The paper describes the design, realization and characterization of a set of hybrid medium-power RF power amplifiers, based on a commercial packaged GaN HEMT and developed through a low-cost microstrip process. Two different design solutions suitable for wireless applications are presented: the first, intended for a constant-envelope modulation (with reference to the GSM standard), is a Class F...

Molecular hydrogen (H2) absorption features observed in the line of sight to Q2348−011 at redshift zabs 2.426 are analysed for the purpose of detecting a possible variation of the proton-to-electron mass ratio μ ≡ mp/me. By its structure, Q2348−011 is the most complex analysed H2 absorption system at high redshift so far, featuring at least seven distinctly visible molecular velocity components...

Illustrations, some of them in colours. Publishers: Messrs. W. B. Saunders Co., Philadelphia, London, 1914. This well-known volume on medical diagnosis has been very thoroughly revised : the work of revision extending over a period of two years. The authors have made every effort to bring this edition abreast with our clinical and laboratory methods of diagnosis. To this end several important a...

importers of " Plasmoquine" into India, Burma and Ceylon, I would like, however, 011 behalf of the manufacturers, to make a short remark on the statement of the authors 011 p. 503. " The tablets made as they are at present are unsuitable for use in the damp tropical climate; no sooner is the stopper of the bottle opened than their sugar-coating melts and they run together into a sticky mass." T...

Strained germanium grown on silicon with nonstandard surface orientations like (011) or (111) is a promising material for various semiconductor applications, for example complementary metal-oxide semiconductor transistors. However, because of the large mismatch between the lattice constants of silicon and germanium, the growth of such systems is challenged by nucleation and propagation of threa...

on hygiene. The author must necessarily follow the stereotyped lines of water, air, soil, food, disposal of refuse, personal hygiene, infective diseases, and statistics. In the little work before us, written by Dr. J. P. Modi, of the Agra Medical School, the author follows the usual lines and gives admirable short and accurate accounts of the various subjects. As Lieutenant-Colonel E. J. O'Mear...

Sik.?I have received the enclosed letter from Mr. Hutchinson of Pusa in regard to the remarks on Electrolytic Chlorogen contained in the report of my paper on "The Selection of a Disinfectant" in the May issue of the Gazette. Whilst I am not entirely in agreement with Mr. Hutchinson in his estimation of costs based only 011 a phenol coefficient,? (Lysol, for instance, is extensively used by gyn...

Strained germanium grown on silicon with nonstandard surface orientations like (011) or (111) is a promising material for various semiconductor applications, for example complementary metal-oxide semiconductor transistors. However, because of the large mismatch between the lattice constants of silicon and germanium, the growth of such systems is challenged by nucleation and propagation of threa...