موضوعات
آموزش و پرورش
ادبیات و زبان
پزشکی، دندانپزشکی و داروسازی
تاریخ و جغرافیا
داستان و رمان
دیگر
دین و فلسفه
روانشناسی
ریاضیات و آمار
سلامتی، تناسب اندام و رژیم غذایی
شیمی و پلیمر
علوم اجتماعی و حقوق
علوم زیستی و بیوتکنولوژی
فیزیک و نجوم
کامپیوتر و اینترنت
کتابهای کودکان و داستان
کسب و کار و اقتصاد
کشاورزی و دامپزشکی و غذا
معماری
مهندسی و فناوری
هنر و تئاتر
محصولات
Elastomer Stereospecific Polymerization (Advances in Chemistry Series, Volume 052) - PDF
نویسندگان: خلاصه: Addition polymerization, initiated by organometallic compounds, has in recent years aroused widespread interest mainly because of the stereospeciflc character of many of these systems. It soon became apparent that the chain propagation reaction in these systems differed markedly from that of the wellknown free radical polymerizations in that it involved an orientation of the incoming monomer instead of a more random reaction. However, elucidating the detailed mechanism of this important step has been difficult owing to lack of knowledge about the exact structure of the organometallic compound as well as the heterogeneous nature of most such systems. The available knowledge of stereoregular polymerization (1), anionic propagation kinetics (13), and organolithium polymerization (2) has recently been reviewed. Based on presently available knowledge, therefore, it is now possible to sketch some general guide lines toward a better understanding of these phenomena.
Handbook of Water and Wastewater Microbiology - Original PDF
نویسندگان: خلاصه: The purpose of this Handbook is to provide an introduction to modern water and wastewater microbiology, especially for water and wastewater engineers. The study of water and wastewater microbiology is very rewarding: better water treatment, better wastewater treatment, safer wastewater reuse, and thus healthier people – in all parts of our world.
Hope for a Heated Planet: How Americans Are Fighting Global Warming and Building a Better Future - Original PDF
نویسندگان: خلاصه: am finishing this book in the final days of the George W. Bush adminis- tration. For those of us who love the environment and long for peace, it has been a dark time. Through it, I have often thought of the words of the poet Theodore Roethke that I first heard from scholar and activist Robert Jay Lifton: “In a dark time, the eye begins to see.” The first light of dawn is now visible as the Democratic candidate, Senator Barack Obama, pushed by a growing grassroots movement, embraces action on climate change. To a lesser degree, though far more than President Bush, so does the Republican contender, Senator John McCain. That was far from the case when I began this project at the height of the president’s wartime popularity. This has turned out to be a book as much about hope and democracy as it is about global warming. Its central theme is that you and I can change history. What we believe, what actions we take, actually matter. It is an idea central to democracy. And it should give us hope. I disagree, strongly, with those who believe the American public has turned into a hopeless gaggle of consumers and couch potatoes who are content to let others rule their lives—or destroy the planet. At the height of President Bush’s popularity and influence it may have appeared that way. But national security and environmental degradation (especially global climate change) are complex, difficult, and abstract sub- jects. It has taken some time for us Americans to grasp the gravity of our situation, from melting ice caps to Iraq. This is especially true when our media mostly cover the White House and the Pentagon—regardless of the occupants—and report each utterance as gospel. Meanwhile, most of us are busy with jobs, families, and problems near home that we can actually see and do something about. The result has been that global warming—caused by the vast outpour- x P REFACE ings of carbon dioxide (CO2) and other pollutants from our cars, buildings, and factories—has increased and is picking up speed. But at the same time, so has a growing and revived environmental movement. It is joined now with new allies from the religious community, business, labor, medical and public health professionals, educators, and more. This new climate move- ment has deep roots in the big environmental groups, too often ignored or derided, that have been working to warn us and prevent global climate change since the elder George Bush’s administration in the 1980s. Their work is now bearing fruit. The public is becoming aroused and engaged. And, as a result, we will have a new, much more climate-friendly president and Congress in 2009. This book tells that story and also ex- plains the basics of climate change and its effects on human health and well-being—not just on polar bears and penguins. But Hope for a Heated Planet is finally about solutions to our dilemma. I’ve tried to give you the best steps you can take, both personal and political, to make a difference and to get involved. Like most authors, I like to imagine, of course, that our new president will take to heart every word I have poured out here. But even more impor- tant is that you do. My mother, Margaret Kirkland Musil, died after ninety- one wonderful years as I was writing. She taught me to love life, to love nature, to learn, to have faith, and to act on my beliefs. My first grandchild, Catherine Kirkland Unruh, was born shortly after. She will need the same lessons. So will all our children and grandchildren. Global climate change, we now know, can be prevented by building a vi- brant, healthy economy that does away with the belching furnaces, smoke- stacks, and combustion engines from the outmoded technologies of the nineteenth and twentieth centuries. But in a democracy, that will depend not on our new president, or the one after that. It is up to us. And the signs now are that many, many citizens and their organizations in this great na- tion are indeed aroused. But to prevail, we will need even more. That is really why I have written. I want you and your family and friends to join with me and millions of other Americans in making history. Nobody else can, or should, do it for you
