapes, group and individual learning processes, as well as interactive and tutorial work. To increase the effectiveness and efficiency of the e‐learning system, it is necessary first of all to consider the characteristics of students and their learning styles. Based on the data collected in various ways, in surveys, using the distance learning dystem (DLS) Moodle, based on the subjective assessment of the subject teachers, as well as based on data from the business information system, the student preferences are determined. Then, based on these data, an adaptation is made, a process that adapts the work of the DLS based on student knowledge. The primary goals that can be achieved through the adjustment of the e‐learning system are to improve the design and usefulness of the course, help with finding information on the course, more efficient searching and placement of search results in the context of students' interest, as well as increasing students' loyalty to a higher education institution.

This study aims to analyze the influence of sugarcane bagasse fiber (SCBF) without treatment on concrete and its impact on carbon footprint production. This review studies the impact of SCBF on the compressive strength, flexural strength, direct tensile strength, and elasticity modulus, considering fiber percentages of 1%, 3%, 5%, and 6%. The results showed that SCBF had a negative influence on concrete because as the percentage of fiber increased, it started to become invasive in the concrete mix and proportionally influenced the strength reduction, obtaining a maximum decrease of 60.96% in the compressive strength. However, the CO2 emissions decreased as the fiber percentage increased, generating maximum emission savings of 17.19%.

Background The rapid growth of restaurants due to the changing lifestyle has imposed unnecessary impacts on environmental sustainability following an increased generation of restaurant wastewater (RWW). RWW contains alarming concentrations of fats, oils, and greases (FOG), chemical oxygen demand (COD), biochemical oxygen demand (BOD), and nutrients, including nitrogen and phosphorus. Microalgae are known to be able to treat wastewater and provide simultaneous production of biomass and other valuable metabolites (e.g., lipids, proteins, and carotenoids). Numerous studies have been reported on treating various types of wastewater using microalgae. However, studies still need to be reported on treating RWW using microalgae collected from grease traps. Methods This research aims to determine the potential of the freshwater microalgae Chlorella vulgaris (Chlorella vulgaris) in treating RWW-containing pollutants (COD, BOD, FOG) and nutrients (TN, TP, AN, K) via optimal autotrophic cultivation conditions (i.e., pH, temperature, light intensity, and aeration). Significant Findings The conditions for the batch scale cultivation of Chlorella vulgaris opted as an autotrophic mode with a temperature of 25 °C, aeration of 3 litres per minute supplemented with 3 % CO2 (v/v), and an irradiance range of 80–150 μmol/m2/sec. Maximum specific growth rate and biomass productivity achieved were 0.14 day-1 and 42 mg/l/d, respectively. The maximum pollutant removal efficiency was 98 % for COD, 98.5 % for BOD, 96.8 % for FOG. While the nutrient uptake achieved was 99.7 % for total nitrogen (TN), 99.9 % for ammoniacal nitrogen (AN), 99.9 % for total phosphorus (TP), and 97.8 % for potassium (K). Therefore, this study shall provide an alternative potential solution by proposing treatment using microalgae and cultivating it with RWW. No study has been reported to date using freshwater microalgae Chlorella vulgaris to evaluate its potential in removing pollutants, nutrients, and FOG in RWW collected from GGI. The removal efficiencies indicated that the RWW acclimatised well with Chlorella vulgaris, thus providing an environmentally sustainable and economically viable treatment method.