Search results for "eCG"
showing 10 items of 102 documents
Comparaison de la mesure des déformations de fantômes de l’aorte à partir d’image obtenues par IRM et stéréovision
2015
International audience; The study of the wall strain distribution could be helpful to improve the decision criterion for surgery of aortic aneurysm. Recently, numerical simulations can complete the data obtained from imaging measurement in order to develop reliable models. However, the used medical imaging tools are not experimentally validated, in metrological point of view. The aim of this study focused on accuracy and reliability of measurement obtained from kinetic MR sequences. The measures of deformations from MRI were compare to those obtained from stereovision system. Cylindrical phantom of silicone material similar to arterial behavior simulated a symmetric aneurysm was designed. A…
Piecgadīgu bērnu radošās darbības veicināšana pētnieciskajās nodarbībās dabā pirmsskolas iestādē
2017
Darba autors – Maruta Ozoliņa. Darba veids – kvalifikācijas darbs. Studiju programma – pirmsskolas izglītības skolotājs. Darba zinātniskais vadītājs- mg. paed.lektore Rūta Vociša. Darba temats – Piecgadīgu bērnu radošuma veicināšana pētnieciskajās nodarbībās dabā pirmsskolas iestādē. Darba mērķis – Izpētīt piecgadīgu bērnu radošuma veicināšanu pētnieciskajās nodarbībās dabā pirmsskolā. Kvalifikācijas darbs sastāv no divām daļām un apakšnodaļām. Teorētiskā daļa. Šajā daļā tiek aplūkoti atzinumi par radošumu, noskaidroti teorētiskie skaidrojumi par pētniecisko darbību dabā un šo pētījumu ietekmi uz personības attīstību. Darba autore iepazīstina ar psihologu pētījumiem par piecgadīgu bērnu psi…
Piecgadīgu bērnu uzvedības paradumu attīstības veicināšana pedagoģiskajā procesā
2018
Darba autore: Ilze Bleikša Kvalifikācijas darba nosaukums ir „Piecgadīgu bērnu uzvedības paradumu attīstības veicināšana pedagoģiskajā procesā”. Pētījums veikts pirmsskolas izglītības iestādē „X” 4-5 gadīgā vecuma grupā. Kvalifikācijas darba mērķis teorētiski analizēt un praktiski noskaidrot piecgadīgu bērnu uzvedības paradumus pedagoģiskajā procesā pirmsskolas izglītības iestādē „X”. Darba autore nosaka iespējamos piecgadīgu bērnu uzvedības paradumu attīstības veicināšanas pedagoģiskos paņēmienus pedagoģiskajā procesā. Kvalifikācijas darbs izstrādāts divās daļās. Pirmā daļa – teorētiskās literatūras izpēte un analīze, otrajā daļā – empīriskā pētījuma norises apraksts, un tiek analizēti pēt…
Piecgadīgu un sešgadīgu bērnu rokas sagatavošana rakstītprasmei sekmēšana zīmēšanas procesā
2017
Kvalifikācijas darba autore Ilze Galeniece, darbā „Piecgadīgu un sešgadīgu bērnu rokas sagatavošana rakstītprasmei sekmēšana zīmēšanas procesā” izvirzījusi mērķi teorētiski un empīriski izpētīt piecgadīgu un sešgadīgu bērnu rokas sagatavošanas rakstītprasmei sekmēšanas iespējas zīmēšanas procesā. Kvalifikācijas darbs sastāv no ievada, divām nodaļām, astoņām apakšnodaļām, kas atspoguļo teorētiskās literatūras analīzi un praktisko darbību. Darba kopējais apjoms ir 62 lappuses, iekļauti 18 attēli, 7 tabulas un 1 pielikums. Kvalifikācijas darbā atsauces ir uz 33 literatūras avotiem, no kuriem 9 ir svešvalodās. Atsaucoties uz tādu psihologu un pedagogu, kā Ž.Piažē, G.Svences, Ļ.Vigotska, Z.Anspo…
Assessing drugs of abuse distribution in Turia River based on geographic information system and liquid chromatography mass spectrometry
2017
Drugs of abuse are continuously discharged into wastewaters as part of their elimination process. Pollution at very low concentrations appears to be broad in environmental compartments near populated areas. A total of 42 drugs of abuse and metabolites were analysed in surface water samples collected in 2012 and 2013 by solid phase extraction and liquid chromatography coupled to mass spectrometry. Analytical results of target compounds were georeferenced and integrated into a geographical information systems (GIS). Ecotoxicological risk of drugs of abuse detected in the Turia River was evaluated in this study by calculating risk quotient (RQ). In 2012, 6 compounds were detected in a total of…
A novel technique for the CMRR improvement in a portable ECG system
2017
This paper presents a new technique to improve the quality of the ECG signals, increasing the Common Mode Rejection Ratio (CMRR). We developed a portable wireless Bluetooth ECG system able to acquire 12 leads, communicating with Smartphones and PCs. Many experiments have been made for measuring CMRR decay due to the difference on skin-electrodes impedances, the asymmetries of the amplifiers input stages and external components. Using some digital potentiometers, the system is able to compensate for these, increasing the CMRR of about 18 dB.
