Life S Ratchet

Author: Peter M. Hoffmann
Editor: Hachette UK
ISBN: 0465033369
Size: 18,16 MB
Format: PDF, Kindle
Read: 226
Download

The cells in our bodies consist of molecules, made up of the same carbon, oxygen, and hydrogen atoms found in air and rocks. But molecules, such as water and sugar, are not alive. So how do our cells—assemblies of otherwise “dead” molecules—come to life, and together constitute a living being? In Life’s Ratchet, physicist Peter M. Hoffmann locates the answer to this age-old question at the nanoscale. The complex molecules of our cells can rightfully be called “molecular machines,” or “nanobots”; these machines, unlike any other, work autonomously to create order out of chaos. Tiny electrical motors turn electrical voltage into motion, tiny factories custom-build other molecular machines, and mechanical machines twist, untwist, separate and package strands of DNA. The cell is like a city—an unfathomable, complex collection of molecular worker bees working together to create something greater than themselves. Life, Hoffman argues, emerges from the random motions of atoms filtered through the sophisticated structures of our evolved machinery. We are essentially giant assemblies of interacting nanoscale machines; machines more amazing than can be found in any science fiction novel. Incredibly, the molecular machines in our cells function without a mysterious “life force,” nor do they violate any natural laws. Scientists can now prove that life is not supernatural, and that it can be fully understood in the context of science. Part history, part cutting-edge science, part philosophy, Life’s Ratchet takes us from ancient Greece to the laboratories of modern nanotechnology to tell the story of our quest for the machinery of life.

The Moral Philosophy Of Elizabeth Anscombe

Author: Luke Gormally
Editor: Andrews UK Limited
ISBN: 1845409035
Size: 13,29 MB
Format: PDF, ePub
Read: 766
Download

Elizabeth Anscombe’s 1958 essay ‘Modern Moral Philosophy’ contributed to the transformation of the subject from the late 1960s, reversing the trend to assume that there is no intrinsic connection between facts, values, and reasons for action; and directing attention towards the category of virtues. Her later ethical writings were focused on particular ideas and issues such as those of conscience, double-effect, murder, and sexual ethics. In this collection of new essays deriving from a conference held in Oxford these and other aspects of her moral philosophy are examined. Anyone interested in Anscombe’s work all want to read this volume.

Life S Engines

Author: Paul G. Falkowski
Editor: Princeton University Press
ISBN: 1400865727
Size: 10,75 MB
Format: PDF, Mobi
Read: 866
Download

The marvelous microbes that made life on Earth possible and support our very existence For almost four billion years, microbes had the primordial oceans all to themselves. The stewards of Earth, these organisms transformed the chemistry of our planet to make it habitable for plants, animals, and us. Life's Engines takes readers deep into the microscopic world to explore how these marvelous creatures made life on Earth possible—and how human life today would cease to exist without them. Paul Falkowski looks "under the hood" of microbes to find the engines of life, the actual working parts that do the biochemical heavy lifting for every living organism on Earth. With insight and humor, he explains how these miniature engines are built—and how they have been appropriated by and assembled like Lego sets within every creature that walks, swims, or flies. Falkowski shows how evolution works to maintain this core machinery of life, and how we and other animals are veritable conglomerations of microbes. A vibrantly entertaining book about the microbes that support our very existence, Life's Engines will inspire wonder about these elegantly complex nanomachines that have driven life since its origin. It also issues a timely warning about the dangers of tinkering with that machinery to make it more "efficient" at meeting the ever-growing demands of humans in the coming century.

