Revista de Ciencia y Tecnología最新文献_第9页

Evaluadores participantes Evaluadores参与者

Revista de Ciencia y Tecnología Pub Date : 2021-12-21 DOI: 10.18682/cyt.vi21.5512

Equipo Editorial

引用次数: 0

Retrospectiva y prospectiva del Desarrollo de las generaciones de biocombustibles 生物燃料世代发展的回顾与展望

Revista de Ciencia y Tecnología Pub Date : 2021-12-20 DOI: 10.18682/cyt.vi21.2593

Gerald Torrentes Espinoza

{"title":"Retrospectiva y prospectiva del Desarrollo de las generaciones de biocombustibles","authors":"Gerald Torrentes Espinoza","doi":"10.18682/cyt.vi21.2593","DOIUrl":"https://doi.org/10.18682/cyt.vi21.2593","url":null,"abstract":"Los biocombustibles se clasifican de acuerdo con el tipo de materia prima, en biocombustibles de primera, segunda, tercera y cuarta generación. Los biocombustibles de primera generación se producen a partir de cultivos, para transformarlo, mediante el proceso de fermentación. El debate con este tipo de biocombustibles se da debido a que la mayoría de éstos son producidos a partir de cultivos destinados al consumo humano. Los biocombustibles de segunda generación son obtenidos de materias primas no comestibles, como la madera, desechos orgánicos y cultivos específicos, eliminando el principal problema con los biocombustibles de primera generación, ofreciendo una mayor competitividad en el mercado en términos de su costo en relación con los combustibles fósiles existentes. Los biocombustibles de tercera generación usan microorganismos como materia prima, mientras que los biocombustibles de cuarta generación se centran en modificar genéticamente estos microorganismos para lograr una relación alta de hidrógeno a carbono junto con la creación de un extractor de dióxido de carbono artificial para eliminar o minimizar las emisiones de carbono. El objetivo de esta investigación es brindar un amplio panorama de las cuatro generaciones de biocombustibles líquidos, así como los actuales esfuerzos en el desarrollo en este campo. Este trabajo concluye que las metodologías que existen en la actualidad para producir biocombustibles de primera y segunda generación pronto no satisfarán la demanda de biocombustibles y en consecuencia se deben dirigir los recursos y esfuerzos hacia la tercera y cuarta generación, con especial énfasis al desarrollo de la ingeniería genética de las materias primas.","PeriodicalId":21243,"journal":{"name":"Revista de Ciencia y Tecnología","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88343221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

End-to-end platform evaluation for Spanish Handwritten Text Recognition 西班牙语手写文本识别的端到端平台评估

Revista de Ciencia y Tecnología Pub Date : 2021-12-20 DOI: 10.18682/cyt.vi21.4327

Eduardo Xamena, Héctor Emanuel Barboza, Carlos Ismael Orozco

引用次数: 0

Transformación digital para una gestión de proyectos eficiente a distancia 高效远程项目管理的数字化转型

Revista de Ciencia y Tecnología Pub Date : 2021-12-20 DOI: 10.18682/cyt.vi21.4540

Rudy Bezir, Fernando Pérez, Anibal Luyo García

{"title":"Transformación digital para una gestión de proyectos eficiente a distancia","authors":"Rudy Bezir, Fernando Pérez, Anibal Luyo García","doi":"10.18682/cyt.vi21.4540","DOIUrl":"https://doi.org/10.18682/cyt.vi21.4540","url":null,"abstract":"La crisis mundial obligó a más de la mitad de la humanidad a un aislamiento social, provocando que la transformación digital (TD) y la Industrialización 4.0 se vean aceleradas en las organizaciones. Hemos llegado a un punto de inflexión ya que este proceso continuará más allá del fin del confinamiento.En esta presentación revisaremos cómo materializar las buenas prácticas digitales de gestión de proyectos para superar los retos del cambiante ecosistema, optimizando nuestro manejo del capital humano a distancia de manera efectiva.En una primera parte, analizaremos, desde una perspectiva teórica, cómo la transformación digital ayuda en el manejo de la triple restricción en situaciones de distanciamiento y optimiza el esfuerzo necesario en los grupos de procesos para obtener una organización eficiente.En una segunda etapa veremos los casos de la empresa ARPL y de la institución SENACE. Por un lado, se explorará cómo esta empresa de ingeniería de la cementera UNACEM controla las horas presupuestadas; por otro lado, veremos cómo esta institución pública, adscrita al Ministerio del Ambiente de Perú, cumple con los plazos establecidos por la regulación nacional sin exceder su capacidad de recursos.","PeriodicalId":21243,"journal":{"name":"Revista de Ciencia y Tecnología","volume":"92 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83079370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploring parallel formal verification of BIG-DATA systems 探索大数据系统的并行形式验证

