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C Marschner C Flanagan DP Higgins MB Krockenberger 《Australian veterinary journal》2014,92(5):177-178
A retrospective review of case records of ultrasonography and necropsy outcomes of 62 koalas was used to investigate the accuracy of ultrasonography in assessing koala urogenital tract structural disease at the Port Macquarie Koala Hospital. The results showed high concordance, supporting ultrasonography as an effective tool for evaluating structural disease of the koala urogenital tract, most commonly seen with chlamydiosis. The study also illustrates the advances benefiting animal welfare that can be made by wildlife carer groups through using a scientific, evidence‐based approach. 相似文献
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Hayes E 《Science (New York, N.Y.)》1919,50(1302):533-536
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A gas chromatographic column has been developed for use in the remote analysis of the martian surface. The column, which utilizes a liquid-modified organic adsorbent (Tenax) as the stationary phase, provides efficient transmission and resolution of nanogram quantities of organic materials in the presence of millionfold excesses of water and carbon dioxide. 相似文献
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Krimigis SM Mitchell DG Hamilton DC Krupp N Livi S Roelof EC Dandouras J Armstrong TP Mauk BH Paranicas C Brandt PC Bolton S Cheng AF Choo T Gloeckler G Hayes J Hsieh KC Ip WH Jaskulek S Keath EP Kirsch E Kusterer M Lagg A Lanzerotti LJ Lavallee D Manweiler J McEntire RW Rasmuss W Saur J Turner FS Williams DJ Woch J 《Science (New York, N.Y.)》2005,307(5713):1270-1273
The Magnetospheric Imaging Instrument (MIMI) onboard the Cassini spacecraft observed the saturnian magnetosphere from January 2004 until Saturn orbit insertion (SOI) on 1 July 2004. The MIMI sensors observed frequent energetic particle activity in interplanetary space for several months before SOI. When the imaging sensor was switched to its energetic neutral atom (ENA) operating mode on 20 February 2004, at approximately 10(3) times Saturn's radius RS (0.43 astronomical units), a weak but persistent signal was observed from the magnetosphere. About 10 days before SOI, the magnetosphere exhibited a day-night asymmetry that varied with an approximately 11-hour periodicity. Once Cassini entered the magnetosphere, in situ measurements showed high concentrations of H+, H2+, O+, OH+, and H2O+ and low concentrations of N+. The radial dependence of ion intensity profiles implies neutral gas densities sufficient to produce high loss rates of trapped ions from the middle and inner magnetosphere. ENA imaging has revealed a radiation belt that resides inward of the D ring and is probably the result of double charge exchange between the main radiation belt and the upper layers of Saturn's exosphere. 相似文献
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Herkenhoff KE Squyres SW Arvidson R Bass DS Bell JF Bertelsen P Ehlmann BL Farrand W Gaddis L Greeley R Grotzinger J Hayes AG Hviid SF Johnson JR Jolliff B Kinch KM Knoll AH Madsen MB Maki JN McLennan SM McSween HY Ming DW Rice JW Richter L Sims M Smith PH Soderblom LA Spanovich N Sullivan R Thompson S Wdowiak T Weitz C Whelley P 《Science (New York, N.Y.)》2004,306(5702):1727-1730
The Microscopic Imager on the Opportunity rover analyzed textures of soils and rocks at Meridiani Planum at a scale of 31 micrometers per pixel. The uppermost millimeter of some soils is weakly cemented, whereas other soils show little evidence of cohesion. Rock outcrops are laminated on a millimeter scale; image mosaics of cross-stratification suggest that some sediments were deposited by flowing water. Vugs in some outcrop faces are probably molds formed by dissolution of relatively soluble minerals during diagenesis. Microscopic images support the hypothesis that hematite-rich spherules observed in outcrops and soils also formed diagenetically as concretions. 相似文献
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