Автор: Berthier Jean, Theberge Ashleigh B., Berthier Erwin Название: Open-Channel Microfluidics: Fundamentals and Applications ISBN: 1643276611 ISBN-13(EAN): 9781643276618 Издательство: Mare Nostrum (Eurospan) Рейтинг: Цена: 10811.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание:
Open microfluidics, the study of microflows having a boundary with surrounding air, encompasses different aspects such as paper or thread-based microfluidics, droplet microfluidics and open-channel microfluidics.
Open-channel microflow is a flow at the micro-scale, guided by solid structures, and having at least a free boundary (with air or vapor) other than the advancing meniscus. This book is devoted to the study of open-channel microfluidics which (contrary to paper or thread or droplet microfluidics) is still very sparsely documented, but bears many new applications in biology, biotechnology, medicine, material and space sciences. Capillarity being the principal force triggering an open microflow, the principles of capillarity are first recalled. The onset of open-channel microflow is next analyzed and the fundamental notion of generalized Cassie angle (the apparent contact angle which accounts for the presence of air) is presented. The theory of the dynamics of open-channel microflows is then developed, using the notion of averaged friction length which accounts for the presence of air along the boundaries of the flow domain. Different channel morphologies are studied and geometrical features such as valves and capillary pumps are examined. An introduction to two-phase open-channel microflows is also presented showing that immiscible plugs can be transported by an open-channel flow. Finally, a selection of interesting applications in the domains of space, materials, medicine and biology is presented, showing the potentialities of open-channel microfluidics.
Автор: Berthier Denis Название: Pattern-Based Constraint Satisfaction and Logic Puzzles ISBN: 1291203397 ISBN-13(EAN): 9781291203394 Издательство: Неизвестно Рейтинг: Цена: 8844.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: "Pattern-Based Constraint Satisfaction and Logic Puzzles" develops a pure logic, pattern-based perspective of solving the finite Constraint Satisfaction Problem (CSP), with emphasis on finding the "simplest" solution. Different ways of reasoning with the constraints are formalised by various families of "resolution rules", each of them carrying its own notion of simplicity. A large part of the book illustrates the power of the approach by applying it to various popular logic puzzles. It provides a unified view of how to model and solve them, even though they involve very different types of constraints: obvious symmetric ones in Sudoku, non-symmetric but transitive ones (inequalities) in Futoshiki, topological and geometric ones in Map colouring, Numbrix and Hidato, and even much more complex non-binary arithmetic ones in Kakuro. It also shows that the most familiar techniques for these puzzles can indeed be understood as mere application-specific presentations of the general rules.
If the frontier, in all its boundless possibility, was a central organizing metaphor for much of U.S. history, today it is arguably the border that best encapsulates the American experience, as xenophobia, economic inequality, and resurgent nationalism continue to fuel conditions of division and limitation. This boldly interdisciplinary volume explores the ways that historical and contemporary actors in the U.S. have crossed such borders—whether national, cultural, ethnic, racial, or conceptual. Together, these essays suggest new ways to understand borders while encouraging connection and exchange, even as social and political forces continue to try to draw lines around and between people.
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