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However, most of local plants are small hydropower stations[1].
A Comprehensive Model for Prediction (1)The PLS model Suppose the monthly output as a dependent variable, factors. .
The original data is shown in Tab.1.
References [1] Xu Wei，Luo Xin，et al．Application of two-phase reduction method in load forecasting for regions with abundant small hydropower[J]．Power System Technology，2009，33(8)：87~92
[2] Zhao Qian，Li Jiuhong，et al．Grey prediction model for annual energy output of a hydropower station without storage[J]．Journal of Shananxi Water Power，2001，17(3)：1~4

Fig.1 Auxiliary frame finite element model Welded joints adopt SHELL unit (fig.2), bolts adopt RBE2 and CBEAM unit (fig.3), welding spots adopt CWELD unit for simulation (fig.4).
Fig.2 Welded joints adopt SHELL unit Fig.3 Bolts adopt RBE2 and CBEAM unit Fig.4 Welding spots adopt CWELD unit Auxiliary frame modal analysis Cars drive in the process, the auxiliary frame on incentive is mainly composed of two parts: 1.
Nastran is the slover for auxiliary frame modal analysis, the modal results of the first six order are as shown in table 1.
Table 2 Calculation results of modal optimization order modal shape Frequency ( Hz ) target value ( Hz ) conclusion 1 First order torsional modal 203.9 200 achieve the optimization goal 2 First order bending mode 249.0 245 achieve the optimization goal 3 bending mode 314.3 310 achieve the optimization goal 4 ntegral + local mode 345.0 340 achieve the optimization goal 5 Local mode 427.2 425 achieve the optimization goal 6 Complex modal 479.0 460 achieve the optimization goal According to the results above, the auxiliary frame after structure optimization, the first order modal frequency above 200 Hz, and the other order modal frequency is more than the target values.
References [1] Liu Xin-tian, Huang Hu,Liu, Chang-hong etc.: Static Analysis Of Automobile Frame Based On the FEA.Journal of Shanghai engineering technology university. 21(2), p.112-116(2007)

Experimental Investigations on Aluminium Ultrasonic Welding Parameters APETREI Lăcrămioara1,a, RAȚĂ Vasile1,b, RATA Ruxandra2,d and BULAI Elena-Raluca1,c 1 "Ștefan cel Mare" University of Suceava, Universității Street, 13, 720229 Suceava, România 2 Vrije University Brussel, Pleinlaan 2 1050 Brussel, Belgium aapetreil@yahoo.com, brata.v@fim.usv.ro, ccioancaraluca@fim.usv.ro, cruxandra@avocatrata.be Keywords: aluminium sheets, ultrasonic welding, metallographic analysis, microhardness.
The static force is acting perpendicular to the working pieces and the dynamic force in parallel with them [1].
Ultrasonic Welding Experimental Conditions The experiments were carried out on an ultrasonic welding equipment (Fig. 1) used for metallic materials, characterized by an piezoceramic generator, with 20kHz frequency, electropneumatic actuation, and digital command and control Fig. 1.
References [1] L.
[3] Kuen Ming Shu, Yu Jen Wang, Chi Wei Chi, The Design of Multiple Function Acoustic Horns for Ultrasonic Welding of Plastic, 2013, Applied Mechanics and Materials, available at: http://www.scientific.net/AMM.479-480.329, accessed: 04.01.2014

Fig. 1.
Table 1.
The grain size of alloys 1, 2, 3 and 4 [µm].
References [1] E.
Comp., 479 (2009) 726-731

Chun,1,3, a T.J.
Grade-2 Ti was purchased ready cut to sizes 1 cm × 1 cm × 2 mm (ASTMB-265-98; SupraAlloys, CA) and cleaned as described in [8].
This translates to approximately 479-1026 amino acids in this polymer.
References 1.
J Cell Biol 66(1):198-200. 13.

Table 1.
Conclusions 1.
References [1] L.
Т. 100, 1 (2008) 1-9
Shrednik, Conservation of mineral resources in transport and civil construction, Lecture Notes in Civil Engineering. 50 (2020) 479–486.

The optimal conditions for analyte monitoring are summarized in Tab.1.
As shown in Fig. 1, when water was used as extraction solvent, recoveries of target antibiotics were less than 50%, except SPD.
Extracted by methanol-1%NH3, recoveries of SAs are more than 50%, but TCs and MLs were low.
Compared with others, 1 circle has better extraction efficiency.
So, 1 cirle was selected as the optimal cycle number.

Fig.1 reveals a kind of 6-unit joint.
References [1] D.S.
Yu: Building Construction, Vol.31 (2009) No.12, p.1019 [3] CEN:ENVI 993-1-1 Eurocede 3, Design of Steel Structure: Part 1.1 General Rules and Rules for Building [S],1992 [4] T.
Li: China Patent PCT/CN2004/000479. (2004)
Hu: Journal of Building Strutures, Vol.29 (2008) No.1, p.10 [10] F.

Mechanical Model and Calculation Method (1).
Mechanics analysis model is shown in figure 1. δ is load equivalent circle radius(δ=10.65cm) , hi is the thickness of the layer structure I, Ei is the modulus of resilience and μi is poisson ratio.( i=0, 1,…, n-1, n is pavement structure layer.)
Figure 1 Pavement structural mechanics analysis model (2).
Modulus of selection shall be carried out in accordance with the table 1.
References [1] Ruibo Ren.

Fig. 8(a) shows the step-loading routine for PTFE/MoS2-1 coating.
References [1] S.R.
Lett. 25(1) (2007), P. 71-77
Phys. 42, 104001 (2009), P. 1-8
A 83A(2) (2007), P. 471-479