Revista de Ciencia y Tecnología Pub Date : 2021-12-20 DOI: 10.18682/cyt.vi21.4549

Fernando Asteasuain, Luciana Rodriguez Caldeira

引用次数: 0

Impact of the packaging of plain soymilk on the intention to purchase of the consumer 普通豆浆包装对消费者购买意愿的影响

Revista de Ciencia y Tecnología Pub Date : 2021-12-01 DOI: 10.36995/j.recyt.2021.36.006

Pedro Augusto dos Santos Baleroni, Marta de Toledo Benassi, M. Corso, Marcela Moreira Terhaag

{"title":"Impact of the packaging of plain soymilk on the intention to purchase of the consumer","authors":"Pedro Augusto dos Santos Baleroni, Marta de Toledo Benassi, M. Corso, Marcela Moreira Terhaag","doi":"10.36995/j.recyt.2021.36.006","DOIUrl":"https://doi.org/10.36995/j.recyt.2021.36.006","url":null,"abstract":"The objective of this work was to evaluate the intention to purchase plain soymilk by correlating it with packaging characteristics through the conjoint analysis. Survey of attributes occurred by focus group (41 participants) and five samples of Brazilian original soymilk. Main attributes that interfered in the purchase decision: brand, presence of nutritional appeal, type of illustration of glass containing beverage and background color. Attributes were combined to generate eight packaging proposals, evaluated by 86 participants. SAS was used for data analysis, 85 of which were consistent. Participants were grouped by similarities/dissimilarities in three groups: G1 (48 participants), G2 (31) and G3 (6). G1 preferred packaging containing nutritional appeal and light background, being influenced by the brand. G2 opted for packaging containing nutritional appeal, lesser-known brand and filled glass. G3 preferred the presence of nutritional appeal, lesser known brand, full glass and dark background. Presence of nutritional appeal is the factor that most impacts the purchase decision, but the brand, type of glass illustration and background color are relevant. Packaging with the presence of nutritional appeal, glass with full filling and clear background is more likely to be of interest to consumers.","PeriodicalId":21243,"journal":{"name":"Revista de Ciencia y Tecnología","volume":"45 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85464935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Prevalence of thyroid dysfunction and its relationship with the lipid profile in patients in hospital from Encarnación 住院患者甲状腺功能障碍的患病率及其与血脂的关系:Encarnación

Revista de Ciencia y Tecnología Pub Date : 2021-12-01 DOI: 10.36995/j.recyt.2021.36.009

