Deborah

Stress relaxation time, obtained from rheograms based on viscometric flows, is used to define a dimensionless parameter called the Deborah number , which quantifies the elastic character of a fluid... 

A parameter indicating whether viscoelastic effects are important is the Deborah number, which is the ratio of the characteristic relaxation time of the fluid to the characteristic time scale of the flow. For small Deborah numbers, the relaxation is fast compared to the characteristic time of the flow, and the fluid behavior is purely viscous. For veiy large Deborah numbers, the behavior closely resembles that of an elastic solid. 

To do this, a Deborah Number Adeb. has been deflned as... 

Dr. Trevor Kletz Dr. Deborah Lucas Barry Kirwan Andrew Livingston... 

The Deborah number Db has been defined by Metzner, White and Denn 201 as ... 

Joseph Potenza, Rutgers University Sara Sutcliffe, University of Texas, Austin David Vandenbout, University of Texas, Austin Deborah Walker, University of Texas, Austin Zhiping Zheng, University of Arizona... 

Chemometrics. By Muhammad A. Sharaf, Deborah L. Illman, and Bruce R. Kowalski... 

A more extensive version of this work has been published, see Ref. 13. The author thanks Dr. James LeMay for several useful discussions. The programming contributions of David Turner, a summer visitor from Drexel University, and Jonathan Mohr and Deborah Weiss, Associated Western University Summer Fellowship participants, is gratefully acknowledged. This work was performed under the auspices of the US Department of Energy by the Lawrence Livermore National Laboratory under Contract No. W-7405-ENG-48. 

The ratio of a material s elastic time constant, te, to the time of an imposed process, tp, is the dimensionless Deborah number, De (= te/tp). When the imposed process time, tp, is rapid, the De number will be high, elastic stresses will dominate, the first (viscous) term in Eq. (2) will be negligible and the material will behave purely elastically. For rapid processing operations therefore, Eqs. (1) and (2) can be rewritten as ... 

Returning to Eq. (1) and considering the response of a biomaterials to an imposed stress in a relatively slow process (long process time, tp and low Deborah number, De), the elastic component, the second term, of Eq. (1) will be small and the wall material is likely to behave in a viscous manner. Thus Eq. (1) reduces to ... 

Vrentas, JS Duda, JL, Diffusion in Polymer-Solvent Systems, in. Construction of Deborah Number Diagrams, Journal of Polymer Science Polymer Physics Edition 15,441,1977. Wakao, N Smith, JM, Diffusion in Catalyst Pellets, Chemical Engineering Science 17, 825, 1962. 

The single best source for quick and reasonably thorough access to the body of knowledge associated with computer ethics is Deborah Johnson s Computer Ethics (3rd edition, 2001). The first edition of that work [17], the first book listed under computer ethics in the Philosopher s Index, provides a conceptual framework for the issues of privacy, liability, ownership, and power. Despite its very early appearance in the short history of computer ethics, much of the analysis retains its value. 

Deborah Plummer Illustrated by Alice Harper ISBN 978 1 84310 488 9... 

Deborah Plummer Illustrated byJane Serrurier ISBN 978 1 84310 424 7... 

Ph.D., performed the computer programming and statistical analysis. Candace Young and Frieda Fisher helped with data management. William Bax, Joseph Wade, Charles Bennett, Gertie King, Dennis Miles, Jimmie Pickett, Frank Porter, Deborah Richardson, and Alice Roberts collected urine samples. 

Acknowledgment Deborah L. Caupto, APRN and BC Margery H Mark, MD for editorial review... 

Joyce Brewer, PhD, CNM, CFNP Associate Professor University of Mississippi Medical Center Jackson, Mississippi Deborah Chyun, PhD, RN, FAHA Associate Professor and Director Adult Advanced Practice Nursing Yale University School of Nursing New Haven, Connecticut... 

Deborah A. Opacic, EdD, PA-C Assistant Professor Rangos School of Health Sciences Duquesne University Pittsburgh, Pennsylvania... 

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