Medical Ethics A Very Short Introduction Tony Hope - Original PDF
نویسندگان: خلاصه: The fox represents those who pursue many ends, often unrelated and even contradictory, connected, if at all, only in some de facto way, . . . [who] lead lives, perform acts, and entertain ideas that are cen- trifugal rather than centripetal . . . seizing upon the essence of a vast variety of experiences . . . without . . . seeking to fit them into . . . any one unchanging, all-embracing, . . . unitary inner vision. Berlin gives as examples of hedgehogs: Dante, Plato, Dostoevsky, Hegel, Proust, amongst others. He gives as examples of foxes: Shakespeare, Herodotus, Aristotle, Montaigne, and Joyce. Berlin goes on to argue that Tolstoy was a fox by nature but believed in being a hedgehog. 4 Medical Ethics 2. Are you a hedgehog or a fox? I am a fox, or at least would like to be. I admire the intellectual rigour of those who try to produce a unitary vision, but I prefer the rich, contradictory, and sometimes chaotic visions of Berlin’s foxes. I do not, in this book, attempt to approach the various problems I discuss from one single moral theory. Each chapter considers an issue on which I argue for a particular position, using whatever methods of argument seem to me to be the most relevant. I have covered different areas in different chapters: genetics, modern reproductive technologies, resource allocation, mental health, medical research, and so on; and have looked at one issue in each of these areas. At the end of the book I guide the reader to other issues and further reading. The one perspective that is common to all the chapters is the central importance of reasoning and reasonableness. I believe that medical ethics is essentially a rational subject: that is, it is all about giving reasons for the view that you take, and being prepared to change your views on the basis of reasons. That is why one chapter, in the middle of the book, is a reflection on various tools of rational argument. But although I believe in the central importance of reasons and evidence, even here the fox in me sounds a note of caution. Clear thinking, and high standards of rationality, are not enough. We need to develop our hearts as well as our minds. Consistency and moral enthusiasm can lead to bad acts and wrong decisions if pursued without the right sensitivities. The novelist, Zadie Smith, has written: There is no bigger crime, in the English comic novel, than thinking you are right. The lesson of the comic novel is that our moral enthusiasms make us inflexible, one-dimensional, flat. This is a lesson we need to take into any area of practical ethics, including medical ethics. What better place to start this tour of medical ethics than at the end, with the thorny issue of euthanasia? 6 Medical Ethics Chapter 2 Euthanasia: good medical practice, or murder? Good deeds do not require long statements; but when evil is done the whole art of oratory is employed as a screen for it. (Thucydides) The practice of euthanasia contradicts one of the oldest and most venerated of moral injunctions: ‘Thou shalt not kill’. The practice of euthanasia, under some circumstances, is morally required by the two most widely regarded principles that guide medical practice: respect for patient autonomy and promoting patient’s best interests. In the Netherlands and Belgium active euthanasia may be carried out within the law. Outline of the requirements in order for active euthanasia to be legal in the Netherlands 1. The patient must face a future of unbearable, interminable suffering. 2. The request to die must be voluntary and well-considered. 3. The doctor and patient must be convinced there is no other solution. 4. A second medical opinion must be obtained and life must be ended in a medically appropriate way.
The Soundscape: Our Sonic Environment and the Tuning of the World - Original PDF
نویسندگان: خلاصه: The soundscape--a term coined by the author--is our sonic environment, the ever-present array of noises with which we all live. Beginning with the primordial sounds of nature, we have experienced an ever-increasing complexity of our sonic surroundings. As civilization develops, new noises rise up around us: from the creaking wheel, the clang of the blacksmith’s hammer, and the distant chugging of steam trains to the “sound imperialism” of airports, city streets, and factories. The author contends that we now suffer from an overabundance of acoustic information and a proportionate diminishing of our ability to hear the nuances and subtleties of sound. Our task, he maintains, is to listen, analyze, and make distinctions.
Ethnic and Minority Cultures as Tourist Attractions - Original PDF
نویسندگان: خلاصه: This book focuses on ethnic and minority communities in urban contexts and the ways in which their cultures are represented in tourism development. It offers a multi-disciplinary approach which draws on examples and case studies of ethnic and minority communities and cultural tourism development from all around the world, including slums in India, favelas in Brazil, Chinatowns in Australia, Jewish quarters in Central and Eastern Europe, ethnic villages in China, the African district of Brussels, the gay quarter in Cape Town and a desert town in Israel. It offers a positive perspective on ethnic and minority cultures and communities at a time when social and political support is lacking in many countries. This book will be a useful resource for those studying and researching cultural and urban tourism, urban planning and development, community studies and urban and cultural geography.
How to Talk to Anyone: Master Small Talk, Improve your Social Skills, and Build Meaningful Relationships (Communication Mastery Series Book 2) - Epub + Converted Pdf
نویسندگان: خلاصه: How to Talk to Anyone: Master Small Talk, Improve your Social Skills, and Build Meaningful Relationships (Communication Mastery Series Book 2) by Marcus Smith
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