影响纳滤膜分离性能的因素分析

本文概述了操作条件（压力、时间、回收率、流速）和物料性质（分子量、共离子、离子浓度、ｐＨ值、道南离子效应）对纳滤膜分离性能的影响，并分析了纳滤膜的分离特点。     

干扰对微机电力保护系统的影响及对策

针对微机电力保护系统的构成,就干扰对其产生的影响进行了分析,结合实际通过装置内部的合理分布,隔离屏蔽,“地”的处理,冗余设计,信号舆的处理等措施,对干扰加以消除,以保证微机保护的安全可靠运行。     

用纳滤膜“浓缩”芦荟原汁的实验分析

本文分析了芦荟原汁采用纳滤膜分离成的“芦荟浓缩液”与“芦荟水”两个组分中各种成份含量比较 ,为膜分离法在芦荟原汁加工中的应用提供了理论依据。     

基于多目标蝙蝠优化的高光谱图像解混算法

由于高光谱图像的丰度特性,盲源分离算法 不能直接用于高光谱图像解混。同时,在解混过程中用 梯度算法对目标函数进行优化时易陷入局部最优。为此,本文提出了一种基于多目标蝙蝠优 化算法的高光谱图 像解混算法。该算法将高光谱图像模型中存在的丰度非负约束及丰度和 为一约束作为解混的两个目标函数, 将解混问题转化为对目标函数的优化问题,同时引入多目标蝙蝠优化算法来求解,从而实现高光谱图像解 混。实验结果表明,本文算法能有效解决上述问题,并且当改变图像的信噪比 、像元纯度和像素数时,观察光 谱角距离与均方根误差值的变化情况,与其它解混算 法相比,本文算法具有更高的解混精度和很好的抗噪性,在像元纯度很低的情况下也有很好 的性能。     

烧焙法分解—阳离子交换分离和质谱法分别测定植物试样中的微量元素

采用碳酸钠—氧化锌氧化焙烧以氧化分解植物叶片粉末,被转化为无机F、Cl、S、Se、Br、I等被烧结剂吸收,进而用水浸取,F-、Cl-、SO2-4、Se2、Br-、I-进入溶液,经阳离子树脂交换分离,离子色谱法测量F-、Cl-、SO2-4,ICP - MS测量Se2+、Br-、I-.方法快速、简便,具有精密度好、准确度高...     

Supported and laminated Pd-based metallic membranes

Composite metallic membranes for the separation and the production of hydrogen have been prepared by using thin Pd–Ag foils (with silver content 23–25 at%) reinforced by metallic (stainless steel, nickel, niobium) structures. Essentially, the cost reduction for the Pd-based membranes has been achieved through two different methods used in the production of composite membranes. A procedure of diffusion welding was used to join Pd–Ag thin foils with expanded metals (stainless steel) and perforated metals (nickel): the thin palladium foil in these membranes assures both the high hydrogen permeability and the perm-selectivity, while the metallic support provides the mechanical strength. A second procedure investigated for the production of composite laminated membranes consists in coating non-noble metals with very thin palladium layers: in this case, Pd–Ag foils have been applied over nickel, iron and niobium sheets through the diffusion welding procedure, and then the thickness of the laminated metal has been reduced down to the desiderated value by cold rolling.

Permeation tests carried out on these composite membranes have shown hydrogen permeability data to be in accord to previously studied literature; furthermore, the complete hydrogen selectivity, and the observed chemical and physical stability, have demonstrated the applicability of these procedures to processes for separating and producing pure hydrogen.     

小麦淀粉与谷朊粉生产

指出了小麦淀粉与谷朊粉生产的重要性；简要叙述了小麦淀粉与谷朊粉生产的历史、典型工艺及最新动态。着重介绍了韦斯伐里亚公司的三相卧螺工艺，并对新旧工艺进行对比，指出了小麦淀粉与谷朊粉生产中的关键问题，并进行了探讨。     

某铁矿选矿试验研究

针对某铁矿矿石主要为磁铁矿和赤铁矿,采用弱磁-强磁-反浮选的磁浮联合工艺流程,获得了弱磁精矿品位为66.07%,回收率为50.79%;强磁-反浮选精矿品位为61.37%,回收率为29.22%,总回收率为80.01%的试验指标。