Intentional seeding

Intentional seeding is a common practice among chemists who wish to coax the crystallization of a compound from solution or from the melt small crystals or crystallites of the desired material (seeds) are added to the system (e.g. Pavia et al. 1988 Shriner et al. 1997). In this way, the rate-limiting nucleation step, which may be extremely slow, can be accelerated. For this method to be applied, it is of course necessary that a sample of the desired crystalline material is available that is, the compound must have been already crystallized in a previous experiment. When polymorphic forms of a substance are known to occur, intentional seeding with one of the polymorphs is a useful and often the most successful way of preferentially producing it rather than the other form(s). 

An estimate of the number of defects remaining in a program can be obtained by a seeding process that assumes a homogeneous distribution of a representative class of defects. The variables in this measure are Ns the number of seeded faults, ns the number of seeded faults found, and np the number of faults found that were not intentionally seeded. 

However, in the case of immiscible blends with a crystallizable matrix, the spherulite growth can be disturbed to a certain degree by the presence of an amorphous dispersed phase and intentional seeding (nanofillers) localized in the crystallizable matrix or at the interface. In the presence of molten or glassy dispersed phase, along the path of crystallization growth front can markedly disturb the... 

In spite of these hopeful pronouncements and intentions, if one examines carefully many of the agricultural innovations of the twentieth century—innovations that seemed purely technical and hence neutral —one cannot but conclude that many of them created commercial and political monopolies that inevitably diminished the autonomy of the farmer. The revolution in hybrid seeds, particularly corn, had this effect. Since hybrids are either sterile or do not breed "true, the seed company that has bred the parents of the hybrid-cross has valuable property in hybrid seed, which it can sell every year, unlike the open-pollinated varieties which the farmer can select himself. ... 

To stir the heart of a loved one Grind 7 Coriander seeds, naming intent 3 times. Add to A cup boiling water. Add this to food or drink of intended within a couple of hours of making. 

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