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Scaffold chemical treatment resulted in a reduction of surface feature dimensions, and therefore increased surface roughness.
Data provided statistical evidence of an increase in the average pore diameter (with a resulting increase in percent porosity) of the nano- compared to conventional PU and PLGA.
Average pore diameter and percent porosity values were determined through evaluation of two SEM micrographs; multiple pores were measured within these pictures to obtain average pore diameter data.
In addition, physical changes (like an overall reduction in surface feature dimensions, increased surface roughness, increased pore diameters, etc) took place in the scaffold as a result of its degradation.

Under LVI loading, the composites are apt to cause matrix cracking, delamination and even fiber breakage, subsequently resulting in significant reductions in its strength and stiffness.
However, very few data on QSI of CMC are available in the literature as they are restricted to very specific materials and experimental conditions.
Herb et al. [13] observed the tri-dimensional woven SiC/SiC composites’ damage subjected to QSI with optical and scanning election microscopy and found the strength reduction is proportional to the diameter of the damage zone evaluated on the back side of the specimen.
Fig. 5 and Fig. 6 are two representative AE data plots.

Existing survey data above show that the large number of historical landfills is causing serious damage to the surrounding environment.
Historical landfill leakage pollution will offset the "twelfth five-year" 0.4% of the annual average COD emission reduction targets, NH3-N 1.4% of the annual emission reduction targets.
The relative environmental science and technology development should focus on high-precision data acquisition device, rapid detection technology and mobile devices, and intensify research and engineering demonstration.

The reduction of the easily developed and alluvial gold deposits, however, forced gold mining companies to involve so-called refractory ores and concentrates in processing.
The purpose of this work is to carry out analytical studies to determine the elemental and species compositions of the materials studied; determine the optimal parameters of nitric acid leaching; determine the most significant factors affecting the decomposition of sulphides and confirm the adequacy of the experimental data obtained.
This process will allow the nitric acid regeneration (4) at subsequent stages of the process, which in turn contributes to a significant reduction in the consumption of the oxidant: ΔG0353= -145,2 kJ/mol (3) ΔG0353= -203,9 kJ/mol (4) As can be seen from the presented calculations, the values of the Gibbs energy changes have negative values, which indicates that the course of these reactions is thermodynamically probable.
The high values ​​of the determination coefficients are confirmed by the data in the example in Figure 5, which shows the close position of the assumed extraction values ​​and the values ​​obtained by the experimental method.

The experimental results of this study would provide a fundamental data to determine the optimum PP fiber dosage at the fire design of HSC member.
However, when the PP fiber dosage was over 0.2%, the reduction in spalling of the concrete specimen leveled off.
This is reasoned that not only the cross sectional reduction by the mass loss but also other factors such as the exposure of main re-bars, the spalling pattern and the localized cross sectional damage have influenced the residual axial strength of the reinforced columns. 2.
Thus, it follows that this experimental finding can be used as fundamental data of optimum PP fiber dosage for the fire resistance design.

By analyzing experimental data, the effects of load ratio on performance and emissions of dual-fuel engine can be studied.
Data processing.
Therefore, the specific fuel consumption of dual-fuel increases rapidly with the reduction of load ratio.
At middle and high loads, the reduction of the specific fuel consumption is determined by the mixture concentration and the high temperature in cylinder.

According to the data of Table.2, we can draw Fig1 and get the relationship between elastic modulus and content of fly ash: (n=24, R2=0.782) (1) Where, F/B is content of fly ash (%); E is compressive elastic modulus of concrete (GPa).
Table.3 Adiabatic Temperature Rising of Mass Concrete Project F/B （%） Age（d） 1 3 5 7 14 28 Longshou 53.2 2.5 14.1 16.8 18.0 19.4 21.3 66.1 2.0 8.3 11.0 13.6 16.0 18.8 Longtan 42.0 3.4 7.8 10.5 12.5 16.9 19.8 46.0 3.2 7.6 10.1 11.6 14.0 15.4 51.0 2.5 5.7 7.7 9.0 11.6 13.1 Sanxia 20 6.0 15.5 17.9 19.5 21.6 22.3 30 3.3 14.9 17.2 18.4 20.0 20.5 40 3.7 13.0 15.6 16.7 18.6 19.6 Influence of Fly Ash on Dry Shrinkage of Mass Concrete Dry shrinkage is the result of volume shrinkage that is caused by water reduction in interior concrete.
This data indicate that the more content of fly ash, the lager creep of concrete at the age of 90 days, moreover, the creep of mass concrete whose content of fly ash is 58.3% doubles that whose content of fly ash is 54.5%.
Primary mechanism is: Firstly, Shape effect of fly ash brings water reduction potential energy, which is helpful to reduce unit water, consequently, and we can drop cement content, reduce adiabatic temperature rising and probability of producing crack in concrete in the condition of ensuring proper strength, densification is also included.

Experimental Study on Site-built Reinforcing Rib Composite Wall under Low Cyclic Loading Weidong Sun1,a, Aimin Wang1,b 1 Faculty of Civil Engineering, Changchun Institute of Technology, Jilin Key Laboratory of Disaster Prevention and Reduction, Changchun, 130012, China aswdccgc@163.com, b785659270@qq.com Keywords: Composite Wall.Low Cyclic Load.Experimental Study.
YHD-300 displacement sensor is used for displacement measurement, and DH3816 static strain tester is used as the data acquisition system.
The data show that the structure has good ductility.
At the same time this experiment is done in Jilin province disaster prevention and reduction key laboratory of Changchun Institute of Technology.

This paper used the finite element software ABAQUS to the bearing capacity and ductility of the steel tube concrete piers for fire performance research, after analysis of steel tube concrete piers in the high temperature changes in the loss of bearing capacity and ductility performance, concrete filled steel tube to reasonable formulation in our country fire prevention design standard and fire after the repair and reinforcement of the structure of the steel tube concrete finite element test data.
As can be seen from the diagram above, with the increase of temperature, pier reaches ultimate bearing capacity of the displacement gradually reduced, specific data as shown in Table 1.
Through the finite element calculation program, the ultimate bearing capacity of the bridge piers are calculated respectively in other temperature after the loss, through the study found that, when the temperature at 500 ˚C, the bearing capacity of the bridge has a tendency to decline with the rise of temperature, but the decline range is not obvious, ultimate bearing capacity loss within 30%, the shape of the load-curve the same as the curve of the normal temperature; when the temperature between 500 ˚C -1000 ˚C, there is a significant reduction for the ultimate bearing capacity of the bridge pier after high temperature, ultimate bearing capacity loss within 80%.
Finally, although the material yield strength and ultimate bearing capacity with the rising of temperature greatly reduced, but it is not hard to see from the curve of concrete filled steel tubular composite performance is still good, its mechanical properties are still superior plastic, no signs of brittle failure; it is because of this characteristic, concrete filled steel tube structure is widely used in civil engineering, significant importance on the structural stability and seismic disaster reduction.

Additionally, wear mechanism and effect of reduction of tool diameter on machine slot geometry was discussed.
A piezoelectric dynamometer (Kistler type 9317B) with charge amplifiers was used to measure and record the cutting forces data during the machining process.
It was connected to the DAQ-Charge B collect the signal and converted it into the data format.
Furthermore, the reduction of spindle speed significantly reduces the total thrust force, Fz because of the effectiveness material removal rate and larger tool contact area at slower rotational speed.