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The experiment was used fermentation bed technology to study the effect of fermentation bed on diarrhea rate, growth performance and blood physicochemical indexes of lambs in winter. Three batches of experiments were carried out in a row, and 30 hybrid ewes who had just given birth and gave birth to two lambs in each batch were randomly assigned to two closed houses with windows and the same building structure, one floor was transformed into a fermentation bed (experimental group), and the other was used as a control group. The lambs were fed in a single pen for 7 d and then transferred out. Each group was randomly divided into three pens, transferred to semi-open houses, and continued to be fed until weaning at 60 d. The results showed that on 1~7 d, the diarrhea rate of lambs in experimental group was significantly lower than that in control group (P<0.05). From birth to weaning, the diarrhea rate and mortality of lambs in experimental group were decreased by 2.49% and 2.95% compared with control group (P<0.05). On 7 d of experiment, the body height, body length and chest circumference of lambs in experimental group were increased by 1.71, 0.56, 0.66 cm compared with control group, respectively (P<0.05). On 8~30 d, the average daily gain of lambs in experimental group was increased by 22.59% compared with control group ( P<0.05). The average daily gain of experimental group was significantly higher than that of control group during the whole experiment period (1~60 d) (P<0.05). At 60 d of age, the body weight of lambs in experimental group was increased by 13.42% compared with control group ( P<0.05). The percentage of lymphocyte in whole blood of lambs in experimental group was significantly higher than that in control group (P<0.05), and the content of GLU, TP and GLB in serum were increased by 8.45%, 3.34% and 10.49% compared with control group, respectively (P<0.05). The study indicates that using a fermentation bed feeding mode within 7 d of birth can reduce the rate of diarrhea and mortality before weaning, and improve the apparent digestibility and blood physicochemical indicators of lambs. [ABSTRACT FROM AUTHOR]

Because the railway maintainer's work has the characteristics of real-time and continuity and the personnel evaluation at home and abroad with a single evaluation index, this paper proposes the evaluation method based on multi-factor dynamic effects, the weight of index based on the double inspiriting control line is introduced, and the improved point and value of the positive and negative direction are identified, finally the dynamic improvements of the evaluation values at each time are completed, this method overcomes the shortcomings of invariableness of the evaluation indexes weights, and solving the problem that the qualitative indicators in the evaluation process are difficult to accurately measure and describe. The experimental results show that, the evaluation accuracy of the method for railway maintainer is more than 90%, this method effectively improves the detection accuracy compared to other methods and manages railway maintainer scientifically. [ABSTRACT FROM AUTHOR]

This study researched formation mechanism and emission calculation and control of firebrick kiln NOx in Yangquan refractory industry base. On the basis of analyzing different types of firebricks, furnaces and fuels combined with the NOx formation mechanism, it is revealed that the formation types of NOx in the sequence followed by fuel-NOx and thermal-NOx when forming in the producer gas firebrick kiln, and ones followed by prompt-NOx and thermal-NOx in the natural gas firebrick kiln, while only thermal-NOx under oxygen-enriched combustion. The NOx discharge rate and concentration of different fuels, bricks and furnaces were separately measured and calculated by the methods of data monitoring and discharge coefficient, with the latter tested by the former. The results show that: all values of the latter are lower than the former in the producer gas and the deviations are very small (2% -3%), while the latter are all higher than the former in the natural gas and the deviations are very large (>25 %); the above-mentioned NOx formation mechanisms are also verified; it is reliable and convenient to calculate NOx emissions when using the discharge coefficient method, which is adjusted by data monitoring method. The single quality evaluation of NOx is carried out; the monitored NOx emission concentration is 1.05 to 1.66 times as large as the standard in the producer gas and that of the clay brick is smaller than others, while the values of intermittent type kiln are smaller than the continuous furnace; they decrease in the sequence of high alumina brick, silica brick and clay brick when the NOx emission of gas kiln is normal. The feasible control measures were proposed, which would lay the foundation for total quantity control of NOx in China. [ABSTRACT FROM AUTHOR]

The paper focuses on the stock market cycle fluctuation in China using the regime switching model. Our results indicate that: heteroscedastic four states Markov regime switching model describes the stock market fluctuation characteristics well; from December 26, 1996 to December 31, 2010, after the raising limit, stock price fluctuation exhibits four different kinds of moving situation: dropping sharply, dropping mildly, rising sharply, and rising mildly; our stock market express rising rapidly and dropping slowly, and dropping slowly is the major fluctuation; periodic fluctuations in the stock market generally divide into more volatile and less volatile two periods. [ABSTRACT FROM AUTHOR]

In order to understand the plasma jet-liquid media interaction characteristics, a high speed digital camera system was used to record the propagation process of plasma jet in liquid media in cylindrical chamber. The properties of the axial and radial displacements of plasma jet in liquid media and the change in its spread speed with time were obtained. Based on experiment, a two-dimensional-axisymmetrie, unsteady mathematical model was developed. Numerical simulation of this process was carried out. The temporal and spatial distributions of volume fractions of plasma and liquid were obtained. The axial displacement calculated from the numerical simulation matches well with that from experiment. The distributions of pressure, velocity and temperature of the flow filed were obtained, and the discontinuous mechanism of Taylor cavity was analyzed. [ABSTRACT FROM AUTHOR]