Tópicos Sugeridos dentro de su búsqueda.
Tópicos Sugeridos dentro de su búsqueda.
Buscar alternativas:
process during » process using (Expander búsqueda), press during (Expander búsqueda), process mining (Expander búsqueda)
during methods » working methods (Expander búsqueda), making methods (Expander búsqueda), dating method (Expander búsqueda)
process during » process using (Expander búsqueda), press during (Expander búsqueda), process mining (Expander búsqueda)
during methods » working methods (Expander búsqueda), making methods (Expander búsqueda), dating method (Expander búsqueda)
1
objeto de conferencia
Publicado 2021
Enlace
Enlace
On January 30 of 2020, The World Health Organization declared the pandemic crisis as the first public emergency with international importance. Because of this, many building projects were paralyzed since then and the building industry experienced changes that have brought the inclusion of new tools to achieve the objectives of the projects. The purpose of the present paper is to present the application of Choosing By Advantages (CBA) methodology to select the best alternative in the material removal system in the execution of basements in a project that was paralyzed by the health emergency COVID 19. CBA is a lean tool used to make decisions with clarity and transparency and in this case is used to consider the constraints of COVID-19 protocol to guide in decisions making. This methodology was applied to a case study for a building project in the basement construction phase that restarts...
2
artículo
Introduction: The changes in the academic life of graduate students due to the pandemic generated complex socioemotional processes that need to be explored. Objective: to compare the socioemotional processes in graduate students during the closure of universities according to the area of knowledge and sex. Method: exploratory-descriptive-comparative quantitative study with a cross-sectional design. A total of 119 questionnaires were analyzed using the Mann-Whitney U non-parametric statistical test to determine significant differences in the independent variables. Results: Significant differences were identified before and during the pandemic in prosocial emotions and mood affectations in both groups of students due to the overload of academic-work activities and the differentiated conditions by area. Women in area 2 were more affected. Discussion: the socio-structural and situational con...
3
artículo
Introduction: The changes in the academic life of graduate students due to the pandemic generated complex socioemotional processes that need to be explored. Objective: to compare the socioemotional processes in graduate students during the closure of universities according to the area of knowledge and sex. Method: exploratory-descriptive-comparative quantitative study with a cross-sectional design. A total of 119 questionnaires were analyzed using the Mann-Whitney U non-parametric statistical test to determine significant differences in the independent variables. Results: Significant differences were identified before and during the pandemic in prosocial emotions and mood affectations in both groups of students due to the overload of academic-work activities and the differentiated conditions by area. Women in area 2 were more affected. Discussion: the socio-structural and situational con...
4
artículo
Publicado 2019
Enlace
Enlace
Cocoa beans fermentation is a spontaneous process of post-harvest very important for the development of chocolate aroma and flavor, which involves a number of complex microbial activities. In this work, we identify the microorganisms present in cocoa beans before, during and after the fermentation process, applying DNA sequencing analysis and MALDI TOF / TOF mass spectrometry. With the first method, the predominant bacteria and yeast identified were Lactobacillus plantarum (29%), L. brevis (18%), Bacillus cereus (15%), Pediococcus acidilactici (12%), and Pichia kudriavzevii (100%). The most important peptide sequences of each identified strain by mass fingerprint were characterized too. By the second method, 51 species of microorganisms being 73.7% bacterial species and 26.3% yeast species were identified. Additionally peptide sequences responsible Vicilin protein characteristic aroma of...
5
artículo
Publicado 2019
Enlace
Enlace
Cocoa beans fermentation is a spontaneous process of post-harvest very important for the development of chocolate aroma and flavor, which involves a number of complex microbial activities. In this work, we identify the microorganisms present in cocoa beans before, during and after the fermentation process, applying DNA sequencing analysis and MALDI TOF / TOF mass spectrometry. With the first method, the predominant bacteria and yeast identified were Lactobacillus plantarum (29%), L. brevis (18%), Bacillus cereus (15%), Pediococcus acidilactici (12%), and Pichia kudriavzevii (100%). The most important peptide sequences of each identified strain by mass fingerprint were characterized too. By the second method, 51 species of microorganisms being 73.7% bacterial species and 26.3% yeast species were identified. Additionally peptide sequences responsible Vicilin protein characteristic aroma of...
