scholarly journals Frequency of Dental Caries in Four Historical Populations from the Chalcolithic to the Middle Ages

2011 ◽  
Vol 2011 ◽  
pp. 1-7 ◽  
Author(s):  
A.-M. Grimoud ◽  
S. Lucas ◽  
A. Sevin ◽  
P. Georges ◽  
O. Passarrius ◽  
...  

The majority of dental carie studies over the course of historical period underline mainly the prevalence evolution, the role of carbohydrates consumption and the impact of access to dietary resources. The purpose of the present investigation was to compare population samples from two archaeological periods the Chacolithic and Middle Age taking into account the geographical and socio economical situation. The study concerned four archaelogical sites in south west France and population samples an inlander for the Chalcolithic Age, an inlander, an costal and urban for the Middle Age. The materials studied included a total of 127 maxillaries, 103 mandibles and 3316 teeth. Data recorded allowed us to display that the Chalcolithic population sample had the lowest carie percentage and the rural inlander population samples of Middle Age the highest; in all cases molars were teeth most often affected. These ones differences could be explained according to time period, carious lesions were usually less recorded in the Chalcolithic Age than the Middle because of a lesser cultivation of cereals like in les Treilles Chacolithic population sample. In the Middle Age population samples, the rural inland sample Marsan showed the highest frequency of caries and ate more cereal than the coastal Vilarnau and the poor urban St Michel population samples, the first one ate fish and Mediterranean vegetal and fruits and the second one met difficulties to food access, in both cases the consumption of carbohydrates was lesser than Marsan population sample who lived in a geographical land convice to cereals cultivation.

Author(s):  
Katarzyna Tomaszek ◽  
Agnieszka Muchacka-Cymerman

Most previous research has examined the relationship between FB addiction and burnout level by conducting cross-sectional studies. Little is known about the impact of changes in burnout on FB addiction in an educational context. Through a two-way longitudinal survey of a student population sample (N = 115), this study examined the influence of changes in academic burnout over time and FB motives and importance (measured at the beginning and the end of the semester) on FB intrusion measured at the end of the academic semester. The findings show that: (1) increases in cynicism and in FB motives and importance significantly predicted time2 FB intrusion; (2) FB importance enhanced the prediction power of changes in the academic burnout total score, exhaustion and personal inefficacy, and reduced the regression coefficient of changes in cynicism; (3) the interaction effects between FB social motive use and changes in academic burnout, as well as between FB importance and personal inefficacy and exhaustion, accounted for a significant change in the explained variance of time2 FB intrusion. About 20–30% of the variance in time2 FB intrusion was explained by all the examined variables and by the interactions between them. The results suggest that changes in academic burnout and FB motives and importance are suppressive variables, as including these variables in the regression model all together changed the significance of the relationship between independent variables and FB intrusion.


PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e8365 ◽  
Author(s):  
Yanfang Peng ◽  
Qin Zhu ◽  
Biye Wang ◽  
Jie Ren

Background Working memory updating (WMU), a controlled process to continuously adapt to the changing task demand and environment, is crucial for cognitive executive function. Although previous studies have shown that the elderly were more susceptible to cognitive interference than the youngsters, the picture of age-related deterioration of WMU is incomplete due to lack of study on people at their middle ages. Thus, the present study investigated the impact of age on the WMU among adults by a cross-sectional design to verify whether inefficiency interference control accounts for the aging of WMU. Methods In total, 112 healthy adults were recruited for this study; 28 old adults (21 female) ranging from 60 to 78 years of age; 28 middle-age adults (25 female) ranging from 45 to 59 years of age; 28 adults (11 female) ranging from 26 to 44 years of age; and 28 young adults (26 female) ranging from 18 to 25 years of age. Each participant completed a 1-back task. The inverse efficiency score was calculated in various sequences of three trials in a row to quantify the performance of WMU for adults of various ages. Results Inverse efficiency score of both young groups (young adult and adult) were significantly shorter than the old group in both Repeat-Alternate (RA, including □□○ and ○○□) and Alternate-Alternate (AA, including ○□○ and □○□) sequential patterns and they were additionally better than the middle-age group in AA sequential pattern. Conclusion With the increase of difficulty in the task, the difference in reactive interference control between young and middle age was gradually revealed, while the difference between young and old remained to apparent. The degradation of WMU aging may begin from middle-age and presents selective impairment in that only reactive interference control, but not proactive interference control, shows pronounced age-related decline. The preliminary results can inform future studies to further explore the whole lifespan trajectories of cognitive functions.


