福建福清龙高半岛断裂活动性研究

根据对龙高半岛主要断裂与上覆地层的切割关系考察、浅层地震勘探、断裂两侧等时地貌面的分布调查等资料,分析了断裂第四纪以来的活动特征,并探讨了地震活动与断裂活动的关系.研究结果表明: 中楼-东瀚断裂(F1)、高山断裂(F2)和海口-江阴断裂(F4)属有地质、地貌证据的中更新世活动断裂; 三山断裂(F3)属浅层地震勘探确定的早中更新世活动断裂; 福清断裂(F5)和东张断裂(F6)属断层物质TL测年结果确定的早中更新世活动断裂.从区内≥3级中小地震沿龙田-江镜地堑边界的分布特点看,可能与三山断裂和海口-江阴断裂活动有关.     

互联网技术条件下的GIS应用分析

随着互联网技术、移动通讯技术高速发展,GIS面临着极好的发展机遇。GIS、GPS、Internet和WAP,以及第三代移动通讯(3G)技术的整合将大大拓展传统GIS的应用空间,使GIS技术服务于个人和一般企业成为可能,本文重点探讨基于WAP条件下的GIS应用技术.     

论伪距测量的多普勒效应

论述了多普勒效应对 GPS伪距测量的影响 ,建立了 GPS伪距测量多普勒改正的模型。研究表明 ,多普勒效应对伪距观测值的影响与伪距和伪距变化率的积成正比。伪距观测值的多普勒改正的符号与伪距变化率的符号相同。多普勒改正值在卫星升起和降落时最大 ,其最大值可达到 60 m左右 ;在卫星最高位置时最小 ,其值接近于 0。多普勒效应对伪距观测值的影响相对于卫星最高位呈负对称     

循环流化床燃煤脱硫剂技术研究现状及开发前景

本文论述了循环流化床在煤燃烧领域中的优势地位,并着重阐述了国内外循环流化床脱硫技术研究与脱硫剂开发利用状况,指出了在脱硫剂应用方面与国外的差距,提出了脱硫剂生产的产业化发展方向。     

热采条件下储集岩的软化及其防治

许多储集岩经蒸汽和热水处理后,可产生明显的软化作用。这种软化作用主要是由于白云石、高岭石和石英的部分破坏和生成蒙脱石。在这种情况下,软化作用是相当大的,直至足以引起储集岩中支撑裂隙的显著愈合,因而,能导致钻井产能的显著减少。已经发现把一些物质（ＲＡ） 添加到热液中,不仅能够防止岩石软化,而且能使岩石硬化。这一效果来源于岩石中原始粘土矿物的改变和新生矿物相的重结晶和重新取向     

Cs and Cl NMR spectroscopy and molecular dynamics modeling of Cs and Cl complexation with natural organic matter

Interaction of dissolved aqueous species with natural organic matter (NOM) is thought to be important in sequestering some species and enhancing the transport of others, but little is known about these interactions on a molecular scale. This paper describes a combined experimental ¹³³Cs and ³⁵Cl nuclear magnetic resonance (NMR) and computational molecular dynamics (MD) modeling study of the interaction of Cs⁺ and Cl⁻ with Suwannee River NOM. The results provide a detailed picture of the molecular-scale structure and dynamics of these interactions. Individual NOM molecules are typically hundreds to thousands of Daltons in weight, and on the molecular scale their interaction with small dissolved species can be investigated in ways similar to those used to study the interaction of dissolved aqueous species with mineral surfaces. As for such surface interactions, understanding both the structural environments and the dynamics over a wide range of frequencies is essential. The NMR results show that Cs⁺ is associated with NOM at pH values from 3.4 ± 0.5 (unbuffered Suwannee River NOM solution) to 9.0 ± 0.5. The extent of interaction increases with decreasing CsCl concentration at constant pH. It also decreases with increasing pH at constant CsCl concentration due to pH-dependent negative structural charge development on the NOM caused by progressive deprotonation of carboxylic and phenolic groups. The presence of NOM has little effect on the ¹³³Cs chemical shifts, demonstrating that its local coordination environment does not change significantly due to interaction with the NOM. Narrow, solution-like line widths indicate rapid exchange of Cs⁺ between the NOM and bulk solution at frequencies of >10² Hz. The MD simulations support these results and show that Cs⁺ is associated with the NOM principally as outer sphere complexes and that this interaction does not reduce the Cs⁺ diffusion coefficient sufficiently to cause NMR line broadening. The ³⁵Cl NMR data and the MD results are consistent in demonstrating that there is no significant complexation between Cl⁻ and NOM in the pH range investigated, consistent with negative structural charge on the NOM.     

