On the nature of the junction zone between the Vienna and Pannonian sedimentary basins

The results of long-term (2001–2009) measurements of fractures in sedimentary rocks of the Badenian and Pannonian age within the Rust-Fertorakos Highland and adjacent areas are presented and interpreted in terms of paleostresses in the study. The Rust-Fertorakos Highland has a nearly north-south trending strike and separates the Vienna and Pannonian Basins. It is expressed not only in the topography but also in the thickness of the sedimentary cover. Faults in the basement of the Rust-Fertorakos Highland have a nearly north-south strike diagonal to the general NE-SW strike of the faults of the basement of the Vienna Basin. The data of measurements of joints made in quarries and on road slopes that were subsequently computer processed using two independent techniques indicate that, along with joint systems, which are orthogonal to the rock bedding and are of a primary lithogenetic origin, joints joining to form systems obliquely oriented to the bedding are quite common in the region. These secondary joint systems have been formed at later stages of development of already lithified rocks under the influence of tectonic paleostresses. Interpreting pairs of secondary systems as conjugated shear joints, the authors have reconstructed the orientations of the axes of the relevant tectonic paleostresses. At some observation points, the identification of conjugated shear systems has been ambiguous. In these cases, two possible solutions for the paleostress axes have been drawn. Despite some ambiguities, all of the solutions obtained have a steady tendency in terms of the orientation of the minimum compression axis T ₃. This axis is subhorizontal and is oriented nearly east-west with some variation. The maximum compression axis T ₁ and the intermediate principal stress axis T ₂ are normally inclined to the horizontal, and the orientation of these axes depends on the observation point.     

Rapid,sensitive detection of Vibrio anguillarum using loop-mediated isothermal amplification

Vibrio anguillarum is an important bacterial pathogen of aquatic organisms and a significant problem in aquatic farming.The rapid detection and identification of V.anguillarum,and other pathogens that infect marine organisms,is crucial to effective disease management.In this study,we developed a loop-mediated amplification (LAMP) assay to detect V.anguillarum in an hour in a single tube without the need for thermal cycling.Conserved regions of the metalloproteinase (empA) gene of V.anguillarum served as the targets for primer design.A fragment of the empA gene was amplified at 65°C in the presence of the primer mixture and Bst DNA polymerase.In the optimized LAMP assay,6.7 pg of V.anguillarum DNA could be detected.Six strains of V.anguillarum and 17 strains of non-V.anguillarum bacteria were used in this study to evaluate the species specificity of the primers.The six V.anguillarum strains gave a positive result in the LAMP assay.This method was also validated in V.anguillarum-infected fish.This LAMP method is more sensitive than PCR in the detection of V.anguillarum and shows good species specificity.The LAMP assay is therefore an effective method for the quick detection of V.anguillarum both in the laboratory and in the field.     

Embryonic and larval development in barfin flounder Verasper moseri (Jordan and Gilbert)

Broodstock of Verasper moseri (Jordan and Gilbert) aged 3-4 years old were selected,and reinforced cultivation was conducted to promote maturation under controlled water temperature and photoperiod conditions.Fertilized eggs were obtained by artificial fertilization,and the development of embryos,larvae and juveniles was observed continuously.The results showed that the fertilized eggs of V.moseri were spherical,with transparent yolk and homogeneous bioplasm,and had no oil globule inside.The average diamete...     

Tectonic Evolution of the Thrust-Nappe Belt in the Southwestern Ordos Basin (China): New Constraints from Exploration Seismic Data

Geotectonics - The thrust-nappe belt in the Western Ordos Basin is located in the northern segment of the North‒South structural belt in the mainland China. It is the junction of different...     

A Projection Method for Solving Systems of Linear Equations: Gravimetry Applications

Doklady Earth Sciences - Existing methods for solving inverse problems, such as the regularization method, look mostly for a quasi-solution that may not be a solution to the original problem, but...     

A new map of wetlands in the southern taiga of the West Siberia for assessing the emission of methane and carbon dioxide

A typological map of wetlands in the southern taiga of West Siberia has been compiled based on high-resolution Landsat images. In accordance with the new map, the area of southern-taiga wetlands is estimated at 12.02 Mha at the total wetland area percentage in the subzone estimated at 28%. The final accuracy of determination of various wetland classes is 80%. The use of the new map improved the estimates of methane emissions from southern-taiga wetlands from 0.84 to 1.57 MtCH₄/year, i.e., by 87%. The respiration of wetland ecosystems in the southern taiga of the West Siberia is estimated at 67 MtCO₂/year.     

应用核磁共振测井资料评价储层孔隙结构的改进方法

通过对实验室压汞资料和核磁共振测量资料的对比分析,利用确定压汞孔径分布曲线孔径rc左右边界的方法确定核磁共振T2谱与孔喉半径rc的横向转换系数,利用改进二维分段等面积刻度方法确定其纵向转换系数,使得计算得到的伪毛管压力曲线与实验室压汞测量的毛管压力曲线基本一致。另外,对各种转换系数进行建模,实现在无实验室压汞资料情况下获得定量、连续、高精度的伪毛管压力曲线和孔隙结构参数。将研究成果用于复杂储层评价中,可进行储层分类和估算产能。     

内蒙古赤峰金蟾山金矿深部与外围预测

金蟾山金矿位于位于华北克拉通北缘成矿带中部,赤峰-开原深大断裂与平泉一八里罕大断裂交汇处,喀喇沁变质核杂岩北部,该区金矿点分布密集,金矿床众多,区内还有二道沟、大黑山、黄花沟等近 20 余处金矿床（点）,是我国重要的金矿化集中区之一。金矿床主分布与岩浆、断裂构造关系密切,靠近断裂处矿化尤为集中。矿区分东西两条主矿带,矿化带长一般为数千米,宽可达数百米,而矿化带的矿体长一般为数十米至百余米,厚度1～3m左右,矿体多呈脉状、豆荚状、透镜状等。为研究该区深部和外围找矿前景,对该区与成矿关系密切的安家营子岩体及主要构造分析的基础上,结合岩石化学剖面测量、面积性激电测量及可控源音频大地电磁（CSAMT）剖面测量数据资料进行综合分析,从幔枝构造理论出发构建找矿模式,认为矿体深部和外围仍有一定的找矿潜力。     

Regression Derivatives and Their Application to the Study of Geomagnetic Jerks

Geomagnetism and Aeronomy - New mathematical constructions are developed for the regression smoothing of discrete time series defined on an irregular grid. The new method is used to study secular...     

Univiewer utility for fast interactive 3D visualization of CMB maps in HEALPix pixelizaton

We describe the Univiewer utility for visualizing the celestialmaps in the HEALPix pixelization scheme, which is widely used in data reduction for various experiments involving observations of the cosmic microwave background radiation (CMB). The utility can be used to view the FITS files containing one or several extensions containing HEALPix maps of temperature, intensities, Stokes parameters, integration time per pixel values, etc. The user can interactively change the visualization parameters, apply a coordinate grid, project sky areas onto a plane for further detailed analyses, and compute power spectra. The utility uses OpenGL and wxWidgets cross-platform libraries.