Search results for "pla"
showing 10 items of 51967 documents
Evolution of Seismicity During a Stalled Episode of Reawakening at Cayambe Volcano, Ecuador
2021
Cayambe Volcano is an ice-capped, 5,790 m high, andesitic-dacitic volcanic complex, located on the equator in the Eastern Cordillera of the Ecuadorian Andes. An eruption at Cayambe would pose considerable hazards to surrounding communities and a nationally significant agricultural industry. Although the only historically documented eruption was in 1785, it remains persistently restless and long-period (LP) seismicity has been consistently observed at the volcano for over 10 years. However, the sparse monitoring network, and complex interactions between the magmatic, hydrothermal, glacial, and tectonic systems, make unrest at Cayambe challenging to interpret. In June 2016 a seismic “crisis” …
Electrical conductivity of glass fiber-reinforced plastic with nanomodified matrix for damage diagnostic
2021
The electrical conductivity of glass fiber-reinforced plastic (GFRP) with epoxy matrix modified by multiwall carbon nanotubes (MWCNT) was studied. The electrical conductivity of nanomodified lamina and multi-layered GFRP was investigated on several levels using a structural approach. Components of the electrical conductivity tensor for unidirectional-reinforced monolayer were calculated similarly as in micromechanics using the conductivity of the nanomodified matrix. The electrical conductivity of multilayer composite was calculated using laminate theory and compared with values measured experimentally for various fiber orientation angles. Calculated and experimental data were in good agree…
Voltammetric determination of platinum in perfusate and blood: Preliminary data on pharmacokinetic study of arterial infusion with oxaliplatin
2012
Abstract Because Platinum Group Elements have found widespread use in catalytic converters in cars and as chemotherapeutic agent, interest in the development of reliable analytical methods is carried out in order to monitor these analita in humans to protect the citizen's health. Considering that information on the levels of many trace elements in biological matrices is scarce and for many non-essential elements, baseline levels in the population, and especially in those particularly exposed to the risk are lacking, in this paper we optimize an analytical method for biological matrices, using a voltammetric technique to measure the concentration of Pt in blood and perfusate. The amount of P…
Quantification of Platinum in Edible Mushrooms Using Voltammetric Techniques
2021
Edible mushrooms are a food source with interesting nutritional values. The chief objective of this research was to develop a consistent method for the quantitative ultra-trace analysis of Pt in mushrooms, which is complex because it cannot be readily quantified by common analytical procedures. This research is one of the first analytical methods to establish Pt amount in these vegetables. In this research, 28 different edible mushroom samples from Italy were investigated. Determination of Pt in mushrooms was completed using Differential Pulse Voltammetry (DPV). In this study, we applied the standard addition method because there are no certified reference mushrooms containing platinum grou…
Regulación del volumen plasmático en el ejercicio: papel de la intensidad y la adaptación al entrenamiento.
2016
La función del sistema circulatorio es la de mantener el entorno celular apropiado para el correcto desarrollo y supervivencia de los tejidos, aportando nutrientes, O2, y hormonas, al mismo tiempo que se retiran productos de desecho y CO2 (Guyton and Hall 2006b). Por tanto, el sistema circulatorio juega un papel fundamental en el mantenimiento de la homeostasis (Cannon 1929). Para cumplir esta misión, es fundamental mantener el flujo sanguíneo en todos los tejidos del organismo en función de las necesidades. El sistema circulatorio regula el flujo sanguíneo en todo el cuerpo mediante diversos mecanismos de feedback que modulan el gasto cardíaco (Q), la presión sanguínea y la distribución lo…
Medicīnisku attēlu aplūkošana volumetriskajā ekrānā
2021
Bakalaura darbs ir uzrakstīts latviešu valodā uz 33 lapaspusēm. Tas satur 23 attēlus, 1 tabulu un 49 atsauces uz literatūras avotiem. Mērķis bija noteikt kā tiek meklēta informācija medicīniskos attēlos volumetriskajā daudzplakņu ekrānā. 24 pētījuma dalībnieku uzdevums bija atrast mērķa elementus daudzslāņu medicīniskos attēlos volumetriskajā daudzplakņu ekrānā un plakanā ekrāna monitorā. Pētījuma norises laikā tika noskaidroti uzdevuma izpildes laiks un pareizība, un raksturotas pielietotās attēlu izskatīšanas stratēģijas. Pētījumā tika noteikts, ka ātrāk uzdevums ir izpildāms volumetriskajā daudzplakņu ekrānā, taču nav pierādāms, ka telpiskā attēla pagriešana dod būtiskus uzlabojumus uzde…
Kokemuksia vapaaehtoisesta lapsettomuudesta ja sterilisaatiosta -kirjoitusaineisto 2017
2022
Aineisto koostuu vapaaehtoista lapsettomuutta ja sterilisaatiota käsittelevistä kirjoituksista. Kirjoituspyyntöön saivat vastata kaikki itsensä kohderyhmään kuuluvaksi määrittelevät henkilöt. Aineisto on kerätty alun perin pro gradu -tutkielmaan vuonna 2017. Kirjoituskutsun avulla pyrittiin selvittämään mm. sitä, miten päätös vapaaehtoisesta lapsettomuudesta on syntynyt ja millaisia ajatuksia sterilisaatio vastaajissa herättää. Tarkoitus oli saada tietoa myös siitä, miksi sterilisaatioon hakeudutaan ja millaisia vaikutuksia toimenpiteellä on ollut vapaaehtoisesti lapsettomien ihmisten elämään. Haluttiin myös tietää, millaisena tilanteen näkevät ne, jotka toivoisivat toimenpidettä, mutta eiv…
Anticipatory Postural Adjustments and kinematic arm features when postural stability is manipulated
2018
International audience; Beyond the classical paradigm that presents the Anticipatory Postural Adjustments (APAs) as a manner to create forces that counteract disturbances arising from the moving segment during a pointing task, there is a controversial discussion about the role APAs to facilitate the movement and perform a task accurately. In addition, arm kinematics features are classically used to infer the content of motor planning for the execution and the control of arm movements, The present study aimed to disentangle the conflicting role of APAs during an arm-pointing task in which the subjects reach a central diode that suddenly turns on, while their postural stability was manipulate…
Voluntary Private Investments Role in Pension System in Latvia
2021
Pension systems have become one of the main priorities for the national governments. Developed countries population is getting older by putting the pressure on the state budgets and work age people tax load. The current pension system in Latvia performs according to regulation of state compulsory unfunded pension scheme since 1996 and regulation of the state funded or accumulated pension scheme since 2001. The third pension system pillar is private voluntary pension schemes realized in form of people contributions into pension funds and life insurance policies. Aim of the research – deeper analyses of voluntary private investments as the pension system part and its development challenges in…
De la perception de la voyelle /y/ chez des apprenants polonais du français langue étrangère
2019
International audience; The main objective of this study is to test the perception of the vowel /y/ among the Polish learners of FLE, as it does not exist in their natural vowel system. We defend the hypothesis that optimal perception conditions can make the identification and acquisition of new sounds more intelligible.; L'objectif principal de cette étude est de tester la perception de la voyelle /y/ chez des apprenants polonais du FLE, celle-ci n'existant pas, en effet, dans leur système vocalique naturel. Nous défendons l'hypothèse selon laquelle des conditions de perception optimales peuvent rendre plus nettes, plus intelligibles, la perception et l'acquisition de sons nouveaux.