background: the study aims at clarifying prevalence of work-related musculoskeletal disorders (wmsds) among steel mak­ing workers and employees as well as associated lost work days. methods: a detailed questionnaire based on nordic ergonomic questionnaire describing work history, ergonomic condi­tions at work, sign and symptoms of musculoskeletal system with in previous12 months was applied to ...

Azadirachta indica (AZI, commonly recognized as “Neem”) is noteworthy both for its chemical and for its biological actions. It is one of the most fruitful sources of secondary metabolites in nature. To date, more than 300 natural products have been isolated from different sections of the tree, with new compounds added to the list every year. As a contribution to the current interest on green co...

Process industries show an ever-increasing interest in reducing their environmental impact and energy consumption as well as maintaining an acceptable profit. This is particularly true for industries such as the steel one, which is among the highest energy consumers worldwide. Process modelling and optimization are techniques by which this problem can be effectively addressed, particularly if t...

This research determines the optimal investment timing using real options valuation to support decision-making for economic sustainability assessment. This paper illustrates an option pricing model using the Black-Scholes model applied to a case project to understand the model performance. Applicability of the project to the model requires two Monte Carlo simulations to satisfy a Markov process...

The mechanical properties, the creep response and the microstructural features of P91 steel have been extensively investigated in recent years since this steel and its derivatives have been used for the production of pipes and tubes. Nevertheless, in plant experience on rolling facilities, showed that the formability of different heats of similar composition can be dramatically different. The o...

Microbiological studies of spent nuclear fuel pools at the Cofrentes Nuclear Power Plant (Valencia, Spain) were initiated to determine the microbial populations in the pools' water. Biofilm formation at the nuclear power plant facilities and the potential use of those microbial populations in the bioremediation of radioactive water were also studied. Biofilm formation was analyzed by immersing ...

This paper introduces the Steel Cold Rolling Ontology (SCRO) to model and capture domain knowledge of cold rolling processes activities within a steel plant. A case study is set up that uses real-world data sets validate performance functionality SCRO. includes using Ontop framework deploy virtual graphs for access, integration, querying, condition-based maintenance purposes. SCRO evaluated OOP...

OBJECTIVE The aim of ideal canal preparation is to prevent iatrogenic aberrations such as transportation. The aim of this study was to evaluate the root canal transportation by Reciproc file with and without glide path. MATERIALS AND METHODS Thirty acrylic-resin blocks with a curvature of 60° and size#10 (2% taper) were assigned into two groups (n= 15). In group 1, the glide path was performe...