The biomechanical role of the horseshoe geometry of the acetabular cartilage is described using a three-dimensional mathematical model. It is shown that the acetabular fossa contributes to a more uniform articular contact stress distribution and a consequent decrease in the peak contact stress. Based on the results it is suggested that the characteristic horseshoe shape of the articular cartila...

A method is considered for locating oscillating, nonrotating solutions for the parametricallyexcited pendulum by inferring that a particular horseshoe exists in the stable and unstable manifolds of the local saddles. In particular, odd-periodic solutions are determined which are difficult to locate by alternative numerical techniques. A pseudo-Anosov braid is also located which implies the exis...

1. Comprehensive surveillance of civets, mice, cats, Golden Syrian hamsters, and horseshoe bats is suggested when SARS or SARS-like CoVs re-emerge in the human population in the future. 2. Rabbits and horseshoe bats are animal carriers of SARS-CoV. 3. Investigation of the genetic diversity of CoV in two bat species (Rhinolophus sinicus and Rhinolophus pearsonii) should provide insights into the...

Plumb Beach, Brooklyn, New York in USA is an important horseshoe crab breeding and nursery ground that has experienced substantial anthropogenic influence, including pollution, erosion and subsequent restoration. Since little is known about the relationship between sediment microbial communities and juvenile horseshoe crab survival, next generation sequencing was used to characterize and compar...

A case of horseshoe-shaped macular tear after blunt trauma with the course of the tear and the relevant findings obtained by spectral-domain optical coherence tomography (SD-OCT) is described. A 21-year-old man who had suffered blunt trauma 5 days previously visited our clinic complaining of vision loss in his left eye. Ophthalmic examination and SD-OCT images revealed a horseshoe-shaped macula...

INTRODUCTION Horseshoe kidney is a rare congenital malformation that is found in approximately 0.25% of the general population and usually remains asymptomatic. CASE PRESENTATION We report a successful transureteropyelostomy after heminephrectomy of the non-functional right moiety in a 25-year-old man with horseshoe kidney who had a combined 50% functional loss and hydronephrosis due to multi...

Received July 2006 Accepted October 2006 INTRODUCTION Horseshoe kidney, first recognized at autopsy by DeCarpi in 1521, is a renal fusion anomaly found in about 0.25% of the population.(1) Malignancies are associated with this anomaly and adenocarcinoma comprises about 50% of tumors arising in the horseshoe kidney.(1) We report a case of renal cell carcinoma in a 66-yearold man and depict our e...

We prove John Hubbard’s conjecture on the topological complexity of the hyperbolic horseshoe locus of the complex Hénon map. In fact, we show that there exist several non-trivial loops in the locus which generate infinitely many mutually different monodromies. Furthermore, we prove that the dynamics of the real Hénon map is completely determined by the monodromy of the complex Hénon map, provid...

Horseshoe kidney is a rare congenital anomaly that may cause various technical problems during conventional repairs of abdominal aortic aneurysms. We report the case of a 68-year-old woman with a horseshoe kidney, symptomatic abdominal aortic aneurysm and mild renal failure. The patient underwent endovascular repair using a bifurcated endoprosthesis. The postoperative was uneventful. We describ...