电荷转移多金属氧酸盐的研究进展

概述了多金属氧酸盐与ＴＴＦ类π电子有机给体形成的电荷转移盐研究的简短历史和新近进展,着重评述了它们的合成、结构、性质以及研究方法．     

一类拟线性第二边值问题的存在唯一性

本文在ｆ（ｔ,ｘ）,ｆｘ（ｔ,ｘ）,β（ｔ）连续,ｆｘ（ｔ,ｘ）≥－β（ｔ）,β（ｔ）≤π２０＋α２４,β（ｔ）π２０＋α２４,π０为方程αｓｉｎｘ２＋ｘｃｏｓｘ２＝０的最小正根条件下,证明了第二边值问题．ｘ＂＝αｘ＋ｆ（ｔ,ｘ）,ｘ（０）＝ａ,ｘ（１）＝ｂ对于任给实数α,ａ,ｂ都有唯一解     

Galectin-3 stabilizes heterogeneous nuclear ribonucleoprotein Q to maintain proliferation of human colon cancer cells

Comparative analysis of proteomes using 5-fluorouracil (5-FU)-resistant human colon cancer cell line revealed that decreased galectin-3 expression was significantly associated with retarded proliferation. However, in the presence of 5-FU proliferation rate of cells with suppressed galectin-3 expression did not differ from that of cells with normal galectin-3 expression, even galectin-3 suppression augmented apoptosis. Mechanism by which galectin-3 regulates cancer cell proliferation has been identified in immunoprecipitates of the anti-galectin-3 antibody. Heterogeneous nuclear ribonucleoprotein Q (hnRNP Q) was identified as a protein interacting with galectin-3. Interestingly, while galectin-3 protein was not affected by the hnRNP Q level, its suppression was accompanied by a decrease in hnRNP Q expression. The present study demonstrates that galectin-3 stabilizes hnRNP Q via complex formation, and reduction in the hnRNP Q level leads to slow proliferation and less susceptibility to 5-FU. Electronic supplementary material  The online version of this article (doi:) contains supplementary material, which is available to authorized users. B.C.Yoo; S-H.Hong; These two authors contributed equally to this work. Received 10 September 2008; received after revision 19 October 2008; accepted 07 November 2008     

椭圆三角函数及其在波形发生器中的应用

对普通三角函数进行了推广，给出了椭圆三角函数的定义，指出椭圆三角函数是周期函数，存在最大值和最小值，并在定义域内连续可导．对椭圆正弦函数进行了一系列仿真研究，结果表明，椭圆正弦函数可作为波形发生器的发生函数，可产生方波、普通正弦波、脉冲波、处于普通正弦波和方波之间的波形、处于普通正弦波和脉冲波之间的各种波形，且函数形式是一致的，波形的幅值、频率、初始相位都易于调整．这种波形发生函数能方便地进行数学处理与分析，波形发生原理能应用于各类相关波形发生场合．     

攀枝花方言词类考察

词类是词法的重要内容。本文在《攀枝花方言词形研究》的基础上,对攀枝花方言的词类作了全面考察。文中例举了各类词的土词词以及俗语的特殊说法和某些特殊用法。     

高校教学督导中加强对学生学习督导的探索

高校教育督导包括督教、督管、督学三个方面。针对目前高校教学督导工作中较少注意督学现状。从“督导学生”的角度出发,介绍了包括学生座谈、问卷调查、教学咨询、听课观察等直接和间接的督学实践过程;分析学生学习的实际情况;探讨督导工作中督学的作用、实践操作性、效果检测,以及如何用正确的观点、科学的态度来分析判断与评价学生的学习,做到督之有力,监之有方,导贯其中。     

A pyruvate kinase variant in different mouse transplanted tumors

Summary Mouse transplanted tumors, in contrast to normal tissues, contain a pyruvate kinase (PK) variant sensitive to the inhibitory action of L-cysteine and less sensitive to saturated fatty acids than the normal enzyme. In selected normal and tumor materials two fractions of PK were separated. Fraction A (20–30% (NH₄)₂SO₄ saturation) dominated in normal liver, and fraction B (50–60% (NH₄)₂SO₄ saturation) in skeletal muscles and Ehrlich ascites tumor. Only this fraction B from tumor material was sensitive to L-cysteine, and seems to contain a tumor-specific PK variant which might be considered as a marker of neoplastic transformation in a broad spectrum of mouse experimental tumors.     

Reply to the comment of Cheng et al.

We thank Cheng et al. for their interest in our paper “On linking climate to Chinese dynastic change: Spatial and temporal variations of of monsoonal rain” [1]. Our paper was written largely as a response to the suggestion made by Zhang P Z, et al. [2] that climate has a key role in affecting chapters of Chinese cultural history (e.g. the demise of the Tang, Yuan and Ming dynasties).
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锅筒内置换热器在供热系统中的应用及技术经济性分析

阐述锅筒内置换热器的工作原理及其在供热系统中应用的技术经济性分析,提出了在供热系统中防止锅炉腐蚀和结垢的一种经济适用的方法。     

喷流引射器对引射式气动窗口性能的影响

提出了的一种纵向喷流气动窗口——引射式气动窗口（ＪＩＡＷ）．研究了不同引射器结构尺寸下该气动窗口密封性能及输出光束质量，其中气动窗口光学性能采用一体化的定量测试设备——Ｈａｒｔｍａｎ激光光束诊断仪测试分析．实验表明，增加引射喷管喉道面积及混合室长度将有助于降低密封压力比和提高密封压力比的稳定性．不同的引射喷管喉道面积和混合室长度的气动窗口均能给出优良的光束质量