Coloured entities

This compound is isostructural with brucite (Mg(OH)2) and Cdl2. The unit cell is hexagonal with a = 0.3258 nm and c = 0.4605 nm. The structure consists of sheets of corner-sharing, trigonally distorted Fe(OH)6 octahedra stacked along the [001] direction. The Fe" ions occupy only half the available octahedral interstices and this results in a structure in which each filled layer of sites alternates with an empty layer of sites. The OH radical behaves as a single entity. Amakinite is a rare mineral of the composition (Fe,Mg,Mn)(OH)2, also with brucite structure. Fe(OH)2 is readily oxidized by air and even by water, upon which the colour changes from white to brownish. The structure can be maintained up to a replacement of one tenth Fe" by Fe " (Bernal et al., 1959). 

The idea of the self is not the only thing. Buddhism generously adds, to which this argument applies. The same is true of every mental construction. For instance, a cart consists of wheels, shafts, frame, etc. It is these elements the entity carf is a creature of the mind, an illusion. Or, to put it another way, one must not say that this fruit has this form, this colour, this smell, but rather that this fruit is this form and this colour and this smell and so on. Likewise, the mind doesn t have sensations, sentiments, ideas, volitions, etc., but what one calls mind is these things. And the self is that plus material elements. But to believe in a cart or in a pear does not have the same consequences as believing in oneself. 

It remains to examine the third alternative, i.e., formation of a TiCl4-monomer complex, followed by intervention of HCl to give the active species. Olefins such as isobutene and butene-1 interact with TiCl4 as indicated by the appearence of a pale yellow colour in these mbctures prepared in vacuo. However, the complexes must be very weak and in low concentration, since they have never been detected by other techniques, and their apparent extinction coefficients are minute. Given the existence of these rather labile entities, we propose that hydrogen chloride intervenes in the second step of the initiation process through a AdgS-type mechanism ... 

Zinc oxide loses oxygen reversibly at high temperatures and assumes a yellow colour and an enhanced electronic conductivity. The charge carriers are electrons and the conductivity is described as -type (n=negative). It is not certain how the excess metal is accommodated, but it was originally suggested that the excess zinc is present in interstitial positions as two Zii+ ions or one Zn atom. The energy requirement would be more reasonable if the interstitial entity was assumed to be a Zn + ion and the excess electrons considered to be trapped in its nei bourhood, i.e. distributed over a number of... 

Figure 3. Hazards from dislocation of entities. The hazards are labelled with hi tohS. Overlaid embracespartialorcom-plete overlaying. In the latter case, entity E can completely conceal entity F, or vice versa. Colours highlight cells with identical hazards.

Whether it is the existence or nonexistence of an entity, the time of its coming-to-be, the accidents that inhere in a body, the arrangement of the body s atoms, the location of an atom, etc., all of these states of affairs are contingent Whatever state of affairs one postulates, there will be nothing inherent in that state of affairs itself—neither the class of the entity involved (e.g. an atom, an accident of the colour red, or an accident of heat), nor some accident or other present in that state of affairs—that makes it actual. The explanation, therefore, must... 

Out of this wealth of molecular entities, only about 20 have ever been launched on the market. Today ", some 14 pigments are still being used, the latest chemical constitution to be added to the Colour Index being Pigment Red 262. 

In these entities, the first orienting imaging is hy ultrasound (US) including colour Doppler sonography (CDS), mainly to rule out nutcracker syndrome of the (retro-aortal) left renal vein or tumours that can also manifest with haematuria (Fig. 19.1) (also see Sect. 19.5). In post-renal mac-rohaematuria, particularly when painful or with colic, renal calculi must he considered and further radiological imaging may then he required additionally, such as abdominal plain film, IVU or CT (see Chap. 20). 

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