Edith N. Genéz Yeza, Claudia N. Mir, Rocío M. Ares, W. Pedrozo, G. Bonneau

{"title":"Prevalence of thyroid dysfunction and its relationship with the lipid profile in patients in hospital from Encarnación","authors":"Edith N. Genéz Yeza, Claudia N. Mir, Rocío M. Ares, W. Pedrozo, G. Bonneau","doi":"10.36995/j.recyt.2021.36.009","DOIUrl":"https://doi.org/10.36995/j.recyt.2021.36.009","url":null,"abstract":"Thyroid dysfunctions are a cause of morbidity and disability worldwide. Little information has been found on the prevalence of thyroid dysfunctions in Paraguay, so this study provides data on their presentation. The objective was to determine the prevalence of thyroid dysfunction and its relationship with the lipid profile in adult outpatients attending the laboratory of the Regional Hospital of Encarnación, during January-November 2016.\u0000A descriptive cross-sectional study was performed, based on the review of 250 medical records, 84 % of whom were women; the median age was 39 (35-47) years in men and 36 \u0000(32-43) years in women. Thirty percent were hypothyroid and 3 % hyperthyroid; the most frequent thyroid dysfunction was subclinical hypothyroidism with 19 %. Highly significant differences were found for total cholesterol, LDL, VLDL and thyrotrophin between hypothyroid vs euthyroid, with the former having more atherogenic profiles. Logistic regression was used to assess the contribution of dyslipidaemia, finding a significant association with hypothyroidism (OR=3.24(1.81-5.81), p<0.001). Thirty-three percent of this population sample, 1 in 3 individuals, had thyroid dysfunction. These could be managed appropriately and further complications could be avoided.","PeriodicalId":21243,"journal":{"name":"Revista de Ciencia y Tecnología","volume":"48 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89554958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Chemical constituents and bactericidal and fungicide potential of the essential oil of Pimenta dioica Lindl against pathogenic microorganisms 洋红精油的化学成分及其对病原微生物的杀菌和杀真菌活性

Revista de Ciencia y Tecnología Pub Date : 2021-12-01 DOI: 10.36995/j.recyt.2021.36.010

G. O. Everton, A. Pereira, N. S. C. Mafra, P. S. Santos Júnior, T. G. Martins, P. V. S. Rosa, P. R. B. Gomes, N. E. Mendes Filho, V. E. Mouchrek Filho

引用次数: 1

Longitudinal scattering coefficient obtained by hydroacoustic measurement and by conservative tracer 由水声测量和保守示踪剂得到的纵向散射系数

Revista de Ciencia y Tecnología Pub Date : 2021-12-01 DOI: 10.36995/j.recyt.2021.36.007

Ana F. Nadal, J. M. Díaz Lozada, Gonzalo P. Barbero Medina, Karen M. Moro, M. Melchiorre, N. Larrosa

{"title":"Longitudinal scattering coefficient obtained by hydroacoustic measurement and by conservative tracer","authors":"Ana F. Nadal, J. M. Díaz Lozada, Gonzalo P. Barbero Medina, Karen M. Moro, M. Melchiorre, N. Larrosa","doi":"10.36995/j.recyt.2021.36.007","DOIUrl":"https://doi.org/10.36995/j.recyt.2021.36.007","url":null,"abstract":"The objective of the present work was to determine the value of the longitudinal dispersion coefficient (DL) of the Chicamtoltina stream (Alta Gracia) by means of two different techniques, in order to compare the values obtained. The first technique consisted of applying a developed formula that includes a detailed description of hydrodynamic parameters obtained by gauging with a hydroacoustic instrument, while the second technique consisted of injecting a conservative tracer, using the same approach as the non-ideal chemical reactor theory of flow with dispersion. This work was carried out at low flow conditions (dry period) and at high flow conditions (wet period). It was found that, either for high flow or low flow, the values of the dispersion coefficient obtained by both techniques have good agreement, fitting better in the dry period than in the wet period. Due to the fact that frequent gauging campaigns are carried out in this stream, it is concluded that with similar flow characteristics and morphology of the section, the gauging data can be used to determine the DL coefficient, in order to incorporate reliable data that can be applied to pollutant transport models.","PeriodicalId":21243,"journal":{"name":"Revista de Ciencia y Tecnología","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84967642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

The construction of the curricular design of the University Professor of Biology at the National University of Misiones and the formative pathway of Education for Health and the Environment 米西奥内斯国立大学生物学教授课程设计的建构与健康与环境教育的形成路径

Revista de Ciencia y Tecnología Pub Date : 2021-12-01 DOI: 10.36995/j.recyt.2021.36.001

P. M. Morawicki, A. G. Pedrini, Alicia Tetzlaff

引用次数: 0