Search results for "RESISTANCE"
showing 10 items of 3641 documents
GaN and SiC Device Characterization by a Dedicated Embedded Measurement System
2023
This work proposes a comparison among GaN and SiC device main parameters measured with a dedicated and low-cost embedded system, employing an STM32 microcontroller designed to the purpose. The system has the advantage to avoid the use of expensive laboratory measurement equipment to test the devices, allowing to obtain their behavior in operating conditions. The following KPIs (Key Performance Indicators) are measured and critically compared: threshold voltage, on-resistance and input capacitance. All the measurements are carried out in a short time interval and on a wide range of switching frequencies, ranging from 10 kHz to 1 MHz. This investigation is focused on the deviation of the figu…
Calcestruzzo autocompattante siciliano: un'esperienza con il filler vulcanico dell'Etna
2009
Self compacting concrete is one of the last developments in the technology of concrete, being studied and improved from the first '70es. Its production is connected with the use of fillers, most of which coming from iron metallurgy, scarsely present on Sicilian territory. So, the aim of the risearch was to realize self compacting concrete using exclusively local filler, particularly the Etna ashes with a strong pozzolanic connotation, pointing out the use of useless at the moment natural resource. The study relates to the verification of the more appropriate mix-designs and the tests on compressive strength of specimens to early curing and after 28 days. Different characterization tests wer…
Incidence of DAA failure and the clinical impact of retreatment in real-life patients treated in the advanced stage of liver disease: Interim evaluat…
2017
Background: Few data are available on the virological and clinical outcomes of advanced liver disease patients retreated after first-line DAA failure. Aim: To evaluate DAA failure incidence and the retreatment clinical impact in patients treated in the advanced liver disease stage. Methods: Data on HCV genotype, liver disease severity, and first and second line DAA regimens were prospectively collected in consecutive patients who reached the 12-week post-treatment and retreatment evaluations from January 2015 to December 2016 in 23 of the PITER network centers. Results: Among 3,830 patients with advanced fibrosis (F3) or cirrhosis, 139 (3.6%) failed to achieve SVR. Genotype 3, bilirubin lev…
Effect of simvastatin and/or pioglitazone on insulin resistance, insulin secretion, adiponectin, and proinsulin levels in nondiabetic patients at car…
2007
We investigated the effect of pioglitazone in comparison with and in combination with simvastatin on insulin resistance, plasma adiponectin, postprandial plasma glucose, insulin, and intact proinsulin levels in a nondiabetic population at cardiovascular risk. One hundred twenty-five nondiabetic patients at cardiovascular risk were randomized to pioglitazone (PIO), pioglitazone and simvastatin (PIO/SIM), or simvastatin (SIM) treatments. Blood samples were taken for the measurement of adiponectin and lipid levels. In addition, an oral glucose load with the measurements of glucose, insulin, and intact proinsulin levels was performed. Adiponectin levels increased from 14.0 ± 8.2 to 27.6 ± 14.5 …
Resisting within the neoliberalising academy: reflections on doing transformative doctoral research
2020
This paper reflects on the authors' experiences in doing transformative research in two countries of South East Europe - Greece and Bosnia and Herzegovina, during their doctoral studies abroad – United Kingdom and Finland. Within the neoliberal context of academia which celebrates ‘success stories’, research committed to change and action may not always be welcomed and may even be considered as a pathway to ‘failure’. Reflecting on this type of 'failure' and 'opportunity' through our personal stories, we debate how we can resist neoliberalisation in academia from within and promote an anti-oppressive and empowering place of hope and change. peerReviewed
Internalization of conflict and attitude change
1995
In a 2 × 2 × 2 design, eighty smokers were exposed to an anti-smoking appeal attributed either to an expert source (superior status) or a minority source (inferior status). Subjects were either allowed or not to smoke during the experiment. In addition subjects had to memorize part of the appeal and a recall task either followed after reading the appeal (completed task) or not (uncompleted task). The results show that the expert source produces more attitude change than the minority when the tension induced by the source is weakened (either by the opportunity to smoke or task completion). In contrast the minority has more impact when subjects are not able to smoke or when the task is not co…
Finnish Military Officer Identities and Micro-Political Resistance
2021
Drawing on the concept of micro-political resistance, this article presents an empirical analysis of how officers of the Finnish Defence Forces challenge, resist, and reinforce the collective military identities constructed within the prevailing organizational discourses. There is a need for identity work to meet the norms and ideals of the military, but individuals can also work as change agents. Micro-political resistance derives from feelings of otherness as well as conflict between the dominant organizational identities and individuals’ personal interests. This study presents a thematic discourse analysis based on texts written by 108 officers and 12 interviews on the theme of “the ide…
Differential copper impact on density, diversity and resistance of adapted culturable bacterial populations according to soil organic status
2010
International audience; The effect of copper on the abundance, diversity and resistance of viable heterotrophic and copper resistant bacterial populations (CuR) was evaluated in soils differing only by their amount and type of organic matter. These soils have been obtained using a vineyard soil that had been subjected to three different organic matter managements (Not Amended (NA) or amended with Straw (S) or Conifer Compost (CC)) in a long term field experiment. Soil microcosms were artificially contaminated with copper (250 mg Cu kg−1 of soil) and incubated for 35 days. Throughout the incubation, a differential copper impact on viable heterotrophic and CuR bacterial enumeration was demons…
Multivariate geostatistics for assessing and predicting soil compaction
2005
The aim of this research is to investigate the potential of geostatistical techniques for understanding and evaluating the spatial variability of soil compaction, caused by the traffic of agricultural machines and/or the action of tillage implements. Soil cone penetrometer resistance was measured in a field of inland Sicily, along a transect of 3 m length, from the soil surface until 70 cm depth. The 3D mean maps showed a random variation on the surface and a high spatial correlation among penetrometer resistance data measured at different depths. The map corresponding to five tractor passes showed the largest extension of the areas characterised by the highest values of penetrometer resist…
Response of cybrids and a somatic hybrid of lemon to Phoma tracheiphila infections
2000
The reaction of lemon hybrids obtained by symmetrical and asymmetrical protoplast fusion, toward “mal secco” infection caused by Phoma tracheiphila (Petri) Kanc. et Ghik. was examined. Resistance was tested in `Valencia' sweet orange [Citrus sinensis (L.) Osbeck] and `Femminello' lemon [C. limon (L.) Burm. f.] somatic hybrid and cybrids, by stem and leaf inoculation tests and by analysis of propagule number of P. tracheiphila in the xylem of stem-inoculated plants. In general, the somatic hybrid and the cybrids showed an intermediate degree of resistance, with slight differences in disease symptoms, in comparison with resistant `Monachello' lemon and susceptible `Femminello' lemon, used as …