Advances in Science and Technology Vol. 151

Abstract: CO₂ levels in the world are constantly increasing and have generated a great impact on reinforced concrete structures causing increased carbonation. The phenomenon of carbonation causes corrosion of the reinforcing steel, therefore, reinforced concrete structures present a high risk of corrosion of its reinforcing steel causing the reduction of the useful life of the structure, or in extreme cases, a demolition must be carried out. The objective of the present study is to propose a prediction model for carbonation depth in pure concretes which are not designed for durability (w/c<0.50), but when they are designed for resistance (w/c>0.55). CEB-FIP model presents the limit of serving only for concrete with w/c<0.50, due to this, the present study proposes a model that will help as a reference to estimate the useful life of structures that are built and designed in cities where they do not are exposed to these durability conditions. The modified model for predicting the carbonation depth based on CEB-FIP in pure concrete with high w/c (0.60 and 0.72) uses the parameters of temperature, relative humidity, CO₂ concentration, and water/cement ratio. The objective is to obtain the accuracy of the modified model for predicting the carbonation depth in concrete over the years. For the results, the theoretical data obtained from the modified model was used and a comparison was made with the experimental results obtained from concrete specimens tested inside an accelerated carbonation chamber to find the model's accuracy.

Abstract: High-performance computing equipment uses graphic processors, known as GPUs, as a mechanism for high computational capacity. To increase the computational capacity, additional graphics processors are added in the configurations. This strategy increases the computational capacity as well as considerably increases the temperature generated by the entire system, normally the GPUs have cooling systems, which help to cool as much as they are required, the operating systems have automatic mechanisms to access the GPUs, these functions are activated when it is required to use them, in the event of a need for high computing capacity requirement. In this work we demonstrate a method to analyze the operation of computing equipment when working on high-performance functions, such as video games, which require high computational capacity to be able to play in real time and perform the tasks. Necessary renderings, the method can be applied to other applications that are necessary to ensure the continued operation of the computing equipment.

Abstract: The combustion engines are widely used in the daily life of people, in cars, we find them with greater emphasis, and currently hybrid engines and electric motors are being used. In this analysis, one of the important factors for the failure of combustion engines is the temperature, for which cars have cooling systems, through the use of radiators and coolant-based systems. In this work we present a methodology for the analysis of the state of the components of the combustion engine system in cars, through the use and analysis of thermal images, for which it is necessary to identify the zones or control points depending on the model and type of engine and car, The analysis procedure requires a thermal camera, the results presented are related to the comparison of an optical and thermal image, in order to locate the control point, the method can be applied by mechanics, maintenance personnel and car drivers themselves, to analyze the condition of their car.