First detection of bovine noroviruses and detection of bovine coronavirus in Australian dairy cattle          下载免费PDF全文

SJ Symes  JL Allen  PD Mansell  KL Woodward  KE Bailey  JR Gilkerson  GF Browning 《Australian veterinary journal》2018,96(6):203-208

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REPLY     

JC McNAE  SJ LEWIS 《Australian veterinary journal》2004,82(8):478-478

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Incidence of autumn frost damage and lammas growth in a 4-year-old clonal trial of Sitka spruce (Picea sitchensis) in Britain     

Mboyi  WM; Lee  SJ 《Forestry》1999,72(2):135-146

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Large-scale molecular dynamics simulations of dislocation intersection in copper     

SJ Zhou  DL Preston  PS Lomdahl  DM Beazley 《Science (New York, N.Y.)》1998,279(5356):1525-1527

The results of massively parallel three-dimensional molecular dynamics simulations of the perpendicular intersection of extended dislocations in copper are reported. The intersection process, which involves three of the four possible 111 glide planes in the face-centered cubic lattice, begins with junction formation, followed by unzipping, partial dislocation bowing, cutting, and, finally, unit jog formation. The investigation provides insights into this complex atomistic process, which is currently not accessible to experimental investigation.  相似文献   

Past temperatures directly from the greenland ice sheet   总被引：3，自引：0，他引：3  

D Dahl-Jensen  K Mosegaard  N Gundestrup  GD Clow  SJ Johnsen  AW Hansen  N Balling 《Science (New York, N.Y.)》1998,282(5387):268-271

A Monte Carlo inverse method has been used on the temperature profiles measured down through the Greenland Ice Core Project (GRIP) borehole, at the summit of the Greenland Ice Sheet, and the Dye 3 borehole 865 kilometers farther south. The result is a 50, 000-year-long temperature history at GRIP and a 7000-year history at Dye 3. The Last Glacial Maximum, the Climatic Optimum, the Medieval Warmth, the Little Ice Age, and a warm period at 1930 A.D. are resolved from the GRIP reconstruction with the amplitudes -23 kelvin, +2.5 kelvin, +1 kelvin, -1 kelvin, and +0.5 kelvin, respectively. The Dye 3 temperature is similar to the GRIP history but has an amplitude 1.5 times larger, indicating higher climatic variability there. The calculated terrestrial heat flow density from the GRIP inversion is 51.3 milliwatts per square meter.  相似文献   

Alteration of oceanic volcanic glass: textural evidence of microbial activity     

MR Fisk  SJ Giovannoni  IH Thorseth 《Science (New York, N.Y.)》1998,281(5379):978-980

The subsurface biosphere may constitute as much as 50 percent of Earth's biomass. Direct and indirect evidence suggests that an extensive biosphere exists in the rocks below the sea floor. This survey of basalts of the Atlantic, Pacific, and Indian Oceans supports the hypothesis that bacteria have colonized much of the upper oceanic crust, which has a volume estimated at 10(18) cubic meters. Although this is the largest habitat on Earth, its low abundance of bacteria constitutes much less than 1 percent of Earth's biomass.  相似文献   

Incidence of ryegrass staggers in white rhinoceros (Ceratotherium simum) at Auckland Zoo     

SJ Bluett  DE Hume  BA Tapper  SL Stephens 《New Zealand veterinary journal》2013,61(1)

