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Style is knowing who you are, what you want to say, and not giving a damn.
— Gore Vidal
Typefaces: Didot, Leander Script Pro
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And absence of "styolite" in the AGI Dictionary of Geological Terms (Bates & Jackson, eds., 1984 edition)
This was, I think, a design magazine that wanted a clear statement of what I intended for the site but on a single page.
gina's cat sierra. gina claims i've adopted her but Sierra and i know
the truth. sierra's adopted me.
Scanned Neg set 175. Higher definition rescans are available. This set covers the removal (and filling-in of Bridge 134 near Bow of Fife LC. When the railway was built in 1847, there was no level crossing (or even Road) where Bow of Fife LC is now. Travellers either used Sweetholm LC on the Pitlessie to Collessie turnpike, or went on a road into Ballomill farm, went under this bridge, and then used the Peterhead Farm road to get back onto the road north to Bow of Fife.
The word grok, created in the 1960s by science fiction author Robert Heinlein has been increasing in use.
By definition, an albino deer is totally absent of body pigment and is solid white with pink eyes, nose, and hooves. Often confused with an albino, a piebald deer is slightly more common and is also a genetic mutation. Piebald deer can have varying amounts of white hair. Some piebald deer can be almost pure white except small patches of regular brown hair, while others carry just patches of white hair with otherwise normal markings. Otherwise, an albino or piebald white-tailed deer will have the normal characteristics of other white-tailed deer.
Albinism is a recessive genetic trait that is found in animals where the gene responsible for hair, tissue, or skin coloration is missing. By definition, this is why they have no body pigment. Since albinism and piebaldism are recessive traits, both parents must carry the trait to have albino or piebald offspring. The genes responsible for piebald and albino deer are not dominant and oftentimes the deer carrying these genes are biologically inferior to others in the deer herd.
So if an albino buck were to breed a doe that is not, they could only have an albino offspring if she carried the recessive genes for albinism. These offspring would carry the recessive gene but would have normal pigmentation. When two whitetails breed that carry the recessive genes, they have around a 25 percent chance of producing an albino fawn. Research says that your chances of seeing an albino in the wild are about one in 30,000, although there are some areas in the north that seem to have higher occurrences of true albino whitetails.
Hanging out at the Definition 6 House of Blood Halloween Party. For more party pics, check out our blog post: bit.ly/s8P0yr
Photo credit: Kelly Samardak
The curing reaction mechanism of anhydrides can be divided into two forms according to the presence or absence of accelerators.
1. In the absence of accelerants, the hydroxyl group in epoxy resin reacts with anhydride first, and the anhydride is turned on, then the addition polymerization is carried out. The order is as follows:
Hydroxyl reacts with anhydride to form ester bond and carboxylic acid.
Carboxylic acid is added to epoxy group to form hydroxyl group.
The hydroxyl groups formed continue to react with other anhydrides.
The reaction proceeds repeatedly to form bulk polymers. In addition, in this system, due to the acidic state, the reaction parallel to the above reaction is the reaction of other epoxy groups with hydroxyl groups, resulting in the formation of ether bonds. From the above mechanism, it can be seen that there are two kinds of structures in the cured product: ether bond and ester bond, and the reaction rate is controlled by the concentration of epoxy group and hydroxyl group.
2. In the presence of accelerants, the acid anhydride curing reaction is promoted by Lewis base. Accelerators (usually tertiary amines) initiate an attack on anhydride. The main reactions are as follows:
accelerator attacked anhydride to form carboxylate anion.
carboxylate anion reacts with epoxy group to form oxygen anion.
oxygen anion reacts with other anhydrides to form carboxylate anion again.
In this way, acid anhydride reacts with epoxy group, and additive polymerization is carried out step by step. In the presence of promoter Lewis base, all the bonds formed are ester bonds, and no ether bond was found as in the absence of promoter.
In the presence of accelerants, the curing rate of epoxy resin is also controlled by the concentration of hydroxyl groups in the acceptor system. Therefore, the addition of accelerators is very effective for liquid epoxy resin, and the curing reaction can be completed at the temperature of the 120～150℃. But for solid epoxy resin, we should pay attention to the problem of very short application period. In the absence of accelerants, theoretically, an epoxy group should be used for an anhydride, but in fact, only 80%-90% of the theoretical chemical quantity is enough. In the presence of accelerants, the amount of anhydride used is the chemical theoretical quantity.
www.wsxchem.com/resources/acid-anhydride-curing-agent-gui...