abstract background: dyes are visible materials and are considered as one of the hazardous components that make up the industrial waste. dye compounds in natural water, even in very low concentrations, will lead to environmental problems. azo dyes are compounds with one or more –n=n– groups and are used in textile industry. because of its low price, solubility, and stability, azo dyes are widel...

background: in process industries, production, storage, transportation, usage and disposal of chemicals are inherently dangerous and the risk of catastrophic accident occurrence is potentially high. to improve safety level in these industries, establishment of process safety management (psm) system is considered as the most effective measures. this study was conducted to determine the degree of...

in this paper, we show that the conditional transform with respect to the gaussian process involving the first variation can be expressed in terms of the conditional transform without the first variation. we then use this result to obtain various integration formulas involving the conditional $diamond$-product and the first variation.

a procedure is presented that synthesizes fractional crystallization separation processes to obtain pure solids from multi-component solutions. the method includes a procedure to generate a network flow model to identify alternative process designs for fractional crystallization. the main advantage of this systematic procedure with respect to other reported procedures is using non-equilibrium s...

Statistical process control is an excellent quality assurance tool to improve the quality of manufacture and ultimately scores on end-customer satisfaction. SPC uses process monitoring charts to record the key quality characteristics (KQCs) of the component in manufacture. This paper elaborates on one such KQC of the manufacturing of a connecting rod of an internal combustion engine. Here th...

abstract. in the case of process capability index several methods are identified. in this paper ,a new process capability index using fuzzy number and fuzzy probability concept, in order to remove the weakness of other famous method is suggested. after introduction of fuzzy index in univariate case, fuzzy multivariate process capability index is investigated. finally, this new method is compare...

Abundant pyrite in black shales at the Permian-Triassic Boundary (PTB) from several localities around world has been regarded as evidence of oceanic anoxia during end-Permian mass extinction (EPME). However, a significant amount “pyrite” these rocks is not actually but marcasite, orthorhombic polymorph FeS2. Marcasite particularly sensitive to changes pH and fO2, which theoretically enables it ...

Abstract The main goal of the paper is reconstruction a Middle Triassic buildup cropping out in central part Southern Apennines. reefs western Tethys realm are well known Northern and Alps. In contrast, few studies Anisian–Ladinian carbonate platforms southern Apennines available, due to diagenetic alteration tectonic disruption that hinder their paleoenvironmental stratigraphic reconstruction....