Abstract

Extract

Most perennial ryegrass (Lolium perenne) plants in pastures in New Zealand contain a naturally occurring fungal endophyte, Neotyphodium lolii. Endophyte-infected perennial ryegrass produces alkaloids that vary in concentration during the year. Some alkaloids enhance the persistence and productivity of ryegrass pastures by protecting them against insect attack. However, when other alkaloids are consumed they can reduce animal performance and lead to health problems. The alkaloid lolitrem B, for example, causes the neuromuscular disorder ryegrass staggers (Fletcher et al 1999 Fletcher, LR, Sutherland, BL and Fletcher, CG. 1999. “The impact of endophyte on the health and productivity of sheep grazing ryegrass-based pastures”. In Ryegrass endophyte: an essential New Zealand symbiosis Grassland Research and Practice Series Edited by: Woodfield, DR and Matthew, C. Vol. 7, 11–17.  [Google Scholar]). Clinical symptoms of ryegrass staggers in animals range from slight muscular tremors through to staggering and complete collapse. Severely affected animals create management problems and are prone to accidental death. Outbreaks occur sporadically, particularly in summer and autumn and affect sheep, cattle, deer, horses, llamas (Lama glama) and alpaca (Lama pacos). Lolitrem B appears to be a stable compound, which tends to be concentrated in the leaf sheath at the base of the ryegrass plant and in the seed-heads (di Menna et al 1992 di Menna, ME, Mortimer, PH, Prestidge, RA, Hawkes, AD and Sprosen, JM. 1992. Lolitrem B concentrations, counts of Acremo ni um lolii hyphae, and the incidence of ryegrass staggers in lambs on plots of A. lolii-infected perennial ryegrass. New Zealand Journal of Agricultural Research, 35: 211–217. [Taylor &; Francis Online], [Web of Science ®] , [Google Scholar]; Keogh et al 1996 Keogh, RG, Tapper, BA and Fletcher, RH. 1996. Distributions of the fungal endophyte Acremonium lolii, and of the alkaloids lolitrem B and peramine, within perennial ryegrass. New Zealand Journal of Agricultural Research, 39: 121–127. [Taylor &; Francis Online], [Web of Science ®] , [Google Scholar]). Hay made from endophyte-infected perennial ryegrass contains large numbers of seed-heads and lolitrem B concentrations can be high, especially if it is made in late summer or autumn and, consequently, animals fed such hay are at risk of developing ryegrass staggers.  相似文献   

The Effect of Epidural and General Anesthesia on the Healing of Colonic Anastomoses   总被引：1，自引：0，他引：1  

CHARLES E. BLASS DVM  MS    BARBARA M. KIRBY DVM    DON R. WALDRON DVM    MARGARET A. TURK DVM  PhD  M. PAT CRAWFORD PhD  DVM 《Veterinary surgery : VS》1987,16(1):75-79

Colonic anastomoses were performed on two groups of 13 dogs each. Epidural anesthesia and general anesthesia were performed in one group and general anesthesia only in the other. Intraoperatively, the epidural-general anesthesia dogs tended to bleed less, making the anastomosis less difficult. Histologic comparisons showed healing to be more advanced in the epidural-general anesthesia dogs compared to the general anesthesia dogs 24 hours and 7 days postoperatively. Differences were not noticed 14 and 28 days postoperatively. Bursting pressures were determined 24 hours after surgery. Differences between the groups were not noticed. Leakage occurred at 72% of the pressure determined to cause leakage in normal colons.  相似文献   

Factors on farms in eastern Australia associated with the development of tibiotarsal rotation in ostrich chicks     

BT SQUIRE  SJ MORE 《Australian veterinary journal》1998,76(2):110-117

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Solarization for the control of Pueraria montana (kudzu)     

CH NEWTON  LR NELSON  SJ DEWALT  EA MIKHAILOVA  CJ POST  MA SCHLAUTMAN  SK COX  WC BRIDGES  KC HALL 《Weed Research》2008,48(5):394-397

The effects of translucent polyethylene sheeting as a thermal covering to eradicate Pueraria montana (kudzu) were investigated at Clemson, South Carolina on a clay loam. In 2005, the highest reduction of live root crowns was observed where P. montana was covered for the entire growing season (May–October) with a reduction of 42% of live root crowns compared with the control plots. Where P. montana was covered for alternate weeks throughout the growing season live root crowns were reduced by 35%. Covering P. montana for one week and then uncovering for four weeks repeatedly through the season killed 24% of root crowns. In 2006, the second year of treatment to the same plots, the three solarization treatments had similar efficacy of about 97%. The use of polyethylene sheeting appears not to be cost‐effective for general control of large P. montana infestations, but may be useful for small patches.  相似文献