Conference Agenda

The study technically and economically evaluated the application of HiWAY hydraulic fracturing in eight wells of the Shushufindi-Aguarico field, selected from a population of 18 wells stimulated using conventional fracturing and HiWAY, with the objective of determining its impact on the estimated final recovery and profitability indicators. The scope included a comparative analysis of production performance before and after stimulation. Oil and water production histories, petrophysical and PVT properties, operating parameters, and workover costs were examined; production was projected over 15 years using hyperbolic decline in pessimistic, most likely, and optimistic scenarios, and uncertainty was assessed with Monte Carlo simulation; in addition, net present value, internal rate of return, benefit-cost ratio, and payback period were calculated. The results showed increased recovery in six wells; In Shushufindi-155D, production increased from 557,530 to 1,533,580 barrels, and in several cases, production tripled or increased by up to 50%. In contrast, Shushufindi-98D experienced reduced recovery and a significant increase in water cut due to injector connectivity, while Shushufindi-74 showed economic deterioration. In successful cases, the internal rate of return exceeded 75%, and the net present value reached $36.28 million. It was concluded that HiWAY proved profitable in most wells, contingent upon adequate geological characterization, hydraulic connectivity, and proximity to the oil-water contact.

Small- and medium-scale fermentation processes often present problems of thermal stratification and energy dependence due to the use of agitators and thermal systems powered by conventional electricity. This article presents the design and pilot-scale experimental evaluation of a renewable energy-assisted fermentation system that integrates: (i) two thermal tanks (primary for heating and secondary for cooling), (ii) wind-powered agitation with electrical recovery via a generator/charger, and (iii) servomotor-controlled magnetic braking to stabilize mixing speed under wind variations. Performance metrics were established in terms of thermal uniformity (ΔT), agitation stability (RPM), energy balance (E_rec, E_cons), and overall efficiency (η). The results indicate that wind agitation reduces thermal stratification from ΔT=5.4 °C (without agitation) to ΔT=0.8 °C with magnetic braking, and that the system recovers around 94% of its electrical demand in a 6-hour cycle under moderate wind conditions.

This research presents the design, implementation and experimental validation of a low-cost photometric device for real-time monitoring of dissolved oxygen concentration and turbidity in wastewater. The system integrates an RGB-LED illumination module with an LDR GL5528 sensor and a PIC18F4550 microcontroller. A total of 60 experimental measurements demonstrate dissolved oxygen values of 0.0052±0.0008 mg/L (Sample A, n=30) and 0.0058±0.0007 mg/L (Sample B, n=30) with average errors below 10%. The calibration curve (n=60 samples) yielded R² = 0.9847, validating the system's accuracy.

This study provides a structured assessment of power flow methodologies applied to standard IEEE test systems, combining technical analysis with ethical evaluation. Simulations based on the Newton-Raphson and Fast Decoupled Load Flow methods were conducted on the IEEE 9-, 14-, and 39-bus networks to examine steady-state behavior under different operating conditions. The results revealed variations in voltage profiles, line utilization, and active and reactive power losses, often influenced by network topology and generation-load balance. The integration of renewable sources, modeled at various penetration levels, yielded measurable benefits in voltage stabilization and loss reduction when appropriately sited. In addition to technical performance, the study addressed structural conditions such as undervoltages and line congestion, which may reflect inequities in network service. Fairness-aware optimal power flow formulations were applied to investigate dispatch solutions that minimize losses while promoting balanced operational outcomes. The findings underscore the relevance of embedding transparency, equity, and accountability into the design and control of modern power systems.

This research develops and applies a techno-economic-regulatory (TER) model to evaluate and optimize the profitability (NPV and IRR) of a Clemesí-type bifacial solar power plant in Moquegua, Peru. The approach integrates into a single calculation structure: (i) technical variables (irradiance, albedo, temperature, and bifacial gain), (ii) economic-financial variables (CAPEX, OPEX, cash flows, NPV, IRR, and LCOE), and (iii) regulatory variables (RER bonus and annual transmission tariff, in addition to assumptions regarding operational recognition/certification). The study follows an applied modeling and simulation design with an instrumental case, using operational information from the 2024–2025 period to parameterize and verify the consistency of the model. The technical module takes as a reference an annual generation of 282 GWh/year (~2452 kWh/kWp) and a base albedo of 0.25 associated with a reported bifacial gain of 11.4%, incorporating the thermal effect. This energy feeds into the economic-regulatory module, parameterized with a price of $0.05/kWh, CAPEX of $81.00 million, OPEX of $1.61 million/year, transmission of $2.07 million/year, RER bonus of 10%, discount rate of 11%, and a 25-year horizon. With these assumptions, the base case establishes a consistent reference of NPV ≈ $18.63 million, IRR ≈ 14.06%, and LCOE ≈ $0.0398/kWh. Two fronts are evaluated: (1) optimization by installation height (0.5–2.5 m), where NPV and IRR improve within the analyzed range; and (2) regulatory/technical-regulatory scenarios (recognition of back-end gains, transmission reduction, and revenue increase), showing that the levers associated with revenue shift NPV/IRR more than proportional reductions in transmission costs under the same discount and horizon.

Perchlorate (ClO₄^-) has emerged as a contaminant of growing concern in soils due to its widespread occurrence and adverse effects on terrestrial ecosystems as an endocrine disruptor. Perchlorate affects metabolism, reproduction, and development of animal and plant species. The primary exposure pathway of ClO4- for humans is through ingestion, inhalation, and contact, causing hypothyroidism and cardiovascular diseases. The objective of this study is to determine the effects of perchlorate on plants grown under greenhouse conditions, using corn (Zea mays) and bean (Phaseolus vulgaris), and lemongrass (Cymbopogon citratus) as evaluated species. The methodology used included three stages: [1] Design and construction of a greenhouse for in vitro growth tests; [2] Determination of the effects of perchlorate on the cultivated plants [3] Statistical analysis. The results obtained indicate species-specific differences in sensitivity to perchlorate exposure, with statistically significant effects observed in Zea mays, while C. citratus and P. vulgaris exhibited comparatively lower susceptibility. These findings highlight the heterogeneous impact of ClO₄⁻ exposure on Cymbopogon citratus, Phaseolus vulgaris, and Zea mays plants under greenhouse conditions.