调质线微机恒温控制系统的研究

分析了Ｕ型钢调质线生产工艺中手动调节的缺点,采用了ＰＩＤ调节的新方法,完成了硬件设计和软件系统,并进行了现场应用。     

纤维网片复合方式对纤维增强水泥基材料性能的影响

在分析渍浆纤维混凝土(SIFCON)和渍浆网片混凝土(SIMCON)各自优缺点的基础上，研究了不同性质乱向短纤维和定向纤维网片复合及不同性质网片组合方式对纤维增强混凝土性能的影响．实验结果表明：各种纤维体积分数下定向网片与乱向短纤维复合增强混凝土各项性能明显优于单用乱向短钢纤维增强混凝土；当纤维总体积分数为8％时，由2层细孔编织钢丝网和3层细孔玻纤网组合网片型式B(网片体积分数为0．7％)与乱向短纤维(体积分数为7．3％)复合增强混凝土，其抗弯强度、抗剪强度、弯曲韧性(I5)比短切钢纤维增强混凝土(SIFCON)分别提高了45％，25％和46％，从而揭示了高弹模与低弹模纤维复合、乱向纤维与定向纤维网复合，优化纤维分布和取向，使其在材料层次和结构层次协同作用的优势得以发挥，并以较低的成本和较方便的施工工艺制备了高性能纤维增强水泥基复合材料。     

Experimental investigation on upstream-injection interaction with a scramjet cavity flameholder

The study has evaluated the coherent structures and the velocity field of gaseous transverse jet upstream of a scramjet flameholder in a supersonic turbulent flow. The high spatiotemporal resolution coherent structures of the jet plume/wakes and the cavity shear layer were obtained by utilizing the nanoparticle-based planar laser scattering technique. Compared to the no upstream injection case, the cavity shear layer downstream of the jet shows significant mass exchange with mainstream. The particle image veloc- imetry velocity field and the velocity profiles demonstrated that the interaction intensity of the cavity shear layer with the upstream injection is further enhanced as the injection stagnation pressure increases.     

安徽黄精和琅琊黄精核型初步研究

本文对黄精属（Ｐｏｌｙｇｏｎａｔｕｍ Ｍｉｌｌ．）中安徽特有２种植物的核型进行了初步研究，并分别人近缘种的核型进行了比较。结果表明：安徽黄精（Ｐ．ａｎｈｕｉｅｎｓｅ）核型公式为２ｎ＝２４＝４ｍ＋６ｓｍ＋１２ｓｔ＝２Ｔ，属３Ｂ核型，染色体相对长度组成为２ｎ＝２４＝６Ｌ＋６Ｍ２＋６Ｍ１＋６Ｓ．琅琊黄精（Ｐ．ｌａｎｇｙａｅｎｓｅ）核型公式为２ｎ＝１８＝１０ｍ＋２ｓｍ＋６ｓｔ，属２Ｂ核型；染色体相对长度组     

从生态学角度思考山地城市绿地系统

从生态学的观点出发,分析了山地城市绿地系统的生态学特征,认为城市的结构实质上是多种生态斑的互相嵌合,并用斑块的内部/边缘指数表示绿地的生态效益的大小或类型.指出山地城市绿地系统独特的形态构成特征无论是对丰富城市景观,还是创造良好的城市生态环境,促进城市生态系统的稳定及良性循环,为广大城市居民提供一个舒适宜人的生活、居住、工作环境,都具有不可忽视的生态学意义.提出了关于山地城市绿地系统的几点思考及解决措施.     

Biomineralization process occurring in iron mud of coastal seepage area of Zhoushan Island, Zhejiang province

The biomineralization process of iron oxidizing bacteria and its influence on accumulation of metals were investigated by modern biological observation techniques （i.e., SEM and TEM） and geochemical methods, in coastal area of Zhoushan Island, Zhejiang province where a thick ancient wood layers were buried, Results show that the iron mud samples mainly contain Leptothrix-like sheaths and Gallionella-like stalks, which are known as neutrophilic iron-oxidizing bacteria. These two bacteria are present as obviously different abundance in two sampling sites, which may be regulated by the geochemistry of seepage water. The biomineralization product of iron oxidizing bacteria is ferrihydrite, a poorly ordered iron oxide, and formation of amorphous mineral is affected by the factors of bacteria, minor Si and temperature preventing any further transformation into more crystalline phases. Organic functional groups, extracellular polymers and surface charges can provide favorable nucleation sites or template for formation of iron precipitates on the bacterial surface. The mineralization process of the iron oxidizing bacteria is divided into different stages, i.e., extracellular mineralization, intracellular mineralization and the whole cell mineralization. Furthermore, due to BIOS containing the bacterial organic matter, the accumulation capacity of metals specially Fe and Co is highly increased, suggesting that BIOS exert a degree of controlling in the cycling of metal elements in seepage area.     

