铁不能形成＋8氧化态化合物

本文应用两种思路，对铁为什么不能形成 8氧化态化合物，给予了适当的解释。这对无机化学教学有很大帮助。     

Fe3N和Fe2N体状化合物合成及其磁特性

纯铁粉在一定比例的氨和氢的气氛中与氮可以固气反应形成Ｆｅ３Ｎ和Ｆｅ２Ｎ体状化合物，研究了氨气和氢气的比例，温度和时间对反应产物的影响规律，进而确定了形成单一均匀的体状Ｆｅ３Ｎ和Ｆｅ２Ｎ化合物的条件，利用振动样品磁强计，磁天平和热磁分析等手段检测了Ｆｅ３Ｎ和Ｆｅ２Ｎ的磁特性Ｆｅ３Ｎ化合物饱和磁化强度（室温）为１３４Ａｍ＾２／ｋｇ居里温度为２６０℃而Ｆｅ２Ｎ化合物饱和磁化强度为２３．１Ａｍ＾２／ｋｇ属     

钯铁合金镀液和镀层中钯和铁的同时测定

在酸性介质中，铁和钯分别与亚硝基Ｒ盐（ＮＲＳ）络合形成绿色的Ｆｅ－ＮＲＳ和红色的Ｐｄ－ＮＲＳ．利用它们的吸收光谱性质的差异，可用双波长系数法在水相中同时测定Ｆｅ和Ｐｄ．实验证明，两络合物的摩尔吸光系数分别为１．９４×１０４（对铁）和１．６３×１０４（对钯），线性范围分别为０～６０μｇ／ｍＬ和０～７０μｇ／ｍＬ，相对标准偏差小于０．５％，回收率为９６％～１０５％．本方法简便、快捷、准确、重现性好．适用于合金镀液及镀层中铁和钯的同时测定．     

船舶螺旋桨轴油液监测的研究

介绍了对船舶螺旋桨轴实施油液监测的必要性，以两条不同类型的船舶为例，采集油样并进行检测分析。得到了螺旋桨轴正常状态下主要磨损元素的浓度和主要磨损类型磨粒的显微特征，这些研究树指导油液监测技术在船舶机构中的应用具有重要意义。     

正交设计研究锆铁红色料的合成

采用正交设计实验法研究了配方及工艺制度对锆铁红色料合成的影响，分析了各因素对锆铁红色料合成的影响趋势，得到了主次影响因素，并指出主要因素为：合成温度、矿化剂的种类、预处理方式，找到了利用常规的陶瓷颜料制备工艺合成锆铁红色料的最佳配合及合成工艺制度。详细讨论了锆铁红色料合成的影响因素，并探讨了锆铁红色料合成过程中各因素作用的机理，为锆铁红色料合成及生产提供了切实可行的实际生产和理论依据。     

吸光光度法测定饮用水中总铁的改进

本文应用邻菲罗啉吸光光度法对饮用水中总铁进行了测定，在试剂空白，取样方法及水样用量方面进行了改进，提高了方法的精度，取得了满意结果。     

New secondary batteries and their key materials based on the concept of multi-electron reaction

Facing the significant applications in energy field, this paper introduces how to construct new high specific energy secondary batteries based on the concept multi-electron reaction and by designing multi-electron electrode materials. Recent progress on those new secondary batteries and their key materials based on the theory of multi-electron reaction are overviewed. Representative multi-electronic electrode materials, such as metal borides, metal fluorides, sulfur composite electrode materials and ferrates are briefly introduced, as well as the new secondary battery systems constructed with these materials. Thus gives the significance of the development based on multi- electron reaction mechanism of secondary batteries and their key materials for new chemical battery systems and related energy materials.     

穿越大脑:故事已然发生

<正>科学家们正在运用分子生物学工具撬开人体内最后的生物化学屏障——血脑屏障。哪种方法是最成功的,或许取决于哪种类型的分子进入大脑……故事已经发生,请开卷一览。当神经学家赖安·瓦特斯(Ryan Watts)在谈论受体介导穿胞作用时,就像一位乐团指挥一般描述着他最喜欢的音乐篇章。对他来说,分子在受体辅助囊泡运输下穿越细胞膜是一种艺术形式,更重要     

Numerical modeling and simulation of temperature distribution uncertainty subject to ferromagnetic thermoseeds hyperthermia

In the process of ferromagnetic thermoseeds mediated magnetic induction hyperthermia, the tempera- ture distribution in the tumor region is a key factor to determine the therapy effect. During the preoperative treatment planning, discrepancies of the treatment parameters may lead to the temperature distribution uncertainty within the target area. Inaccurate prediction of temperature distribution may induce the treatment failure; therefore, it would be significant to investigate the uncertainty of tissue temperature prediction caused by the disturbance of calculation parameters. In this paper, 3D temperature field and necrosis zone of tissues in ferromagnetic thermoseeds hyperthermia are simulated by the finite volume algorithm, and effects of parameter uncertainties on the temperature distribution are revealed. Results show that selecting appropriate magnetic field parameters for treatment is a priority to guarantee therapeutic effect. Thermoseed properties and blood perfusion rate are the obvious disturbing terms for temperature distribution, while the metabolic heat of bio-tissues can often be ignored within limits. Our investigation is of importance for guiding reasonable and optimal preoperative treatment planning.     

关于磁滞回线实验中的电阻取值

本文从《示波器法测绘铁磁材料的磁化曲线和磁滞回线》实验电路出发，定性定量地分析了电阻R1和R2的取值范围，对于提高教学效果提供了一定的参考。