1,720,960 research outputs found
Bioremediation treatments for disposal of waste generated of inorganic salts general chemistry laboratory using technical vermiculture
No full textLa biorremediación se define como cualquier proceso que utilice microrganismos, hongos, plantas u organismos vivos para degradar y transformar contaminantes. En este trabajo se analizan los efectos que se producen en el desarrollo y crecimiento de la lombriz roja californiana (eisenia foetida) por consecuencia de la aplicación de residuos de ventas inorgánicas a sustratos generados en los laboratorios químicos generales de la Universidad de Pamplona. Se necesitaron un sustrato de estiércol de caballo mezclado con estiércol de cabro, materia vegetal y melaza, sembraron en ellas 50 individuos de los cuales se estudió su crecimiento durante el desarrollo de la observación incorrecta el efecto que estos residuos pueden traer en la lombriz.</div
El compromiso ambiental de la alta dirección en la adopción de sistemas de gestión ambiental ISO 14001
No full textEl documento parte de una revisión literaria la cual nos ha permitido analizar y argumentar desde la parte de la estructura organizacional, como la alta dirección es clave en el desarrollo del área ambiental de la empresa. Entre los principales conclusiones podemos enunciar como los responsables de diseñar las políticas ambientales no deben utilizar el SGA como un reemplazante de la normatividad y de la regulación ambiental, debe ser utilizado como instrumento que contribuya al desarrollo sostenible desde los tres pilares fundamentales del mismo comunidad , ambiente y economía
Air pollution from construction industry activities in Colombia
No full textThe construction industry produces by its activity a series of environmental alterations that can affect water, soil, fauna, flora and air. Environmental impacts are in turn generated by environmental aspects such as discharges, waste generation and air emissions; consequently, the latter are the ones that generate the greatest risks of pollution, dust, noise, emanations, vibrations being the most characteristic elements of this type of pollution. Air pollution from construction activity occurs in two stages, the first in the execution of the work where there is a high presence of environmental aspects already mentioned and the second when the construction as such is already in operation is a building, house or a road because after construction are propitiated emissions of CO2 (carbon dioxide).Los efectos en la salud de este tipo de contaminación se pueden evidenciar por dermatitis simple por el manejo del polvo de cemento, hasta llegar a una neumonía o intoxicación sistémica por la emanación de solventes de sustancias químicas utilizadas en algunas actividades de la industria de la construcción. Por lo tanto, el objetivo de este artículo es llevar a cabo un análisis y una reflexión sobre cómo este sector económico de la industria en Colombia contribuye al problema de la contaminación del aire en la ejecución de sus procesos produciendo efectos negativos directa o indirectamente y, a menudo, convirtiéndose en una salud pública. problema</div
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
- …
