海上油田河流相复合砂体构型级次解析*

在现有的碎屑沉积地质体构型分级方案基础上,充分考虑自然界中河流沉积演化规律以及海上油田的资料基础与经济开发尺度等因素,遵循地质体分级原则与依据,建立了海上油田河流相复合砂体构型分级方案。从地质成因、主控因素、时空规模等方面系统阐述了河流相复合砂体13级构型单元的基本特征,并解析其与相关沉积地质体级次的关联性。与现有的储层构型分级的差异主要在于新增了“复合点坝”级次,复合点坝是多期残存点坝以复合体形式叠置而成的沉积单元,该级次是储层构型理论、海上油田资料分辨能力与经济开发尺度三者的契合点,是海上油田“地震导向、井震联合”构型研究思路的良好实践。河流相复合砂体构型分级对于指导海上油气开发具有一定的优势。     

龙湾铁矿构造控矿研究

从地体构造观点出发,应用构造解晰方法,对遵化地体仙杨峪隆起区西部边缘弧形内的龙湾铁矿进行报构造控矿规律研究。认为在隆起区边缘带是一种静态＋动态的构造环境,矿体受褶皱与韧脆怀剪切带复合控制,矿体呈剪切断片、褶皱片群形式存在。     

RAPD标记鉴别红鳍东方鲀和假睛东方鲀种群的初步研究

用ＲＡＰＤ技术对东方纯属（Ｆｕｇｕ）的红鳍东方鲀（Ｆｕｇｕ　ｒｕｂｒｉｐｅｓ）和假睛东方鲀（Ｆｕｇｕｐｓｅｕｄｏｍｍｕｓ）共三个群体进行分析,经２０个随机引物扩增,得到每一个体的多态片段。比较所有图谱,没有发现能够鉴别三个群体的特异性谱带;而且采自日本的红鳍东方纯与采自中国的红鳍东方鲀的电泳图谱基本相似。结果还表明,红鳍东方纯与假睛东方鲀电泳图谱的差异也甚小,说明二者的亲缘关系非常接近,这与以前用同工酶进行分析的结果相一致（王可玲等,１９８４）,     

2-取代-5-氟脲嘧啶的_β-D -木糖苷的合成(英文)

通过相转移催化法或ｋｏｅｎｉｇｓｋｎｏｒｒ’ｓ 反应合成了１１ 种未见文献报道的２取代５氟尿嘧啶的βＤ木糖苷,结构经ＩＲ、ＨＮＭＲ、ＭＳ或元素分析证实,初步生物实验表明具有一定程度的抗癌性。     

Discovery of Cu-Ni-Zn-Sn-Fe intermetallic compounds and S-bearing alloys in the Zhaishang gold deposit, southern Gansu Province and its geological significance

Examination of ores by optical microscope and EPMA from the Zhaishang gold deposit, southern Gansu Province, has revealed an abundance of rare minerals. These include native metals, Cu-Ni-Zn-Sn-Fe polymetallic compounds and S-bearing alloys of Ni, Fe, Zn, Cu and Sn, occurring as native nickel, Zn-Cu alloy, Ni-Zn-Cu alloy, Sn-Zn-Ni-Cu alloy, Zn-Cu-Ni alloy, Zn-Fe-Cu-Sn-Ni alloy, Fe-Ni-S alloy, Sn-Fe-Ni-S alloy, Fe-Zn-Cu-Ni-S alloy, Zn-Ni-Cu-Fe-S alloy and others. Compared with the Zn-Cu alloy minerals discovered previously, these Zn-Cu minerals fall in the α or α β portion in Zn-Cu alloy phase diagram, and the α portion has higher Cu content. Cu-Ni-Zn-Sn-Fe intermetallic compounds and S-bearing alloy minerals have not been previously reported in the literature. These rare alloys formed in a strongly reducing environment with absent oxygen and low sulfur activities.     

Biological,physical and chemical properties at the Subtropical Shelf Front Zone in the SW Atlantic Continental Shelf

