Evaluación de lesiones macroscópicas de los diferentes lóbulos pulmonares en la especie porcina usando un modelo de clasificación porcentual

Respiratory diseases in pigs have a great economic impact, considering it is one of the main problems in intensive swine production. The objective of this study was to macroscopically evaluate the different pulmonary lobes in a processing plant located center-west of Risaralda, using a percentage qualification model. Through a descriptive study, 358 lungs were evaluated during the evisceration phase, the specimens came from 9 lots of different farms. Data was collected according to the degree of macroscopic lesion observed for each of the pulmonary lobes in percentages. With this data, averages were taken for each of the lobes and compared between the total of samples observed and for each of the lots. In addition, more specific lesions were evaluated on a scale of 0-5 as indicators of pleurisy and scarring. The analysis of the macroscopic observations showed that the majority of the lungs, presented some degree of lesion with an 85% (305/358) while only 15% (53/358) showed no type ...

Evaluación de riesgo de cambio, caso de aplicación en empresa importadora

This applied investigation had as objective to establish a shortterm financial cover to control the impact of loss on profits due to the exchange rate risk on the COP/USD ratio, in a company dedicated to the import and marketing of tires in Colombia. For the above, it was necessary to carry out a quantitative analysis between the options and forward coverage, requiring the use of the Black Scholes technique for the calculation of the premium; Likewise, it was necessary to simulate through different forecasting methods to choose the lowest RMSE error, presented as a result the time series which was used to project the future behavior of the dollar through the Risk Simulator software. Finally, it was evident that a great part of the background for the present investigation is of a qualitative type, some of the existing quantitative origin are not focused on case studies; otherwise, the results obtained allowed to demonstrate that the best coverage is the purchase of the Call in The Money ...

Cratílo: un estudio sobre el lenguaje en platón. Tesis doctoral

This paper gives an overview of what was a long doctoral thesis process. Its results, implications and consequences arising from the academic exercise carried out over more than 7 years make up the centerpiece of this text. The results contain different exercises of writing and they are the central focus of the text. In the same process the results are evident at the level of directed theses, creation and participation in academic events as well as other products. These aspects are undoubtedly constitutive of the academic philosophy’s work and that, therefore, help to the institution (Technological University of Perira) in diferent ways such as the Graduate Program in Philosophy and the Master Program to establish itself as a leading program with its research group in Ancient Philosophy.

Transformación de un vehículo de combustión a eléctrico

Colombia, like other developing countries, has been incorporating various electric vehicles in its automotive park, motivated by an emerging policy of incentives, a concern for the environment and health, and a high cost of fuel; however, these types of vehicles remain relatively expensive. The transformation of thermal vehicles (combustion engine) to electric vehicles becomes an interesting option, due to its low cost compared to new commercial electric vehicles and the positive environmental impact which represents. The present work illustrates the technological steps that have been required in the transformation from a traditional internal combustion vehicle to an electric one (sprint vehicle), showing the economic benefit and the impact on the attenuation of greenhouse gases. The analysis of the traction dynamics and validation with various laboratory and field (road) tests, have shown the viability of a transformed vehicle, which satisfies the power demands under different load...

Técnicas moleculares empleadas para la detección de babesia spp. en bovinos: revisión sistemática

Bovine babesiosis is one of the most important parasitic diseases in the world, it is caused by protozoa of Babesia genus and generates anemia, anorexia, weight loss, jaundice and hemoglobinuria generating loss in production and even the death of the animal. Serological tests are relatively inexpensive and efficient to detect the parasite, but the results depend on factors inherent to the animal and the state of infection. Molecular markers are more precise tools to detect the parasite. The aim of the current systematic review was to review original studies, published between 2010 and 2018, in which molecular techniques were implemented to detect the parasite. The research was carried out using PubMed, LILACS, SciELO and Science Direct databases. 196 records were identified according to the research criteria and only 47 were analyzed. The main molecular techniques reported include Polymerase chain reaction (PCR), nested PCR (nPCR) and semi nested PCR, Real time PCR (qPCR), Reverse ...

