Pentose fermentation to ethanol with recombinant Saccharomyces cerevisiae is slow and has a low yield. A likely reason for this is that the catabolism of the pentoses D-xylose and L-arabinose through the corresponding fungal pathways creates an imbalance of redox cofactors. The process, although redox neutral, requires NADPH and NAD+, which have to be regenerated in separate processes. NADPH is...

background recently, assessment of the atrial motion and deformation indices obtained via doppler myocardial imaging (dmi) has been proposed as a new method of exploring the atrial function. objective our aim was to assess the right atrial (ra) regional function using myocardial velocities, strain, and strain rate imaging (sri) and compare it with the function of the inter-atrial septum (ias) a...

This paper presents a combined experimental–analytical investigation of coal strain development under fluctuating applied hydrostatic stress. The laboratory setup mimics the isotropic volumetric compaction burial–uplift cycles in absence tectonic Special emphasis is placed on corresponding permeability evolution strata. Our results show that stress–strain path exponential, approaching linear re...

Deformation behavior of beryllium during compressive loading and cross-reloading is studied using in-situ high energy synchrotron X-ray diffraction microscopy crystal plasticity modeling. The evolution texture, twinning, elastic lattice strains, flow stress are measured compared with the predictions an advanced elastic-plastic self-consistent (EPSC) model. model initialized experimentally textu...

Different theoretical methodologies are employed to investigate the effect of hydrostatic pressure and anisotropic stress strain on superconducting transition temperature ( Tc) MgB2. This is done both by studying Kohn anomalies in phonon dispersions alone explicit calculation electron–phonon coupling. It found that increasing suppresses Tc all cases, whereas isotropic enhances superconductivity...

Failure of solder joints under shear frequently occurs along a path near and parallel to, but not necessarily exactly at, the interface between the alloy and the bonding material. A numerical finite element analysis was employed to simulate the deformation in solder during cyclic lap-shear testing. High magnitudes of equivalent plastic strain were seen to initiate from the corner regions and sp...

in the present study, the microstructural changes of a nickel based superalloy nimonic80a during a non-isothermal deformation were studied. therefore, microstructure evolutionduring hot side pressing test was predicted with combined methods of finite element analysis andprocessing map of the material. the predicted results were validated through experimentalmicrostructural studies. the results ...