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Wyszukujesz frazę "fluctuating asymmetry" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Bilateral dentoalveolar asymmetries in female patients with adolescent idiopathic scoliosis
Autorzy:
Lewandowska, Joanna
Opydo-Szymaczek, Justyna
Mehr, Katarzyna
Głowacki, Jakub
Powiązania:
https://bibliotekanauki.pl/articles/306733.pdf
Data publikacji:
2019
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
uzębienie
skolioza idiopatyczna
asymetria
dentoalveolar asymmetries
idiopathic scoliosis
fluctuating asymmetry
directional asymmetry
Opis:
The aim of this cross-sectional research was to quantify left–right dentoalveolar fluctuating (FA) and directional asymmetries (DA) in patients with adolescent idiopathic scoliosis and to assess the relationship between these asymmetries and the side, location, and severity of scoliosis. Materials and methods: The study group comprised of 60 females aged 12–16 years, with idiopathic scoliosis, and 54 healthy controls. Measurements were made with the use of digital caliper on full-mouth dental casts. The following variables were measured from each subject: a shift of the incisor midline, left and right incisor overjet, deviation of canine and buccal segment relation as well as maxillary and mandibular arch chords. The data were statistically analyzed with significance taken as p < 0.05. Results: Statistically significant differences in the mean shift of the incisor midline, buccal segment relation on the left and canine deviation on the left between the control group and the study group were detected ( p = 0.0419, p = 0.0.458 and p = 0.0204, respectively). FA of the midline deviation and canine deviation were statistically significantly higher for subjects with IS, compared to healthy controls ( p = 0.0315 and p = 0.0415, respectively). Neither direction of the curve nor apical vertebra’s location or apical translation significantly affected the magnitude of dentoalveolar asymmetries. Conclusions: Our results confirmed that bilateral asymmetries are a common feature of the young females’ occlusion. Individuals with IS show higher tendency to Angle Class II malocclusion, as well as higher FA of incisor midline discrepancy and canine deviation, compared to the controls.
Źródło:
Acta of Bioengineering and Biomechanics; 2019, 21, 4; 53-62
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Problem of Monitoring the Atmospheric Air of Russian Metropolises on the Example of the Green Zones of St. Petersburg
Autorzy:
Glum, Tikhon
Menshikov, Stepan
Smirnov, Yurii
Powiązania:
https://bibliotekanauki.pl/articles/2025437.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
urban area
urban ecosystem
biomonitoring
monitoring
atmospheric pollution
metropolitan area
fluctuating asymmetry
park
Opis:
The article studies the problem of assessing the quality of atmospheric air in the green areas of the metropolis. The aim of the work is to compare the data obtained by the biomonitoring method with information from unified state environmental monitoring system (USEMS). The sample object of the study is a Udelny park located in the Primorsky district of the city of St. Petersburg. The objectives of the study include the analysis of atmospheric pollution of the Udelny Park by the method of bioindication, comparison of the data obtained with the general telephone indicators, as well as with information from the nearest USEMS posts. When studying the object, the method of V.M. Zakharov was used to study the fluctuating asymmetry of the leaf plates of the hanging birch (Betula pendula Roth.). The site between Udelny Ave., the Vyborg railway line, Testers Ave. and Kolomyazhsky Ave. with an approximate area of 18 hectares was chosen as a model site. The assessment was carried out on 12 pickets, at each 100 samples of leaf plates were taken in total. For comparison, data were obtained from a stationary observation post for the state of atmospheric air pollution, information on the content of pollutants in the air of the Primorsky district. The study found that the quality of atmospheric air in the territory is low. In part of the pickets, the value of the fluctuating asymmetry index was more than 0.054, which corresponds to the V score (critical pollution). These data are generally correlated with information about air pollution in St. Petersburg. Nevertheless, the state of the environment is assessed by the chosen method more critically. This is due to the fact that the biomonitoring method studies pollution from the point of view of direct impact on the ecosystem, taking into account, among other things, the cumulative effect. The result makes us to conclude that it is more correct to use an integrated approach, combining both methods, to assess the stability of urban ecosystems and the quality of the environment in them. It is important to separate information about the quality of the atmosphere in green areas from general data on residential areas.
Źródło:
Journal of Ecological Engineering; 2022, 23, 1; 110-117
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Can fluctuating asymmetry in Talitrus saltator (Montagu, 1808) (Crustacea, Amphipoda) populations be used as a bioindicator of stress on sandy beach ecosystems?
Autorzy:
Ottaviano, O.
Scapini, F.
Powiązania:
https://bibliotekanauki.pl/articles/49081.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
Amphipoda
Talitrus saltator
Crustacea
population
bioindicator
development
fluctuating asymmetry
sandy beach
Tuscan beach
Sicilian beach
tourism
sexual dimorphism
Opis:
This study focused on verifying the fluctuating asymmetry hypothesis in the crustacean Talitrus saltator, which lives in sandy beaches. We analysed three populations, one from an unpolluted Tuscan beach relatively free of tourism, and two from Sicilian beaches, which have been increasingly used for tourism and have been exposed to hydrocarbon/pesticide pollution. Results confirmed the sexual dimorphism in the second antennae flagella, which in the Tuscan population presented directional asymmetry. This population had a significant level of fluctuating asymmetry in the P6 and P3 meri. The results showed the importance of the developmental stage during which environmental mechanical stresses act.
Źródło:
Oceanologia; 2010, 52, 2; 259-280
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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