Search results for "MORPHOLOGY"
showing 10 items of 1425 documents
Valoda: nozīme un forma, 6: Valodas sistēma un lietojums
2015
Rakstu krājums „Valoda: nozīme un forma. 6. Valodas sistēma un lietojums” ir Latvijas Universitātes Humanitāro zinātņu fakultātes Latviešu un vispārīgās valodniecības katedras (sadarbībā ar Baltu valodniecības katedru) 2014. gada 20. un 21. martā rīkotās 50. profesora Artura Ozola dienas starptautiskās zinātniskās konferences „Vispārīgā valodniecība: valodas sistēma un lietojums” referātu apkopojums.
Preparation of polymeric foams with a pore size gradient via Thermally Induced Phase Separation (TIPS)
2015
Abstract Foams with a pore size gradient are promising materials for tissue engineering applications where a complex architecture involving morphological variations in space must be mimicked, e.g. in bone tissue repair. In this paper, a technique to obtain a porous scaffold with a pore size gradient is presented. The preparation procedure is based on Thermally Induced Phase Separation (TIPS), by imposing a different thermal history on the two sides of a polymeric solution. In this way, a gradient in thermal history is produced, which will generate a pore size monotonously varying along scaffold thickness. By controlling some parameters easy to manipulate, such as demixing temperature and/or…
L’audition chez les primates : entre forme, fonction, écologie et comportement
2019
The order Primates is composed of species whose morphologies, life history traits and behaviors are very diversified. The oldest representatives are dated about 65 million years. Because of this diversity, studies have focused on understanding the relationships between different parameters. Among the morphological structures studied, the basicranium, in particular the characters of the ear, have very often been considered in a phylogenetic perspective. Since the development of new acquisition techniques such as micro-tomography (μCT), new data are available. Thus, the interest for the morphology of the inner and middle ear, hitherto difficult to access, is growing. The structures of the ear…
Polisemia e slittamenti semantici nei concetti ANIMA e CORPO nel mondo occidentale, ovvero l'Errore di San Paolo
2006
Storicamente il cristianesimo deve molto al giudaismo. Il cristianesimo di San Paolo, tuttavia, ha cambiato il modo di ragionare su concetti come il sé, il corpo, e la cognizione umana. Senza volere trattare certi concetti teologici, mi prefiggo di sottolineare come il punto di vista della scienza moderna è più vicino al giudaismo tradizionale che al cristianesimo, e di spiegare la diffusione dell’“errore” di Paolo nel mondo occidentale, analizzando la semantica dei riferimenti linguistici (e in particolar modo le metafore e le metonimie) dei concetti anima e corpo e del rapporto con la concezione del sé. Cresciuto da “uomo franco” cioè, da cittadino romano in un ambiente cosmopolita, Paolo…
Identification of Synaptic Integration Mode in CA3 Pyramidal Neuron Model
2019
International audience; A morphologically realistic and anisotropic model of CA3 pyramidal neuron was developed to determine the synaptic integration modes the neuron is able to perform. Linearity and nonlinearity were identified in different synaptic locations with varying active mechanisms such as the presence of ionic channels in the dendritic arbor and the types of receptors in the synapse. Quantification of synaptic integration was performed using paired-pulse stimulation protocol and subthreshold input/output (sI/O) transformation. Results show that the mode of synaptic integration is location-dependent while the linearity or nonlinearity in the integration is mainly influenced by the…
Effect of ageing on the morphology and creep and recovery of polymer-modified bitumens
2018
Polymer additives are used to improve the properties of road bitumens including their oxidative resistance. However, their usage as anti-oxidative materials remains relatively unclear. This study aims to investigate the changes in the morphology and the rheological response of polymer modified bitumens used in road pavement construction caused by ageing. An elastomer (radial styrene butadiene styrene, SBS) and a plastomer (ethyl vinyl acetate, EVA) polymer were mixed with one base bitumen at three polymer concentrations. The bitumens were RTFO and PAV aged. The morphology of the bitumens was captured by fluorescence microscopy while the rheological properties were measured by means of the m…
Redescription and phylogenetic analysis of the type species of the genus Panagrellus Thorne, 1938 (Rhabditida, Panagrolaimidae), P. pycnus Thorne, 19…
2021
Abstract The identity of Panagrellus pycnus, the type species of the genus Panagrellus, is discussed after studying specimens from a cultured population collected in Italy that fits the original material of the species. A new characterization is consequently provided as follows: body 0.93–1.32 mm long, lip region continuous with the adjoining body, stoma with gymnostom very reduced, pharynx with not swollen metacorpus, neck 161–203 µm long, excretory pore at level of the metacorpus, post-vulval uterine sac 99–162 µm long or 2.6–3.8 times as long as the body diameter divided in a short tubular proximal part and a long swollen distal part, vulva post-equatorial (V = 63–69), female tail conica…
Zoology and Animal Ecology: Abstract book : 25 January 2023, Nature House University of Latvia, Riga, Latvia
2023
The Zoology and Animal Ecology section of the conference covers a broad range of topics, ranging from the distribution of animal species and the different aspects of species' interactions with the environment to animal genetics and physiology, including behaviour, conservation and other topics where study objects are animals.
Morphology, mechanical properties and thermal degradation kinetics of PMMA-zirconia nanocomposites prepared by melt compounding
2012
Zirconia nanoparticles were synthesized by means of a sol-gel method and embedded in poly(methyl methacrylate) (PMMA) by melt compounding. The zirconia was well dispersed in the PMMA matrix, with only a few clusters, especially for the highest investigated zirconia content. NMR results showed heteronuclear dipolar interactions involving the carbons and the surrounding hydrogen nuclei. The effect of the amount of zirconia, in the range of 1–5!wt%, on the thermomechanical properties and thermal degradation kinetics of PMMA was also investigated by means of dynamic mechanical analysis (DMA), thermogravimetric analyses (TGA), and Fourier-transform infrared spectroscopy (FTIR). The presenc…
Salikteņu lietojums korporatīvās atbildības ziņojumos
2018
Šī pētījuma mērķis ir noskaidrot, kāda salikteņu forma un funkcija ir visbiežāk izmantota korporatīvās atbildības ziņojumos. Analīzei tika izvēlēti trīs korporatīvās atbildības ziņojumi banku nozarē. Izmantotā empīriskā pētījuma metode bija biežuma analīze, un analīze tika balstīta uz Bauera (1983), Levija (1998) un Liebera (2009) teorijām. Pētījuma rezultāti liecina, ka katram analizētajam korporatīvās atbildības ziņojumam ir sava visbiežāk lietotā salikteņu forma. Visvairāk lietotais saliktenis visos analizētajos korporatīvās atbildības ziņojumos ir salikts lietvārds, un vismazāk lietoti ir saliktie darbības vārdi un apstākļa vārdi. Analīze arī parāda, ka lielākā salikteņu daļa ir saistīt…