Abstract: the article provides a calculation justification of proposed railway structure on reinforced concrete sleeper-free base, for which an analysis existing methodology calculating track strength is carried out, according to dynamic loads acting from rolling stock are determined. The applied sleeper-less structures and results measurements emerging stresses in substructure, measured depth ...

The purpose of the research was to study condition prestressed monoblock concrete sleeper (PMCS) under dynamic loading experimentally and through site investigation. From this research, value deflection base on acceleration sleepers have been obtained. This showed possible correlation relation PCS located a railway track. includes experimentation process which experimental investigations for (P...

The problem of damping the noise on track, arising from movement train, is solved sufficiently but it simple, if rail with spacers laid inside longitudinally located band sleeper-mechanism. result a layered thread, consisting belts: tape elastic three sides, tie-mechanism and ballast layer. unity layers carried out due to their own mass. This static track without external load. Rail compression...

OBJECTIVES To determine the off-shift sleep strategies of bi-ethnic night-shift nurses, the relationship between these sleep strategies and adaptation to shift work, and identify the participant-level characteristics associated with a given sleep strategy. METHODS African-American and non-Hispanic White female, night-shift nurses from an academic hospital were recruited to complete a survey o...

In Krylov's analytical prediction model, the free field vibration response during the passage of a train is written as the superposition of the effect of all sleeper forces, using Lamb's approximate solution for the Green's function of a halfspace. When this formulation is extended with the Green's functions of a layered soil, considerable computational effort is required if these Green's funct...

In a previous communication, Sheets et al. (1954) have shown that three phenol-resistant organisms, a sporeforming rod, a coccus and a short rod, belonging to the genera Bacillus, Micrococcus and Pseudomonas respectively, were isolated from a trickling filter, operated continuously at 54 C for the treatment of phenolic wastes. The Pseudomonas-like rod predominated over the other two types. A pu...

Jorge A. Alvarez, MD, PhD; E. John Orav, PhD; James D. Wilkinson, MD, MPH; Lora E. Fleming, MD, PhD, MPH; David J. Lee, PhD; Lynn A. Sleeper, ScD; Paolo G. Rusconi, MD; Steven D. Colan, MD; Daphne T. Hsu, MD; Charles E. Canter, MD; Steven A. Webber, MBChB; Gerald F. Cox, MD, PhD; John L. Jefferies, MD, MPH; Jeffrey A. Towbin, MD; Steven E. Lipshultz, MD; for the Pediatric Cardiomyopathy Registr...

Daphne T. Hsu, MD; Victor Zak, PhD; Lynn Mahony, MD; Lynn A. Sleeper, ScD; Andrew M. Atz, MD; Jami C. Levine, MD; Piers C. Barker, MD; Chitra Ravishankar, MD; Brian W. McCrindle, MD; Richard V. Williams, MD; Karen Altmann, MD; Nancy S. Ghanayem, MD; Renee Margossian, MD; Wendy K. Chung, MD; William L. Border, MBChB, MPH; Gail D. Pearson, MD, ScD; Mario P. Stylianou, PhD; Seema Mital, MD; for th...

Herein, we use genetic data from 277 sleeper sharks to perform coalescent-based modeling to test the hypothesis of early Quaternary emergence of the Greenland shark (Somniosus microcephalus) from ancestral sleeper sharks in the Canadian Arctic-Subarctic region. Our results show that morphologically cryptic somniosids S. microcephalus and Somniosus pacificus can be genetically distinguished usin...

ONE OF THE GREAT PUZZLES OF SLEEP IS THE EXTENT TO WHICH THE SLEEPER IS AWARE OF EVENTS IN THEIR EXTERNAL ENVIRONMENT. Information processing capabilities at sleep onset and across various depths of sleep are of interest to a general audience, including psychologists, philosophers, and those in the medical field (particularly anesthesiologists). Awareness during sleep is relevant for studies of...