Search results for " vessels"

Sonografic examination of epiaortic vessels in patients with peripheral vertigo

2010

Abstract Introduction: To evaluate the utility of echo-color-Doppler ultrasonography (CDU) of extracranial brain-supplying vessels in patients with peripheral vertigo of unknown origin. Materials and methods: One-hundred-fifty-six patients (study group; 42 male and 114 female; mean age 61.86 14.14) and 161 patients (control group; 80 male and 81 female; mean age 62.31 13.69) were prospectively evaluated with CDU of extracranial brain-supplying vessels. Plaques in common and/or internal carotid artery (CA), arterial wall intima-media thickness (IMT) of common CA and peak systolic velocity (PSV) and resistive index (RI) of vertebral arteries (VA) were evaluated. Parametric (t-test) and non-pa…

Solid–Liquid Suspensions in Top-Covered Unbaffled Vessels: Influence of Particle Size, Liquid Viscosity, Impeller Size, and Clearance

2014

Particle suspension in liquids is a unit operation commonly encountered in the process industry. Although it is usually carried out in baffled stirred tanks, there are some specific applications where the presence of baffles may be undesirable. In the present work solid-liquid suspensions are investigated in a radially stirred unbaffled tank provided with a top cover. The minimum impeller speed at which all solid particles get suspended (Njs) and the relevant power requirements (Pjs) are assessed. The dependence of these two parameters on physical properties (liquid viscosity, particle concentration, and size) and system geometrical configurations (impeller diameter and clearance) is invest…

Les phiales étrusques de type Vetulonia/Colmar de la tomba del carrettino à Ca’ Morta (Côme, Italie) : essai de contre-typologie.

2021

AbstractA new study of the patere baccellate from the Tomba del carrettino at Ca’ Morta offers the opportunity to re-examine the typology of the ribbed bowls of Vetulonia/Colmar type and to re-evaluate their funerary contexts. These vessels appear in central and southern Etruria at the end of the eighth and the beginning of the seventh century BC, the site of Vetulonia being considered as their main production site.Ferdinando Sciacca’s (2005) classification of the ribbed bowls of Vetulonia/Colmar type is supported by solid evidence ; it has advanced the subject significantly, but Sciacca’s model nevertheless raises some questions in terms of the hierarchy of the criteria that were chosen.Du…

Hyperplastic Conotruncal Endocardial Cushions and Transposition of Great Arteries in Perlecan-Null Mice

2002

Perlecan is a heparan-sulfate proteoglycan abundantly expressed in pericellular matrices and basement membranes during development. Inactivation of the perlecan gene in mice is lethal at two developmental stages: around E10 and around birth. We report a high incidence of malformations of the cardiac outflow tract in perlecan-deficient embryos. Complete transposition of great arteries was diagnosed in 11 out of 15 late embryos studied (73%). Three of these 11 embryos also showed malformations of semilunar valves. Mesenchymal cells in the outflow tract were abnormally abundant in mutant embryos by E9.5, when the endocardial-mesenchymal transformation starts in wild-type embryos. At E10.5, mut…

Bifocal stimulation in patient with congenitally corrected transposition of great vessels

2012

Congenitally corrected transposition of the great vessels (CCTGV) is a rare congenital heart defect associated with multiple cardiac morphological abnormalities and conduction defects. Complete atrioventricular (AV) block occurs in 30% of patients and it may be present at birth or develop later with a rate of 2% per year; moreover, a systemic right ventricle is frequently characterized by heart failure in adult life. We used a bifocal cardiac stimulation for a young woman affected by CCTGV and atrioventricular Mobitz 2 and 2:1 block, considering structural, anatomic condition, and the high rate of pacing she underwent

Medication related to pigmentation of oral mucosa.

2021

The diagnosis of oral melanotic lesions is, more often than not, challenging in the clinical practice due to the fact that there are several reasons which may cause an increase in pigmentation on localized or generalized areas. Among these, medication stands out. In this work, we have carried out a review in the reference pharma database: Micromedex® followed by a review of the scientific published literature to analyse coincidences and possible discrepancies. Our findings show that there are several prescription drugs that can cause pigmented lesions in the oral mucosa. This must be known by clinicians in order to properly diagnose pigmented lesions. We have identified a set of 21 medicame…

Determination of intrinsic scatter in lifetimes of carbon fibre epoxy pressure vessels in view of defining fundamental safety factors

2011

International audience

The princely tomb of Lavau and the aristocracy of the Aube and the north of the Yonne in the 5th century BCE

2021

Myocardial Glutathione Alterations in Acute Coronary Occlusion in the Dog

1987

Glutathione (GSH) decreases in dog mycocardium upon acute coronary occlusion when compared with sham-operated dogs. Total glutathione content (GSHeq = GSH + ZGSSG) remains unchanged throughout the experiment (6 h after surgery) in both sham- and acute coronary occlusion-operated dogs. GSSG and GSH/GSSG ratio increases and decreases respectively in all animals but tends to reach the normal value after 6 h in sham-operated dogs. Both parameters (GSSG and GSH/GSSG ratio) remain altered in acute coronary occlusion-operated ones. This alteration of glutathione status in ischemic myocardium is discussed.

Creating Global Markets : Seaborne Trade in Pulp and Paper Products Over the Last 400 Years

2018

The declining cost of sea transport has been a necessary condition for the growth of the global pulp and paper industry, especially in regions remote from economic centres. Thus, pulp and paper industries and international shipping have coevolved, especially since the 1960s, enabling producers to tap global markets and develop global production chains. The paper products trade flows, however, have changed a number of times over the last 400 years. This chapter describes and explains these developments and shows how the technological solutions in global shipping and strategic choices among the pulp and paper companies have been interdependent, especially since the 1960s. peerReviewed