ISSN 0187-893X       ISSNE 1870-8404
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Guide authors of the current issue Volumen XXVII, Número 4, October de 2016 Volumen XXVII, Número 3, July de 2016 Volumen XXVII, Número 2, April de 2016 Volumen XXVII, Número 1, January de 2016
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Volume XXVII

Number 4






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Contents No.4 2016




José Antonio Chamizo   27 - 239


Henry Enfi eld Roscoe

Jaime Wisniak   240 - 248
Henry Enfield Roscoe (1833---1915), together with Robert Bunsen, his mentor, carried on fundamental research in photochemistry, determining its laws and quantitative effects. His most important studies were on the chemistry of vanadium, uranium, tungsten, and molybdenum, their oxides and oxychlorides, carrying on, for the first time, their synthesis and separation. He also did important studies on public heath. His academic activities transformed Owens College (Victoria University) into the leading chemistry school in Britain.


InnovationReproducing an innovation environment in the classroom. An strategy to promotecreativity in Chemical Engineering education

Laura Tolosa, Ronald Márquez, César Izaguirre, Leonardo Rennola, Johnny Bullón, Beatriz Sandia   249 - 256
The teaching-learning process in traditional college education uses strategies thatplace the student as a recipient of information transmitted by the teacher, which is conceptua-lized as knowledge. The reality in which we live requires generating training solutions to meetthe needs of individuals in the development of skills or know-how to respond to society, to formindividuals capable of learning to learn and learning to transfer, prepared to continually seekknowledge and able to create and innovate. In this paper, the results of the implementationof the strategy ‘Reproducing an Innovation Environment in the Classroom’ (RAIS) in courses ofthe Chemical Engineering curriculum, in Universidad de Los Andes, Mérida-Venezuela are pre-sented. This is a strategy of teaching, learning and assessment in which the student is aco-participant in the construction and generation of knowledge, developing the skills proposedin the course by the execution of a product. RAIS strategy was applied in the courses of PhysicalChemistry for Chemical Engineers, Industrial Chemistry I and Laboratory of Industrial Chemistry,where students obtained a finished product using the know-how in the area of each course. Thisstrategy led to an increase in motivation over other courses based on lectures, and the deve-lopment of the ability to function and find solutions in multidisciplinary groups workplaces. Itis important to note that more than 80% of students said the RAIS strategy contributes to theirpersonal development and training for applied research.


Wikis in Moodle: The students and teachers gaze

Ivana Núñez, Marina Míguez Palermo, Gustavo Seoane   257 - 263
The use of ICT in education does not imply innovation per se, since these technologies can be used to maintain immutable educational models, and therefore the adequacy and scope of the incorporation must be analyzed. In order to provide elements for the reflection on the possibilities of incorporating tools to support teaching and learning processes, the results from an investigation carried out within the Department of Organic Chemistry of the Faculty of Chemistry, Universidad de la República, are analyzed. This paper discusses the use of wikies as a tool for the Organic Chemistry Laboratory course corresponding to the third year of all careers offered by the Faculty of Chemistry (Universidad de la República) through the students’ reports, the platform registers and the opinions expressed by the course participants.


Integrated experiments: Use of sensors in the electroplating plants

Juan Camus, Ramón Lagos   264 - 268
Trying to integrate knowledge sometimes is very difficult in the experimental sciences, however, the electroplating industry gives us a great opportunity because it allows integrating the knowledge of electrochemistry with the analytical chemistry and hence the use of instruments of varied sophistication in the determination of analytes. The colours of different electrolytes in the bath of electrolysis, in the cited plants, allow using the colorimetricsensor to help plant operator to quantify the degree of electrodeposition of metal of the coloredelectrolyte. The nickel baths are of extraordinary importance in a electroplating plant, orthose requiring to deposit hard copper for the printing roller or small workshops of artisans orjewelers, because nickel coating allows deposit on it, other metals as gold or silver, of greatervalue, improving the aesthetics value of the obtained piece part and raising their resistanceto corrosion and wear. The plant experienced operator, is capable of determining the degreeof depletion of electrolyte observing the intensity of the colour to be sent to quantitativeanalysis, with the aim of adding exactly the amount of nickel salts that need the bath. Usingthe colorimetric sensor allows this operation efficiently enough, allowing solving quickly, in-situ,the analytical problem.


