Conference Agenda

Abstract- The study aims to examine the impact of photovoltaic systems in rural areas without access to electricity in Latin America, identifying best practices, lessons learned and opportunities for future research. This will provide a basis for informed decisions and effective policies to promote sustainable development in the region. A systematic literature review was conducted using the PICOC strategy to formulate questions on quality of life, environmental impact, economic benefits and sustainable development. Databases such as Scopus were used and rigorous inclusion and exclusion criteria were applied. The selection process followed the PRISMA methodology to ensure completeness and objectivity. The results showed that between 2020 and 2024 more studies on photovoltaic systems were published. Brazil is the leading country in terms of number of studies, followed by Colombia, Bolivia, Ecuador, Argentina, Mexico and Peru. The results show that solar energy has made it possible to expand energy coverage, reduce carbon emissions and foster economic development by boosting agricultural, commercial and tourism activities. Furthermore, it was identified that, although the initial investment in solar panels remains an obstacle, the operational and maintenance costs are significantly lower in the long term. However, the literature reviewed highlights the need for affordable financing strategies, recycling programmes for solar components and technical training to ensure the sustainability of these systems. In conclusion, PV represents a viable solution for rural electrification, but its long-term success will depend on policy.

The constant increase in student populations and fluctuations in the schedules of university students impact infrastructure decisions and resource allocation in university service facilities such as dining halls. It is necessary to evaluate these fluctuations and, based on projections, determine the sizing of infrastructure and resources that allow attention within adequate operational levels of student services on university campuses. Discrete Event Simulation (DES) allows us to represent the service processes in the canteens, capturing data and trying to reflect the stochastic behavior of arrivals in order to then propose a model based on optimization that allows us to identify the optimal sizing of all the resources involved. attention. The experimentation of scenarios with the model and frequent runs based on population updates of the data based on projections to the last semesters, allows for a preventive response to ensure an adequate level of service.

The research “Evaluation of the physical mechanical behavior of concrete f'c=280 kg/cm² with partial replacement of recycled coarse aggregate in pavers, Trujillo” is aligned with the Sustainable Development Goals (SDG), particularly with SDG 11, by promoting sustainable practices through the use of construction and demolition waste (CDW). The objective was to evaluate the impact of partially replacing natural coarse aggregate (AGN) with coarse recycled aggregate (ARG) in percentages of 10%, 30%, 40% and 50%. The study had a quantitative approach, applied experimental type, and used an experimental research design. The sample consisted of 120 concrete pavers subjected to compression, bending, abrasion, absorption and dimensional variation tests. The instruments included records and guides. The results showed that with 10% ARG, the concrete paver achieved a higher compressive strength than proposed. However, by increasing the proportion of ARG to 30, 40 and 50%, a decrease in mechanical properties (strength) was evident. In conclusion, the results show that with the replacement of 10% of ARG to replace the natural coarse aggregate, it is viable to produce pavers for pedestrian pavement, which comply with NTP 399,611 and contribute to the reduction of the use of natural resources.

Workplace safety in high-risk industries has been a growing concern due to the significant impact of workplace accidents. This systematic literature review aims to evaluate and synthesize published studies on strategies used to reduce the rate of workplace accidents in high-risk industries, identifying the most effective procedures to mitigate these risks. To achieve the stated objective, articles were collected between 2020 and 2024 from the Scopus and PubMed databases, using specific keywords to perform an exhaustive search and obtain as many relevant studies as possible. The inclusion criteria were studies that address the reduction of occupational accidents and describe or apply preventive methodologies. Studies outside the industrial field were excluded. Finally, the PRISMA flow chart was used to select and evaluate studies, of which 58 articles were selected. From this review, results indicated that the most effective strategies include safety training programs, implementation of personal protective equipment, and workplace safety management systems. Specific interventions varied by industry type and associated risk, highlighting the importance of tailoring strategies to specific contexts. The studies showed a significant reduction in the rate of workplace accidents after the implementation of these strategies. The review concludes that, although there are a variety of effective strategies, a contextualized application adapted to each industry is crucial to maximize accident reduction. Some studies also identified limitations, such as a lack of long-term follow-up and the need for further research in real-world settings.

The objective of the research was to evaluate the impact of incorporating Aloe vera gel and the waterproof SikaCem additive on improving the resistance and permeability of 210 kg/cm² concrete. It aligns with Sustainable Development Goals (SDG) 9 (Industry, innovation and infrastructure) and 12 (Responsible production and consumption), promoting more sustainable practices in construction. The study was of an applied type with experimental design and quantitative approach, using 48 test tubes as a concrete sample with different dosages of Aloe vera (0.5%, 0.75%, 1%) and SikaCem (1.5%, 1.25%, 1%), evaluated according to ASTM and NTP regulations. Compressive strength and concrete permeability tests were carried out. The results show that the mixture design with 0.5% of Aloe vera and 1.5% of SikaCem was optimal, reaching a resistance of 241.98 kg/cm² at 28 days, an increase of 15% and reducing permeability from 7.66% to 3.59. %, then it dropped by 53% compared to concrete 210kg/cm². Conclusion, Aloe vera and SikaCem improve the resistance and durability of concrete in a sustainable way, being ideal for constructions in coastal areas or with high humidity due to their effectiveness in mechanical properties and impermeability.

The construction sector has a high occupational incidence rate, mainly due to musculoskeletal injuries caused by ergonomic risk factors in the various construction site activities. This research aims to identify these risks in the construction process of concrete elements and develop an occupational health and safety model using the tools PHA, the HIRARC matrix, and the OWAS method, to reduce the rate of musculoskeletal injuries and occupational incidents.
The proposed model includes the use of technical data sheets, checklists for machinery maintenance, and the proper use of personal protective equipment (PPE). In addition, ergonomic measures such as the use of lumbar belts and knee pads were implemented, along with safety, occupational health, and ergonomics training specific to the construction site environment. In addition, visual materials were developed, such as informative posters on the correct use of PPE and stretching exercises, promoting both risk prevention and workers' well-being.
The results obtained revealed significant improvements in the key indicators of the company under study. The rate of musculoskeletal injuries decreased from 26.67% to 13.33%, while the rate of occupational incidents decreased from 46.67% to 3.33%. These advances reflect a considerable positive impact on workers' health and safety.
The project is financially viable and profitable, with a Net Present Value (NPV) of USD 4,451.20, indicating that the financial returns outweigh the investment made.