BIBDIGITAL

In this paper, the partitioning hypergraph problem in a fixed number of components is studied. Hypergraphs are the generalization of graphs where, unlike edges, each hyperedge can connect two or more vertices. Given a hypergraph H = (V,E), where V is the vertices set and ...

This project presents the design of a bolted joint working under fatigue with an adequate load distribution because the greater load is absorbed by the parts while the bolt absorbs less load, this design is optimal for the correct functioning of the bolted joint and incre...

Oil extraction in offshore fields is carried out with floating storage, and offloading units (FPSO) for oil production, attached with risers to a balcony. These vessels have roll movements that can be reduced by using a passive compensation system. In this project, a me...

The eggshell powder composite research process is an innovative technique that aims to improve sustainability in material manufacturing. There are several areas where this powder has been used as reinforcement in paint. The manufacturing process of these propellers has been carried out ...

The work presented below aimed to design an artisanal alcohol rectification plant to produce human-consumable ethanol in the Pangua canton, on land owned by ASOEMPRAC members, under environmental conditions of 0.86 atm and 25°C. The operational design considered a feed flow rate of ...

Titanium silicalites are catalysts commonly used in the selective oxidation of olefins. However, their recyclability is limited by their particle size, so the synthesis of catalysts with a magnetic core surrounded by a titanium silicalite shell is proposed as an alternative to this ...

Steel dusts are toxic waste from electric arc furnaces due to the presence of lead and cadmium, so their release into the atmosphere is harmful. Currently, they are processed by pyrometallurgical processes with recoveries greater than 90 % in the form of ZnO, while hydrometall...

Steel mill dusts are hazardous residues generated in steel fusion and refining operations. These residues contain heavy metals such as zinc, lead, and cadmium, with zinc being the predominant component due to its corrosion-resistant properties. Although current methods exist for treating the...

This study is the simulation of a distillation column to rectify artisanal alcohol using Aspen Hysys software. The main goal is to size and optimize this equipment to purify ethanol through the rigorous application of thermodynamic and phase equilibrium models. Initially, Aspen Hysys&#x...

In the present work of curricular integration, the objective was to elaborate an improvement proposal for the reduction of the environmental impact in the manufacture of whole milk of the company Gloria Ecuador located in the province of Pichincha. For which, the carbon footprint&#...

Food waste (FW) is an important global issue. For about 1.4 billion hectares that means the equivalent to 28% of the wold’s land area, used for agriculture, are filled with food what will be wasted. Because of this, environmental problems occur since the production ...

Theobroma cacao CCN 51 has become popular for its high yield and pest resistance. However, its pronounced acidity and astringency pose a challenge to market acceptance. Conventional fermentation methods have had limited success in reducing these off-flavors. This study explores...

The present work studies the influence of the molar ratio of tetrapropylammonium hydroxide (TPAOH) TPAOH/(Ti+Si) on the synthesis of cobalt ferrites (CoFe2O4) covered by a dense layer of silica and a mesoporous layer of titanium silicalite with application in selective oxidation reactio...

Simulation has become a fundamental technique to reproduce and analyze behaviors without the need to bring them to reality. This is very useful in the engineering field. In the present work, the simulation of a shell and tube heat exchanger with potassium carbonate as phase&#x...

The study of toxic gas dispersion is a crucial topic due to its potentially dangerous impacts on human health and the environment. To understand how these gases disperse in the environment, various mathematical models have been developed, including the advection-diffusion equation. Simulatio...

The present project corresponds to a research study developed in the San Luis de Miravalle neighborhood, located southeast of the Metropolitan District of Quito (DMQ), in which an analysis of slope stability was carried out, considering rain as a triggering factor. The safety facto...

Poverty is associated with a lack of monetary resources, which are generated, among other ways, through employment. However, the lack of job opportunities in the formal sector has pushed people to enter the informal market. Low incomes and poor labor informality conditions generate ...