Modified Newman projections: A new representation of the Newman notations to convey conformational properties

M. Hossein Khalilian, Hormoz Khosravi, Saber Mirzaei   269 - 277
Conformational analysis is one of the significant subjects in the organic chemistry curriculum. Since this subject may be intricate for some beginner students, a concrete model (an activity) has been devised to explain the conformational concepts with an intriguing and simple method. This model is based on geometric shapes (particularly triangles) in which the revolution of each shape on its axis at the centroid (around its vertices and edges) simulates the rotation about a single bond in a molecule. If we take edges as lower energy (more stable) and vertices as higher energy (less stable), this revolution gives a graph almost identical to the actual conformational energy diagram of that molecule. These shapes can also incorporate into the Newman projections to form a tangible representation of these notations. Most of the participants, who got familiar with these newly modified Newman projections, found them beneficial in enhancing the students’ perception of the basic conformational properties of the molecules. Furthermore, searching for a relevant shape to match the right molecule serves as an activity that in addition to being enjoyable can encourage the students to get engaged with the topic. This model is applicable to a large variety of molecules such as the hydrocarbon, aldehyde and ketone molecules, which can also generalize to more functional groups and compounds.


Achievements and perspectives of Theoretical Chemistry

Alberto Vela Amieva   278 - 285
A review of the methods developed within Theoretical Chemistry to study matter in many spatial and temporal scales is presented. The scientific career of a well known theoretical chemist is used to show how the astonishing advances that have been achieved in four decades in the development of theories, codes (algorithms) and computer technology allow nowadays the reliable study of the electronic structure of systems whose sizes were unmanageable forty years ago. It is emphasized that the central difficulty in studying Chemistry from a theoretical scalesperspective is that, in every scale, one deals with a many-body problem whose solution andcomprehension are still an unsolved and fascinating scientific challenge.


Nanomedicine and drug delivery systems: the (r)evolution of cancer therapy?

Israel González-Méndez, Karina Aguado-Castrejón, Yareli Rojas-Aguirre   286 - 291
The term nanotechnology refers to a number of disciplines intended to study materials and structures at the nanoscale. One of the most important areas of nanotechnology is nanomedicine, which is focused in great extent on the design and development of drug delivery systems. These drug delivery platforms can display very sophisticated properties and unique features, and are considered as the revolution of the conventional chemotherapies, specifically those to treat cancer. In this work we review the concept of nanomedicine and its application on the design of nanocarriers of antineoplastic drugs and highlight some aspects that have to be addressed to translate the drug delivery platforms in to devices with possibilities to reach clinical trials.


Production of radiopharmaceuticals for positron emission tomography (PET) and its application in the diagnosis of various diseases

Adolfo Obaya Valdivia, Jesús López López, Oyuki Camacho González, Yolanda Marina Vargas   292 - 299
The radioactivity is more known for adverse effects by the explosion of atomic bombs in World War II, but also has features beneficial to health care since it serves for the early diagnosis of diseases to your treatment. This paper presents, from a perspective of chemical education, the fundamental concepts of the Emission of Positron Tomography (PET). Also explains the process of production of radiopharmaceuticals for PET, in particular18F. Also,different types of radiopharmaceuticals used for diagnosis of oncological, neurological andcardiac diseases are discussed. The use and clinical applications of this method of Imagingis already a reality in Mexico since 2005. It is expected students and teachers of the areachemical biological sciences achieve a better understanding and an overview of the scope andapplications that this technique can have.





Educación Química authors 2016

   301 - 302


Educación Química referees

   303 - 304