Abstract: A camouflage covering which has a surface coating composition which is a metamer of a natural object from an environment of an animal, such as plant life or soil, as perceived by the vision system of the animal, which is created by completing the steps of creating a mathematical model of the vision system of the animal, measuring a set of spectral characteristics from the natural object, entering the set of spectral characteristics as an input into the mathematical model, and using an output of the mathematical model to iteratively create the surface coating composition.

Abstract: A camouflage covering which has a surface coating composition which is a metamer of a natural object from an environment of an animal, such as plant life or soil, as perceived by the vision system of the animal, which is created by completing the steps of creating a mathematical model of the vision system of the animal, measuring a set of spectral characteristics from the natural object, entering the set of spectral characteristics as an input into the mathematical model, and using an output of the mathematical model to iteratively create the surface coating composition.

Abstract: A method for producing products containing cyclic organic compounds from biomass oil includes adding a biomass oil to a vessel; heating the biomass oil to crack the biomass oil; removing undesired or unreacted materials, heavy ends, and light ends from the cracked biomass oil; and extracting components from the cracked biomass oil to produce a mixture of products containing between 5% and 90% cyclic organic compounds by weight. A method for producing a high-octane aviation fuel with low lead content includes cracking a biomass oil, separating a middle distillate mixture from cracked biomass oil, decarboxylating the middle distillate mixture to produce a mixture of products containing at least about 50% cyclic alkane and alkene compounds by weight, and blending the mixture of products with a fuel having an octane number below 95 to produce an aviation fuel having an octane number of at least 100.

Abstract: A method for producing a mixture of short chain carboxylic acids from biomass includes adding biomass to a reactor vessel, heating the biomass to crack it, removing undesired and unreacted materials and light ends from the cracked biomass, and removing a mixture containing carboxylic acids having carbon chain lengths between C2 and C16. A composition includes a carboxyl group-containing compound derived by cracking biomass and having a carboxyl carbon chain length between C2 and C16.