马丽散加固沿空掘巷煤柱在许厂煤矿的应用

许厂煤矿运用马丽散支护技术对沿空掘巷煤柱进行加固,与传统注浆的加固技术相比,有效地控制了围岩垮落,提供了出面时间和空间,且施工工艺简单,取得了较好的技术经济效益。     

以和谐的理念推进企业发展——马钢构建和谐企业的实践与思考

近年来,马钢坚持以人为本,全面落实科学发展观,坚持以发展为第一要务,树立和谐发展的理念,努力实现全面协调可持续发展,促进了企业和谐发展.马钢构建和谐企业的实践给人以深刻启示与思考.     

关于马钢企业文化建设中的精神文化系统架构与要素的研究

企业精神文化是企业文化的内核,它承载着企业的优秀传统,决定着企业的发展方向.在马钢精神文化建设的过程中,要体现马钢的传统,反映马钢的实际,针对马钢的发展目标,借鉴其他企业的经验.     

靖边气田马五1气藏地层水形成机理及控制因素分析

结合储层特征及构造演化史，通过马五1气藏地层水形成机理和控制因素分析，将靖边气田马五1气藏地层水演化过程划分为6个阶段。研究认为马五1气藏既无边水，也非底水，无明显的气水边界。所谓气井产水，是成藏过程中由于受区域构造和储层非均质性影响而形成的局部成藏滞留水。     

Origin of dolomite in the Middle Ordovician peritidal platform carbonates in the northern Ordos Basin,western China

The carbonates in the Middle Ordovician Ma_5~5submember of the Majiagou Formation in the northern Ordos Basin are partially to completely dolomitized.Two types of replacive dolomite are distinguished:(1) type 1dolomite,which is primarily characterized by microcrystalline(30 urn),euhedral to subhedral dolomite crystals,and is generally laminated and associated with gypsumbearing microcrystalline dolomite,and(2) type 2 dolomite,which is composed primarily of finely crystalline(30-100 urn),regular crystal plane,euhedral to subhedral dolomite.The type 2 dolomite crystals are truncated by stylolites,indicating that the type 2 dolomite most likely predated or developed simultaneously with the formation of the stylolites.Stratigraphic,petrographic,and geochemical data indicate that the type 1 dolomite formed from near-surface,low-temperature,and slightly evaporated seawater and that the dolomitizing fluids may have been driven by density differences and elevation-related hydraulic head.The absence of massive depositional evaporites in the dolomitized intervals indicates that dolomitization was driven by the reflux of slightly evaporated seawater.The δ~(18)O values(-7.5 to-6.1 ‰) of type1 dolomite are slightly lower than those of seawaterderived dolomite,suggesting that the dolomite may be related to the recrystallization of dolomite at higher temperatures during burial.The type 2 dolomite has lowerδ~(18)O values(-8.5 to-6.7 ‰) and Sr~(2+) concentration and slightly higher Na~+,Fe~(2+),and Mn~(2+) concentrations and~(87)Sr/~(86)Sr ratios(0.709188-0.709485) than type 1 dolomite,suggesting that the type 2 dolomite precipitated from modified seawater and dolomitic fluids in pore water and that it developed at slightly higher temperatures as a result of shallow burial.     

Column ratio mapping: a processing technique for atomic resolution high-angle annular dark-field (HAADF) images

An image processing technique is presented for atomic resolution high-angle annular dark-field (HAADF) images that have been acquired using scanning transmission electron microscopy (STEM). This technique is termed column ratio mapping and involves the automated process of measuring atomic column intensity ratios in high-resolution HAADF images. This technique was developed to provide a fuller analysis of HAADF images than the usual method of drawing single intensity line profiles across a few areas of interest. For instance, column ratio mapping reveals the compositional distribution across the whole HAADF image and allows a statistical analysis and an estimation of errors. This has proven to be a very valuable technique as it can provide a more detailed assessment of the sharpness of interfacial structures from HAADF images. The technique of column ratio mapping is described in terms of a [110]-oriented zinc-blende structured AlAs/GaAs superlattice using the 1 angstroms-scale resolution capability of the aberration-corrected SuperSTEM 1 instrument.     

Measurement method of aberration from Ronchigram by autocorrelation function

Aberrations up to the fifth-order were successfully measured using an autocorrelation function of the segmental areas of a Ronchigram. The method applied to aberration measurement in a newly developed 300kV microscope that is equipped with a spherical aberration corrector for probe-forming systems. The experimental Ronchigram agreed well with the simulated Ronchigram that was calculated by using the measured aberrations. The Ronchigram had an infinite magnification area with a half-angle of 50mrad, corresponding to the convergence angle of a uniform phase.     

高精度幅相变换器的研制

本文阐述了幅相变换器的工作原理，分析了幅相变换器的主要单元电路，介绍了混合集成幅相变换器制造技术并给出了其性能指标。     

Beam spreading and spatial resolution in thick organic specimens

Tomography using a scanning transmission electron microscope (STEM) offers intriguing possibilities for the three-dimensional imaging of micron-thick, biological specimens and assemblies of nanostructures, where the image resolution is potentially limited only by plural elastic scattering in the sample. A good understanding of the relationship between material thickness and spatial resolution is required, with particular emphasis on the competition between beam divergence (a geometrical effect from the converged STEM probe) and beam spreading (an unavoidable broadening due to plural elastic scattering). We show that beam divergence dominates beam spreading for typical embedding polymers beyond the 100-nm thickness range and that minimization of this effect leads to enhanced spatial resolution. The problems are more pronounced in spherical-aberration-corrected instruments where the depth of field is shorter.     

马36区块氮气泡沫水交替驱室内评价研究

应用马36-5-5井地面分离器油气样按气油比24.7 m3/t进行配样,并用马36井区新下23和新下24-5的两组天然岩心进行了长岩心实验测试,研究注氮气泡沫水交替的驱油效率.研究表明,在水驱的基础上,第一组岩心新下23氮气/水交替提高采收率6%左右,氮气/泡沫水交替提高采收率10%左右,如若继续实验,采收率还会进一步提高.第二组岩心新下24-5氮气/水交替提高采收率3%左右,氮气/泡沫水交替提高采收率8%左右,同样如若继续实验,采收率仍会进一步提高.注泡沫水交替效果明显,获得的采收率更高.但是注泡沫水交替的时间较长,注入体积较大,注入压力上升快.