J.H.L. Voncken – författare
Visar alla böcker från författaren J.H.L. Voncken. Handla med fri frakt och snabb leverans.
2 produkter
2 produkter
Häftad, Engelska, 2019
545 kr
Skickas inom 10-15 vardagar
This book offers an up-to-date overview of the coal deposits of South Limburg (Netherlands), the Aachen area (Germany), and the Campine area (Belgium). Although the amount of available literature on these coal deposits is quite vast, the majority of the texts date back to the mid-twentieth century, and most publications focus more on the stratigraphy of the coal layers and the rank of the coal. Moreover, the concept of continental drift is largely ignored in these publications. In addition to providing updated information, this book also discusses coal mining in these regions; the formation and petrography of coal; and the geological evolution of Western Europe/the Netherlands, Germany and Belgium. In order to explain the tropical nature of the flora in the Carboniferous period, paleogeographic aspects are also taken into account.
Häftad, Engelska, 2016
854 kr
Skickas inom 5-8 vardagar
This book deals with the rare earth elements (REE), which are a series of 17 transition metals: scandium, yttrium and the lanthanide series of elements (lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium and lutetium).They are relatively unknown to the wider public, despite their numerous applications and their critical role in many high-tech applications, such as high-temperature superconductors, phosphors (for energy-saving lamps, flat-screen monitors and flat-screen televisions), rechargeable batteries (household and automotive), very strong permanent magnets (used for instance in wind turbines and hard-disk drives), or even in a medical MRI application.This book describes the history of their discovery, the major REE ore minerals and the major ore deposits that are presently being exploited (or are planned to be exploited in the very near future), the physical and chemical properties of REEs, the mineral processing of REE concentrates and their extractive metallurgy, the applications of these elements, their economic aspects and the influential economical role of China, and finally the recycling of the REE, which is an emerging field.