InGaAsP/InP有源双稳放大器的实验研究

本文报导了室温下F—P型InGaAsP/InP双异质结半导体激光放大器的双稳态效应,放大器的增益为20dB。     

排列互比法用于超精测角的研究

作者分析了我互比法现行的两种数据处理方法的缺点，提出了应用最小二乘法原理推导出合理的数据处理方法。本文还首次从理论上阐明了排列互比法测量结果中出现一次谐波系统误差的原因，提出了减少和消除这一些系统误差的方法，并给实验验证。     

无横梁高刚性轧机的结构分析

本文介绍了无横梁高刚性轧机的新颖结构，分析了该轧机高刚性及轴承长寿的原理。该轧机在现场使用中，取得了良好的效果。     

集群系统与公用网互连的仿真模型和模拟算法

在讨论ＭＰＴ１３２７信令的集群移动通信系统与国内Ｎｏ．７信令的ＰＳＴＮ网间互连，帝现两种信令配合中，研究了集群系统的仿真模型和模拟算法，同时模拟出整个集群系统的工作情况，运行结果证实了所提方案的可行性与准确性。     

红外热成象技术在股骨头坏死疾病针刺疗法中的应用

红外热成象技术可以有效地用于股骨头坏死疾病的诊断和针刺治疗效果的评价，效果优于其它常规方法。     

Synthesis and Crystal Structure of RE[CH_2(CH_2)_4CONC_4H_9]_3(NO_3)_3(RE=Dy,La)

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CBF beta-SMMHC, expressed in M4Eo AML, reduced CBF DNA-binding and inhibited the G1 to S cell cycle transition at the restriction point in myeloid and lymphoid cells

CBF beta-SMMHC is expressed from the inv(16) chromosome in M4Eo AML. Mice lacking CBF subunits or expressing the CBF beta-SMMHC or AML1-ETO oncoproteins failed to develop definitive hematopoiesis. To investigate these effects on hematopoiesis, we expressed CBF beta-SMMHC from the metallothionein promoter, in both 32D cl3 myeloid cells and Ba/F3 B-lymphoid cells. Addition of zinc increased CBF beta-SMMHC levels more than tenfold, with higher levels evident in Ba/F3 lines. Levels obtained in 32D cl3 cells were similar to those of endogenous CBF beta. Indirect immunofluorescence revealed zinc-inducible speckled, nuclear staining in Ba/F3 cells and diffuse nuclear staining in 32D cl3 cells. CBF beta-SMMHC reduced endogenous CBF DNA-binding fivefold in both cell types, increased cell generation time 1.9-fold, on average, in 32D cl3 cells and 1.5-fold in Ba/ F3 cells and decreased tritiated thymidine incorporation into DNA correspondingly. CBF beta-SMMHC increased the proportion of cells in G1 1.7-fold, on average, in 32D cl3 and Ba/F3 cells, and decreased the proportion of cells in S phase by a similar degree. CBF beta-SMMHC induced a marked increase in hypophosphorylated Rb, but did not alter IL-3 Receptor alpha or beta subunit levels. Neither apoptosis nor 32D differentiation was induced by zinc in IL-3 in these lines. Induction of CBF beta-SMMHC in 32D cl3 cells did not inhibit their differentiation to neutrophils or their expression of myeloperoxidase mRNA in G-CSF, and did not produce an eosinophilic phenotype. Additional, proliferative genetic changes in M4eo AMLs might potentiate inhibition of differentiation by CBF beta-SMMHC by allowing its increased expression.     

导电环接触电阻的改进测量方案

介绍了导电环接触电阻测量方法的现状,提出了在测量过程中防止导线缠绕的两种改进方案,通过分析验证,说明改进后的测量方案能够很好的完成导电环接触电阻的测量.     

采取具体措施 发挥教研室的职能作用

本文就如何发挥高校教研室的职能作用记述了本教研室所采取的具体方法和措施。     

Recovery of second-order optical nonlinearity in annealedproton-exchanged LiNbOx

The second-order nonlinear coefficients measured in proton-exchanged LiNbO₃ as a function of annealing time are discussed. Measurements of reflected second-harmonic power indicate that the second-order nonlinear coefficient d₃₃ is reduced to 60% of the bulk value as a result of proton exchange in pure benzoic acid. It is also shown that annealing restores the d-coefficients to almost the original value of the virgin crystal. For example, recovery to ~90% of the bulk value was obtained for a sample with a 0.3-μm-bulk proton-exchanged layer, annealed for 10 h at 350°C