2019 ◽  
Vol IV (III) ◽  
pp. 188-196
Author(s):  
Ihtesham Khan ◽  
Muhammad Ilyas ◽  
Shehzad Khan

Financial crisis shows the ambiguous role of the corporate governance system. Hence, the main purpose of this paper is to assess the impact of corporate governance on Non-performing loans of the banking industry of Pakistan. The time period selected from 2006 to 2016 and source of data is annual reports of respective banks and the World Bank. In order to explain the relationship between the governance system and non-performing loans used descriptive, correlational and panel data analyses. The results revealed a negative and significant effect of corporate governance on nonperforming loans of sample firms of the study. Therefore, suggested for the banking industry of Pakistan to implement and make sure their reports according to corporate governance code compliance to control non-performing loans.


2019 ◽  
Vol 34 (81) ◽  
pp. 23-38
Author(s):  
Gábor Attila Csúr

Gábor Attila Csúr: “The Inclination to the Supernatural in the Middle Ages – A Critical Reading of Medieval Religiousness in Danish Historical Novels” The article focuses on Danish historical prose fiction from the last two centuries and analyzes how the phenomenon ‘medievalism’, i. e. the interpretation, reception and recreation of the Middle Age, has changed during this period. Stereotypes about medieval religious thought and belief and the role of the church have always been popular features of historical novels. By analyzing the depictions of religiousness, the article attempts to draw a line of development in understanding medieval culture and everyday life.


2007 ◽  
Vol 35 (3) ◽  
pp. 451-453 ◽  
Author(s):  
K.G. Jackson ◽  
C.K. Armah ◽  
A.M. Minihane

With increasing recognition of the pivotal role of vascular dysfunction in the progression of atherosclerosis, the vasculature has emerged as an important target for dietary therapies. Recent studies have indicated that chronic fatty acid manipulation alters vascular reactivity, when measured after an overnight fast. However, individuals spend a large proportion of the day in the postprandial (non-fasted) state. Several studies have shown that high fat meals can impair endothelial function within 3–4 h, a time period often associated with peak postprandial lipaemia. Although the impact of meal fatty acids on the magnitude and duration of the postprandial lipaemic response has been extensively studied, very little is known about their impact on vascular reactivity after a meal.


2019 ◽  
Vol 2 (2) ◽  
pp. 210-214
Author(s):  
Ana Petra Lazăr ◽  
Alexandru Vlasa ◽  
Bukhari Csilla ◽  
Buka Imola ◽  
Luminița Lazăr

AbstractIn the etiology of periodontal disease, dental caries act as a favoring factor. The purpose of our study was to evaluate the role of untreated or incorrectly treated carious lesions in the occurrence of pathological changes in the periodontal support. Material and methods: In order to evaluate the impact of the dental caries in the appearance of destructive lesions at the periodontal level, we examined 378 X-rays. The radiographies were selected based on the presence of approximal dental cavities, untreated or incorrectly treated and we appreciated the association of these factors with the presence and the level of bone resorption of the interdental septum. Results: On the 378 radiographies we examined, it was discovered the presence of 398 approximal carious lesions, of which 146 were associated with bone resorption. The examined radiographies permitted us to evaluate 1512 fillings inserted in second class cavities, of which 1103 were correctly done, and 309 were incorrect and associated with bone resorption phenomena. Incorrectly done restorations were associated with bone resorption phenomena due to the lack of contact with the adjacent tooth for 213 of these, and because of an inaccurate adaptation at the level of the gingival threshold for 96. Conclusions: The dentist has to pay a special attention to the approximal coronary restorations because these can favor the retention of bacterial plaque and, in most cases, can lead to bone loos in the alveolar ridge area.


