Rate of spread of sheep lice (Damalinia ovis) and their effects on wool quality     

PC CLELAND  KJ DOBSON  RJ MEADE 《Australian veterinary journal》1989,66(9):298-299

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Wastage in the Australian Thoroughbred racing industry: a survey of Sydney trainers     

CJ BAILEY  RJ ROSE  SWJ REID  DR HODGSON 《Australian veterinary journal》1997,75(1):64-66

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Successful treatment of a tarsocrural joint luxation in a pony     

JA LAING  SF CAVES  RJ RAWLINSON 《Australian veterinary journal》1992,69(8):200-201

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Retropharyngeal lymph node infection in horses: 46 cases (1977–1992)     

LC GOLLAND  DR HODGSON  RE DAVIS  RJ RAWLINSON  MB COLLINS  SA McCLINTOCK  DR HUTCHINS 《Australian veterinary journal》1995,72(5):161-164

SUMMARY A retrospective study of 46 horses with retropharyngeal lymph node (RPLN) infection presented to the Rural Veterinary Centre between 1977 and 1992 was undertaken. Horses aged less than one year were most commonly represented (46%). Thirty-nine percent of cases had been exposed to horses with confirmed or suspected strangles (Streptococcus equi subsp equi infection) within the previous 8 weeks. Most frequent signs were unilateral or bilateral swelling of the throat region (65%), respiratory stertor/dyspnoea (35%), purulent nasal discharge (20%), inappetence and signs of depression (15%), and dysphagia (9%). All horses had a soft tissue density in the retropharyngeal region on radiographs. Rhinopharyngoscopy, ultrasonography, haematology as well as cytological and microbial analysis of material aspirated from the soft tissue swelling facilitated diagnosis in some horses. Fifteen horses (33%) were treated with procaine penicillin intramuscularly for 4 to 7 days followed by oral trimethoprim-sulphadimidine for 7 to 14 days. Non-steroidal anti-inflammatory drugs were administered to 6 horses. Four required tracheostomy for severe respiratory distress. The 15 horses treated medically responded to treatment and were discharged from hospital. Three horses (6%) with mild signs received no treatment and recovered uneventfully. Twenty-eight horses (61%) underwent general anaesthesia and surgical drainage of a RPLN abscess. Nineteen received procaine penicillin G for 4 to 7 days. Four of the nine horses that did not receive antibiotic treatment after surgery required further surgical drainage 10 days to 7 weeks after the initial surgery . Limited follow-up information was available for 37 horses. Thirty-two horses were considered to have made complete recovery, 3 horses had died through misadventure and 2 had been euthanased because of chronic ill-thrift .  相似文献   

Reply     

RJ BOOTH 《Australian veterinary journal》1997,75(1):66-66

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Salinomycin poisoning in point-of-lay turkeys   总被引：1，自引：0，他引：1  

GL. GRIFFITHS  P. HILLIER  RJ. SUTHERLAND† 《Australian veterinary journal》1989,66(10):326-329

Salinomycin poisoning occurred in a flock of 700 point-of-lay turkeys; 400 birds died over 7 days as a result of consuming feed contaminated with 50 ppm salinomycin. No gross lesions were detected. Histologic evidence of a myopathy was most readily detected in leg muscles of turkeys 5 to 7 d after ingesting salinomycin. Feeding trials were undertaken and individual susceptibility to the drug was found to vary greatly. In affected birds the plasma concentrations of creatine kinase (CK) and aspartate aminotransferase (AST) were found to be in the range of 500,000 to 2,500,000 IU/l and 9000 to 25,000 IU/l, respectively. The marked increase in the plasma activities of these enzymes preceded histological evidence of segmental muscle necrosis.  相似文献   

The New Illustrated Guide to Fish Diseases in Ornamental and Pond Fish ‐ By Gerald Bassleer     

RJ Whittington 《Australian veterinary journal》2008,86(11):439-439

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Compression of Ice to 210 Gigapascals: Infrared Evidence for a Symmetric Hydrogen-Bonded Phase     

AF Goncharov  VV Struzhkin  MS Somayazulu  RJ Hemley  HK Mao 《Science (New York, N.Y.)》1996,273(5272):218-220

Protonated and deuterated ices (H2O and D2O) compressed to a maximum pressure of 210 gigapascals at 85 to 300 kelvin exhibit a phase transition at 60 gigapascals in H2O ice (70 gigapascals in D2O ice) on the basis of their infrared reflectance spectra determined with synchrotron radiation. The transition is characterized by soft-mode behavior of the nu3 O-H or O-D stretch below the transition, followed by a hardening (positive pressure shift) above it. This behavior is interpreted as the transformation of ice phase VII to a structure with symmetric hydrogen bonds. The spectroscopic features of the phase persisted to the maximum pressures (210 gigapascals) of the measurements, although changes in vibrational mode coupling were observed at 150 to 160 gigapascals.  相似文献   

Smart engineering in the mid-carboniferous: how well could palaeozoic dragonflies Fly?     

RJ Wootton  J Kukalova-Peck  DJS Newman  J Muzon 《Science (New York, N.Y.)》1998,282(5389):749-751

The wings of archaic Odonatoidea from the mid-Carboniferous of Argentina show features analogous to "smart" mechanisms in modern dragonflies that are associated with the agile, versatile flight necessary to catch prey in flight. These mechanisms act automatically in flight to depress the trailing edge and to facilitate wing twisting, in response to aerodynamic loading. The presence of similar features suggests that the earliest known odonatoids were already becoming adapted for high-performance flight in association with a predatory habit.  相似文献   

Scanning Single-Electron Transistor Microscopy: Imaging Individual Charges     

MJ Yoo  TA Fulton  HF Hess  RL Willett  LN Dunkleberger  RJ Chichester  LN Pfeiffer  KW West 《Science (New York, N.Y.)》1997,276(5312):579-582

A single-electron transistor scanning electrometer (SETSE)-a scanned probe microscope capable of mapping static electric fields and charges with 100-nanometer spatial resolution and a charge sensitivity of a small fraction of an electron-has been developed. The active sensing element of the SETSE, a single-electron transistor fabricated at the end of a sharp glass tip, is scanned in close proximity across the sample surface. Images of the surface electric fields of a GaAs/AlxGa1-xAs heterostructure sample show individual photo-ionized charge sites and fluctuations in the dopant and surface-charge distribution on a length scale of 100 nanometers. The SETSE has been used to image and measure depleted regions, local capacitance, band bending, and contact potentials at submicrometer length scales on the surface of this semiconductor sample.  相似文献