Notice of RetractionResearch on fuzzy comprehensive assessment for fire safety of regional buildings
The primary mission of fire safety assessment is seeks the change rule of system security, and entrusts with the certain quantity of the concept. Then according to the security condition and the degree of hazard of the system, take the essential measure to achieve the anticipated security goal. According to the characteristic, the origin of the buildings fire, the paper adopted the fire safety assessment method to research the preventing and controlling on buildings fire. The paper briefly introduced the fire safety assessment principle, the theory and the method, and adopted the fuzzy synthesis assessment method as the reasonable method for the fire safety evaluation of buildings. A fire safety assessment index system was founded firstly. Then, the calculation methods for the weight of evaluation indexes and fuzzy calculation were described. Finally, a comprehensive regional buildings fire evaluation and emergency response system was illustrated.
Application of Computational Simulation in Fire Science and Engineering Research
Computational simulation, especially field modeling, is highly developed in recent years. While it has been widely used in many fundamental research and engineering fields, few were applied to aspects of fire science and engineering research. In this paper, the developments and applications of computational simulation for fire dynamics arc firstly reviewed. The basic principles of large eddy simulation are described in detail, which involves turbulence modeling, combustion modeling, and thermal radiation modeling. An example of numerical experimental study of fire dynamics process for oil tank fire with large eddy simulation technology is provided and some fire provisions are approved with respect to the results. 
From the case, it is shown that field modeling has an extensive application future in fire safety science and engineering research. And it will become an effective means in fire management, fire risk evaluation, decision -making and supporting plan for severe disasters and so on.
Influence of filler addition, storage medium and evaluation time on biaxial flexure strength and modulus of adhesive systems
Abstract Objective. This study evaluated the effects of filler addition, storage medium and time on biaxial flexural strength and flexural modulus of six adhesive systems. Materials and methods. The adhesives were either unfilled resins: Single Bond, Prime&Bond 2.1 and One-Step; or filled resins: Single Bond Plus, Prime&Bond NT and One-Step Plus. Resin discs of each product (0.5 mm thick × 6.0 mm diameter) were prepared using silicon molds (n = 10). The discs were stored dry, in water, mineral oil or ethanol for 1 week or 3 months before biaxial flexural testing. Data were statistically analyzed by 3-way ANOVA and Tukey's post-hoc test (α = 0.05). The specimens were tested in a universal testing machine at 1.27 mm/min until failure occurred. Results. In general, the storage in ethanol led to significantly lower flexural strength and flexural modulus values than the other storage conditions for all adhesives in both storage periods. Filler addition increased flexural strength and flexural modulus for Prime&Bond NT, when it was stored dry or in water for 1 week. For Single Bond Plus, the filler addition resulted in higher flexural modulus, when it was stored for 1 week in oil and in ethanol. No significant differences in flexural modulus were observed between One-Step and One-Step Plus in any storage medium. Conclusions. Results suggested that filler addition does not necessarily have to increase the flexural strength and flexural modulus. Ethanol and oil storages tended to yield opposite effects.