David S. Cannell

University of California, Santa Barbara

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Guenter Ahlers

University of California, Santa Barbara

M. Giglio

University of Milan

Alberto Vailati

University of Milan

William V. Meyer

Glenn Research Center

Barbara J. Frisken

Simon Fraser University

Roberto Cerbino

University of Vienna

S. Mazzoni

European Organization for Nuclear Research

Christopher J. Takacs

SLAC National Accelerator Laboratory

Anthony E. Smart

Middle East Studies Association of North America

Eberhard Bodenschatz

Cornell University

Cooperative Institutions

University of California, Santa Barbara

Centre National de la Recherche Scientifique

University of California System

Université de Pau et des Pays de l'Adour

Total (France)

Laboratoire des Fluides Complexes et leurs Réservoirs

Glenn Research Center

Mondragon University

Princeton University

Case Western Reserve University

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Effect of succinate on the translational diffusion coefficient of aspartate transcarbamylase

Biochemistry (1975)

Stuart B. Dubin David S. Cannell

Employing a differential optical mixing spectrometer, we have determined that the translational diffusion coefficient (DT) of aspartate transcarbamylase (AT-Case) decreases by (4.1 plus or minus 0.6)% in the presence of succinate and carbamyl phosphate. This result, combined with the change in the sedimentation coefficient determined by Gerhart and Schachman (1968) and repeated by us in the present work indicates that ATCase experiences an increase in frictional coefficient of approximately 4% due to succinate and carbamyl phosphate, and that any change in the enzyme's partial specific volume (v) under these conditions is less than about 0.3%. We have also measured (DT)20,w for ATCase as (3.75 plus of minus 0.11) x 10-7 cm2/sec. Combining this with our measured value of s20,2-o for ATCase of (11.7 plus or minus 0.2) x 10-13 sec and the calculated value of v of 0.738 cm3/g (Rosenbusch and Weber, 1971), we have determined the molecular weight of ATCase as (2.9 plus of minus 0.1) x 10-5. We have also observed the ATCase dimer and find that at a dimer concentration of 0.6 mg/ml the value of s20,w for the dimer is 15.8 x 10-13 sec and that this value decreases by (4.0 plus or minus 0.5)% upon the addition of succinate and carbamyl phosphate, a behavior essentially identical with that of the monomer.

Carbamyl Phosphate

Aspartate carbamoyltransferase

10.1021/bi00672a032

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Citations (29)

Dynamics of Long-Wavelength Concentration Fluctuations in Solutions of Linear Polymers

Physical Review Letters (1984)

Pierre Wiltzius Hans R. Haller David S. Cannell Dale W. Schaefer

We report experimental results for a dynamic length scale ${\ensuremath{\xi}}_{H}$ as a function of polymer concentration $c$ for various molecular weight polystyrenes in the two solvents toluene and methyl ethyl ketone. We find that the quantity $\frac{{\ensuremath{\xi}}_{H}}{{R}_{H}}$ is a function only of the reduced concentration $\mathrm{kc}$, where ${R}_{H}$ is the hydrodynamic radius and $k$ is determined from a virial expansion of the diffusion coefficient. However, the dynamic and static length scales are not proportional.

Hydrodynamic radius

Length scale

Dynamics

Linear polymer

Radius of gyration

10.1103/physrevlett.53.834

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Citations (56)

Deterministic and stochastic effects near the convective onset

Journal of Statistical Physics (1989)

Guenter Ahlers Christopher W. Meyer David S. Cannell

Convection cell

Convective flow

10.1007/bf01044706

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Citations (29)

Correlation range and Rayleigh linewidth of xenon near the critical point

Physical review. A, General physics (1980)

Hannes Güttinger David S. Cannell

Accurate measurements are reported of both the correlation range and the Rayleigh linewidth of xenon near its critical point. The linewidth data agree quite well with the mode-mode coupling results, and disagree with renormalization-group dynamics calculations.

Laser linewidth

Critical point (mathematics)

10.1103/physreva.22.285

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Citations (39)

Spontaneous Domain Growth in the One-Phase Region of a Gel/Mixture System

Springer eBooks (1997)

Barbara J. Frisken Arthur E. Bailey David S. Cannell

Binodal

10.1007/978-94-011-5586-1_14

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Wave-Number Selection in Rotating Couette-Taylor flow

Springer series in synergetics (1984)

Guenther Ahlers David S. Cannell

Taylor–Couette flow

Taylor number

Wavenumber

10.1007/978-3-642-69540-7_4

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Stability and noise in Taylor-Couette flow with through-flow

Physica D Nonlinear Phenomena (1992)

Kenneth L. Babcock David S. Cannell Guenter Ahlers

Taylor–Couette flow

Base (topology)

10.1016/0167-2789(92)90146-e

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Citations (36)

Sound propagation in SF6near the critical point

Physical review. A, General physics (1974)

David S. Cannell Dror Sarid

We have used the acoustic-beam probing technique of Gordon and Cohen to measure the speed and attenuation of 36-MHz sound in sulfur hexafluoride near its critical point. The measurements were made along the critical isochore. We have also analyzed all existing sound-speed and attenuation data on the critical isochore in the temperature range $0.1\ensuremath{\le}T\ensuremath{-}{T}_{c}\ensuremath{\le}10.0$ \ifmmode^\circ\else\textdegree\fi{}C. We find that it is possible to model all available data with a frequency-dependent viscosity, involving a slightly modified form of the frequency dependence calculated by Kawasaki using the mode-mode coupling approach of Kadanoff and Swift, together with a single relaxation to account for energy exchange with the vibrational states. We also find that a single-relaxation model involving no critical contribution is not adequate to account for the data.

Speed of Sound

10.1103/physreva.10.2280

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Citations (13)

Different convection dynamics in mixtures with the same separation ratio

Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics (1996)

Kristina Lerman Guenter Ahlers David S. Cannell

We report on convection near threshold in circular samples of radial aspect ratio $\ensuremath{\Gamma}=11.5$ using ethanol-water mixtures with two concentrations $x$, but with the same separation ratio $\ensuremath{\Psi}\ensuremath{\simeq}\ensuremath{-}0.08$. For $x=0.250$, convection begins with transients that lead to a time-independent cell-filling state, typically in a day. For $x=0.011$, there is a range of temperature differences where repeated transients and aperiodically fluctuating localized regions of disordered convection persist for many days. In rare cases these lead to an apparently stable "wall" state of traveling waves surrounding pure conduction.

Separation (statistics)

Dynamics

10.1103/physreve.53.r2041

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Citations (23)

Is there an attractor basin of spiral-defect chaos in intermediate Prandtl number Rayleigh-Bénard convection ? ^

APS Division of Fluid Dynamics Meeting Abstracts (1996)

Kapil M. S. Bajaj David S. Cannell Guenter Ahlers

Rayleigh–Bénard convection

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