CEP: April 2010 What will you be doing on Thursday, April 22? At CEP, our critical-path activity will be performing a final on-screen check of the pages that will become the May issue. But we will also make time to celebrate Earth Day. I hope you will, too... Share Designing Four-Pass Trays April2010Back To BasicsDaniel R. SummersUse this procedure to design four-pass distillation column trays and to balance the vapor/liquid ratio on each tray panel. Preventing Maldistribution in Multi-Pass Trays April2010Reactions and SeparationsRichard Dionne, Henry Z. Kister, Matthew R. Olsson, Walter J. StupinThis method, based on hydraulic equations in the open literature, calculates vapor/liquid distribution in four-pass trays to correctly predict flooding and efficiency. Contemplating a New Phase of Your Career April2010Career CatalystLisa L. WalkerToday’s employment environment has altered the concept of “career.” If you are attempting to change jobs or enter a different industry — or even considering a second career — it is important to understand your motivations and proceed with care. Using High-Fidelity Dynamic Simulation to Model Compressor Systems April2010Fluids and Solids HandlingAbhilash Nair, Ian WillettsEnjoy the benefits of “20-20 hindsight” even before commissioning a new compressor or new compressor controls. Preparing Invention Disclosures April2010ManagementWilliam D. HallThe patent process can be a costly journey down a long and winding road. An invention disclosure serves as a roadmap for preparing the patent application and ultimately obtaining a valid, enforceable patent. Copyright Permissions: Would you like to reuse content from CEP Magazine or purchase an article reprint? Learn more about Reprints and Permissions.