By far the most common rock testing configuration is axisymmetric compression in which the most compressive principal stress (σ1) is axial and the other two are equal and provide the lateral confinement. Somewhat less common is axisymmetric extension in which the least compressive stress (σ3) is axial and the other two are again equal and provide the lateral confinement. Although these tests ha...

A dataset comprised of well-constrained focal mechanisms for 6147 earthquakes recorded in the northwest Geysers geothermal field during the period of 2005–2012 was utilized to conduct a detailed stress study within and below the geothermal reservoir. The high-quality focal mechanisms were organized into grid blocks of varying size using a 3D octree gridding algorithm in which discretization was...

BACKGROUND The American Society of Nuclear Cardiology and the Society of Nuclear Medicine state that incorporation of attenuation-corrected (AC) images in myocardial perfusion scintigraphy (MPS) will improve image quality, interpretive certainty, and diagnostic accuracy. However, commonly used software packages for MPS usually include normal stress databases for non-attenuation corrected (NC) i...

Tube hydroforming (THF) process is used to produce the complex components from the initial cylindrical tubes. In this paper, T- shape component was formed using a tube hydroforming machine and the residual stresses of hydroformed tube was determined by hole drilling method. Subsequently, the thickness distribution and residual stresses of final tube were investigated using experimental and fini...

a parametrik investigation was conducted to study the non-linear behavior of precast and cast-in-place reinforced concrete beam-column connections subjected to tabas seismic forces (1979). the behavior of these types of connections in a four stories structure with respect to strength, ductility , stiffness, and bond deterioration at the joint core are presented and discussed. calculation result...

We study the strict type assignment system, a restriction of the intersection type discipline [6], and prove that it has the principal type property. We define, for a term M, the principal pair (of basis and type). We specify three operations on pairs, and prove that all pairs deducible for M can be obtained from the principal one by these operations, and that these map deducible pairs to deduc...

The relationship between the inter-annual variability of precipitation and satellite derived Outgoing Long-wave Radiations (OLR) is studied over Pakistan during summer months for the period 1980-2007. Principal component analysis technique was applied in order to identify the major modes of oscillations present in the data series. The first four principal components explain 95% of the total var...

Drought is an important factor limiting crop production in arid and semi-arid conditions. Drought indices which provide a measure of drought based on yield loss under drought condition in comparison to normal condition was used for screening drought-tolerant genotypes. This study was conducted to determine drought tolerant genotypes with high yield in stress and non-stress conditions. Ten barle...