• Mass transfer was studied during bubble formation at a cross-junction. Accuracy of resazurin-based technique improved by advanced image systems. Different mechanisms were observed for the developing O 2 concentration fields. Oxygen fields measured and after pinch-off. A scaling law relating k L f c proposed to gather literature data. Using colorimetric acquisition, equivalent oxygen inside li...

In earlier work, carrying out numerical simulations of the Ricci flows of families of rotationally symmetric geometries on S3, we have found strong support for the contention that (at least in the rotationally symmetric case) the Ricci flow for a “critical” initial geometry– one which is at the transition point between initial geometries (on S3) whose volume-normalized Ricci flows develop a sin...

Spin ice is a magnetic analog of H2O ice that harbors dense static disorder. Dipolar interactions between classical spins yield a frozen frustrated state with residual configurational Pauling entropy and emergent magnetic monopolar quasiparticles. Introducing quantum fluctuations is of great interest as this could melt spin ice and allow coherent propagation of monopoles. Here, we report experi...

Many recent motor control studies such as the synthesis of robotic controllers have been inspired from biological systems. In this paper, a new neural network approach, inspired from neurophysiological theories, is proposed to control multidimensional redundant systems. The main goal of this approach is to perform pinch or grip movement by modeling the cerebro-cerebellar learning of visuomotor ...

The surface diffusion-mediated decay of unidirectional and bidirectional sinusoidal modulations of a solid surface below its roughening temperature was studied by kinetic Monte Carlo simulation. The characteristic decay time for bidirectional modulations with wavelength l was found to scale as l , in agreement with a prediction of Rettori and Villain and in contrast to the classical relaxation ...

BACKGROUND Grip and pinch strength are crucially important attributes and standard parameters related to the functional integrity of the hand. It seems significant to investigate normative data for grip and pinch strength of baseball players to evaluate their performance and condition. Nevertheless, few reports have explained the association between grip and pinch strength and anthropometric va...

The development of visible emissions from an exploding mercury jet, which could be used as a unique high current opening switch, have been detailed. Framing pictures have verified that the expanding luminous front produced by the exploding jet maintains its cylindrical symmetry throughout the most intense period of visible emission. The luminous front expands at a constant rate of 5 x lo3 m/s o...

â liquefied natural gas (lng) is the most economical way of transporting natural gas (ng) over long distances. liquefaction of ng by using vapor compression refrigeration system requires high operating and capital cost. due to lack of systematic design methods for multistage refrigeration cycles, the conventional approaches of determining optimal cycle configuration are mostly based on trial-an...

The focal adhesion (FA) protein PINCH-1 is required for the survival of primitive endoderm (PrE) cells. How PINCH-1 regulates this fundamental process is not known. Here, we use embryoid bodies (EBs) and isolated EB-derived PrE cells to investigate the mechanisms by which PINCH-1 promotes PrE survival. We report that loss of PINCH-1 in PrE cells leads to a sustained activity of JNK and the pro-...

Incorporating the virtual reality technology into stroke rehabilitation has been proved to be effective in improving upper extremity function for stroke survivors. However, without haptic feedback, the recovery of pinch skill will not be sufficient for daily activities. Pinch skill is an important component for hand manipulation. Impaired pinch skill affects dexterity function after stroke. Thi...