Abstract Precast slab parameters are important factors affecting the mechanical performance and service life of precast-slab-fabricated recyclable roads. To clarify force mechanism roads provide a basis for selecting parameters, field test road fabricated using large-scale precast was conducted in this study. The horizontal vertical stresses on top bottom surfaces determined. stress-time histor...

Stress arching effect during the excavation of broken surrounding rock in underground engineering has an important influence on stability after excavation. To determine stress horizontally layered jointed mass, characteristics mass is analyzed this study by using a series numerical tests. The formation mechanism arch revealed through comparison voussoir beam structure and theoretical analysis m...

A deep bed of granular material (more than six layers ofparticles) was subjected to sinusoidal, vertical vibrations. Several phenomena were observed depending on the amplitude of excitation. These included heaping, surjCace waves, and arching; the transitions from one state to another involved various dynamic instabilities and bifitrcations. The paper includes a description of these phenomena a...

This report describes a case in which a persistent third aortic arch connection partly palliated interruption of the aortic arch. The malformation occurred without other cardiovascular abnormality in a newborn infant in whom the principal diagnostic clinical finding was the absence of all peripheral pulses except for those of the right brachial and carotid arteries. Echocardiographic and angioc...

SIGMOD has had for the past few years an over-arching vision of enabling all information on the database field to be freely accessible to everyone. Of course, this goal runs smack into the economic realities of scientific publishing. So the SIGMOD Executive Committee over the period of 1997–2001 tempered its initial goals to the following strategy, emphasizing free CDROM accessibility first, fo...

Cross-sectional echocardiography (CSE) was performed on 19 patients with mitral stenosis (MS). Nine patients (group 1) had little or no mitral valve (MV) calcification; ten patients (group 2) had heavy MV calcification. An opening snap was present in each of the patients in group 1. Of the group 2 patients, five (group 2A) had an opening snap and five (group 2B) did not. CSE in the long axis re...

Abstract Combining historical, organological, ethnographic, and musical analysis, this article explores the relationship between three bows— Angolan hungu mbulumbumba Brazilian berimbau—in context of South Atlantic African diaspora. Our intervention crisscrosses scholarly debates about survival adaptation bows in Brazil capoeiristas’ discourses origins capoeira berimbau. We argue for a direct c...