6
artículo
Publicado 2012
Enlace
Enlace
Scallion (Allium fistulosum) is a highly perishable green vegetable due to its moisture content, its high metabolic rate and their poor conditions of post-harvest during to harvest and transport. The objective of this research was to determine the relationship between visual deterioration´s product and changes generated in the mechanical and acoustic properties of the same. The scallion grown in Aquitania, Boyacá Colombia was stored under different conditions of storing: vacuum packed (10 mbar) and unpacked (HR 68%) and storage temperature 4 ºC and 16 ºC until deterioration by visual appearance. The acoustic mechanical changes in firmness, crispness and fracture for unpacked scallion and stored at 4 °C occurred on day 15 of storage, and visual deterioration on day 13. For the unpacked product and stored at 16 °C, the biggest change was presented at sixth day. The vacuum packed prod...
7
artículo
Publicado 2012
Enlace
Enlace
Scallion (Allium fistulosum) is a highly perishable green vegetable due to its moisture content, its high metabolic rate and their poor conditions of post-harvest during to harvest and transport. The objective of this research was to determine the relationship between visual deterioration´s product and changes generated in the mechanical and acoustic properties of the same. The scallion grown in Aquitania, Boyacá Colombia was stored under different conditions of storing: vacuum packed (10 mbar) and unpacked (HR 68%) and storage temperature 4 ºC and 16 ºC until deterioration by visual appearance. The acoustic mechanical changes in firmness, crispness and fracture for unpacked scallion and stored at 4 °C occurred on day 15 of storage, and visual deterioration on day 13. For the unpacked product and stored at 16 °C, the biggest change was presented at sixth day. The vacuum packed prod...
8
objeto de conferencia
Publicado 2018
Enlace
Enlace
The leaching of valuable metals from mineral ores is the basis of several extractive economies around the world, but the strategies employed often need to rely on dangerous compounds such as cyanides. Due to the complex nature of most ores, leaching processes are slow and have a low efficiency in noble metal extraction, which is usually improved by fine-milling the mineral. In this manuscript, we consider this strategy, demonstrating that it may increase the amount of silver leaching, but at the expense of a higher consumption of cyanide, which renders the process inefficient (only 2% of consumed cyanide is employed to complex silver). The increase in the yield of the desired product without the smarter use of dangerous compounds is shown as a paradigm of the need to insert green chemistry principles in industrial processes. We further present the result of two potential strategies for g...
9
artículo
Publicado 2018
Enlace
Enlace
Objective: Compare the artificial teeth changes position in the maxillary total prosthesis at the time of pressing, by measuring at certain pre-determined reference points, under different types of pressure force of 800, 1 000 and 1 250 kg, using Type III gypsum (Whip Mix, USA®) and condensation silicone (Zhermack, Italy) as inclusion materials. Methods: 36 superior prostheses obtained from a plaster model of a single total edentulous patient were fabricated. The copies were randomly divided into 6 groups each with 6 repetitions, considering the involved variables, materials and evaluiated strength after press and process of being transformed in acrylic. The difference between the reference points was established by Autocad (21.2 version Autodesk, Spain). Results: significant difference was detected between silicone and gypsum at 1 000 force at 1% of significance level. Conclusions: Sta...
10
artículo
Publicado 2024
Enlace
Enlace
VINASSE IS ACIDIC, DARK BROWN WASTEWATER OBTAINED AS A RESIDUE FROM THE ALCOHOL DISTILLATION PROCESS, THE MAIN COMPONENT OF WHICH IS WATER, IN ADDITION TO MINERAL NUTRIENTS AND A HIGH ORGANIC LOAD. ELECTROCOAGULATION (EC) IS A TECHNOLOGY THAT GENERATES COAGULATING SUBSTANCES IN SITU BY OXIDIZING SACRIFICIAL ANODES THROUGH AN ELECTRIC CURRENT APPLIED TO THE ELECTRODES. DURING THE LAST DECADE, THE ELECTROCOAGULATION PROCESS HAS BEEN INTENSIVELY INVESTIGATED IN SEVERAL REVIEWS, DUE TO ITS EASE OF OPERATION, VERSATILITY, SUSTAINABILITY AND LOW ENVIRONMENTAL IMPACT. THE OBJECTIVE OF THE PRESENT WORK HAS BEEN TO MAKE A GENERAL REVIEW OF THE EC PROCESS, ITS PRINCIPLE, REACTION MECHANISM AND OPERATING PARAMETERS INVOLVED IN THE ELECTROCOAGULATION PROCESS. IN THIS RESEARCH, THE PRISMA METHOD WAS USED FOR THE ANALYSIS OF ARTICLES FROM DIFFERENT DATABASES SUCH AS SCOPUS, SCIENCEDIRECT AND GOOGLE SC...
