Silicon

Presenting the first book to focus on the importance of silicon for plant health and soil productivity and on our current understanding of this element as it relates to agriculture.Long considered by plant physiologists as a non-essential element, or plant nutrient, silicon was the center of attention at the first international conference on Silicon in Agriculture, held in Florida in 1999. Ninety scientists, growers, and producers of silicon fertilizer from 19 countries pondered a paradox in plant biology and crop science. They considered the element Si, second only to oxygen in quantity in soils, and absorbed by many plants in amounts roughly equivalent to those of such nutrients as sulfur or magnesium. Some species, including such staples as rice, may contain this element in amounts as great as or even greater than any other inorganic constituent. Compilations of the mineral composition of plants, however, and much of the plant physiological literature largely ignore this element. The participants in Silicon in Agriculture explored that extraordinary discrepancy between the silicon content of plants and that of the plant research enterprise. The participants, all of whom are active in agricultural science, with an emphasis on crop production, presented, and were presented with, a wealth of evidence that silicon plays a multitude of functions in the real world of plant life. Many soils in the humid tropics are low in plant available silicon, and the same condition holds in warm to hot humid areas elsewhere. Field experience, and experimentation even with nutrient solutions, reveals a multitude of functions of silicon in plant life. Resistance to disease is one, toleration of toxic metals such as aluminum, another. Silicon applications often minimize lodging of cereals (leaning over or even becoming prostrate), and often cause leaves to assume orientations more favorable for light interception. For some crops, rice and sugarcane in particular, spectacular yield responses to silicon application have been obtained. More recently, other crop species including orchids, daisies and yucca were reported to respond to silicon accumulation and plant growth/disease control. The culture solutions used for the hydroponic production of high-priced crops such as cucumbers and roses in many areas (The Netherlands for example) routinely included silicon, mainly for disease control. The biochemistry of silicon in plant cell walls, where most of it is located, is coming increasingly under scrutiny; the element may act as a crosslinking element between carbohydrate polymers. There is an increased conviction among scientists that the time is at hand to stop treating silicon as a plant biological nonentity. The element exists, and it matters.

Silicon, the basic material for a multibillion-dollar industry, is the most widely researched and applied semiconductor, and its surfaces are the most thoroughly studied of all semiconductor surfaces. Silicon Surfaces and Formation of Interfaces may be used as an introduction to graduate-level physics and chemical physics. Moreover, it gives a specialized and comprehensive description of the most common faces of silicon crystals as well as their interaction with adsorbates and overlayers. This knowledge is presented in a systematic and easy-to-follow way. Discussion of each system is preceded by a brief overview which categorizes the features and physical mechanisms before the details are presented. The literature is easily available, and the references am numerous and organized in tables, allowing a search without the need to browse through the text. Though this volume focuses on a scientific understanding of physics on the atomistic and mesoscopic levels, it also highlights existing and potential links between basic research in surface science and applications in the silicon industry. It will be valuable to anyone writing a paper, thesis, or proposal in the field of silicon surfaces.

"As soon as she heard me enter, Elvia awoke from a light sleep that had overcome her as she anxiously waited: 'How did it go?' Excited, I exclaimed: 'It works!' We embraced, almost overwhelmed with feelings of euphoria and happiness, aware that something epochal had happened. On that cold January night of 1971, the world's first microprocessor was born!" The creation of the microprocessor launched the digital age. The key technology allowing unprecedented integration, and the design of the world's first microprocessor, the Intel 4004, were the achievement of Federico Faggin. Shrinking an entire computer onto a tiny and inexpensive piece of silicon would come to define our daily lives, imbuing myriad devices and everyday objects with computational intelligence. In Silicon, internationally recognized inventor and entrepreneur Federico Faggin chronicles his "four lives" his formative years in war-torn Northern Italy; his pioneering work in American microelectronics; his successful career as a high-tech entrepreneur; and his more recent explorations into the mysteries of consciousness. In this heartfelt memoir, Faggin paints vivid anecdotes, steps readers through society-changing technological breakthroughs, and shares personal insights, as each of his lives propels the next.

First Published in 1997. Routledge is an imprint of Taylor & Francis, an informa company.

Within this text, for the first time the synthesis, structural characteristics, physical properties, applications and potential applications of polysiloxanes, polycarbosilanes, polysilazanes, polysilanes, and other silicon-containing polymers are detailed. For years to come this book will be the first point of entry for those seeking to learn about the very significant differences that exist between carbon-based polymers and those with silicon in their backbone.

