Search results for "SLI"
showing 10 items of 1729 documents
Positron Annihilation in Metals Defected by Action of the Tensile Force
2006
Results of experimental investigations of uniaxially elongated mono- and polycrystalline samples of several metals (Fe, Ta, Pd, Ag, and Au), performed using the positron annihilation methods, are reviewed. The dependences of the S-parameters and positron lifetimes on the relative elongation of the samples were presented. The data obtained for polycrystalline samples indicate that in the proportionality and limited proportionality regions the changes in the physical properties are governed mainly by generation of vacancies and by kinetics of formation and transformations of vacancy clusters occurring flrst of all on the grain boundaries of monocrystallites. In the region of plastic deformati…
Ekstracelulāro vezīkulu efekti uz Pārkinsona slimības modeļa žurku telpisko iemācīšanos un atmiņu
2019
Šī darba mērķis bija noteikt intranazāli ievadīto ekstracelulāro vezīkulu (EV) efektus uz telpisko iemācīšanos un atmiņu žurku Pārkinsona slimības modelī, izmantojot Morris ŪL testu. Iegūtie resultāti rāda, ka EVs būtiski uzlaboja Pārkinsona slimības modeļžurku īslaicīgo telpisko iemācīšanos, bet ne telpisko atmiņu. Pie tam, EVs neietekmēja Pārkinsona slimības modeļžurku telpisko iemācīšanos/atmiņu divas nedēļās pēc to ievadīšanas beigām. Iegūtie dati demonstrē, ka subhronisko EV ievadīšan varētu uzskatīt par daudzsološu stratēģiju pirmo atmiņas traucējumu novēršanā Pārkinsona slimības modeļžurkām, taču ir jāoptimizē EV ievadīšanas ilgums.
Influence of heart rate in the selection of the optimal reconstruction phase in clinical routine multi-slice coronary angiography
2006
Right-turn Bypass Lanes at Roundabouts: Geometric Schemes and Functional Analysis
2012
Right-turn bypass lanes can be implemented in conventional and innovative roundabout intersections to increase the capacity and improve the global functional performances. The Right-turn bypass lanes (also called slip lanes) can be distinguished according to the planimetric layout and the entry control type (stop, yield slip or Free Flow acceleration lane). This paper presents a closed-form model for the estimation of capacity, delays and level of service of roundabout equipped with Right-turn bypass lanes, considering the effect of geometric slip lane schemes, control type, vehicular and pedestrian flow. In order to examine the traffic conditions which can benefit from slip lane roundabout…
Assessing and mapping multi-hazard risk susceptibility using a machine learning technique
2020
AbstractThe aim of the current study was to suggest a multi-hazard probability assessment in Fars Province, Shiraz City, and its four strategic watersheds. At first, we construct maps depicting the most effective factors on floods (12 factors), forest fires (10 factors), and landslides (10 factors), and used the Boruta algorithm to prioritize the impact of each respective factor on the occurrence of each hazard. Subsequently, flood, landslides, and forest fire susceptibility maps prepared using a Random Forest (RF) model in the R statistical software. Results indicate that 42.83% of the study area are not susceptible to any hazards, while 2.67% of the area is at risk of all three hazards. T…