11
artículo
Publicado 2013
Enlace
Enlace
This research‘s main objective quantification of iron content in sphalerites; differentiation of three types of sphalerites is obtained according to the iron content, which will be useful for the proposed solutions in the metallurgical problems. In this study themineralogical characterization of samples from the Paragsha concentrator, the mining district of Cerro de Pasco and especiallysphalerites using the method of optical microscopy was performed for which it was necessary to use a polarizing microscopereflected light.Studies was performed as accurately as in the case of modal analysis where estimates of the degree of liberation and mineralgicalassociation are made, the samples come from the metallurgical testing laboratory. The specimen was taken from the concentratorplant Paragsha, then sifted for the preparation of polished sections that were used for the characterization of each...
12
artículo
Publicado 2021
Enlace
Enlace
The paper covers the issues of theoretical frameworks that are being developing around the process of modelling social communication skills in children with special educational needs during language learning process using interactive teaching techniques. This draws from a wide range of philosophical and psychological works on social and pedagogical rehabilitation of children with special educational needs as one of priority zones in the world policy and educational system aimed at growing attention to widespread acceptance of people with different needs in all spheres of society. Methodology used in the study is theoretical, empirical, methods of collecting data, description and dealing out the outcomes of the research. The study reflects empirical analysis based on observation, interviewing, testing and pedagogical experiment, which took place in the secondary school № 2 of the Republ...
13
artículo
Publicado 2021
Enlace
Enlace
The paper covers the issues of theoretical frameworks that are being developing around the process of modelling social communication skills in children with special educational needs during language learning process using interactive teaching techniques. This draws from a wide range of philosophical and psychological works on social and pedagogical rehabilitation of children with special educational needs as one of priority zones in the world policy and educational system aimed at growing attention to widespread acceptance of people with different needs in all spheres of society. Methodology used in the study is theoretical, empirical, methods of collecting data, description and dealing out the outcomes of the research. The study reflects empirical analysis based on observation, interviewing, testing and pedagogical experiment, which took place in the secondary school № 2 of the Republ...
14
artículo
Publicado 2021
Enlace
Enlace
Globally, a large amount of agri-food waste is generated as a result of industrial processes or direct consumption of raw materials, and when discarded, they represent a factor of environmental pollution. Mango by-products have a great bioactive potential, especially because they contain phenolic compounds in which mangiferin predominates, in addition to a great variety of phenolic acids, flavonoids and tannins, which confer antioxidant effects against cancer, cardiovascular and neurological diseases, among others. In addition, it was demonstrated that they have an effect against a broad microbial spectrum, including multiple pathogenic bacteria and fungi such as Escherichia coli and Candida albicans, respectively. According to the literature, mango peel and seed extracts also have potential as an additive, by influencing the sensory and physicochemical characteristics of foods, which ha...
15
artículo
Publicado 2018
Enlace
Enlace
The presence of ochratoxin A (OTA), a mycotoxin with carcinogenic properties, was analyzed in the beans of Theobroma cacao L. "trinitario cacao" from the collection center of Pisana-Tingo Maria, of the San Martin Region, Peru. The samples were collected in four stages of production: harvesting, fermentation, drying and storage. The OTA was extracted using 60 % acetonitrile and purified by immunoaffinity columns and subsequent quantification by high performance liquid chromatography (HPLC). The recovery percentage of the method used was evaluated by using samples fortified with OTA, showing a recovery percentage greater than 95 %. The beans evaluated in the different stages of production did not show the presence of ochratoxin A and in the mycotoxigenic analysis the presence of fungi of the genus Fusarium, Penicillium and yeasts was evidenced.