Author(s):  
E. F. Kazakov ◽  
V. I. Krasikov

The article examines the role of the social ideal in history according to the evolution of the Perfect Person image. The Ideal is understood as the image of the appropriate that allows one to assess the things in existence and direction of its development. The pursuit of the Ideal, the essential intention of the person required for their incarnation is one of the driving forces of history. Every historical period constructs its own image of a perfect person and strives to get closer to this image. Ideas about the Perfect Man have been shaped throughout the whole human history, which reflects the permanent dissatisfaction that is inherent to human – dissatisfaction with himself and the world around, the lack of implementation of the essence in their existence, intention to gain their own deepest identity. The first Perfect Man was a Beast. In the prehistoric period it was the Outer Beast that had to be conquered, whereas in antiquity it was the Inner Beast. That was when the first identity crisis arose as a result of inadequate self-esteem ("man as the measure of all things"). The Perfect Man of the Middle Ages was God. The Beast now belonged to the inaccessible past, while God was in the unattainable eternal. This was the second identity crisis. In modern times the Perfect Man becomes a Man. The concept of perfection (as a real possibility) within a man becomes domineering. However, depriving a Man of metaphysics leads to the third identity crisis. In modern times the Perfect Man, increasingly, appears to be a Machine as a man devoid of human weaknesses with heightened human qualities. The analogy between human and machine leads to the fourth identity crisis. The New Perfect Man will be a man as a unique result of the development of all human culture, the synthesis of the unique and the universal.


Author(s):  
Sara De Martino

Since 2008, the year of the impact of the financial and economic crisis in Europe, many decisional processes have been subjected to a progressive re-nationalization tendency. The last reforms of EU Cohesion Policy have included some measures—the definition of the plans and the allocation process of the funds through national programmes and the thematic concentration—that are considered the expression of the centralization of powers and competencies that challenge the whole complex system of governance relations in Europe. These centralized trends impacted the territorial governance, the place-based approach to regional development, and the role of regions in policy making itself. This chapter aims to shed light on a specific historical period in which it has been experimented a declining support for territorial approaches in European policy making by presenting a complete definition of concept of territorial governance and by deeply discussing the theoretical framework in which regions have started to activate themselves and to participate to decisional processes at European level.


Author(s):  
MA Clarke ◽  
RJA Hooley ◽  
RJC Munday ◽  
LS Sealy ◽  
AM Tettenborn ◽  
...  

This chapter introduces the reader to commercial law. It first considers the nature of commercial law by focusing on the definitions offered by Roy Goode, Tony Weir, and G. Samuel. It then examines the function of commercial law and the historical development of commercial law, tracing its roots to the lex mercatoria (law merchant) of the Middle Ages. It also discusses various sources of commercial law such as contracts and national legislation, along with the role of equity in commercial law, public law in the commercial arena, the philosophy and concepts of commercial law, and the codification of commercial law. Finally, it assesses the challenges for commercial law in the twenty-first century and the impact of Brexit on English commercial law.


2020 ◽  
Vol 6 (2) ◽  
pp. 81
Author(s):  
Asad Khan ◽  
Muhammad Ibrahim Khan ◽  
Niaz Ahmed Bhutto

Despite the pivotal role of risk management very limited research is carry out on the issue of firm’s risk management capability and value creation. This study aims to analyze the impact of firms risk management capabilities on firm performance and cost. Using panel data technique a sample of 301 non financial firms was analyzed for the time period on five years starting from 2011 to 2015. We assert that effective risk capabilities have positive impact on all stakeholders. The effective risk management capabilities guarantee more resilience to exogenous and endogenous risks. Our findings will have a significant impact on existing literature, by extending the existing knowledge of firm’s risk management capabilities into the domain of diverse stakeholders and resources adjustment.


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