In the present study, an investigation was carried out on Parvadeh coal mine in Tabas, Iran, to survey the effect of fractures on unusual methane gas emission in coal mines. This coal mine was chosen for investigating because of its high methane gas content in the coal body and available data from sensors in desired locations. Gas concentration monitoring programs were carried out at the mine s...

in the present study, an investigation was carried out on parvadeh coal mine in tabas, iran, to survey the effect of fractures on unusual methane gas emission in coal mines. this coal mine was chosen for investigating because of its high methane gas content in the coal body and available data from sensors in desired locations. gas concentration monitoring programs were carried out at the mine s...

high-cholesterol diet can be the fast track to a heart attack. But scientists are only now discovering that one of cholesterol’s most damaging effects might stem from its ability to make blood cells self-destruct. The findings appear in a pair of recent studies directed by Ira Tabas (Columbia University, New York, NY). Cholesterol is abundant in atherosclerotic lesions, which become most danger...

Methane gas emission, accumulation, and explosion are the most important risk factors in underground coal mines. Hence, having a knowledge of methane gas emission potential in underground coal mines is of crucial importance in preventing the explosion risk, loss of life, and property, and providing miners' safety. The purpose of this work is to provide the prediction maps for the C1, C2, and B2...

high-cholesterol diet can be the fast track to a heart attack. But scientists are only now discovering that one of cholesterol’s most damaging effects might stem from its ability to make blood cells self-destruct. The findings appear in a pair of recent studies directed by Ira Tabas (Columbia University, New York, NY). Cholesterol is abundant in atherosclerotic lesions, which become most danger...

The TabaseColshan catastrophic earthquake of 16 September 1978 of magnitude M ~ 7 . 7 , the largest shock which has ever been recorded in Iran, occurred in Khorassan Province east central Iran (Fig. 1). The main shock took place in the evening, when most people were in their houses, at 19.38.18 local time (1535.58 GMT), without any felt foreshock. The preliminary instrumental epicentre is recor...

The study area is situated in the Middle part of the Tabas Block. It contains outcrops of rocks that formed along longitudinal faults in Early Cimmerian orogenic phase. The basin subsided along these faults from the Late Triassic to Early Cretaceous, which include two sedimentary cycles. A sedimentary cycle, related to Upper Triassic to Bajocian is known as Shemshak group. Another sedimentary c...

Background: Different bracing systems of steel Eccentric Braces (EBs) and steel-concrete Buckling-Restrained (BRBs) can be used in frames order to make the stronger resisting lateral loads. These with EBs or BRBs are generally called Eccentrically Braced Frames (EBFs) (BRBFs), respectively. Objective: This study aims investigate having moment link. Methods: The EBFs BRBFs nonlinearly analysed e...