Experimental studies on basalt fiber have been performed in China and abroad. Specifically, the compressive properties, flexural properties, splitting tensile properties and impact test behavior of chopped basalt fiber-reinforced concrete have been investigated. In addition, the effects of the mixing amount of fibers on the mechanical properties of C30 concrete were scrutinized, and the best mi...

Detailed geologic mapping (639 field stations in ~700 km2) and a ~50 km-long gravity survey (142 stations) the western Azuero Peninsula revealed two faulted folded slivers of oceanic crust attached to trailing edge Caribbean Large Igneous Plateau (CLIP). Our new data, along with published geochronology, allowed us reconstruct Cretaceous forearc configuration CLIP prior seamount collision, ophio...

This paper reports the detailed examination of three basalt clasts from Apollo 16 breccia 60639 that represent a new variant of high-Ti basalt returned from the Moon by the Apollo 16 mission. Mineral chemistry and whole-rock analyses were conducted on aliquots from three clasts (breccia matrix, basalt, and basalt + breccia matrix). The basalt clasts, which are not overtly porphyritic, contain c...

Petrologic studies of igneous rocks often rely on whole-rock analyses alone to deduce source and melting histories. Whole-rock compositions represent a mixture of the processes responsible for the final texture and composition of the rock, but do not emphasize the evolutionary processes that the rock may have experienced. We examine the major, minor, and trace element compositions of plagioclas...

The mainly deep-submarine Ontong Java Plateau (OJP) is the result of largest outpouring lava in geologic record. Volcanic events this magnitude can have dramatic environmental impacts due to volatile emissions. We report new S measurements naturally glassy, olivine-hosted melt inclusions and pillow basalt glasses from OJP. combined these data with previous OJP quantify degassing a suite glasses...

Late Ediacaran rocks of the Ouarzazate Group define a thin pile sediments and pyroclastic deposits between Paleoproterozoic basement Cambrian sedimentary cover in southern Kerdous Tagragra d’Akka inliers. In Tafeltast area, terrigenous with volcano-sedimentary are located grabens controlled by syn-sedimentary normal faults. The sedimentation is characterized maximum flooding outlined Agoujgal c...

The only pillow basalt in synorogenic sedimentary rocks at the exterior margin of the Taconic orogen in eastern North America is at Stark’s Knob in eastern New York. Earlier reported as extrusive into allochthonous Ordovician slope and rise facies, this small lens (ca. 125+ m long, 39 m thick) is a fault-bounded block in Upper Ordovician melange under the Taconian frontal thrust. Its N-MORB (no...

BACKGROUND Neck flexion by head elevation using an 8 to 10 cm thick pillow and head extension has been suggested to align the laryngeal, pharyngeal and oral axis and facilitate tracheal intubation. Presently, the laryngeal view and discomfort for tracheal intubation were evaluated according to two different degrees of head elevation in adult patients. METHODS This prospective randomized, cont...