Search results for "Communications"

Broad-beam transmission data for new brachytherapy sources, Tm-170 and Yb-169

2005

The characteristics of the radionuclides (170)Tm and (169)Yb are highly interesting for their use as high dose-rate brachytherapy sources. The introduction of brachytherapy equipment containing these sources will lead to smaller required thicknesses of the materials used in radiation protection barriers compared with the use of conventional sources such as (192)Ir and (137)Cs. The purpose of this study is to determine the required thicknesses of protection material for the design of the protecting walls. Using the Monte Carlo method, transmission data were derived for broad-beam geometries through lead and concrete barriers, from which the first half value layer and tenth value layer are ob…

Information and Communication Technologies to Support Early Screening of Autism Spectrum Disorder: A Systematic Review

2021

 The aim of this systematic review is to identify recent digital technologies used to detect early signs of autism spectrum disorder (ASD) in preschool children (i.e., up to six years of age). A systematic literature search was performed for English language articles and conference papers indexed in Pubmed, PsycInfo, ERIC, CINAHL, WoS, IEEE, and ACM digital libraries up until January 2020. A follow-up search was conducted to cover the literature published until December 2020 for the usefulness and interest in this area of research during the Covid-19 emergency. In total, 2427 articles were initially retrieved from databases search. Additional 481 articles were retrieved from follow-up searc…

Preexisting Ocular Motor Palsy and Central Neuroaxial Block

2017

Upper-Extremity Blocks

1988

Brachial plexus block was first performed in 1885 by William Steward Halsted, who used cocaine and direct exposure of the roots in the neck to accomplish the block. In 1911, Hirschel and Kulenkampff described the first percutaneous brachial plexus block by the axillary and supraclavicular routes respectively. Since these historic reports, the efficacy of brachial plexus block has been confirmed, and the block is now commonly used to provide upperextremity anesthesia.

Early, but not late onset estrogen replacement therapy prevents oxidative stress and metabolic alterations caused by ovariectomy.

2014

Aims: The usefulness of estrogen replacement therapy (ERT) in preventing oxidative stress associated with menopause is controversial. We aimed to study if there is a critical time window for effective treatment of the effects of ovariectomy with estrogens at the molecular, metabolic, and cellular level. Results: Our main finding is that early, but not late onset of ERT prevents an ovariectomy-associated increase in mitochondrial hydrogen peroxide levels, oxidative damage to lipids and proteins, and a decrease in glutathione peroxidase and catalase activity in rats. This may be due to a change in the estrogen receptor (ER) expression profile: ovariectomy increases the ER α/β ratio and immedi…

Disconnected Lives: Trends in Time Spent Alone in Finland

2020

AbstractDiscussions about social isolation have been extensive over the past few decades. A less sociable nature of social ties has been identified in Western societies. The phenomenon has been associated with demographic changes such as aging and living alone as well as changes in the use of new technologies. In this study we employ representative Finnish Time Use Surveys from three decades, 1987–1988 (n = 1887), 1999–2000 (n = 2673) and 2009–2010 (n = 1887) to examine the trends in social isolation, measured as time spent alone. Our results showed that between 1987 and 2010 the time spent alone increased by 124 min per day. The increase was linear and occurred in nearly all population gro…

Blood Pressure Monitoring in Cardiovascular Disease

2017

While the practice of taking blood pressure readings at the physician’s office continues to be valid, home blood pressure monitoring is being increasingly used to enhance diagnostic accuracy and ensure a more personalized follow-up of patients. In the case of white coat hypertension and resistant arterial hypertension, ambulatory blood pressure monitoring is indispensable. Recent studies attach great importance to nocturnal blood pressure patterns, with a reduction in these becoming a treatment goal, a strategy known as chronotherapy. Home blood pressure monitoring is useful for both diagnosis and follow-up of arterial hypertension. Its use, particularly if combined with other patient-suppo…

Combined sub-optimal doses of Rosuvastatin and Bexarotene impairs angiotensin II-induced arterial mononuclear cell adhesion through inhibition of Nox…

2015

Aim: Mononuclear cell (MC) infiltration into the arterial subendothelium is a key event in atherogenesis. Rosuvastatin (Rosu) and bexarotene (Bex) exert anti-inflammatory activity, but serious dose-related adverse effects have emerged. The need for safer and effective strategies to prevent and treat atherosclerosis led us to test the effect of combined use of both drugs on angiotensin II (Ang-II)-induced arterial MC recruitment. Results: Vehicle, Rosu (10–30 nM), Bex (0.3–1 μM), or a combination of both were administered to human umbilical arterial endothelial cells (HUAECs) 20 h before stimulation with 1 μM Ang-II (4 h). Surprisingly, a combination of Rosu (10 nM)+Bex (0.3 μM), which did n…

Long-term placement of continuous popliteal nerve block catheter for management of a wounded patient in a combat field environment: a case report.

2019

Costantino Fontana,1 Monica Rocco,2 Luigi Vetrugno,3 Elena Bignami41Anesthesia and Intensive Care Unit, Sapienza University of Rome, Rome, Italy; 2Intensive Care Unit and Anesthesia, Ospedale S. Andrea Rome, Rome, Italy; 3Anesthesia and Intensive Care Clinic, University-Hospital of Udine, Udine, Italy; 4Intensive Care Unit and Anestehsia, Università degli Studi di Parma, Parma, ItalyCorrespondence: Costantino FontanaAnesthesia and Intensive Care Unit, Sapienza University of Rome, Policlinico Militare di Roma, Piazza Celimontana n. 50, Roma 00184, ItalyEmail cosfontana@gmail.comAbstract: Continuous peripheral nerve block is a relevant part of multimodal treatment of postoperative pain…

The Right to Education and ICT during COVID-19: An International Perspective

2020

There is a lack of concluding evidence among epidemiologists and public health specialists about how school closures reduce the spread of COVID-19. Herein, we attend to the generalization of this action throughout the world, specifically in its quest to reduce mortality and avoid infections. Considering the impact on the right to education from a global perspective, this article discusses how COVID-19 has exacerbated inequalities and pre-existing problems in education systems around the world. Therefore, the institutional responses to guaranteeing remote continuity of the teaching&ndash