... undistorted microtome sections (15μ thick) were cut from oriented samples of peat impregnated with paraffin. By comparison with reference slides of modern plant tissues, it was possible to identify the genera and sometimes the species of plants contributing to the peat even though there were only much-altered...

...Benjamin N. Akpati Abstract The use of biological microtomes in sectioning foraminiferal tests makes it possible to cut continuous serial sections from the same specimen for light microscopy and also offers a potential for use in cutting electron microscopy size sections. Epon 812 (mixture B) gives...

... of Cr in silicate minerals and glasses. Silicates are more soluble and generally more susceptible to weathering than the refractory mineral chromite, the principal ore mineral of Cr. Studies at the nanoscale using a combination of advanced sample preparation via microtoming and focused ion beam...

... examined. To prevent possible intrusion of epoxy resin into interlayers during embedding, the clay samples were first embedded in epoxy, sectioned with an ultra microtome, and then treated with octadecylammonium cations before examination using HRTEM. Lattice-fringe images showed that lower-charge...

...-reduced and Fe(III)-reduced nontronite, observed by EC-TEM, exhibited fringes with mean d 001 spacings of 1.50 nm (standard deviation, σ = 0.08 nm) and 1.26 nm (σ = 0.10 nm), respectively. In comparison, the same samples embedded with Nanoplast resin, sectioned by microtome, and observed using...

.... Botanical parent material, inferred from 13 C signatures and microtome sections, is always freshwater, originating either in forested swamps, or under herbaceous (floating) mats. Sphagnum spp. is essentially absent. In order for peat to accumulate, rates of accretion and subsidence must balance. Long-term...

... important peat producers throughout much of the history of peat formation in the swamp. The peat samples were dehydrated in alcohol, embedded in paraffin (using the methods of Cohen and Spackman, 1972), and sectioned (to 15 µ) with a sliding microtome. The microscopic features found to be most useful...

...ARTHUR D COHEN Abstract An allochthonous beach deposit of peat from southern Florida was investigated with the aid of oriented microtome sections. Because of its strong microlamination and lack of ingrown roots, this peat had a microscopic structure similar to that seen in thin sections...

... by maceration. Layering and ornamentation may be observed in surface views of detached megaspore membranes, but clarity is greater if microtome sections are prepared. Fragments of the nucellus which sometimes remain associated with the megaspore membranes supplement these features and aid in the recognition...