一种利用断层岩泥质含量判断断层侧向封闭性的方法及其应用

为了更简便地判断断层侧向封闭性,在断层侧向封闭机理及其影响因素研究的基础上,通过断层岩 排替压力与所封闭储层排替压力对比,预测了断层侧向封闭所需断层岩泥质含量的下限值,以此建立了 一套利用断层岩泥质含量判断断层侧向封闭性的方法,并将其应用于南堡凹陷 5 号构造 f-np5-2 断层 对东三段下部 1～7 号储层侧向封闭性的判断中。 结果表明：f-np5-2 断层在东三段下部 1～3 与 6 号 储层处断层岩泥质含量均大于其侧向封闭所需断层岩泥质含量的下限值,断层侧向上封闭,有利于油气 聚集,钻探结果为油层;f-np5-2 断层在东三段下部 4～5 与 7 号储层处断层岩泥质含量均小于其侧向 封闭所需断层岩泥质含量的下限值,断层侧向上不封闭,不利于油气聚集,钻探结果为干层。 利用断层 岩泥质含量判断断层侧向封闭性的结果与目前 NP503 井东三段下部油气分布相吻合,表明该方法用于 判断断层侧向封闭性是可行的。     

基于XML的Web查询功能的实现

Web信息查询是Web应用领域中的一个重要研究课题．介绍了XML数据模型，并从建立XML数据源、Web查询过程及查询实例3个方面，讨论了XML在Web查询中的应用．     

车载局域互连网络在线诊断系统

车载局域互连网络(LIN)是适用于车内模块通信的低成本、短距离、低速网络。随着LIN的推广和普及,故障诊断、报文采集等工作已成为LIN应用中急待解决的问题。基于LIN通信协议,提出一种有效的LIN在线诊断方案,通过对传统的SCI模块与SLIC模块的研究,提出基于MC68HC908QL4单片机的报文采集节点系统。实践结果证明该系统是LIN研制、开发的有力工具。     

基于植物多样性保护的中国植物园时空分布特征

【目的】植物园是园林专用绿地的一种类型,其植物多样性对维持城市生态平衡意义重大。【方法】采用数理统计与GIS空间分析方法,对已加入中国植物园联盟的229个植物园的时空分布特征及植物多样性保护特征展开研究,为植物园体系的构建提供基础支撑。【结果】1）中国植物物种保护率为41.2%,存在南低北高的地区差异性;2）中国植物园数量稳步增加,空间分布特征表现为数量上西疏东密,面积规模上西阔东微;3）中国植物园已收集保存植物2.3万余种,初步形成了迁地保护格局,是城镇开发边界内植物多样性保护的主阵地。【结论】中国植物园空间布局与植物多样性保护需求之间存在不平衡,应从国家层面统筹规划植物园建设,在青藏高原、新疆等西部生物多样性热点地区增加植物园数量,健全植物就地和迁地协同保护体系,强化科学研究,以完善国家种质资源库信息,推进植物园体系建设。     

Solid phase extraction and removal of brilliant green dye on zinc oxide nanoparticles loaded on activated carbon: New kinetic model and thermodynamic evaluation

The brilliant green (BG) solid phase extraction of carried out following accumulation on including zinc oxide nanoparticles loaded on activated carbon (ZNO-NP-AC) non-toxic and green as material. The influence of variables such as pH, initial BG concentration, contact time, amount of adsorbent, eluent and temperature on BG removal and recoveries were studied and optimized. The high correlation coefficient and possibility of accurate prediction and explanation of experimental data by novel kinetic model show its applicability and superiority for representation of experimental data. The results of present model compared with traditional kinetic models (pseudo-first and second order and intraparticle diffusion model). Additionally, fitting the experimental equilibrium data to numerous conventional isotherm models show that the Langmuir model with high correlation coefficient and low error analysis is more usable to explain the experimental data. The calculated change in entropy and enthalpy of BG adsorption on proposed adsorbent was 136.59 J mol⁻¹ K⁻¹ for 15.0 mg L⁻¹ and 65.2 J mol⁻¹ K⁻¹ 35.2 kJ/mol and 16.1 kJ/mol for 15 mg L⁻¹. The quantitative elution of retained BG by 2.0 mL of EtOH make permit accurate and repeatable monitoring off BG over wide linear range (0.2–500 ng mL⁻¹) with limits of detection (LODs) of 0.08 ng mL⁻¹. The preconcentration factors were 75 and loading half time (t_1/2) values were less than 5 min.     

用XML对数据库查询的方法

本文讨论了用ＸＭＬ查询数据库的具体实现方法。首先,提出了用ＤＴＤ描述关系数据模式和利用ＡＳＰ技术转化数据库的数据成ＸＭＬ文档方法;然后,用ＸＭＬ的查询语言ＸＭＬ－ＱＬ完成Ｗｅｂ数据库上查询和数据集成等操作。     

Pullout behavior of geosynthetic reinforcement in biocemented soils

The pullout resistance of a geosynthetic reinforcement is crucial for the design of reinforced soil structures. In this paper, an innovative concept, biocementation-geosynthetic (BG) system is presented, in which biocementation is used in combination with geosynthetic to increase the pullout resistance of the geosynthetic reinforcement. A series of pullout tests were conducted in laboratory to obtain the pullout behavior of the biocementation-geosynthetic system. From the pullout test results, it was found that the BG system was more efficient in enhancing the pullout resistant as compared with the ordinary geosynthetic (OG) system. For both geosynthetic strips and biaxial geogrid, the BG system had a higher pullout resistance at various levels of relative density. The BG system with only about 0.65% calcite produced by the biocementation process has a 13%–38% improvement in the pullout resistance compared to the OG system. In addition, the interface shear strength parameters (the adhesion c_a and average interface friction angle ?) of the BG system are also higher than that of the corresponding OG system in most cases, indicating the better interface performance of the BG system.     

Decoloration of aqueous Brilliant Green by using glow discharge electrolysis

This paper described a plasma degradation of Brilliant Green (BG) by glow discharge electrolysis. Various influencing factors such as the voltage, the distance between cathode and anode were examined. Ultraviolet (UV) absorption spectra, gas chromatogram-mass spectrum (GC-MS), and chemical oxygen demand (COD) were used to monitor the degradation process and to identify the major oxidation intermediates. It was confirmed that benzoic acid, 1,2,3,4,5,6-cyclohexanehexaol, and carboxylic acids (e.g., oxalic acid, succinic acid and hydroxyacetic acid) were produced in the degradation process. The results showed that BG rapidly underwent degradation and eventually mineralized into CO(2) and H(2)O.     

焊丝对Q890钢焊接接头显微组织和硬度的影响

分别选用OK13.31、GHS90和MK-GHS90焊丝,在线能量为12 kJ/cm的条件下对Q890钢进行焊接试验。对3种焊接接头的组织和硬度进行了分析。结果表明,OK13.31焊丝的焊接接头硬度相对较低,与基材硬度差小,热影响区软化区宽度较小,焊接粗晶区具有相对多的贝氏体,该焊接接头具有较好的力学性能。     

A novel structural modeling and analysis of VLSI interconnect with an RLC tree network system using a BG/SEBD approach

A practical and effective novel graphical structural modeling and analysis approach is presented.This approach is used for solving the state interactions modeling problem caused by the model approximations in VLSI interconnect for RLC tree network systems.The bond graph (BG) energy model with a simulink energy-based block diagram (SEBD) algorithm is developed.The dynamic behaviors of an example of VLSI interconnect with a 20th-order RLC tree are presented.Methods of sequent structuring and the delineation o...