1.

Record Nr.

UNINA9910455729903321

Autore

Tesař Václav <1939->

Titolo

Pressure-driven microfluidics [[electronic resource] /] / Václav Tesar̆

Pubbl/distr/stampa

Boston, [Mass.] ; ; London, : Artech House, 2007

ISBN

1-59693-135-3

Descrizione fisica

1 online resource (422 p.)

Collana

Artech House integrated microsystems series

Disciplina

620.106

629.8042

Soggetti

Microfluidics

Fluidic devices

Electronic books.

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Note generali

Description based upon print version of record.

Nota di bibliografia

Includes bibliographical references and index.

Nota di contenuto

Contents; Preface; Chapter 1 Introduction and Basic Concepts; 1.1 MEANING AND USE OF MICROFLUIDICS; 1.1.1 Why fluids?; 1.1.2 Why devices without moving parts?; 1.1.3 Why the small size?; 1.2 BASIC PROPERTIES OF DEVICES; 1.2.1 Terminals; 1.2.2 Providing the driving pressure difference; 1.3 FLOW CHARACTERIZATION PARAMETERS; 1.3.1 Character of the flow and the Reynolds number Re; 1.3.2 Scaling down and Re; 1.3.3 Compressibility and the Mach number Ma; 1.3.4 Relation to molecular scale: Knudsen number Kn; 1.3.5 Periodic unsteady flows: Stokes and Strouhal numbers

1.4 REGIONS OF OPERATING PARAMETERS IN MICROFLUIDICSReferences; Chapter 2 Basics of Driving Fluid by Pressure; 2.1 PRESSURE AND VELOCITY; 2.2 FLOW RATE AND CHANNEL CROSS-SECTIONS; 2.2.1 Integral state parameter; 2.2.2 Implications of manufacturing technology; 2.3 STATE PARAMETERS; 2.4 DISSIPATION OF FLUID ENERGY; 2.4.1 Conversion ek->eT; 2.4.2 Steady-state characteristic and the characterization parameter Q; 2.4.3 Total dissipation of jet energy; 2.4.3 Dissipation in separated regions; 2.4.5 Friction loss mechanism; 2.4.6 Asymptotic subdynamic regime

2.5 STATE PARAMETERS FOR COMPRESSIBLE FLOWS2.6 LAWS OF FLOW BRANCHING; 2.6.1 Branching factors; 2.6.2 Comparison with data for biological branchings; 2.6.3 Optimality criteria dictated by



manufacturing technology; 2.7 UNSTEADY FLOW EFFECTS: INERTANCE; 2.8 FLUID ACCUMULATION: CAPACITANCE; 2.8.1 Accumulation mechanisms; 2.8.2 Gravitational capacitance; 2.8.3 Fluid compression capacitance; 2.8.4 Capacitance due to wall elasticity; 2.8.5 Capillary capacitance; References; Chapter 3 Simple Components and Devices; 3.1 CONNECTING CHANNELS; 3.2 AREA CONTRACTIONS AND NOZZLES

3.2.1 Characterization: search for a nozzle invariant3.2.2 Generation of free jets and droplets; 3.2.3 Generating submerged jets; 3.3 DIFFUSERS AND COLLECTORS; 3.4 RESTRICTORS: OBSTACLES TO THE FLOW; 3.5 DIODES; 3.5.1 Labyrinth diodes; 3.5.2 Vortex diodes; 3.5.3 Reverse flow diverters; 3.6 REACTORS AND HEAT EXCHANGERS; 3.7 MIXERS; 3.8 THREE-TERMINAL JET PUMP TRANSFORMERS; 3.8.1 Venturi transformers: a nozzle and a diffuser; 3.8.2 Essential facts about jet pump transformers: two nozzles and a diffuser; 3.8.3 Common terminal and different connections into the circuit

3.9 TOWARD THE SUBDYNAMIC LIMITReferences; Chapter 4 Valves and Sophisticated Devices; 4.1 LOADING CHARACTERISTICS; 4.1.1 Loading a simple jet-type device; 4.1.2 Passive flow control valves; 4.1.3 Load-switching in a passive Coanda-effect valve; 4.1.4 Passive jet-type pressure regulators; 4.2 FLUIDIC CONTROL ACTION: ACTIVE VALVES; 4.2.1 Jet deflection; 4.2.2 Colliding jets; 4.2.4 Separation and supercirculation; 4.2.5 Displacement; 4.2.6 Fluid "plug"; 4.3 JET DEFLECTION; 4.3.1 The deflection mechanism; 4.3.2 Simplest example of the jet-deflection valve

4.3.3 Symmetric proportional control valves

Sommario/riassunto

For engineers interested in working in the area of microfluidics, it is critical to have a solid understanding of how fluid flow in microchannels and devices is driven by pressure differences. This cutting-edge resource provides you with that essential knowledge. Offering you comprehensive and up-to-date details on all aspects of the subject, Pressure Driven Microfluidics presents the basic laws of fluid flow, and goes on to describe sophisticated devices like fluidic amplifiers and oscillators. Moreover, you get in-depth coverage of the various principles of signal and power transformations b



2.

Record Nr.

UNINA9910452074003321

Autore

Fredriksen Paula

Titolo

Sin [[electronic resource] ] : the early history of an idea / / Paula Fredriksen

Pubbl/distr/stampa

Princeton, NJ, : Princeton University Press, 2012

ISBN

1-280-49401-8

9786613589248

1-4008-4159-3

Edizione

[Course Book]

Descrizione fisica

1 online resource (220 p.)

Disciplina

241/.309015

Soggetti

Sin - Christianity - History of doctrines - Early church, ca. 30-600

Theology - History

Electronic books.

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Note generali

Description based upon print version of record.

Nota di bibliografia

Includes bibliographical references and index.

Nota di contenuto

Frontmatter -- Contents -- Prologue -- Chapter 1. God, Blood, and the Temple: Jesus and Paul on Sin -- Chapter 2. Flesh and the Devil: Sin in the Second Century -- Chapter 3. A Rivalry of Genius: Sin and Its Consequences in Origen and Augustine -- Epilogue -- Timeline -- Acknowledgments -- Notes -- Glossary -- Works Cited -- Index Locorum -- General Index

Sommario/riassunto

Ancient Christians invoked sin to account for an astonishing range of things, from the death of God's son to the politics of the Roman Empire that worshipped him. In this book, award-winning historian of religion Paula Fredriksen tells the surprising story of early Christian concepts of sin, exploring the ways that sin came to shape ideas about God no less than about humanity. Long before Christianity, of course, cultures had articulated the idea that human wrongdoing violated relations with the divine. But Sin tells how, in the fevered atmosphere of the four centuries between Jesus and Augustine, singular new Christian ideas about sin emerged in rapid and vigorous variety, including the momentous shift from the belief that sin is something one does to something that one is born into. As the original defining circumstances of their movement quickly collapsed, early Christians were left to



debate the causes, manifestations, and remedies of sin. This is a powerful and original account of the early history of an idea that has centrally shaped Christianity and left a deep impression on the secular world as well.