低电阻油层成因及其研究方法：以辽河油田为例

低电阻油层主要有两种储集层类型:一种是粉砂岩储集层;另一种是含粘土矿物的砂岩储集层.在这两种储集层中,由于强烈的毛细管作用和极大的内表面积形成的高含水饱和度使含烃储集层的电阻率与纯水层相似.在分析了辽河油田锦16块低电阻率油层的地质特点后,提出了识别低电阻油层的基本方法:从分析油藏的形成条件和储集层的岩性特征入手,利用测井信息结合岩心分析资料识别低电阻油层.     

Microstructure and electrical properties of high power laser thermal annealing on inkjet-printed Ag films

In this work, a high power continuous-wave (CW) Nd:YAG laser was used for thermal treatment of inkjet-printed Ag films - resulting in the elimination of organic additives (dispersant, binder, and organic solvent) in the Ag ink and annealing of Ag nano-particles. By optimizing laser parameters such as laser power and defocusing value, the laser energy can be totally converted into heat energy, which is used for thermal treatment of inkjet-printed Ag films. This results in the microstructure and the resistivity of the films to be controlled. We investigated the thermal diffusion mechanisms during laser annealing and the resulting microstructures. The impact of high power laser annealing on microstructures and electrical characteristics of inkjet-printed Ag films was compared to those of the films annealed by a conventional furnace annealing. Focused ion beam (FIB) channeling images show that the laser annealed Ag films have large columnar grains and a dense void-free structure, while furnace annealed films have much smaller grains and exhibit void formation. As a result, the laser annealed films have better electrical properties (low resistivity) compared to furnace annealed samples.     

Tectonics and architectonic quality in recently published Finnish log architecture: Corresponding architects’ perceptions

Due to the global increase in wood construction, it is crucial for architects to understand wood. In Finland, log building, a special subset of industrially manufactured massive timber construction materials is experiencing a renaissance. Cultural aspects combined with newer technical developments make log a complex material from the viewpoint of architectonic expression. To inform practicing architects, the aim of this study is to explore how the tectonics of logs contribute to the architectonic quality of log architecture. Semi-structured interviews among architects of twelve recently published log buildings are conducted. The results describe how architectonic quality is perceived among participants, and features of logs related to tectonics that they consider to be of importance in terms of architectonic quality. These features include the statics of log construction and log's nature as a simultaneously insulating, load-bearing and visual material. Differences between industrial and hand-hewn logs, as well as other architectural aspects of using logs in contemporary architecture are discussed. Especially the “non-settling” log was perceived to have manifold implications for the architectonic possibilities of log architecture. The results are of practical importance to designing architects and the log industry. Theoretical implications include tangible information on architectonic quality and tectonics of log building.     

混掺钢屑铁砂水泥砂浆压敏性研究

在砂浆中混掺钢屑和铁砂两种工业废弃料,制备得到环保低成本的水泥基复合材料,在测定其抗压强度的基础上采用交流两电极法研究其导电性能和压敏性能,并分析研究了混掺掺量、弹塑性荷载、不同加载速率以及冲击荷载等对其压敏性的影响。试验结果表明,随着导电材料掺量增加,试件压敏性更加明显。加载速率越大,试件电阻率变化越大;冲击荷载数值对瞬间电阻率与卸载后电阻率均有较大影响。     

Community response to environmental noise and the impact on cardiovascular risk score

Objective

The objective of our study was to investigate and evaluate the relationship between road traffic noise and cardiovascular risk.

Methods

The study sample (n = 659; 36.9% male, 63.1% female university students, mean age 22.83 ± 1.58 years) included a group exposed to road traffic noise (n = 280, L_eq,24 h = 67 ± 2 dB(A)) and a control group (n = 379, L_eq,24 h = 58.7 ± 6 dB(A)). Subjective response was determined by a validated noise annoyance questionnaire. The ten year risk of developing a coronary heart disease event was quantified as an evaluation of cardiovascular risk (SCORE60, Framingham 10-year risk estimation and projection to the age of 60, relative risk SCORE chart).

Results

Cardiovascular risk scores were significantly higher in the exposed group based on the Framingham scores projected to the age of 60, SCORE60 (AOR = 2.72 (95% CI = 1.21-6.15)) and the relative risk SCORE chart (AOR = 2.81 (1.46-5.41)).

Conclusions

These findings highlight the association between road traffic noise and cardiovascular risk.     

高密度电阻率法在查明滑坡覆盖层厚度中的应用

高密度电阻率法由于具有效率高、探测深和精确度高的特点,已成为在水文和工程地质勘察中最有效的物探方法之一。本文简要的介绍了高密度电阻率法的工作原理,并着重分析了此方法在某工区查明滑坡覆盖层厚度中的应用实例,其结果取得了好的效果。     

孤岛油田水淹层变化规律研究

孤岛油田经过40余年的开发,已经进入高含水生产阶段。研究结果表明水淹程度和注入水性质控制电阻率曲线特征变化和储层特征变化,岩石润湿性随着含水饱和度越高由亲油向亲水方向逐渐变化。随着油层含水饱和度的增加,流体特征发生一系列变化,与原始油层区别较大。     

小径原条剥皮方式对木材干燥的影响

本文对具有四种剥皮状态的次生林白桦小径木的干燥特性进行了比较研究，分析了干燥时间、干燥速度、干燥质量、干缩率和干燥过程中的分层含水率等。初步探讨了平行条状剥皮原条干燥的合理性，并指出干燥温度对原条干燥质量的影响较大。     

基于老井资料的碳酸盐岩储层测井解释研究

碳酸盐岩储层岩性复杂，老油气区测井系列不全，测井定量解释的难度很大。文章选取研究区有利构造部位测井项目齐全的井，以取心和测试层段为研究基础，通过深入分析典型储层岩性、物性及含油气性在电性上的响应特征，分类建立了中子、密度与其它测井曲线的关系数据样本，用BP神经网络方法建立中子和密度曲线的构建模型并预测其它老井的中子和密度曲线；用最优化测井解释方法，在准确识别岩性的基础上完成较高精度的测井资料数字处理；结合试气和投产资料，建立储层及有效厚度评价标准，进行储层测井综合解释。用该方法对老气田12口井三叠系嘉二段储层进行了精细测井处理和解释，取得了比较满意的效果。分析认为：在碳酸盐岩储层测井解释中，岩性识别是关键；BP神经网络在构建测井曲线中有其独到之处，该研究思路和方法对老井复查工作有一定的参考使用价值。