Riverton Hospital

The X-IFU instrument for ESA's upcoming flagship mission Athena will use Mo/Au bilayer transition-edge sensors (TES) with Au/Bi X-ray absorbers to form a kilo-pixel microcalorimeter array. Such detectors require careful calibration to maintain their best possible performance, but such calibrations can change over long periods of time when exposed to certain environmental conditions. We have previously reported the effects of humidity and elevated temperature on prototype array characteristics. In that study, storage of a prototype array at 60 <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$^{\circ }$</tex-math></inline-formula>C for 10 days under vacuum produced an unexpected shift in the TES critical temperature T <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$_{c}$</tex-math></inline-formula> (+13 to +19%) and normal resistance R<inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$_{n}$</tex-math></inline-formula> (+4%). In this work, we continue investigating shifts in array characteristics after long-duration temperature exposures so that safe storage and handling conditions for X-IFU flight arrays can be set. A prototype array exposed to 35 <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$^{\circ }$</tex-math></inline-formula> C under vacuum for 26 days gradually increased in TES normal resistance. The energy scale of a second prototype array was measured before aging and then recovered to within 0.5 eV following a similar aging induced R<inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$_{n}$</tex-math></inline-formula> increase. Aging of the TES was studied directly by applying the same thermal conditions exclusively to Mo/Au bilayers on Si substrate. These measurements allow a better understanding of the cause of the observed shift by decoupling the TES bilayer from the remaining device structures such as the SiNx membrane and the absorber. Four-point resistance measurements were used to readout the bilayer samples at 4.2 K. Bilayers aged in a vacuum generally saw no change or a slight increase in resistance, while bilayers aged in nitrogen gas decreased in resistance. Finally, we conclude with a comparative overview of all test results on prototype arrays and TES bilayers, elaborate on possible mechanisms for the observed shifts in characteristics, and make recommendations for maintaining the long-term stability of our devices.

Aortic dissection is more common than aortic aneurysmal rupture. Affecting a younger age group than atherosclerotic aneurysms, it is closely associated with hypertension and collagen disorders. Ultrasound is not the primary imaging modality; however, clinically silent aortic dissections may first be detected on routine sonography, initiating a further diagnostic evaluation.

Since 1975, the Bureau of Reclamation has installed approximately 25.8 miles (41.5 km) of PVC (polyvinyl‐chloride) lining in the distribution system of the Riverton Irrigation Project. The lining is part of a $40,000,000 rehabilitation program designed to stop waterlogging of adjacent farmland and conserve water. This paper describes the methods used in investigating, designing, and constructing the PVC lining. It also summarizes the construction costs from 1973 to 1982.

Abstract A method is described for the colorimetric determination of ammonia in plasma by a batch ion-exchange procedure. The method combines separation of ammonium ion, using a strongly acidic cation-exchange resin, with a sensitive colorimetric procedure which simultaneously elutes and colorimetrically reacts with the ammonium ion to produce a stable color. Interference by basic amino acids is negligible, and the great sensitivity of the color reaction permits the measurement of ammonia of the order of 0.5 µg./ml. The effects of variations in the experimental conditions are examined, and the results of recovery experiments and other tests of precision and accuracy are reported. In comparison with other methods in current use, this method has distinct advantages in sensitivity, simplicity, and rapidity of determination, provided the conditions and methods of measurement are controlled carefully.

Medical Journal of AustraliaVolume 1, Issue 16 p. 496-496 Reports of Cases CEREBRAL HÆMORRHAGE IN A CHILD L. R. Mallen M.B., B.S. (Adelaide), L. R. Mallen M.B., B.S. (Adelaide) Riverton, South AustraliaSearch for more papers by this author L. R. Mallen M.B., B.S. (Adelaide), L. R. Mallen M.B., B.S. (Adelaide) Riverton, South AustraliaSearch for more papers by this author First published: 01 April 1933 https://doi.org/10.5694/j.1326-5377.1933.tb75519.xAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat No abstract is available for this article. Volume1, Issue16April 1933Pages 496-496 RelatedInformation

The use of arsenate of lead mixed with the soil to a depth of three or four inches before seeding, or used in the top dressing on turf already established is described. The method is proving satisfactory in practice. The large majority of fine turf grasses are stimulated in their growth by the present of the poison on the soil.

Journal Article The Japanese Beetle Quarantine Get access C. W. Stockwell C. W. Stockwell Riverton, N. J. Search for other works by this author on: Oxford Academic PubMed Google Scholar Journal of Economic Entomology, Volume 14, Issue 4, 1 August 1921, Pages 350–352, https://doi.org/10.1093/jee/14.4.350 Published: 01 August 1921