Search results for "gea"
showing 10 items of 1040 documents
Characterization of a neutron–beta counting system with beta-delayed neutron emitters
2016
A new detection system for the measurement of beta-delayed neutron emission probabilities has been characterized using fission products with well known β-delayed neutron emission properties. The setup consists of BELEN-20, a 4π neutron counter with twenty 3He proportional tubes arranged inside a large polyethylene neutron moderator, a thin Si detector for β counting and a selftriggering digital data acquisition system. The use of delayed-neutron precursors with different neutron emission windows allowed the study of the effect of energy dependency on neutron, β and β-neutron rates. The observed effect is well reproduced by Monte Carlo simulations. The impact of this dependency on the accura…
Isopodes Aselloïdes stygobies d’Espagne récoltés par J. Notenboom et I. Meijers, III — Le genre Proasellus: A — Espèces oculées ou microphtalmes
1992
Samples collected in underground waters of Spain by Ine Meijers and Jos Notenboom demonstrated the presence of some oculated asellids previously known: Proasellus coiffaiti, P. coxalis, and P. meridianus, and also four new stygophilous species, more or less depigmented, with different stages of regression of the ocular system: P. beticus n. sp., P. ortizi n. sp., P. aragonensis n. sp., and P. ebrensis n. sp. These forms represent relict populations of ancient epigean species. The anophthalmous species of the Aquitanian Basin, Pyrenees, and Iberian Peninsula are more closely related to P. beticus and P. ortizi than to the Recent epigean species P. coxalis and P. meridianus.
Phytophthora species causing crown and root rot of tomato in southern Italy
2000
Phytophthora capsici, Phytophthora cryptogea and Phytophthora nicotianae were isolated from tomato plants with symptoms of crown and root rot in plastic-house crops in Sicilia and Calabria (southern Italy). The species were identified primarily on the basis of morphological and cultural characteristics. The identification was confirmed using molecular methods, polyacrylamide gel electrophoresis (PAGE) of mycelial proteins and polymorphism of DNA sequences amplified by polymerase chain reaction using random primers (RAPD-PCR). P. capsici caused significant losses in tomato crops that had succeeded capsicum crops. P. cryptogea was found to be the most frequent species causing basal stem rot o…
C1-Esterase Inhibitor Concentrate For Acute Attacks Of Laryngeal Edema In Hereditary Angioedema (HAE): Fixed Dosing Vs Body Weight-Adjusted Dosing
2014
Monte Carlo dosimetric study of the Flexisource Co-60 high dose rate source.
2011
Purpose: Recently, a new HDR 60 Co brachytherapy source, Flexisource Co-60, has been developed (Nucletron B.V. Veenendaal, The Netherlands). This study aims to obtain dosimetric data for this source for its use in clinical practice as required by AAPM and ESTRO. Material and methods: Two Monte Carlo radiation transport codes were used: Penelope2008 and GEANT4. The source was centrally-positioned in a 100 cm radius water phantom. Absorbed dose and collisional kerma were obtained using 0.01 cm (close) and 0.1 cm (far) sized voxels to provide high-resolution dosimetry near (far from) the source. Dose rate distributions obtained with the two Monte Carlo codes were compared. Results and Discussi…
Anestesisykepleieres metoder for å kontrollere cufftrykk – en observasjonsstudie
2021
Bakgrunn: Forskning viser at pasienter i generell anestesi som har fått sine luftveier sikret med en larynxmaske eller en endotrakealtube opplever postoperative pharyngolaryngeale komplikasjoner. Et kontrollert cufftrykk har vist reduksjon i komplikasjoner.
 Hensikt: Hensikten med studien var å undersøke hvilke metoder anestesisykepleiere bruker for å kontrollere cufftrykk, og hvilke begrunnelser de har for å bruke cufftrykkmanometer.
 Metode: Totalt 45 anestesisykepleiere ble observert når de kontrollerte cufftrykket i en endotrakealtube og en larynxmaske. Anestesisykepleierne ble i tillegg spurt om hvilke begrunnelser de hadde for å bruke eller ikke bruke cufftrykkmanometer.�…
Measurement of Pharyngeal Pressure in Patients using Nasal CPAP
1995
In patients with obstructive sleep apnea syndrome (OSAS), nasal continuous positive airway pressure (nCPAP) prevents pharyngeal collapse by applying positive pressure transnasally. Currently there are not objective criteria to determine whether surgical improvement of nasal resistance is necessary in patients undergoing nCPAP treatment. In 16 patients with documented OSAS, inspiratory and expiratory pressures in the pharynx were measured during nCPAP with pressures ranging from 5 to 20 mbar. Identical studies were performed in 12 patients with severe nasal obstruction without OSAS and in eight normal patients. The results of each group were compared to the nasal resistance as measured by a…
Integration of CSR into CEOs’ compensation: effects on social and financial performance of French listed firms
2023
Based on the stakeholder model of corporate governance, this research analyzes the relationship between the integration of corporate social responsibility (CSR) into CEO compensation and corporate social and financial performance, in firms listed on France’s SBF 120 stock market between 2015 and 2019. The results of panel data regressions show that indexing CEO compensation on CSR criteria only influence corporate social performance Moreover, social performance has a positive impact on financial performance and a mediating effect between the integration of CSR criteria into CEO compensation and financial performance.
Risk of Virus Contamination Through Surgical Smoke During Minimally Invasive Surgery: A Systematic Review of the Literature on a Neglected Issue Revi…
2020
Abstract Context The coronavirus disease 2019 (COVID-19) pandemic raised concerns about the safety of laparoscopy due to the risk of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) diffusion in surgical smoke. Although no case of SARS-CoV-2 contagion related to surgical smoke has been reported, several international surgical societies recommended caution or even discouraged the use of a laparoscopic approach. Objective To evaluate the risk of virus spread due to surgical smoke during surgical procedures. Evidence acquisition We searched PubMed and Scopus for eligible studies, including clinical and preclinical studies assessing the presence of any virus in the surgical smoke fr…
Racial disparity and prognosis in patients with mouth and oropharynx cancer in Brazil.
2022
Oral and oropharyngeal cancer (OPC) is an important cause of morbidity and mortality worldwide. Populations in situations of social vulnerability tend to have higher incidences of cancer, a higher proportion of late diagnosis, greater difficulties in accessing health services, and, consequently, worse prognosis. The aim of this study was to evaluate the relationship between race/skin color and OPC prognosis in Brazil. This is a cross-sectional epidemiological study using OPC data from the National Cancer Institute between the years 2000 and 2019. The selected variables were: gender, race/skin color, age, education, smoking and alcohol consumption, stage of the disease and disease status at …