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The new mining act that becarne effective in Hungary in 1993 instituted the payment of royalties for the minerals produced
and sold annually. To arrive at the amount of mineral production, the Hungarian Geological Survey (HGS) conducts the National
Inventory, which is used by the Mining Bureau of Hungary (MBH) to verify the mining royalty payment obligations. This paper
explains the major legal requirements for the mining royalties and how the values of the minerals are calculated. It also
describes the first experience with the declaration and payment of the mining royalties and provides the declared and paid
1995 royalties.
The Mining Bureau of Hungary reports on the introduction of the mining royalty system that became effective with the Mining
Act in 1993. This article is sponsored by the U.S. Hungarian Science and Technology Joint Fund under Project Joint Fund Number
539. 相似文献
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The Late Ordovician glacio-fluvial Sarah Formation is an important tight gas reservoir target in Saudi Arabia. This study uses statistical methods to characterize the petrophysical heterogeneity of the paleovalleys of the Sarah Formation that crop out in central Saudi Arabia. Four paleovalleys were studied: Bukayriyah, Hanadir, Sarah, and Khanasir Sarah. Several lithofacies were identified in each that vary in texture, porosity, permeability, and facies abundance that reflect periods of ice advance and retreat. The heterogeneity analysis is based on three statistical measures, namely, the coefficient of variation, the Dykstra-Parsons coefficient, and the Lorenz coefficient. The coefficient of variation values is in the 0.62–1.94 range, indicating an extremely heterogeneous distribution. The Dykstra-Parsons coefficient values are in the 0.56–0.88 range, suggesting very high to extremely high heterogeneity in the reservoirs. The Lorenz coefficient correlates well with the Dykstra-Parsons coefficient for paleovalleys of the Sarah Formation. The heterogeneity parameters studied here indicate that the outcrops of Sarah Formation paleovalleys represent heterogeneous to very heterogeneous reservoirs, which may be attributed to complex depositional and diagenetic variations that have affected the porosity and permeability distribution. 相似文献
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Gabor Pszota Hui Zhang Feng Yuan Wei Cui 《Monthly notices of the Royal Astronomical Society》2008,389(1):423-428
We report results from a systematic study of X-ray emission from black hole transients in quiescence. In this state, mass accretion is thought to follow the geometry of an outer optically thick, geometrically thin disc and an inner optically thin, geometrically thick radiatively inefficient accretion flow (RIAF). The inner flow is likely also coupled to the jets near the black hole that are often seen in such systems. The goal of the study is to see whether the X-ray emission in the quiescent state is mainly powered by the accretion flow or by the jets. Using data from deep XMM – Newton observations of selected black hole transients, we have found that the quiescent X-ray spectra are, to a high precision, of power-law shape in the cases of GRO J1655-40 and V404 Cyg. Such spectra deviate significantly from the expected X-ray spectrum of the RIAF at very low-accretion rates. On the other hand, they can naturally be explained by emission from the jets, if the emitting electrons follow a power-law spectral distribution (as is often assumed). The situation remains ambiguous in the case of XTE J1550-564, due to the relatively poorer quality of the data. We discuss the implication of the results. 相似文献
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Gabor Korvin 《Pure and Applied Geophysics》1989,131(1-2):289-305
Recent geophysical studies revealed that the Palaeozoic basement of the Gulf of Suez consists of an enormous number of fault blocks whose network qualitavely resembles the contraction-crack polygons which can be found in nature in a wide variety of materials and on all scales (mud cracks, hardening concrete, age cracking in paintings,etc.). The fault network of the Gulf of Suez basement forms a rather uniformly spaced polygonal pattern, most of the blocks are four-sided, the lengths of block sides parallel with the Gulf of Suez axis are exponentially distributed. The power-law size distribution associated with the fractal (scale-free) fragmentation can be possibly ruled out.The paper calls attention to the necessity of calssifying the physical processes leading to fragmentations with exponential-, lognormal-, and power-law size distributions, respectively. 相似文献