Wrap-around operator

In model constraints given next, Q is a wrap-around operator (Shat et al., 1993), r, holds the duration of tasks in number of time intervals (5=8 h) and set K, gives the tasks belonging to chemical z. The objective function minimizes the total cost of the schedule in relative money units (r.m.u.). Eq 2 ensures that the volume handled by the task does not exceed the capacity of the vessel Vm. Eq 3 ensures that material production only occurs if the corresponding task is executed. The periodic schedule features exactly one batch of each chemical (eq 4). Eqs 5-6 are the excess resource balances. Eq 7 ensures that the start-up procedure does not require more units than those available. 

Electrical strip heaters, wrapped around the three stainless steel vessels enable them to be operated at any desired temperature. Thermocouples strapped to the surfaces of the vessels permit measurement, of their temperatures and, coupled to controllers, maintain the vessels at constant temperature or ensure that the rate of change of the temperature of the vessels is not excessive, so avoiding unnecessary thermal stress in them. 

The concept of using decoupled coils has been developed further by Li et al. [19]. In this case, an RF switch was used for time-domain multiplexing of the signals into a single receiver channel. A four-coil system was constructed for operation at 6 T in a wide-bore (89 mm) magnet. Each coil was fabricated by using 17 turns of 50 pm diameter copper wire wrapped around a 180 pm i.d., 355 pm o.d., polyimide-coated fused silica capillary, giving an observe volume... 

In the use of shrink packaging where a polymer is oriented, wrapped around a package, and then heated to cause melting, shrinkage, and reduced orientation (see New Operations section, p. 174). 

A family uses a commercially available desalinator, similar to those developed by the Navy for life rafts. The essential part of these desalinators is a cellophane-like membrane wrapped around a tube with holes in it. Seawater is forced through the tube by a hand-operated pump at pressures of about 70 atm to produce water with a salt content only 40% higher than that from a typical tap. 

Liquid sodium is sealed into pipes that surround the core of the reactor. As heat is generated, it is absorbed (taken up) by the sodium. The sodium is then forced through the pipes into a nearby room. In that room, the sodium pipes are wrapped around pipes filled with water. The heat in the sodium converts the water to steam. The steam is used to operate devices that generate electricity. 

How another piece of kraft paper is cut to a also big enough to wrap around tha shell a couple of times and extend outward about three inches at both ends of the shell tbe else for cutting these abeete for additional shells of the same dimensions can be determined after tbe following operations Tbe sheet should be wrapped and pasted down tightly over the shell and piped match, then checked against tbe mortar to be need for proper "windage". 

This process usually relies on the item or load rotating (e.g. a pallet) while the film reel is held vertically so that it can operate with a spiral motion. With simple hand wrapping, the operator walks around the item, applying layers which overlap in a spiral motion. Since these processes can only be applied to the sides of a pallet, a top sheet inserter may be employed to cover the top. This is then held in position by a stretch layer. The level of stretch achieved depends on the material employed, the uniformity of the load and the process employed. If a material is over-stretched i.e. the natural yield point is exceeded, the film becomes less puncture resistant and may break. Limits of stretch by these processes are around 50-60%. 

Pentacene TFTs were integrated with a composite rubber layer, whose conductivity changes as pressure is applied into a 16 x 16 sensor matrix that can operate even when the substrate is wrapped around a cylindrical bar. 

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