溅射法制备Al/Pb金属多层膜

通过直流二极溅射法制备了具有不同调制波长和周期的Al／Pb金属多层膜。分别通过扫描电镜、X-射线衍射试验以及能谱对多层膜的表面形貌、断面形貌、结构和组成进行了分析。结果表明,所制备的Al／Pb纳米多层膜既无新相生成也无非晶相产生;在亚微米尺寸范围内,铝和铅的微粒分布均匀;在纳米尺寸范围内,形成了Pb对Al的包覆。     

运用模糊综合评判方法定量研究断层封闭性

综合考虑影响断层封闭性的7种主要因素,运用模糊评判方法对夏口断裂带中部3条主要控油断层的封闭性进行了定量研究。综合评价结果与实际勘探相符,表明评判方法是可靠的,可为工区的油气勘探提供科学依据。     

房地产项目设计思考——建筑师应加强对房地产市场的关注

随着房地产业发展的日新月异,房地产企业的竞争也变得日趋激烈,加之消费者对房地产产品品质要求的提升,这就对房地产产品开发过程中的一个重要角色——建筑师,在房地产产品设计上提出了更高的要求。该文从房地产产品自身特点、房地产投资主体和使用主体三个方面分析了市场对房地产产品设计的影响,提出并强调建筑师要想在房地产项目规划设计上进行创新,必须首先使设计的产品最大程度地满足市场需求。旨在呼吁建筑师在进行房地产项目的设计时,必须加强对房地产市场的关注与了解,使建筑设计理念能够服从并实现于市场中。     

添加纳米Y2O3的ODS-HT9钢的显微结构和性能

为了研究纳米Y₂O₃对HT9钢的显微结构和力学性能的影响,采用粉末冶金工艺,制备了纳米Y₂O₃含量为0.1%~0.9%的ODS-HT9钢样品,测定了样品的抗拉强度、伸长率、维氏硬度等力学性能,利用透射电子显微镜（TEM）观察和分析了样品中纳米Y₂O₃颗粒的分布状况、形状和相结构,利用扫描电子显镜（SEM）观察了样品拉伸断口的形貌。研究表明,球磨和热压烧结后,纳米Y₂O₃颗粒能够均匀地分布于基体中,相结构和形状未发生明显变化。弥散分布的纳米Y₂O₃硬质颗粒,具有明显的弥散强化作用,导致ODS-HT9钢的抗拉强度和维氏硬度随Y₂O₃含量的增加而显著增加,伸长率显著降低。Y₂O₃含量低于0.7%时,样品以韧性断裂为主,进一步增加含量,断裂方式将由韧性断裂转变成脆性断裂。纳米Y₂O₃含量为0.3%~0.5%的ODS-HT9钢,抗拉强度达到了913~936 MPa,伸长率为10.7%~11.2%,具有良好的综合力学性能。本文研究结果有助于ODS-HT9钢高温性能的研究及其在反应堆中的实际应用。      

成都金融城城市设计:立体分流、多维造景

根据CBD具有的交通立体化、景观多维化特征,成都金融城城市设计提出"流、系、连、织"的规划理念,采用交通立体分流和空间多维造景的设计策略,即从需求多样性分析出发,实现区内外的交通有效衔接、立体分流,精心组织交通入口;从成都的自然河川特征出发,布局总体结构,立体改造地形,营造多样化界面;打造以人行为目标的金融城。     

Genome-Wide Identification,Expansion, and Evolution Analysis of Homeobox Gene Family Reveals TALE Genes Important for Secondary Cell Wall Biosynthesis in Moso Bamboo (Phyllostachys edulis)

The TALE gene family is a subfamily of the homeobox gene family and has been implicated in regulating plant secondary growth. However, reports about the evolutionary history and function of the TALE gene family in bamboo are limited. Here, the homeobox gene families of moso bamboo Olyra latifolia and Bonia amplexicaulis were identified and compared. Many duplication events and obvious expansions were found in the TALE family of woody bamboo. PhTALEs were found to have high syntenies with TALE genes in rice. Through gene co-expression analysis and quantitative real-time PCR analysis, the candidate PhTALEs were thought to be involved in regulating secondary cell wall development of moso bamboo during the fast-growing stage. Among these candidate PhTALEs, orthologs of OsKNAT7, OSH15, and SH5 in moso bamboo may regulate xylan synthesis by regulating the expression of IRX-like genes. These results suggested that PhTALEs may participate in the secondary cell wall deposition in internodes during the fast-growing stage of moso bamboo. The expansion of the TALE gene family may be implicated in the increased lignification of woody bamboo when divergent from herbaceous bamboos.     

弹性体和成核剂协同改性聚丙烯研究进展

简述了聚丙烯(PP)成核剂的分类及其增韧改性机理,针对近年来α成核剂/弹性体、β成核剂/弹性体、复配型成核剂/弹性体协同改性PP的研究成果进行了综述,并展望成核剂/弹性体改性PP的研究前景。     

石油焦制备活性炭工艺条件的优化及其孔结构表征

以独山子石油焦为原料,以氯化锌为活化剂,采用微波加热方式制备活性炭,通过碘吸附、苯吸附等考察所制活性炭的吸附性能,并对活性炭的制备工艺条件进行筛选和优化。结果表明：微波加热法制备活性炭时,最佳工艺条件是：氯化锌、石油焦、煤沥青的质量比为1．5：7．5：1,微波功率1300W,辐照时间6min。所得样品比表面积1095．7m^2／g,碘吸附值673．7mg／g,苯吸附值781．1mg／g,强度20．3N。通过与电炉法对比发现,微波加热和电加热制备的活性炭孔结构不同,微波法制备的活性炭在比表面积、孔径分布等方面优于电炉法制备的活性炭。     

Tailoring of surface oxygen‐containing functional groups and their effect on adsorptive denitrogenation of liquid hydrocarbons over activated carbon

The objective of this study is to get a fundamental understanding of role of surface oxygen‐contained functional groups (OCFG) in adsorptive denitrogenation (ADN) of liquid hydrocarbons over activated carbon, and thus to improve the ADN performance of activated carbon through modification of surface chemistry of activated carbon. A set of activated carbon samples with different amount and distribution of OCFG was prepared by oxidative modification and thermal treatment of a commercial activated carbon. The prepared activated carbons were characterized by the temperature‐programmed desorption coupled with mass spectrometry for the concentration of various OCFG, and evaluated in a fixed‐bed adsorption system using a model fuel containing aniline, indole, quinoline, carbazole, and ethyl‐carbazole. The results indicate that OCFG, especially the strong carboxyls, weak carboxyls and anhydrides, play a crucial role in determining the adsorptive performance of activated carbon for selective removal of nitrogen compounds from liquid hydrocarbons. The adsorption mechanism of the nitrogen compounds over activated carbon was discussed on the basis of the structure‐performance correlation and the molecular simulation. © 2012 American Institute of Chemical Engineers AIChE J, 59: 1236–1244, 2013     

建筑用绝热金属面夹芯板抗弯承载力的试验研究

金属面夹芯板是很常用的建筑保温隔热材料。目前,最新夹芯板国家规范仅包括岩棉和聚氨酯的承载力设计公式,对其他面夹芯板没有涉及。通过对48个不锈钢、铝板、秸秆面夹芯板抗弯试验和27个材料性能试验,得到各种芯材的基本材料性能以及不同夹芯板的抗弯承载力,为统一抗弯承载力公式的推导打下基础。