发布求助
文献互助 智能选刊 最新文献

Educacion Quimica最新文献

筛选
英文 中文
Rol de la Química Orgánica en los procesos de conversión de hidrocarburos 有机化学在碳氢化合物转化过程中的作用
Educacion Quimica Pub Date : 2015-10-01 DOI: 10.1016/j.eq.2015.08.001
José Gregorio Alvarado , José Gregorio Delgado Linares , Héctor Rafael Medina
{"title":"Rol de la Química Orgánica en los procesos de conversión de hidrocarburos","authors":"José Gregorio Alvarado ,&nbsp;José Gregorio Delgado Linares ,&nbsp;Héctor Rafael Medina","doi":"10.1016/j.eq.2015.08.001","DOIUrl":"10.1016/j.eq.2015.08.001","url":null,"abstract":"<div><p>Complex crude oil refining processes involve several organic reactions whose mechanisms, kinetic and thermodynamic phenomena determine the product distributions, therefore, these reactions constitute an important reference for setting operating conditions of many processes in the industry. Under the integral vision of the chemical engineering teaching, 3 hydrocarbon conversion processes are analyzed (combustion, alkylation and cracking) taking into account the organic reactions involved in each process and its influence to determine the type and quality of the products obtained.</p></div>","PeriodicalId":39011,"journal":{"name":"Educacion Quimica","volume":"26 4","pages":"Pages 288-298"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.eq.2015.08.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130178224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
La amistad es lluvia de flores preciosas 友谊是美丽的花雨
Educacion Quimica Pub Date : 2015-10-01 DOI: 10.1016/j.eq.2015.08.002
José Antonio Chamizo Guerrero
{"title":"La amistad es lluvia de flores preciosas","authors":"José Antonio Chamizo Guerrero","doi":"10.1016/j.eq.2015.08.002","DOIUrl":"https://doi.org/10.1016/j.eq.2015.08.002","url":null,"abstract":"","PeriodicalId":39011,"journal":{"name":"Educacion Quimica","volume":"26 4","pages":"Pages 261-262"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.eq.2015.08.002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91744681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Criterios para el diseño de unidades didácticas contextualizadas: aplicación al aprendizaje de un modelo teórico para la estructura atómica 情境化教学单元设计标准:原子结构理论模型在学习中的应用
Educacion Quimica Pub Date : 2015-10-01 DOI: 10.1016/j.eq.2015.06.001
Iván Marchán-Carvajal , Neus Sanmartí
{"title":"Criterios para el diseño de unidades didácticas contextualizadas: aplicación al aprendizaje de un modelo teórico para la estructura atómica","authors":"Iván Marchán-Carvajal ,&nbsp;Neus Sanmartí","doi":"10.1016/j.eq.2015.06.001","DOIUrl":"10.1016/j.eq.2015.06.001","url":null,"abstract":"<div><p>This article reflects on the notion of context and its importance in the teaching and learning of science in general and chemistry in particular. A brief review of the various ways of understanding science education in context and problems associated with its application in the classroom is done. From this analysis a proposal of criteria for the development of contextualized learning units is presented, and its goal is to construct a model with the key ideas to be applied. As an example of this, the design of a teaching unit is shown for an atomic model that takes into account a possible scenario of progression in their learning</p></div>","PeriodicalId":39011,"journal":{"name":"Educacion Quimica","volume":"26 4","pages":"Pages 267-274"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.eq.2015.06.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122005364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 18
Construcción de un sistema de bajo costo para el uso y evaluación de sensores semiconductores para gases 建立低成本系统，用于气体半导体传感器的使用和评估
Educacion Quimica Pub Date : 2015-10-01 DOI: 10.1016/j.eq.2015.07.001
Alejandro Delgado-Castro, Omar Rojas-Bolaños
{"title":"Construcción de un sistema de bajo costo para el uso y evaluación de sensores semiconductores para gases","authors":"Alejandro Delgado-Castro,&nbsp;Omar Rojas-Bolaños","doi":"10.1016/j.eq.2015.07.001","DOIUrl":"10.1016/j.eq.2015.07.001","url":null,"abstract":"<div><p>Tin dioxide semiconductor gas sensors represent an alternative for gas detection in air because its simplicity and low cost. This coupled with the need for a computer based interface, makes them ideal for developing multidisciplinary projects with students from areas such as Chemistry, Electrical Engineering, Electronics and Computer Science. This document shows the construction of a low cost system for evaluation of semiconductor gas sensors. This system consists of an exposure chamber, an electronic interface to manipulate the sensor and to transfer data to the computer and a methane generator for use in the laboratory.</p></div>","PeriodicalId":39011,"journal":{"name":"Educacion Quimica","volume":"26 4","pages":"Pages 299-306"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.eq.2015.07.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133247654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Proposta de preparação e caracterização de ésteres: um experimento de análise orgânica na graduação 酯类的制备与表征建议:本科有机分析实验
