Alien Registration- Hitchcock, Charles M. (Presque Isle, Aroostook County)

https://digitalmaine.com/alien_docs/33446/thumbnail.jp

Abscess of the Spinal Cord: With Report of a Case

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Structure and properties of neodymium chromite

Pure, accepton and Al doped NdCrO3 were prepared by an organo-metallic process. The crystal structure and lattice parameters were determined by x-ray diffraction. All compositions were orthorhombic Pbnm. Pellets were pressed from powders of each composition and sintered to high density in a reducing atmosphere. When a small amount of Fe was substituted for Cr, the powder could be sintered in air. Electrical conductivity for acceptor doped NdCrO3 varied from about 1 (ohm cm)-1 at room temperature to about 10 (ohm cm)-1 at 900°C, about two orders of magnitude higher than the electrical conductivity of the undoped NdCrO3. The activation energy for conduction was lowered by acceptor doping (from 0.18 to 0.08 ev). The thermal expansion coefficient of NdCrO3 was 7.5 x 10-6/°C. Doped and Al substituted material had higher thermal expansion coefficients, with no crystallographic transitions being observed in any composition with thermal expansion measurements to 900°C --Abstract, page ii

The five stripes of China\u27s flag

Article published in the periodical The North American Review, New York, Vol. 211, 1920; pgs. 517-528https://digitalrepository.trincoll.edu/eastbooks/1019/thumbnail.jp

Meta toluene sulphonic acid and related compounds

This item was digitized by the Internet Archive. Thesis (M.A.)--Boston Universityhttps://archive.org/details/metatoluenesulph00all

The geology of New Hampshire : a report comprising the results of explorations ordered by the legislature, Part. I physical geography

https://scholars.unh.edu/geology_books/1002/thumbnail.jp

The geology of New Hampshire : a report comprising the results of explorations ordered by the legislature, part III. Surface geology, part IV. Mineralogy and lithology, part V. economic geology.

https://scholars.unh.edu/geology_books/1003/thumbnail.jp