The physical aspects of the Subtropical Shelf Front (STSF) for the Southwest Atlantic Continental Shelf were previously described. However, only scarce data on the biology of the front is available in the literature. The main goal of this paper is to describe the physical, chemical and biological properties of the STSF found in winter 2003 and summer 2004. A cross-section was established at the historically determined location of the STSF. Nine stations were sampled in winter and seven in summer. Each section included a series of conductivity-temperature-depth (CTD) stations where water samples from selected depths were filtered for nutrient determination. Surface samples were taken for chlorophyll a (Chl-a) determination and plankton net tows carried out above and below the pycnocline. Results revealed that winter was marked by an inner-shelf salinity front and that the STSF was located on the mid-shelf. The low salinity waters in the inner-shelf indicated a strong influence of freshwater, with high silicate (72 μM), suspended matter (45 mg l⁻¹), phosphate (2.70 μM) and low nitrate (1.0 μM) levels. Total dissolved nitrogen was relatively high (22.98 μM), probably due to the elevated levels of organic compound contribution close to the continental margin. Surface Chl-a concentration decreased from coastal well-mixed waters, where values up to 8.0 mg m⁻³ were registered, to offshore waters. Towards the open ocean, high subsurface nutrients values were observed, probably associated to South Atlantic Central Waters (SACW). Zooplankton and ichthyoplankton abundance followed the same trend; three different groups associated to the inner-, mid- and outer-shelf region were identified. During summer, diluted waters extended over the shelf to join the STSF in the upper layer; the concentration of inorganic nutrients decreased in shallow waters; however, high values were observed between 40 and 60 m and in deep offshore waters. Surface Chl-a ranged 0.07–1.5 mg m⁻³; winter levels were higher. Three groups of zoo and ichthyoplankton, separated by the STSF, were also identified. Results of the study performed suggest that the influence of freshwater was stronger during winter and that abundance distribution of Chl-a, copepods and ichthyoplankton was related to the Plata Plume Waters (PPW), rather than to the presence of the STSF. During summer, when the presence of freshwater decreases, plankton interactions seem to take place in the STSF.     

Fenton试剂氧化-微电解-接触氧化法处理丙烯腈废水实验研究

实验采用Fenton试剂氧化-微电解-接触氧化组合工艺处理丙烯腈废水。研究了各单元工艺的最佳控制参数和操作条件。结果表明,在废水pH值为3左右、反应时间2 h的前提下,双氧水投加量40 mL/L,二价铁离子质量浓度为0.4 g/L,再经过微电解处理后的出水进入接触氧化阶段。在溶解氧为4.5 mg/L左右,水力停留时间为10 h、容积负荷1.0 kg COD_Cr/（m³·d）左右的条件下,出水COD_Cr小于100 mg/L,可达到国家对丙烯腈废水处理要求的一级标准。     

毛乌素沙地砒砂岩与沙复配成土技术固沙效应

为研究砒砂岩与沙复配成土技术的固沙效应,本研究采用试验小区与大田试验相结合的方法,监测了土壤结皮厚度、土壤冻层深度、土壤水分、地表粗糙度和积雪消融等表征固沙效果的相关指标。结果表明:随着砒砂岩的引入,复配土中黏粉粒含量增加,土壤饱和导水率降低,而土壤含水量、结皮厚度、地表粗糙度和冻层深度都有所增加,复配土抗风蚀能力增强。在冬季,通过发展保护性耕作,农作物残茬、根系以及土地整治之后地形因素的改变等对防止土壤风蚀也起到了积极的作用。该研究可为砒砂岩与沙复配成土造田技术的固沙效应提供更充分的理论依据。     

疏水性交联聚合物微球与AP-P4的复合性能

考虑海上稠油油藏严重非均质性和海上平台寿命短、大井距开采的情况,也为解决疏水缔合聚合物在长时间高温、高盐度和高剪切条件下分子间疏水缔合比例降低问题,选择疏水性交联聚合物微球与疏水缔合聚合物进行复合.通过黏浓性质、抗剪切性能、填砂管封堵实验和人造岩心驱油实验,发现复合体系中微球能够与聚合物发生疏水缔合作用,改善聚合物在高温下的流变性能和抗剪切性能;且复合体系兼具交联聚合物微球的深部调剖和聚合物的增黏驱油性能,封堵性能和驱油效果均优于单纯聚合物驱.由于微球和AP-P4之间的疏水缔合作用使两者具有较好的复合效果,为改善聚合物驱提供新方法,为研究微观机理和指导聚合物驱奠定基础.     

高陡边坡组合式支挡结构大型振动台试验研究

为研究上部采用锚索框架结构、下部设置为桩板墙的组合式支挡结构的抗震性能,开展了大型振动台模型试验。通过输入不同强度大瑞波测试了组合结构的加速度响应和动土压力响应,同时将动土压力的实测值与规范法、Mononobe-Okabe法（M-O法）的计算值进行了对比研究。研究表明：（1）组合式支挡结构在不同强度地震动激励下水平向和竖直向加速度沿坡高有不同程度的放大,且输入的激振加速度幅值越大,放大效应越明显;（2）组合式支挡结构下部桩板墙墙后的动土压力强度随激振加速度幅值的增大而增大,沿着墙高呈现出上部小、下部大的分布特性;（3）动土压力强度的计算,在低烈度区使用规范法和M-O法是合理的,但在高烈度区需要对规范法和M-O法进行修正。