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Also the grain structure of such materials hinders the downscaling of the devices and degrades the chemical stability.
Although the electromechanical coupling coefficients ηn decrease for increasing mode numbers n due to a progressing mismatch of the vibration sections to the lengths of the top electrodes, all resonant frequencies fn of each probed resonator were detected up to the frequency limit of the vibrometry measurement system.
Double-logarithmic scaling was chosen to emphasize the power-law dependence fn~l-b of the resonant frequency on the beam length l. 0 20 40 number of flexural mode 40 30 20 10 Average amplitude [pm] 0 1 2 3 4 5 6 7 8 9 10 0 20 40 60 20 10 Frequency [MHz] L = 500 µm L = 1000 µm Fig. 9.
Thus, the resonant frequencies fn of the nth harmonic resonant longitudinal mode are given by equation:  lcncfn 2// 11   , (2) where n is the mode number, c1 the phase velocity, λ the wavelength and l the beam length [40].

In these figures, the regions marked with number 1 and 3 are assigned to the tool rotation before and after the cutting pass (zone 1 and 3 displayed in Fig. 3).
The number 2 corresponds to the cutting steady state along the length of 80 mm. 1 3 2 3 2 1 (a) (b) 3 2 1 2 3 1 (c) (d) Fig. 5 - Signal progression for tangential and axial force for Ti-6Al-4V at 50 m/min (a), 65 m/min (b), 80 m/min (c), and 100 m/min (d).
In opinion of these authors, the variation of the peak cutting force components could be attributed to a number of possible factors, such as thermal effect, tool wear, etc.
The grains are deformed and more refined than in the as-received conditions and the work-hardening that causes the structure alteration is more significant at high cutting speed.

Since 1996, Chinese Government has issued a large number of policies and regulations to restrain the abuse occupation of farmland with remarkable effect achieved, but construction land is featured as the higher stability, not easy to be translated into cultivated land, so the cultivated land should be transformedfrom other land types [9].
The higher environmentalaccess threshold has limited above 30 serious pollution projects with total investment of more than RMB 4 billion constructed in the upstream region in recent years; 29industrial and mining enterprises featured as high consumption or high pollution have been shut down successively, severely restricting the local economic development and reducing the employment opportunities.The compensation criteria of RMB 5-10/mufor national public welfare forest is not only lower than the criteria ofRMB 30 /mu specified by Beijing at the downstream, but also far less than the incomefrom plantation of economic forest; compensation criteria for the returning farmland to forest is annual subsidy of 100 kg grain, and cash of RMB 20; the lower compensation criteriacan’t meet the basic living conditions of farmers and endanger farmers' survival and etc.in the long term[12], which causes human welfareof the underdeveloped upstream increasingly backward anddifference of living level between
For ecological protection, Zhangjiakou City has carried out a series of ecological protection projects with the total investment of RMB 4.86 billion for forestation, including RMB 4.31 billion for “Grain for Green” projects, the completed ecological forestry totalize to 985,300 hectares.

Till date, many number of synthesis methods have been working to produce nanoferrites like sol–gel [20], mechanical alloying [21], hydrothermal-microwave [22], microemulsion [23], pulsed wire discharge [24], hydrothermal processes [25], co-precipitation [26] and aerosolization [27].
The TEM images show that nanoferrites consist of different nano grains separated from one other.
The TEM images show that nanoferrites consist of different nano grains separated from each other.

The tool turret is more advantages compared to tool post as many number of tools can be accommodated in the turret, moreover tool changing is executed quickly.
The larger the grain growth, the greater the preheating temperature, as evidenced by the distribution of micro-hardness beneath the surface.
There has been no grain growth.

Silica sand is a term used for describing sand with a very high percentage of quartz (silica) grains [14].
The scanning results showed that the presence of fine amorphous aggregation on grains of ground sand leads to a “partial pozzolanic reactivity” [20].
A total number of 120 cubes and 80 prisms were obtained from 40 slabs.

According to DongPing He, the Professor of College of Food Science and Engineering, Wuhan Polytechnic University and Head of Fats and Oils Working Group of National Oil and Grain Standardization Committee, in China, there are 2,000,000 to 3,000,000 tons of waste oil being back to table every year, and the consumption of Chinese animal and plant oil is 22,500,000 tons per year.
Besides, the relevant departments are limited by fragmental responsibilities, resulting in managed vacuum which gives a chance for large numbers of illegal factories to recycle and process the oil.
Under the temptation of money, large numbers of illegal factories or workshops engage in illegal recovering and processing.
Lastly, basing on the discharge volume of waste oil each year, local government should set up processing factories which specialize in waste oil disposal in reasonable numbers and optimal address through biding to prevent blind competition.

Distribution of questionnaire Overall situation Using the system Not using the system Number of questionnaire 88 39 49 Average area of pond [ha] 5.57 7.64 5.51 The total production cost of aquaculture is divided into the production cost and land cost.
Direct production costs include seed costs, feed costs (including grain feed, plant feed and animal feed), drug costs (including epidemic prevention fee, the expenses of drug which is used to improve the water environment ), electricity charges and sales expenses, etc.; Indirect production expenses include fixed assets and machinery depreciation(including the depreciation of production houses, ships, preventing escape equipment, increasing oxygen equipment, bait casting equipment, fishing equipment and pumping equipment), the taxes , management fees, insurance premium, etc.
Especially at night, it reduces the number of waking up, so that farmers can sleep on a "good night" and happiness gets promoted; and, because of water quality monitoring, early warning, it reduces the crab disease, indirectly reduce the labor.
Labor cost variance [yuan/ha] Xinjian Yangxiang Gaocheng Control group Experimental group Control group Experimental group Control group Experimental group Number of questionnaire 19 13 17 19 13 7 Average area of pond 1.38 1.32 1.81 1.21 7.34 20.39 Labor cost 18836.34 15193.56 19145.10 17991.23 12805.15 12295.97 Difference -3642.79 -1153.87 -509.18 Change rate -19.34% -6.03% -3.98% Note: Difference is the difference value between the experimental group and control group.

Fine Aggregate The employed fine aggregate in this research is locally available natural siliceous sand, with a maximum grain size of 1.4 mm, and a specific gravity of 2.5. its particle size distribution lays within the range of fine grading zone according to the classification of the Egyptian code of practice for design of concrete structure (ECP 203-2020) [6]. 2.1.3.
All samples have been demolded after 24 hours from casting numbered and weighed, then 1st half of the cubes (100 × 100 × 100) mm was cured in potable and the 2nd half was cured in sulfuric acid of concentration 0.2N (7.35 ml/ lit) until the age of testing (3, 7, 28, 90 and 180 days), curing water and the sulfuric acid solutions were changed every month. 2.2.3.
The large number of pores and voids can be also seen in the image.
“Partial Replacement of Cement and Fine Aggregate by using Bentonite and Waste Sheet Glass Aggregate”, International Journal of Engineering Trends and Technology (IJETT) – Volume 39 Number 6- September 2016

The steel structure is formed by the compound in a die form of martensitic precipitates on fine-grained ferrite warp.
The number of elements was optimized relatively to the computing time so that the accuracy reflects the reality.
It needs to be stressed that the number of triangle for blank sheet was 76 at the end of the process.
However, the number of quadrangle was variable, at the beginning the amount was 9268 whereas at the end 121087 [8].