消除彩色PDP运动图像动态假轮廓的延伸编码及优化

为了解决常规的线性延伸编码在消除动态假轮廓时需要子场数目多的不足，从动态假轮廓的成因入手，在常规的线性延伸编码尾部添加微调码，对其进行了改进和优化；为了维持原有的子场数目，引入了误差扩散技术。仿真结果表明，改进后的线性延伸编码能够有效地消除动态假轮廓，运动图像和静止图像的相关系数为0．8972，使图像显示质量大为改善。     

复杂地区可控震源高效采集技术*

中国西部地区地表多以戈壁沙漠为主,非常适合可控震源施工,随着油气勘探和开发的不断深入,高密度、宽方位或全方位三维地震勘探技术被大量应用,随之带来巨大的成本压力。阐述了可控震源从传统的多台多次组合激发,逐步发展形成的拆分振次技术、交替扫描技术、滑动扫描技术、拆分台次技术、谐波压制技术。这些技术突破了可控震源传统的扫描方法,通过相互结合,联合应用,生产效率大大提高,单炮激发成本大幅降低,很好地解决了高密度地震勘探的成本问题,有效推动了西部复杂探区高密度、高覆盖、全方位三维地震勘探技术的推广应用。2005年以来,在对可控震源激发参数进行大量研究和试验基础上,逐步形成了可控震源经济、高效的激发技术和参数优化方法。在TH盆地致密砂岩油气藏勘探中,不仅中浅层信噪比明显提高,同相轴连续性明显增强,同时深层以及煤下和层间弱反射层的信噪比也有较大提高,进一步推动了西部盆地致密砂岩油气藏的勘探进程。     

Role of the prolyl isomerase Pin1 in protecting against age-dependent neurodegeneration

The neuropathological hallmarks of Alzheimer's disease and other tauopathies include senile plaques and/or neurofibrillary tangles. Although mouse models have been created by overexpressing specific proteins including beta-amyloid precursor protein, presenilin and tau, no model has been generated by gene knockout. Phosphorylation of tau and other proteins on serine or threonine residues preceding proline seems to precede tangle formation and neurodegeneration in Alzheimer's disease. Notably, these phospho(Ser/Thr)-Pro motifs exist in two distinct conformations, whose conversion in some proteins is catalysed by the Pin1 prolyl isomerase. Pin1 activity can directly restore the conformation and function of phosphorylated tau or it can do so indirectly by promoting its dephosphorylation, which suggests that Pin1 is involved in neurodegeneration; however, genetic evidence is lacking. Here we show that Pin1 expression is inversely correlated with predicted neuronal vulnerability and actual neurofibrillary degeneration in Alzheimer's disease. Pin1 knockout in mice causes progressive age-dependent neuropathy characterized by motor and behavioural deficits, tau hyperphosphorylation, tau filament formation and neuronal degeneration. Thus, Pin1 is pivotal in protecting against age-dependent neurodegeneration, providing insight into the pathogenesis and treatment of Alzheimer's disease and other tauopathies.     

祖国统一大业与中华民族凝聚力

：中国传统文化历来注重国家统一,统一是中国历史发展的主流。实现祖国统一必须增强中华民族的凝聚力。中华民族具有极强的凝聚力,两岸统一是民心所向、大势所趋。台湾回归祖国,不仅对两岸经济社会发展有诸多好处,而且反过来会在很大程度上增强中华民族凝聚力。为了实现祖国统一,应特别注意做好四方面的工作：一、推进中国特色社会主义建设,提升综合国力;二、深化政治体制改革,加强民主化、法制化建设;三、坚持和完善“一国两制”方针,确保香港、澳门的稳定与繁荣;四、加强两岸经济文化交流,与“台独”势力进行坚决斗争。