. . . but our knowledge is so weak that no philosoph er will ever be able to completely explore the nature of even a fly . . . " * Thornas Aquinas "In Syrnbolurn Apostolorum" 079 RSV p/96 This is a monograph on embryogenesis of the fruit fly Drosophi la melanogaster conceived as a reference book on morphology of embryonie development. A monograph of this extent and con tent is not yet available in the literature of Drosophila embryolo gy, and we believe that there is areal need for it. Thanks to the progress achieved during the last ten years in the fields of devel opmental and molecular genetics, work on Drosophila develop ment has considerably expanded creating an even greater need for the information that we present here. Our own interest for wildtype embryonie development arose several years ago, when we began to study the development of mutants. While those studies were going on we repeatedly had occasion to state in sufficiencies in the existing literature about the embryology of the wildtype, so that we undertook investigating many of these problems by ourselves. Convinced that several of our colleagues will have encountered similar difficulties we decided to publish the present monograph. Although not expressely recorded, Thomas Aquinas probably referred to the domestic fly and not to the fruit fly. Irrespective of which fly he meant, however, we know that Thomas was right in any case.
Long before the hydrogen bomb indelibly associated radioactivity with death, many chemists, physicists, botanists, and geneticists were excited thinking that radium held the key to the secret of life. Luis Campos examines the many and varied connections between early radioactivity research and understandings of vitality, both scientific and popular, in the first half of the twentieth century. As some physicists and chemists early on described the wondrous new element and its radioactive brethren in lifelike terms ( decay, half-life, and frequent reference to the natural selection and evolution of the elements), many biologists of the period eagerly sought to bring radium into the biological fold. They did so with experiments aimed at elucidating some of the most basic phenomena of life, including metabolism and mutation, and often saw in these phenomena properties that in turn reminded them of the new element. These initially provocative links between radium and life proved remarkably productive in experimental terms and ultimately led to key biological insights into the origin of life, the nature of mutation, and the structure of the gene. "Radium and the Secret of Life" traces the half-life of this connection between the living and the radioactive, while also exploring the approach to history that emerges when one follows a trail of associations that, asymptotically, never quite disappears.
This first analysis of Spinoza's philosophy of law shows that he revolutionizes modern philosophy from within by developing an entirely new natural law theory connecting his ontology to radically democratic political views.
If your goal is to be an outstanding manager, this concise business book will provide you with 15 Golden Rules that can put you at the top of your profession. Author Rafael Campos has integrated these rules into his own management techniques with tremendous success, and now he shares them with you. Unlike many business management books, Campos does not use business-speak or buzzwords. His golden rules are all about managing your most valuable resource, the people on your team. Campos recognizes the value of motivated employees and is acutely aware that a positive attitude in the business environment starts at the top. Now you can improve your skills and become the type of manager that motivates others, changes the culture of the business, projects a positive attitude and earns both the respect and appreciation of employees, team members, colleagues, clients and business owners. That s what being an outstanding manager is all about having people who look forward to coming to work every day. Rafael A. Campos is the Regional Manager and oversees the entire Latin America operations for a California-based facilities management company for commercial and industrial locations. During his tenure he has helped grow and expand the company from 150 employees to over 850 today in the Latin America market. Campos, who is bi-lingual and bi-cultural, has extensive managerial experience, working all over the world. One commonality that he has discovered, in his esteemed global career, is that the most important resource to manage in any company is the people. Campos believes very strongly that outstanding managers always take into account the best interest of the people, if they want their business to succeed.
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