Books by "David K. Van Keuren"
6 books found
Soil Emission of Nitrous Oxide and its Mitigation
by David Ussiri, Rattan Lal
2012 · Springer Science & Business Media
Nitrous oxide gas is a long-lived relatively active greenhouse gas (GHG) with an atmospheric lifetime of approximately 120 years, and heat trapping effects about 310 times more powerful than carbon dioxide per molecule basis. It contributes about 6% of observed global warming. Nitrous oxide is not only a potent GHG, but it also plays a significant role in the depletion of stratospheric ozone. This book describes the anthropogenic sources of N2O with major emphasis on agricultural activities. It summarizes an overview of global cycling of N and the role of nitrous oxide on global warming and ozone depletion, and then focus on major source, soil borne nitrous oxide emissions. The spatial-temporal variation of soil nitrous oxide fluxes and underlying biogeochemical processes are described, as well as approaches to quantify fluxes of N2O from soils. Mitigation strategies to reduce the emissions, especially from agricultural soils, and fertilizer nitrogen sources are described in detail in the latter part of the book.
In this thought-provoking book, David Hart challenges the creation myth of post--World War II federal science and technology policy. According to this myth, the postwar policy sprang full-blown from the mind of Vannevar Bush in the form of Science, the Endless Frontier (1945). Hart puts Bush's efforts in a larger historical and political context, demonstrating in the process that Bush was but one of many contributors to this complex policy and not necessarily the most successful one. Herbert Hoover, Karl Compton, Thurman Arnold, Henry Wallace, Robert Taft, and Curtis LeMay--along with more familiar figures like Bush--are among those whose endeavors he traces. Hart places these policy entrepreneurs in the broad scheme of American political development, connecting each one's vision of the state in this apparently esoteric policy area to the central issues, events, and figures of mid-century America and to key theoretical debates. Hart's work reveals the wide range of ideas, often in conflict with one another, that underlay what later observers interpreted as a "postwar consensus." In Hart's view, these visions--and the interests and institutions that shape their translation into public policy--form the enduring basis of American politics in this important area. Policymakers today are still grappling with the legacies of the forged consensus.
Attempts to explain the shift from egalitarian Classical economic thought to the difference and hierarchy of post-Classical economic thinking
We are accustomed to thinking of science and its findings as universal. After all, one atom of carbon plus two of oxygen yields carbon dioxide in Amazonia as well as in Alaska; a scientist in Bombay can use the same materials and techniques to challenge the work of a scientist in New York; and of course the laws of gravity apply worldwide. Why, then, should the spaces where science is done matter at all? David N. Livingstone here puts that question to the test with his fascinating study of how science bears the marks of its place of production. Putting Science in Its Place establishes the fundamental importance of geography in both the generation and the consumption of scientific knowledge, using historical examples of the many places where science has been practiced. Livingstone first turns his attention to some of the specific sites where science has been made—the laboratory, museum, and botanical garden, to name some of the more conventional locales, but also places like the coffeehouse and cathedral, ship's deck and asylum, even the human body itself. In each case, he reveals just how the space of inquiry has conditioned the investigations carried out there. He then describes how, on a regional scale, provincial cultures have shaped scientific endeavor and how, in turn, scientific practices have been instrumental in forming local identities. Widening his inquiry, Livingstone points gently to the fundamental instability of scientific meaning, based on case studies of how scientific theories have been received in different locales. Putting Science in Its Place powerfully concludes by examining the remarkable mobility of science and the seemingly effortless way it moves around the globe. From the reception of Darwin in the land of the Maori to the giraffe that walked from Marseilles to Paris, Livingstone shows that place does matter, even in the world of science.