Diseno y seleccion de un sistema de vacio para los laboratorios de quimica de la u.t.p PDF Download
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Author: Eugenio Franco Delgado
Publisher:
ISBN:
Category :
Languages : es
Pages : 108
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Author: Eugenio Franco Delgado
Publisher:
ISBN:
Category :
Languages : es
Pages : 108
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Author: Alvaro Hernandez Roman
Publisher:
ISBN:
Category :
Languages : es
Pages :
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Author: Leonardo Cardona Cruz
Publisher:
ISBN:
Category :
Languages : es
Pages :
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Author: Jenny Armely Rodríguez Quiñones
Publisher:
ISBN:
Category :
Languages : es
Pages : 0
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Resumen: En el presente trabajo de grado, se diseñó y construyó una columna de extracción líquido-líquido, la cual tiene como finalidad, el afianzamiento del conocimiento adquirido por parte de los estudiantes, visualizando esté tipo de operaciones de una manera mucho más amigable. El equipo está diseñado para que se realicen prácticas con diferentes solventes, en el caso nuestro trabajamos con un sistema ternario de agua, etanol y una mezcla de aceite vegetal y de ricino en porcentaje peso-peso (40:60), por consiguiente al no existir en la literatura diagramas ternarios específicos para dicho sistema, se procedió a la elaboración y obtención de la curva binodal y las respectivas líneas de reparto. Este proceso se llevó a cabo determinando las densidades y respectivos índices de refracción, para mezclas en diferentes proporciones en cada uno de los componentes del sistema ternario y en cada fase de las mezclas. Los resultados obtenidos para la construcción del diagrama ternario, dejan ver la poca afinidad entre la mezcla de aceites y el agua y la tendencia del etanol por solubilizando a la mezcla de aceites.
Author: Daniella Tilbury
Publisher: IUCN
ISBN: 9782831708232
Category : Business & Economics
Languages : en
Pages : 152
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The book is based on the exchange of professional experiences which featured in an IUCN CEC workshop in August 2002. Practitioners from around the world shared their models of good practice and explored the challenges involved in engaging people in sustainability. The difficulties facing practitioners vary between country and context but some challenges are universal: A lack of clarity in communicating what is meant by sustainable development; An ambition to educate everyone to bring about a global citizenship; Social, organisational or institutional factors constrain change to sustainable development, yet there is an emphasis on formal education, and community educators do not receive the same support; A lack of balance in addressing the integration of environmental, social and economic dimensions leading to an interpretation that ESD is mainly about environment and conservation issues; New learning (rather than teaching) approaches are called for to promote more debate in society. Yet, few are trained or experienced in these new approaches. Practitioners need support to explore new ways of promoting learning. [Foreword, ed].
Author: Dennis Coon
Publisher: Thomson Learning
ISBN: 9780534576738
Category : Education
Languages : en
Pages : 694
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Author: Francesco di Castri
Publisher: Springer Science & Business Media
ISBN: 3642655203
Category : Science
Languages : en
Pages : 410
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No other disjunct pieces of land present such striking similarities as the widely sepa 1 rated regions with a mediterranean type of climate, that is, the territories fringing the Mediterranean Sea, California, Central Chile and the southernmost strips of South Mrica and Australia. Similarities are not confined to climatic trends, but are also reflected in the physiognomy ofthe vegetation, in land use patterns and frequently in the general appearance of the landscape. The very close similarities in agricultural practices and sometimes also in rural settlements are dependent on the climatic and edaphic analogies, as well as on a certain commonality in qdtural history. This is certainly true for the Mediterranean Sea basin which in many ways represents a sort of ecological-cultural unit; this is also valid for CaUfornia and Chile, which were both settled by Spaniards and which showed periods of vigorous commercial and cultural interchanges as during the California gold rush. One other general feature is the massive interchange of cultivated and weed species of plants that has occurred between the five areas of the world that have a mediterranean-type climate, with the Mediterranean basin region itself as a major source. In spite of their limited territorial extension, probably no other parts of the world have played a more fundamental role in the history of mankind. Phoenician, Etruscan, Hellenic, Jewish, Roman, Christian andArab civilizations, among others,haveshapedmanyofman's present attitudes, including his position and perception vis-a-vis nature.
Author: Dennis Coon
Publisher:
ISBN:
Category : Psychology
Languages : en
Pages : 714
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Author: Robert James Waller
Publisher: Random House
ISBN: 1448183146
Category : Fiction
Languages : en
Pages : 194
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Book Description
Fall in love with one of the bestselling novels of all time -- the legendary love story that became a beloved film starring Clint Eastwood and Meryl Streep. If you've ever experienced the one true love of your life, a love that for some reason could never be, you will understand why readers all over the world are so moved by this small, unknown first novel that they became a publishing phenomenon and #1 bestseller. The story of Robert Kincaid, the photographer and free spirit searching for the covered bridges of Madison County, and Francesca Johnson, the farm wife waiting for the fulfillment of a girlhood dream, The Bridges of Madison County gives voice to the longings of men and women everywhere -- and shows us what it is to love and be loved so intensely that life is never the same again.
Author: Kamil Kahveci
Publisher: Nova Science Pub Incorporated
ISBN: 9781604562316
Category : Cooking
Languages : en
Pages : 205
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Book Description
Drying has been one of the most important techniques used in food preservation for long years. The drying process has to be performed considering energy economy and the quality standards for the product. Therefore, it is of great importance to understand the physical phenomena taking place in the drying processes which is the subject of this book.
