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Author: Timm Krüger Publisher: Springer Science & Business Media ISBN: 3834823767 Category : Science Languages : en Pages : 169
Book Description
The rheology of dense red blood cell suspensions is investigated via computer simulations based on the lattice Boltzmann, the immersed boundary, and the finite element methods. The red blood cells are treated as extended and deformable particles immersed in the ambient fluid. In the first part of the work, the numerical model and strategies for stress evaluation are discussed. In the second part, the behavior of the suspensions in simple shear flow is studied for different volume fractions, particle deformabilities, and shear rates. Shear thinning behavior is recovered. The existence of a shear-induced transition from a tumbling to a tank-treading motion is demonstrated. The transition can be parameterized by a single quantity, namely the effective capillary number. It is the ratio of the suspension stress and the characteristic particle membrane stress. At the transition point, a strong increase in the orientational order of the red blood cells and a significant decrease of the particle diffusivity are observed. However, the average cell deformation shows no signature of the transition.
Author: Timm Krüger Publisher: Springer Science & Business Media ISBN: 3834823767 Category : Science Languages : en Pages : 169
Book Description
The rheology of dense red blood cell suspensions is investigated via computer simulations based on the lattice Boltzmann, the immersed boundary, and the finite element methods. The red blood cells are treated as extended and deformable particles immersed in the ambient fluid. In the first part of the work, the numerical model and strategies for stress evaluation are discussed. In the second part, the behavior of the suspensions in simple shear flow is studied for different volume fractions, particle deformabilities, and shear rates. Shear thinning behavior is recovered. The existence of a shear-induced transition from a tumbling to a tank-treading motion is demonstrated. The transition can be parameterized by a single quantity, namely the effective capillary number. It is the ratio of the suspension stress and the characteristic particle membrane stress. At the transition point, a strong increase in the orientational order of the red blood cells and a significant decrease of the particle diffusivity are observed. However, the average cell deformation shows no signature of the transition.
Author: H. Haken Publisher: Springer Science & Business Media ISBN: 3642860036 Category : Science Languages : en Pages : 472
Book Description
The study of cooperative phenomena is one of the dominant features of contem porary physics. Outside physics it has grown to a huge field of interdisciplinary investigation, involving all the natural sciences from physics via biology to socio logy. Yet, during the first few decades following the advent of quantum theory, the pursuit of the single particle or the single atom, as the case may be, has been so fascinating that only a small number of physicists have stressed the importance of collective behaviour. One outstanding personality among these few is Professor HERBERT FROHLICH. He has made an enormous contribution to the modern concept of cooperativity and has stimulated a whole generation of physicists. Therefore, it seemed to the editors very appropriate to dedicate a volume on "cooperative phenomena" to him on the occasion of his official retirement from his university duties. Nevertheless, in the course of carrying out this project, the editors have been somewhat amazed to find that they have covered the essentials of contemporary physics and its im pact on other scientific disciplines. It thus becomes clear how much HERBERT FROHLICH has inspired research workers and has acted as a stimulating discussion partner for others. FROHLICH is one of those exceptional scientists who have wor ked in quite different fields and given them an enormous impetus. Unfortunately, the number of scientists of such distinctive personality has been decreasing in our century.
Author: Keith I. Thomassen Publisher: ISBN: Category : Plasma (Ionized gases) Languages : en Pages : 80
Book Description
The objective of this research was to find experimental evidence of an 'anomalous' resistance in plasmas. Anomalous resistance results when collective action by electrons causes randomization of the growing oscillations in the two-stream instability. This sequence of events leading to dissipation of energy was predicted several years ago by Buneman. It is believed that this objective was achieved (i.e., that anomalous resistance is evidenced by observations to be reported here), on a high density plasma subjected to r-f fields by a cavity resonant at a frequency well below the plasma frequency. With sufficient r-f power and density, the two-stream instability should be excited to turbulence level during each halfcycle, causing irreversible power loss. Calculations enumerating the necessary conditions for observing the phenomena were made, showing that the resistance can easily be seen above the intrinsic cavity loss using very moderate amounts of power. (Author).