Brownian Ratchets

Author: David Cubero
Editor: Cambridge University Press
ISBN: 1316538907
Size: 14,76 MB
Format: PDF, ePub
Read: 521
Download

Illustrating the development of Brownian ratchets, from their foundations, to their role in the description of life at the molecular scale and in the design of artificial nano-machinery, this text will appeal to both advanced graduates and researchers entering the field. Providing a self-contained introduction to Brownian ratchets, devices which rectify microscopic fluctuations, Part I avoids technicalities and sets out the broad range of physical systems where the concept of ratchets is relevant. Part II supplies a single source for a complete and modern theoretical analysis of ratchets in regimes such as classical vs quantum and stochastic vs deterministic, and in Part III readers are guided through experimental developments in different physical systems, each highlighting a specific unique feature of ratchets. The thorough and systematic approach to the topic ensures that this book provides a complete guide to Brownian ratchets for newcomers and established researchers in physics, biology and biochemistry.

Science Cells And Souls

Author: Neville Moray
Editor: Author House
ISBN: 1496996992
Size: 15,83 MB
Format: PDF, ePub
Read: 979
Download

To think about the mind, the self, the will and consciousness used to be left to philosophy. Today neuroscience, genetics and computer science seem poised to take over these topics. Can we find a way to combine modern science with traditional ideas and ways of thinking? What is life? Can we make it? Can we make a person? Can machines think? Do we need the notion of a soul? How does consciousness arise? This book shows how to think about the relation between science and philosophy in order better to understand human nature in the light of modern and traditional knowledge. The aim is not to prove that one approach is better than the other, but to help the reader to form and discuss their own questions. It is a vessel to let you set sail on your own voyage of intellectual discovery.

The Physics Of Living Processes

Author: Thomas Andrew Waigh
Editor: John Wiley & Sons
ISBN: 1118698274
Size: 16,79 MB
Format: PDF, ePub, Docs
Read: 370
Download

This full-colour undergraduate textbook, based on a two semestercourse, presents the fundamentals of biological physics,introducing essential modern topics that include cells, polymers,polyelectrolytes, membranes, liquid crystals, phase transitions,self-assembly, photonics, fluid mechanics, motility, chemicalkinetics, enzyme kinetics, systems biology, nerves, physiology, thesenses, and the brain. The comprehensive coverage, featuring in-depth explanations ofrecent rapid developments, demonstrates this to be one of the mostdiverse of modern scientific disciplines. The Physics of Living Processes: A Mesoscopic Approach iscomprised of five principal sections: • Building Blocks • Soft Condensed Matter Techniques in Biology • Experimental Techniques • Systems Biology • Spikes, Brains and the Senses The unique focus is predominantly on the mesoscale —structures on length scales between those of atoms and themacroscopic behaviour of whole organisms. The connections betweenmolecules and their emergent biological phenomena provide a novelintegrated perspective on biological physics, making this animportant text across a variety of scientific disciplines includingbiophysics, physics, physical chemistry, chemical engineering andbioengineering. An extensive set of worked tutorial questions are included,which will equip the reader with a range of new physical tools toapproach problems in the life sciences from medicine,pharmaceutical science and agriculture.

Investment Guarantees

Author: Mary Hardy
Editor: John Wiley & Sons
ISBN: 9780471460121
Size: 16,12 MB
Format: PDF, ePub, Mobi
Read: 199
Download

A comprehensive guide to investment guarantees in equity-linkedlife insurance Due to the convergence of financial and insurance markets, newforms of investment guarantees are emerging which require financialservice professionals to become savvier in modeling and riskmanagement. With chapters that discuss stock return models, dynamichedging, risk measures, Markov Chain Monte Carlo estimation, andmuch more, this one-stop reference contains the valuable insightsand proven techniques that will allow readers to better understandthe theory and practice of investment guarantees and equity-linkedinsurance policies. Mary Hardy, PhD (Waterloo, Ontario, Canada), is an AssociateProfessor and Associate Chair of Actuarial Science at theUniversity of Waterloo and is a Fellow of the Institute ofActuaries and an Associate of the Society of Actuaries, where sheis a frequent speaker. Her research covers topics in life insurancesolvency and risk management, with particular emphasis onequity-linked insurance. Hardy is an Associate Editor of the NorthAmerican Actuarial Journal and the ASTIN Bulletin and is a DeputyEditor of the British Actuarial Journal.

