Search results for "O2"
showing 10 items of 1115 documents
Er det sammenheng mellom oppvarmet CO2 gass, postoperative smerter og hypotermi ved laparaskopiske inngrep? : en kvantitativ undersøkelse
2016
Masteroppgave i spesialsykepleie – Universitetet i Agder 2016 Background: A common complication to laparoscopic procedures is postoperative shoulder pain. As a result of a surgical procedure, the patient is also exposed to hypothermia. There are various theories of the causes of postoperative shoulder pain and hypothermia. One of them suggest that the internal environment in the abdomen changes by insufflation of standard CO2 gas, and that this may result in peritoneal changes. Previous studies show that heated CO2 gas can reduce postoperative pain and hypothermia by laparoscopic surgery. Surgical and intensive patient is in a vulnerable situation, and the reflection on the operation and in…
Body Composition, Energy Availability, Training, and Menstrual Status in Female Runners.
2020
Purpose: To determine body composition, energy availability, training load, and menstrual status in young elite endurance running athletes (ATH) over 1 year, and in a secondary analysis, to investigate how these factors differ between nonrunning controls (CON), and amenorrheic (AME) and eumenorrheic (EUM) ATH. Correlations to injury, illness, and performance were also examined. Methods: Altogether 13 ATH and 8 CON completed the Low Energy Availability in Females Questionnaire. Anthropometric, energy intake, and peak oxygen uptake assessments were made at 4 time points throughout the year: at baseline post competition season, post general preparation, post specific preparation, and post comp…
A new simple chromo-fluorogenic probe for NO2 detection in air.
2015
[EN] A new chromo-fluorogenic probe, consisting of a biphenyl derivative containing both a silylbenzyl ether and a N,N-dimethylamino group, for NO2 detection in the gas phase has been developed. A clear colour change from colourless to yellow together with an emission quenching was observed when the probe reacted with NO2. A limit of detection to the naked eye of about 0.1 ppm was determined and the system was successfully applied to the detection of NO2 in realistic atmospheric conditions.
DFT insights into the oxygen-assisted selective oxidation of benzyl alcohol on manganese dioxide catalysts
2020
Abstract The reactivity pattern of the MnO2 catalyst in the selective aerobic oxidation of benzyl alcohol is assessed by density functional theory (DFT) analysis of adsorption energies and activation barriers on a model Mn4O8 cluster. DFT calculations predict high reactivity of defective Mn(IV) sites ruling a surface redox mechanism, L-H type, involving gas-phase oxygen. Bare and promoted (i.e., CeOx and FeOx) MnOx materials with high surface exposure of Mn(IV) sites were synthesized to assess kinetic and mechanistic issues of the selective aerobic oxidation of benzyl alcohol on real catalysts (T, 333–363 K). According to DFT predictions, the experimental study shows: i) comparable activity…
Effect of air on oxygen p-doped graphene on SiO2
2016
Stability in ambient air or in vacuum-controlled atmosphere of molecular oxygen-induced p-type doping of graphene monolayer on SiO2 substrate on Si is investigated by micro-Raman spectroscopy and atomic force microscopy (AFM). The Raman 2D and G bands spectral positions and amplitude ratio are affected by the permanence in air atmosphere in a time scale of months whereas the vacuum safely maintains the doping effects determined through Raman bands. No morphological effects are induced by the doping and post-doping treatments. A reactivity of ambient molecular gas with stably trapped oxygen is suggested to induce the doping modification. (C) 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
LEGAL CONSIDERATIONS REGARDING THE INTRODUCTION AND IMPLEMENT OF THE PROPOSED `FINANCIAL TRANSACTION TAX` ON PENSION FUNDS. IMPACT ON TRANSACTION COS…
2012
In economies in which pension obligations are substantial, it is important that there is a high degree of trust in the financial reporting of pensions by employers and by pension plans. The objective of this paper is to assess legal considerations regarding the introduction and implement of financial transaction tax mechanisms in private pension system. In line with this objective, an understanding of causes, implications, solutions for pensions is essential to being able to efficiently and effectively create a secure fiscal environment.
The Rise and Fall of the Oslo School
2007
In 1931 Ragnar Frisch became professor at the University of Oslo. By way of his research, a new study programme and new staff he created the ”Oslo School”, characterised by mathematical modelling, econometrics, economic planning and scepticism towards the market economy. Consequently, detailed state economic planning and governance dominated Norwegian economic policy for three decades after WWII. In the 1970s the School’s dominance came to an end when the belief in competitive markets gained a foothold and the economy had poor performance. As a result a decentralized market economy was reintroduced. However, mathematical modelling and econometrics remain in the core of most economic program…
Keski-Suomen maakunnan kasvihuonekaasupäästöt ja niiden kehitys 2000-luvulla
2010
Keski-Suomen maakuntahallitus on kansallisen ilmasto- ja energiastrategian mukaisesti käynnistänyt keväällä 2010 maakunnan ilmastostrategiatyön, jossa etsitään keinoja ilmastonmuutoksen hillintään ja ilmastonmuutokseen sopeutumiseen. Jotta tavoitteita ja toimenpiteitä voidaan näille asettaa, on tunnettava alueen nykytila ja hahmotettava meneillään oleva kehityssuunta. Tämän tutkimuksen tavoitteena oli selvittää Keski-Suomen maakunnan ihmisperäisten kasvihuonekaasupäästöjen nykyiset lähteet, päästöjen määrä ja niiden kehitys eri sektoreilla 2000-luvulla sekä arvioida päästöjen vähennyskeinoja. Keski-Suomessa syntyi kasvihuonekaasupäästöjä talouskasvun vuosina 2004 ja 2006 noin 3,0 miljoonaa …
Periodised Carbohydrate Intake Does Not Affect Substrate Oxidation but May Contribute to Endurance Capacity.
2021
The aim of this study was to investigate whether periodising carbohydrate intake around specific training sessions will enhance endurance training adaptations. Seventeen healthy recreationally endurance-trained males (n = 5) and females (n = 12) (27.5 ± 5.4 years) participated in a four-week training intervention. Participants were divided into two groups: FASTED (stayed fasted between evening high-intensity interval training session and low-intensity training session in the following morning) and FED (no restriction in food intake). Pre- and post-testing included peak oxygen uptake (VO2peak), anaerobic capacity, and 60 min submaximal running tests. Fasted venous blood samples were drawn fo…
Ogļskābās gāzes CO2 ietekme uz cilvēka kognitīvajām spējām
2020
Ogļskābā gāze (CO2) ir neredzama un nejūtama gāze, ar kuru cilvēki sastopas ikdienā gan iekštelpās, gan ārpus tām. Īpaša uzmanība ogļskābajai gāzei jāpievērš tieši iekštelpās, jo, vairākiem cilvēkiem atrodoties telpā vienlaikus, tās koncentrācija gaisā strauji pieaug. Pastāv aizdomas par CO2 ietekmi uz cilvēka kognitīvajām spējām. Līdzšinējie pētījumi norāda, ka ogļskābajai gāzei ir ietekme uz cilvēka kognitīvajām spējām. Tomēr pētījumu rezultāti ir dažādi. Dažos pētījumos šī ietekme ir negatīva, citos – pozitīva, vēl citos šī ietekme netiek novērota. Šī pētījuma mērķis ir noskaidrot, vai ogļskābā gāze ietekmē cilvēka kognitīvās spējas. Pētījumā piedalījās 34 dalībnieki, LU PPMF 2. psiholoģ…