To what extent do general features of folding/unfolding kinetics of small globular proteins follow from their thermodynamic properties? To address this question, we investigate a new simplified protein chain model that embodies a cooperative interplay between local conformational preferences and hydrophobic burial. The present four-helix-bundle 55mer model exhibits protein-like calorimetric two...

The flow of three non-Newtonian fluids, comprising polymer and surfactant additives, in a periodically constricted tube (PCT) are experimentally compared. radius the walls is sinusoidal with respect to streamwise direction. fluids aqueous solutions flexible polymers, rigid biopolymers surfactants, which typically used for drag-reduction turbulent flows. Steady shear viscosity measurements demon...

The motion of one molecule on a surface can cause the subsequent motion of another molecule, and so on in a cascade of molecular motion. We call such an engineered motion a “molecule cascade”. A molecule cascade is similar to a row of toppling dominoes. It offers a unique chance to study the physical mechanism of hopping molecules as well as interesting applications for information transport an...

Thirty-one chevron osteotomies for hallux valgus performed over a period of four years were reviewed. Their follow-up period ranged from one to five years. All the patients had pain over the bunion prior to operation. After operation, there was marked decrease of pain over the first matatarsophalangeal joint. The preoperative hallux valgus angle average 27 degrees and the postoperative angle av...

The Chevron osteotomy was described in 1976. There have, however, been only short- to mid-term follow-up reviews, often with small numbers of patients. We looked at 112 feet (73 patients) with a minimum follow-up of ten years following Chevron osteotomy with a distal soft-tissue procedure. Clinical evaluation was calculated using the hallux score of the American Orthopedic Foot and Ankle Societ...

experimental tests were performed to study the seismic behavior and performance ofmodified steel chevron braced frame systems, which incorporate a vertical slotted connection(vsc) detail between the top of the braces and the floor beam above. the vsc detail isintended to prevent vertical load transfer to the beam and limit brace forces to thecompressive resistance of the members. full-scale qua...

Lanza, O. Forni, N. Mangold, M. Nachon, S. M. Clegg, A. Yen, S. Maurice, R. C. Wiens, NASA Ames Research Center, Moffett Field CA USA, Blue Marble Space Institute of Science, Seattle WA USA, Chevron Energy Technology Company, Houston TX USA,Los Alamos National Laboratory, Los Alamos, NM USA, Univ. Toulouse & CNRS, IRAP, Toulouse, France, Univ. Nantes & CNRS, Nantes, France, JPL Pasadena CA USA

We demonstrate that catalytic micromotors can be trapped in microfluidic chips containing chevron and heart-shaped structures. Despite the challenge presented by the reduced size of the traps, microfluidic chips with different trapping geometries can be fabricated via replica moulding. We prove that these microfluidic chips can capture micromotors without the need for any external mechanism to ...

In this study, highly accurate measurements of density and dynamic viscosities a recombined live oil its mixture with additional CO 2 were performed. The experiments carried out under pressure temperature gradients found in Brazilian Pre-salt reservoirs, that is, the range from (27.6 to 68.9) MPa at (333.15 353.15) K. assumption volume change on mixing is evaluated experimental results, influen...