Educacion Quimica Pub Date : 2015-10-01 DOI: 10.1016/j.eq.2015.07.003
Phelipe Matheus Moraes Calvalcante , Renato Luiz da Silva , Jucleiton José Rufino de Freitas , Juliano Carlo Rufino de Freitas , João Rufino de Freitas Filho
{"title":"Proposta de preparação e caracterização de ésteres: um experimento de análise orgânica na graduação","authors":"Phelipe Matheus Moraes Calvalcante ,&nbsp;Renato Luiz da Silva ,&nbsp;Jucleiton José Rufino de Freitas ,&nbsp;Juliano Carlo Rufino de Freitas ,&nbsp;João Rufino de Freitas Filho","doi":"10.1016/j.eq.2015.07.003","DOIUrl":"10.1016/j.eq.2015.07.003","url":null,"abstract":"<div><p>Esters consist in one of the classes of chemical substances widely found in nature. Some esters of low molecular weight tend to have a pleasant flavor and therefore are widely used by food and drinks industries. The esters can be synthesized by the reaction between a carboxylate anion and an alkyl halide, or by Fischer esterification reaction. Industrially, this last reaction is one of the main procedures for the esters synthesis, and according this work, a simple experiment about this specific obtaining method is described and proposed for undergraduate discipline of organic analysis. The preparation of alkyl levulinate and lactate, from levulinic acid and/or lactic acid, is carried out in laboratory, easily, requiring three periods of four hours and is useful for chemistry teaching.</p></div>","PeriodicalId":39011,"journal":{"name":"Educacion Quimica","volume":"26 4","pages":"Pages 319-329"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.eq.2015.07.003","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131933334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Charles Hatchett: The discoverer of niobium 查尔斯·哈切特:铌的发现者
Educacion Quimica Pub Date : 2015-10-01 DOI: 10.1016/j.eq.2015.07.004
Jaime Wisniak
{"title":"Charles Hatchett: The discoverer of niobium","authors":"Jaime Wisniak","doi":"10.1016/j.eq.2015.07.004","DOIUrl":"10.1016/j.eq.2015.07.004","url":null,"abstract":"<div><p>To Charles Hatchett (1765–1847), a self-educated scientist and first class analytical chemist, we owe the discovery of niobium, the analysis of a series of important minerals and animal substances such as shells, bones, dental enamel, a detailed study of bitumens, the separation of an artificial tanning material from mineral and animal sources.</p></div>","PeriodicalId":39011,"journal":{"name":"Educacion Quimica","volume":"26 4","pages":"Pages 346-355"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.eq.2015.07.004","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132417675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Uma proposta de aula experimental utilizando mesocarpo de babaçu (Orbignya speciosa) na remoção do azul de metileno de soluções aquosas 利用巴巴苏中果皮(Orbignya speciosa)从水溶液中去除亚甲基蓝的实验课程的建议
Educacion Quimica Pub Date : 2015-10-01 DOI: 10.1016/j.eq.2014.12.001
Oswaldo Palma Lopes Sobrinho , Lana Fernanda Borges da Silva , Álvaro Itaúna Schalcher Pereira , Erika de Kássia Pereira Cantanhede , Maria da Assunção Silva Carlos , Joselson Rodrigues da Silva , Laurinda Fernanda Saldanha Siqueira
{"title":"Uma proposta de aula experimental utilizando mesocarpo de babaçu (Orbignya speciosa) na remoção do azul de metileno de soluções aquosas","authors":"Oswaldo Palma Lopes Sobrinho ,&nbsp;Lana Fernanda Borges da Silva ,&nbsp;Álvaro Itaúna Schalcher Pereira ,&nbsp;Erika de Kássia Pereira Cantanhede ,&nbsp;Maria da Assunção Silva Carlos ,&nbsp;Joselson Rodrigues da Silva ,&nbsp;Laurinda Fernanda Saldanha Siqueira","doi":"10.1016/j.eq.2014.12.001","DOIUrl":"10.1016/j.eq.2014.12.001","url":null,"abstract":"<div><p>The development of ecological awareness in different layers and sectors of society in Latin America involving Education, which may contribute to the formation of a creative economy, related to experimental practices with concern for environmental issues. The objective of this research was to develop an experimental low cost and easy implementation which was used biomass babassu (babassu mesocarp) as biosorbent in the removal of methylene blue dye from aqueous solutions. The babassu mesocarp showed good sorption capacity were used since small amounts of biosorbents in the removal of dye. It was found that there is a proportional relation between the amount of the biosorbent and dye concentration, at least in dilute solutions. We could realize the importance of washing step during the preparation of biosorbent. It is at this stage that are removed water soluble substances which can enhance the effluents of organic matter. The experiment also promote the concept of environmental sustainability and reuse of waste, as well as enrich the practical and settings chemical sorption, bioremediation, sorbent, biomass, intermolecular forces, solubility, polarity and biosorbent. Also, be keen curiosity of students, awakening them to the importance of research in chemistry</p></div>","PeriodicalId":39011,"journal":{"name":"Educacion Quimica","volume":"26 4","pages":"Pages 314-318"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.eq.2014.12.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115453344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Del modelo científico del flogisto al modelo de la oxidación. El concepto de frontera 从燃素科学模型到氧化模型。边界的概念
