Some species are known only from specimens that have become stranded on beaches.
Specimens that have been exposed to fire or to severe abrasion must be avoided.
Part of Mr. Calderon's job is sorting through 70,000 botanical, geological and paleontological specimens that have been donated to the museum since it was founded in 1909.
So far, the microscope has been used with specimens that have been genetically altered to produce green fluorescent protein, or G.F.P.
In the study, the optimal weight of a pair of halteres closely matched the weight of specimens that have been found at archaeological sites.
The volunteers will be planting more than 2,000 saplings propagated from specimens that have escaped Dutch elm disease.
Traditional glass cabinets hold plant specimens that have "a use or value to mankind" and displays show the indigenous people's ingenuity with what's to hand, such as a giant nut from the fish poison tree – used to stun fish for easy capture.
After all, the word "data" is plural, so we need multiple specimens to really grasp the life and habits of a species".. Still, the Mongolian specimen is just one example of specimens that have eluded researchers and the public and thus remains inaccessible.
Because of their religious content only a small fraction of these escaped destruction by the Spaniards; the few specimens that have survived such as the Codex Borbonicus, the Codex Borgia, the Codex Fejérváry-Mayer, and the Codex Cospi usually come accompanied by Spanish notations.
SEM images were taken for specimens that have been submerged for 6 h.
Laboratory tests were conducted on specimens that have two binders, two air void contents, and three aging periods.