16
artículo
Publicado 2025
Enlace
Enlace
Learning basic operations requires the integration of didactics and pedagogy as key elements in building mathematical concepts. Therefore, the objective of this article was to strengthen students’ understanding of multiplication through the design of a teaching sequence based on the Singapore Method. Considering the needs of third-grade students at Alejandro Humboldt School, a qualitative approach was adopted, complemented by descriptive analysis. A diagnostic test and a teaching sequence were designed and implemented with the participation of 20 third-grade students from the institution. The results showed that students exhibited demotivation and a lack of interest in activities involving multiplication. In addition, the results obtained from the diagnostic test and the support provided by the Milton Ochoa test highlighted the importance of strengthening their understanding. Thus, aft...
17
artículo
Publicado 2019
Enlace
Enlace
Objetivo: Identificar cuáles son las características maternas asociadas al diagnóstico de macrosomía fetal en el Hospital Sergio E. Bernales de enero a diciembre del 2018. Métodos: Se realizó un estudio de tipo observacional, analítico, retrospectivo, de casos y controles. La población estudiada fueron las gestantes con el diagnostico de macrosomía fetal atendidas en el servicio de ginecoobstetricia del Hospital Sergio E. Bernales enero a diciembre del 2018. A través de una ficha de recolección de datos, se extrajo la información de las historias clínicas, las cuales después fueron procesadas según el programa de IBM SPSS Statistics v25. Resultados: De 532 pacientes estudiados se obtuvieron 133 casos y 399 controles. La edad materna varía entre 14 y 45 años (edad media de 27,01). Se encontró asociación estadísticamente significativa entre macrosomía fetal y las sigui...
18
artículo
Publicado 2025
Enlace
Enlace
The global consumption of coffee has experienced a notable increase in the last decade. The high global consumption of coffee is mainly attributed to its psycho-stimulant effects, influenced by genetic factors, and the perceived health benefits, although adverse effects are also recognized in some individuals. The complex chemistry of coffee, influenced by the bean, roasting, and preparation, impacts its flavor and properties. This article explores the chemistry of coffee, from the Arabica and Robusta species and their origin, to the processing methods (wet/dry) that modify the green bean. Transformations during roasting (Maillard reaction) are analyzed, as well as how roasting and extraction affect compounds like diterpenes and caffeine, and the sensory characteristics of coffee. Finally, the use of chemical techniques to determine the origin and purity of coffee is highlighted, undersc...
19
artículo
Publicado 2012
Enlace
Enlace
The soybean is of great importance in the Brazilian agricultural scenario and both productivity and the area cultivated to each crop are increasing, demanding more speed and quality at harvest. However, losses are recorded in the mechanical harvesting of soybeans, a fundamental stage in the production process of field crops. Looking to quantify these losses was used in this study display a loss, and results were compared with the losses collected manually. Data were collected at Fazenda São Luiz, in the city of Santa Juliana - MG, with a harvester dual-rotor axial, with a platform of 9.14 m. We assessed 40 points in the day and night periods, and the variables: water content of grains, travel speed, plant height, height of first pod, grain yield, losses due to disability at the time of cutting, trail system, cleaning system and total grain losses and losses in the separation of clean gr...
20
artículo
Publicado 2012
Enlace
Enlace
The soybean is of great importance in the Brazilian agricultural scenario and both productivity and the area cultivated to each crop are increasing, demanding more speed and quality at harvest. However, losses are recorded in the mechanical harvesting of soybeans, a fundamental stage in the production process of field crops. Looking to quantify these losses was used in this study display a loss, and results were compared with the losses collected manually. Data were collected at Fazenda São Luiz, in the city of Santa Juliana - MG, with a harvester dual-rotor axial, with a platform of 9.14 m. We assessed 40 points in the day and night periods, and the variables: water content of grains, travel speed, plant height, height of first pod, grain yield, losses due to disability at the time of cutting, trail system, cleaning system and total grain losses and losses in the separation of clean gr...
