一种新的探井效果评价指标——以济阳坳陷为例

探井效果评价是勘探管理与决策分析中的一项基本内容，但目前常用的探井效果评价指标并不能真正反映当年探井的实际效果。根据济阳坳陷多年的勘探实际，综合考虑探井与储量之间历史关系的复杂性、勘探产出形式的多样性，提出了一种新的评价当年探井效果的指标——当年单井效果综合评价指标。其具体确定过程可分为3个步骤：①不同形式的勘探产出向探明储量的折算；②当年探井对预期探明储量的贡献分析；③当年平均单井效果计算。从实际应用对比来看，该指标能最大限度地反映出当年探井对储量的实际贡献，可对当年探井勘探效果作出更客观的宏观评价。     

Light induced degradation of testosterone in waters

The degradation of testosterone under simulated irradiations was studied in phosphate buffers and in natural waters at various excitation wavelengths. The quantum yield of photolysis was significantly lower at 313 nm (2.4 × 10^− 3) than at 254 nm (0.225). The formation of several photoproducts was observed, some of them being rapidly transformed in turn while others show higher stability towards subsequent irradiations. The nature of the main products was tentatively identified, both deduced from their spectral and spectrometric data and by comparison with synthesised standard compounds. Among the obtained photoproducts, the main one is possibly a spiro-compound, hydroxylated derivative of testosterone originating from the photohydratation of the enone group. The photodegradation pathway includes also photorearrangements. One of them leads to (1,5,10)-cyclopropyl-17β-hydroxyandrostane-2-one. The pH of the water does not seem to affect the rate of phototransformation and the nature of the by-products.     

SEASONAL REVERSE OF SEA SURFACE SLOPE IN THE NORTHERN YELLOW SEA AND ITS DYNAMIC RELATION WITH MONSOON EFFECTS

Based on the monthly average sea level data from the tide gauge measurement (1999-2001), the seasonal variability of the sea level in the Northern and Middle Yellow Sea is studied to reveal that the sea surface height at all the tide gauges becomes higher in summer than that in winter. In addition, the sea surface height of the Northern Yellow Sea is higher than the one of the Middle Yellow Sea with a slope downward from the north to the south in summer, while it is lower with a reversed slope in winter. The seasonal reverse of the sea surface slope can be attributed to the monsoon effects i.e. the annual reverse of the monsoon direction and the annual variation of the monsoon rainfall. A set of equations are established in light of the dynamic principles to expound how the monsoon forcing and the sea surface slope generate a summer outflow and a winter inflow in the Yellow Sea.     

NEW WIND WAVE GROWTH RELATIONS

In the present paper combining the relationship between wave steepness and wave age with the significant wave energy balance equation for wind wave, a new wind wave growth relation is presented. Comparisons with the other existing wind wave growth relations show that the results in present paper accord better with the wind wave growth process.     

共偏移距道集波动方程叠前深度偏移的Green函数法

在基于波动方程的偏移速度分析中，共偏移距道集数据的波动方程叠前深度偏移是十分重要的，因为它能提供地质上可解释的偏移图像（如不同偏移距的共成像点道集）。本文根据共偏多距道集数据的具体物理特性，采用Green函数法实现共偏移距道集数据的波动方程叠前深度偏移。在Green函数算子的具体构造中使用了稳定的Rytov近似计算慢度横向扰动引起的散射波场。用Marmousi模型数据进行了试验，结果表明共偏移距道集波动方程叠前深度偏移Green函数法的偏移结果不仅与常规的利用双平方根算子的共偏移距道集波动方程叠前深度偏移方法的结果相当，而且还能为偏移速度分析提供了不同偏移距的共成像点道集，对野外各种观测系统的适应性也很强。但本文的Green函数法的计算量较常规共偏移距波动方程叠前深度偏移法有明显增加。     

极化电位下高强钢腐蚀疲劳裂纹扩展的表征

研究了不同极化电位下高强钢在3.5%NaCl溶液中疲劳裂纹扩展速率的变化规律.在强阴极极化(-1100 mV～-1200 mV)和阳极极化(-200 mV～-400 mV)条件下,高强钢腐蚀疲劳裂纹扩展寿命明显缩短,而极化电位为-800 mV～-1000 mV时,高强钢腐蚀疲劳寿命延长.在Paris经验公式的基础上,引...     

Q235钢在察尔汗盐湖卤水中的电化学行为

采用电化学方法研究了Q235钢在盐湖卤水中电化学行为随浸泡时间的变化规律.结果表明,在浸泡前期腐蚀较快,随着浸泡的进行,钢表面覆盖微薄的腐蚀产物层,在高盐度的卤水环境中,腐蚀产物层可有效增加氧扩散的阻力,减缓腐蚀的进行.     

F-Si封闭剂对热喷涂15%Al-85%Zn合金涂层电化学行为的影响(英文)

大部分船体外壳通过喷漆、牺牲阳极和外加电流阴极保护方法来解决抗腐蚀问题。但是,这些传统的方法不是非常有效,因为船尾的船舵常暴露在严重的腐蚀环境中,例如潮汐、船行驶速度、气蚀和冲刷腐蚀。由于气泡的生成与破裂而产生的振荡波而导致的气蚀和冲刷腐蚀会对材料产生破坏。对热喷涂Al-Zn合金涂层进行了气蚀和电化学性能测试实验。然后,Al-Zn合金涂层表面涂刷F-Si封闭剂以提高Al-Zn涂层的耐海水电化学腐蚀和抗气蚀性能。结果表明,该封闭剂不但适用静态环境,而且适用于动态环境。     

硫酸盐还原菌模拟生物膜对907A钢腐蚀的影响

根据生物膜的结构特征,以硫酸盐还原菌和琼脂的混合物沉积于907A钢表面,形成人工模拟生物膜,采用微电极研究了模拟生物膜下溶解氧的分布情况,采用环境扫描电镜和能谱表征了模拟生物膜下907A钢在不同环境中的腐蚀情况。研究结果表明在人工模拟生物膜内,距离金属材料表面越近,溶氧量越低;金属材料的腐蚀情况受环境影响,当环境中富含还原性物质且SRB生长旺盛时,907A钢腐蚀严重,腐蚀产物以硫化铁为主,当环境中缺乏还原性物质且SRB生长不良时,907A钢的腐蚀产物以铁氧化物为主。     

Controlled,Parametric, Individualized, 2D,and 3D Imaging Measurements of Aerosol Deposition in the Respiratory Tract of Healthy Human Subjects: Preliminary Comparisons with Simulations

Preliminary comparisons of simulation results from existing extrathoracic (ET) models and a lung deposition model with individualized, two-dimensional and three-dimensional (3D) imaging measurements of aerosol deposition in the respiratory tract of healthy human subjects have been presented. In general, the ET models did not correspond well with each individual's experimental data. However, there is rather good agreement between simulated and experimental results for regional lung deposition comparable to those previously found in the literature. Comparisons of generational distributions are relatively poor. These preliminary results suggest not only the need for further developments in deposition modeling, but also the need for better methods for analyzing experimentally determined 3D deposition distributions for comparison to simulated results.

Copyright 2013 American Association for Aerosol Research