BACKGROUND Rotator cuff tears are a significant cause of shoulder morbidity. Surgical techniques for repair have evolved to optimize the biologic and mechanical variables critical to tendon healing. Double-row repairs have demonstrated superior biomechanical advantages to a single-row. METHODS The preferred technique for rotator cuff repair of the senior author was reviewed and described in a...

pollination is the mechanical transfer of male pollen of a flower on the female stigma.this process has a fundamental role to survive the plants species.since this process is invisible ,its importance has been ignored.insufficient pollination can be harmful for the farmer instead of being useful.pollination can be done via some ways.the most important ways are done by insects and wind.pistachio...

1. Introduction. Imagine a collection of books labeled 1 through n arranged in a row in some order. We reorganize the row of books by successively choosing a book at random: choosing book i with probability w i and moving it to the front of the row. This " move-to-front rule " determines an interesting Markov chain on the set of arrangements of the books. If σ and τ denote any two orderings of ...

OBJECTIVES To describe the trip characteristics of vehicle crashes involving children, and to examine the effect of situational factors on front row seating or inappropriate restraint for young children. METHODS A cross sectional study was conducted on children <16 years in crashes of insured vehicles in 15 US states, with data collected using insurance claims records and a telephone intervie...

Micropiles are routinely used in the United States for foundation support and stabilization of slopes. In recent years, several retaining walls have been constructed using micropiles in an A-frame type configuration to support temporary and permanent excavations at sites with limited access and limited right-of-way. Typical A-frame micropile walls consist of a row of vertical micropiles at the ...

In some cases water droplets can completely wet microstructured superhydrophobic surfaces. The dynamics of this rapid process is analyzed by ultrahigh-speed imaging. Depending on the scales of the microstructure, the wetting fronts propagate smoothly and circularly or-more interestingly-in a stepwise manner, leading to a growing square-shaped wetted area: entering a new row perpendicular to the...

The theoretical calculation of a counterweight double-row pile supporting structure is deduced and studied in this paper. derived method applied to Midas GTS NX simulation calculation. A case study deep foundation pit project Shenzhen City used verify analyze the results field monitoring results. On basis, influence law deformation parameters such as row distance, diameter back-row piles load t...

The optics of the posterior eyes of the amphibious spider, Dolomedes aquaticus, are described. The lenses have strongly-curved spherical front and rear surfaces, and therefore, a fairly high light capturing ability — they have F-numbers of 0.9 — yet, the large amount of spherical aberration predicted by their shape is mostly corrected. The receptive segments of the receptors are arranged in row...

OBJECTIVES The first aim was to examine the relationship between driver's age (novice teens, older teens, and adults) and child passenger's restraint status, front row seating, and injury risk. The second aim was to explore whether there was an excess injury risk to child passengers in teen crashes compared to those in adult crashes by examining the contributing factors. METHODS A cross secti...