采用相位共轭干涉法测定饱和吸收染料高分子膜三次非线性极化率的位相

发展了一种新型相位共轭干涉法可用于简单方便地测定介质三次非线性极化率（χ（３））的相位。文中用这种方法研究了二种染料掺杂高分子膜χ（３）的相位，发现由饱和吸收效应产生的χ（３）的相位，当波长远离吸收峰时，由─π／２趋于─π，而由光到漂白效应产生的χ（３）的相位都落在─１７／１８π附近。     

Spiro－Oxaziue染料掺杂高分子材料光致变色效应的研究

报道Ｓｐｉｒｏ－Ｏｘａｚｉｕｅ染料掺杂高分子（ＳＯ／ＰＶＡ）膜具有很强的可逆光致变色效应，通过对这种高分子膜吸收光谱的测试，证实ＳＯ分子具有二个特征吸收带，一个在３６０ｎｍ，另一个在５９５ｎｍ，分别对应于二个分子异构体ＳＯ１和ＳＯ２，有关这种ＳＯ／ＰＶＡ光致变色过程的研究给出了ＳＯ１对紫外光和ＳＯ２对可见光（波长在５１５ｎｍ）的吸收系数分别为１．２ｃｍ２／Ｊ和６×１０－２ｃｍ２／Ｊ，ＳＯ２的寿命为３８ｓ。最后本文给出了采用这种ＳＯ／ＰＶＡ膜实现紫外－可见光图像转换和空间光调制操作的实验演示结果     

EFFECTS OF MONOCLONAL ANTIBODY ANTIEGF RECEPTOR ON HUMAN NASOPHARYNGEAL CARCINOMA CELL AND OTHER TUMOR CELLS

Three anti-EGF receptor MoAbs were used in these studies. Administration of MoAbs 3 and 176 inhibited tumor formation in nude mice by CNE-2, a poorly differentiated nasopharyngeal carcinoma cell line and A431, an epidermoid carcinoma cell line. When the same MoAbs were used in treatment against HeLa, a cervical carcinoma, tumor growth was not affected. The number of EGF receptors and apparent dissociation constants for ~(125)I-EGF on CNE-2 and A431 was 1.3×10~(?)/cell (Kd 7.7×10~(-8)mol/L) and 1.4×10~6/cell(Kd 2.4×10~(-9)mol/L), respectively. Both MoAbs 3 and 176, capable of competing with EGF for receptor binding, showed significant tumor growth inhibition. MoAb 101 was incapable of blocking the binding of EGF to its receptor, and not as effective as MoAbs 3 and 176 in tumor growth inhibition. Our observation is that the MoAb anti-EGF receptor is cytostatic rather than cytocidal, in vitro against CNE-2 and A431.     

TRANSGENIC RICE PLANT OF A SUPERIOR CHINESE CULTIVAR Zhonghua NO. 11 CONTAINING THE B. t. δ-ENDOTOXIN GENE IN ITS GENOME

The B. t. δ-endotoxin protein gene has been transferred into a commercial rice variety Zhonghua No. 11 by the pollen-tube pathway method. The expression of β-glucuronidase activity in the transgenic plant (D_3) was confirmed by histochemical analysis. Since the GUS gene was translationally fused with the B. t. δ-endotoxin protein gene in the recombinant plasmid pGYCK63, the expression of the GUS gene offered evidence for the expression of the δ-endotoxin protein gene in the transgenic rice plant.     

H_q~p（p≥1，1＜q≤2）空间有理函数最佳逼近的正定理

本文在按面积加权平均的Ｈｐｑ（ｐ≥１，１＜ｑ≤２）到空间中，在多项式最佳逼近阶的估计的基础上，用有理函数逼近多项式，得到了以在单位圆外预先给定的点列｛αｋ｝中的任意有限个点为极点的有理函数逼近高阶导函数属于该空间的解析函数阶的估计的正定理．第三节提供了尚待研究的问题．     

光电直读光谱仪局部恒温装置的研制

用泡沫平板制作一个隔热性能好的罩子,将光电直读光谱仪光学系统罩在里面。用安全电路“可控硅控温”和“电接点温度计控温”,维持罩内温度恒定。经六年使用证明,基本保证了光电直读光谱仪诸分析线对准各出射狭缝,大大提高了用苏制(?)-28中型石英摄谱仪改装成的光电直读光谱仪的分析精度和速度。局部恒温装置的制作用三角铁按图1所示形状及所需尺寸焊接。罩子外层用1.5毫米铝板,夹层为50毫米厚泡沫平板,内层为纤维板,用螺丝固紧:上     

负载1-丁基-3-甲基咪唑氯的固体炭磺酸催化水解纤维素

纤维素作为可再生资源,其催化水解得到的平台化合物对缓解能源压力具有重要的意义。 本文以生物质竹子为原料选择700 ℃预碳化、150 ℃磺化得到的固体炭磺酸为基体,负载1-丁基-3-甲基咪唑氯后得到离子液体功能化固体炭磺酸催化剂。 结果表明,催化剂最优条件下水解纤维素得到的总还原糖产率相对于固体炭磺酸提升了15.2%,循环使用后,依然表现出良好的催化性能。     

士的宁分子印迹整体柱的制备

以士的宁为模板分子，甲基丙烯酸为功能单体，乙二醇二甲基丙烯酸酯作为交联剂，甲苯和十二醇混合溶液为致孔剂，用原位分子印迹技术，合成了士的宁分子印迹整体柱。通过优化合成条件，结果显示：模板分子、功能单体与交联剂之间的比例以1：4：16最佳，致孔剂中甲苯的最佳含量为18％（V/V)；对士的宁整体柱的色谱条件包括流动相组成、流速、柱温等进行了考察，并用于士的宁和马钱子碱的分离，其分离因子为3．5。