Dynamic behavior of ground supported cylindrical storage tanks (CST) is of crucial importance because of its applications in industrial complexes. Seismic behavior of tanks is greatly affected by the height to diameter ratio, fluid height and fluid type. Five CSTs with different height to diameter ratios, three CSTs with the same height and diameters but various fluid heights and one CST with t...

two hundred samples were taken from various sites in iran, including coal storage areas, waste water in the tabas and zirab coal mines, and sulphur containing acid springs in ramsar and abask , and were screened for thlobacillus ferruuxidans. during this investigation , seven strains were isolated which could oxidize sdphm , pyrite , thiosdphate and ferrous iron as the sole energy source. macro...

In advance longwall mining, the safety of mine network, production rate, and consequently, economic conditions of a mine are dependent on the stability conditions of gate roadways. The gate roadway stability is a function of two important factors: 1) characteristics of the excavation damaged zone (EDZ) above the gate roadway and 2) loading effect due to the caving zone (CZ) above the longwall w...

Current evidence indicates that the trimming of mannosy1 residues from intermediates in the biosynthesis of the N-linked oligosaccharides of glycoproteins occurs in the Golgi complex. We now present evidence that mannosidase 11 (Tulsiani, D. R. P., Opheim, D. J., and Touster, 0. (1977) J. Bwl Chem 252,3227-3233) is the Golgi enzyme that converts GlcNAcMans species to GlcNAcMans species in compl...

Abstract Peat forming environment strongly influences the economic value of any coal seam and coal-bearing strata. Hence, palaeoenvironmental studies provide important information for resource exploration. In this context, detailed on selected coals from Parvadeh Area, Iran, were conducted using sedimentology, petrology, X-ray diffraction (XRD), scanning electron microscopy- energy dispersive a...

in advance longwall mining, the safety of mine network, production rate, and consequently, economic conditions of a mine are dependent on the stability conditions of gate roadways. the gate roadway stability is a function of two important factors: 1) characteristics of the excavation damaged zone (edz) above the gate roadway and 2) loading effect due to the caving zone (cz) above the longwall w...