Multiple product option

For single separation duty, Diwekar et al. (1989) considered the multiperiod optimisation problem and for each individual mixture selected the column size (number of plates) and the optimal amounts of each fraction by maximising a profit function, with a predefined conventional reflux policy. For multicomponent mixtures, both single and multiple product options were considered. The authors used a simple model with the assumptions of equimolal overflow, constant relative volatility and negligible column holdup, then applied an extended shortcut method commonly used for continuous distillation and based on the assumption that the batch distillation column can be considered as a continuous column with changing feed (see Type II model in Chapter 4). In other words, the bottom product of one time step forms the feed of the next time step. The pseudo-continuous distillation model thus obtained was then solved using a modified Fenske-Underwood-Gilliland method (see Type II model in Chapter 4) with no plate-to-plate calculations. The... 

Figure 20.6 Multiple product option with propane feedstock (US Patent 6,166,241 (2000)). Adapted from [18a],...

TOXNET is a series of databases on chemical toxicity hosted by the National Institutes of Medicine, which allows multiple searching options. The databases include ChemIDplus, HSDB, Toxline, CCRIS, DART, GENETOX, IRIS, ITER, LactMed, Multi-Database, TRI, Haz-Map, Household Products and TOXMAP. 

Morphine is often the choice in this category (1) multiple products available (2) multiple route of administration options, such as oral, rectal. IM. SC. IV. epidural, and intrathecal and (3) a known eqiipotency between these routes that allows a much easier transition. 

Our time frame and budget allow us to support the exploration of multiple production, delivery, and storage pathways, and to reevaluate the feasibility of different options with phased "go/no-go" decision points. Systems integration is crucial. Hydrogen production, storage, and delivery methods must complement each other, and the feasibility of one method will depend upon its compatibility with other parts of the system. This is why we have established a systems integration plan to analyze all models and pathways and to appropriately integrate individual efforts with overall objectives at the macro-system level. 

To cater to the fragmented demand and to be responsive and turn fashion products quickly, an apparel company must be able to produce small mns of multiple options. The success of companies like Zara is based on short lead times with more fashionable clothes and smaller quantities, providing shopping excitement for consumers, which leads to an increase in sales (Watson, August 21,2014, pers. comm.). With the ability to bring a new style within 2—4 weeks, Zara produces about 12,000 styles per year (Dutta, 2002). These multiple style options are preapproved and the production capacities are prebooked. 

The CHNS and O analyzer offers speed, precision, and ease of use for the compositional analysis of solid or liquid materials. This analyzer is based on the classical organic analysis Pregl-Dumas technique and provides important information to the scientist regarding product compositional chemistry. This analyzer offers the user multiple analysis options, including carbon, hydrogen, nitrogen, sulfur, and oxygen (CHN or CHNS and O2 analysis). The user may choose one or more options to suit the needs of the labora-... 

The shoe manufacturer, in turn, must configure its upstream supply chain by selecting appropriate parts, processes, and vendors. The problem becomes intricate because a certain raw material can be supplied by more than one vendor, the product may require several machines or processes for manufacturing, and multiple shipping options may be available to deliver the product to customers. The fact that the company must plan the supply chain in the cmitext of its existing supply chain for other products - using some of its current vendors and logistics providers - may induce additional complexity. 

For VOCs, control options are multiple. Source reduction or removal includes product substitution or reformulation. Particleboard or pressed w ood has been developed and used extensively in building materials for cabinet bases and subflooring and in furniture manufacturing for frames. If the product is not properly manufactured and cured prior to use as a building material, VOCs can outgas into the interior of the residence or building. Other sources of VOCs may be paints, cleaning solutions, fabrics, binders, and adhesives. Proper use of household products will lower volatile emissions. 

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