In this paper, anisotropy NdFeB magnets were prepared using SPS technique. Meanwhile, the microstructures, magnetic properties, dimensional precision and corrosion resistance of the magnets were investigated.
In this paper, anisotropy NdFeB magnets were prepared using SPS technique. Meanwhile, the microstructures, magnetic properties, dimensional precision and corrosion resistance of the magnets were investigated.
In a novel modification of transient differential transmission spectroscopy, the first excited state S1 is reexcited via a second laser pulse towards a higher lying state Sn. The dynamics of the relaxation of this sta...
In a novel modification of transient differential transmission spectroscopy, the first excited state S1 is reexcited via a second laser pulse towards a higher lying state Sn. The dynamics of the relaxation of this state Sn as well as the states created from Sn are revealed by a broad-band probe pulse. We find that the charge carrier generation efficiency from Sn is higher compared to S1. The push and probe durations below 20 fs enable the temporal resolution of the ultrafast relaxation of the Sn state and enables us to identify the two main contributions to enhanced charge generation from Sn, energy migration towards sites of high dissociation probability, and exciton dissociation during vibrational relaxation.
The diffusion and mass transfer, reaction, integration and growth processes of the metal ions on the activated carbon fibers (ACFs) are discussed. Based on the diffusion film theory, the diffusion and the integration ...
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The diffusion and mass transfer, reaction, integration and growth processes of the metal ions on the activated carbon fibers (ACFs) are discussed. Based on the diffusion film theory, the diffusion and the integration model are developed to describe the deposition processes of metal ions from the solution to ACFs in the fluidized beds. The model of heat transfer of this process is established to expound the important role-played in deposition processes by the influence of the reaction heat released at ACFs surface and the non-uniform temperature distribution caused by hydrodynamics.
The recovery of Au by activated carbon fibers (ACFs) was carried out in a 40mm diameter, 1200mm height fluidized bed. The rates of reaction of the functional fibers with Au3+ in the pure aurum solution and in the auru...
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The recovery of Au by activated carbon fibers (ACFs) was carried out in a 40mm diameter, 1200mm height fluidized bed. The rates of reaction of the functional fibers with Au3+ in the pure aurum solution and in the aurum-containing wastewater were measured respectively at the different solution flow rates, and compared with the results under the static solution conditions. Experimental results indicated that the reaction rates in fluidization are notably higher than those in the static state and increase with the increase of solution flow rate. It demonstrates that the thickness of the concentration boundary layer is decreased and a uniform temperature field is established in the bed due to increasing of the turbulent extent with the relative fiber/solution velocity.
An in-depth survey of the researches is presented on the anisotropic structure and properties of inter-phase in carbon fiber reinforced polyetheretherketone composites. The formation and structural nature of interfaci...
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An in-depth survey of the researches is presented on the anisotropic structure and properties of inter-phase in carbon fiber reinforced polyetheretherketone composites. The formation and structural nature of interfacial short-range and long-range effects, micromechanical and macromechariical roles of interphase are discussed. Besides, prospects of further studies and a novel methodology for revealing interfacial properties of thermoplastic composites are demonstrated.
We have isolated a new Chlamydomonas reinhardtii Dangeard (Chlamydomonadales, Chlorophyceae) mutant with from one up to more than four eyespots cell-1. It was designated mes (multiple eyespots)-10. A wild-type cell ha...
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We have isolated a new Chlamydomonas reinhardtii Dangeard (Chlamydomonadales, Chlorophyceae) mutant with from one up to more than four eyespots cell-1. It was designated mes (multiple eyespots)-10. A wild-type cell has a single eyespot, located under the chloroplast envelope, at a certain position near the cell's equator where the chloroplast envelope is in contact with the cell membrane. The eyespot(s) in mes-10, however, are located at various positions on its chloroplast. The mes-10 cells displayed negative phototaxis to 480-500 nm light. This behavior differed from that of a similar mutant, ptx4, which has been shown to have multiple eyespots and display no phototaxis (Pazour et al., J. Cell Biol. 1995;131: 427-40). Mes-10 may retain a functional photoreceptor and a photosignal transduction system independently of its multiple eyespots. This mutant should be useful for studying how C. reinhardtii responds to light signals, as well as how eyespots are formed in the cell.
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