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Introduction The worldwide trend across all industrial branches is reduction of Carbon dioxide emissions.
In cement industry, possibilities of CO2 emissions reductions in combustion process or by optimization of production processes are quite limited.
A) velocity of propagation of ultrasonic pulse B) dynamic elasticity modulus Fig. 5: Selected set of data gained during observation of development of parameters by ultrasonic pulse method depending of time of exposure - concrete placed in gaseous environment CO2.

Introduction Generally known, the pieces obtained through injection moulding and cooling process, suffer a reduction in the volume of the known phenomenon of contraction.
By default, there is the reduction of linear dimensions of the piece.
Thermal properties of the material The material injection temperature is thought to be 240° C, as specified in the manufacturer's data sheet and the mould temperature was found uniform at 54° C.

Within the last decades, radical engine noise reduction was achieved with the appearance of high bypass ratio engine concepts.
The output of the synthesis code such as flight trajectory, aerodynamic parameters etc, is placed on an interface file which can be used directly as input data for the NASA Aircraft Noise Prediction Program (ANOPP) for calculation of the perceived noise level at selected monitoring stations.
This is due to the decrement of approach speed when flap setting is increased, thus, resulting in the reduction of noise during the approach.

Various methods have been used for lactose determination such as oxidation-reduction titration method[1], flow-injection analysis[2], HPLC[3,4], and CE-ED[5].
Determination of lactose by oxidation-reduction reaction and its application to some kinds of milk and milk products, Nippon Shokuhin Kogyo Gakkaishi. 38(1991), 575-580
Statistics for experiments: an introduction to design, data analysis and model building, New Nork: Wiley, 1990

According to government data, there are 23% damaged bridges in the Wenchuan earthquake disaster area.
the equation characterized nonlinear single degree of freedom system under the earthquake acceleration , The relationship between reaction of ductility coefficientμ, the strength reduction coefficient R and period T , that is R-μ-T.
Preset the ductility coefficient μ, according to equation (1), through many groups of nonlinear time history analysis can get the strength reduction coefficient of relationship between R and T cycles, the elastic-plastic response spectrum is .

Two electric propulsion ships, i.e. a chemical tanker built by Shanghai Edward shipyard and a semi-submersible vessel built by Guangzhou Shipyard International company,both had accidents, e.g. her swithboard overheating led to phenomenon of burning out due to excessive harmonic distribution,so relevant persons on the ship had to take measures of the speed reduction and power plant capacity reduction in order to guarantee safe operation of the ship[1].
Under the condition of ship's mooring manipulation from the main switchboard busbar, power quality disturbance data can be recorded,as shown in Figure 1[2].

Many studies on the methods for the preparation of gold nanoparticles were reported, such as controlled chemical reduction [6,7], photochemical or radiation-chemical reduction [8, 9], sonochemical or electrochemical methods [10-12].
The peak positions are in good agreement with those for Au powder obtained from the International Center of Diffraction Data card ( ICDD, formerly JCPDS, 04-0784 ).

Fundamental attributes of pre-alloyed powders Pre-alloyed powders for diamond tools are generally prepared by chemical co-precipitation reduction and water atomization.
Table 1 Fundamental attributes of pre-alloyed powders Symbol of powders Chemical composition (%) True density (g/cm 3) Reduction temperature (℃) Content of oxygen (wt%) Scott density (g/cm 3) Average particle diameter D50，(μm) 04 Fe65Cu20Ni7Sn8 8.03 620～640 0.38 3.4 17.8 05 Fe65Cu25Co10 8.15 620～640 0.29 2.9 18.3 06 Fe15Cu 75Co10 8.72 600～620 0.24 2.6 15.3 A Cu－Co 8.48 － 1.07★ 1.1～1.6 ★ 4.95 B Cu－Co 8.75 － 1.04★ 1.0～1.5 ★ 4.45 C Fe－Co 8.05 － 0.39 2.16 13.97 Co 100% Co 8.9 400～420 0.28 0.9 1.5 ★ is from the references, and the others are experimental data by author.

Sun et al. [2] have prepared spherical FePt nanoparticles by the reduction of Pt(acac)2 with 1,2-hexadecanodiol and the thermal decomposition of Fe(CO)5 in the presence of mixed surfactants.
Recently, preparation of monodisperse FePt nanoparticles via the simultaneous reduction of FeCl2 or Fe(acac)3 and Pt(acac)2 has been reported [7,8].
And c/a ratio of the tetragonal lattice in the FePt powder synthesized was 0.973, which is in good agreement with the data of other reports (c/a = 0.96 ~ 0.98) for L10 ordered FePt nanopowder [13,14]. 20 30 40 50 60 70 80 (c) (b) 2 Theta (Degree) (a) Intensity (Arb.

Concentration of expanded cut tobacco can be determined by the following equation: (1) 2.4 Data analysis Mixture quality is usually described by the concentration variance of tracer component.
For continuous mixers, the ratio of variances at mixer inlet and outlet is defined as the variance reduction ratio (VRR), which was used to measure the mixing ability of mixer
Results and Discussion 3.1 Mixing homogenization The variance reduction ratio at different drum speed and cut tobacco feeding rate were given in the Fig.2.