利用催化动力学原理测定化探样中微量碘的含量

在HAc-NaAc形成的中性缓冲溶液体系中,利用碘的催化动力学原理,使N-N-四甲基-4-4-二氨基二苯甲烷与氯胺T的氧化反应,生成蓝色络合物来测定地探样中微量碘的含量。通过实验,最佳试剂加入量为8%的HAc溶液5mL,8%的Na2CO3溶液3mL,0.1%的N-N-四甲基-4-4-二氨基二苯甲烷溶液5mL所组成的溶液体系中,在加入0.1%的氯胺T1mL显色后,其测定结果准确度、精密度高,检出限低,测定化探样中微量碘时该方法可以推广应用。     

用自组织人工神经网络分类,识别矿物

作者运用三维Ｔ．Ｋｏｈｏｎｅｎ自组织人工神经网络对我国沉积碳酸盐型锰矿中菱锰矿进行分类、识别。所选研究实例中，识别成功率达１００％．结果表明，该网络性能良好，可望成为矿物识别的有效手段。     

Magnetic susceptibility of ultrahigh pressure eclogite: The role of retrogression

Retrograde metamorphism played the dominant role in changing the low-field rock magnetic properties and density of 198 specimens of variably retrograded eclogites from the main borehole of the Chinese Continental Scientific Drilling Project (CCSD) and from surface outcrops in the Donghai area in the southern part of the Sulu UHP belt, China. Bulk magnetic susceptibility (κ) of unretrogressed UHP eclogite is controlled by whole-rock chemical composition and ranges from 397 to 2312 μSI with principal magnetic susceptibility carrying minerals paramagnetic garnet, omphacite, rutile and phengite. Partially retrograded eclogites show large variations in magnetic susceptibility between 804 and 24,277 μSI, with high mean magnetic susceptibility values of 4372 ± 4149 μSI caused by appreciable amounts of Fe-Ti oxide minerals such as magnetite, ilmenite and/or titanohematite produced by retrograde metamorphic reactions. Completely retrograded eclogites have lower susceptibilities of 1094 ± 600 μSI and amphibolite facies mineral assemblages lacking high magnetic susceptibility minerals. Jelínek's corrected anisotropy (P_j) of eclogites ranges from 1.001 to 1.540, and shows a positive correlation with low-field magnetic susceptibility (κ). Arithmetic mean bulk density (ρ) shows a steady decrease from 3.54 ± 0.11 g/cm³ (fresh eclogite) to 2.98 ± 0.06 g/cm³ (completely retrograded eclogite). Retrograde metamorphic changes in mineral composition during exhumation appear to be the major factor causing variations in low field magnetic susceptibility and anisotropy. Retrograde processes must be taken into account when interpreting magnetic surveys and geophysical well logs in UHP metamorphic terranes, and petrophysical properties such as density and low-field magnetic susceptibility could provide a means for semi-quantifying the degree of retrogression of eclogite during exhumation.     

Calcified roasting-acid leaching process of vanadium from low-grade vanadium-containing stone coal

The low-grade vanadium-containing stone coal used in this experiment was collected from Wuxi Coun- try, Chongqing City, China. The experiment focused on the vanadium recovery from roasted residue through opti- mizing the process conditions of an effective and environmentally-friendly technology, named calcified roast- ing-sulfuric acid leaching technology. By single-factor experiments and orthogonal experiments, the effects of roast- ing temperature, roasting time, sulfuric acid concentration and leaching time on the leaching ratio of vanadium were analyzed. The results showed that the leaching ratio of vanadium reached 85.5% under the proper technological con- ditions of roasting temperature=950℃, roasting time=4 h, 40% concentration of sulfuric acid and leaching time=6 h.