西昌市养殖灭螺防治日本血吸虫病试点示范技术研究

为探索养殖鱼、鸭生物灭螺防治日本血吸虫病技术,在全市选点示范扩建鱼塘和沟渠稻田放养鱼,鸭采食钉螺进行生物灭螺防治血吸虫病,通过五年的示范研究和推广,使疫情得到显著控制,钉螺感染率和感染钉螺密度分别下降71.84%,80.00%,耕牛和人群血吸虫病感染率分别下降73.36%,48.05%,社会经济和生态效益明显。     

Tailoring Solution Cast Poly(3,4‐dioctyloxythiophene) Transducers for Potentiometric All‐Solid‐State Ion‐Selective Electrodes

A novel concept of tailoring potentiometric responses of all‐solid‐state ion‐selective electrodes was introduced. The effect of composition and resulting properties of the conjugated polymer transducer, placed between the electrode support and ion‐selective membrane, on analytical characteristic of obtained sensors was studied.     

基于XGM的SOA波长变换器噪音特性分析及优化设计

利用动态载流子恢复时间可以精确模拟基于交叉增益调制的SOA全光波长变换器的饱和增益效应,本文将SOA分段ASE噪音功率和分段动态模型结合,得到沿长度分布的ASE噪音功率,并讨论了偏置电流、泵浦光和探测光的波长、功率、SOA长度对消光比和信噪比的影响理论计算结果表明,大的偏置电流有利于提高消光比和信噪比;对于一定的输入波长,相对较大的泵浦光和相对较小的探测光变换效果好;SOA的长度存在最佳值.     

移动省内干线网组网设计的探讨

文章介绍了光通信技术及网络的发展趋势,阐述了密集波分复用(DWDM)技术产生的原因和基本原理,论述了利用DWDM系统在移动省内干线传输网的组网设计,包括组网设计步骤的介绍、设计需考虑相关技术参数和移动通信各类业务带宽需求预测的方法等,结合安徽移动省内干线网的实例,对DWDM系统组网的建设方案和实际使用效果进行了总结。     

基于锯齿波偏频的谐振式光纤陀螺标度因数测试

针对转台测试谐振式光纤陀螺标度因数时存在的测试精度受限于转台性能影响的问题,提出一种基于锯齿波等效输入的陀螺标度因数测试方法.通过在相位调制器上叠加锯齿波偏频信号用于模拟角速度输入,分析了实际转台输入和模拟角速度输入下谐振式光纤陀螺闭环传递函数,推导了偏频锯齿波信号参数与实际输入角速度的对应关系,理论证明了其技术可行性.搭建了基于锯齿波偏频的陀螺标度因数测试系统,对研制的陀螺样机进行了标度因数及非线性度测试,基于锯齿波偏频方法测得的陀螺标度因数与实际转台测试结果基本一致,且标度因数非线性度从0.42%优化到0.26%.研究表明基于锯齿波偏频的谐振式光纤陀螺标度因数快速标定测试方法不仅可以精确测得标度因数,还可有效抑制转台振动等环境干扰引入的测量误差.     

ICP-AES法测定全元素肥料中的微量元素

本文采用高频等离子体发射光谱法测定了全元素肥料中的多种微量元素含量。选择了合适的实验条件，方法简便、快速、可靠，适用于多元素肥料及液肥的分析，结果令人满意。     

Preparation of all solid-state potentiometric ion sensors with polymer-CNT composites

This paper presents the simplest method so far to prepare all solid-state ion-selective sensors with excellent potential stability and sensing properties. With the aid of block polymer PEO-PPO-PEO (F127) multi-wall carbon nanotubes (MWCNTs) facilitating the ion-to-electron transfer can be well-dispersed in different polymer matrices including plasticized poly vinyl chloride, plasticizer-free methacrylate copolymer and PVC-ionic liquid, which leads to a general approach to prepare all solid-state ion-selective sensors by simple one-step drop casting method.     

Determination of the lifetime of the mercury 63P1 state

A pulsed tunable dye laser was used for a high resolution experimental study of mercury fluorescence from the 6³P₁ state. The output of the dye laser was frequency doubled into the 253.7 nm region using a potassium penta-borate crystal. Exponential decays were observed for each of the five individual components of the hyperfine structure separately and the effects of the trapping of resonance radiation on the observed lifetime of the 6³P₁ state of mercury were investigated for each resolvable component. Within experimental error, the natural radiative lifetime of the 6³P₁ state was found to be independent of the hyperfine component irradiated and a value of 122±2 nsec was obtained, consistent with results found by other methods.     

The ligand-field spectrum of Fe3+ in garnets

The ligand-field spectra of garnets bearing Fe³⁺ exclusively at the octahedral as well as at the octahedral and tetrahedral sites have been studied at energies between 8000 and 30 000 cm^?1. The absorption bands up to 28 000 cm^?1 have been assigned by comparison of experimental and calculated transition energies obtained by a complete solution of the d⁵ energy matrices. The Racah parameters of Fe³⁺ in both positions have been reinterpreted using a constant $\text{C}\text{B}$ ratio evaluated from the gaseous Fe³⁺ ion. It was found that the octahedral B parameters are always larger than the tetrahedral ones. The results are consistent with isomer shifts of ⁵⁷Fe and the observed structural features in oxide garnets.