This paper aims to investigate the buckling and post-buckling analyses of composite cellular beams. For this, numerical model is calibrated by experimental tests via analysis. A parametric study developed, considering six cross sections. each section, opening diameter web post length are varied. Regarding for symmetrical sections, it was concluded that end an important parameter in strength bea...

The absolute and relative effects of the fi rst thinning on the diameter growth distribution along the stems were studied in 98 Scots pines (Pinus sylvestris L.) at heights of 1.3, 4, 6 and 8 m. The data cover one 3-year pre-thinning period and four 3-year post-thinning periods in plots with densities varying from 575 to 3400 stems ha–1. A shift in the point of maximum diameter growth down the ...

introduction: prefabricated metal and ceramic posts can be used with different kinds of core materials as an alternative to the conventional casting post and cores. it is unclear how these post and core systems can withstand different kind of forces in the mouth. the purpose of this study was to compare the fracture strength of endodontically treated, crowned maxillary incisors restored with ca...

introduction: tonsillectomy is one of the most common surgeries in the world and the most common problem is post-tonsillectomy pain and bleeding. the relief of postoperative pain helps increase early food intake and prevent secondary dehydration. one method for relieving pain is peritonsillar injection of epinephrine along with an anesthetic, which has been shown to produce variable results in ...

A 38-year-old woman presented with acute right hemiplegia and aphasia and initial National Institutes of Health Stroke Scale Score of 18. The patient had past history of Arnold Chiari type I malformation, Attention Deficit Hyperactivity Disorder, fibromyalgia, migraines, and scoliosis. Due to clinical diffusion mismatch on MRI patient underwent an emergent cerebral angiogram which demonstrated ...

Post-synaptic potential (PSP) variability is typically attributed to mechanisms inside synapses, yet recent advances in experimental methods and biophysical understanding have led us to reconsider the role of axons as highly reliable transmission channels. We show that in many thin axons of our brain, the action potential (AP) waveform and thus the Ca++ signal controlling vesicle release at syn...