A long-term study of the relationship of third molars to changes in the mandibular dental arch

Author(s):  
Amin G. Ades ◽  
Donald R. Joondeph ◽  
Robert M. Little ◽  
Michael K. Chapko
2019 ◽  
pp. 54-78
Author(s):  
Yaroslav Tsytsiura

The article presents the results of a long-term study of the features of the phytocenology of agrophytocenoses of oil radish using different methods for assessing their condition and studying the tactics of the plant vitality strategy. A comprehensive assessment was made of the effect of changes in row spacing, seeding rates and fertilizer rates on the formation of various plant morphotypes, the variability of morphological characters and the general characteristics of plant viability. Three idiotypes of the plant oil radish were identified in a vertical study of agrophytocenosis, on the basis of which a detailed analysis of the variability of each group and a statistical assessment of the reliability of its existence were carried out. The features of the morphological integration of each tier are analyzed and its impact on the formation of the overall field productivity is evaluated. Based on the modular and vitality grouping, the effectiveness and feasibility of combining various options for plant density and fertilizer in the range of 30-90 kg of active substance per 1 ha were evaluated. Conclusions are drawn about the desired model of agrophytocenosis of oil radish based on the characteristics of its vital tactics and the goals of its growing. Grouping was carried out according to a variety of morphological traits of plants in the population and the possibilities of applying the basic patterns of phytocenology in their application to radish oilseed plants were evaluated. Through the use of regression analysis, the influence of climatic conditions on the formation of various morphological types of plants and the nature of the relationship of plants of oil radish in cenoses of various densities against the background of various fertilizer options has been evaluated. The main promising areas for further research on the peculiarities of creating highly productive and highly adaptable agrophytocenoses of oil radish have been outlined.


Urban Studies ◽  
2017 ◽  
Vol 55 (15) ◽  
pp. 3369-3384 ◽  
Author(s):  
Eva Kassens-Noor ◽  
John Lauermann

Planning for mega-events such as the Olympics is at a turning point. There has been a power shift in the relationship between cities and the International Olympic Committee towards the former. This shift is based on the emergence of anti-bid opposition movements; the increasing complexity of bidding; demands for locally relevant legacies; and a changing political economic relationship between citizens, city governments and sports federations. Our paper draws on a long-term study of Boston’s failed bid to host the 2024 Summer Olympics, based on an ethnography within the bidding corporation and interviews with pro- and anti-bid stakeholders. We lay out the reasons why the Boston bid failed, and conclude that bid failure involves factors that work against elitist powers and towards democratic beneficiaries.


Behaviour ◽  
1999 ◽  
Vol 136 (10-11) ◽  
pp. 1311-1323 ◽  
Author(s):  
Dimitri Giunchi ◽  
Natale Emilio Baldaccini ◽  
Emanuele Mongini

AbstractOver a period of 18 years sand martins (Riparia riparia) were displaced from their breeding colonies and released to investigate the relationship between distance of displacement and initial orientation. The results show significant homeward orientation at the shortest distances of displacement (7.1-18.2 km, series A), but not over longer distances (49-180 km, series B and C). Birds displaced over 49 km from their breeding colonies only seldom show homeward directedness, while pseudo-pooling and second order analysis of their directional choices seem to indicate the tendency to fly in a given compass direction. Possible causal factors that can induce this behaviour in sand martins are discussed, taking into account not only local biasing factors but also the existence of a so called preferred compass direction. These data show that sand martins are able to determine the correct homing direction inside a probably familiar area. The response over longer distances indicates difficulties in determining the appropriate homing course at takeoff.


2012 ◽  
Vol 61 (5) ◽  
pp. 532-537 ◽  
Author(s):  
K Inoue ◽  
Y Nishimura ◽  
Y Fujita ◽  
Y Ono ◽  
T Fukunaga

2020 ◽  
pp. 55-75
Author(s):  
Natalia B. Gramatchikova ◽  
Lidia V. Enina

The article is the result of a long-term study of autobiographies and memoirs from the Fund of the First Builders of Uralmash, collected in 1967-1984 and dedicated to the construction of the plant (1926-1934). The question of the role of spatial and temporal markers in the construction of the collective identity of factory workers is considered. Particular attention is paid to the relationship between strong discursive practices and the “weak positions” of the official discourse, which allow authors to independently write their personal history into the history of the plant. The novelty of the research lies in the fact that the Foundation's documents are viewed not as a factual source, but as a way of creating collective and personal identity of factory workers in the process of forming the concept of the FIRST BUILDER and as a body of texts, which reflects the practice of constructing the “Soviet”. It is emphasized that a special perception of space (the plant and the social city of Uralmash) and the placement of oneself in a certain historical era (with the opposition “then-now”) unite most of the Foundation's texts, among the authors of which are workers of the plant of different specialties and social status. It is proved that the texts have a common chronotope associated with the axiological picture of the world and with the practice of social communication through the text.


1993 ◽  
Vol 16 (6) ◽  
pp. 1034-1040 ◽  
Author(s):  
H. Schierbeek ◽  
G. J. J. Beukeveld ◽  
H. van Faassen ◽  
F. J. van Spronsen ◽  
K. Bijsterveld ◽  
...  

2009 ◽  
Vol 194 (4) ◽  
pp. 360-364 ◽  
Author(s):  
Charles E. Dean ◽  
Paul D. Thuras

BackgroundWhether the development of tardive dyskinesia leads to an increase in mortality is still unclear.AimsTo explore the relationship between tardive dyskinesia and mortality over a 10-year period, using the National Death Index.MethodDeath certificates were obtained from the National Death Index on 1621 people repeatedly assessed for tardive dyskinesia by trained raters. Variables with the potential for influencing survival time were also investigated.ResultsTardive dyskinesia was significantly associated with an increase in mortality (P<0.001), but this association became non-significant when drug course and age were entered in the regression analysis. Those who had taken only conventional antipsychotics were twice as likely to die compared with those taking atypical agents (P<0.02). For those aged 53–65 years, conventional agents were associated with a sevenfold increase in mortality.ConclusionsOlder individuals with tardive dyskinesia treated with conventional antipsychotics appear to have a shortened survival time.


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