Author: Charles Crothers Publisher: EOLSS Publications ISBN: 1848263317 Category : Languages : en Pages : 484
Book Description
Historical Developments and Theoretical Approaches in Sociology in two volumes is a component of Encyclopedia of Social Sciences and Humanities in the global Encyclopedia of Life Support Systems (EOLSS), which is an integrated compendium of twenty Encyclopedias. Sociology is one of several social science disciplines and smaller bodies of knowledge which seeks to understand the patterns in social life. There is a broad congruence between the objective configurations of social life and the components of the disciplines studying them, the body of sociological knowledge is socially constructed and the pathways to its gaining of knowledge influenced by a variety of factors. Moreover, since social life is ever-changing, sociology often has to scramble to catch-up with the changing social world. This work is built up around four broad topics, the first providing important shared contextual material and then followed by three broad levels of social analysis: with each of these four parts containing a number of chapters with more specific and in-depth information. The theme essay provides a general introduction and overview of the theme as a whole. In total, the work holds 40 contributions written by a selection of many international renowned specialists from 12 countries. It was important to obtain a wide range of viewpoints giving the ways in which social issues arise quite differently in a range of countries. These two volumes are aimed at the following five major target audiences: University and College Students Educators, Professional Practitioners, Research Personnel and Policy Analysts, Managers, and Decision Makers, NGOs and GOs.
Author: Frank van Tubergen Publisher: Routledge ISBN: 1351134949 Category : Social Science Languages : en Pages : 529
Book Description
Comprehensive and engaging, this textbook introduces students not only to foundational sociological work, but also to insights from contemporary sociological theory and research. This combined approach ensures that students become familiar with the core of sociology: key concepts, theories, perspectives, methods, and findings. Students will acquire the ability to think like a sociologist, investigate and understand complex social phenomena. This text presents a complete sociological toolkit, guiding students in the art of asking good sociological questions, devising a sophisticated theory and developing methodologies to observe social phenomena. The chapters of this book build cumulatively to equip students with the tools to quickly understand any new sociological topic or contemporary social problem. The textbook also applies the sociological toolkit to selected key sociological issues, showing how specific sociological topics can be easily investigated and understood using this approach. Taking a global and comparative perspective, the book covers a rich diversity of sociological topics and social problems, such as crime, immigration, race and ethnicity, media, education, family, organizations, gender, poverty, modernization and religion. The book presents a range of helpful pedagogical features throughout, such as: Chapter overview and learning goals summaries at the start of every chapter; Thinking like a sociologist boxes, encouraging students to reflect critically on learning points; Principle boxes, summarizing key sociological principles; Theory schema boxes, presenting sociological theories in a clear, understandable manner; Stylized facts highlighting key empirical findings and patterns; Key concepts and summary sections at the end of every chapter; and Companion website providing additional material for every chapter for both instructors and students, including PowerPoint lecture notes, discussion questions and answers, multiple-choice questions, further reading and a full glossary of terms. This clear and accessible text is essential reading for students taking introductory courses in sociology. It will also be useful for undergraduate and graduate courses in other social science disciplines, such as psychology, economics, human geography, demography, communication studies, education sciences, political science and criminology.
Author: Dirk Franken Publisher: Walter de Gruyter ISBN: 3110326183 Category : Philosophy Languages : en Pages : 236
Book Description
John R. Searle is one of the world's leading philosophers. During his long and outstanding career, he has made groundbreaking and lasting contributions to the philosophy of language, to the philosophy of mind, as well as to the nature, structure, and functioning of social reality. This volume documents the 13th Münster Lectures on Philosophy with John R. Searle. It includes not only 11 critical papers on Searle’s philosophy and Searle's replies to the papers, but also an original article by John R. Searle on his overall philosophical enterprise entitled "The Basic Reality and the Human Reality". "I think Münster is probably unique among contemporary universities in its ability to produce such a high level of philosophical production from their philosophy students." - John R. Searle
Author: Sonia E Alvarez Publisher: Routledge ISBN: 0429980760 Category : Political Science Languages : en Pages : 834
Book Description
This book argues the relationship between culture and politics can be productively explored by delving into the nature of the cultural politics enacted by Latin American social movements and by examining the potential of this cultural politics for fostering social change.
Author: Timm Krüger
Author: Timm Krüger
Author: Joel Louis Lebowitz
Author: H. Haken
Author: Keith I. Thomassen
Author: Judah M. Eisenberg
Author: Francesco Alberoni
Author: Charles Crothers 
Author: Frank van Tubergen
Author: Dirk Franken
Author: Sonia E Alvarez