Exercise ECG Testing and Stress Cardiac Magnetic Resonance for Risk Prediction in Patients With Chronic Coronary Syndrome
2021
Vasodilator stress cardiac magnetic resonance (VS-CMR) has become crucial in the workup of patients with known or suspected chronic coronary syndrome (CCS). Whether traditional exercise ECG testing (ExECG) contributes prognostic information beyond VS-CMR is unclear.We retrospectively included 288 patients with known or suspected CCS who had undergone ExECG and subsequent VS-CMR in our institution. Clinical, ExECG, and VS-CMR variables were recorded. We defined the serious adverse events (SAE) as a combined endpoint of acute coronary syndrome, admission for heart failure, or all-cause death.During a mean follow-up of 4.2 ± 2.15 yr, we registered 27 SAE (15 admissions for acute coronary syndr…
Analysis of Cardiac Pulse Arrival Time Series at Rest and during Physiological Stress
2022
The study of cardiovascular dynamics is pivotal in the prevention and monitoring of cardiovascular diseases. Pulse Arrival Time (PAT) series contain information concerning not only the dynamics of the Autonomic Nervous System (ANS), but of all the systems involved in the regulation of cardiovascular homeostasis. This study aims to highlight how indexes extracted from PAT series in time-, frequency- and information-domain allow to discriminate among different physiological conditions. Analyses were carried out on 76 young healthy subjects, at rest and during orthostatic or mental stress. Our results show that PAT indexes vary according to the ANS condition, and may thus be useful parameters …
Occurrence of illicit drugs in two wastewater treatment plants in the South of Italy
2017
In this study the occurrence and the behavior of illicit drugs and their metabolites have been investigated for two wastewater treatment plants (WWTPs) (namely, WWTP-1 and WWTP-2) located in Sicily (island of Italy). Samples were analyzed for methamphetamine, cocaine (COC), 3,4-methylenedioxymethamphetamine (MDMA), methadone (METH), 2-ethylidene-1,5-dimethyl-3,3-diphenylpyrrolidine (EDDP), 3,4-methylenedioxy amphetamine (MDA); 3,4-methylenedioxy ethylamphetamine (MDEA), 11-nor-9-carboxy-Î9-tetrahydrocannabinol (THC-COOH) and Benzoylecgonine (BEG). The BEG, COC, MOR and THC-COOH were found at the highest concentration in both WWTPs. The Wastewater-based epidemiology calculation for BEG, COC…
Spatio‐temporal assessment of illicit drug use at large scale : evidence from 7 years of international wastewater monitoring
2019
Background and aims Wastewater‐based epidemiology is an additional indicator of drug use that is gaining reliability to complement the current established panel of indicators. The aims of this study were to: (i) assess spatial and temporal trends of population‐normalized mass loads of benzoylecgonine, amphetamine, methamphetamine and 3,4‐methylenedioxymethamphetamine (MDMA) in raw wastewater over 7 years (2011–17); (ii) address overall drug use by estimating the average number of combined doses consumed per day in each city; and (iii) compare these with existing prevalence and seizure data. Design Analysis of daily raw wastewater composite samples collected over 1 week per year from 2011 to…