A methodology for multi-level conceptual design and analysis of crystallization-based separation processes involving electrolyte systems is presented. The methodology consists of three main parts: thermodynamic part (level 1), flowsheet design/analysis part (level 2) and flowsheet validation (simulation) part (level 3). In this paper, the integration of the thermodynamic and design/analysis par...

Flowsheet Diagram Process Flowsheet Diagram Figure 3.3: Central role of the flowsheet in chemical engineering design [Jarke et al., 1999a] manner the viewpoints and assumptions of the various design experts about the current state of design [Jarke et al., 1998b, 1999a]. Figure 3.3 illustrates the interconnection patterns between the central flowsheet and other information units used for the IMP...

While nursing documentation in electronic medical record (EMR) flowsheets may represent the largest investment of clinician time with information systems, organizations lack tools to visualize and repurpose this data for research and quality improvement. Incorporating flowsheet documentation into a clinical data repository and methods to reduce the flowsheet ontology's redundancy are described....

CEP www.cepmagazine.org October 2005 25 The design of a chemical process involves synthesis and analysis. Process synthesis is the overall development of a process flowsheet by combining individual steps (equipment and operating conditions) into an optimal arrangement. Process analysis breaks down the flowsheet to evaluate the performance of each individual element as well as how the overall pr...

The purpose of this study was to create information models from flowsheet data using a data-driven consensus-based method. Electronic health records contain a large volume of data about patient assessments and interventions captured in flowsheets that measure the same "thing," but the names of these observations often differ, according to who performs documentation or the location of the servic...

The appearance and form of piping and instrumentation diagrams (P&IDs) have changed little over time, despite decades of technology improvements. A P&ID created 60 years ago on the drawing board, using ink pens on linen sheets, describes a process the same way as one created today using modern computer-aided design (CAD) software. P&IDs continue to be fundamental references for any process faci...

Routing neptunium to a single product in spent nuclear fuel reprocessing is a significant challenge. In this work, we have further improved the simulation of neptunium extraction in an advanced PUREX flowsheet by applying a revised model of the Np(V)-Np(VI) redox reaction kinetics, a new nitric acid radiolysis model and by evaluating various models for the nitrous acid distribution coefficient....

CONTEXT As electronic health records (EHRs) are adopted by teaching hospitals, educators must examine how this change impacts trainee development. OBJECTIVES We investigate this influence by studying clinician experiences of a hospital's move from paper charts to an EHR. We ask: how does each chart modality present conceptions of time and data interconnections? How do these conceptions affect...

Approach • Review all published papers, reports, patents, etc. in the past 25+ years that relate to thermochemical water-splitting cycles, in general, and solar driven cycles, in particular. • Use FactSageTM program to perform chemical equilibrium calculations. • Employ HYSYS/ASPEN Plus chemical process simulation (CPS) program for developing process flowsheet, process analyses and optimization...

High performance processes should operate close to design boundaries and specification limits, while still guaranteeing robust performance without design constraint violations. Since design chemical process is operating close to tighter boundaries safely; much attention has been devoted to integrating design and control, in which the design decisions, dynamics, and control performance are consi...