La nuova serie post-Secret Wars della Ragnetta comincia qui! • La verità sulla morte di Peter Parker e sulla creazione di Lizard! • Inoltre, l’esordio del primo duo di giustizieri del mondo di Spider-Gwen! • Il personaggio dell’anno continua a stupire i suoi fan!
This revised edition of an extremely clear Navy training manual leaves nothing to be desired in its presentation. Thorough in its coverage of basic theory, from the lever and inclined plane to internal combustion engines and power trains, it requires nothing more than an understanding of the most elementary mathematics. Beginning with the simplest of machines — the lever — the text proceeds to discussions of the block and tackle (pulleys and hoists), wheel and axle, the inclined plane and the wedge, the screw, and different types of gears (simple, spur, bevel, herringbone, spiral, worm, etc.).
A chapter on the concept of work discusses the measurement of work, friction, and efficiency; this is followed by investigations of power, force, and pressure, with explanations of the uses of scales, balances, gauges, and barometers. The fundamentals of hydrostatic and hydraulic machines (such as the hydraulic braking system and the hydraulic press) are discussed in detail. The remaining chapters cover machine elements (bearings and springs), basic mechanisms (gear differential, couplings, cams, clutches), the internal combustion engine and power trains (including explanations of various transmission systems — synchromesh, auxiliary, etc.). Every concept is clearly defined, and discussions always build easily from elementary theory to specific applications familiar to anyone with the slightest interest in mechanics. Important concepts, machine components, and techniques are clearly illustrated in more than 200 diagrams, drawings, and cross-sections that reveal inner workings — all of these help to clarify even further an already clear and well-organized presentation. Although it was originally designed for use in U.S. Naval Training Schools, this book can be used to great advantage as a basic text in mechanical engineering in standard technical schools, and it will be immensely valuable even to lay readers who desire a basic knowledge of mechanics.
Adrift on the Ark is a collection of personal essays by Margaret Thompson that offers a straightforward study of the complex relationship between human beings and the natural world. The essays look at a wide range of beings-from spiders to peacocks-and cover issues such as our irrational phobias, our fascination with zoos, and the myths and stories we have created around the other occupants of this earth. They also observe the joy animals bring to us as our pets and the altruistic relationship between caregivers and companions. With lively anecdotes and engaging portraits of the animals who have enriched Margaret's life, these entertaining and personal essays serve a double purpose: as a reminder of our place in the natural order and our intricate connections with animals; and as a warning about how much we stand to lose by ignoring our responsibilities for all life on earth.
Meant to inspire and motivate, Adrift on the Ark is an enchanting reflection on the beneficial relationship between humans and other animals.
Defending her people and fighting back the Zeniths, has been a constant struggle for Kira and the Nadirs. Not to mention, keeping the two people she loves the most from killing each other.
But now there is a new threat. The Zeniths have attacked their colony and are pushing back the fences! When Kira decides enough is enough, she realizes only when their numbers grow, will they be strong enough to fight for their land. Unfortunately, she discovers not all Nadirs are warm and welcoming in the “Deep South.” When keeping her people safe proves deadly, but uniting the Nadirs in the South becomes deadlier, Kira is forced to make some tough decisions. All the while, deep and dark memories of the facility start to resurface. What did the doctor mean they have big plans for her? And what did he mean by, when she comes of age?
Book by Lenchner, George
About the 17th Karmapa, his discovery and enthronement, the Karma Kagyu lineage and Vajrayana Buddhism as practised by this lineage of the Karmapas.
In this collection of stories from some of your favorite (and soon-to-be favorite) authors, you will find all of the romance, butterflies, and drama that come with love, lust, and everything in-between.