Los superconductores

La enzima conversora de angiotensina I (ECA) es una dipeptidil carboxipeptidasa que cataliza la conversión de angiotensina I en el octapéptido vasopresor angiotensina II e inactiva el nonapéptido vasodilatador bradiquinina.El reconocimiento del papel de esta enzima en la regulación de la presión sanguínea ha estimulado el interés en encontrar inhibidores de ECA para su uso como agentes antihipertensivos. En esta memoria se describe un método en dos pasos de cromatografía de afinidad para purificar ECA de pulmón de cerdo utilizando para ello Concanavalina A Sepharosa 4B y...

Making knowledge about evolution available to everyone, this simple and entertaining book offers answers to the most frequently asked questions. Throughout the text, the reader is reminded of the importance of understanding evolutionary processes in order to approach present day human behavior, including social conduct, as well as the difficulty of trying to decipher the nature of modern human beings without going back to their zoological origin. Divided into two sections, the first one builds the foundation for the latter, which explains the evolution of life, beginning at the physical...

El Ecuador cuenta con 3118 especies de plantas medicinales, algunas de ellas han constituido la base para iniciar investigaciones formales con aplicabilidad en la etnofarmacología. Presentamos 30 especies distribuidas en todo el Ecuador y que han sido utilizadas ancestralmente por la medicina tradicional. Además incluye una guía de ilustraciones botánicas y una navegación a través de mapas interactivos.

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute...