There are various parameters that affect stability and expansion of failure zones in under pressure tunnels. Among the important parameters that affect failure zones around the tunnels are cohesion and internal friction angle of the rock mass. In addition, the cross sectional shape is the considerable point in failure distribution around the tunnels. The stress analysis method is one of the app...

Slope failure like in the Hinlopen/Yermak Megaslide is one of the major geohazards in a changing Arctic environment. We analysed hydroacoustic and 2D high-resolution seismic data from the apparently intact continental slope immediately north of the Hinlopen/Yermak Megaslide for signs of past and future instabilities. Our new bathymetry and seismic data show clear evidence for incipient slope in...

Deep earthquakes have been a paradox since their discovery in the 1920s. The combined increase of pressure and temperature with depth precludes brittle failure or frictional sliding beyond a few tens of kilometers, yet earthquakes occur continually in subduction zones to approximately 700 km. The expected healing effects of pressure and temperature and growing amounts of seismic and experimenta...

Studies were performed to determine whether the intrarenal distribution of cortical blood flow is altered in congestive heart failure. Utilizing the radioactive microsphere method, we studied eight dogs that developed congestive heart failure secondary to the construction of an aortocaval fistula. They had marked reduction in total renal blood flow not accompanied by intracortical redistributio...

Abstract The main objective of this study was to analyze the microstructural characteristics and strength performance dissimilar AISI 431 steel/AISI 1018 steel joints developed using rotary friction welding. different regions rod-to-plate were analyzed optical microscopy. tensile properties microhardness evaluated assess joint performance. distribution across cross-sectional region recorded cor...

Tensile cracks in soil slopes, especially developing at the crown, have been increasingly recognized as signal of slope metastability. In this paper, role crown natural slopes was investigated and its effect on stability studied. A numerical modeling simulation tensile behavior soil, based Extended Finite Element Method (XFEM), used. test applied to validate use XFEM before simulation. Slope fa...

OBJECTIVES/HYPOTHESIS Examine a protective crumple zone effect of paranasal sinuses and nasal cavity on skull base fractures. STUDY DESIGN Randomized-control, cadaveric study. METHODS In the experimental group (n = 4), the nasal cavity and bilateral sinuses of cadavers were obliterated with bone cement, whereas the control group (n = 4) had native sinus architecture. Increasing frontal, gla...

Nephronophthisis (NPHP) is a hereditary cystic kidney disorder that causes renal failure in children and young adults and can be associated with various extrarenal disorders, including retinitis pigmentosa. Six NPHP genes, whose functions are disrupted by autosomal recessive mutations in patients with NPHP, have been identified. The majority of patients with NPHP carry homozygous deletions of N...

The present paper deals with the effect of uncertainties on the prediction of fatigue failure of aerospace and mechanical components. Typically the design of such structures has been based on costly experiments or modified versions of Paris law which are applicable to very restricted range of conditions. The present formulation employs cohesive zone elements in order to resolve the fractured zo...