Educacion Quimica Pub Date : 2015-07-01 DOI: 10.1016/j.eq.2015.03.001
Rómulo Gallego Badillo , Royman Pérez Miranda , Adriana Patricia Gallego Torres
{"title":"Del modelo científico del flogisto al modelo de la oxidación. El concepto de frontera","authors":"Rómulo Gallego Badillo ,&nbsp;Royman Pérez Miranda ,&nbsp;Adriana Patricia Gallego Torres","doi":"10.1016/j.eq.2015.03.001","DOIUrl":"https://doi.org/10.1016/j.eq.2015.03.001","url":null,"abstract":"<div><p>This article presents the concept of geographical and cultural border as an analogy to construct a different perspective on a historical fact and its main contribution to the origins of Chemistry as one of the sciences of nature. It is thought up on the origin of the model of the Phlogiston and of the reasons English and German chemists had to admit and accept it during the 18th century. It is also demonstrated that the G. E. Stahl proposal was a conceptual and methodological construction, which cannot be abandoned by the simple “entelequia” for the oxygen. An analysis of A. L. Lavoisier work was done in order to discuss the category of “scientific Revolution” of T. S. Kuhn, and conclude, that this step cannot be assumed from the above mentioned perspective.</p></div>","PeriodicalId":39011,"journal":{"name":"Educacion Quimica","volume":"26 3","pages":"Pages 242-249"},"PeriodicalIF":0.0,"publicationDate":"2015-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.eq.2015.03.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90003204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
El platino: contribuciones socio-históricas y científicas siglos xix y xx. Segunda parte 铂:19和20世纪的社会历史和科学贡献。第二部分
Educacion Quimica Pub Date : 2015-07-01 DOI: 10.1016/j.eq.2015.05.008
Andrea Aristizábal Fúquene
{"title":"El platino: contribuciones socio-históricas y científicas siglos xix y xx. Segunda parte","authors":"Andrea Aristizábal Fúquene","doi":"10.1016/j.eq.2015.05.008","DOIUrl":"10.1016/j.eq.2015.05.008","url":null,"abstract":"<div><p>This second part of the paper describes the techniques that were developed after platinum treatment, its associated elements, applications and its addition to the periodic table. The discussion is around how the scientific research of a particular chemical element involves social, economic and political factors applicable to other metals as well.</p></div>","PeriodicalId":39011,"journal":{"name":"Educacion Quimica","volume":"26 3","pages":"Pages 233-241"},"PeriodicalIF":0.0,"publicationDate":"2015-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.eq.2015.05.008","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126183388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
La controversia científica, un fundamento conceptual y metodológico en la formación inicial de docentes: una propuesta de enseñanza para la apropiación de habilidades argumentativas 科学争议，初级教师培训的概念和方法基础:挪用辩论技巧的教学建议
Educacion Quimica Pub Date : 2015-07-01 DOI: 10.1016/j.eq.2015.05.007
Teo Pabon , Liz Muñoz , Jordi Vallverdú
{"title":"La controversia científica, un fundamento conceptual y metodológico en la formación inicial de docentes: una propuesta de enseñanza para la apropiación de habilidades argumentativas","authors":"Teo Pabon ,&nbsp;Liz Muñoz ,&nbsp;Jordi Vallverdú","doi":"10.1016/j.eq.2015.05.007","DOIUrl":"10.1016/j.eq.2015.05.007","url":null,"abstract":"<div><p>A conceptual and methodological proposal arises here based on scientific controversy, as an option for student teachers to develop ownership and argumentative skills. This assumes appropriation of school science knowledge as constructor evidence to develop scientific controversies in the classroom enhancing argumentation, conviction and commitment, which are key to improving teaching and educational quality in school.</p></div>","PeriodicalId":39011,"journal":{"name":"Educacion Quimica","volume":"26 3","pages":"Pages 224-232"},"PeriodicalIF":0.0,"publicationDate":"2015-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.eq.2015.05.007","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115961277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
首页 上一页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信