永济蒲津渡口遗址保护工程水文地质条件及处理方案

永济蒲津渡口遗址保护工程位于黄河冲积河漫滩上，地下水十分丰富，径流条件好；在保持其原地、原貌、原位不变的情况下，如何处理建筑物的防水问题，将是很关键的。本文通过对里外抽水试验资料的综合分析，并运用裘布依完整井稳定流理论公式及泰斯完整井非稳定流理论等方法对场区含水层渗透能力进行了计算、评价，提出了较为合理的处理方案。     

悬板区流场特性及其对输沙的影响

通过物理模型对悬板区流场的测试分析，以及整体模型的浑水输沙试验，揭示了悬板分层式引水渠首“引清”及高效输沙的内在原因，是悬板的设置改变了悬板区水流结构，即悬板水平分割水流，引上层清水，下层由明流生成为有压流，提高了底部流速及流速梯度，获得较高输沙能量，使其高效输沙。     

科学施肥,提高化肥利用率与建议

为提高我国化肥的利用率，希望能做到科学合理施肥，同时提出了几点可行的建议。     

Isolation and identification of DNA fragments frequently deleted from tumor cell lines of human esophageal cancer

OBJECTIVE: To clone tumor suppressor genes associated with human esophageal cancer (EC). METHODS: DNA fragments deleted from cell lines of esophageal cancer EC8712 and EC8733 were isolated by using modified genomic substractive hybridization. Twenty EC tissues paired with adjacent normal mucosa were analysed by Southern blot and PCR with these fragments as probes. RESULTS: Seven DNA fragments deleted from EC cell lines obtained were named as 12H1, 12H2, 33H3, 33H4, 12B1, 33B2 and 33B3. Sequencing revealed their size of 512bp, 428bp, 509bp, 355bp, 680bp (partially sequencing), 519bp and 425bp, respectively. 12H1 and 33H3 showed high homology (98%) to a new repeated sequence in human genome. 33H4 displayed 87% nucleotide identity with human alphoid-like repetitive sequence located on chromosome 17. 12B1 was homologous (90%) to LINE 1 transoposon containing two open reading frames. 12H2, 33B2 and 33B3 were novel sequences. These DNA fragments were deleted in 20%-60% of EC tissues and in 10%-20% of adjacent mucosa. CONCLUSIONS: Loss of 33H4 may be accompanied by deletion of an adjacent gene. 12B1 as transposon may suppress the tumorigenesis by activating suppressor genes or/and by inactivating oncogenes. 12H1/33H3, 12H2, 33B2 and 33B3 may be candidates of tumor suppressor genes associated with the development and the progression of esophageal cancer.     

艺术设计使网版印刷锦上添花

曾几何时,网版印刷在国人的眼睛里还只是可以在小作坊里印各种条幅、工作服以及一些简单标牌的印刷方式。但是,如今由于国内网版印刷行业的飞速发展,技术设备的不断更新,国际交流的日益频繁,网版印刷已经跃然成为国内印刷界很重要的一个门类。特别是近几年,网版印刷与其他印刷的共同发展,相互交融,使得网版印刷进入了一个新的发展阶段。     

昆山市第一人民医院开发区分院

现代化综合医院部门繁多,流线相互穿插,面积及规模庞大,内部关系错综复杂,常使病患在其中迷失方向。将复杂的问题简单化,以提高医院的运转效率,是设计综合医院的关键所在。     

流域年均含沙量的PP回归预测

应用投影寻踪回归技术，建立了流域年均含沙量的预测模型。用降雨量和年平均径流等４个因子瓣某流域平均含沙量的ＰＰＲ预测结果的拟合合格率达１００％，预留检验样本报准率为７５％，表明ＰＰＲ用于泥沙输移规律的预测研究是可行的。     

An Electroabsorption Modulator Monolithically Integrated with a Semiconductor Optical Amplifier and a Dual-Waveguide Spot-Size Converter

A semiconductor optical amplifier and electroabsorption modulator monolithically integrated with a spot-size converter input and output is fabricated by means of selective area growth,quantum well intermixing,and asymmetric twin waveguide technology.A 1550～1600nm lossless operation with a high DC extinction ratio of 25dB and more than 10GHz 3dB bandwidth are successfully achieved.The output beam divergence angles of the device in the horizontal and vertical directions are as small as 7.3°×18.0°,respectively,resulting in a 3.0dB coupling loss with a cleaved single-mode optical fiber.     

中国移动收购华润万众迈出3G与国际化第一步

10月5日,香港的移动运营商华润万众股价出现异动,在港交所的要求下,这家用户数排在各运营商第四位的运营商在股票停牌后发布公告称,公司股东华润集团、华润万众执行董事梁启雄（包括其关联方）,已经于2005年10月4日与“中国移动（香港）有限公司”签订了无约束力的三方意向性谅解备忘录,中国移动（香港）有限公司将现金出资收购华润集团和梁启雄分别持有华润万众48%和18.54%的股份,收购价为每股4.55港元.     

A novel multifunctional phosphorous and nitrogenous reactive flame retardant toward epoxy resins by one-pot method

Epoxy resin (EP) has attracted considerable attention in packaging, electronic devices, aerospace, and coatings fields owing to its remarkable chemical and physical performance. However, the inherent flammable performance and unfavorable brittle nature seriously restricted its application in sophisticated industry. Herein, an efficient reactive 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO)-based flame retardant (DB-DAD) was prepared by a facile “one-pot” method. Due to their synergistic gas-phase and solid-phase flame-retardant effects, DB-DAD modified EP composites (EP/DB-DAD composite) easily achieved UL-94 V-0 ratings, and an EP/DB-DAD composite with a 0.32 wt% phosphorus content had an excellent (30.2%) limiting oxygen index. In addition, the amounts of heat and smoke decreased by 28.1% and 24.8%, respectively. Due to the introduction of long and flexible aliphatic chains, the EP/DB-DAD composites exhibited satisfactory mechanical properties, the flexural and tensile toughness of EP/6% DB-DAD were 82.5% and 62.2% higher than those of neat EP, respectively. Furthermore, EP/DB-DAD composite showed good transparency (>85%) and favorable UV shielding performance. The EP/DB-DAD composite with good comprehensive performance is extremely promising to accelerate EP application in high-tech industries.