Search results for "MOBILIZATION"
showing 10 items of 142 documents
L’engagement des chercheurs dans la vulgarisation scientifique
2012
International audience; Quelle attitude ont les chercheurs vis-à-vis de la vulgarisation scientifique ? Voilà une question que tout médiateur scientifique est amené à se poser. Elle intéresse aussi les gouvernements et les grandes institutions scientifiques qui incitent les chercheurs à communiquer auprès du grand public et cherchent des solutions pour améliorer cette communication.Nous avons recherché des études et des enquêtes qui, depuis 1992, auraient proposé des diagnostics sur l’attitude, l’intérêt et surtout l’engagement des chercheurs dans cette pratique de vulgarisation. Notre propos s’articulera autour d’une étude clé, publiée en 2007 par Ellen Poliakoff et Thomas L Webb qui s’int…
DNA-based applications in molecular electronics
2011
This thesis is mainly focused on DNA molecules and especially on self-assembled DNA constructs and their potential applications in nanotechnology and molecular electronics. In the field of molecular electronics the conductivity of DNA is a crucial - yet open - question, and it is of great concern, since DNA is a very promising molecule in a context of bottom-up based nanodevices due to its superior selfassembly characteristics. A key tool in all the experiments presented in this thesis is a dielectrophoretic trapping technique, which was exploited in spatial manipulation of individualDNA molecules, DNA constructs and also semiconducting quantum dots. In the case of DNA, the technique provid…
Sykepleieres erfaringer med tidlig mobilisering av intuberte intensivpasienter
2014
Masteroppgave i spesialsykepleie – Universitetet i Agder 2014 Background: Studies show that early mobilization of the intubated ICU patients brings positive benefits for the patient. Aim: To illuminate nurses’ experiences with early mobilization of intubated patients in the ICU. Method: It was conducted individual interviews with six intensive care nurses from an ICU in Denmark. The data was analyzed using a qualitative content analysis. Results: The analysis resulted in three categories "New mobilization routines", "Benefits" and "Challenges" with two subcategories each, "New mobilization guide" and "Utilities", "The benefits for the patient" and "Economic benefits" and "Challenges in the …
Nanodevices by DNA based gold nanostructures
2017
In this thesis DNA based structures were utilized to create gold nanostructures for nanosensing and nanoelectronic applications. In the past, both of these fields have been dominated by the conventional lithography methods, e.g., electron beam lithography and UV-lithography, but more recently scaling down the components by these techniques has become increasingly more complex and costly. Especially in the micro- and nanoelectronics, the increase in the component density and thus computational power would require fabrication of sub-10-nm components, which is challenging for the top-down approaches. Aforementioned developments have led researchers to seek alternative methods to fabricate these…
Biomimetic strategy towards gelatin coatings on PET. Effect of protocol on coating stability and cell-interactive properties
2019
Gelatin-modified poly(ethylene terephthalate) (PET) surfaces have been previously realized via an intermediate dopamine coating procedure that resulted in surfaces with superior haemocompatibility compared to unfunctionalized PET. The present study addresses the biocompatibility assessment of these coated PET surfaces. In this context, the stability of the gelatin coating upon exposure to physiological conditions and its cell-interactive properties were investigated. The proposed gelatin–dopamine-PET surfaces showed an increased protein coating stability up to 24 days and promoted the attachment and spreading of both endothelial cells (ECs) and smooth muscle cells (SMCs). In parallel, physi…
Optymalizacja procesu immobilizacji komórek Saccharomyces cerevisiae w żelu alginianowym
2016
Celem prezentowanych badań była ocena wpływu dwuwartościowych kationów wapnia, magnezu i baru, na zdolność sieciowania żelu alginianowego, stosowanego do unieruchamiania komórek Saccharomyces cerevisiae, oraz oznaczenie aktywności enzymatycznej dehydrogenazy bursztynianowej w immobilizowanych komórkach. Do immobilizacji komórek Saccharomyces cerevisiae wykorzystywano zawiesinę komórek drożdży w alginianie sodu, który następnie żelowano roztworami chlorku wapnia (2, 5, 10 i 30%), chlorku baru (1, 2, 3, 4 i 5%) oraz chlorku magnezu (5%). Aktywność dehydrogenazy bursztynianowej badano spektrofotometrycznie i mierzono za pomocą ilości zredukowanego błękitu metylenowego (sztuczny akceptor elektr…
Opracowanie metody oraz optymalizacja warunków immobilizacji inwertazy drożdżowej w żelu alginianowym
2016
Zbadano wpływ różnych stężeń chlorku wapnia oraz czasu kondycjonowania inwertazy drożdżowej (EC 3.2.1.26) izolowanej z drożdży piekarniczych Saccharomyces cerevisiae immobilizowanej w żelu alginianowym. Z wykorzystanych w badaniach różnych stężeń chlorku wapnia (2, 5, 10 i 30%) najwyższą aktywność enzymatyczną uzyskano dla najwyższego wykorzystanego stężenia. Wykazano, że czas 15 minut kondycjonowania żelu alginianowego w chlorku wapnia prowadzi do najefektywniejszego immobilizowania inwertazy. Dodatkowo oceniono wpływ immobilizacji inwertazy drożdżowej na jej aktywność w odniesieniu do wolnej formy tego enzymu w szerokim zakresie pH (3,5; 4,0; 4,5; 5,0; 5,5; 6,0; 6,5) oraz temperatury (21,…
Coupling of iron and dissolved organic matter in lakes–selective retention of different size fractions
2023
AbstractIncreasing concentration of iron (Fe) is observed in many boreal lakes, such as for the present study in Oslo Østmark, SE-Norway (1983–2018). As Fe-regulating processes are complex and dynamic, the link between mobilizing and retention processes is still not well understood. A seasonal study (2017–2018) from two headwaters, with medium and high dissolved organic matter (DOM) concentrations, showed that the loading of Fe to the lakes was highly dependent on flow conditions. Significantly higher values of Fe were related to autumn and winter periods with high runoff of highly colored and aromatic DOM compared to a severe drought period with minimum Fe values in the lakes. Compared to …
L’antimafia come risorsa politica
2019
In questo saggio si discute un momento particolare della storia dell’antimafia. Si tratta degli anni 1985-1994, che hanno come figura principale Leoluca Orlando, sindaco di Palermo. In quel periodo storico, per la prima volta, il discorso politico dell’antimafia viene fatto proprio da questo giovane leader della Democrazia cristiana. Il partito era stato al governo di Palermo e dell’Italia dal secondo dopoguerra senza porsi il problema della lotta alla mafia. Sin all’inizio del 1980, erano state le forze di opposizioni, in particolare il Partito comunista e i sindacati, a portare avanti la lotta antimafia. Con l’omicidio di Piersanti Mattarella, presidente della Regione siciliana, e poi di …
Data from: Lake size and fish diversity determine resource use and trophic position of a top predator in high-latitude lakes
2015
Prey preference of top predators and energy flow across habitat boundaries are of fundamental importance for structure and function of aquatic and terrestrial ecosystems, as they may have strong effects on production, species diversity, and food-web stability. In lakes, littoral and pelagic food-web compartments are typically coupled and controlled by generalist fish top predators. However, the extent and determinants of such coupling remains a topical area of ecological research and is largely unknown in oligotrophic high-latitude lakes. We analyzed food-web structure and resource use by a generalist top predator, the Arctic charr Salvelinus alpinus (L.), in 17 oligotrophic subarctic lakes…