Intrahepatic persistent fetal right umbilical vein: a retrospective study

Introduction: To appraise the incidence and value of intrahepatic persistent right umbilical vein (PRUV). Methods: This was a single-center study. Records of all women with a prenatal diagnosis of intrahepatic PRUV were reviewed. The inclusion criteria were women with gestational age greater than 13 weeks of gestation. Exclusion criteria were fetuses with situs abnormalities, due to the hepatic venous ambiguity, and extrahepatic PRUV. The primary outcome was the incidence of intrahepatic PRUV in our cohort. The secondary outcomes were associated malformations. Results: 219/57,079 cases (0.38%) of intrahepatic PRUV were recorded. The mean gestational age at diagnosis was 21.8 ± 2.9 weeks of gestations. PRUV was isolated in the 76.7%, while in 23.3% was associated with other major or minor abnormalities. The most common associated abnormalities were cardiovascular abnormalities (8.7%), followed by genitourinary abnormalities (6.4%), skeletal abnormalities (4.6%), and central nervous system abnormalities (4.1%). Within the cardiovascular abnormalities, the most common one was ventricular septal defect (six cases). Conclusion: In most cases PRUV is an isolated finding. Associated minor or major malformations are presented in the 23.3% of the cases, so this finding should prompt detailed prenatal assessment of the fetus, with particular regard to cardiovascular system

A Unification Free Introduction to Logic Programming

In this paper, we give a new presentation of the fundamental results of the theory of Logic Programming, which differs from classical introductions in at least two ways: the use of predicate algebras to deal with model theoretical aspects and the parameterization of the resolution algorithm with respect to the specific unification algorithm implemented

Minimum time control of heterodirectional linear coupled hyperbolic PDEs

We solve the problem of stabilization of a class of linear first-order hyperbolic systems featuring n rightward convecting transport PDEs and m leftward convecting transport PDEs. Using the backstepping approach yields solutions to stabilization in minimal time and observer based output feedback

CERN openlab Whitepaper on Future IT Challenges in Scientific Research

This whitepaper describes the major IT challenges in scientific research at CERN and several other European and international research laboratories and projects. Each challenge is exemplified through a set of concrete use cases drawn from the requirements of large-scale scientific programs. The paper is based on contributions from many researchers and IT experts of the participating laboratories and also input from the existing CERN openlab industrial sponsors. The views expressed in this document are those of the individual contributors and do not necessarily reflect the view of their organisations and/or affiliates

The Ideal Candidate. Analysis of Professional Competences through Text Mining of Job Offers

The aim of this paper is to propose analytical tools for identifying peculiar aspects of job market for graduates. We propose a strategy for dealing with daa tat have different source and nature

Electrophoretic separation of large DNAs using steric confinement

We report an alternative method for electrophoretic separation of large DNAs using steric confinement between solid walls, without gel or obstacles. The change of electrophoretic mobility vs confinement thickness is investigated using fluorescence video microscopy. We observe separation at small confinement thicknesses followed by a transition to the bulk behaviour (no separation) at a thickness of about 4 μm (a few radii of gyration for the studied DNA chains). We present tentative explanations of our original observations.Comment: to appear in JCI

Ciencias morales o la confrontación de lenguajes e identidades : Silencios, discursos e identidades en pugna

Ciencias morales de Martín Kohan se inscribe en la serie de narrativa de postdictadura argentina. Como muchas novelas de esta serie, hurga en el pasado reciente, lo reconstruye y lo relee. Ficcionaliza y revisa hechos pero también opera con discursos desplegados en y sobre ese pasado. El tejido textual se conforma a partir de una multiplicidad de discursos: coexisten y se incluyen unos en otros, se excluyen, se interpelan entre sí. Las diferentes voces que ingresan en el tejido polifónico del universo novelesco definen identidades así como las ponen en duda frente a alteridades delimitadas de manera arbitrari

The Business of 19th Century American Landscape Paintings: A Case Study of the Connection Between Art History and Economics

This thesis explores the economic incentives of both businessmen and artists who shared a mutual interest in the business of producing 19th century American landscapes paintings

Prenatal ultrasound diagnosis of fetal chest wall cystic lymphangioma: An Italian case series

Fetal lymphangioma is a rare congenital malformation of lymphatic system that involve the skin and the subcutaneous tissue. The vast majority of the lymphangioma occurs in the neck. More rarely lymphangiomas may occur in the axillary region, including chest wall. Our consecutive case series study included three cases of fetal chest wall cystic lymphangiomas. In our cohort, fetal chest wall cystic lymphangiomas were the 18.8% of the all cases of lymphangiomas of axillary region. In all the three cases no other fetal abnormalities were evaluated, and the chest wall cystic lymphangiomas were unilateral, honeycombed in appearance, with multiple echo-free area of varying size in the mass, with no color flow on Doppler sonography, and with a trend to increase during the gestation. The incidence of chromosomal abnormalities was 33.3%, with one case out of the three being trisomy 21.The literature review revealed only seven cases of fetal chest wall cystic lymphangiomas. The cases were not associated with other abnormalities, nor with abnormal karyotype and only one case of fetal death was reported. Three women delivered vaginally. In summary, fetal chest wall cystic lymphangioma is a very rare malformations with only seven cases reported in the literature. This malformation is usually not associated with abnormal karyotype or other abnormalities and the neonatal outcome is favorable after surgical removal. Spontaneous vaginal delivery may be a safe approach for delivery women with fetal chest wall cystic lymphangioma. CONDENSATION: Fetal chest wall cystic lymphangioma is a very rare malformations with only seven cases reported in the literature. This malformation is usually not associated with abnormal karyotype or other abnormalities and the neonatal outcome is favorable after surgical removal. Spontaneous vaginal delivery may be a safe approach for delivery women with fetal chest wall cystic lymphangioma