新型硅胶-聚合胺树脂从氯化钴电解液中深度净化除铜

SP-C是一种新型硅胶-聚合胺复合材料树脂,对铜具有较好的选择吸附性能.本文研究了该树脂在模拟氯化钴电解液中深度净化除铜工艺.在Co2 ～80g/L、Cu2 0.5g/L～2.0g/L、pH 2～4、温度20℃～60℃的氯化钴电解液中,考察了该树脂对铜的吸附性能.结果表明,随料液pH增大以及温度升高,铜的交换容量增大;料液Cu2 浓度对交换容量影响较小;最佳吸附条件为:料液pH 4、接触时间30min,温度60℃.对比研究了盐酸、硫酸两种解析液,硫酸显示出更好的解析效果,最佳解析条件为H2SO4 2mol/L、解析接触时间40min.最佳工艺条件下,每亳升湿树脂对铜的工作交换容量及饱和交换容量分别0.439mol和0.508mol,铜的解析液峰值浓度为28g/L.     

Conductivity effect in electrorheological fluids

Based on conduction model and cubic particle model, the relationship between current density and shear yield stress of electrorheological (ER) fluids was calculated and compared with some reported experimental results. The conductivity of the insulating oils is found to have been changed by the mixed particles. Several ways to decrease insulating liquid conductivity and increase the conductivity ratio of ER fluids have been proposed to prepare ER fluids with high shear yield stresses but low current densities.     

A novel knotted cotton-thread carrier:Its potential use in achieving the biomass renewal of Phanerochaete chrysosporium in an immobilized growth system

In order to achieve an innovative strategy to renew the biomass of Phanerochaete chrysosporium in an immobilized growth system which can maintain white-rot fungi biomass, a novel knotted cotton-thread carrier was designed and made. By using a high-speed stirring apparatus under the conditions of 1400 r/min stirring speed for 6 min, mycelia immobilized on the knotted cotton-thread carriers were exfoliated completely and homogenized to a proper size. Furthermore, the homogenized mycelia from the immobilized m...     

100 TW激光与等离子体相互作用中质子背向发射的能谱测量

 用100 TW激光器产生的超短超强激光与5 μm薄膜Cu靶的进行打靶实验，测量了靶背法线方向产生质子的角分布和能谱。实验中采用辐射变色膜片HD810测量质子的角分布，用CR39和Thomson磁谱仪结合测量质子能量分布。测量结果表明：质子发射张角为10°左右，质子沿着靶背法线方向发射，在能量为570 keV处出现截断。通过测量质子能量分布验证了超短超强激光等离子体相互作用过程中靶背法线鞘层质子加速机制。     

超结构换热器网络综合优化的遗传/模拟退火算法-Ⅰ.改进的换热器网络通用解方法

在换热器网络的最优化设计中,为计算其年度总费用,必须首先得到网络中各换热器流体的进出口温度.本文提出了分级超结构换热器网络中流体温度的显式解析解.这一新算法大大降低了它对计算机内存的要求,使其能适用于大规模换热器网络的温度计算和最优综合.     

氧燃烧方式下矿物质与重金属行为特征的研究

在沉降炉试验台上,进行空气气氛及O2/CO2气氛燃煤试验,通过X射线衍射分析和ICP-AES分析研究了不同气氛下煤灰中矿物质组成及痕量元素的挥发特性.并根据热力学多相平衡原理对矿物质与重金属在两种气氛下的挥发行为进行了计算和比较分析.结果表明,氧燃烧气氛下的矿物质组成与空气气氛下并无明显不同,矿物质元素的蒸发气化亦没有受到明显的影响,但在氧燃烧气氛下矿物质的晶相向非晶相的转化得到了较大改善,有可能使电站锅炉沉积得到缓解;氧燃烧气氛下灰中痕量元素相比空气气氛下在底灰中有明显的富集.     

Properties of Neutron Stars Rotating at Kepler Frequency with Uniform Strong Magnetic Field

A uniform strong magnetic field is considered in calculating the properties of neutron star rotating at the Kepler frequency. The results show that the effect of the magnetic field on the properties of neutron star is evident, and the properties of the neutron stars rotating at the Kepler frequency can be used as a criterion to the equations of states of the neutron star matters.     

Directional Propagation Characteristics of Flexural Waves in Two-Dimensional Thin-Plate Phononic Crystals

The propagation characteristics of flexural waves in two-dimensional thin-plate phononic crystals （PCs） are analysed with the plane wave expansion （PWE） method to yield phase constant surfaces, which predict high directivity of flexural wave propagation for certain frequencies outside the band gap. The prediction is validated through the computation of the harmonic responses of a finite structure with 9 × 9 unit cells. The results indicate that directional propagation of flexural waves is an while specific effects of the directional propagation in inherent characteristic of two-dimensional thin-plate PCs a finite structure vary with the positions of excitations.     

1550nm工作波长新颖结构细径偏振保持光纤的制备及性能研究

对工作波长在1550nm，新型结构细径偏振保持光纤的制备与性能进行研究，并制备出拍长达到2．1mm、消光比达到28dB（1km）、工作波长在1550nm、低衰减且高强度的细径偏振保持光纤．     

电感储能加速器运行中电磁辐射的实验研究

发现了一个被普遍忽视的问题,在电感储能加速器运行中产生很强的电磁辐射.这种电磁辐射在一定距离范围内可以对测量仪器造成破坏.通过多次测量,发现此辐射主频在75MHz左右,频谱较宽,是一低频电磁波.以同轴电缆作为测量仪器的替代物,测量辐射场对同轴电缆的作用,罗氏线圈测得电流幅值达217mA.辐射可能是由回路LC振荡或者加速器中的电爆炸丝开关引起的.基于LC振荡和电爆炸丝的工作原理,分别讨论了辐射产生的物理过程.我们更倾向于认为辐射来源于开关导通引起的回路LC振荡.此外,辐射强度受电流的变化率影响,初级回路电流变化慢,次级回路变化快,这样产生了一弱一强的两个辐射信号.这些为进一步研究电感储能加速器运行中的电磁辐射及防护提供实验支持.