A Stanford University Three Books Selection for 2019 “Essential.… A conflicted and complex portrait of a city starving for solutions.” —Brandon Yu, San Francisco Chronicle San Francisco is changing at warp speed. Famously home to artists and activists, and known as the birthplace of the Beats, the Black Panthers, and the LGBTQ movement, the Bay Area has been reshaped by Silicon Valley. The richer the region gets, the more unequal and less diverse it becomes, and cracks in the city’s facade—rapid gentrification, an epidemic of evictions, rising crime, atrophied public institutions—are growing wider. Inspired by Studs Terkel’s classic works of oral history, Cary McClelland spent years interviewing people at the epicenter of recent change, from venture capitalists and coders to politicians and protesters, capturing San Francisco as never before.

The battle for online rights and for the future of democracy Who decides what is permissible on the internet: Politicians? Mark Zuckerberg? Users? Who determines when political debate becomes hate speech? How does this impact our identity or our ability to create communities and to protest? Silicon Values reports on the war for digital rights and how major corporations—Facebook, Twitter, Google and Tiktok—threaten democracy as they harvest our personal data in the pursuit of profit.

In Silicon Snake Oil, Clifford Stoll, the best-selling author of The Cuckoo's Egg and one of the pioneers of the Internet, turns his attention to the much-heralded information highway, revealing that it is not all it's cracked up to be. Yes, the Internet provides access to plenty of services, but useful information is virtually impossible to find and difficult to access. Is being on-line truly useful? "Few aspects of daily life require computers...They're irrelevant to cooking, driving, visiting, negotiating, eating, hiking, dancing, speaking, and gossiping. You don't need a computer to...recite a poem or say a prayer." Computers can't, Stoll claims, provide a richer or better life. A cautionary tale about today's media darling, Silicon Snake Oil has sparked intense debate across the country about the merits--and foibles--of what's been touted as the entranceway to our future.

Silicon Second Nature takes us on an expedition into an extraordinary world where nature is made of bits and bytes and life is born from sequences of zeroes and ones. Artificial Life is the brainchild of scientists who view self-replicating computer programs—such as computer viruses—as new forms of life. Anthropologist Stefan Helmreich's look at the social and simulated worlds of Artificial Life—primarily at the Santa Fe Institute, a well-known center for studies in the sciences of complexity—introduces readers to the people and programs connected with this unusual hybrid of computer science and biology. When biology becomes an information science, when DNA is downloaded into virtual reality, new ways of imagining "life" become possible. Through detailed dissections of the artifacts of Artifical Life, Helmreich explores how these novel visions of life are recombining with the most traditional tales told by Western culture. Because Artificial Life scientists tend to see themselves as masculine gods of their cyberspace creations, as digital Darwins exploring frontiers filled with primitive creatures, their programs reflect prevalent representations of gender, kinship, and race, and repeat origin stories most familiar from mythical and religious narratives. But Artificial Life does not, Helmreich says, simply reproduce old stories in new software. Much like contemporary activities of cloning, cryonics, and transgenics, the practice of simulating and synthesizing life in silico challenges and multiplies the very definition of vitality. Are these models, as some would claim, actually another form of the real thing? Silicon Second Nature takes Artifical Life as a symptom and source of our mutating visions of life itself.

DIVDIVComputer programmer Joanna Sheraton must rescue an imprisoned wizard to save the universe from destruction/divDIV /divDIVThere was a time when Joanna Sheraton knew nothing of the Void. She was an ordinary computer programmer, toiling in a cubicle in air-conditioned Southern California comfort, unaware that sinister forces had penetrated her universe. But from across the interdimensional divide, an evil mage had put in motion a scheme for eternal life, by transferring himself into a computer that feeds on Earth’s life force. Called upon to help by the wizard Antryg, Joanna could do nothing more than delay. At the end of her first sojourn across the Void, Antryg was imprisoned and their task seemed hopeless./divDIV /divDIVNow she must depart from Earth once more, to rescue Antryg and save humanity. She is friendless, and the dark mage’s forces hound her every step. But a good hacker is not easily deterred./divDIV /divDIVThis ebook features an illustrated biography of Barbara Hambly, including rare photos and never-before-seen documents from the author’s personal collection./divDIV /div /div