In this paper we introduce new finite elements to approximate the Hellinger Reissner formulation of elastictiy. The elements are the vector valued tangential continuous Nédélec elements for the displacements, and symmetric, tensor valued, normal-normal continuous elements for the stresses. These elements do neither suffer from volume locking as the Poisson ratio approaches 12 , nor suffer from ...

Drought, salinity and low temperatures are major factors limiting crop productivity and quality. Sucrose non-fermenting1-related protein kinase 2 (SnRK2) plays a key role in abiotic stress signaling in plants. In this study, TaSnRK2.8, a SnRK2 member in wheat, was cloned and its functions under multi-stress conditions were characterized. Subcellular localization showed the presence of TaSnRK2.8...

Geoscientists from the Coso Operating Company, EGI-Utah, GeoMechanics International, and the U.S. Geological Survey are cooperating in a multi-year study to develop an Enhanced Geothermal System (EGS) in the Coso Geothermal Field. Key to the creation of an EGS is an understanding of the relationship among natural fracture distribution, fluid flow, and the ambient tectonic stresses that exist wi...

Tidal stresses are thought to be involved in maintaining airway patency in vivo. The present study examined the effects of normal stresses exerted by the lung parenchyma during tidal ventilation on recovery from agonist-induced airway constriction. In seven anesthetized dogs, one lung was selectively ventilated with a Univent endotracheal tube (Vitaid, Lewiston, NY). Airway tone was increased e...

Lower-limb complications associated with diabetes include the development of plantar ulcers that can lead to infection and subsequent amputation. While we know from force-plate analyses that medial/lateral and anterior/posterior shear components of ground-reaction forces exist, little is known about the actual distribution of these stresses during daily activities or about the role that shear s...

The morphology of molybdenum disulfide (MoS2) is a crucial aspect to ensure the functionality this remarkable 2D-material both in electronic and tribological applications. Indeed, dithiocarbamates (MoDTCs) can be tribochemically transformed into MoS2, which able reduce friction coefficient metallic moving parts. However, transformation influenced by temperature, sulfur/oxygen ratio, normal shea...

The problem of multiaxial fatigue is considered from the standpoint amalgamating indicators system reliability. lifetime model derived rule resource indices safety. load represented as a combination individual subprocesses simple types deformation with their amplitudes and stress ratio. A in has been developed, which takes into account parameters cycle shape, type process (in-phase, disproporti...

The residual stresses at a circular punched end face in tempered martensitic high-strength steel sheets were investigated using triaxial stress analysis via X-ray diffraction. maximum principal and its direction calculated from the measured nine components. relationship between directions of hydrogen cracks was verified by generating on same specimen cathodic charging. perpendicular to that str...