Author: K. Miralles VillaPublisher:
ISBN:
Category :
Languages : es
Pages : 16
Book Description
Ciencias naturales, 1o. B.U.P.
Author: K. Miralles VillaBulletin
Author: Geographers
Author: Hayden LorimerPublisher: Bloomsbury Publishing
ISBN: 1441170596
Category : History
Languages : en
Pages : 225
Book Description
The thirtieth volume of Geographers: Biobibliographical Studies adds significantly to the corpus of scholarship on geography's multiple histories and biographies with nine essays on figures from Britain, France, the USA and Spain. Each was distinguished in his or her own scholarship and made distinctive contributions in specific fields -- as historical, political or population geographers, and, in one case, as a hydrologist-geomorphologist. The subjects also shared a commitment to the educational benefits of geography and of geographical research that was rooted in a vision of geography as socially illuminating and individually life-changing. Here is further rich testimony of the importance of geographers' lives to the lived experience of geography in practice.
Natural Arsenic in Groundwaters of Latin America
Author: Jochen BundschuhPublisher: CRC Press
ISBN: 0415407710
Category : Science
Languages : en
Pages : 784
Book Description
Groundwater resources naturally contain high levels of arsenic in many parts of the world. Over the last two decades, the As-containing groundwater in South-East Asia has received much attention, but the situation is just as crucial in Latin America, where the number of studies is still relatively low, and the extent and severity of As-exposure in the populations has yet to be fully evaluated. This book aims to promote knowledge of the occurrence and genesis of As-rich groundwater in Latin America. It deals with constraints on the mobility of As in groundwater, As-uptake from soil and water by plants, As-propagation through the food chain, human health impacts, and As-removal technologies. Case studies are presented from Argentina, Bolivia, Chile, Ecuador, El Salvador, Mexico, Nicaragua and Peru, amongst others, and are viewed against the background of experience from other world regions. The book is a state-of-art overview of arsenic research in Latin America. It aims to create interest within the Latin American countries affected by the presence of arseniferous aquifers and to increase awareness among administrators, policy makers and company executives. It will also serve to inform the international scientific community, and improve international cooperation on arsenic in groundwater.
Checklist of the Coleopterous Insects of Mexico, Central America, the West Indies, and South America
Author: Index of NLM Serial Titles
Author: National Library of Medicine (U.S.)Publisher:
ISBN:
Category : Medicine
Languages : en
Pages : 1516
Book Description
A keyword listing of serial titles currently received by the National Library of Medicine.
Checklist of the Coleopterous Insects of Mexico, Central America, the West Indies, and South America
Author: Richard E. BlackwelderPublisher:
ISBN:
Category : Beetles
Languages : en
Pages : 776
Book Description
La Filosofía y la Teoría de la Relatividad de Einstein
Author: Adalberto GarcÍa De MendozaPublisher: Palibrio
ISBN: 1463316224
Category : Science
Languages : en
Pages : 167
Book Description
Solo quiero referir a una opinión de Einstein, este magnífico matemático y hombre de bien. Se le preguntó por qué la mayoría de los estudiantes se les dificultaba el estudio de las matemáticas. Einstein se concretó a decir "La dificultad de las mentes juveniles para entender la matemática estriba en que no han sido suficientemente educadas en el sentimiento del ritmo" Ciertamente, las matemáticas, llevan un ritmo interior, el más profundo que sólo la visión del universo puede entregar a la mente y a la contemplación del intelecto. El arte ornamental siempre se ha proyectado hacia fuera, en cambio, el arte ornamental en la matemática, corresponde únicamente al campo interno del espíritu, a la región de los pensamientos en su más pura manifestación. Las matemáticas son un elemento vital en la vida del hombre, están relacionadas con su producción artística filosófica y en el transcurrir de los siglos pueden interpretarse como una manifestación pura y diáfana de ese ritmo que ha dominado a los pensamientos. DR. ADALBERTO GARCÍA DE MENDOZA
A Selected Guide to the Literature of the Flowering Plants of Mexico
Author: Ida Kaplan LangmanPublisher: University of Pennsylvania Press
ISBN: 1512803375
Category : Nature
Languages : en
Pages : 1020
Book Description
This bibliography is a guide to the literature on Mexican flowering plants, beginning with the days of the discovery and conquest of Mexico by the Spaniards in the early sixteenth century.
Neuroptera (Including Megaloptera)
Author: Charles W. HeckmanPublisher: Springer
ISBN: 3319351257
Category : Science
Languages : en
Pages : 627
Book Description
This order once encompassed all insects with a complex network of wing veins, regardless of whether their metamorphosis was incomplete or complete. By the early 20th century, most of the species had been transferred to new orders, leaving only a small percentage of the insects once assigned to the Neuroptera remaining in that order. By the second half of the 20th century, some of the taxonomists began to believe that the fragmentation of this order had gone too far, and that the order Megaloptera needed to be grouped in some way with Neuroptera, either by making them suborders of the same order or by creating a superorder to accommodate both. This volume provides a discussion of both taxa, tentatively regrouping both in the order Neuroptera. While all known species of Megaloptera in South America have completely aquatic larval stages, few species in the suborder Planipennia, formerly called Neuroptera sensu stricto, are aquatic during any of their life stages. The most interesting of the exceptions are species in the family Sisyridae, some of which develop as larvae inside freshwater sponges. Because only a relatively small number of species are still included in Neuroptera sensu lato, this book provides keys to all known South American species that have been described well enough to be identified with any degree of certainty. Many species in the family Chloropidae, the neuropteran family with the greatest number of recognized species in South America, have proven to be valuable as biological controls for insect pests in agriculture. Their importance for tropical agriculture is another reason for including terrestrial species in this book. The series will continue with volumes providing keys to identify species of other South American orders, but in most cases, only aquatic insects can be included in the keys to the species.