History of Frederick the Second, emperor of the Romans. From chronicles and documents published within the last ten years.

Mode of access: Internet.

The thoughts of the Emperor M. Aurelius Antoninus, Tr. by George Long ... with an essay by Matthew Arnold.

Mode of access: Internet.

The thoughts of the Emperor Marcus Aurelius Antoninus.

Mode of access: Internet.

A selection from the Meditations of the Emperor Marcus Aurelius Antoninus,

"This selection ... has been made ... to set forth ... the social side of the stoicism of [Marcus Aurelius] ... About half of the original book has been left aside".--Introd.

The thoughts of the Emperor Marcus Aurelius Antoninus /

Bibliographic footnotes.

The romance of the Emperor Octavian; now first published from MSS. at Lincoln and Cambridge.

Mode of access: Internet.

The meditations of the Emperor Marcus Aurelius Antoninus.

Mode of access: Internet.

Posthumous works of Frederic II, King of Prussia.

"Translated from the French by Thomas Holcroft."

Recollections of a Russian diplomat; the suicide of monarchies (William II and Nicholas II)

Preface signed: L. W. Makovski.

The Emperor Nicholas II as I knew him /

Mode of access: Internet.

The thoughts of the Emperor M. Aurelius Antoninus.

Mode of access: Internet.

The thoughts of the Emperor Marcus Aurelius Antoninus.

Tr. of: De rebus suis

The meditations of the Emperor Marcus Aurelius Antoninus, /

Includes index.

Evaluation of piezoelectric PVDF polymers for use in space environments. II. Effects of atomic oxygen and vacuum UV exposure

The effects of atomic oxygen (AO) and vacuum UV radiation simulating low Earth orbit conditions on two commercially available piezoelectric polymer films, poly(vinylidene fluoride) (PVDF) and poly(vinylidene fluoride-trifluoroethylene) P(VDF-TrFE), have been studied. Surface erosion and pattern development are significant for both polymers. Erosion yields were determined as 2.8 � 10�24 cm3/atom for PVDF and 2.5 � 10�24 cm3/atom for P(VDF-TrFE). The piezoelectric properties of the residual material of both polymers were largely unchanged after exposure, although a slight shift in the Curie transition of the P(VDF-TrFE) was observed. A lightly cross-linked network was formed in the copolymer presumably because of penetrating vacuum ultraviolet (VUV) radiation, while the homopolymer remained uncross-linked. These differences were attributed to varying degrees of crystallinity and potentially greater absorption, and hence damage, of VUV radiation in P(VDFTrFE) compared with PVDF.