Semipermanent structures

Derrick A semipermanent structure of square or rectangular cross-section having members that are latticed or trussed on all four sides. This unit must be assembled in the vertical or operation position, as it includes no erection mechanism. It may or may not be guyed. 

Long-term memory involves semipermanent structural changes that allow you to recall things experienced and learned a long time ago. 

The primary function of the Sense of identity subsystem is to attach a "This is me" quality to certain aspects of experience, to certain information in consciousness, and thus to create the sense of an ego. Presumably semipermanent structures exist incorporating criteria for what the "This is me" quality should be attached to. However, the functioning of the Sense of identity subsystem varies so greatly, even in the ordinary d-SoC, that I emphasize the extra informational aspects of the "This is me" quality rather than the structures underlying it. 

Temporary, nonpermanent structures may be used at processing facilities. The most common are mobile office trailers used during construction or periodic major unit overhaul or turnaround. A common practice is that these temporary offices are located near processing areas for convenience and are not removed on completion of the job thus, they transition from temporary to semipermanent. 

The Memory subsystem is concerned with information storage, with containing residues of past experiences that are drawn upon in the present. Memory is thus a large number of semipermanent changes caused by past experience, we can think of memory as structures, presumably in the brain (but perhaps also in the body structure), which, when activated, produce certain kinds of information. And we should not assume that there is just one Memory there is probably a special kind of memory for almost every subsystem. 

The dyeing process provides for temporary, semipermanent (direct dyes), and oxidation-type reactions (semipermanent or permanent colors). It may involve absorption or adsorption (electrostatic) of the colorant into/to the hair structure, bleaching or otherwise masking the natural melanin col-... 

Asymmetric autocatalysis, where the structures of chiral catalyst and the product are identical, i.e., the chiral product plays the role of the chiral catalyst, is a very intriguing system from both scientific and synthetic standpoints (Scheme 15) [42,43]. From the latter standpoint, it intrinsically possesses the following advantages over conventional asymmetric reactions, where the structures of the chiral catalyst and product are different from each other 1) The number of multiplication is practically infinite. 2) the chiral catalyst is semipermanently active without deterioration. 3) A separating process for catalyst and the product is not needed. 

A reversible gel based upon dissociable cross-links is characterized by the finite size of the network that is chemically linked into a unit at any instant. In a reversible gel, some of the network connections will always open, close, and interchange. A reversible gel, too, can thus be divided into structural subentities, but the bonds that link these substructures into a macroscopic whole do not possess infinite lifetimes. The coherence of the system depends upon it being contained in a chemically closed, semipermanent, mechanically rigid confinement. A reversible gel cannot, for example, be brought into true (open) swelling equilibrium with an excess of... 

Fixed Crane A crane whose principal structure is mounted on a permanent or semipermanent foundation. 

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