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The paper reports the results of the development of a combined extraction/electrostatic pseudo-liquid membrane (ESPLIM) concept for the mutual separation of multi–component ( n >2) metal ionic mixtures. Multiple sets of single two-cell ESPLIM equipment were linked up in order to achieve multi-metal separation. The principle of separation is described. A practical demonstration of this concept has been carried out by applying it to a typical mixture of metal ions present in ion-sorbing rare earth ore leachate solution, i.e., Al 3+ , La 3+ , Sm 3+ , and Y 3+ : an aqueous solution containing in mg/l Al 200–360, La 250–460, Sm 40–60, and Y 160–340 was used as the feed solution and 20% (v/v) di-(2-ethylhexyl) phosphoric acid (HDEHP) in kerosene was employed as organic membrane phase. The feed solution stream passed through the extraction cell at a flow rate of 1 l/h in once-through mode and the stripping solution passed through the stripping cell at a flow rate of 0.2 l/h in recirculation mode. By controlling the feed pH, organic membrane phase flow rate, and the hydrochloric acid concentration in stripping phase, the separation of Al, La, Sm and Y was obtained.

Historically, almost all goods transported worldwide have been carried by sea with the current estimate stands at approximately 90 percent by volume and 70 percent by worth. Maritime industry is an important economic sector as it has a direct impact on the prosperity of a region and/or city. This chapter presents a review on maritime trade evolution in Asia from the thirteenth centuries to the post-World War II, followed by an examination on the contemporary development of some major Asia ports. From the extant port literature, a list of factors affecting port competition and development is identified and reviewed. The chapter concludes with brief discussions on fruits for thought, future trend, challenges and opportunities facing the Asia maritime trade industry.

In the design context of overall configuration, structure and landing gear subsystem of a soft lunar lander, modeling and simulation are the main approaches. Dynamics modeling of a two-dimensional symmetric downhill landing was conducted in this paper, pertinent simulation package was established in MATLAB/Simulink environment. Soft landing dynamics and parameter-sensitivity simulation were performed by means of the computer package. Analysis results show that the lunar slope, the vehicle's radius of gyration and pitch angle have a great effect on landing load factor, landing stability and stroke of shock absorbers. Therefore, they should be strictly controlled as small as possible. Vertical and lateral components of velocity vector have also a considerable influence on landing performance, the lateral component is desired to be controlled null in actual landing.

Open-pit coal mines can recycle resources by underground coal mining but it will lead to subsidence of upper slope, and may cause geological environmental disasters such as landslides. A fuzzy comprehensive evaluation model of the slope stability in coal mining subsidence areas is proposed. Based on the model the evaluation of slope stability in the subsidence zone in Antaibao open pit coal mine is carried out. By conducting the qualitative and quantitative analyses simultaneously, the evaluation results are more scientific than the qualitative description only and semi-quantitative analysis. According to the results of stability evaluation division, to ensure the mine safety production in the danger zone, the monitoring network composed of 20 monitoring points successfully implements monitoring and forecasting for stable condition of slopes.

In this study, the Fe41Co7Cr15Mo14C15B6Y2 bulk amorphous alloy with high glass-forming ability was prepared using the arc- melting copper mold casting technique, and corresponding amorphous coating was obtained using the laser melt amorphous powders on the surface of carbon steel. The corrosion resistance performance of the laser cladding coating in hydrochloric acid was analyzed and tested in experiments under the conditions of different laser cladding speeds. The amorphous alloy coating with different fabrication parameters have the difference internal structure, which lead to the difference corrosion resistance in the same environment to some extent. The nature of amorphous alloy and the corrosion morphology were investigated using XRD and SEM method, respectively. The corrosion experiments showed that: when the laser power was 3300W, the corrosion resistance of four kinds of samples in hydrochloric acid from strong to weak as follows: as-cast sample > the coating with laser cladding speed 110 mm/min > the coating with laser cladding speed 120 mm/min > the coating with laser cladding speed 130 mm/min. The free corrosion current density of casting sample, sample 1, sample 2 and sample 3 is 3.304 × 10-6 A/cm2, 2.600×10-3 A/cm2, 2.030×10-3 A/cm2 and 3.396×10-4 A/cm2, respectively.

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