A new approach to reliability assessment of dental caries examinations

2012 ◽  
Vol 41 (4) ◽  
pp. 309-316 ◽  
Author(s):  
Yacoub Altarakemah ◽  
Mona Al-Sane ◽  
Sungwoo Lim ◽  
Albert Kingman ◽  
Amid I. Ismail
2021 ◽  
Vol 16 (6) ◽  
pp. 1934578X2110196
Author(s):  
Zheng Liu ◽  
Lihua Zhang ◽  
Jincai Wang ◽  
Yanping Li ◽  
Yiqun Chang ◽  
...  

Biofilm formation is considered as a crucial factor in various oral diseases, such as dental caries. The quorum sensing (QS) signaling system was proved to have a crucial role in the microbial dental plaque biofilm formation of Streptococcus mutans ( S. mutans). LuxS was critical to regulating the QS system and survival of the bacterium, and, therefore, compounds which target LuxS may be a potential therapy for dental caries. The binding activities of 37,170 natural compounds to LuxS were virtually screened in this study. Baicalein and paeonol were chosen for further research of the binding mode and ΔG values with LuxS. Both baicalein and paeonol inhibited the biofilm formation without influence on the growth of S. mutans. Baicalein also distinctly reduced the production of both rhamnolipids and acids. The results provide us with a new approach to combat dental caries instead of the traditional use of antibacterial chemicals.


2007 ◽  
Vol 15 (6) ◽  
pp. 480-485 ◽  
Author(s):  
Andréa Videira Assaf ◽  
Elaine Pereira da Silva Tagliaferro ◽  
Marcelo de Castro Meneghim ◽  
Cristiana Tengan ◽  
Antonio Carlos Pereira ◽  
...  

2020 ◽  
Vol 11 (5) ◽  
pp. 4415-4426
Author(s):  
Younes Seyedi ◽  
Houshang Karimi ◽  
Constant Wette ◽  
Brunilde Sanso

2020 ◽  
Vol 14 (1) ◽  
pp. 217-227
Author(s):  
Palash Dutta ◽  
Nisha Gohain

Aim: To devise an effective structural failure analysis approach under uncertainty. Background: In reliability evaluation, plenty of factors are uncertain, or sometimes, spontaneously represented via linguistic expressions, and as a consequence, the traditionalist appraisal methods cannot capably handle the ambiguity and vagueness that occurs in reliability assessment components. Subsequently, this leads to the problem of tremendous computationally multifaceted and scanty correctness. Objective: To overcome the limitations and to develop efficiency as well as accuracy in structural failure evaluation techniques, an attempt has been made to devise a novel structural reliability assessment method via credibility distribution. Methods: To get rid of the problems of massive computationally difficult and inadequate precision, an algorithm has been devised using credibility sampling. To exhibit the novelty, validity, and applicability of the present approach, some structural failure assessment problems are solved along with a comparison with the existing approach. Results: The proposed method was verified by four examples and applied in structural analysis. It was observed that the present approach is technically sound and efficient; it can overcome all the drawbacks of the existing approach. Moreover, the approach can be executed in any uncertain situation. Conclusion: After evaluation of failure assessment, it is experienced that the increase in the number of simulations leads to better precision. Furthermore, it is encountered that when hybridization problems i.e., representation of imprecise components in the problem of structural failure, are both fuzzy and probabilistic nature, then the failure assessment is attained to be maximum.


Author(s):  
Yi Xiao-jian ◽  
Lu Ming-chao ◽  
Mu Hui-na ◽  
Shi Jian ◽  
Hou Peng

This paper presents a new reliability assessment method for complex nuclear power equipment based on Goal Oriented (GO) method to evaluate Mean Time To Failures (MTTF). First, the new reliability assessment method is expounded in detail. And its process is formulated. Then, the electronic control system of hoisting mechanism in nuclear power plant is taken as an example to evaluate its MTTF by the new method. The reliability assessment processes are mainly as follows: (i) Conducting system analysis, (ii) Developing GO model, (iii) Selecting test unit by qualitative analysis of GO method, (iv) Collecting test data, (v) Estimating the failure rate of test unit, (vi) Evaluating system MTTF. In order to verify the advantages and rationality of the new reliability assessment method, the results are compared with the results by Monte Carlo method. All in all, this reliability assessment method not only improves the theory of GO method, which is only used to conduct reliability analysis before; but also provides a new approach for reliability assessment of complex nuclear power equipment, so than it can reduces costs, and improve estimating efficiency and accuracy.


HOMO ◽  
2003 ◽  
Vol 54 (1) ◽  
pp. 57-70 ◽  
Author(s):  
İ. Duyar ◽  
Y.S. Erdal

1957 ◽  
Vol 36 (5) ◽  
pp. 784-786 ◽  
Author(s):  
Charles W. Gish ◽  
Charles L. Howell ◽  
Joseph C. Muhler

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