Search results for "MORPHOLOGY"

Maksimālas zarnelpošanas iespaids uz Misgurnus fossilis zarnas anatomiju: eksperimentāls gala zarnas respiratoriskas funkcijas pierādījums

1924

Atsevišķs iespiedums no: Latvijas Universitātes Raksti, IX. 1924. Kopsavilkums angļu valodā.

On the metalanguage of the first Grammar of Aymara (1603)

This paper investigates the linguistic categories adopted by the Jesuit missionary Ludovico Bertonio in his early modern European description of the Andean language of Aymara. Like other missionary grammars in the Spanish colonial world, Bertonio’s linguistic work tends to impose traditional terms and classifications, familiar to Latin and Romance languages, to an indigenous language that is completely different in its typological structure from the IndoEuropean model and exhibits morphological and syntactic strategies that were entirely new at that time. Thus, in his description of noun declension, the missionary grammarian reduces the rich Aymara case system to only six case endings (caso…

Impact of mode of delivery on levator morphology

2012

Il sistema vivente: unità e modularità organica

2013

Discussione: Il sistema vivente: unità e modularità organica

Reactive blending of a functionalized polyethylene with a semiflexible liquid crystalline copolyester

1996

Reactive blends (50/50 w/w) of a low molar mass polyethylene containing free carboxylic groups (PEox) and a semiflexible liquid crystalline polyester (SBH 1 : 1 : 2, by Eniricerche) have been prepared at 240 degrees C in a Brabender mixer, in the presence of Ti(OBu)(4) catalyst, for different mixing times (15, 60, and 120 min). In order to prove the formation of a PE-g-SBH copolymer, the blends have been fractionated by successive extractions with boiling toluene and xylene. The soluble fractions and the residues have been analyzed by Fourier transform infrared (FTIR) spectroscopy, thermogravimetry (TG and DTG), differential scanning calorimetry (DSC), and scanning electron microscopy (SEM)…

Use of cone-beam computed tomography to evaluate root and canal morphology of mandibular first and second molars in Turkish individuals

2013

Objective: The aim of this study was to investigate the root and canal morphology of mandibular first and second molars in a Turkish population by using cone beam computed tomography (CBCT). Study design: CBCT images of mandibular first (n = 823) and second molar (n = 925) teeth from 605 Turkish patients were analyzed. The root canal configurations were classified according to the method of Vertucci. Results: The majority of mandibular molars (95.8% of first molars, 85.4% of second molars) had two separate roots; however, three roots were identified in 2.06% of first molars and 3.45% of second molars. C-shaped canals occurred 0.85% of first molars and 4.1% of second molars. Three canals wer…

Apical root canal transportation of different pathfinding systems and their effects on shaping ability of ProTaper Next

2015

Background: This study aimed to compare glide path preparation of different pathfinding systems and their effects on the apical transportation of ProTaper Next (Dentsply Maillefer, Ballaigues, Switzerland) in mesial root canals of extracted human mandibular molars, using digital subtraction radiography. Materials and Methods: The mesial canals of 40 mandibular first molars (with curvature angles between 25° and 35°) were selected for this study. The specimens were divided randomly into 4 groups with 10 canals each. Glide paths were created in group 1 with #10, #15 and #20 K-type (Dentsply Maillefer, Ballaigues, Switzerland) stainless steel manual files; in group 2 with Path-File (Dentsply M…

Evaluation of morphological changes produced by orifice opener systems using computerized tomography (CT)

2009

Objectives: To evaluate modifications in root canal morphology following instrumentation with orifice openers using Computerized Tomography (CT). Study design: Experimental in vitro study. A preoperative CT was performed on 49 molars to measure the root canal cross-sections. After preparing the canals with 6 different nickel-titanium (Ni-Ti) rotary system orifice opener type instruments and Gates Glidden burs, a further CT was made and compared with the preoperative one. Kruskal-Wallis and ANOVA statistical analysis were used. Results: Gates Glidden burs were significantly more aggressive in the coronal portion of the canals, although all the instruments removed more dental tissue in the mo…

Morphology Study of the Porosity of the GaP Surface Layer Formed on the Surface of a Single Crystal by Electrochemical Etching

2021

The article analyzes the morphological characteristics of a porous GaP surface layer formed on the surface of monocrystalline gallium phosphide by electrochemical etching. The correlations between the etching time and the appropriate size, shape and density of pores have been established and studied in detail.

Analysing disparity by applying combined morphological and molecular approaches to French and Japanese carabid beetles

2000

The expression of morphological disparity within a clade is related to its history and to the environmental parameters within which it develops. Recent developments in geometric morphometries allow quantitative estimation of morphological disparity, and facilitate comparisons with genetic data intended to provide phylogenetic information. Such comparisons were made between two sets of ground beetle species from regions that differ biogeographically and environmentally: 12 post-glacial reinvading species from NE France; and 15 Japanese species less likely to be affected by the Pleistocene glacial events. Genetic relationships were inferred from mitochondrial DNA (ND5 gene). Morphological div…