Winter Winds

Author: Gayle Roper
Editor: Multnomah
ISBN: 0307781682
Size: 12,73 MB
Format: PDF, ePub, Mobi
Read: 689
Download

In Winter Winds, Gayle Roper concludes her delightful Seaside Seasons series with a tale of romance, crime, startling mix-ups, and a few hard hearts that just might get a much-needed midwinter thaw. After his guardian's severe illness, pastor Paul Trevelyan returns to his congregation in Seaside with a big surprise - a wife he's been estranged from for seven years. It was the old man's ailing wish that Dori and Trev return to each other, and they agree, as long as they can sleep in separate bedrooms. The dangers of a sinister luggage mix-up are compounded by discord within the church, as a highly opinionated elder proves he will stop at nothing to see Trev gone. This blizzard of difficulties leaves just a snowball's chance of a thaw between the stubborn spouses. Bitter winds... After a tragedy-riddled early life, Dori MacAllister has made a quiet place for herself on the West Coast, far from the landscape of her earlier heartbreaks. When she receives word that the man who raised her is gravely ill, she is drawn back to a place full of love and longing—and betrayal. Winds of love... Pastor Paul Trevelyan hasn't seen the woman he loves in six years. When he's given a second chance with her, he longs to make it work this time. The trouble is, if he doesn't win her back, it could cost him his job—and his happiness. Winds of danger... The charming town of Seaside now has its very own crime boss, and Officer Maureen Galloway would love to be the one to make charges stick. her investigation leads to Dori MacAllister, but is Dori an accomplice or a victim? And why is pharmacist Phil Trevelyan so bent on getting in Maureen's way?

Life And Death Of Coral Reefs

Author: Charles Birkeland
Editor: Springer Science & Business Media
ISBN: 9780412035418
Size: 18,30 MB
Format: PDF, Kindle
Read: 732
Download

Coral reefs have shaped the surface of our planet far more than has any other ecosystem. They are dynamic systems, producing limestone at the rate of 400-2,000 tons per hectare per year, and influencing the chemical balance of the world's oceans. Coral reefs have been around since before the prairies or other ecosystems of flowering plants existed, yet they vanish about a million years before other groups of organisms each time there is a global mass extinction. They return after each catastrophe, however, following a long period of absence. Although coral reefs are the most productive communities in the sea, the fisheries of coral reefs are among the most vulnerable to overexploitation. Despite having the power to create the most massive structures in the world made by living creatures (including man), the thin veneer of living tissue of coral reef is particularly sensitive to natural disturbances and effects of human activities. Coral reefs are the first to go during periods of climate change, but they have always come back. This combination of attributes, creative power and fragility, resilience and sensitivity, makes management of coral-reef systems a challenge to science. Over 70% of the coral reefs in the Caribbean and Asian waters have been degraded, and perhaps a third of the 400 species of corals in Japanese waters are in danger of local extinction unless effective coastal management practices are established. This book presents what is known about factors that shift the balance between accretion and erosion, recruitment and mortality, stony corals and filamentous algae, recovery and degradation--the life and death of coral reefs. Insight into the factors controlling the direction of these processes is essential for appropriate management decisions.

Ratchet

Author: John Penn
Editor: iUniverse
ISBN: 1475910169
Size: 13,30 MB
Format: PDF, ePub, Docs
Read: 867
Download

Ratchet will take you to a world that you may never have been exposed to. It is a compelling story of the growth of a young boy victimized and grows to tell his tale of survival and triumph. Often Ratchet is humurous and deadly serious showing a dark and deadly side of life. It will place you in the mind and make you examine your life and how you think. It is a page turner filled with a view of a life that will place your mind in your chest and shock you at what people are capable of. It is a "don't miss book."