Análisis bibliométrico de los avances en el área de ingeniería y materiales en carreteras rurales

part of urban environments, characterized by low traffic, by interconnecting communities located in towns and villages, allow access to the agricultural market and the design speed is less than higher-ranking routes. Rural roads are extremely important infrastructure for the social and economic development of rural communities, often located in mountainous or semidesert places, where access to basic health and education services is very complex. In this paper, a bibliometric analysis has been applied to the theme of rural roads to identify the most important trends and influences, facilitating an organized view of the peculiarities and developments in their field of research. Consequently, a total of 433 publications made between 1968 and 2020 related to the term rural roads in Scopus were identified. The 433 publications contain 878 authors, 176 journals, 41 countries or territories, and 321 institutions. From the analysis completed, four main research areas related to the rural roads...

Ají (capsicum annuum l.var. cayenne) como aditivo alimentario para conejos

Chili is used as a substitute for growth promoting antibiotics in animal production. The objective of this work was to evaluate the effect of supplementation with Chili Powder (Capsicum annum L. var. Cayenne) on fattening rabbits consuming commercial concentrate during the fattening phase on productive performance, carcass, digestive system size and digestibility of the diet. We used 10 rabbits of the New Zealand White breed with 30 d of age that were randomly distributed in the treatments according to a completely Randomized Experimental Design. The treatments consisted of two diets: a control in which concentrate was supplied without Chili and another in which the concentrate of the control treatment was mixed with Chili Powder (20 g kg-1 of concentrate). Feed Chili Powder did not affect live weight (P>0.05), feed intake (P=0.6076), feed conversion rate (P=0.4849), diet digestibility (P>0.05), weight carcass (P=0.5396), weight of different portions of the digestive system (P>0.05), ...

Modelado de Información de Construcción desde un análisis bibliométrico

Bibliometry is responsible for applying mathematical and statistical methods to scientific research; this discipline is responsible for measuring scientific studies by applying quantitative variables to articles or texts produced by a scientific nature. A bibliometric analysis was carried out where the term "BIM" was consulted, which is the acronym for Building Information Modeling. The search was carried out in the scientific research portal Web of Science, obtaining 684 journal articles related to civil engineering and construction technology. Additionally, the bibliometric analysis software (Bibliometrix) was implemented with which analysis of co-occurrence, cocitation, and co-authorship was carried out, which allowed the study carried out to be better visualized in graphic form. The results of the research show growth in Building Information Modeling research in recent years, noting that the countries with the highest contributions are China, the United States, and the United...

Integridad intestinal en pollos de engorde alimentados con ensilaje de ramio (boehmeria nivea) mezclado con afrecho de yuca (manihot esculenta)

Bird’s intestinal health is determinant because of its connotation on disease control, but also because it is the source of utilization of nutrients that results in successful production. Conventional raw material used for the fabrication of concentrate is expensive and has low availability, for these reasons, food alternatives with indigenous resources such as forage, have been sought out. In this way, B. nivea stands out as an alternative for feeding birds. The goal of this study was to determine the effect of using silage from B. nivea mixed with cassava bran (Manihot esculenta) on the intestinal integrity of fed broilers. 60 male broilers of the Ross 308 line were located in 12 pens, to each of which a completely randomized experimental treatment design was given. The treatments consisted in two types of diets provided to the birds, a control group that was only given concentrate and another group, that additional to the concentrate used in the control group, was given B. nivea ...

Aplicación de un modelo de competitividad para las zonas francas permanentes en Colombia

This article aims to show the importance of determining the level of competitiveness of the Permanent Free Trade Zones (PFTZ) in Colombia, from the applicability of a business competitiveness model that seeks to analyze their competitive potential and establish strategies for the optimal development in this sector. A diagnosis of the permanent free trade zones in Colombia was carried out, in which aspects such as: the subsectors in which the free trade zones are focused, percentage of participation, number of industrial users of goods or services, promotion of free trade zones through electronic means, types of certifications they have, among others; Immediately afterwards, the Business Competitiveness Model of Manuel Humberto Jiménez was applied to 10 PFTZ of Colombia, which allowed determining the level of competitiveness of these, it should be noted that for the application of the model, a questionnaire of 22 questions was designed that were applied to some of the senior managers ...