In this lecture we will look at some applications of Newton's second law, expressed in the different coordinate systems that were introduced in lectures D3-D5. Recall that Newton's second law F=ma, (1) is a vector equation which is valid for inertial observers. In general, we will be interested in determining the motion of a particle given

Few events obtain the same instant national and even worldwide news coverage as when several people are shot and killed in a public place. The worst examples in the United States come readily to mind Colin Ferguson killed 6 people during his rampage on the Long Island(NY) Railroad in December 1993: 22 people were killed during the October 1991 shooting in Luby's Cafeteria in Killeen, Texas; 5 persons died at the Cleveland Elementary School

Textures in different layers of superconductors based on YBGO system are analyzed using the methods of pole figure and conventional Φ scans. It is shown that the Φ scanning technology has only 1-dimensional description and could omit some information of 3-dimensional orientation distribution, which will in-fluence the superconductor quality. The pole figure method, in contrast, demonstrates the orientation distribution 2-dimensionally and gives a comprehensive view of thin film texture, which is a much better method for texture analysis in superconducting films,in which there is commonly an unique high sharpness texture com-ponent

A mathematical model of kinetics of carbide layer formed on the surface of steel in fused system was set up with the theory of non-stable diffusion mass transfer and regular solution sub-lattice. This model was analyzed and testified by the experiments in which the VC layers were formed on four kinds of steels as steel 45, 4Cr5Mo-SiV1, T10, and Crl2MoV immersed in the V2O5-Na2O-B2O5 fused system with the reducing agent of silicon. The results showed that there was a good agreement between the model and the experimental results; the growth speed of carbide layer depended on the factors of carbon activity in substrate, treatment temperature, kinds of carbides and its structure

In this unit, you will first listen and then talk about college life read about how much there is to learn in college write about your most memorable examination practice reading skills: reading with a purpose practice forming compound and complex sentences learn to fill in registration forms and design name cards visit culture salon about college life in the United

I. Company overview and main business activities II. International mobile phone market and smart phone industry III. Samsung brand development and positioning internationally IV. Mobile phone market in China V. Samsung in China VI. Samsung marketing and branding strategies in China VII. Samsung’s competitors in the Chinese market VIII. SWOT Analysis IX. Conclusion and Suggestions

Equilibrium between slag and molten iron at 1600℃ was investigated for the direct alloying of steel with Nb2O6-bearing slag. The activity of niobium oxide in the slag was measured. The αNb2O5 is in the range of 10-2-10-4. TheδNb2O5 is ranged in 100-10-2.Niobium partition decreases with the increase of[Si]% and CaO/SiO2. When α[0] and ΣFeO decrease, niobium partition decreases too. The δNb2o5 and the ratio of γsiO2 to γNb2O5 decrease with the incre-ase of slag basicity. The suitable thermodynamic conditions in direct alloying of steel with Nb2O5-bearing slag have been found

The Baotou Iron Ore of China contains very high niobium. This paper reported the results through laboratory and practical experiments on niobium enrichment in blast furnace. The effect of temperature, constituents of slag and silicon content in hot metal on niobium recovery was studied and the results had been verified by blast furnace operation. According to the reaserch, a comprehensive extraction process that extraction combines with ore dressing and with pyro--hydro-metallurgy should be adopted for Baotou niobium resource which is difficult to concentrating. The methods of increase in niobium recovey were also suggested in this paper

8.1 Classification of Phase Transformations in Solids 8.2 Features of Phase Transformations in Solids 8.3 Thermodynamics for Phase Transformation in Solids 8.4 Kinetics for Phase Transformation in Solids

8.1 Classification of Phase Transformations in Solids 8.2 Features of Phase Transformations in Solids 8.3 Thermodynamics for Phase Transformation in Solids 8.4 Kinetics for Phase Transformation in Solids