In modern steelmaking the duration of a working campaign for a blast furnace is related to the life of the crucible. Adding titanium oxide has been a frequent practice in the operation routines for modern blast furnaces, seeking the protection of the crucible walls, independently from its physical or chemical characteristics. These practices, as conventional operation of iron and steelmaking in...

Hydrodynamic cavitation is a promising application in wastewater treatment due to its simple reactor design and capacity in large-scale operation. Theoretical studies including the basic mechanism of pollutant degradation, modeling of pressure distribution in the cavitation reactor, and bubble dynamics models coupled with chemical reactions are evaluated. Experimental setups with different cavi...

Component-Based Development (CBD) is gaining popularity as an effective reuse technology. Components in CBD are mainly for interorganizational reuse, rather than intra-organizational reuse [1]. One of the common forms of reusing commercial-off-the-shelf (COTS) components is to acquire and customize them for each application. Therefore, components must be developed with consideration of commonal...

a bioreactor equipped with hollow fiber microfiltration membranes was applied for wastewater treatment. removal of chemical oxygen demand (cod) and biochemical oxygen demand (bod5) was investigated. the experimental setup consisted of influent and effluent tanks, and membrane modules using polyvinyl di–fluoride (pvdf) hollow fibers. the operation program included suction and backwash steps whic...

In this paper, we study the class of rings that satisfy internal direct sum cancellation with respect to their 1-sided ideals. These are known to be precisely the rings in which regular elements are unitregular. Further characterizations for such “IC rings” are given, in terms of suitable versions of stable range conditions, and unique generator properties of idempotent generated right ideals. ...

Industrial Batch Polymerization System Zoltan K. Nagy, Ruediger Franke, Bernd Mahn, and F. Allgoewer Nowadays chemical and related processing industries are faced with the need of increasingly precise control of product properties to meet specific demands. It is recognized that nonlinear model predictive control (NMPC) is an excellent candidate as a key enabling technology for the continued suc...

We developed polynomial expressions for the temperature dependence of the mean binary and water activity coefficients for H2SO4 and HNO3 solutions. These activities were used in an equilibrium model to predict the composition of stratospheric aerosols under a wide range of environmental conditions. For typical concentrations of H20, H2SO4, HNO3, HCI, HBr, HF, and HOCI in the lower stratosphere,...

Journal of Chemical Information and Computer Sciences is published by the American Chemical Society. 1155 Sixteenth Street N.W., Washington, DC 20036 Operation of an international data center: Canadian Scientific Numeric Database Service Gordon H. Wood, John R. Rodgers, and S. Roger Gough J. Chem. Inf. Comput. Sci., 1993, 33 (1), 31-35• DOI: 10.1021/ci00011a006 • Publication Date (Web): 01 May ...

The entry-into-force of the Chemical Weapons Convention (CWC) on April 29, 1997, marked the beginning of the operation of the Organization for the Prohibition of Chemical Weapons (OPCW) in The Hague, the Netherlands. This organization consists of three major bodies: the Conference of State Parties (CSP), the primary policymaking forum comprising all member-states; the 41-country Executive Counc...