We compute families of symmetric periodic horseshoe orbits in the restricted three-body problem. Both the planar and three-dimensional cases are considered and several families are found. We describe how these families are organized as well as the behavior along and among the families of parameters such as the Jacobi constant or the eccentricity. We also determine the stability properties of in...

Biological membranes create compartments, and are usually formed by lipid bilayers. However, in hyperthermophilic archaea that live optimally at temperatures above 80°C the membranes are monolayers which resemble fused bilayers. Many double-stranded DNA viruses which parasitize such hosts, including the filamentous virus AFV1 of Acidianus hospitalis, are enveloped with a lipid-containing membra...

INTRODUCTION Horseshoe kidney is the most common fusion abnormality in the kidney and occurs in 1 per 400 people with the male female ratio of 2:1.(1) Duplication of renal collecting system is the most common upper tract anomaly with an incidence of 0.5-0.8%.(2) Unilateral duplication is six times more frequent than bilateral duplication, with equal incidence on right and left sides.(3) However...

We herein report a case of 20-year-old man who underwent a contrast-enhanced computerized tomography of the pelvis for a workup of complicated urinary tract infection, which showed presence of classical horseshoe kidney and incidental left-sided infrarenal inferior vena cava (IVC). The left IVC joined the left renal vein and crossed anterior to the aorta, uniting with the right renal vein to fo...

Different types of chaotic flow are possible in the 3-dimensional state spaces of two simple nonlinear differential equations. The first equation consists of a 2-variable, double-focus subsystem complemented by a linearly coupled third variable. It produces at least three types of chaos: Lorenzian chaos, "sandwich" chaos, and "horseshoe" chaos. Two figure 8-shaped chaotic regimes of the latter ...

BACKGROUND AND PURPOSE Horseshoe kidney is an uncommon renal anomaly often associated with ureteropelvic junction (UPJ) obstruction. Advanced minimally invasive surgical (MIS) reconstructive techniques including laparoscopic and robotic surgery are now being utilized in this population. However, fewer than 30 cases of MIS UPJ reconstruction in horseshoe kidneys have been reported. We herein rep...

Background: Placenta accreta is one of the known causes of maternal mortality and morbidity. If diagnosed before delivery, appropriate actions can be taken. The aim of this study was to investigate the role of scaling combination of risk factors in predicting placenta accreta spectrum (PAS). Methods: In this cross-sectional study, 120 pregnant women with two criteria and more of placenta previ...