Secret proceedings and debates of the convention assembled at Philadelphia : in the year 1787, for the purpose of forming the Constitution of the United States of America. From the notes taken by the late Robert Yates ... and copied by John Lansing, jun. ... Including "The genuine information," laid before the legislature of Maryland, by Luther Martin ... Also, other historical documents relative to the federal compact of the North American union.

"Biographical sketch" [of Robert Yates]: p. [306]-308.

Proceedings of the state rights celebration, at Charleston, S.C., July 1st, 1830. Containing the speeches of the Hon. Wm. Drayton & Hon. R.Y. Hayne, who were the invited guests; also of Langdon Cheves, James Hamilton, Jr., and Robert J. Turnbull, Esqrs., and the remarks of His Honor the intendant, H.L. Pinckney, to which is added the volunteer toasts given on the occasion.

Mode of access: Internet.

Martin Schongauer, 1445-1491 : an exhibition of engravings by the master to be held at the adjoining galleries of Mr. R. Ederheimer and Mr. George S. Bellman.

Cover title.

The life of Robert Stephenson, F.R.S. etc. etc., late president of the Institution of Civil Engineers.

Mode of access: Internet.

A foure-fould meditation, of the foure last things : viz. ... 1. Houre of death. 2. Day of iudgement. 3. Paines of hell. 4. Ioyes of heauen. Shewing the estate of the elect and reprobate : composed in a divine poeme by R. S. The author of S. Peters complaint. Robert Southwell, S. J. Imprinted at London by G. Eld: for Francis Burton. 1606. With a bibliographical preface by Charles Edmonds ... .

Mode of access: Internet.

The complete poetical and prose works of Robert Burns : with life, notes, correspondence and glossary /

Mode of access: Internet.

Early recollections of Robert Hallowell Gardiner, 1782-1864.

Contains brief notices of the Hallowell, Gardiner, Vaughan, Dumaresq and Tudor families.

Robert Brownings Verhaltnis zu Frankreich : I. Teil R. Brownings Beziehungen zur franzosischen Literatur und Geschichte.

Thesis (doctoral)--Albrecht-Ludwigs-Universitat, Freiburg im Breisgau.

A study of the formation of amorphous calcium phosphate and hydroxyapatite on melt quenched Bioglass(A (R)) using surface sensitive shallow angle X-ray diffraction

Melt quenched silicate glasses containing calcium, phosphorous and alkali metals have the ability to promote bone regeneration and to fuse to living bone. These glasses, including 45S5 Bioglass(A (R)) [(CaO)(26.9)(Na2O)(24.4)(SiO2)(46.1)(P2O5)(2.6)], are routinely used as clinical implants. Consequently there have been numerous studies on the structure of these glasses using conventional diffraction techniques. These studies have provided important information on the atomic structure of Bioglass(A (R)) but are of course intrinsically limited in the sense that they probe the bulk material and cannot be as sensitive to thin layers of near-surface dissolution/growth. The present study therefore uses surface sensitive shallow angle X-ray diffraction to study the formation of amorphous calcium phosphate and hydroxyapatite on Bioglass(A (R)) samples, pre-reacted in simulated body fluid (SBF). Unreacted Bioglass(A (R)) is dominated by a broad amorphous feature around 2.2 A...(-1) which is characteristic of sodium calcium silicate glass. After reacting Bioglass(A (R)) in SBF a second broad amorphous feature evolves similar to 1.6 A...(-1) which is attributed to amorphous calcium phosphate. This feature is evident for samples after only 4 h reacting in SBF and by 8 h the amorphous feature becomes comparable in magnitude to the background signal of the bulk Bioglass(A (R)). Bragg peaks characteristic of hydroxyapatite form after 1-3 days of reacting in SBF.

Direct observation of R...R distances in rare-earth (R) phosphate glasses by magnetic difference neutron diffraction

A magnetic difference neutron diffraction study of a rare-earth (Tb) phosphate glass has revealed exclusively the Tb...Tb distances. The difference between data taken with and without an applied magnetic field of 4 T shows Tb...Tb pairwise atomic correlations at 3.9 and 6.4 A, respectively, with relative coordination numbers of 1:14. The first distance arises when two Tb3+ ions share a common oxygen neighbor, and indicates a clustering of rare-earth ions. The second distance arises when two Tb3+ ions are coordinated to different oxygens in the same PO4 group, in a near-linear arrangement.