initial cracks occur in high strength concrete sleepers for various reasons, such as shrinkage and wrong curing and long lifetime of over 50 years of sleepers. these cracks may lead to complete failure of the structure. in order to more accurately design the sleepers, fracture mechanics (not strength of materials) should be incorporated. in order to achieve this purpose, it is important to fore...

Study Objectives To describe sleep duration patterns of adults over a 20-year period; to compare sociodemographic, lifestyle, and health characteristics across these patterns; and to relate the patterns to sleep quality. Methods The study population consisted of 3695 adults aged 20 to 59 years at baseline. Five measurements of self-reported sleep duration were used to compose seven patterns f...

Frank Sohn, on whom the following observations were made, was a hypnotic subject of Mr. Santanelli, a professional hypnotist. The boy had become so subjective that Mr. Santanelli proposed to keep him in a continuous hypnotic sleep for a week, without food or drink, and to use the seven-days sleeper as an additional attraction for his nightly exhibitions of hypnotism. Only two days before the ex...

Michael E. Farkouh, M.D., Michael Domanski, M.D., Lynn A. Sleeper, Sc.D., Flora S. Siami, M.P.H., George Dangas, M.D., Ph.D., Michael Mack, M.D., May Yang, M.P.H., David J. Cohen, M.D., Yves Rosenberg, M.D., M.P.H., Scott D. Solomon, M.D., Akshay S. Desai, M.D., M.P.H., Bernard J. Gersh, M.B., Ch.B., D.Phil., Elizabeth A. Magnuson, Sc.D., Alexandra Lansky, M.D., Robin Boineau, M.D., Jesse Weinb...

Nowadays, railway transport plays a very important role in the system period of positive growth commerce, economy and industry. In accordance with other modes transport, is most stable mode for transporting, safety, capability carrying, social economic benefits. Sleepers have major roles complex distributed load from rails when train goes through to ballast. This study discussed pre-stressed co...

Abstract This paper presents experimental verification of indirect tests for the determination stress-crack opening curve concrete, based on method described in RILEM TC 187-SOC report and submitted to ACI Committee 446 Fracture Toughness Testing Concrete, which relies standard cohesive model. In such method, a bilinear approximation softening is determined from three-point bending notched spec...

Introduction: Posterior shoulder tightness is the extensibility limitations of soft tissue, due to repetitive tensile loading in overhead athletes such as cricket and other sports. Bowling main cause for tightness. Hence Sleeper stretch with muscle energy technique proposed be effecting improving range, flexibility functional ability. Purpose: To examine effectiveness Muscle on posterior among ...